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UTILITY PATENT APPLICATION
TRANSMITTAL (Only for new nonprovisional applications under 37 CFR 1.53(b))
Attorney Docket No. HW708564 Client Reference No. 81356140US16
First Inventor WU, Wenfu
Title
METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
APPLICATION ELEMENTS ADDRESS Commissioner for Patents P.O. Box 1450
TO: Alexandria, VA 22313-1450
1.
2.
3.
4. 5.
a ❑
a
El a a. b.
Utility
1.27.
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I.
Applicant
Specification
Drawings Declaration
Patent Application Transmittal Form claims small entity status. See 37 CFR
(including claims and abstract) [Total Pages 48]
[Total Sheets 12] [Total Pages 4]
Newly executed Copy from prior application
[Note Box 6 below] ❑ Deletion of Inventor(s) Signed statement attached
ACCOMPANYING APPLICATION PARTS 10. ❑
11. ❑
12.
13. ❑ 14. ❑
15. rj
16. ❑❑
18.
19. ❑
20. a 21. a 22. a 23. a
24. a
37
a
be
Pre
Applicant publication Assignment (cover
Assignee) Power English Information
applications) Preliminary Return (Should Claim Document(s) Request 122(b)(2)(B)(i)
months) Petition Accelerated
Translation Verification Translation Verification
requests early publication. (include fee under 37 CFR 1.18(d))
Papers sheet and document(s))
CFR 3.73(b) Statement (when there is an
of Attorney Translation Document (if applicable)
Disclosure Statement (IDS) Form PTO-1449 Copies of References (except for U.S. patents and
Amendment17. Receipt Postcard
be specifically itemized) of Priority & Certified Copy of Priority
& Certification Under 35 USC (Form PTO/SB/35 or its equivalent must
submitted with this application to prevent publication at 18
for Special Status Examination Support Document
-Examination Search Document of CN Priority Document w/
of PCT Priority Document w/
6.
7. 8.
9.
a
' ❑
a. b.
c.
Nucleotide
deleting inventor(s) named in the prior application Incorporation by Reference: The entire disclosure of the prior application, from which an oath or declaration is supplied under Box 5b is considered as part of the disclosure of the accompanying application and is hereby incorporated by reference. Application Data Sheet. See 37 CFR 1.76 Large Table or Computer Program (Appendix) in Computer Readable Form (CRF), or on CD-ROM or CD-R in duplicate.
and/or Amino Acid Sequence Submission ❑ Computer Readable Form (CRF) Specification Sequence Listing on: i. ❑ CD-ROM or CD-R (2 copies); or ii. ❑ Paper Copy ❑ Statement verifying identity of above copies
21. If gi
a CONTINUING APPLICATION, check appropriate box and supply the requisite information below: Continuation ❑ Divisional PI Continuation-in-part of prior application no. 12/479,216. Prior application information: Examiner: MATHARU, Manpreet S.; Group Art Unit: 2617
APPLICATION FEES
SMALL ENTITY OTHER THAN A
SMALL ENTITY FILING FEE $82 (EFS) $330
SEARCH FEE $270 $540 EXAM FEE $110 $220
CLAIMS NUMBER FILED NUMBER EXTRA RATE
ADD'L CLAIM FEE RATE
ADD'L CLAIM FEE
Total Claims 14 - 20 = 0 x 26 = x 52 = $0 Independent Claims 2 - 3 = 0 x 110 = x 220 = $0 ❑ First Presentation of Multiple Dependent Claim + 195 = + 390 =
U Application Size Fee - If the application transmittals, data sheet, specification, claims, abstract, drawings, and preliminary amendment exceed 100 sheets of paper, enter number of sheets here: - If application is filed in paper form, enter this number in Total Sheets, below. - If application is filed via EFS-Web, multiply this number by 0.75 and enter result in Total Sheets, below. Total Sheets = - 100 = + 50 =
(round itp to a whole number) x 135 = x 270 =
❑ Assignment Fee + 40 = + 40 = ❑ Early Publication Fee + 300 = + 300 = a Petition for Special Status 37 CFR 1.17(h) $130
[Page 1 of 2]
NSN677-1002, Page 1
(TOTAL AMOUNT TO BE CHARGED TOTAL TOTAL $1220
UTILITY PATENT APPLICATION TRANSMITTAL Attorney Docket No. HW708564 Client Reference No. 81356140US16
22. CII Please charge my Deposit Account No. 12-1216 in the amount of $1220.
in the amount of $ is enclosed.
is hereby authorized to credit overpayments or charge any additional fees of the following types No. 12-1216:
required under 37 CFR 1.16. required under 37 CFR 1.17.
is hereby generally authorized under 37 CFR 1.136(a)(3) to treat any future reply in this or application filed pursuant to 37 CFR 1.53 requiring an extension of time as incorporating a request
and the Commissioner is hereby specifically authorized to charge Deposit Account No. 12-1216 for that may be due in connection with such a request for an extension of time.
23. ❑ A check
24. The Commissioner to Deposit Account a. .E4 Fees b. ►l. Fees
25. The Commissioner any related therefor, any fee
26. CORRESPONDENCE ADDRESS IM Customer No.:
77399
❑ , Reg. No. Leydig, Voit & Mayer, Ltd. Two Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
Name John K. Winn, Reg. No. 58,579
Signature P--- (P. -
Date June 27, 2011
Utility Transmittal (Revised 10/1/2008)
[Page 2 of 2]
NSN677-1002, Page 2
Attorney Docket Number
Application Number
HW708564 Application Data Sheet 37 CFR 1.76
METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK Title of Invention
The application data sheet is part of the provisional or nonprovisional application for which it is being submitted. The following form contains the bibliographic data arranged in a format specified by the United States Patent and Trademark Office as outlined in 37 CFR 1.76. This document may be completed electronically and submitted to the Office in electronic format using the Electronic Filing System (EFS) or the document may be printed and included in a paper filed application.
PTO/SB/14 (11-08) Approved for use through 09/30/2010. OMB 0651-0032
U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
Secrecy Order 37 CFR 5.2 Portions or all of the application associated with this Application Data Sheet may fall under a Secrecy Order pursuant to 37 CFR 5.2 (Paper filers only. Applications that fall under Secrecy Order may not be filed electronically.)
Applicant Information: Applicant 1
Remove
Applicant Authority ®Inventor °Legal Representative under 35 U.S.C. 117 0Party of Interest under 35 U.S.C. 118
Prefix Given Name Middle Name Family Name Suffix
Wenfu WU
Residence Information (Select One) 0 US Residency 0 Non US Residency 0 Active US Military Service
City Shanghai Country Of Residencei CN
Citizenship under 37 CFR 1.41(b) i CN
Mailing Address of Applicant:
Address 1 Huawei Administration Building
Address 2 Bantian, Longgang District
City Shenzhen, Guangdong State/Province
Postal Code 518129 Countryi CN
Applicant 2 Remove
Applicant Authority ®Inventor °Legal Representative under 35 U.S.C. 117 °Party of Interest under 35 U.S.C. 118
Prefix Given Name Middle Name Family Name Suffix
Weihua HU
Residence Information (Select One) 0 US Residency C) Non US Residency 0 Active US Military Service
City Shanghai Country Of Residencei CN
Citizenship under 37 CFR 1.41(b) i CN
Mailing Address of Applicant:
Address 1 Huawei Administration Building
Address 2 Bantian, Longgang District
City Shenzhen, Guangdong State/Province
Postal Code 518129 Countryi CN
Applicant 3 Remove
Applicant Authority ®Inventor °Legal Representative under 35 U.S.C. 117 °Party of Interest under 35 U.S.C. 118
Prefix Given Name Middle Name Family Name Suffix
Shanhan WANG
Residence Information (Select One) 0 US Residency ® Non US Residency 0 Active US Military Service
City Shanghai Country Of Residencei CN
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PTO/SB/14 (11-08) Approved for use through 09/30/2010. OMB 0651-0032
U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
Application Data Sheet 37 CFR 1.76 Attorney Docket Number HW708564
Application Number
Title of Invention METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
Citizenship under 37 CFR 1.41(b) i
Mailing Address of Applicant:
Address 1 Huawei Administration Building
Address 2 Bantian, Longgang District
City Shenzhen, Guangdong State/Province
Postal Code 518129 Countryi CN
All Inventors Must Be Listed - Additional Inventor Information blocks may be generated within this form by selecting the Add button.
Add
Correspondence Information: Enter either Customer Number or complete the Correspondence Information section below. For further information see 37 CFR 1.33(a).
❑ An Address is being provided for the correspondence Information of this application.
Customer Number 77399
Email Address [email protected] Add Email Remove Email
Application Information:
Title of the Invention METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
Attorney Docket Number HW708564 Small Entity Status Claimed ❑
Application Type Nonprovisional
Subject Matter Utility
Suggested Class (if any) Sub Class (if any)
Suggested Technology Center (if any)
Total Number of Drawing Sheets (if any) 12 Suggested Figure for Publication (if any)
Publication Information: ❑ Request Early Publication (Fee required at time of Request 37 CFR 1.219)
Request Not to Publish. I hereby request that the attached application not be published under 35 U.S.
C. 122(b) and certify that the invention disclosed in the attached application has not and will not be the subject of an application filed in another country, or under a multilateral international agreement, that requires publication at eighteen months after filing.
Representative Information:
Representative information should be provided for all practitioners having a power of attorney in the application. Providing this information in the Application Data Sheet does not constitute a power of attorney in the application (see 37 CFR 1.32). Enter either Customer Number or complete the Representative Name section below. If both sections are completed the Customer Number will be used for the Representative Information during processing.
Please Select One: 0 Customer Number 0 US Patent Practitioner 0 Limited Recognition (37 CFR 11.9)
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U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
Application Data Sheet 37 CFR 1.76 Attorney Docket Number HW708564
Application Number
Title of Invention METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
Customer Number 77399
Domestic Benefit/National Stage Information: This section allows for the applicant to either claim benefit under 35 U.S.C. 119(e), 120, 121, or 365(c) or indicate National Stage entry from a PCT application. Providing this information in the application data sheet constitutes the specific reference required by 35 U.S.C. 119(e) or 120, and 37 CFR 1.78(a)(2) or CFR 1.78(a)(4), and need not otherwise be made part of the specification.
Prior Application Status Pending Remove
Application Number Continuity Type Prior Application Number Filing Date (YYYY-MM-DD)
Continuation of 12479216 2009-06-05
Prior Application Status Expired Remove
Application Number Continuity Type Prior Application Number Filing Date (YYYY-MM-DD)
12479216 Continuation of PCTCN2008071842 2008-07-31
Additional Domestic BenefitJNational Stage Data may be generated within this form by selecting the Add button.
Add
Foreign Priority Information: This section allows for the applicant to claim benefit of foreign priority and to identify any prior foreign application for which priority is not claimed. Providing this information in the application data sheet constitutes the claim for priority as required by 35 U.S.C. 119(b) and 37 CFR 1.55(a).
Remove
Application Number Country i Parent Filing Date (YYYY-MM-DD) Priority Claimed
200710137568.8 CN 2007-08-07 0 Yes 0 No
Additional Foreign Priority Data may be generated within this Add button.
form by the selecting Add
Assignee Information: Providing this information in the application data sheet does not substitute for compliance with any requirement of part 3 of Title 37 of the CFR to have an assignment recorded in the Office.
Assignee 1 Remove
If the Assignee is an Organization check here. X
Organization Name Huawei Technologies Co., Ltd.
Mailing Address Information:
Address 1 Huawei Administration Building
Address 2 Bantian, Longgang District
City Shenzhen, Guangdong State/Province
Country i CN Postal Code 518129
Phone Number Fax Number
Email Address
Additional Assignee Data may be generated within this form by selecting the Add button.
Add
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PTO/SB/14 (11-08) Approved for use through 09/30/2010. OMB 0651-0032
U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
Application Data Sheet 37 CFR 1.76 Attorney Docket Number HW708564
Application Number
Title of Invention METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
Signature: A signature of the applicant or representative is required in accordance with 37 CFR 1.33 and 10.18. Please see 37 CFR 1.4(d) for the form of the signature.
Signature /John K. Winn/ Date (YYYY-MM-DD) 2011-06-27
First Name John K. Last Name Winn Registration Number 58579
This collection of information is required by 37 CFR 1.76. The information is required to obtain or retain a benefit by the public which is to file (and by the USPTO to process) an application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.14. This collection is estimated to take 23 minutes to complete, including gathering, preparing, and submitting the completed application data sheet form to the USPTO. Time will vary depending upon the individual case. Any comments on the amount of time you require to complete this form and/or suggestions for reducing this burden, should be sent to the Chief Information Officer, U.S. Patent and Trademark Office, U.S. Department of Commerce, P.O. Box 1450, Alexandria, VA 22313-1450. DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS. SEND TO: Commissioner for Patents, P.O. Box 1450, Alexandria, VA 22313-1450.
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Privacy Act Statement
The Privacy Act of 1974 (P.L. 93-579) requires that you be given certain information in connection with your submission of the attached form related to a patent application or patent Accordingly, pursuant to the requirements of the Act, please be advised that: (1) the general authority for the collection of this information is 35 U.S.C. 2(b)(2); (2) furnishing of the information solicited is voluntary; and (3) the principal purpose for which the information is used by the U.S. Patent and Trademark Office is to process and/or examine your submission related to a patent application or patent. If you do not furnish the requested information, the U.S. Patent and Trademark Office may not be able to process and/or examine your submission, which may result in termination of proceedings or abandonment of the application or expiration of the patent.
The information provided by you in this form will be subject to the following routine uses:
1. The information on this form will be treated confidentially to the extent allowed under the Freedom of Information Act (5 U.S.C. 552) and the Privacy Act (5 U.S.C. 552a). Records from this system of records may be disclosed to the Department of Justice to determine whether the Freedom of Information Act requires disclosure of these records.
2. A record from this system of records may be disclosed, as a routine use, in the course of presenting evidence to a court, magistrate, or administrative tribunal, including disclosures to opposing counsel in the course of settlement negotiations.
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4. A record in this system of records may be disclosed, as a routine use, to a contractor of the Agency having need for the information in order to perform a contract Recipients of information shall be required to comply with the requirements of the Privacy Act of 1974, as amended, pursuant to 5 U.S.C. 552a(m).
5. A record related to an International Application filed under the Patent Cooperation Treaty in this system of records may be disclosed, as a routine use, to the International Bureau of the World Intellectual Property Organization, pursuant to the Patent Cooperation Treaty.
6. A record in this system of records may be disclosed, as a routine use, to another federal agency for purposes of National Security review (35 U.S.C. 181) and for review pursuant to the Atomic Energy Act (42 U.S.C. 218(c)).
7. A record from this system of records may be disclosed, as a routine use, to the Administrator, General Services, or his/her designee, during an inspection of records conducted by GSA as part of that agency's responsibility to recommend improvements in records management practices and programs, under authority of 44 U.S.C. 2904 and 2906. Such disclosure shall be made in accordance with the GSA regulations governing inspection of records for this purpose, and any other relevant (i.e., GSA or Commerce) directive. Such disclosure shall not be used to make determinations about individuals.
8. A record from this system of records may be disclosed, as a routine use, to the public after either publication of the application pursuant to 35 U.S.C. 122(b) or issuance of a patent pursuant to 35 U.S.C. 151. Further, a record may be disclosed, subject to the limitations of 37 CFR 1.14, as a routine use, to the public if the record was filed in an application which became abandoned or in which the proceedings were terminated and which application is referenced by either a published application, an application open to public inspections or an issued patent.
9. A record from this system of records may be disclosed, as a routine use, to a Federal, State, or local law enforcement agency, if the USPTO becomes aware of a violation or potential violation of law or regulation.
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Doc Code: PET.SPRE.ACX PTOISB/28 (07-09)
Doc Description: Petition for 12-month Accelerated Exam Approved for use through 07/31/2012. OMB 0651-0031 U.S. Patent and Trademark Office; U. S. DEPARTMENT OF COMMERCE
Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it displays a valid OMB control number.
PETITION TO MAKE SPECIAL UNDER ACCELERATED EXAMINATION PROGRAM
Attorney Docket Number
HW708564 First Named Inventor
WU, Wenfu
Application Number (if Known)
Title of Invention
METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
APPLICANT HEREBY PETITIONS TO MAKE THE ABOVE-IDENTIFIED APPLICATION SPECIAL UNDER THE REVISED ACCELERATED EXAMINATION PROGRAM. See Instruction sheet on page 3. 1. Claims of the application:
a. The application must contain three (3) or fewer independent claims and twenty (20) or fewer total claims. The application may not contain any multiple dependent claims.
b. Applicant hereby agrees not to separately argue the patentability of any dependent claim during any appeal in the application. Specifically, the applicant agrees that the dependent claims will be grouped together with and not argued separately from the independent claim from which they depend in any appeal brief filed in the application (37 CFR 41.37(c)(1)(vii)).
c. The claims must be directed to a single invention.
2. Interviews: Applicant hereby agrees to have (if requested by examiner): a. An interview (including an interview before a first Office action) to discuss the prior art and any potential
rejections or objections with the intention of clarifying and possibly resolving all issues with respect to patentability at that time, and
b. A telephonic interview to make an election without traverse if the Office determines that the claims are not obviously directed to a single invention.
3. Preexamination Search Statement and Accelerated Examination Support Document: With this petition, applicant is providing: a preexamination search statement, in compliance with the requirements set forth in item 8 of the instruction sheet, and an "accelerated examination support document" that includes: a. An information disclosure statement in compliance with 37 CFR 1.98 citing each reference deemed most
closely related to the subject matter of each of the claims;
b. For each reference cited, an identification of all the limitations of the claims that are disclosed by the reference specifying where the limitation is disclosed in the cited reference;
c. A detailed explanation of how each of the claims are patentable over the references cited with the particularity required by 37 CFR 1.111(b) and (c);
d. A concise statement of the utility of the invention as defined in each of the independent claims (unless the application is a design application);
e. An identification of any cited references that may be disqualified as prior art under 35 U.S.C. 103(c) as amended by the CREATE act; and
f. A showing of where each limitation of the claims finds support under the first paragraph of 35 U.S.C. 112 in the written description of the specification. If applicable, the showing must also identify: (1) each means-(or step-) plus-function claim element that invokes consideration under 35 U.S.C. 112, ¶6; and (2) the structure, material, or acts that correspond to any means- (or step-) plus-function claim element that invokes consideration under 35 U.S.C. 112, ¶6. If the application claims the benefit of one or more applications under title 35, United St ates Code, the showing must also include where each limitation of the claims finds support under the first paragraph of 35 U.S.C. 112 in each such application in which such support exists.
The information is required to obtain or retain a benefit by the public which is to file (and by the USPTO to process) an application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.11 and 1.14. This form is estimated to take 12 hours to complete, including gathering, preparing, and submitting the completed application form to the USPTO. Time will vary depending upon the individual case. Any comments on the amount of time you require to complete this form and/or suggestions for reducing this burden, should be sent to the Chief Information Officer, U.S. Patent and Trademark Office, U.S. Department of Commerce, P.O. Box 1450, Alexandria, VA 22313-1450. DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS. If you need assistance in completing the form, call 1-800-PTO-9199 and select option 2. EFS Web 2.2.20
NSN677-1002, Page 8
Doc Code: PET.SPRE.ACX PTO/SB/28 (07-09)
Doc Description: Petition for 12-month Accelerated Exam Approved for use through 07/31/2012. OMB 0651-0031 U.S. Patent and Trademark Office; U. S. DEPARTMENT OF COMMERCE
Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it displays a valid OMB control number.
PETITION TO MAKE SPECIAL UNDER ACCELERATED EXAMINATION PROGRAM (Continued)
Attorney Docket Number
HW708564 First Named Inventor
WU, Wenfu
Attachments:
a. Accelerated Examination Support Document (see item 3 above).
b A statement, in compliance with the requirements set forth in item 8 of the instruction sheet, detailing the preexamination search which was conducted.
c. Information Disclosure Statement.
d.
Other (e.g., a statement that the claimed subject matter is directed to environmental quality, energy, or countering terrorism (37 CFR 1.102(c)(2)).
Fees: The following fees must be filed electronically via EFS or EFS-Web:
a. The basic filing fee, search fee, examination fee, and application size fee (if required) under 37 CFR 1.16.
b. Petition fee under 37 CFR 1.17(h) - unless the petition is filed with a showing under 37 CFR 1.102(c)(2).
Signature:
Click Remove if you wish to remove this signatory Remove
Signature /John K. Winn/ Date 2011-06-27
Name (Print/Typed)
John K. Winn Registration Number
58579
Click Add if you wish to add additional signatory Add
Note: Signatures of ail the inventors or assignees of record of the entire interest or their representative(s) are required in accordance with 37 CFR 1.33 and 10.18. Please CFR 1.4(d) for the form of the signature. see 37
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Doc Code: PET.SPRE.ACX PTO/SB/28 (07-09)
Doc Description: Petition for 12-month Accelerated Exam Approved for use through 07/31/2012. OMB 0651-0031 U.S. Patent and Trademark Office; U. S. DEPARTMENT OF COMMERCE
Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it displays a valid OMB control number.
Instruction Sheet Petition to Make Special Under the Accelerated Examination
A grantable petition must meet the following conditions: 1. The petition to make special under the accelerated examination program must be filed with the application and accompanied by the
fee set forth in 37 CFR 1.17(h) or a statement that the claimed subject matter is directed to environmental quality, energy, or countering terrorism.
2. The application must be a non-reissue utility or design application filed under 35 U.S.C. 111(a).
3. The application must be filed electronically using the Office electronic filing system (EFS) or EFS-Web.
4. The application must be complete under 37 CFR 1.51 and in condition for examination on tiling. For example, the application must be filed together with the basic filing fee, search fee, examination fee, and application size fee (if applicable), and an oath or declaration under 37 CFR 1.63.
5. The application must contain three (3) or fewer independent claims and twenty (20) or fewer total claims. The application may not contain any multiple dependent claims. The petition must include a statement that applicant will agree not to separately argue the patentability of any dependent claim during any appeal in the application. Specifically, the applicant is agreeing that the dependent claims will be grouped together with and not argued separately from the independent claim from which they depend in any appeal brief tiled in the application (37 CFR 41.37(c)(1)(vii)).
6. The claims must be directed to a single invention. The petition must include a statement that applicant will agree to have a telephonic interview to make an election without traverse in a telephonic interview if the Office determines that all the claims are not directed to a single invention.
7. The petition must include a statement that applicant will agree to have an interview (including an interview before a first Office action) to discuss the prior art and any potential rejections or objections with the intention of clarifying and possibly resolving all issues with respect to patentability at that time.
8. At the time of filing, applicant must provide a statement that a preexamination search was conducted, including an identification of the field of search by United States class and subclass and the date of the search, where applicable, and, for database searches, the search logic or chemical structure or sequence used as a query, the name of the file or files searched and the database service, and the date of the search. a. This preexamination search must involve U.S. patents and patent application publications, foreign patent documents, and nonpatent
literature, unless the applicant can justify with reasonable certainty that no references more pertinent than those already identified are likely to be found in the eliminated source and includes such a justification with this statement.
b. This preexamination search must be directed to the claimed invention and encompass all of the features of the independent claims, giving the claims the broadest reasonable interpretation.
c. The preexamination search must also encompass the disclosed features that may be claimed, in that an amendment to the claims (including any new claim) that is not encompassed by the preexamination search will be treated as non-responsive and will not be entered.
d. A search report from a foreign patent office will not be accepted unless the search report satisfies the requirements set forth above. e. Any statement in support of a petition to make special must be based on a good faith belief that the preexamination search was
conducted in compliance with these requirement. See 37 CFR 1.56 and 10.18.
9. At the time of filing, applicant must provide in support of the petition an accelerated examination support document that includes: a. An information disclosure statement in compliance with 37 CFR 1.98 citing each reference deemed most closely
related to the subject matter of each of the claims;
b. For each reference cited, an identification of all the limitations of the claims that are disclosed by the reference specifying where the limitation is disclosed in the cited reference;
c. A detailed explanation of how each of the claims are patentable over the references cited with the particularity required by 37 CFR 1.111(b) and (c);
d. A concise statement of the utility of the invention as defined in each of the independent claims (unless the application is a design application);
e. An identification of any cited references that may be disqualified as prior art under 35 U.S.C. 103(c) as am ende d by the CREATE act; and
f. A showing of where each limitation of the claims finds support under the first paragraph of 35 U.S.C. 112 in the written description of the specification. If applicable, the showing must also identify: (1) each means- (or step-) plus-function claim element that invokes consideration under 35 U.S.C. 112, If6; and (2) the structure, material, or acts that correspond to any means- (or step-) plus-function claim element that invokes consideration under 35 U.S.C. 112,16. If the application claims the benefit of one or more applications under title 35, United States Code, the showing must also include where each limitation of the claims finds support under the first paragraph of 35 U.S.C. 112 in each such application in which such support exists. For more information, see notice "Changes to Practice for Petitions in Patent Applications to Make Special and for Accelerated Examination" available on the USPTO web site at http://www.uspto.goviweb/office stpacIdapplogsheethtml
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NSN677-1002, Page 10
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NSN677-1002, Page 11
Declaration and Power of Attorney for Patent Application
VI,IrporTans
Chinese Language Declaration
r1=15f*FA f#14T;StlifIgit TUElltit*: As a below named inventor, I hereby declare that:
itiltAllE • enitHaMiiiii*AgEtt167 My residence, post office address and citizenship are as stated next to my name.
IME-PM • 111-0401i-4341914 (0154M-A fICAMIUM-VIA#NDOt(ORINRARC. tift±611PAPPNWOMOMT
OFIETO.M-444PAMMTRIlliSMft:
gmoptgoveesa PCT 110114303Ili6
I believe I am the original, first and sole inventor (if only one name is listed below) or an original, first and joint inventor (if plural names are listed below) of the subject matter which is claimed and for which a patent is sought on the invention entitled
METHOD, SYSTEM, AND DEVICE FOR USER
DETACHMENT WHEN A HANDOVER OR CHANGE
• OCCURS IN HETEROGENEOUS NETWORK
the specification of which is attached hereto unless the following box is checked:
El was filed on 31 July2008
as United States Application Number or 13C1'
International Application Number
AXT PCT/CN2008/071842 and was amended on
OE+ (414fil) (if applicable).
110010111UMWEN±MINIMMO•tICUle 010ZAWOMOICCIV*.
I hereby state that I have reviewed and understand the contents of the above identified specification, including the claims, as amended by any amendment referred to above.
101110#8/Mrla.---F-Linfl- • HAIM X*11filehlettitrdel •
I acknowledge the duty to disclose information which is material to patentability as defined in Title 37, Code of Federal Regulations, § 1.56. •
PTO/SB/101 (5-95) Approved for use through 9(30/98. OMB 0651-0032
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NSN677-1002, Page 12
Chinese Language Peclaration
41141$tItAX10111116k.OLMH-FEMS-7-1/"-FilAta )-(b)Xngi 365 05(b)IIIMATTI-Mill4f140111*2 rinlittegilgl 365 tiVagliAlffiflial PCT1491141ittiitg!) V-4,010.3WEPI-Eiff=041-Eillfrat • AVIEVIDIVI lltAXSZIgh • flial41•114444111111IM1►1 1111ratii PCT
1041411** •
Prior Foreign Applications) 014if5t:41 111PN
200710137568.8 China
1 hereby claim foreign priority under.Title 35, United States Cede, 119(a)0) or § 365(b) of any lbreigit apPlierdien(s) ftir patent or
inventor's certificate, or § 365 (a) of any PCT International application, uhith designated at !cast one country other than the United. Sttes, listed below and have alio identified below, by Checking the box, arty foreign application for patent or inventor's certificate. or PCT International application having a filing dun before (hat of the application on which priority is claimed.
Priority Not Claimed *301Zekitll
7 August 2007 (Number) (MN)
(timnbcr) Otis)
(Country) ((E S)
(Country) (N)
(DaylMotutgYear Filed) MIMS /14/if )
(Day/MonthrYeer Filed) ('r18 /)
(Numbe) (Country) ( O) (11%)
Ritilillittigniiitin 35 VI 119(e)3' WA1;CFEC-(61Viii WWI 011411615THI
(OnyakenthtYear Filed) ( ritt#fl f A t sr)
I hereby claim the benefit under Title 35, United States Code. a 119(e) of any United States provisional application(s) listed below.
(Application Nn.) (Filing Date)
(*S*Elltl)
(Application No)
(14441/%10)
(Finns Dare)
(ti Mil )
1243104MISHM it6305:-.±.10841---m-hiaDn1 365 11§(C)/Mf3 i7 KT litifillriffritiatAllfilttritAME FilMilitiffierOJA • tigitithvfMlitiVia.M4110-1112*
RIV9110Mat per 1041 1111114E-FE1101—W::-F4 M—Kftti 4z4VAIIMMirdEPIIIVILUI motorail SIOIMIRM -a`±E.111141— • Mt (13 ) 4131PM411411 ItilltiVO4 • Zt-iMitiM .5ft•T-1A4fIrlitdinAlc eight
• ffitE5i is t PCT 13 •
I hereby claim the benefit under Title 35, United States Code. 120 of any United States application(s), or § 365(c) of any PCT
International application designating the United States, listed below arid, insofar as, the subject Mallet of each or the claims of this appIhMtiOnts not disclosed in the prior United States or PCT InternatiOnal: *illation in the manner provided by the first Paragraph of Tide 35, United States Code, § 112, 1 acknowledge the duty to disclose inforMation which is material to patentability as defined in 1111e 37, Code or Federal Reguiationsi § 1,56 which became available between the filing date Of the prior application and the national or PCT International filing date of this application.
PCT/CN2008/071842 31 July 2008
Pending
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(Slates) (patented, podia& abandoned) (ffta)(Elliaffle • • WV)
(Application No) . Mina Dace)
(t1MMROU mum) aeftwimumwecnrimwmatutom.mgo riORMMITONTIMICOMM:UMWE,VMMIEMW litAMM-9"-*-41 , SNWSOMOVVION1MMA OVM0•4141**0 MME.MONXIMMtV014t& llt4INIVA4MEINO1 ed].
(Status) (patented, pending, abandoned) (M)(2,1(14#1ii • 41110irll • Triilb
I hereby declare that ali statements made herein of my own knowledge arc true and that all statements made on information and belief are believed to be true; and further that these statements were made with the knowledge that wilifill false statements and the like so made arc punishable by fine or imprisonment, or both, under Section loot of Title 18 of the United States Code and that such willful false statements may jeopardize the validity of the application riflery patent issued thereon.
. rrom rsoi (5-95) . • Apixovid ferric Math 91.10.198. • OM13 06514132
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NSN677-1002, Page 13
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Chinese Language Declaration
J.* vanitirrAL 1-• v dzitEml.
r rli;i111114krit*IS!.14 fthfitiaWW14M111'1111i itr4011111,ftlfi :flig1,.11114VMW
Pt)WFilt OE ATTORNEY: As a named inventor, t hereby appoint the following tatorncy(s) and/or agent(s) to pmsecolc this application and transact :111 hosinems in 11w Patent and Trademark Office connected therewith: (list name and registration number)
171'0 Customer Number 85854
Darby & Darby P.C.
Sold Correspoodeneo to:
Address associated with Customer Number 85854
Direct Telephone Calls tin (now and Orphan', minihri)
Pierre rt. Yanney, 2 I 2-527-7700
ZIA '51140 .11'.1.091'sn it 4'1 Pull name L.11.NIIIC ilt first inventor
Wean WU
e 111 441414 1.1101 inventors signature Date
i)ePt r Oil k_____,TV.v4:Lg., . fillip Reside et
Shenzl)en, China
NU Citizenship China
11i.liniltatl: Post Orrice Address
thntwei AdMinistratiOn Building Bastliatt, Longgung District Shenzhen 518129, Ouungdolw P.R.. China
;IS IN Ali'il01411V.17'r.i(Alifi) -,
iltia mune of second jiii»I inventor. Wilily Weihtut UU
tg *". fligl. IN X Nil'• 11181 Smoint inventor's signature Quito
06114,kis BR_ June ?v _____k4 .1.101: Realtlenee
Shenzben, China KINI Citizenship
China ftliKiitlittl: • Post °Moo Address
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(Supply similar informatinn and signature tar third and subsequent ZIS '''.(1/44111:filt
joint inventors.)
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SUPPLEMENTAL INVENTOR sHeET (PTO/Se/101)
Chinese Language Declaration
014?.1111.91 lilt./ .4 • Aer.ot 03: 'Z. 1-N4 Safi Fl Vi: -I:RU.)14k t.ellt./1101,1P.ffil-W (rim' ti ;el t 9111 01; 4(1 ,P1ii:t.1111DX6/14/
POWER OF ATTORNEY: Ash immix' inventor. I hereby appoint Ihr Iidluwing aitorney(s) anti/or agent(s) to prosecute this application and !outset:I all busines.-1 in the Patent and Trademark I Mice connected therewith: (list name and registration nuns her)
110 Cummins. Number 85854
Darby & Durhy P.C'.
.'40.11i10//11: Send Correspondence its:
Address associated with Customer Number 85854
l'Et/itItZ) f.)ireet Telephone Culls to: (tome and telepluirie windier)
Pierre It. Yanncy, 212-527-770U •-•-•-•-
7:4.- 41 JkliO3:14)11r; 1"rl'itt1111'i1 ran name of third joint inventor. irony
Shasishan WANG . _______. .......
3)4 5l la, S:11:•.:ft(1019•1•M`i: n (DI 'third inventor
. s signature Date
aisk , 194t lithi/l/k liltlik
.
Ikesidenee
Shenzhen, China isztl7i Citizen4sip
China !irsks)/IMI:
.
Post Office Address
Hun wei Administration Building Bastian, Lunggang District Shenziten 518129, Guangdong P.R. Chinn
111'11111:#4141•Rlo I lit- ti Mit() Nil intiOr IN r limo!' joint inventor. if:my
iilla111/1fRigi'N'A'r • t 1 JO fourth iiwkaiiiir'N signature Dale
Illthl• Residence
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griiIkhl: Posi Office Address
(LI 71: fIlt:11;1..!Itti/191.isigti!IRtslaiNtl•fitt4-t: (Supply similar information and signature for fiilh anti subsequent joint inventors.)
NSN677-1002, Page 15
VERIFICATION OF TRANSLATION
I, Zhouping hereby solemnly affirm that I have a fluent knowledge of English and
Chinese languages and that the attached document is the true and accurate translation of
the CN application number 200710137568.8
Dated this 17 day of June,2011
Signature of Translate lila pill
NSN677-1002, Page 16
DF078307331
Abstract
A method for user detachment when a handover/change occurs in a heterogeneous network is
provided. The method includes: handing over or switching a user equipment (UE) from a source
network to a target network; and determining, by the source network, whether to detach the UE
5 from the source network, and if yes, detaching the UE from the source network; otherwise, not
detaching the UE from the source network. A system and a device for user detachment when a
handover/change occurs in a heterogeneous network, and another method for user detachment when
a handover/change occurs in a heterogeneous network are also provided. The detachment solutions
achieve the detachment of the UE from the source network by a network side and the detachment of
10 the UE from the source network when the UE is handed over or switched from the source network
to the target network.
1
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DF078307331
Representative Drawing
UE MME Non-3 GPP GW
Serving GW
PDN GW
HSS/AAA Server
602
601. Access a 3GPP network
The UE triggers handover or switching.
603. Access request
604. Access authentication process
605a. Proxy binding update
605b. Binding update
606a. Proxy binding Ack
606b. Binding Ack
607. Access accept
608a. Delete bearer request
608b. Delete bearer request
608b. Binding revocation
Ind
609a. Delete bearer response
509b. Delete bearer response
609b. Binding revocation
Ack
610. Detach request
610. Detach accept 611. Purge UE
611. Purge UE Ack if
2
NSN677-1002, Page 18
DF078307331
Claims 1. A method for user detachment when a handover/change occurs in a heterogeneous network,
comprising:
handing over or switching a user equipment (UE) from a source network to a target network;
5 and
determining, by the source network, whether to detach the UE from the source network, and if
yes, detaching the UE from the source network; otherwise, not detaching the UE from the source
network.
2. The method according to claim 1, wherein the source network is a 3rd-generation partnership
10 project (3GPP) network and the target network is a non-3GPP network; or the source network is a
non-3GPP network and the target network is a 3GPP network.
3. The method according to claim 1, wherein the determining step comprises:
if it is known that the UE is handed over or switched from the source network to the target
network, determining, by the source network, to detach the UE from the source network; or
15 if it is known that the UE is handed over or switched from the source network to the target
network, determining according to terminal capability of the UE: if the terminal capability of the
UE is single radio capability, determining, by the source network, to detach the UE from the source
network; or
if it is known that the UE is handed over or switched from the source network to the target
20 network, determining according to access policy information of an operator: if the access policy
information of the operator is single radio access, determining, by the source network, to detach the
UE from the source network; or
if it is known that the UE is handed over or switched from the source network to the target
network, determining according to the terminal capability of the UE and the access policy
25 information of the operator: if the terminal capability of the UE is dual radio capability and the
access policy information of the operator is the single radio access; or if the terminal capability of
the UE is the single radio capability and the access policy information of the operator is dual radio
access; or if the terminal capability of the UE is the single radio capability and the access policy
information of the operator is the dual radio access, determining, by the source network, to detach
30 the UE from the source network.
4. The method according to claim 1, wherein the determining to detach the UE from the source
network comprises:
determining, by a packet data network gateway (PDN GW) of the source network, whether to
delete a default bearer, and if yes, sending a delete bearer request message of the default bearer to a
3
NSN677-1002, Page 19
DF078307331
serving gateway (serving GW) of the source network, sending, by the serving GW of the source
network, the received delete bearer request message to a mobility management network element
(MME), and deleting, by the MME, a mobility management context (MM context) and bearer
resources; or
5 sending, by the PDN GW of the source network, a binding revocation indication (Ind) message
to the serving GW of the source network; and determining, by the serving GW of the source
network, whether to delete a default bearer of the UE, and if yes, sending a delete bearer request
message of the default bearer to the MME, and deleting, by the MME, the MM context and the
bearer resources.
10 5. The method according to claim 3, wherein before the determining step, the method
comprises:
sending, by a PDN GW of the source network, a delete bearer request message to an MME
through a serving GW of the source network, wherein the delete bearer request message comprises
a cause value indicating a reason for the UE to be handed over or switched from the source network
15 to the target network; or sending, by the PDN GW of the source network, a release bearer request
message to the MME, wherein the release bearer request message indicates that the UE is handed
over or switched from the source network to the target network; or when the UE is handed over or
switched from the source network to the target network, sending, by a PDN GW of the source
network, a normal delete bearer request message to the MME.
20 6. The method according to claim 3, wherein after the determining step, the method comprises:
sending, by a PDN GW of the source network, a detach request message to an MME through a
serving GW of the source network; or sending, by the PDN GW of the source network, the detach
request message to the MME; or sending, by the PDN GW of the source network, a binding
revocation Ind message to the serving GW of the source network, and sending, by the serving GW
25 of the source network, the detach request message to the MME; and
receiving, by the MME of the source network, the detach request message and deleting an MM
context related to the UE; and initiating, by the MME of the source network, a delete bearer process
and deleting bearer resources of the UE in the source network.
7. The method according to claim 3, wherein after the determining step, the method comprises:
30 sending, by a PDN GW of the source network, a detach request message to a GW of the source
network; and
receiving, by the GW of the source network, the detach request message and deleting an MM
context related to the UE.
8. The method according to claim 3, wherein after the determining step, the method comprises:
4
NSN677-1002, Page 20
DF078307331
sending, by a network element on the target network, a register request message carrying a
current access network type of the UE to a home subscriber server (HSS); and sending, by the HSS,
a cancel location message to an MME when the HSS determines that an access network type that
the UE registers last time is inconsistent with an access network type that the UE registers this time;
5 and
deleting, by the MME, an MM context related to the UE.
9. The method according to claim 3, wherein after the determining step, the method comprises:
sending, by a network element on the target network, a register request message carrying a
current access network type of the UE to an HSS; and sending, by the HSS, a cancel location
10
message to a non-3GPP GW when the HSS determines that an access network type that the UE
registers last time is inconsistent with an access network type that the UE registers this time; and
deleting, by the non-3GPP GW, an MM context related to the UE.
10. The method according to claim 3, wherein after the determining step, the method
comprises:
15
sending, by the target network, a handover/change complete (HO complete) message to an
MME of the source network; and deleting, by the MME of the source network, an MM context
related to the UE, initiating a delete bearer process, and deleting bearer resources of the UE in the
source network.
11. The method according to claim 3, wherein after the determining step, the method
20 comprises:
sending, by the target network, an HO complete message to a non-3GPP GW of the source
network; and deleting, by the non-3GPP GW of the source network, an MM context related to the
UE.
12. The method according to claim 4, wherein the determining to delete the default bearer
25 comprises:
determining to delete the default bearer of the UE according to a handover/change of the UE in
an access network: determining whether the UE is handed over or switched from the source
network to the target network, and if yes, deleting the default bearer of the UE; or
determining to delete the default bearer of the UE according to the handover/change of the UE
30 in the access network and the terminal capability of the UE: determining whether the UE is handed
over or switched from the source network to the target network and whether the terminal capability
of the UE is the single radio capability, and if yes, deleting the default bearer of the UE; or
determining to delete the default bearer of the UE according to the handover or switching of the
UE in the access network and the access policy infoltnation of the operator: determining whether
5
NSN677-1002, Page 21
DF078307331
the UE is handed over or switched from the source network to the target network and whether the
access policy information of the operator is the single radio access, and if yes, deleting the default
bearer of the UE; or
determining to delete the default bearer of the UE according to the handover or switching of the
5 UE in the access network, the terminal capability of the UE, and the access policy information of
the operator: if the UE is handed over or switched from the source network to the target network,
the terminal capability of the UE is the dual radio capability, and the access policy information of
the operator is the single radio access; or if the UE is handed over or switched from the source
network to the target network, the access policy information of the operator is the dual radio access,
10 and the terminal capability of the UE is the single radio capability; or if the UE is handed over or
switched from the source network to the target network, the terminal capability of the UE is the
single radio capability, and the access policy information of the operator is the single radio access,
deleting the default bearer of the UE.
13. The method according to claim 3 or 12, wherein the obtaining the terminal capability of the
15 UE comprises:
carrying the terminal capability of the UE in an attach request message, a tracking area update
(TAU) request message, a routing area update (RAU) request message, or an access request
message when the UE sends the attach request message, the TAU request message, the RAU request
message, or the access request message to the network element of the source network, wherein the
20 network element of the source network is the MME or the non-3GPP GW.
14. The method according to claim 3 or 12, wherein the obtaining the terminal capability of the
UE further comprises:
sending, by the MME of the source network, a create bearer request message carrying the
terminal capability of the UE to the serving GW of the source network; and sending, by the serving
25 GW of the source network, the create bearer request message the PDN GW of the source network;
or
sending, by the MME of the source network, an update location request message carrying the
terminal capability of the UE to the HSS of the source network.
15. The method according to claim 3 or 12, wherein the obtaining the access policy information
30 of the operator comprises:
notifying, by the MME of the source network, the configured access policy information of the
operator to the source network; or
notifying, by the non-3GPP GW of the source network, the configured access policy
information of the operator to the source network.
6
NSN677-1002, Page 22
DF078307331
16. The method according to claim 3 or 12, wherein the obtaining the access policy information
of the operator comprises:
notifying, by the HSS, the configured access policy information of the operator to the MME of
the source network and notifying, by the MME of the source network, the configured access policy
5 information of the operator to the source network; or
notifying, by the HSS, the configured access policy information of the operator to the
non-3GPP GW of the source network and notifying, by the non-3GPP GW of the source network,
the configured access policy information of the operator to the source network; or
notifying, by a policy and charging rule function (PCRF) entity, the configured access policy
10 information of the operator to the source network.
17. The method according to claim 3 or 12, wherein the UE notifies the terminal capability of
the UE or the access policy information of the operator to the source network when a location area
of the UE changes and the terminal capability of the UE changes.
18. The method according to claim 7, wherein the detach request message carries a cause value
15 indicating that the detach request is caused by the handover or switching of the UE from the source
network to the target network.
19. A method for user detachment when a handover/change occurs in a heterogeneous network,
comprising:
triggering, by a user equipment (UE), handover or switching from a source network to a target
20 network; and
determining, by the UE, whether to detach the UE from the source network, and if yes,
detaching the UE from the source network; otherwise, not detaching the UE from the source
network.
20. The method according to claim 19, wherein after the triggering, by the UE, handover or
25 switching from the source network to the target network, the method comprises:
handing over or switching the UE from the source network to the target network.
21. The method according to claim 19, wherein after the UE is detached from the source
network, the method comprises:
sending, by the UE, a detach request message to a mobility management network element
30 (MME); and
receiving, by the MME, the detach request message, deleting a mobility management context
(MM context) of the UE in the MME, initiating a delete bearer process, and deleting bearer
resources of the UE related to a 3rd-generation partnership project (3GPP) network.
22. The method according to claim 19, wherein after the UE is detached from the source
7
NSN677-1002, Page 23
DF078307331
network, the method comprises:
sending, by the UE, a detach request message to a non-3GPP GW; and
receiving, by the non-3GPP GW, the detach request message and deleting an MM context of
the UE related to the non-3GPP GW.
5 23. The method according to claim 19, wherein after the UE is detached from the source
network, the method comprises:
setting, by the MME of the source network, a state of the UE to an invalid state.
24. The method according to claim 19 or 20, wherein the determining, by the UE, whether to
detach the UE from the source network comprises:
10 deleting bearer resources and an MM context related to the source network when the UE knows
that the UE is handed over or switched from the source network to the target network; or
determining whether to detach the UE from the source network according to terminal capability
of the UE when the UE knows that the UE is handed over or switched from the source network to
the target network: if the terminal capability of the UE is single radio capability, deleting bearer
15 resources and an MM context related to the source network; or
determining whether to detach the UE from the source network according to access policy
information of an operator when the UE knows that the UE is handed over or switched from the
source network to the target network: if the access policy information of the operator is single radio
access, deleting the bearer resources and the MM context related to the source network; or
20 determining whether to detach the UE from the source network according to the terminal
capability of the UE and the access policy information of the operator when the UE knows that the
UE is handed over or switched from the source network to the target network: if the terminal
capability of the UE is dual radio capability and the access policy information of the operator is the
single radio access; or if the terminal capability of the UE is the single radio capability and the
25 access policy information of the operator is dual radio access; or if the terminal capability of the UE
is the single radio capability and the access policy information of the operator is the dual radio
access, deleting, by the UE, the bearer resources and the MM context related to the source network.
25. The method according to claim 21, wherein before the UE sends the detach request message,
the method comprises: determining to send the detach request message,
30 the determining to send the detach request message comprises:
detemaining to send the detach request message according to a handover or switching of the UE
in an access network: determining whether the UE is handed over or switched from the source
network to the target network, and if yes, determining to send the detach request message to the
MME; or
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determining to send the detach request message according to the handover or switching of the
UE in an access network and terminal capability of the UE: if the UE is handed over or switched
from the source network to the target network and the telminal capability of the UE is single radio
capability, sending the detach request message to the MME; or
5 determining according to the handover or switching of the UE in the access network and access
policy information of the operator: if the UE is handed over or switched from the source network to
the target network and the access policy information of the operator is single radio access, sending
the detach request message to the MME; or
determining to delete the MM context of the UE according to the handover or switching of the
10 UE in the access network, the terminal capability of the UE, and the access policy information of
the operator: if the UE is handed over or switched from the source network to the target network,
the terminal capability of the UE is dual radio capability, and the access policy information of the
operator is the single radio access; or if the UE is handed over or switched from the source network
to the target network, the access policy information of the operator is dual radio access, and the
15 terminal capability of the UE is the single radio capability; or if the UE is handed over or switched
from the source network to the target network, the terminal capability of the UE is the single radio
capability, and the access policy information of the operator is the single radio access, sending the
detach request message to the MME.
26. The method according to claim 21 or 22, wherein the detach request message carries a
20 cause value indicating that the detach request is caused by the handover or switching of the UE
from the source network to the target network.
27. The method according to claim 23, wherein the setting the state of the UE to the invalid
state comprises:
deleting, by the MME of the source network, subscription data information of the UE and an
25 MM context of the UE; or
setting, by the MME of the source network, a state of the MME used by the UE to the invalid
state; or
setting, by the MME of the source network, an address of the MME used by the UE to an
invalid value; or
30 setting, by the MME of the source network, a change flag location of the MME used by the UE
to a changed state.
28. A system for user detachment when a handover/change occurs in a heterogeneous network,
comprising a user equipment (UE) and a network side, wherein
the UE is configured to be handed over or switched from a source network on the network side
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to a target network on the network side; and
the network side is configured to handover or switch the UE from the source network to the
target network and to detach the UE from the source network.
29. The system according to claim 28, wherein the UE comprises a first handover/change
5 module and a first detachment module, and the network side comprises a second handover/change
module and a second detachment module;
the first handover/change module is configured to enable the UE to be handed over or switched
from the source network to the target network;
the first detachment module is configured to detach the UE from the source network;
10 the second handover/change module is configured to enable the network side to hand over or
switch the UE from the source network to the target network; and
the second detachment module is configured to enable the network side to detach the UE from
the source network.
30. A device for user detachment when a handover/change occurs in a heterogeneous network,
15 comprising a second handover/change module and a second detachment module disposed on a
network side, wherein
the second handover/change module is configured to hand over or switch a user equipment (UE)
from a source network on the network side to a target network on the network side; and
the second detachment module is configured to detach the UE from the source network.
20 31. The device according to claim 30, comprising a second detachment determination module
configured to determine whether to detach the UE from the source network, wherein if yes, an
initiating instruction is sent to the second detachment module to initiate the second detachment
module.
32. The device according to claim 30, comprising a module for receiving terminal capability of
25 the UE configured to receive the terminal capability of the UE sent by the UE.
33. The device according to claim 31, wherein the second detachment determination module is
disposed in a mobility management network element (MME), a packet data network gateway (PDN
GW), a serving Gateway (serving GW), a non-3rd-generation partnership project gateway
(non-3GPP GW), or a home subscriber server/authentication, authorization, and accounting server
30 (HSS/A A A server).
34. The device according to claim 30, comprising a module for sending access policy
information of an operator configured to send the access policy information of the operator to the
UE.
35. A device for user detachment when a handover/change occurs in a heterogeneous network,
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comprising a first handover/change module and a first detachment module disposed in a user
equipment (UE), wherein
the first handover/change module is configured to hand over or switch the UE from a source
network to a target network; and
5 the first detachment module is configured to detach the UE from the source network.
36. The device according to claim 35, comprising a first detachment determination module
configured to determine whether to detach the UE from the source network, wherein if yes, an
initiating instruction is sent to the first detachment module to initiate the first detachment module.
37. The device according to claim 35, comprising a module for sending terminal capability of
10 the UE configured to send the terminal capability of the UE to a network side.
38. The device according to claim 35, comprising a module for receiving access policy
information of an operator configured to receive the access policy information of the operator sent
by the network side.
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Specification
METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
HANDOVER/CHANGE OCCURS IN HETEROGENEOUS NETWORK
FIELD OF THE TECHNOLOGY
5 [0001] The present invention relates to the network communication technology and more
particularly to a method, system, and device for user detachment when a handover/change occurs in
a heterogeneous network.
BACKGROUND
[0002] To improve the competitiveness of networks in the future, a new evolution network is
10 now researched for a 3rd-generation partnership project (3GPP) network. FIG. 1 is a schematic
structural view of an evolution network system for a 3GPP network. The system includes: an
evolved UMTS terrestrial radio access network (E-UTRAN), for implementing all functions related
to the wireless feature of the evolution network; a mobility management entity (MME), for mobility
management of a control plane, including management of a user context and a mobility state and
15 allocation of temporary user identities; a serving gateway (serving GW) entity, for acting as a user
plane anchor point between access networks of the 3GPP network for terminating the E-UTRAN; a
packet data network gateway (PDN GW) entity, for acting as a user anchor point between an access
network of the 3GPP network and an access network of a non-3GPP network, and an interface for
terminating the external PDN; a policy and charging rule function (PCRF) entity, for implementing
20 functions of policy control decision and flow-based charging control; and a home subscriber server
(HSS), for storing subscription information of users.
[0003] The UMTS terrestrial radio access network (UTRAN) or GSM/EDGE radio access
network (GERAN) implements all functions relevant to the wireless feature of the existing
UMTS/GPRS network; a serving GPRS supporting node (SGSN) implements functions of route
25 forwarding, mobility management, session management, and user information storage in the
GPRS/UMTS network.
[0004] IP access networks of the non-3GPP network mainly include access networks defined by
non-3GPP network organizations, for example, wireless local area network (WLAN), worldwide
interoperability for microwave access (Wimax), and code division multiple access (CDMA)
30 network.
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[0005] An authentication, authorization, and accounting server (AAA server) mainly
implements access authentication, authorization, and accounting for user equipment (UE).
[0006] It should be noted that, the schematic structural view of FIG. 1 is not the only schematic
structural view of the evolution network system for a 3GPP network. The evolution network of a
5 3GPP network may have various structures.
[0007] One requirement on the evolution network of a 3GPP network is to realize the handover
or switching of the UE between a 3GPP network and a non-3GPP network. FIG. 2 is a flow chart of
a process that the UE is handed over or switched from a 3GPP network to a non-3GPP network in
the prior art. The process includes the following steps.
10 [0008] In Step 201, the UE accesses the 3GPP network through a serving GW and a PDN GW.
[0009] In FIG. 2, the mobility management network element (MME) and the serving GW
belong to the 3GPP network, a non-3GPP GW belongs to the non-3GPP network, and the PDN GW
and HSS/AAA server are common network elements shared by the 3GPP network and the
non-3GPP network.
15 [0010] In Step 202, the UE triggers the handover or switching from the 3GPP network to the
non-3GPP network.
[0011] In Step 203, the UE sends an Access Request message to the non-3GPP GW, and
requests to access the non-3GPP GW.
[0012] As for a WLAN system, the non-3GPP GW in this step is an evolved packet data
20 gateway (EPDG); as for a Wimax system, the non-3GPP GW in this step is an access service
network gateway (ASN GW); and as for a CDMA system, the non-3GPP GW is an access gateway
(AGW).
[0013] In Step 204, an access authentication process is performed between the UE, the
non-3GPP GW, and the HSS/AAA server, and the non-3GPP GW obtains the PDN GW address
25 information used by the UE.
[0014] In Step 205a, the non-3GPP GW sends a proxy binding update message to the PDN GW.
[0015] In this step, it is assumed that an interface protocol between the non-3GPP GW and the
PDN GW is the proxy mobile internet protocol (PMIP). If an interface protocol between the UE and
the PDN GW is the client mobile internet protocol (CMIP), Step 205a is replaced by Step 205b, in
30 which the UE sends a binding update message to the PDN GW.
[0016] In Step 206a, the PDN GW sends a proxy binding acknowledgement message to the
non-3GPP GW.
[0017] In this step, it is assumed that the interface protocol between the non-3GPP GW and the
PDN GW is the PMIP. If the interface protocol between the UE and the PDN GW is the CMIP, Step
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206a is replaced by Step 206b, in which the PDN GW sends a binding Ack message to the UE.
[0018] In Step 207, the non-3GPP GW returns an access accept message to the UE.
[0019] In Step 208, the PDN GW sends a delete bearer request message to the serving GW, and
the serving GW sends the delete bearer request message to the MME.
5 [0020] In Step 209, the MME deletes bearer resources related to the UE, returns a delete bearer
response message to the serving GW, and the serving GW returns the delete bearer response
message to the PDN GW.
[0021] The above flow is a specific example of the process that the UE is handed over or
switched from a 3GPP network to a non-3GPP network. Certainly, the handover/change process is
10 not limited to the above descriptions. A 3GPP network involved in the handover/change may be
GERAN, UTRAN, or EUTRAN. A non-3GPP network involved in the handover/change may be
WLAN, Wimax, or CDMA system.
[0022] Once the UE accesses a 3GPP network, the 3GPP network creates bearer resources of
the UE and a mobility management context of the UE. The mobility management context of the UE
15 exists in the MME. Furthermore, bearer resources of a 3GPP network and a mobility management
context of a 3GPP network are also created in the UE. Therefore, when the UE is handed over or
switched from a 3GPP network to a non-3GPP network, user detachment needs to be performed to
save network resources. The user detachment includes detachment of the 3GPP network and
detachment of the UE. The detachment of the 3GPP network indicates that the 3GPP network
20 deletes the bearer resources of the UE and the mobility management context of the UE, and the
detachment of the UE indicates that the UE deletes the bearer resources of the 3GPP network and
the mobility management context of the 3GPP network. Here, the mobility management context of
the UE exists in the MME.
[0023] However, in the process shown in FIG. 2, when the UE is handed over or switched from
25 a 3GPP network to a non-3GPP network, the 3GPP network merely deletes the bearer resources of
the UE, but does not delete the mobility management context of the UE, and meanwhile, the UE
does not delete the bearer resources and mobility management context of the 3GPP network as well.
[0024] As known from the above that, the prior art neither provides a method for 3GPP network
detachment when the UE is handed over or switched from a 3GPP network to a non-3GPP network,
30 nor provides a specific method for user detachment of the UE when the UE is handed over or
switched from a 3GPP network to a non-3GPP network. That is to say, no specific solution for user
detachment when handover/change occurs in a heterogeneous network is provided in the prior art.
[0025] In addition, if the UE has a single radio capability, that is, the UE can access only one
network, after the UE is handed over or switched from a 3GPP network to a non-3GPP network,
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user detachment needs to be performed, that is, the 3GPP network needs to detach the UE, and the
UE needs to be detached from the 3GPP network. The detaching, by the 3GPP network, the UE
includes that the 3GPP network deletes the bearer resources of the UE on the 3GPP network side,
and the mobility management context of the UE in the MME. The detaching, by the UE, from the
5 3GPP network includes that the UE deletes the bearer resources and mobility management context
created when the UE accesses the 3GPP network.
[0026] If the UE has a dual radio capability, that is, the UE can access two networks at the same
time, after the UE is handed over or switched from a 3GPP network to a non-3GPP network, it is
judged whether the 3GPP network needs to detach the UE according to, for example, information of
10 operator policies. In other words, the prior art does not provide a solution for determining whether
to perform the user detachment when the UE is handed over or switched from a 3GPP network to a
non-3GPP network.
[0027] To sum up, the prior art neither provides a specific solution for user detachment when a
handover/change occurs in a heterogeneous network, nor provides a solution for judging whether to
15 perform user detachment when handover/change occurs in a heterogeneous network.
SUMMARY
[0028] An embodiment of the present invention provides a method for detaching a user when a
handover/change occurs in a heterogeneous network.
[0029] An embodiment of the present invention further provides another method for detaching a
20 user when a handover/change occurs in a heterogeneous network.
[0030] An embodiment of the present invention provides a system for detaching a user when a
handover/change occurs in a heterogeneous network.
[0031] An embodiment of the present invention provides a device for detaching a user when a
handover/change occurs in a heterogeneous network.
25 [0032] An embodiment of the present invention further provides a device for detaching a user
when a handover/change occurs in a heterogeneous network.
[0033] A method for detaching a user when handover/change occurs in a heterogeneous
network includes the following steps.
[0034] First, a UE is handed over or switched from a source network to a target network.
30 [0035] Next, the source network determines whether to detach the UE from the source network;
and if yes, detaches the UE from the source network; otherwise, does not detach the UE from the
source network.
[0036] Another method for user detachment when a handover/change occurs in a heterogeneous
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network includes the following steps.
[0037] First, a UE triggers handover or switching from a source network to a target network.
[0038] Next, the UE determines whether to be detached from the source network; if yes, the UE
is detached from the source network.
5 [0039] A system for user detachment when a handover/change occurs in a heterogeneous
network includes a UE and a network side.
[0040] The UE is adapted to be handed over or switched from a source network on the network
side to a target network on the network side.
[0041] The network side is adapted to hand over or switch the UE from the source network to
10 the target network, and detach the UE from the source network.
[0042] A device for detaching a user when a handover/change occurs in a heterogeneous
network includes a second handover/change module and a second detachment module on a network
side.
[0043] The second handover or switching module is adapted to hand over or switch a UE from a
15 source network on the network side to a target network on the network side.
[0044] The second detachment module is adapted to detach the UE from the source network.
[0045] A device for detaching a user when a handover/change occurs in a heterogeneous
network includes a first handover/change module and a first detachment module in a UE.
[0046] The first handover/change module is adapted to hand over or switch the UE from a
20 source network to a target network.
[0047] The first detachment module is adapted to detach the UE from the source network.
[0048] As known from the above solutions that, in the embodiments of the present invention,
when a handover/change occurs in the heterogeneous network, the UE is detached from the source
network after being determined by the source network or the UE is detached from the source
25 network after being determined by the UE. Thus, detachment of the user is realized by the source
network or the UE, when the handover/change occurs in the heterogeneous network.
BRIEF DESCRIPTION OF THE DRAWINGS
[0049] FIG. 1 is a schematic structural view of an evolution network system for a 3GPP network
in the prior art;
30 [0050] FIG. 2 is a flow chart of a process that the UE is handed over or switched from a 3GPP
network to a non-3GPP network in the prior art;
[0051] FIG. 3 is a flow chart of a process that a network element in a 3GPP network acquires
terminal capability of UE and access policy information of an operator when the UE accesses the
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3GPP network according to an embodiment of the present invention;
[0052] FIG. 4 is a flow chart of a process that a network element in a 3GPP network acquires
terminal capability of UE and access policy information of an operator when a location area or
terminal capability of the UE changes according to an embodiment of the present invention;
5 [0053] FIG. 5 is a flow chart of a process that a network element in a non-3GPP network
acquires terminal capability of UE and access policy information of an operator when the UE
accesses the non-3GPP network according to an embodiment of the present invention;
[0054] FIG. 6 shows a first example of a method for user detachment when a handover/change
occurs in a heterogeneous network according to an embodiment of the present invention;
10 [0055] FIG. 7 shows
handover/change occurs in
invention;
[0056] FIG. 8 shows
handover/change occurs in
15 invention;
[0057] FIG. 9 shows
handover/change occurs in
invention;
[0058] FIG. 10 shows
20 handover/change occurs in
invention;
[0059] FIG. 11 shows
a second example of the method for
a heterogeneous network according to an
a third example of the method for
a heterogeneous network according to an
a fourth example of the method for
a heterogeneous network according to an
a fifth example of the method for
a heterogeneous network according to an
a sixth example of the method for
user detachment when a
embodiment of the present
user detachment when a
embodiment of the present
user detachment when a
embodiment of the present
user detachment when a
embodiment of the present
user detachment when a
handover/change occurs in a heterogeneous network according to an embodiment of the present
invention; and
25 [0060] FIG. 12 is a schematic structural view of a system for user detachment when a
handover/change occurs in a heterogeneous network according to an embodiment of the present
invention.
DETAILED DESCRIPTION
[0061] To make the objectives, technical solutions, and beneficial effects of the present
30 invention more comprehensible, the present invention is described in detail below with reference to
the accompanying drawings and embodiments.
[0062] FIGs. 6-10 respectively show the first to fifth examples of a method for user detachment
when a handover/change occurs in a heterogeneous network according to an embodiment of the
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present invention. The main ideas of the examples are described as follows:
[0063] The UE is handed over or switched from a source network to a target network; the
source network determines whether to detach the UE from the source network; if yes, the UE will
be detached from the source network; otherwise, the UE will not be detached from the source
5 network.
[0064] FIG. 11 shows a sixth example of a method for user detachment when a handover/change
occurs in a heterogeneous network according to an embodiment of the present invention. The main
idea of this example is described as follows.
[0065] The UE triggers a handover or switching from a source network to a target network; the
10 UE determines whether to be detached from the source network; if yes, the UE will be detached
from the source network; otherwise, the UE will not be detached from the source network.
[0066] The two networks involved in the handover/change in the heterogeneous network
according to the embodiments of the present invention may be one of the 3GPP networks (such as a
GERAN network, a UTRAN network, or an EUTRAN network) and one of the non-3GPP networks
15 (such as a WLAN network, Wimax network, or CDMA network). Specifically, the embodiments
include the handover or switching of the UE from a 3GPP network to a non-3GPP network or the
handover or switching of the UE from a non-3GPP network to a 3GPP network. Here, the network
where the UE originally exists during the handover/change process is referred to as the source
network, and the other network involved in the handover/change process is referred as the target
20 network.
[0067] Then, the handover or switching from a 3GPP network to a non-3GPP network is taken
as an example to illustrate the first embodiment to the sixth embodiment of the method for UE
detachment when a handover/change occurs in the heterogeneous network of the present invention.
[0068] The UE and the network element in the 3GPP network acquire the terminal capability of
25 the UE, and the network element obtains access policy information of the operator, which are
provided for being used in the solution for UE detachment when the UE is handed over or switched
from the 3GPP network to the non-3GPP network according to the embodiments of the present
invention. Here, FIGs. 3 and 4 are used to illustrate the process that the network element in a 3GPP
network acquires the terminal capability of the UE and the access policy information of the operator
30 according to the embodiments of the present invention. FIG. 3 is a flow chart of a process that a
network element in a 3GPP network acquires terminal capability of UE and access policy
information of an operator when the UE accesses the 3GPP network. FIG. 4 is a flow chart of a
process that a network element in a 3GPP network acquires terminal capability of UE and access
policy information of an operator when a location area or terminal capability of the UE changes
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after the UE accesses the 3GPP network according to an embodiment of the present invention.
[0069] Referring to FIG. 3, the process that the network element in the 3GPP network acquires
the terminal capability of the UE and the access policy information of the operator when the UE
accesses the 3GPP network includes the following steps.
5 [0070] In step 301, the UE sends an attach request message carrying terminal capability of the
UE to the MME.
[0071] In this step, if the access network of the UE is GERAN/UTRAN, the SGSN serves as the
MME; if the access network of the UE is EUTRAN, the MME serves as the MME.
[0072] In this step, the terminal capability of the UE is represented by information element (IE)
10 of the radio capability supported by the UE. The radio capability supported by the UE is a single
radio capability (which indicates that the UE can access only one network at a certain time point) or
a dual radio capability (which indicates that the UE can access two or more networks at a certain
time point). An exemplary structure of the IE carrying the radio capability supported by the UE is
listed as follows. The IE includes a radio capability parameter supported by the UE. The parameter
15 may be: 1) the UE has a single radio capability; 2) the UE has a dual radio capability.
<UE Network Capability value part> ::=
UE Support Radio Capability
UE Support Radio Capability
0 Single Radio Capability
1 Dual Radio Capability
[0073] In step 302, the UE, the MME, and the HSS/AAA server implement an authentication
process of the UE to authenticate the UE.
20 [0074] In step 303, if the MME finds that the UE is in an invalid state, the MME sends an
update location message to the HSS/AAA server, and registers the UE with the HSS/AAA server.
The update location message carries the terminal capability of the UE.
[0075] In this step, if the access policy information of the operator is configured in the MME,
the update location request may carry the access policy information of the operator. The access
25 policy information of the operator includes: 1) a single radio access, that is, the UE can access only
one access network at a certain time point; and 2) a dual radio access, that is, the UE can access a
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plurality of access networks at a certain time point.
[0076] In step 304, the HSS/AAA server inserts subscription data of a user into the MME.
[0077] In this step, if the access policy information of the operator is configured or subscribed
in the HSS/AAA server, the HSS/AAA server carries the access policy information of the operator
5 in the subscription data, and sends the subscription data to the MME.
[0078] In step 305, the HSS/AAA server returns an update location Ack message to the MME.
[0079] In Step 306, the MME sends a create bearer request message to the serving GW, and the
serving GW sends the create bearer request message to the PDN GW.
[0080] In this step, the MME initiates a default bearer establishment process, so as to create a
10 default bearer of the UE in the MME, serving GW, and PDN GW. The create bearer request
message further carries a bearer type IE. The MME uses the bearer type IE to notify the created
bearer type to the serving GW and the PDN GW. If the MME sets the bearer type IE to default
bearer, the serving GW and the PDN GW are notified that the created bearer is a default bearer.
[0081] In this step, the terminal capability of the UE and the access policy information of the
15 operator are carried in the create bearer request message and sent to the serving GW and the PDN
GW.
[0082] Steps 307 and 308 are performed only when the policy and charging rules used by the
default bearer need to be obtained from the PCRF, and the access policy information of the operator
is configured in the PCRF.
20 [0083] In step 307, the PDN GW sends a PCC rules request message to the PCRF to obtain the
policy and charging rules used by the default bearer.
[0084] In step 308, the PCRF returns a PCC rules provision message to the PDN GW, and the
PCC rules provision message carries the access policy information of the operator.
[0085] In step 309, the PDN GW and the serving GW create a bearer context, and sets the
25 created bearer as the default bearer; the PDN GW returns a create bearer response message to the
serving GW, and the serving GW returns the create bearer response message to the MME.
[0086] If the access policy information of the operator is configured in the PCRF entity, or the
access policy information of the operator is configured in the PDN GW, or the access policy
information of the operator is configured in the serving GW, this step includes the following: the
30 create bearer response message carries the access policy information of the operator configured by
the PCRF, the PDN GW, or the serving GW.
[0087] In this step, the bearer context created by the PDN GW and the serving GW includes
bearer type information, which has two values: default bearer and dedicated bearer. For the default
bearer, the PDN GW and the serving GW set the bearer type information in the bearer context to
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default bearer. The PDN GW and the serving GW may know that the created bearer is a default
bearer in the following two manners.
[0088] 1) In step 306, the MME carries the bearer type IE in the create bearer request message,
and notifies the bearer type to the serving GW and the PDN GW through the bearer type IE. If the
5 carried bearer type IE set by the MME is in the value of default bearer, the created bearer is the
default bearer.
[0089] 2) The serving GW and the PDN GW determine whether the created bearer is the first
bearer created in the packet data network (PDN); if yes, the serving GW and the PDN GW
determine that the created bearer is a default bearer.
10 [0090] Other bearers are dedicated bearers. In this case, the serving GW and the PDN GW set
the bearer type information in the bearer context to dedicated bearer.
[0091] Step 310a is performed only when the access network type (RAT type) information in
the 3GPP network has been registered with the HSS/AAA server by the MME.
[0092] In step 310a, the MME registers access situations of the UE in the 3GPP network (for
15 example, the RAT type used by the UE) with the HSS/AAA server.
[0093] Step 310b is performed only when the RAT type information of the UE in the 3GPP
network has been registered with the HSS/AAA server by the PDN GW.
[0094] In step 310b, the PDN GW registers the access situations of the UE in the 3GPP network
(for example, the RAT type used by the UE) with the HSS/AAA server.
20 [0095] Through this step, the HSS/AAA server obtains the access network situations of the UE.
For example, in this embodiment, the HSS/AAA server knows that the RAT type of the UE is a
3GPP network type, or a specific network type in a 3GPP network.
[0096] The RAT type of the UE includes the following two situations.
[0097] 1) The RAT type of the UE is categorized into a 3GPP network and a non-3GPP
25 network.
[0098] 2) The RAT type of the UE is a specific network type used by the UE, for example,
GERAN network, UTRAN network, EUTRAN network, WLAN network, Wimax network, CDMA
network, etc.
[0099] In Step 311, the MME returns an Attach Accept message to a network element on an
30 access side, and the Attach Accept message carries information of the radio bearer to be established
by the UE.
[0100] As for the EUTRAN access network, the network element on the access side is ENodeB;
as for the UTRAN access network, the network element on the access side is RNC; as for the
GERAN access network, the network element on the access side is BSS. The MME may carry the
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access policy information of the operator in the Attach Accept message.
[0101] In step 312, the network element on the access side sends a bearer establishment request
message to the UE, and requests the UE to establish a radio bearer. The message carries the access
policy information of the operator sent by the MME.
5 [0102] The access policy information of the operator may also be notified to the UE in a
broadcast message of a cell.
[0103] In step 313, the UE establishes the bearer context, sets the created bearer to a default
bearer, and returns a radio bearer establishment response message to the network element on the
access side.
10 [0104] The UE adds bearer type information to the established bearer context, and the bear type
has the following two values: default bearer and dedicated bearer. For the default bearer, the UE
sets the bearer type information in the bearer context to default bearer. The bearer type added to the
established bearer context by the UE may be acquired through the following manners.
[0105] 1) In step 311, the MME carries a bearer type IE in the Attach Accept message, and
15 notifies the bearer type to the UE by the network element on the access side through the bearer type
IE. For the default bearer, the value of the bearer type IE carried by the MME is Default Bearer.
[0106] 2) The UE determines whether the created bearer is the first bearer created in the PDN;
if yes, the UE determines that the created bearer is a default bearer.
[0107] Other bearers are dedicated bearers. hi this case, the UE sets the bearer type information
20 in the bearer context to dedicated bearer.
[0108] In this embodiment, it should be noted that, the HSS and the AAA server may be
configured in different entities or in a same entity. If the HSS and the AAA server are configured in
different entities, the register message sent by the PDN GW in step 310a is forwarded to the HSS by
the AAA server, and the register message sent by the MME in step 310b is forwarded to the AAA
25 server by the HSS.
[0109] FIG. 4 is a flow chart of a process that a network element in a 3GPP network acquires
terminal capability of UE and access policy information of an operator when a location area or
terminal capability of the UE changes. The process includes the following steps.
[0110] In step 401, the UE sends a tracking area update or routing area update request
30 (TAU/RAU request) message carrying changed terminal capability of the UE to the MME.
[0111] If the access network of the UE is GERAN/UTRAN, the message sent by the UE is the
RAU request message; if the access network of the UE is EUTRAN, the message sent by the UE is
the TAU request message.
[0112] The terminal capability of the UE is represented by IEs of the radio capability supported
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by the UE. The radio capability supported by the UE is a single radio capability (which indicates
that the UE can access only one network at a certain time point) or a dual radio capability (which
indicates that the UE can access two or more networks at a certain time point). An exemplary
structure of the TE carrying the radio capability supported by the UE is listed as follows. The IE
5
includes a radio capability parameter supported by the UE. The parameter may be: 1) the UE has a
single radio capability; 2) the UE has a dual radio capability.
<UE Network Capability value part> ::=
UE Support Radio Capability
UE Support Radio Capability
0 Single Radio Capability
1 Dual Radio Capability
[0113] In step 402, the MME sends an update location message to the HSS/AAA server, and
10 registers the UE with the HSS/AAA server, in which the update location message carries the
changed terminal capability of the UE.
[0114] In this step, if the access policy information of the operator is configured in the MME,
the update location request message carries the access policy information of the operator. The
access policy information of the operator includes: 1) a single radio access, that is, the UE can
15 access only one access network at a certain time point; and 2) a dual radio access, that is, the UE
can access a plurality of access networks at a certain time point.
[0115] In step 403, the HSS/AAA server inserts subscription data of a user into the MME.
[0116] In this step, if the access policy information of the operator is configured or subscribed
in the HSS/AAA server, the HSS/AAA server delivers the changed access policy information of the
20 operator to the MME.
[0117] In Step 404, the HSS/AAA server returns an update location Ack message to the MME.
[0118] In Step 405, when the MME determines that the access policy information of the
operator and the terminal capability of the UE has changed, the MME sends an update bearer
request message to the serving GW, and the serving GW sends the update bearer request message to
25 the PDN GW, in which the update bearer request message carries the changed access policy
information of the operator and the changed terminal capability of the UE.
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[0119] In this step, the changed access policy information of the operator and the changed
terminal capability of the UE are notified to the serving GW and the PDN GW.
[0120] Step 406a is performed only when the RAT type information in the 3GPP network has
been registered with the HSS/AAA server by the MME and the information has changed.
5 [0121] In Step 406a, the MME registers the access situations of the UE in the 3GPP network
(for example, the RAT type used by the UE) with the HSS/AAA server.
[0122] Step 406b is performed only when the RAT type information in the 3GPP network has
been registered with the HSS/AAA server by the PDN GW and the information has changed.
[0123] In step 406b, if the RAT type information in the 3GPP network has been registered with
10 the HSS/AAA server by the PDN GW and the information has changed, the PDN GW registers the
access situations of the UE in the 3GPP network (for example, the RAT type used by the UE) with
the HSS/AAA server.
[0124] In step 407, the MME returns a TAU/RAU accept message to the UE, and the MME
may deliver the changed access policy information of the operator to the UE in the TAU/RAU
15 accept message.
[0125] The changed access policy information of the operator may also be notified to the UE in
a broadcast message of the cell.
[0126] FIG. 4 shows the process that the network element in a 3GPP network acquires the
changed terminal capability of the UE and the changed access policy information of the operator
20 when the terminal capability of the UE and the access policy information of the operator both have
changed. The process that the network element in the 3GPP network acquires the changed terminal
capability of the UE or the changed access policy information of the operator when the terminal
capability of the UE or the access policy information of the operator has changed is similar to the
process of FIG. 4, which thus is not described in detail here.
25 [0127] The UE and the network element in a non-3GPP network acquire the terminal capability
of the UE, and the network element acquires the access policy information of the operator, which
are provided for being used in the solution for UE detachment when the UE is handed over or
switched from the non-3GPP network to a 3GPP network according to the embodiments of the
present invention. FIG. 5 is used to illustrate the process that the network element in a non-3GPP
30 network acquires the terminal capability of the UE and the access policy information of the operator
according to the embodiments of the present invention. FIG. 5 is a flow chart of a process that a
network element in a non-3GPP network acquires terminal capability of UE and access policy
information of an operator when the UE accesses the non-3GPP network.
[0128] Referring to FIG. 5, the process that the network element in the non-3GPP network
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acquires the terminal capability of the UE and the access policy information of the operator when
the UE accesses the non-3GPP network includes the following steps.
[0129] In step 501, the UE sends an access request message carrying the terminal capability of
the UE to a non-3GPP GW.
5 [0130] In this step, if the non-3GPP network is a WLAN network, the non-3GPP GW is an
EPDG; if the non-3GPP network is a Wimax network, the non-3GPP GW is an ASN GW; and if the
non-3GPP network is a CDMA network, the non-3GPP GW is an AGW.
[0131] In this step, the terminal capability of the UE is represented by IEs of the radio
capability supported by the UE. The radio capability supported by the UE is a single radio
10 capability (which indicates that the UE can access only one network at a certain time point) or a
dual radio capability (which indicates that the UE can access two or more networks at a certain time
point). An exemplary structure of the IE carrying the radio capability supported by the UE is listed
as follows. The IE includes a radio capability parameter supported by the UE. The parameter may
be: 1) the UE has a single radio capability; 2) the UE has a dual radio capability.
15
<UE Network Capability value part> ::=
UE Support Radio Capability
UE Support Radio Capability
0 Single Radio Capability
1 Dual Radio Capability
[0132] In step 502, an authentication process is performed between the UE, the non-3GPP GW,
and the HSS/AAA server.
[0133] In this step, if the access policy information of the operator is configured in the
20 non-3GPP GW, an access authentication message may carry the access policy information of the
operator to the HSS/AAA server. The access policy information of the operator includes: 1) a single
radio access, that is, the UE can access only one access network at a certain time point; and 2) a
dual radio access, that is, the UE can access a plurality of access networks at a certain time point. In
this step, if the access policy information of the operator is configured in the HSS/AAA server, the
25 access authentication message may carry the access policy information of the operator to the
non-3GPP GW.
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[0134] In step 503a, the non-3GPP GW sends a proxy binding update message to the PDN GW.
[0135] In this step, it is assumed that an interface protocol between the non-3GPP GW and the
PDN GW is the proxy mobile internet protocol (PMIP). If an interface protocol between the UE and
the PDN GW is the client mobile internet protocol (CMIP), step 503a is replaced by step 503b, in
5 which the UE sends a binding update message to the PDN GW.
[0136] In this step, the terminal capability of the UE and the access policy information of the
operator may be carried in the proxy binding update message or the binding update message and
sent to the PDN GW.
[0137] In step 504, if the policy and charging rules used by the UE need to be obtained from the
10 PCRF, the PDN GW sends a PCC rules request message to the PCRF to obtain the policy and
charging rules used by the UE.
[0138] In step 505, the PCRF provides a PCC rules provision message of the policy and
charging rules used by the UE to the PDN GW. If the access policy information of the operator is
configured in the PCRF, the PCRF transmits the access policy information of the operator to the
15 PDN GW via the PCC rules provision message.
[0139] In step 506, if the policy and charging rules used by the UE need to be obtained from the
PCRF, the non-3GPP GW sends a PCC rules request message to the PCRF to obtain the policy and
charging rules used by the UE.
[0140] In step 507, the PCRF provides a PCC rules provision message of the policy and
20 charging rules used by the UE to the non-3GPP GW. If the access policy information of the operator
is configured in the PCRF, the PCRF transmits the access policy information of the operator to the
non-3GPP GW via the PCC rules provision message.
[0141] In step 508a, the PDN GW sends a proxy binding Ack message to the non-3GPP GW.
[0142] In this step, it is assumed that the interface protocol between the non-3GPP GW and the
25 PDN GW is the PMIP. If the interface protocol between the UE and the PDN GW is the CMIP, step
508a is replaced by step 508b, in which the PDN GW sends a binding Ack message to the UE.
[0143] In step 509, if the RAT type information in the non-3GPP network is registered with the
HSS/AAA server by the PDN GW, the PDN GW registers the access situations of the UE in the
non-3GPP network (for example, the RAT type used by the UE) with the HSS/AAA server.
30 [0144] In step 510, if the RAT type information in the non-3GPP network is registered with the
HSS/AAA server by the non-3GPP GW, the non-3GPP GW registers the access situations of the UE
in the non-3GPP network (for example, the RAT type used by the UE) with the HSS/AAA server.
[0145] Through step 509 or step 510, the HSS/AAA server obtains the access network situations
of the UE. For example, in this embodiment, the HSS/AAA server knows that the RAT type of the
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UE is a non-3GPP network type, or a specific network type in the non-3GPP network. This step is
optional.
[0146] The RAT type used by the UE may be processed through the following two manners.
[0147] 1) The RAT type used by the UE is categorized into a 3GPP network and a non-3GPP
5 network.
[0148] 2) The RAT type used by the UE is a specific network type used by the UE, for example,
a GERAN network, a UTRAN network, an EUTRAN network, a WLAN network, Wimax network,
or a CDMA network.
[0149] In step 511, the non-3GPP GW returns an access accept message to the UE. The
10 non-3GPP GW may carry the access policy information of the operator in the access accept
message.
[0150] In this embodiment, it should be noted that, the HSS and the AAA server may be
configured in different entities or in the same entity. If the HSS and the AAA server are configured
in different entities, the register message sent by the PDN GW in step 509 is forwarded to the HSS
15 by the AAA server, and the register message sent by the non-3GPP GW in Step 510 is forwarded to
the AAA server by the HSS.
[0151] FIG. 6 shows a first example of a method for detaching a user when a handover/change
occurs in a heterogeneous network according to an embodiment of the present invention. The
method includes the following steps.
20 [0152] Steps 601-607 are the same as steps 201-207 in FIG. 2.
[0153] In step 608a, the PDN GW sends a delete bearer request message to the serving GW, and
then the serving GW sends the received delete bearer request message to the MME, and adds a
cause IE in the delete bearer request message to indicate the reason of the deletion, and the MME
deletes the bearer resources.
25 [0154] In this step, as for the bearer deletion caused by the handover or switching of the UE
from the 3GPP network to the non-3GPP network, the PDN GW sets the cause IE as "UE's
accessing RAT changed from a 3GPP network to a non-3GPP network". As for the bearer deletion
that is not caused by the handover/change, the PDN GW sets the cause IE to other values.
Alternatively, the delete bearer request message sent by the PDN GW does not carry the cause IE,
30 and in this case, once the MME receives the delete bearer request message sent by the serving GW,
the message is defaulted to be caused by the handover or switching of the UE from the 3GPP
network to the non-3GPP network. In this embodiment, the message carrying the cause IE is taken
as an example.
[0155] In this step, it is assumed that an interface protocol between the PDN GW and the
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serving GW is GPRS tunneling protocol (GTP). If the interface protocol between the PDN GW and
the serving GW is the PMIP, step 608a is replaced by step 608b, in which the PDN GW sends a
binding revocation indication message to the serving GW; the cause IE is added to the binding
revocation indication message; the serving GW sends the delete bearer request message carrying the
5 cause IE sent by the PDN GW to the MME; and the MME deletes the bearer resources after
receiving the delete bearer request message.
[0156] As for the binding revocation indication caused by the handover or switching of the UE
from the 3GPP network to the non-3GPP network, the PDN GW sets the cause IE as "UE's
accessing RAT changed from a 3GPP network to a non-3GPP network". As for the bearer deletion
10 that is not caused by the handover/change, the PDN GW sets the cause IE to other values.
Alternatively, the binding revocation indication message sent by the PDN GW does not carry the
cause IE, and in this case, once the MME receives the delete bearer request message sent by the
serving GW, the message is default to be caused by the handover or switching of the UE from the
3GPP network to the non-3GPP network. In this embodiment, the message carrying the cause IE is
15 taken as an example.
[0157] Step 608a or step 608b further includes the following: the MME deletes the bearer
resources after receiving the delete bearer request message. If the MME finds that all bearer
resources of the UE are deleted, the MME further determines whether to delete an MM context (i.e.,
detaching the UE from the 3GPP network) and whether to send a detach request message to the UE.
20 Specifically, the process includes the following circumstances.
[0158] 1) The MME makes the following determination according to the cause IE carried in the
delete bearer request. The MME determines whether the cause IE carried in the received delete
bearer request message is represented as "UE's accessing RAT changed from a 3GPP network to a
non-3GPP network"; if yes, the MME deletes the MM context of the UE, and does not send the
25 detach request message to the UE; otherwise, the MME sends the detach request message to the UE
and notifies the UE to delete the MM context and the bearer resources of the 3GPP network in the
UE.
[0159] 2) The MME makes the following determination according to the IE carried in the delete
bearer request and the terminal capability of the UE. If the MME determines that the IE carried in
30 the received delete bearer request message is represented as "UE's accessing RAT changed from a
3GPP network to a non-3GPP network", and the MME knows that the terminal capability of the UE
is "single radio capability", the MME deletes the MM context of the UE, and does not send the
detach request message to the UE; as for the bearer deletion caused by other reasons, the MME
deletes the MM context of the UE, and sends the detach request message to the UE. If the MME
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knows that the terminal capability of the UE is "multi radio capability", the MME does not delete
the MM context of the UE (that is, does not detach the UE from the 3GPP network).
[0160] 3) The MME makes the following determination according to the IE carried in the delete
bearer request and the access policy information of the operator. If the MME determines that the IE
5 carried in the received delete bearer request message is represented as "UE's accessing RAT
changed from a 3GPP network to a non-3GPP network", and the MME knows that the access policy
information of the operator is "single radio access", the MME deletes the MM context of the UE,
and does not send the detach request message to the UE; as for the bearer deletion caused by other
reasons, the MME deletes the MM context of the UE, and sends the detach request message to the
10 UE. If the MME knows that the access policy information of the operator is "multi radio access",
the MME does not delete the MM context of the UE (that is, does not detach the UE from the 3GPP
network).
[0161] 4) The MME makes the following determination according to the IE carried in the delete
bearer request, the terminal capability of the UE, and the access policy information of the operator.
15 If the MME determines that the IE carried in the received delete bearer request message is
represented as "UE's accessing RAT changed from a 3GPP network to a non-3GPP network", the
terminal capability of the UE is "dual radio capability", and the access policy information of the
operator is "single radio access", or if the MME determines that the IE carried in the received delete
bearer request message is represented as "UE's accessing RAT changed from a 3GPP network to a
20 non-3GPP network", the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability", or if the MME determines that the IE
carried in the received delete bearer request message is represented as "UE's accessing RAT
changed from a 3GPP network to a non-3GPP network", the terminal capability of the UE is "single
radio capability", and the access policy information of the operator is "single radio access", the
25 MME deletes the MM context of the UE, and does not send the detach request message to the UE;
as for the bearer deletion caused by other reasons, the MME deletes the MM context of the UE, and
sends the detach request message to the UE. If the MME knows that the terminal capability of the
UE is "dual radio capability" and the access policy information of the operator is "multi radio
access", the MME does not delete the MM context of the UE (that is, does not detach the UE from
30 the 3GPP network).
[0162] In step 609a, the MME returns a delete bearer response message to the serving GW, and
the serving GW returns the delete bearer response message to the PDN GW.
[0163] In this step, the interface protocol between the PDN GW and the serving GW is the GIP,
and if the interface protocol between the PDN GW and the serving GW is the PMIP, Step 609a is
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replaced by step 609b, in which the MME returns the delete bearer response message to the serving
GW, and the serving GW returns a binding revocation Ack message to the PDN GW.
[0164] In step 610, if the MME sends the detach request message to the UE, the UE deletes the
MM context and the bearer resources after receiving the detach request message, and returns a
5 Detach Accept message to the MME.
[0165] In step 611, if the MME finds that the subscription data and the MM context of the UE
are deleted, the MME sends a purge UE message to the HSS/AAA server, and the HSS/AAA server
purges the record of the UE, and returns a purge UE Ack message to the MME.
[0166] In this step, it is determined whether to delete the subscription data of the UE by the
10 MME according to the actual conditions. This step is optional.
[0167] In the above embodiment, after step 607, it is determined whether to detach the UE from
the 3GPP network. Specifically, the determination process is described as follows: according to the
handover/change in the access network, or according to the handover/change of the UE in the
access network and the terminal capability of the UE, or according to the handover/change of the
15 UE in the access network and the access policy information of the operator, or according to the
handover/change of the UE in the access network, the terminal capability of the UE, and the access
policy information of the operator, it is determined whether to detach the UE from the 3GPP
network, which particularly includes the following four circumstances.
[0168] 1) It is determined whether the UE is handed over or switched from the 3GPP network to
20 the non-3GPP network; if yes, the MM context and bearer resources used by the UE in the 3GPP
network are deleted.
[0169] 2) It is determined whether the UE is handed over or switched from the 3GPP network to
the non-3GPP network and whether the terminal capability of the UE is "single radio capability"; if
yes, the bearer resources and the MM context used by the UE in the 3GPP network are deleted.
25 [0170] 3) It is determined whether the UE is handed over or switched from the 3GPP network to
the non-3GPP network and whether the access policy information of the operator is "single radio
access"; if yes, the bearer resources and the MM context used by the UE in the 3GPP network are
deleted.
[0171] 4) It is determined whether the handover/change of the UE in the access network, the
30 terminal capability of the UE, and the access policy information of the operator satisfy one of the
following three conditions: 1. the UE is handed over or switched from the 3GPP network to the
non-3GPP network, the terminal capability of the UE is "dual radio capability", and the access
policy information of the operator is "single radio access"; 2. the UE is handed over or switched
from the 3GPP network to the non-3GPP network, the access policy information of the operator is
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"multi radio access", and the terminal capability of the UE is "single radio capability"; and 3. the
UE is handed over or switched from the 3GPP network to the non-3GPP network, the terminal
capability of the UE is "single radio capability", and the access policy information of the operator is
"single radio access".
5 [0172] If yes, the bearer resources and the MM context used by the UE in the 3GPP network are
deleted.
[0173] Moreover, the delete bearer request added with the cause IE in step 608 may be replaced
by another message, for example, replaced by a release bearer request message. The release bearer
request message indicates that the reason for deleting the bearer is the handover or switching of the
10 UE from the 3GPP network to the non-3GPP network; alternatively, the delete bearer request
message sent in step 608 does not carry the reason for deleting the bearer, and when the UE is
handed over or switched from the 3GPP network to the non-3GPP network, a normal delete bearer
request is sent to the MME. In step 608, after receiving the specific message or the normal delete
bearer request message, the MME deletes the bearer resources; and the operations of the MME after
15 the bearer resources are deleted are similar to the operations of the MME after receiving the delete
bearer request message.
[0174] As for the first embodiment, it should be noted that the detachment method in this
embodiment is also applicable to the handover or switching of the UE from a non-3GPP network to
a 3GPP network.
20 [0175] In step I, after the UE is handed over or switched to a 3GPP network, the PDN GW
sends the binding revocation indication message to a non-3GPP GW. The message carries the cause
IE indicating the reason for the binding revocation. As for the binding revocation caused by the
handover or switching from the non-3GPP network to the 3GPP network, the PDN GW sets the
cause IE as "UE's accessing RAT changed from a non-3GPP network to a 3GPP network"; and as
25 for the binding revocation that is not caused by the handover/change, the PDN GW sets the cause IE
to other values.
[0176] In step II, the non-3GPP GW deletes the bearer resources after receiving the binding
revocation indication message. If the non-3GPP GW finds that all bearer resources of the UE are
deleted, the non-3GPP GW further determines whether to delete the MM context of the UE (that is,
30 to detach the UE from the non-3GPP network), which specifically includes the following
circumstances.
[0177] 1) The non-3GPP GW makes the following determination according to the Cause IE
carried in the binding revocation indication message, in which the non-3GPP GW determines
whether the cause IE carried in the binding revocation indication message is represented as "UE's
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accessing RAT changed from a non-3GPP network to a 3GPP network"; if yes, the non-3GPP GW
deletes the MM context of the UE, and does not send the detach request message to the UE;
otherwise, the non-3GPP GW sends the detach request message to the UE, and notifies the UE to
delete the MM context and bearer resources of the non-3GPP network in the UE.
5 [0178] 2) The non-3GPP GW makes the following determination according to the IE carried in
the binding revocation indication message and the terminal capability of the UE, in which if the
non-3GPP GW determines that the IE carried in the received binding revocation indication message
is represented as "UE's accessing RAT changed from a non-3GPP network to a 3GPP network", and
the non-3GPP GW knows that the terminal capability of the UE is "single radio capability", the
10 non-3GPP GW deletes the MM context of the UE, and does not send the detach request message to
the UE; as for the bearer deletion caused by other reasons, the non-3GPP GW deletes the MM
context of the UE, and sends the detach request message to the UE. If the non-3GPP GW knows
that the terminal capability of the UE is "multi radio capability", the non-3GPP GW does not delete
the MM context of the UE (that is, does not detach the UE from the non-3GPP network).
15 [0179] 3) The non-3GPP GW makes the following determination according to the IE carried in
the binding revocation indication message and the access policy information of the operator, in
which if the non-3GPP GW determines that the IE carried in the received binding revocation
indication message is represented as "UE's accessing RAT changed from a non-3GPP network to a
3GPP network", and the non-3GPP GW knows that the access policy information of the operator is
20 "single radio access", the non-3GPP GW deletes the MM context of the UE, and does not send the
detach request message to the UE; as for the bearer deletion caused by other reasons, the non-3GPP
GW deletes the MM context of the UE, and sends the detach request message to the UE. If the
non-3GPP GW knows that the access policy information of the operator is "multi radio access", the
non-3GPP GW does not delete the MM context of the UE (that is, does not detach the UE from the
25 non-3GPP network).
[0180] 4) The non-3GPP GW makes the following determination according to the IE carried in
the binding revocation indication message, the terminal capability of the UE, and the access policy
information of the operator, in which if the non-3GPP GW determines that the IE carried in the
received binding revocation indication message is represented as "UE's accessing RAT changed
30 from a non-3GPP network to a 3GPP network", the terminal capability of the UE is "dual radio
capability", and the access policy information of the operator is "single radio access", or if the
non-3GPP GW determines that the IE carried in the received binding revocation indication message
is represented as "UE's accessing RAT changed from a non-3GPP network to a 3GPP network", the
access policy information of the operator is "multi radio access", and the terminal capability of the
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UE is "single radio capability", or if the non-3GPP GW determines that the IE carried in the
received binding revocation indication message is represented as "UE's accessing RAT changed
from a non-3GPP network to a 3GPP network", the terminal capability of the UE is "single radio
capability", and the access policy information of the operator is "single radio access", the non-3GPP
5 GW deletes the MM context of the UE, and does not send the detach request message to the UE; as
for the bearer deletion caused by other reasons, the non-3GPP GW deletes the MM context of the
UE, and sends the detach request message to the UE. If the non-3GPP GW knows that the terminal
capability of the UE is "dual radio capability", and the access policy information of the operator is
"multi radio access", the non-3GPP GW does not delete the MM context of the UE (that is, does not
10 detach the UE from the non-3GPP network).
[0181] FIG. 7 shows a second example of the method for user detachment when a
handover/change occurs in a heterogeneous network according to an embodiment of the present
invention. The method includes the following steps.
[0182] Steps 701-707 are the same as steps 201-207 in FIG. 2.
15 [0183] In step 708a, the PDN GW determines whether to delete the default bearer of the UE; if
yes, the PDN GW sends the delete bearer request message corresponding to the default bearer to the
serving GW, and the serving GW sends the received delete bearer request message to the MME.
[0184] The default bearer is a part of the bearer resources.
[0185] In this step, the interface protocol between the PDN GW and the serving GW is the GTP.
20 If the interface protocol between the PDN GW and the serving GW is the PMIP, step 708a is
replaced by step 708b, in which the PDN GW sends the binding revocation indication message to
the serving GW, and the serving GW determines whether to delete the default bearer of the UE; if
yes, the serving GW sends the delete bearer request message corresponding to the default bearer to
the MME, and the MME deletes the MM context and the bearer resources.
25 [0186] In step 708a or 708b, the PDN GW/serving GW determines whether to delete the default
bearer of the UE in the following manners. The PDN GW/serving GW determines whether to delete
the default bearer of the UE according to the handover/change of the UE in the access network, or
according to the handover/change of the UE in the access network and the terminal capability of the
UE, or according to the handover/change of the UE in the access network and the access policy
30 information of the operator, or according to the handover/change of the UE in the access network,
the terminal capability of the UE, and the access policy information of the operator. The terminal
capability of the UE and the access policy information of the operator are obtained by the network
elements according to the flows shown in FIGs. 3 and 4. Specifically, the determination process
includes the following circumstances.
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[0187] 1) The PDN GW/serving GW determines whether to delete the default bearer of the UE
according to the handover/change of the UE in the access network, in which the PDN GW/serving
GW determines whether the UE is handed over or switched from the 3GPP network to the
non-3GPP network; if yes, the PDN GW/serving GW determines to delete the default bearer of the
5 UE, and sends the delete bearer request message corresponding to the default bearer to the MME.
[0188] 2) The PDN GW/serving GW determines whether to delete the default bearer of the UE
according to the handover/change of the UE in the access network and the terminal capability of the
UE, in which the PDN GW/serving GW determines whether the UE is handed over or switched
from the 3GPP network to the non-3GPP network and whether the terminal capability of the UE is
10 "single radio capability"; if yes, the PDN GW/serving GW determines to delete the default bearer of
the UE, and sends the delete bearer request message corresponding to the default bearer to the
MME.
[0189] 3) The PDN GW/serving GW determines whether to delete the default bearer of the UE
according to the handover/change of the UE in the access network and the access policy
15 information of the operator, in which the PDN GW/serving GW determines whether the UE is
handed over or switched from the 3GPP network to the non-3GPP network and whether the access
policy information of the operator is "single radio access"; if yes, the PDN GW/serving GW
determines to delete the default bearer of the UE, and sends the delete bearer request message
corresponding to the default bearer to the MME.
20 [0190] 4) The PDN GW/serving GW determines whether to delete the default bearer of the UE
according to the handover/change of the UE in the access network, the terminal capability of the UE,
and the access policy information of the operator, in which the PDN GW/serving GW determines
whether the handover/change of the UE in the access network, the terminal capability of the UE,
and the access policy information of the operator satisfy one of the following three conditions: 1.
25 the UE is handed over or switched from the 3GPP network to the non-3GPP network, the terminal
capability of the UE is "dual radio capability", and the access policy information of the operator is
"single radio access"; 2. the UE is handed over or switched from the 3GPP network to the
non-3GPP network, the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability"; and 3. the UE is handed over or switched
30 from the 3GPP network to the non-3GPP network, the terminal capability of the UE is "single radio
capability", and the access policy information of the operator is "single radio access".
[0191] If yes, the PDN GW/serving GW determines to delete the default bearer of the UE, and
sends the delete bearer request message corresponding to the default bearer to the MME.
[0192] In step 709a, the MME returns a delete bearer response message to the serving GW, and
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the serving GW returns the delete bearer response message to the PDN GW.
[0193] In this step, the interface protocol between the PDN GW and the serving GW is the GTP.
If the interface protocol between the PDN GW and the serving GW is the PMIP, step 709a is
replaced by step 709b, in which the MME returns the delete bearer response message to the serving
5 GW, and the serving GW returns the binding revocation Ack message to the PDN GW.
[0194] In step 710, if the MME finds that the default bearer of the UE is deleted, the MME
deletes the MM context of the UE (that is, the MME detaches the UE from the 3GPP network).
[0195] If the MME finds that the subscription data and the MM context of the UE are deleted,
the MME sends a purge UE message to the HSS/AAA server, and the HSS/AAA server purges the
10 record of the UE, and returns a purge UE Ack message to the MME.
[0196] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0197] Step 709 and step 710 may be performed at any order.
[0198] In the above embodiment, the UE is detached after step 707. The detachment process is
15 as follows: according to the handover/change of the UE in the access network, or according to the
handover/change of the UE in the access network and the terminal capability of the UE, or
according to the handover/change of the UE in the access network and the access policy
information of the operator, or according to the handover/change of the UE in the access network,
the terminal capability of the UE, and the access policy information of the operator, the UE
20 determines whether to perform the detachment, which specifically includes the following four
circumstances.
[0199] 1) It is determined whether the UE is handed over or switched from the 3GPP network to
the non-3GPP network; if yes, the UE also deletes the default bearer, and deletes the MM context
and bearer resources used by the UE in the 3GPP network (that is, the UE is detached from the
25 3GPP network); otherwise, the UE does not delete the default bearer, and does not delete the MM
context used by the UE in the 3GPP network.
[0200] 2) It is determined whether the UE is handed over or switched from the 3GPP network to
the non-3GPP network and whether the terminal capability of the UE is "single radio capability"; if
yes, the UE also deletes the default bearer, and deletes the MM context and bearer resources used
30 by the UE in the 3GPP network (that is, the UE is detached from the 3GPP network); otherwise, the
UE does not delete the default bearer, and does not delete the MM context used by the UE in the
3GPP network.
[0201] 3) It is determined whether the UE is handed over or switched from the 3GPP network to
the non-3GPP network and whether the access policy information of the operator is "single radio
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access" ; if yes, the UE also deletes the default bearer, and deletes the MM context and bearer
resources used by the UE in the 3GPP network (that is, the UE is detached from the 3GPP network);
otherwise, the UE does not delete the default bearer, and does not delete the MM context used by
the UE in the 3GPP network.
5 [0202] 4) It is determined whether the handover/change of the UE in the access network, the
terminal capability of the UE, and the access policy information of the operator satisfy one of the
following three conditions: 1. the UE is handed over or switched from the 3GPP network to the
non-3GPP network, the terminal capability of the UE is "dual radio capability", and the access
policy information of the operator is "single radio access"; 2. the UE is handed over or switched
10 from the 3GPP network to the non-3GPP network, the access policy information of the operator is
"multi radio access", and the terminal capability of the UE is "single radio capability"; and 3. the
UE is handed over or switched from the 3GPP network to the non-3GPP network, the terminal
capability of the UE is "single radio capability", and the access policy information of the operator is
"single radio access".
15 [0203] If yes, the UE deletes the default bearer, and deletes the MM context and bearer
resources used by the UE in the 3GPP network (that is, the UE is detached from the 3GPP network);
otherwise, the UE does not delete the default bearer, and does not delete the MM context used by
the UE in the 3GPP network.
[0204] FIG. 8 shows a third example of the method for user detachment when a
20 handover/change occurs in a heterogeneous network according to an embodiment of the present
invention. The method includes the following steps.
[0205] Steps 801-807 are the same as steps 201-207 in FIG. 2.
[0206] In step 808a, the PDN GW sends a detach request message to the MME through the
serving GW, and the detach request message carries a cause value represented as "detach because of
25 UE's accessing RAT changed from a 3GPP network to a non-3GPP network", which indicates that
the detach request message is caused by the handover or switching of the UE from the 3GPP
network to the non-3GPP network.
[0207] In this step, no interface exists between the PDN GW and the MME. If an interface
exists between the PDN GW and the MME, step 808a is replaced by step 808b, in which the PDN
30 GW sends a Detach Request message to the MME, and the Detach Request message carries a Cause
value represented as "Detach because of UE's accessing RAT changed from a 3GPP network to a
non-3GPP network", indicating that the detach request message is caused by the handover/change
of the UE from the 3GPP network to the non-3GPP network.
[0208] If the interface protocol between the PDN GW and the MME is the PMIP, step 808a is
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replaced by step 808c, in which the PDN GW sends a binding revocation Ind message to the serving
GW, and the serving GW sends the detach request message to the MME, and the detach request
message carries a cause value represented as "detach because of UE's accessing RAT changed from
a 3GPP network to a non-3GPP network", indicating that the detach request message is caused by
5 the handover/change of the UE from the 3GPP network to the non-3GPP network.
[0209] In step 808a, 808b, or 808c, before the detach request message is sent, the process
further includes determining whether to send the detach request message according to the
handover/change of the UE in the access network, or according to the handover/change of the UE in
the access network and the terminal capability of the UE, or according to the handover/change of
10 the UE in the access network and the access policy information of the operator, or according to the
handover/change of the UE in the access network, the terminal capability of the UE, and the access
policy information of the operator; if yes, the detach request message is sent to the MME; otherwise,
the process ends. In steps 808a and 808b, the determination is performed by the PDN GW, and in
step 808c, the determination is performed by the serving GW. Whether to send the detach request
15 message may be determined according to the following circumstances.
[0210] 1) The PDN GW/serving GW determines whether to send the detach request message to
the MME according to the handover/change of the UE in the access network, in which the PDN
GW/serving GW determines whether the UE is handed over from the 3GPP network to the
non-3GPP network; if yes, the detach request message is sent to the MME; otherwise, the process
20 ends.
[0211] 2) The PDN GW/serving GW determines whether to send the detach request message to
the MME according to the handover/change of the UE in the access network and the terminal
capability of the UE, in which the PDN GW/serving GW determines whether the UE is handed over
or switched from the 3GPP network to the non-3GPP network and whether the terminal capability
25 of the UE is "single radio capability"; if yes, the detach request message is sent to the MME;
otherwise, the process ends.
[0212] 3) The PDN GW/serving GW determines whether to send the detach request message to
the MME according to the handover/change of the UE in the access network and the access policy
information of the operator, in which the PDN GW/serving GW determines whether the UE is
30 handed over or switched from the 3GPP network to the non-3GPP network and whether the access
policy information of the operator is "single radio access"; if yes, the detach request message is sent
to the MME; otherwise, the process ends.
[0213] 4) The PDN GW/serving GW determines whether to send the detach request message to
the MME according to the handover/change of the UE in the access network, the terminal capability
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of the UE, and the access policy information of the operator, in which the PDN GW/serving GW
determines whether the handover/change of the UE in the access network, the terminal capability of
the UE, and the access policy information of the operator satisfy one of the following three
conditions: 1. the UE is handed over or switched from the 3GPP network to the non-3GPP network,
5 the terminal capability of the UE is "dual radio capability", and the access policy information of the
operator is "single radio access"; 2. the UE is handed over or switched from the 3GPP network to
the non-3GPP network, the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability"; and 3. the UE is handed over or switched
from the 3GPP network to the non-3GPP network, the terminal capability of the UE is "single radio
10 capability", and the access policy information of the operator is "single radio access".
[0214] If yes, the detach request message is sent to the MME; otherwise, the process ends.
[0215] In step 809a, the MME receives the detach request message, deletes the MM context,
and sends a detach response message to the PDN GW through the serving GW.
[0216] In this step, no interface exists between the PDN GW and the MME. If an interface
15 exists between the PDN GW and the MME, step 809a is replaced by step 809b, in which the MME
receives the detach request message, deletes the MM context, and directly sends a detach response
message to the PDN GW.
[0217] If the interface protocol between the PDN GW and the MME is the PMIP, step 809a is
replaced by step 809c, in which the PDN GW sends the detach response message to the serving GW,
20 and the serving GW returns a binding revocation Ack message to the PDN GW.
[0218] In step 810, the MME initiates a bearer deletion process to delete the bearer resources
used by the UE on the 3GPP network side (including the MME, serving GW, and PDN GW).
[0219] In step 811, if the MME finds that the subscription data and the MM context of the UE
are deleted, the MME sends a purge UE message to the HSS/AAA server, and then the HSS/AAA
25 server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0220] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0221] Step 809 and Step 811 may be performed at any order.
[0222] In this embodiment, the UE is detached after step 807, and the detailed process thereof
30 can be known with reference to the descriptions of the third example of the method for user
detachment.
[0223] In this embodiment, it should be noted that, the detach request message sent by the PDN
GW or serving GW may not carry the cause value.
[0224] In this embodiment, it should be noted that, the method in this embodiment is also
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applicable to the handover or switching of the UE from the non-3GPP network to the 3GPP
network.
[0225] After the UE is handed over or switched from the non-3GPP network to the 3GPP
network, the PDN GW determines whether to detach the UE from the non-3GPP network and
5 whether to send the detach request message to the non-3GPP GW, which includes determining
whether to send the detach request message according to the handover/change of the UE in the
access network, or according to the handover/change of the UE in the access network and the
terminal capability of the UE, or according to the handover/change of the UE in the access network
and the access policy information of the operator, or according to the handover/change of the UE in
10 the access network, the terminal capability of the UE, and the access policy information of the
operator; if yes, the detach request message is sent to the non-3GPP GW. The detailed process
thereof can be known with reference to the descriptions of the above embodiment.
[0226] FIG. 9 shows a fourth example of the method for user detachment when a
handover/change occurs in a heterogeneous network according to an embodiment of the present
15 invention. The method includes the following steps.
[0227] Steps 901-907 are the same as steps 201-207 in FIG. 2.
[0228] In step 908, the PDN GW sends a register request message to the HSS/AAA server, and
the message carries an RAT type of the UE.
[0229] The value of the RAT Type may be one of the following two circumstances.
20 [0230] The RAT Type may be a 3GPP network, which indicates that the network that the UE
accesses currently is a 3GPP network; and the RAT Type may be a non-3GPP network, which
indicates that the network that the UE accesses currently is a non-3GPP network.
[0231] The RAT Type of the UE may also be a specific network type, for example, GERAN,
UTRAN, or EUTRAN network in the 3GPP networks, or WLAN, Wimax, and CDMA network in
25 the non-3GPP networks.
[0232] Step 906 and step 908 may be performed at any order.
[0233] In step 909, the HSS/AAA server returns a register response message to the PDN GW.
[0234] In step 910, when the HSS/AAA server determines that the RAT Type of the UE
registered last time is inconsistent with that of the UE registered this time, the HSS/AAA server
30 sends a cancel location message to the MME, in which the cancel location message carries a cause
value represented as "Cancel because of UE's accessing RAT changed from a 3GPP network to a
non-3GPP network", indicating that the cancel location is caused by the handover or switching of
the UE from the 3GPP network to the non-3GPP network.
[0235] In this step, before the cancel location message is sent to the MME, the process further
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includes that the HSS/AAA server determines whether to send the cancel location message
according to the handover/change of the UE in the access network, or according to the
handover/change of the UE in the access network and the terminal capability of the UE, or
according to the handover/change of the UE in the access network and the access policy
5 information of the operator, or according to the handover/change of the UE in the access network,
the terminal capability of the UE, and the access policy information of the operator; if yes, the
HSS/AAA server sends the cancel location message to the MME; otherwise, the HSS/AAA server
does not send the cancel location message to the MME, and the process ends. Specifically, the
determination process specifically includes the following circumstances.
10 [0236] 1) The HSS/AAA server determines whether to send the cancel location message to the
MME according to the handover/change of the UE in the access network, in which the HSS/AAA
server determines whether the UE is handed over or switched from the 3GPP network to the
non-3GPP network; if yes, the HSS/AAA server sends the cancel location message to the MME;
otherwise, the HSS/AAA server does not send the cancel location message to the MME, and the
15 process ends.
[0237] 2) The HSS/AAA server determines whether to send the cancel location message to the
MME according to the handover or switching of the UE in the access network and the terminal
capability of the UE, in which if the HSS/AAA server determines that the UE is handed over or
switched from the 3GPP network to the non-3GPP network, and the terminal capability of the UE is
20 "single radio capability", the HSS/AAA server sends the cancel location message to the MME; if
the HSS/AAA server determines that the terminal capability of the UE is "multi radio capability",
the HSS/AAA server does not send the cancel location message to the MME.
[0238] 3) The HSS/AAA server determines whether to send the cancel location message to the
MME according to the handover/change of the UE in the access network and the access policy
25 information of the operator, in which if the HSS/AAA server determines that the UE is handed over
or switched from the 3GPP network to the non-3GPP network, and the access policy information of
the operator is "single radio access", the HSS/AAA server sends the cancel location message to the
MME; if the HSS/AAA server determines that the UE is handed over or switched from the 3GPP
network to the non-3GPP network, and the access policy information of the operator is "multi radio
30 access", the HSS/AAA server does not send the cancel location message to the MME.
[0239] 4) The HSS/AAA server determines whether to send the cancel location message to the
MME according to the handover or switching of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator, in which if the HSS/AAA
server determines that the UE is handed over or switched from the 3GPP network to the non-3GPP
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network, the terminal capability of the UE is "dual radio capability", and the access policy
information of the operator is "single radio access", or if the HSS/AAA server determines that the
UE is handed over or switched from the 3GPP network to the non-3GPP network, the access policy
information of the operator is "multi radio access", and the terminal capability of the UE is "single
5 radio capability", or if the HSS/AAA server determines that the UE is handed over or switched from
the 3GPP network to the non-3GPP network, the terminal capability of the UE is "single radio
capability", and the access policy information of the operator is "single radio access", the HSS/AAA
server sends the cancel location message to the MME; if the HSS/AAA server determines that the
terminal capability of the UE is "dual radio capability" and the access policy information of the
10 operator is "multi radio access", the HSS/AAA server does not send the cancel location message to
the MME.
[0240] In step 911, after receiving the cancel location message, the MME deletes the MM
context of the UE, and returns a cancel location Ack message to the HSS/AAA server.
[0241] In step 912, if the MME finds that the subscription data and the MM context of the UE
15 are deleted, the MME sends a purge UE message to the HSS/AAA server, and then the HSS/AAA
server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0242] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0243] In step 913, the MME initiates a bearer deletion process to delete the bearer resources
20 used by the UE on the 3GPP network side (including the MME, serving GW, and PDN GW).
[0244] In this embodiment, the UE is detached after step 907, and the detailed process thereof
can be known with reference to the descriptions of the third example of the method for user
detachment.
[0245] In this embodiment, it should be noted that, the HSS and the AAA server may be
25 configured in different entities or in a same entity. When the HSS and the AAA server are
configured in different entities, the register request message sent by the PDN GW in step 908 is
forwarded to the HSS through the AAA server, the register response message sent by the HSS in
step 909 is forwarded to the PDN GW through the AAA server, the cancel location message sent to
the MME in step 910 is sent to the MME by the HSS, and the purge UE message sent by the MME
30 in step 912 is sent to the HSS. The cancel location message sent by the HSS/AAA server may not
carry the cause value.
[0246] In this embodiment, it should be noted that, the method in this embodiment is also
applicable to the handover or switching of the UE from a non-3GPP network to a 3GPP network.
[0247] In Step I, after the UE is handed over or switched from the non-3GPP network to the
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3GPP network, the MME or the PDN GW registers a new RAT Type of the UE with the HSS/AAA
server.
[0248] In Step 11, if the HSS/AAA server determines that the RAT type of the UE registered last
time is inconsistent with that of the UE registered this time, the HSS/AAA server determines
5 whether to send the cancel location message to a non-3GPP GW (to notify the non-3GPP GW to
detach the UE from the non-3GPP network) according to the handover/change of the UE in the
access network, or according to the handover/change of the UE in the access network and the
terminal capability of the UE, or according to the handover/change of the UE in the access network
and the access policy information of the operator, or according to the handover/change of the UE in
10 the access network, the terminal capability of the UE, and the access policy information of the
operator. If yes, the HSS/AAA server sends the cancel location message to the non-3GPP GW. The
detailed process thereof can be known with reference to the descriptions of the above embodiment.
[0249] FIG. 10 shows a fifth example of the method for user detachment when a
handover/change occurs in a heterogeneous network according to an embodiment of the present
15 invention. The method includes the following steps.
[0250] In step 1001, the UE accesses a 3GPP access network through the serving GW and the
PDN GW.
[0251] In step 1002, the UE triggers a handover or switching from the 3GPP network to the
non-3GPP network.
20 [0252] In step 1003, the MME sends a handover or switching request (HO Request) message to
a non-3GPP GW.
[0253] In this step, as for a WLAN system, the non-3GPP GW is an EPDG; as for a Wimax
system, the non-3GPP GW is an ASN GW; and as for a CDMA system, the non-3GPP GW is an
AGW.
25 [0254] In Step 1004, the non-3GPP GW performs a resource create procedure.
[0255] In this step, the resource create procedure includes performing the processes of user
authentication and PMIP tunnel binding.
[0256] In step 1005, the non-3GPP GW returns an HO response message to the MME.
[0257] In step 1006, the MME sends an HO command message to the UE, and commands the
30 UE to hand over or switch to an access network of the non-3GPP network.
[0258] In step 1007, the UE sends an access request message to the non-3GPP GW, and is
handed over or switched to the non-3GPP network.
[0259] In step 1008, the non-3GPP GW returns an access accept message to the UE.
[0260] Steps 1001-1008 and the process of the handover or switching of the UE from a 3GPP
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network to a non-3GPP network in the prior art implement functions similar to that of steps 201-207
in FIG. 2.
[0261] In step 1009, the non-3GPP GW returns an HO complete message to the MME.
[0262] In step 1010, the MME returns an HO complete Ack message to the non-3GPP GW.
5 [0263] Step 1010 further includes: determining, by the MME, whether to delete the MM context
of the UE (that is, to detach the UE from the 3GPP network) according to the handover/change of
the UE in the access network, or according to the handover/change of the UE in the access network
and the terminal capability of the UE, or according to the handover/change of the UE in the access
network and the access policy information of the operator, or according to the handover/change of
10 the UE in the access network, the terminal capability of the UE, and the access policy information
of the operator; if yes, the MME deletes the MM context of the UE; otherwise, the process ends.
Specifically, the determination process includes the following four circumstances.
[0264] 1) The MME determines whether to delete the MM context of the UE according to the
handover/change of the UE in the access network, in which if the MME determines that the UE is
15 handed over or switched from the 3GPP network to the non-3GPP network, the MME deletes the
MM context of the UE; otherwise, the MME does not delete the MM context of the UE.
[0265] 2) The MME determines whether to delete the MM context of the UE according to the
handover/change of the UE in the access network and the terminal capability of the UE, in which if
the MME determines that the UE is handed over or switched from the 3GPP network to the
20 non-3GPP network, and the terminal capability of the UE is "single radio capability", the MME
deletes the MM context of the UE; if the MME determines that the terminal capability of the UE is
"multi radio capability", the MME does not delete the MM context of the UE.
[0266] 3) The MME determines whether to delete the MM context of the UE according to the
handover/change of the UE in the access network and the access policy information of the operator,
25 in which if the MME determines that the UE is handed over or switched from the 3GPP network to
the non-3GPP network, and the access policy information of the operator is "single radio access",
the MME deletes the MM context of the UE; if the MME determines that the access policy
information of the operator is "multi radio access", the MME does not delete the MM context.
[0267] 4) The MME determines whether to delete the MM context of the UE according to the
30 handover/change of the UE in the access network, the terminal capability of the UE, and the access
policy information of the operator, in which if the MME determines that the UE is handed over or
switched from the 3GPP network to the non-3GPP network, the terminal capability of the UE is
"dual radio capability", and the access policy information of the operator is "single radio access", or
if the MME determines that the UE is handed over or switched from the 3GPP network to the
43
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non-3GPP network, the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability", or if the MME determines that the UE is
handed over or switched from the 3GPP network to the non-3GPP network, the terminal capability
of the UE is "single radio capability", and the access policy information of the operator is "single
5 radio access", the MME deletes the MM context of the UE; if the MME determines that the
terminal capability of the UE is "dual radio capability", and the access policy information of the
operator is "multi radio access", the MME does not delete the MM context of the UE.
[0268] In step 1011, if the MME finds that the subscription data and the MM context of the UE
are deleted, the MME sends a purge UE message to the HSS/AAA server, and then the HSS/AAA
10 server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0269] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0270] In step 1012, the MME initiates a bearer deletion process to delete the bearer resources
used by the UE on the 3GPP network side (including the MME, serving GW, and PDN GW).
15 [0271] In this embodiment, the UE is detached after Step 1007, and the detailed process thereof
can be known with reference to the descriptions of the third example of the method for user
detachment.
[0272] In this embodiment, it should be noted that, the method in this embodiment is also
applicable to the handover or switching of the UE from the non-3GPP network to the 3GPP
20 network.
[0273] In Step I, after the UE is handed over or switched from the non-3GPP network to
network, the MME returns an HO complete message to the non-3GPP GW.
[0274] In step II, the non-3GPP GW determines whether to delete the MM context of the UE
(that is, to detach the UE from the non-3GPP network) according to the handover/change of the UE
25 in the access network, or according to the handover/change of the UE in the access network and the
terminal capability of the UE, or according to the handover/change of the UE in the access network
and the access policy information of the operator, or according to the handover/change of the UE in
the access network, the terminal capability of the UE, and the access policy information of the
operator; if yes, the non-3GPP GW deletes the MM context of the UE. The detailed process thereof
30 can be known with reference to the descriptions of the above embodiment.
[0275] FIG. 11 shows a sixth example of the method for user detachment when a
handover/change occurs in a heterogeneous network according to an embodiment of the present
invention. The method includes the following steps.
[0276] Steps 1101-1102 are the same as steps 201-202 in FIG. 2.
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[0277] In step 1103, the UE sends a detach request message to the MME, and the detach request
message carries a cause value represented as "detach because of UE's accessing RAT changed from
a 3GPP network to a non-3GPP network", indicating that the detach request message is caused by
the handover/change of the UE from the 3GPP network to the non-3GPP network.
5 [0278] In this step, before the UE sends the detach request message to MME, the process
further includes determining whether to detach the UE from the 3GPP network according to the
handover of the UE in the access network, or according to the handover of the UE in the access
network and the terminal capability of the UE, or according to the handover of the UE in the access
network and the access policy information of the operator, or according to the handover of the UE
10 in the access network, the terminal capability of the UE, and the access policy information of the
operator. If yes, the UE sends the detach request message to the MME; otherwise, step 1107 is
performed. The terminal capability of the UE and the access policy information of the operator are
obtained by the network elements according to the processes of FIGs. 3 and 4. Specifically, the
determination process includes the following circumstances.
15 [0279] 1) The UE determines whether to detach the UE from the 3GPP network and whether to
send the detach request message to the MME according to the handover/change of the UE in the
access network, in which the UE determines whether the UE is handed over or switched from the
3GPP network to the non-3GPP network; if yes, the MM context and bearer resources of the 3GPP
network in the UE are deleted, and the detach request message is sent to the MME; otherwise, step
20 1107 is performed.
[0280] 2) The UE determines whether to detach the UE from the 3GPP network and whether to
send the detach request message to the MME according to the handover/change of the UE in the
access network and the terminal capability of the UE, in which if the UE determines that the UE is
handed over or switched from the 3GPP network to the non-3GPP network, and the telininal
25 capability of the UE is "single radio capability", the MM context and the bearer resources of the
3GPP network in the UE are deleted, and the detach request message is sent to the MME; if the UE
determines that the terminal capability of the UE is "multi radio capability", the MM context of the
3GPP network in the UE is not deleted (that is, the UE is not detached from the 3GPP network), the
detach request message is not sent to the MME, and step 1107 is performed.
30 [0281] 3) The UE determines whether to detach the UE from the 3GPP network and whether to
send the detach request message to the MME according to the handover/change of the UE in the
access network and the access policy information of the operator, in which if the UE determines that
the UE is handed over or switched from the 3GPP network to the non-3GPP network, and the access
policy information of the operator is "single radio access", the MM context and the bearer resources
45
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of the 3GPP network in the UE are deleted, and the detach request message is sent to the MME; if
the UE determines that the access policy information of the operator is "multi radio access", the
MM context of network in the UE is not deleted (that is, the UE is not detached from the 3GPP
network), the detach request message is not sent to the MME, and step 1107 is performed.
5 [0282] 4) The UE determines whether to detach the UE from the 3GPP network according to
the handover/change of the UE in the access network, the terminal capability of the UE, and the
access policy information of the operator, in which if the UE determines that the UE is handed over
or switched from the 3GPP network to the non-3GPP network, the terminal capability of the UE is
"dual radio capability", and the access policy information of the operator is "single radio access", or
10 if the UE determines that the UE is handed over or switched from the 3GPP network to the
non-3GPP network, the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability", or if the UE determines that the UE is
handed over or switched from the 3GPP network to the non-3GPP network, the terminal capability
of the UE is "single radio capability", and the access policy information of the operator is "single
15 radio access", the MM context and the bearer resources of the 3GPP network in the UE are deleted,
and the detach request message is sent to the MME. If the UE determines that the terminal
capability of the UE is "dual radio capability", and the access policy information of the operator is
"multi radio access", the MM context of the 3GPP network in the UE is not deleted (that is, the UE
is not detached from the 3GPP network), the detach request message is not sent to the MME, and
20 step 1107 is performed.
[0283] In step 1104, after the MME receives the detach request message, the MME deletes the
MM context of the UE in the MME, initiates a bearer deletion process, and deletes the bearer
resources used by the UE on the 3GPP network side.
[0284] In this step, the bearer resources used by the UE on the 3GPP network side include the
25 bearer resources used by the UE in the MME, serving GW, and PDN GW.
[0285] In step 1105, if the MME finds that the subscription data and the MM context of the UE
are deleted, the MME sends a purge UE message to the HSS/AAA server, and then the HSS/AAA
server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0286] In this step, it is determined whether to delete the subscription data of the UE by the
30 MME according to the actual conditions. This step is optional.
[0287] In step 1106, the MME sends a Detach Accept message to the UE.
[0288] Steps 1107-1111 are the same as steps 203-207 in FIG. 2.
[0289] Step 1103 and step 1107 may be performed at any order.
[0290] In this embodiment, it should be noted that, the method in this embodiment is also
46
NSN677-1002, Page 62
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applicable to the handover or switching of the UE from the non-3GPP network to the 3GPP
network.
[0291] When the UE is handed over from the non-3GPP network to the 3GPP network, the UE
determines whether to detach the UE from the non-3GPP network according to the handover of the
5 UE in the access network, or according to the handover of the UE in the access network and the
terminal capability of the UE, or according to the handover of the UE in the access network and the
access policy information of the operator, or according to the handover of the UE in the access
network, the terminal capability of the UE, and the access policy infatmation of the operator. If yes,
the UE sends the detach request message to the non-3GPP GW. The detailed process thereof can be
10 known with reference to the description of the above embodiment.
[0292] It should be noted that, in this embodiment, the serving GW and the PDN GW may be
configured in different entities or in the same entity. When the serving GW and the PDN GW are
configured in the same entity, the messages between the serving GW and the PDN GW are
transmitted in the same entity. The HSS and the AAA server may be configured in different entities
15 or in the same entity. If the HSS and the AAA server are configured in different entities, the MME
sends the purge UE message to the HSS.
[0293] In the embodiments of the present invention, if the user detachment is caused by the
handover/change of the UE from the 3GPP network to the non-3GPP network, after the user
detachment, the process may further include: setting, by the MME of the 3GPP, the state of the UE
20 to an invalid state. Specifically, the process of setting, by the MME of the 3GPP, the state of the UE
to an invalid state is implemented as follows.
[0294] The MME deletes the subscription date information and the MM context of the UE.
[0295] Alternatively, the MME retains the subscription data information of the UE, but sets the
state of the MME used by the UE to an invalid state.
25 [0296] Alternatively, the state of the MME used by the UE is set to an invalid value.
[0297] Alternatively, the MME retains the subscription data information of the UE, but sets a
change flag location of the MME used by the UE to a changed state.
[0298] In the embodiments of the present invention, if the user detachment is caused by the
handover or switching of the UE from the non-3GPP network to the 3GPP network, after the user
30 detachment, the process may further include: setting, by the non-3GPP GW of the non-3GPP, the
state of the UE to an invalid state. Specifically, the process of setting, by the non-3GPP GW of the
non-3GPP, the state of the UE to an invalid state is implemented as follows.
[0299] The non-3GPP GW deletes the subscription data information and the MM context of the
UE.
47
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[0300] Alternatively, the non-3GPP GW retains the subscription data information of the user,
but sets the state of the non-3GPP GW used by the UE to an invalid state.
[0301] Alternatively, the address of the non-3GPP GW used by the UE is set to an invalid value.
[0302] Alternatively, a non-3GPP GW retains the subscription data information of the user, but
5 sets a change flag position of the non-3GPP GW used by the UE to a changed state.
[0303] FIG. 12 shows a system for user detachment when a handover/change occurs in a
heterogeneous network according to an embodiment of the present invention. The system includes a
UE and a network side.
[0304] The UE is adapted to be handed over or switched from a source network on the network
10 side to a target network.
[0305] The network side is adapted to hand over or switch the UE from the source network to
the target network to detach the UE from the source network.
[0306] The UE may include a first handover/change module, and the network side may include
a second handover/change module and a second detachment module.
15 [0307] The first handover/change module is adapted to enable the UE to be handed over or
switched from the source network to the target network.
[0308] The second handover/change module is adapted to enable the network side to hand over
or switch the UE from the source network to the target network.
[0309] The second detachment module is adapted to enable the network side to detach the UE
20 from the source network.
[0310] Optionally, the UE includes a first detachment module adapted to detach the UE from
the source network.
[0311] Optionally, the UE includes a first detachment determination module and a second
detachment determination module disposed on the network side.
25 [0312] The first detachment determination module is adapted to determine whether to detach
the UE from the source network, and if yes, an enable instruction is sent to the first detachment
module to enable the first detachment module.
[0313] The second detachment determination module is adapted to determine whether to detach
the UE from the source network, and if yes, an enable instruction is sent to the second detachment
30 module to enable the second detachment module. The second detachment determination module
may be disposed in a network element on a network side, such as an MME, a PDN GW, a serving
GW, or an HSS/AAA server.
[0314] The UE further includes a module for sending terminal capability of a UE and a module
for receiving access policy information of an operator, and the network side further includes a
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NSN677-1002, Page 64
DF078307331
module for receiving the terminal capability of the UE and a module for sending the access policy
information of the operator.
[0315] The module for sending the terminal capability of the UE is adapted to send the terminal
capability of the UE to the network side, and the module for receiving the access policy information
5 of the operator is adapted to receive the access policy information of the operator sent by the
network side.
[0316] The module for receiving the terminal capability of the UE is adapted to receive the
terminal capability of the UE sent by the UE, and the module for sending the access policy
information of the operator is adapted to send the access policy information of the operator to the
10 UE.
[0317] Based on the solutions for user detachment when a handover/change occurs in a
heterogeneous network according to the embodiments of the present invention, when the UE is
handed over or switched from the source network on the network side to the target network on the
network side, the source network can detach the UE from the source network, and the UE can
15 detach the UE from the source network.
[0318] It will be apparent to those skilled in the art that various modifications and variations can
be made to the present invention without departing from the scope of the invention. In view of the
foregoing, it is intended that the present invention cover modifications and variations of this
invention provided that they fall within the scope of the following claims and their equivalents.
49
NSN677-1002, Page 65
(GERAN)\ \N/
(JTRAN SGSN
MME
HSS
PCRF
(E-UTRAN) Serving Gateway
PDN Gateway
AAA Server UE
DF078307331
Drawings
1/10
Non-3GPP IPA Access
FIG. 1
UE MME Non-3GPP GW
Serving GW
PDN GW
HSS/AAA Server
I I 201. Access a 3GPP network
1.-41
he handover switching.
UE triggers or
203. Access request o.
204. Access authentication process
205a. Proxy binding update
205b. Binding update
206a. Proxy Proxy binding Ack
206b. Binding Ack
207. Access accept
208. Delete bearer request
209. Delete bearer 1.1
response
FIG. 2
50
NSN677-1002, Page 66
PCRF HS S/AAA Server UE MME Serving
GW Network element on an access side
PDN GW
301. Attach request
302. Authentication process of the UE
303. Update location request
304. Insert subscription data
305. Update location Ack
306. Create bearer request
307. PCC rules request
308. PCC rules provision
309. Create bearer response
310a. Register
311. Attach accept 1
312. Radio bearer establishment request
313. Radio bearer establishment response
310b. Register 4 -0-
DF078307331
2/10
FIG. 3
5 1
NSN677-1002, Page 67
PDN GW
UE PDN GW
PCRF HSS/AAA
Server Non-3GPP
GW
DF078307331
3/10
UE
401. TAU/RAU request .
Serving GW
402. Update location request I I
403. Insert subscription data
404. Update location Ack
HS S/AAA Server
405. Update bearer request 00-
406a. Register
406b. Register
407. TAU/RAU accept
FIG. 4
NSN677-1002, Page 68
DF078307331
4/10
UE MME Non-3 GPP GW
Serving GW
PDN GW
HSS/AAA Server
602
601. Access a 3GPP network 0-41
The UE triggers handover or switching.
603. Access request
604. Access authentication process
605a. Proxy binding update
605b. Binding Binding update
606a. Proxy binding Ack
606b. Binding Ack
607. Access accept
608a. Delete bearer request
608b. Delete bearer request
608b. Binding revocation
Ind
609a. Delete bearer response
609b. Binding 509b. Delete bearer revocation
response Ack
610. Detach request 4 - - -
610. Detach accept 611. Purge UE
611. Purge UE Ack 4- if
FIG. 6
53
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703. Acces s request
5/10
702
FIG. 7
Non-3 GPP GW
Serving GW
PDN GW
HSS/AAA Server UE MME
701. Access a 3GPP network
The UE triggers handover or switching.
704. Acce
705a. Proxy binding update
705b. Binding update
..4706a. Proxy binding Ack
706b. Binding Ack
707. Access accept
708a. Delete bearer request
ss authentic ation process
1
708b. Delete bearer request
708b. Binding revocation Ind update
4
709a. Delete bearer response
709b. Delete bearer response
709b. Binding revocation
Ack
710. Purge UE
710. Purge UE Ack
54
NSN677-1002, Page 70
DF078307331
6/10
UE MME Nod] 3GPP
GW Serving
GW PDN GW
HS S/AAA Server
802
801. Access a 3GPP network
The UE triggers
handover or switching.
803. Access request
804. Access authentication process 1041
805a. Proxy binding update 805b. Binding update
806a. Proxy binding Ack
806b. Binding Ack 807. Access accept
808a.Detach request 1-4
808b.Detach request
808c. Binding 808c.Detach request revocation Ind
809a. Detach response
809b. Detach response
809c. Detach response 809c. Binding
revocation Ack
810. Delete bearer response
811. Purge UE
811. Purge UE Ack
FIG. 8
55
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7/10
902
FIG. 9
MME NonU 3GPP
GW Serving
GW PDN GW
HSS/AAA Server UE
901. Access a 3GPP network ►~ The UE triggers
handover or switching.
903. Access request
904. Access authentication process ►H
905a. Proxy binding update
905b. Binding update
906a. Proxy binding Ack •
906b. Binding Ack
907. Access accept 908. Register
request
909. Register response
910. Cancel location
911. Cancel location Ack
912. Purge UE
912. Purge UE Ack
913. Bearer deletion process
56
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8/10
UE MME Non 3GPP
GW Serving
GW PDN GW
HSS/AAA Server
1001. Access a 3GPP network OP .411
1002 The UE triggers handover. 1003. HO
request
1004.Resource create procedure
1006. HO command
1005. HO response
-41
1007. Access request
1008. Access accept
1009. HO complete
-41
1010. HO complete Acl(v
1011. Purge UE b
1011. Purge UE Ack
1012. Bearer deletion process
FIG 10
57
NSN677-1002, Page 73
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9/10
UE MME Non 3 GPP
GW Serving
GW PDN GW
HSS/AAA Server
1102
1101. Access a 3GPP network
The UE triggers handover or switching.
1 103. Detach request
1104. Bearer deletion process
1105. Purge UE b
1105. Purge UE Ack
1106. Detach accept -41
1107. Access request
1108. Access authentication
1109a. Proxy binding update
109b. Binding update
1110a. Proxy binding Ack
1110b. Binding Ack
1111. Access accept
FIG 11
58
NSN677-1002, Page 74
First detachment determination module
First handover/change module
First detachment module
Module for sending terminal capability of a
UE
Module for receiving access policy information
of an operator
Module for receiving the terminal capability of the
UE
Second detachment determination module
Second handover/change module
Second detachment module
Module for sending the access policy information
of the operator
Network side UE
DF078307331
10/10
FIG. 12
59
NSN677-1002, Page 75
VERIFICATION OF TRANSLATION
Jinzhe, MENG hereby solemnly affirm that I have a fluent knowledge of English and
Chinese languages and that the attached document is the true and accurate translation of
the PCT application number PCT/CN2008/071842.
Dated this day of jam., 00 1j
Signature of Translator: Jinzhe, MENG
H \/c Jtozke
NSN677-1002, Page 76
METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
FIELD OF THE TECHNOLOGY
[0001] The present invention relates to the network communication technology and more
5 particularly to a method, system, and device for user detachment when a handover or
change occurs in a heterogeneous network.
BACKGROUND
[0002] To improve the competitiveness of networks in the future, a new evolution
network is now researched for a 3rd-generation partnership project (3GPP) network. FIG. 1
10 is a schematic structural view of an evolution network system for a 3GPP network. The
system includes: an evolved UMTS terrestrial radio access network (E-UTRAN), for
implementing all functions related to the wireless feature of the evolution network; a
mobility management entity (MME), for mobility management of a control plane, including
management of a user context and a mobility state and allocation of temporary user
15 identities; a serving gateway (serving GW) entity, for acting as a user plane anchor point
between access networks of the 3GPP network for terminating the E-UTRAN; a packet data
network gateway (PDN GW) entity, for acting as a user anchor point between an access
network of the 3GPP network and an access network of a non-3GPP network, and an
interface for terminating the external PDN; a policy and charging rule function (PCRF)
20 entity, for implementing functions of policy control decision and flow-based charging
control; and a home subscriber server (HSS), for storing subscription information of users.
[0003] The UMTS terrestrial radio access network (UTRAN) or GSM/EDGE radio
access network (GERAN) implements all functions relevant to the wireless feature of the
existing UMTS/GPRS network; a serving GPRS supporting node (SGSN) implements
25 functions of route forwarding, mobility management, session management, and user
information storage in the GPRS/UMTS network.
NSN677-1002, Page 77
2
[0004] IP access networks of the non-3GPP network mainly include access networks
defined by non-3GPP network organizations, for example, wireless local area network
(WLAN), worldwide interoperability for microwave access (Wimax), and code division
multiple access (CDMA) network.
5 [0005] An authentication, authorization, and accounting server (AAA server) mainly
implements access authentication, authorization, and accounting for user equipment (UE).
[0006] It should be noted that, the schematic structural view of FIG. 1 is not the only
schematic structural view of the evolution network system for a 3GPP network. The
evolution network of a 3GPP network may have various structures.
10 [0007] One requirement on the evolution network of a 3GPP network is to realize the
handover or switching of the UE between a 3GPP network and a non-3GPP network. FIG. 2
is a flow chart of a process that the UE is handed over or switched from a 3GPP network to
a non-3GPP network in the prior art. The process includes the following steps.
[0008] In Step 201, the UE accesses the 3GPP network through a serving GW and a
15 PDN GW.
[0009] In FIG. 2, the mobility management network element (MME) and the serving GW
belong to the 3GPP network, a non-3GPP GW belongs to the non-3GPP network, and the
PDN GW and HS S/AAA server are common network elements shared by the 3GPP
network and the non-3GPP network.
20 [0010] In Step 202, the UE triggers the handover or switching from the 3GPP network to
the non-3GPP network.
[0011] In Step 203, the UE sends an Access Request message to the non-3GPP GW, and
requests to access the non-3GPP GW.
[0012] As for a WLAN system, the non-3GPP GW in this step is an evolved packet data
NSN677-1002, Page 78
3
gateway (EPDG); as for a Wimax system, the non-3GPP GW in this step is an access
service network gateway (ASN GW); and as for a CDMA system, the non-3GPP GW is an
access gateway (AGW).
[0013] In Step 204, an access authentication process is performed between the UE, the
5 non-3GPP GW, and the HSS/AAA server, and the non-3GPP GW obtains the PDN GW
address information used by the UE.
[0014] In Step 205a, the non-3GPP GW sends a proxy binding update message to the
PDN GW.
[0015] In this step, it is assumed that an interface protocol between the non-3GPP GW
10 and the PDN GW is the proxy mobile internet protocol (PMIP). If an interface protocol
between the UE and the PDN GW is the client mobile internet protocol (CMIP), Step 205a
is replaced by Step 205b, in which the UE sends a binding update message to the PDN GW.
[0016] In Step 206a, the PDN GW sends a proxy binding acknowledgement message to
the non-3GPP GW.
15 [0017] In this step, it is assumed that the interface protocol between the non-3GPP GW
and the PDN GW is the PMIP. If the interface protocol between the UE and the PDN GW is
the CMIP, Step 206a is replaced by Step 206b, in which the PDN GW sends a binding Ack
message to the UE.
[0018] In Step 207, the non-3GPP GW returns an access accept message to the UE.
20 [0019] In Step 208, the PDN GW sends a delete bearer request message to the serving
GW, and the serving GW sends the delete bearer request message to the MME.
[0020] In Step 209, the MME deletes bearer resources related to the UE, returns a delete
bearer response message to the serving GW, and the serving GW returns the delete bearer
response message to the PDN GW.
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4
[0021] The above flow is a specific example of the process that the UE is handed over or
switched from a 3GPP network to a non-3GPP network. Certainly, the handover or change
process is not limited to the above descriptions. A 3GPP network involved in the handover
or change may be GERAN, UTRAN, or EUTRAN. A non-3GPP network involved in the
5 handover or change may be WLAN, Wimax, or CDMA system.
[0022] Once the UE accesses a 3GPP network, the 3GPP network creates bearer
resources of the UE and a mobility management context of the UE. The mobility
management context of the UE exists in the MME. Furthermore, bearer resources of a
3GPP network and a mobility management context of a 3GPP network are also created in
10 the UE. Therefore, when the UE is handed over or switched from a 3GPP network to a
non-3GPP network, user detachment needs to be performed to save network resources. The
user detachment includes detachment of the 3GPP network and detachment of the UE. The
detachment of the 3GPP network indicates that the 3GPP network deletes the bearer
resources of the UE and the mobility management context of the UE, and the detachment of
15 the UE indicates that the UE deletes the bearer resources of the 3GPP network and the
mobility management context of the 3GPP network. Here, the mobility management
context of the UE exists in the MME.
[0023] However, in the process shown in FIG. 2, when the UE is handed over or
switched from a 3GPP network to a non-3GPP network, the 3GPP network merely deletes
20 the bearer resources of the UE, but does not delete the mobility management context of the
UE, and meanwhile, the UE does not delete the bearer resources and mobility management
context of the 3GPP network as well.
[0024] As known from the above that, the prior art neither provides a method for 3GPP
network detachment when the UE is handed over or switched from a 3GPP network to a
25 non-3GPP network, nor provides a specific method for user detachment of the UE when the
UE is handed over or switched from a 3GPP network to a non-3GPP network. That is to say,
no specific solution for user detachment when handover or change occurs in a
NSN677-1002, Page 80
5
heterogeneous network is provided in the prior art.
[0025] In addition, if the UE has a single radio capability, that is, the UE can access only
one network, after the UE is handed over or switched from a 3GPP network to a non-3GPP
network, user detachment needs to be performed, that is, the 3GPP network needs to detach
5 the UE, and the UE needs to be detached from the 3GPP network. The detaching, by the
3GPP network, the UE includes that the 3GPP network deletes the bearer resources of the
UE on the 3GPP network side, and the mobility management context of the UE in the
MME. The detaching, by the UE, from the 3GPP network includes that the UE deletes the
bearer resources and mobility management context created when the UE accesses the 3GPP
10 network.
[0026] If the UE has a dual radio capability, that is, the UE can access two networks at
the same time, after the UE is handed over or switched from a 3GPP network to a
non-3GPP network, it is judged whether the 3GPP network needs to detach the UE
according to, for example, information of operator policies. In other words, the prior art
15 does not provide a solution for determining whether to perform the user detachment when
the UE is handed over or switched from a 3GPP network to a non-3GPP network.
[0027] To sum up, during researches and applications, the inventor(s) of the present
invention finds that the prior art has at least the following problems: the prior art neither
provides a specific solution for user detachment when a handover or change occurs in a
20 heterogeneous network, nor provides a solution for judging whether to perform user
detachment when handover or change occurs in a heterogeneous network.
SUMMARY
[0028] An embodiment of the present invention provides a method for detaching a user
when a handover or change occurs in a heterogeneous network.
25 [0029] An embodiment of the present invention further provides another method for
detaching a user when a handover or change occurs in a heterogeneous network.
NSN677-1002, Page 81
6
[0030] An embodiment of the present invention provides a system for detaching a user
when a handover or change occurs in a heterogeneous network.
[0031] An embodiment of the present invention provides a device for detaching a user
when a handover or change occurs in a heterogeneous network.
5 [0032] An embodiment of the present invention further provides a device for detaching a
user when a handover or change occurs in a heterogeneous network.
[0033] A method for detaching a user when handover or change occurs in a
heterogeneous network includes the following steps.
[0034] First, a UE is handed over or switched from a source network to a target network.
10 [0035] Next, a network element on a network side determines whether to detach the UE
from the source network; if yes, the UE is detached from the source network.
[0036] Another method for user detachment when a handover or change occurs in a
heterogeneous network includes the following steps.
[0037] First, a UE triggers handover or switching from a source network to a target
15 network.
[0038] Next, the UE determines whether to be detached from the source network; if yes,
the UE is detached from the source network.
[0039] A system for user detachment when a handover or change occurs in a
heterogeneous network includes a UE and a network side.
20 [0040] The UE is adapted to be handed over or switched from a source network on the
network side to a target network on the network side.
[0041] The network side is adapted to hand over or switch the UE from the source
network to the target network, and detach the UE from the source network.
NSN677-1002, Page 82
7
[0042] A device for detaching a user when a handover or change occurs in a
heterogeneous network includes a second handover or change module and a second
detachment module on a network side.
[0043] The second handover or switching module is adapted to hand over or switch a UE
5 from a source network on the network side to a target network on the network side.
[0044] The second detachment module is adapted to detach the UE from the source
network.
[0045] A device for detaching a user when a handover or change occurs in a
heterogeneous network includes a first handover or change module and a first detachment
10 module in a UE.
[0046] The first handover or change module is adapted to hand over or switch the UE
from a source network to a target network;
[0047] The first detachment module is adapted to detach the UE from the source
network.
15 [0048] As known from the above solutions that, in the embodiments of the present
invention, when a handover or change occurs in the heterogeneous network, the UE is
detached from the source network after being determined by the source network or the UE
is detached from the source network after being determined by the UE. Thus, detachment of
the user is realized by the source network or the UE, when the handover or change occurs in
20 the heterogeneous network.
BRIEF DESCRIPTION OF THE DRAWINGS
[0049] FIG. 1 is a schematic structural view of an evolution network system for a 3GPP
network in the prior art;
[0050] FIG. 2 is a flow chart of a process that the UE is handed over or switched from a
NSN677-1002, Page 83
8
3GPP network to a non-3GPP network in the prior art;
[0051] FIG. 3 is a flow chart of a process that a network element in a 3GPP network
acquires terminal capability of UE and access policy information of an operator when the
UE accesses the 3GPP network according to an embodiment of the present invention;
5 [0052] FIG. 4 is a flow chart of a process that a network element in a 3GPP network
acquires terminal capability of UE and access policy information of an operator when a
location area or terminal capability of the UE changes according to an embodiment of the
present invention;
[0053] FIG. 5 is a flow chart of a process that a network element in a non-3GPP network
10 acquires terminal capability of UE and access policy information of an operator when the
UE accesses the non-3GPP network according to an embodiment of the present invention;
[0054] FIG. 6 shows a first example of a method for user detachment when a handover
or change occurs in a heterogeneous network according to an embodiment of the present
invention;
15 [0055] FIG. 7 shows a second example of the method for user detachment when a
handover or change occurs in a heterogeneous network according to an embodiment of the
present invention;
[0056] FIG. 8 shows a third example of the method for user detachment when a handover
or change occurs in a heterogeneous network according to an embodiment of the present
20 invention;
[0057] FIG. 9 shows a fourth example of the method for user detachment when a
handover or change occurs in a heterogeneous network according to an embodiment of the
present invention;
[0058] FIG. 10 shows a fifth example of the method for user detachment when a
25 handover or change occurs in a heterogeneous network according to an embodiment of the
NSN677-1002, Page 84
9
present invention;
[0059] FIG. 11 shows a sixth example of the method for user detachment when a
handover or change occurs in a heterogeneous network according to an embodiment of the
present invention; and
5 [0060] FIG. 12 is a schematic structural view of a system for user detachment when a
handover or change occurs in a heterogeneous network according to an embodiment of the
present invention.
DETAILED DESCRIPTION
[0061] To make the objectives, technical solutions, and beneficial effects of the present
10 invention more comprehensible, the present invention is described in detail below with
reference to the accompanying drawings and embodiments.
[0062] FIGs. 6-10 respectively show the first to fifth examples of a method for user
detachment when a handover or change occurs in a heterogeneous network according to an
embodiment of the present invention. The main ideas of the examples are described as
15 follows:
[0063] The UE is handed over or switched from a source network to a target network; the
source network determines whether to detach the UE from the source network; if yes, the
UE will be detached from the source network; otherwise, the UE will not be detached from
the source network.
20 [0064] FIG. 11 shows a sixth example of a method for user detachment when a handover
or change occurs in a heterogeneous network according to an embodiment of the present
invention. The main idea of this example is described as follows.
[0065] The UE triggers a handover or switching from a source network to a target
network; the UE determines whether to be detached from the source network; if yes, the UE
25 will be detached from the source network; otherwise, the UE will not be detached from the
NSN677-1002, Page 85
10
source network.
[0066] The two networks involved in the handover or change in the heterogeneous
network according to the embodiments of the present invention may be one of the 3GPP
networks (such as a GERAN network, a UTRAN network, or an EUTRAN network) and
5 one of the non-3GPP networks (such as a WLAN network, Wimax network, or CDMA
network). Specifically, the embodiments include the handover or switching of the UE from
a 3GPP network to a non-3GPP network or the handover or switching of the UE from a
non-3GPP network to a 3GPP network. Here, the network where the UE originally exists
during the handover or change process is referred to as the source network, and the other
10 network involved in the handover or change process is referred as the target network.
[0067] Then, the handover or switching from a 3GPP network to a non-3GPP network is
taken as an example to illustrate the first embodiment to the sixth embodiment of the
method for UE detachment when a handover or change occurs in the heterogeneous
network of the present invention.
15 [0068] The UE and the network element in the 3GPP network acquire the terminal
capability of the UE, and the network element obtains access policy information of the
operator, which are provided for being used in the solution for UE detachment when the UE
is handed over or switched from the 3GPP network to the non-3GPP network according to
the embodiments of the present invention. Here, FIGs. 3 and 4 are used to illustrate the
20 process that the network element in a 3GPP network acquires the terminal capability of the
UE and the access policy information of the operator according to the embodiments of the
present invention. FIG. 3 is a flow chart of a process that a network element in a 3GPP
network acquires terminal capability of UE and access policy information of an operator
when the UE accesses the 3GPP network. FIG. 4 is a flow chart of a process that a network
25 element in a 3GPP network acquires terminal capability of UE and access policy
information of an operator when a location area or terminal capability of the UE changes
after the UE accesses the 3GPP network according to an embodiment of the present
NSN677-1002, Page 86
11
invention.
[0069] Referring to FIG. 3, the process that the network element in the 3GPP network
acquires the terminal capability of the UE and the access policy information of the operator
when the UE accesses the 3GPP network includes the following steps.
5 [0070] In step 301, the UE sends an attach request message carrying terminal capability
of the UE to the MME.
[0071] In this step, if the access network of the UE is GERAN/UTRAN, the SGSN
serves as the MME; if the access network of the UE is EUTRAN, the MME serves as the
MME.
10 [0072] In this step, the terminal capability of the UE is represented by information
element (IE) of the radio capability supported by the UE. The radio capability supported by
the UE is a single radio capability (which indicates that the UE can access only one network
at a certain time point) or a dual radio capability (which indicates that the UE can access
two or more networks at a certain time point). An exemplary structure of the IE carrying the
15 radio capability supported by the UE is listed as follows. The IE includes a radio capability
parameter supported by the UE. The parameter may be: 1) the UE has a single radio
capability; 2) the UE has a dual radio capability.
<UE Network Capability value part> ::=
UE Support Radio Capability
NSN677-1002, Page 87
12
UE Support Radio Capability
0 Single Radio Capability
1 Dual Radio Capability
[0073] In step 302, the UE, the MME, and the HSS/AAA server implement an
authentication process of the UE to authenticate the UE.
[0074] In step 303, if the MME finds that the UE is in an invalid state, the MME sends
5 an update location message to the HSS/AAA server, and registers the UE with the
HS S/AAA server. The update location message carries the terminal capability of the UE.
[0075] In this step, if the access policy information of the operator is configured in the
MME, the update location request may carry the access policy information of the operator.
The access policy information of the operator includes: 1) a single radio access, that is, the
10 UE can access only one access network at a certain time point; and 2) a dual radio access,
that is, the UE can access a plurality of access networks at a certain time point.
[0076] In step 304, the HSS/AAA server inserts subscription data of a user into the
MME.
[0077] In this step, if the access policy information of the operator is configured or
15 subscribed in the HSS/AAA server, the HSS/AAA server carries the access policy
information of the operator in the subscription data, and sends the subscription data to the
MME.
[0078] In step 305, the HSS/AAA server returns an update location Ack message to the
MME.
20 [0079] In Step 306, the MME sends a create bearer request message to the serving GW,
NSN677-1002, Page 88
13
and the serving GW sends the create bearer request message to the PDN GW.
[0080] In this step, the MME initiates a default bearer establishment process, so as to
create a default bearer of the UE in the MME, serving GW, and PDN GW. The create
bearer request message further carries a bearer type IE. The MME uses the bearer type IE to
5 notify the created bearer type to the serving GW and the PDN GW. If the MME sets the
bearer type IE to default bearer, the serving GW and the PDN GW are notified that the
created bearer is a default bearer.
[0081] In this step, the terminal capability of the UE and the access policy information of
the operator are carried in the create bearer request message and sent to the serving GW and
10 the PDN GW.
[0082] Steps 307 and 308 are performed only when the policy and charging rules used by
the default bearer need to be obtained from the PCRF, and the access policy information of
the operator is configured in the PCRF.
[0083] In step 307, the PDN GW sends a PCC rules request message to the PCRF to
15 obtain the policy and charging rules used by the default bearer.
[0084] In step 308, the PCRF returns a PCC rules provision message to the PDN GW,
and the PCC rules provision message carries the access policy information of the operator.
[0085] In step 309, the PDN GW and the serving GW create a bearer context, and sets
the created bearer as the default bearer; the PDN GW returns a create bearer response
20 message to the serving GW, and the serving GW returns the create bearer response message
to the MME.
[0086] If the access policy information of the operator is configured in the PCRF entity,
or the access policy information of the operator is configured in the PDN GW, or the access
policy information of the operator is configured in the serving GW, this step includes the
25 following: the create bearer response message carries the access policy information of the
NSN677-1002, Page 89
14
operator configured by the PCRF, the PDN GW, or the serving GW.
[0087] In this step, the bearer context created by the PDN GW and the serving GW
includes bearer type information, which has two values: default bearer and dedicated bearer.
For the default bearer, the PDN GW and the serving GW set the bearer type information in
5 the bearer context to default bearer. The PDN GW and the serving GW may know that the
created bearer is a default bearer in the following two manners.
[0088] 1) In step 306, the MME carries the bearer type IE in the create bearer request
message, and notifies the bearer type to the serving GW and the PDN GW through the
bearer type IE. If the carried bearer type IE set by the MME is in the value of default bearer,
10 the created bearer is the default bearer.
[0089] 2) The serving GW and the PDN GW determine whether the created bearer is the
first bearer created in the packet data network (PDN); if yes, the serving GW and the PDN
GW determine that the created bearer is a default bearer.
[0090] Other bearers are dedicated bearers. In this case, the serving GW and the PDN
15 GW set the bearer type information in the bearer context to dedicated bearer.
[0091] Step 310a is performed only when the access network type (RAT type)
information in the 3GPP network has been registered with the HS S/AAA server by the
MME.
[0092] In step 310a, the MME registers access situations of the UE in the 3GPP network
20 (for example, the RAT type used by the UE) with the HSS/AAA server.
[0093] Step 310b is performed only when the RAT type information of the UE in the
3GPP network has been registered with the HSS/AAA server by the PDN GW.
[0094] In step 310b, the PDN GW registers the access situations of the UE in the 3GPP
network (for example, the RAT type used by the UE) with the HSS/AAA server.
NSN677-1002, Page 90
15
[0095] Through this step, the HSS/AAA server obtains the access network situations of
the UE. For example, in this embodiment, the HSS/AAA server knows that the RAT type of
the UE is a 3GPP network type, or a specific network type in a 3GPP network.
[0096] The RAT type of the UE includes the following two situations.
5 [0097] 1) The RAT type of the UE is categorized into a 3GPP network and a non-3GPP
network.
[0098] 2) The RAT type of the UE is a specific network type used by the UE, for
example, GERAN network, UTRAN network, EUTRAN network, WLAN network,
Wimax network, CDMA network, etc.
10 [0099] In Step 311, the MME returns an Attach Accept message to a network element on
an access side, and the Attach Accept message carries information of the radio bearer to be
established by the UE.
[0100] As for the EUTRAN access network, the network element on the access side is
ENodeB; as for the UTRAN access network, the network element on the access side is
15 RNC; as for the GERAN access network, the network element on the access side is BSS.
The MME may carry the access policy information of the operator in the Attach Accept
message.
[0101] In step 312, the network element on the access side sends a bearer establishment
request message to the UE, and requests the UE to establish a radio bearer. The message
20 carries the access policy information of the operator sent by the MME.
[0102] The access policy information of the operator may also be notified to the UE in a
broadcast message of a cell.
[0103] In step 313, the UE establishes the bearer context, sets the created bearer to a
default bearer, and returns a radio bearer establishment response message to the network
NSN677-1002, Page 91
16
element on the access side.
[0104] The UE adds bearer type information to the established bearer context, and the
bear type has the following two values: default bearer and dedicated bearer. For the default
bearer, the UE sets the bearer type information in the bearer context to default bearer. The
5 bearer type added to the established bearer context by the UE may be acquired through the
following manners.
[0105] 1) In step 311, the MME carries a bearer type IE in the Attach Accept message,
and notifies the bearer type to the UE by the network element on the access side through the
bearer type IE. For the default bearer, the value of the bearer type IE carried by the MME is
10 Default Bearer.
[0106] 2) The UE determines whether the created bearer is the first bearer created in the
PDN; if yes, the UE determines that the created bearer is a default bearer.
[0107] Other bearers are dedicated bearers. In this case, the UE sets the bearer type
information in the bearer context to dedicated bearer.
15 [0108] In this embodiment, it should be noted that, the HSS and the AAA server may be
configured in different entities or in a same entity. If the HS S and the AAA server are
configured in different entities, the register message sent by the PDN GW in step 310a is
forwarded to the HSS by the AAA server, and the register message sent by the MME in step
310b is forwarded to the AAA server by the HSS.
20 [0109] FIG. 4 is a flow chart of a process that a network element in a 3GPP network
acquires terminal capability of UE and access policy information of an operator when a
location area or terminal capability of the UE changes. The process includes the following
steps.
[0110] In step 401, the UE sends a tracking area update or routing area update request
25 (TAU/RAU request) message carrying changed terminal capability of the UE to the MME.
NSN677-1002, Page 92
17
101111 If the access network of the UE is GERAN/UTRAN, the message sent by the UE
is the RAU request message; if the access network of the UE is EUTRAN, the message sent
by the UE is the TAU request message.
[0112] The terminal capability of the UE is represented by lEs of the radio capability
5 supported by the UE. The radio capability supported by the UE is a single radio capability
(which indicates that the UE can access only one network at a certain time point) or a dual
radio capability (which indicates that the UE can access two or more networks at a certain
time point). An exemplary structure of the IE carrying the radio capability supported by the
UE is listed as follows. The IE includes a radio capability parameter supported by the UE.
10 The parameter may be: 1) the UE has a single radio capability; 2) the UE has a dual radio
capability.
<UE Network Capability value part> ::=
UE Support Radio Capability
UE Support Radio Capability 0 Single Radio Capability 1 Dual Radio Capability
[0113] In step 402, the MME sends an update location message to the HSS/AAA server,
15 and registers the UE with the HSS/AAA server, in which the update location message
carries the changed terminal capability of the UE.
[0114] In this step, if the access policy information of the operator is configured in the
MME, the update location request message carries the access policy information of the
operator. The access policy information of the operator includes: 1) a single radio access,
20 that is, the UE can access only one access network at a certain time point; and 2) a dual
radio access, that is, the UE can access a plurality of access networks at a certain time point.
NSN677-1002, Page 93
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[0115] In step 403, the HSS/AAA server inserts subscription data of a user into the
MME.
[0116] In this step, if the access policy information of the operator is configured or
subscribed in the HSS/AAA server, the HSS/AAA server delivers the changed access
5 policy information of the operator to the MME.
[0117] In Step 404, the HSS/AAA server returns an update location Ack message to the
MME.
[0118] In Step 405, when the MME determines that the access policy information of the
operator and the terminal capability of the UE has changed, the MME sends an update
10 bearer request message to the serving GW, and the serving GW sends the update bearer
request message to the PDN GW, in which the update bearer request message carries the
changed access policy information of the operator and the changed terminal capability of
the UE.
[0119] In this step, the changed access policy information of the operator and the
15 changed terminal capability of the UE are notified to the serving GW and the PDN GW.
[0120] Step 406a is performed only when the RAT type information in the 3GPP
network has been registered with the HSS/AAA server by the MME and the information
has changed.
[0121] In Step 406a, the MME registers the access situations of the UE in the 3GPP
20 network (for example, the RAT type used by the UE) with the HSS/AAA server.
[0122] Step 406b is performed only when the RAT type information in the 3GPP
network has been registered with the HSS/AAA server by the PDN GW and the
information has changed.
[0123] In step 406b, if the RAT type information in the 3GPP network has been
NSN677-1002, Page 94
19
registered with the HS S/AAA server by the PDN GW and the information has changed, the
PDN GW registers the access situations of the UE in the 3GPP network (for example, the
RAT type used by the UE) with the HSS/AAA server.
[0124] In step 407, the MME returns a TAU/RAU accept message to the UE, and the
5 MME may deliver the changed access policy information of the operator to the UE in the
TAU/RAU accept message.
[0125] The changed access policy information of the operator may also be notified to the
UE in a broadcast message of the cell.
[0126] FIG. 4 shows the process that the network element in a 3GPP network acquires
10 the changed terminal capability of the UE and the changed access policy information of the
operator when the terminal capability of the UE and the access policy information of the
operator both have changed. The process that the network element in the 3GPP network
acquires the changed terminal capability of the UE or the changed access policy information
of the operator when the terminal capability of the UE or the access policy information of
15 the operator has changed is similar to the process of FIG. 4, which thus is not described in
detail here.
[0127] The UE and the network element in a non-3GPP network acquire the terminal
capability of the UE, and the network element acquires the access policy information of the
operator, which are provided for being used in the solution for UE detachment when the UE
20 is handed over or switched from the non-3GPP network to a 3GPP network according to the
embodiments of the present invention. FIG. 5 is used to illustrate the process that the
network element in a non-3GPP network acquires the terminal capability of the UE and the
access policy information of the operator according to the embodiments of the present
invention. FIG. 5 is a flow chart of a process that a network element in a non-3GPP network
25 acquires terminal capability of UE and access policy information of an operator when the
UE accesses the non-3GPP network.
NSN677-1002, Page 95
20
[0128] Referring to FIG. 5, the process that the network element in the non-3GPP
network acquires the terminal capability of the UE and the access policy information of the
operator when the UE accesses the non-3GPP network includes the following steps.
[0129] In step 501, the UE sends an access request message carrying the terminal
5 capability of the UE to a non-3GPP GW.
[0130] In this step, if the non-3GPP network is a WLAN network, the non-3GPP GW is
an EPDG; if the non-3GPP network is a Wimax network, the non-3GPP GW is an ASN
GW; and if the non-3GPP network is a CDMA network, the non-3GPP GW is an AGW.
[0131] In this step, the terminal capability of the UE is represented by IEs of the radio
10 capability supported by the UE. The radio capability supported by the UE is a single radio
capability (which indicates that the UE can access only one network at a certain time point)
or a dual radio capability (which indicates that the UE can access two or more networks at a
certain time point). An exemplary structure of the IE carrying the radio capability supported
by the UE is listed as follows. The IE includes a radio capability parameter supported by the
15 UE. The parameter may be: 1) the UE has a single radio capability; 2) the UE has a dual
radio capability.
<UE Network Capability value part> ::=
UE Support Radio Capability
UE Support Radio Capability 0 Single Radio Capability 1 Dual Radio Capability
[0132] In step 502, an authentication process is performed between the UE, the
non-3GPP GW, and the HSS/AAA server.
20 [0133] In this step, if the access policy information of the operator is configured in the
NSN677-1002, Page 96
21
non-3GPP GW, an access authentication message may carry the access policy information
of the operator to the HSS/AAA server. The access policy information of the operator
includes: 1) a single radio access, that is, the UE can access only one access network at a
certain time point; and 2) a dual radio access, that is, the UE can access a plurality of access
5 networks at a certain time point. In this step, if the access policy information of the operator
is configured in the HSS/AAA server, the access authentication message may carry the
access policy information of the operator to the non-3GPP GW.
[0134] In step 503a, the non-3GPP GW sends a proxy binding update message to the
PDN GW.
10 [0135] In this step, it is assumed that an interface protocol between the non-3GPP GW
and the PDN GW is the proxy mobile internet protocol (PMIP). If an interface protocol
between the UE and the PDN GW is the client mobile internet protocol (CMIP), step 503a
is replaced by step 503b, in which the UE sends a binding update message to the PDN GW.
[0136] In this step, the terminal capability of the UE and the access policy information of
15 the operator may be carried in the proxy binding update message or the binding update
message and sent to the PDN GW.
[0137] In step 504, if the policy and charging rules used by the UE need to be obtained
from the PCRF, the PDN GW sends a PCC rules request message to the PCRF to obtain the
policy and charging rules used by the UE.
20 [0138] In step 505, the PCRF provides a PCC rules provision message of the policy and
charging rules used by the UE to the PDN GW. If the access policy information of the
operator is configured in the PCRF, the PCRF transmits the access policy information of
the operator to the PDN GW via the PCC rules provision message.
[0139] In step 506, if the policy and charging rules used by the UE need to be obtained
25 from the PCRF, the non-3GPP GW sends a PCC rules request message to the PCRF to
obtain the policy and charging rules used by the UE.
NSN677-1002, Page 97
22
[0140] In step 507, the PCRF provides a PCC rules provision message of the policy and
charging rules used by the UE to the non-3GPP GW. If the access policy information of the
operator is configured in the PCRF, the PCRF transmits the access policy information of
the operator to the non-3GPP GW via the PCC rules provision message.
5 [0141] In step 508a, the PDN GW sends a proxy binding Ack message to the non-3GPP
GW.
[0142] In this step, it is assumed that the interface protocol between the non-3GPP GW
and the PDN GW is the PMIP. If the interface protocol between the UE and the PDN GW is
the CMIP, step 508a is replaced by step 508b, in which the PDN GW sends a binding Ack
10 message to the UE.
[0143] In step 509, if the RAT type information in the non-3GPP network is registered
with the HSS/AAA server by the PDN GW, the PDN GW registers the access situations of
the UE in the non-3GPP network (for example, the RAT type used by the UE) with the
HS S/AAA server.
15 [0144] In step 510, if the RAT type information in the non-3GPP network is registered
with the HSS/AAA server by the non-3GPP GW, the non-3GPP GW registers the access
situations of the UE in the non-3GPP network (for example, the RAT type used by the UE)
with the HSS/AAA server.
[0145] Through step 509 or step 510, the HSS/AAA server obtains the access network
20 situations of the UE. For example, in this embodiment, the HS S/AAA server knows that the
RAT type of the UE is a non-3GPP network type, or a specific network type in the
non-3GPP network. This step is optional.
[0146] The RAT type used by the UE may be processed through the following two
manners.
25 [0147] 1) The RAT type used by the UE is categorized into a 3GPP network and a
NSN677-1002, Page 98
23
non-3GPP network.
[0148] 2) The RAT type used by the UE is a specific network type used by the UE, for
example, a GERAN network, a UTRAN network, an EUTRAN network, a WLAN network,
Wimax network, or a CDMA network.
5 [0149] In step 511, the non-3GPP GW returns an access accept message to the UE. The
non-3GPP GW may carry the access policy information of the operator in the access accept
message.
[0150] In this embodiment, it should be noted that, the HSS and the AAA server may be
configured in different entities or in the same entity. If the HSS and the AAA server are
10 configured in different entities, the register message sent by the PDN GW in step 509 is
forwarded to the HSS by the AAA server, and the register message sent by the non-3GPP
GW in Step 510 is forwarded to the AAA server by the HSS.
[0151] FIG. 6 shows a first example of a method for detaching a user when a handover or
change occurs in a heterogeneous network according to an embodiment of the present
15 invention. The method includes the following steps.
[0152] Steps 601-607 are the same as steps 201-207 in FIG. 2.
[0153] In step 608a, the PDN GW sends a delete bearer request message to the serving
GW, and then the serving GW sends the received delete bearer request message to the
MME, and adds a cause IE in the delete bearer request message to indicate the reason of the
20 deletion, and the MME deletes the bearer resources.
[0154] In this step, as for the bearer deletion caused by the handover or switching of the
UE from the 3GPP network to the non-3GPP network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP network to a non-3GPP network". As for the
bearer deletion that is not caused by the handover or change, the PDN GW sets the cause IE
25 to other values. Alternatively, the delete bearer request message sent by the PDN GW does
NSN677-1002, Page 99
24
not carry the cause IE, and in this case, once the MME receives the delete bearer request
message sent by the serving GW, the message is defaulted to be caused by the handover or
switching of the UE from the 3GPP network to the non-3GPP network. In this embodiment,
the message carrying the cause IE is taken as an example.
5 [0155] In this step, it is assumed that an interface protocol between the PDN GW and the
serving GW is GPRS tunneling protocol (GTP). If the interface protocol between the PDN
GW and the serving GW is the PMIP, step 608a is replaced by step 608b, in which the PDN
GW sends a binding revocation indication message to the serving GW; the cause IE is
added to the binding revocation indication message; the serving GW sends the delete bearer
10 request message carrying the cause IE sent by the PDN GW to the MME; and the MME
deletes the bearer resources after receiving the delete bearer request message.
[0156] As for the binding revocation indication caused by the handover or switching of
the UE from the 3GPP network to the non-3GPP network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP network to a non-3GPP network". As for the
15 bearer deletion that is not caused by the handover or change, the PDN GW sets the cause IE
to other values. Alternatively, the binding revocation indication message sent by the PDN
GW does not carry the cause IE, and in this case, once the MME receives the delete bearer
request message sent by the serving GW, the message is default to be caused by the
handover or switching of the UE from the 3GPP network to the non-3GPP network. In this
20 embodiment, the message carrying the cause IE is taken as an example.
[0157] Step 608a or step 608b further includes the following: the MME deletes the
bearer resources after receiving the delete bearer request message. If the MME finds that all
bearer resources of the UE are deleted, the MME further determines whether to delete an
MM context (i.e., detaching the UE from the 3GPP network) and whether to send a detach
25 request message to the UE. Specifically, the process includes the following circumstances.
[0158] 1) The MME makes the following determination according to the cause IE carried
in the delete bearer request. The MME determines whether the cause IE carried in the
NSN677-1002, Page 100
25
received delete bearer request message is represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network"; if yes, the MME deletes the MM context of
the UE, and does not send the detach request message to the UE; otherwise, the MME sends
the detach request message to the UE and notifies the UE to delete the MM context and the
5 bearer resources of the 3GPP network in the UE.
[0159] 2) The MME makes the following determination according to the IE carried in the
delete bearer request and the terminal capability of the UE. If the MME determines that the
IE carried in the received delete bearer request message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-3GPP network", and the MME knows that the
10 terminal capability of the UE is "single radio capability", the MME deletes the MM context
of the UE, and does not send the detach request message to the UE; as for the bearer
deletion caused by other reasons, the MME deletes the MM context of the UE, and sends
the detach request message to the UE. If the MME knows that the terminal capability of the
UE is "multi radio capability", the MME does not delete the MM context of the UE (that is,
15 does not detach the UE from the 3GPP network).
[0160] 3) The MME makes the following determination according to the IE carried in the
delete bearer request and the access policy information of the operator. If the MME
determines that the IE carried in the received delete bearer request message is represented
as "UE's accessing RAT changed from a 3GPP network to a non-3GPP network", and the
20 MME knows that the access policy information of the operator is "single radio access", the
MME deletes the MM context of the UE, and does not send the detach request message to
the UE; as for the bearer deletion caused by other reasons, the MME deletes the MM
context of the UE, and sends the detach request message to the UE. If the MME knows that
the access policy information of the operator is "multi radio access", the MME does not
25 delete the MM context of the UE (that is, does not detach the UE from the 3GPP network).
[0161] 4) The MME makes the following determination according to the IE carried in the
delete bearer request, the terminal capability of the UE, and the access policy information of
NSN677-1002, Page 101
26
the operator. If the MME determines that the IE carried in the received delete bearer request
message is represented as "UE's accessing RAT changed from a 3GPP network to a
non-3GPP network", the terminal capability of the UE is "dual radio capability", and the
access policy information of the operator is "single radio access", or if the MME determines
5 that the IE carried in the received delete bearer request message is represented as "UE's
accessing RAT changed from a 3GPP network to a non-3GPP network", the access policy
information of the operator is "multi radio access", and the terminal capability of the UE is
"single radio capability", or if the MME determines that the IE carried in the received delete
bearer request message is represented as "UE's accessing RAT changed from a 3GPP
10 network to a non-3GPP network", the terminal capability of the UE is "single radio
capability", and the access policy information of the operator is "single radio access", the
MME deletes the MM context of the UE, and does not send the detach request message to
the UE; as for the bearer deletion caused by other reasons, the MME deletes the MM
context of the UE, and sends the detach request message to the UE. If the MME knows that
15 the terminal capability of the UE is "dual radio capability" and the access policy
information of the operator is "multi radio access", the MME does not delete the MM
context of the UE (that is, does not detach the UE from the 3GPP network).
[0162] In step 609a, the MME returns a delete bearer response message to the serving
GW, and the serving GW returns the delete bearer response message to the PDN GW.
20 [0163] In this step, the interface protocol between the PDN GW and the serving GW is
the GIP, and if the interface protocol between the PDN GW and the serving GW is the
PMIP, Step 609a is replaced by step 609b, in which the MME returns the delete bearer
response message to the serving GW, and the serving GW returns a binding revocation Ack
message to the PDN GW.
25 [0164] In step 610, if the MME sends the detach request message to the UE, the UE
deletes the MM context and the bearer resources after receiving the detach request message,
and returns a Detach Accept message to the MME.
NSN677-1002, Page 102
27
[0165] In step 611, if the MME finds that the subscription data and the MM context of
the UE are deleted, the MME sends a purge UE message to the HSS/AAA server, and the
HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to the
MME.
5 [0166] In this step, it is determined whether to delete the subscription data of the UE by
the MME according to the actual conditions. This step is optional.
[0167] In the above embodiment, after step 607, it is determined whether to detach the
UE from the 3GPP network. Specifically, the determination process is described as follows:
according to the handover or change in the access network, or according to the handover or
10 change of the UE in the access network and the terminal capability of the UE, or according
to the handover or change of the UE in the access network and the access policy
information of the operator, or according to the handover or change of the UE in the access
network, the terminal capability of the UE, and the access policy information of the
operator, it is determined whether to detach the UE from the 3GPP network, which
15 particularly includes the following four circumstances.
[0168] 1) It is determined whether the UE is handed over or switched from the 3GPP
network to the non-3GPP network; if yes, the MM context and bearer resources used by the
UE in the 3GPP network are deleted.
[0169] 2) It is determined whether the UE is handed over or switched from the 3GPP
20 network to the non-3GPP network and whether the terminal capability of the UE is "single
radio capability"; if yes, the bearer resources and the MM context used by the UE in the
3GPP network are deleted.
[0170] 3) It is determined whether the UE is handed over or switched from the 3GPP
network to the non-3GPP network and whether the access policy information of the
25 operator is "single radio access"; if yes, the bearer resources and the MM context used by
the UE in the 3GPP network are deleted.
NSN677-1002, Page 103
28
[0171] 4) It is determined whether the handover or change of the UE in the access
network, the terminal capability of the UE, and the access policy information of the
operator satisfy one of the following three conditions: 1. the UE is handed over or switched
from the 3GPP network to the non-3GPP network, the terminal capability of the UE is
5 "dual radio capability", and the access policy information of the operator is "single radio
access"; 2. the UE is handed over or switched from the 3GPP network to the non-3GPP
network, the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability"; and 3. the UE is handed over or
switched from the 3GPP network to the non-3GPP network, the terminal capability of the
10 UE is "single radio capability", and the access policy information of the operator is "single
radio access".
[0172] If yes, the bearer resources and the MM context used by the UE in the 3GPP
network are deleted.
[0173] Moreover, the delete bearer request added with the cause 1E in step 608 may be
15 replaced by another message, for example, replaced by a release bearer request message.
The release bearer request message indicates that the reason for deleting the bearer is the
handover or switching of the UE from the 3GPP network to the non-3GPP network;
alternatively, the delete bearer request message sent in step 608 does not carry the reason
for deleting the bearer, and when the UE is handed over or switched from the 3GPP
20 network to the non-3GPP network, a normal delete bearer request is sent to the MME. In
step 608, after receiving the specific message or the normal delete bearer request message,
the MME deletes the bearer resources; and the operations of the MME after the bearer
resources are deleted are similar to the operations of the MME after receiving the delete
bearer request message.
25 [0174] As for the first embodiment, it should be noted that the detachment method in this
embodiment is also applicable to the handover or switching of the UE from a non-3GPP
network to a 3GPP network.
NSN677-1002, Page 104
29
[0175] In step I, after the UE is handed over or switched to a 3GPP network, the PDN
GW sends the binding revocation indication message to a non-3GPP GW. The message
carries the cause IE indicating the reason for the binding revocation. As for the binding
revocation caused by the handover or switching from the non-3GPP network to the 3GPP
5 network, the PDN GW sets the cause IE as "UE's accessing RAT changed from a non-3GPP
network to a 3GPP network"; and as for the binding revocation that is not caused by the
handover or change, the PDN GW sets the cause IE to other values.
[0176] In step II, the non-3GPP GW deletes the bearer resources after receiving the
binding revocation indication message. If the non-3GPP GW finds that all bearer resources
10 of the UE are deleted, the non-3GPP GW further determines whether to delete the MM
context of the UE (that is, to detach the UE from the non-3GPP network), which
specifically includes the following circumstances.
[0177] 1) The non-3GPP GW makes the following determination according to the Cause
IE carried in the binding revocation indication message, in which the non-3GPP GW
15 determines whether the cause IE carried in the binding revocation indication message is
represented as "UE's accessing RAT changed from a non-3GPP network to a 3GPP
network"; if yes, the non-3GPP GW deletes the MM context of the UE, and does not send
the detach request message to the UE; otherwise, the non-3GPP GW sends the detach
request message to the UE, and notifies the UE to delete the MM context and bearer
20 resources of the non-3GPP network in the UE.
[0178] 2) The non-3GPP GW makes the following determination according to the IE
carried in the binding revocation indication message and the terminal capability of the UE,
in which if the non-3GPP GW determines that the IE carried in the received binding
revocation indication message is represented as "UE's accessing RAT changed from a
25 non-3GPP network to a 3GPP network", and the non-3GPP GW knows that the terminal
capability of the UE is "single radio capability", the non-3GPP GW deletes the MM context
of the UE, and does not send the detach request message to the UE; as for the bearer
NSN677-1002, Page 105
30
deletion caused by other reasons, the non-3GPP GW deletes the MM context of the UE, and
sends the detach request message to the UE. If the non-3GPP GW knows that the terminal
capability of the UE is "multi radio capability", the non-3GPP GW does not delete the MM
context of the UE (that is, does not detach the UE from the non-3GPP network).
5 [0179] 3) The non-3GPP GW makes the following determination according to the IE
carried in the binding revocation indication message and the access policy information of
the operator, in which if the non-3GPP GW determines that the IE carried in the received
binding revocation indication message is represented as "UE's accessing RAT changed from
a non-3GPP network to a 3GPP network", and the non-3GPP GW knows that the access
10 policy information of the operator is "single radio access", the non-3GPP GW deletes the
MM context of the UE, and does not send the detach request message to the UE; as for the
bearer deletion caused by other reasons, the non-3GPP GW deletes the MM context of the
UE, and sends the detach request message to the UE. If the non-3GPP GW knows that the
access policy information of the operator is "multi radio access", the non-3GPP GW does
15 not delete the MM context of the UE (that is, does not detach the UE from the non-3GPP
network).
[0180] 4) The non-3GPP GW makes the following determination according to the IE
carried in the binding revocation indication message, the terminal capability of the UE, and
the access policy information of the operator, in which if the non-3GPP GW determines
20 that the IE carried in the received binding revocation indication message is represented as
"UE's accessing RAT changed from a non-3GPP network to a 3GPP network", the terminal
capability of the UE is "dual radio capability", and the access policy information of the
operator is "single radio access", or if the non-3GPP GW determines that the IE carried in
the received binding revocation indication message is represented as "UE's accessing RAT
25 changed from a non-3GPP network to a 3GPP network", the access policy information of
the operator is "multi radio access", and the terminal capability of the UE is "single radio
capability", or if the non-3GPP GW determines that the IE carried in the received binding
revocation indication message is represented as "UE's accessing RAT changed from a
NSN677-1002, Page 106
31
non-3GPP network to a 3GPP network", the terminal capability of the UE is "single radio
capability", and the access policy information of the operator is "single radio access", the
non-3GPP GW deletes the MM context of the UE, and does not send the detach request
message to the UE; as for the bearer deletion caused by other reasons, the non-3GPP GW
5 deletes the MM context of the UE, and sends the detach request message to the UE. If the
non-3GPP GW knows that the terminal capability of the UE is "dual radio capability", and
the access policy information of the operator is "multi radio access", the non-3GPP GW
does not delete the MM context of the UE (that is, does not detach the UE from the
non-3GPP network).
10 [0181] FIG. 7 shows a second example of the method for user detachment when a
handover or change occurs in a heterogeneous network according to an embodiment of the
present invention. The method includes the following steps.
[0182] Steps 701-707 are the same as steps 201-207 in FIG. 2.
[0183] In step 708a, the PDN GW determines whether to delete the default bearer of the
15 UE; if yes, the PDN GW sends the delete bearer request message corresponding to the
default bearer to the serving GW, and the serving GW sends the received delete bearer
request message to the MME.
[0184] The default bearer is a part of the bearer resources.
[0185] In this step, the interface protocol between the PDN GW and the serving GW is
20 the GTP. If the interface protocol between the PDN GW and the serving GW is the PMIP,
step 708a is replaced by step 708b, in which the PDN GW sends the binding revocation
indication message to the serving GW, and the serving GW determines whether to delete
the default bearer of the UE; if yes, the serving GW sends the delete bearer request message
corresponding to the default bearer to the MME, and the MME deletes the MM context and
25 the bearer resources.
[0186] In step 708a or 708b, the PDN GW/serving GW determines whether to delete the
NSN677-1002, Page 107
32
default bearer of the UE in the following manners. The PDN GW/serving GW determines
whether to delete the default bearer of the UE according to the handover or change of the
UE in the access network, or according to the handover or change of the UE in the access
network and the terminal capability of the UE, or according to the handover or change of
5 the UE in the access network and the access policy information of the operator, or
according to the handover or change of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator. The terminal
capability of the UE and the access policy information of the operator are obtained by the
network elements according to the flows shown in FIGs. 3 and 4. Specifically, the
10 determination process includes the following circumstances.
[0187] 1) The PDN GW/serving GW determines whether to delete the default bearer of
the UE according to the handover or change of the UE in the access network, in which the
PDN GW/serving GW determines whether the UE is handed over or switched from the
3GPP network to the non-3GPP network; if yes, the PDN GW/serving GW determines to
15 delete the default bearer of the UE, and sends the delete bearer request message
corresponding to the default bearer to the MME.
[0188] 2) The PDN GW/serving GW determines whether to delete the default bearer of
the UE according to the handover or change of the UE in the access network and the
terminal capability of the UE, in which the PDN GW/serving GW determines whether the
20 UE is handed over or switched from the 3GPP network to the non-3GPP network and
whether the terminal capability of the UE is "single radio capability"; if yes, the PDN
GW/serving GW determines to delete the default bearer of the UE, and sends the delete
bearer request message corresponding to the default bearer to the MME.
[0189] 3) The PDN GW/serving GW determines whether to delete the default bearer of
25 the UE according to the handover or change of the UE in the access network and the access
policy information of the operator, in which the PDN GW/serving GW determines whether
the UE is handed over or switched from the 3GPP network to the non-3GPP network and
NSN677-1002, Page 108
33
whether the access policy information of the operator is "single radio access"; if yes, the
PDN GW/serving GW determines to delete the default bearer of the UE, and sends the
delete bearer request message corresponding to the default bearer to the MME.
[0190] 4) The PDN GW/serving GW determines whether to delete the default bearer of
5 the UE according to the handover or change of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator, in which the PDN
GW/serving GW determines whether the handover or change of the UE in the access
network, the terminal capability of the UE, and the access policy information of the
operator satisfy one of the following three conditions: 1. the UE is handed over or switched
10 from the 3GPP network to the non-3GPP network, the terminal capability of the UE is
"dual radio capability", and the access policy information of the operator is "single radio
access"; 2. the UE is handed over or switched from the 3GPP network to the non-3GPP
network, the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability"; and 3. the UE is handed over or
15 switched from the 3GPP network to the non-3GPP network, the terminal capability of the
UE is "single radio capability", and the access policy information of the operator is "single
radio access".
[0191] If yes, the PDN GW/serving GW determines to delete the default bearer of the
UE, and sends the delete bearer request message corresponding to the default bearer to the
20 MME.
[0192] In step 709a, the MME returns a delete bearer response message to the serving
GW, and the serving GW returns the delete bearer response message to the PDN GW.
[0193] In this step, the interface protocol between the PDN GW and the serving GW is
the GTP. If the interface protocol between the PDN GW and the serving GW is the PMIP,
25 step 709a is replaced by step 709b, in which the MME returns the delete bearer response
message to the serving GW, and the serving GW returns the binding revocation Ack
message to the PDN GW.
NSN677-1002, Page 109
34
[0194] In step 710, if the MME finds that the default bearer of the UE is deleted, the
MME deletes the MM context of the UE (that is, the MME detaches the UE from the 3GPP
network).
[0195] If the MME finds that the subscription data and the MM context of the UE are
5 deleted, the MME sends a purge UE message to the HSS/AAA server, and the HSS/AAA
server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0196] In this step, it is determined whether to delete the subscription data of the UE by
the MME according to the actual conditions. This step is optional.
[0197] Step 709 and step 710 may be performed at any order.
10 [0198] In the above embodiment, the UE is detached after step 707. The detachment
process is as follows: according to the handover or change of the UE in the access network,
or according to the handover or change of the UE in the access network and the terminal
capability of the UE, or according to the handover or change of the UE in the access
network and the access policy information of the operator, or according to the handover or
15 change of the UE in the access network, the terminal capability of the UE, and the access
policy information of the operator, the UE determines whether to perform the detachment,
which specifically includes the following four circumstances.
[0199] 1) It is determined whether the UE is handed over or switched from the 3GPP
network to the non-3GPP network; if yes, the UE also deletes the default bearer, and deletes
20 the MM context and bearer resources used by the UE in the 3GPP network (that is, the UE
is detached from the 3GPP network); otherwise, the UE does not delete the default bearer,
and does not delete the MM context used by the UE in the 3GPP network.
[0200] 2) It is determined whether the UE is handed over or switched from the 3GPP
network to the non-3GPP network and whether the terminal capability of the UE is "single
25 radio capability"; if yes, the UE also deletes the default bearer, and deletes the MM context
and bearer resources used by the UE in the 3GPP network (that is, the UE is detached from
NSN677-1002, Page 110
35
the 3GPP network); otherwise, the UE does not delete the default bearer, and does not
delete the MM context used by the UE in the 3GPP network.
[0201] 3) It is determined whether the UE is handed over or switched from the 3GPP
network to the non-3GPP network and whether the access policy information of the
5 operator is "single radio access" ; if yes, the UE also deletes the default bearer, and deletes
the MM context and bearer resources used by the UE in the 3GPP network (that is, the UE
is detached from the 3GPP network); otherwise, the UE does not delete the default bearer,
and does not delete the MM context used by the UE in the 3GPP network.
[0202] 4) It is determined whether the handover or change of the UE in the access
10 network, the terminal capability of the UE, and the access policy information of the
operator satisfy one of the following three conditions: 1. the UE is handed over or switched
from the 3GPP network to the non-3GPP network, the terminal capability of the UE is
"dual radio capability", and the access policy information of the operator is "single radio
access"; 2. the UE is handed over or switched from the 3GPP network to the non-3GPP
15 network, the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability"; and 3. the UE is handed over or
switched from the 3GPP network to the non-3GPP network, the terminal capability of the
UE is "single radio capability", and the access policy information of the operator is "single
radio access".
20 [0203] If yes, the UE deletes the default bearer, and deletes the MM context and bearer
resources used by the UE in the 3GPP network (that is, the UE is detached from the 3GPP
network); otherwise, the UE does not delete the default bearer, and does not delete the MM
context used by the UE in the 3GPP network.
[0204] FIG. 8 shows a third example of the method for user detachment when a handover
25 or change occurs in a heterogeneous network according to an embodiment of the present
invention. The method includes the following steps.
NSN677-1002, Page 111
36
[0205] Steps 801-807 are the same as steps 201-207 in FIG. 2.
[0206] In step 808a, the PDN GW sends a detach request message to the MME through
the serving GW, and the detach request message carries a cause value represented as
"detach because of UE's accessing RAT changed from a 3GPP network to a non-3GPP
5 network", which indicates that the detach request message is caused by the handover or
switching of the UE from the 3GPP network to the non-3GPP network.
[0207] In this step, no interface exists between the PDN GW and the MME. If an
interface exists between the PDN GW and the MME, step 808a is replaced by step 808b, in
which the PDN GW sends a Detach Request message to the MME, and the Detach Request
10 message carries a Cause value represented as "Detach because of UE's accessing RAT
changed from a 3GPP network to a non-3GPP network", indicating that the detach request
message is caused by the handover or change of the UE from the 3GPP network to the
non-3GPP network.
[0208] If the interface protocol between the PDN GW and the MME is the PMIP, step
15 808a is replaced by step 808c, in which the PDN GW sends a binding revocation Ind
message to the serving GW, and the serving GW sends the detach request message to the
MME, and the detach request message carries a cause value represented as "detach because
of UE's accessing RAT changed from a 3GPP network to a non-3GPP network", indicating
that the detach request message is caused by the handover or change of the UE from the
20 3GPP network to the non-3GPP network.
[0209] In step 808a, 808b, or 808c, before the detach request message is sent, the process
further includes determining whether to send the detach request message according to the
handover or change of the UE in the access network, or according to the handover or
change of the UE in the access network and the terminal capability of the UE, or according
25 to the handover or change of the UE in the access network and the access policy
information of the operator, or according to the handover or change of the UE in the access
network, the terminal capability of the UE, and the access policy information of the
NSN677-1002, Page 112
37
operator; if yes, the detach request message is sent to the MME; otherwise, the process ends.
In steps 808a and 808b, the determination is performed by the PDN GW, and in step 808c,
the determination is performed by the serving GW. Whether to send the detach request
message may be determined according to the following circumstances.
5 [0210] 1) The PDN GW/serving GW determines whether to send the detach request
message to the MME according to the handover or change of the UE in the access network,
in which the PDN GW/serving GW determines whether the UE is handed over from the
3GPP network to the non-3GPP network; if yes, the detach request message is sent to the
MME; otherwise, the process ends.
10 [0211] 2) The PDN GW/serving GW determines whether to send the detach request
message to the MME according to the handover or change of the UE in the access network
and the terminal capability of the UE, in which the PDN GW/serving GW determines
whether the UE is handed over or switched from the 3GPP network to the non-3GPP
network and whether the terminal capability of the UE is "single radio capability"; if yes,
15 the detach request message is sent to the MME; otherwise, the process ends.
[0212] 3) The PDN GW/serving GW determines whether to send the detach request
message to the MME according to the handover or change of the UE in the access network
and the access policy information of the operator, in which the PDN GW/serving GW
determines whether the UE is handed over or switched from the 3GPP network to the
20 non-3GPP network and whether the access policy information of the operator is "single
radio access"; if yes, the detach request message is sent to the MME; otherwise, the process
ends.
[0213] 4) The PDN GW/serving GW determines whether to send the detach request
message to the MME according to the handover or change of the UE in the access network,
25 the terminal capability of the UE, and the access policy information of the operator, in
which the PDN GW/serving GW determines whether the handover or change of the UE in
the access network, the terminal capability of the UE, and the access policy information of
NSN677-1002, Page 113
38
the operator satisfy one of the following three conditions: 1. the UE is handed over or
switched from the 3GPP network to the non-3GPP network, the terminal capability of the
UE is "dual radio capability", and the access policy information of the operator is "single
radio access"; 2. the UE is handed over or switched from the 3GPP network to the
5 non-3GPP network, the access policy information of the operator is "multi radio access",
and the terminal capability of the UE is "single radio capability"; and 3. the UE is handed
over or switched from the 3GPP network to the non-3GPP network, the terminal capability
of the UE is "single radio capability", and the access policy information of the operator is
"single radio access".
10 [0214] If yes, the detach request message is sent to the MME; otherwise, the process
ends.
[0215] In step 809a, the MME receives the detach request message, deletes the MM
context, and sends a detach response message to the PDN GW through the serving GW.
[0216] In this step, no interface exists between the PDN GW and the MME. If an
15 interface exists between the PDN GW and the MME, step 809a is replaced by step 809b, in
which the MME receives the detach request message, deletes the MM context, and directly
sends a detach response message to the PDN GW.
[0217] If the interface protocol between the PDN GW and the MME is the PMIP, step
809a is replaced by step 809c, in which the PDN GW sends the detach response message to
20 the serving GW, and the serving GW returns a binding revocation Ack message to the PDN
GW.
[0218] In step 810, the MME initiates a bearer deletion process to delete the bearer
resources used by the UE on the 3GPP network side (including the MME, serving GW, and
PDN GW).
25 [0219] In step 811, if the MME finds that the subscription data and the MM context of
the UE are deleted, the MME sends a purge UE message to the HSS/AAA server, and then
NSN677-1002, Page 114
39
the HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to
the MME.
[0220] In this step, it is determined whether to delete the subscription data of the UE by
the MME according to the actual conditions. This step is optional.
5 [0221] Step 809 and Step 811 may be performed at any order.
[0222] In this embodiment, the UE is detached after step 807, and the detailed process
thereof can be known with reference to the descriptions of the third example of the method
for user detachment.
[0223] In this embodiment, it should be noted that, the detach request message sent by
10 the PDN GW or serving GW may not carry the cause value.
[0224] In this embodiment, it should be noted that, the method in this embodiment is
also applicable to the handover or switching of the UE from the non-3GPP network to the
3GPP network.
[0225] After the UE is handed over or switched from the non-3GPP network to the 3GPP
15 network, the PDN GW determines whether to detach the UE from the non-3GPP network
and whether to send the detach request message to the non-3GPP GW, which includes
determining whether to send the detach request message according to the handover or
change of the UE in the access network, or according to the handover or change of the UE
in the access network and the terminal capability of the UE, or according to the handover or
20 change of the UE in the access network and the access policy information of the operator,
or according to the handover or change of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator; if yes, the detach
request message is sent to the non-3GPP GW. The detailed process thereof can be known
with reference to the descriptions of the above embodiment.
25 [0226] FIG. 9 shows a fourth example of the method for user detachment when a
NSN677-1002, Page 115
40
handover or change occurs in a heterogeneous network according to an embodiment of the
present invention. The method includes the following steps.
[0227] Steps 901-907 are the same as steps 201-207 in FIG. 2.
[0228] In step 908, the PDN GW sends a register request message to the HSS/AAA
5 server, and the message carries an RAT type of the UE.
[0229] The value of the RAT Type may be one of the following two circumstances.
[0230] The RAT Type may be a 3GPP network, which indicates that the network that the
UE accesses currently is a 3GPP network; and the RAT Type may be a non-3GPP network,
which indicates that the network that the UE accesses currently is a non-3GPP network.
10 [0231] The RAT Type of the UE may also be a specific network type, for example,
GERAN, UTRAN, or EUTRAN network in the 3GPP networks, or WLAN, Wimax, and
CDMA network in the non-3GPP networks.
[0232] Step 906 and step 908 may be performed at any order.
[0233] In step 909, the HSS/AAA server returns a register response message to the PDN
15 GW.
[0234] In step 910, when the HSS/AAA server determines that the RAT Type of the UE
registered last time is inconsistent with that of the UE registered this time, the HSS/AAA
server sends a cancel location message to the MME, in which the cancel location message
carries a cause value represented as "Cancel because of UE's accessing RAT changed from
20 a 3GPP network to a non-3GPP network", indicating that the cancel location is caused by
the handover or switching of the UE from the 3GPP network to the non-3GPP network.
[0235] In this step, before the cancel location message is sent to the MME, the process
further includes that the HSS/AAA server determines whether to send the cancel location
message according to the handover or change of the UE in the access network, or according
NSN677-1002, Page 116
41
to the handover or change of the UE in the access network and the terminal capability of the
UE, or according to the handover or change of the UE in the access network and the access
policy information of the operator, or according to the handover or change of the UE in the
access network, the terminal capability of the UE, and the access policy information of the
5 operator; if yes, the HSS/AAA server sends the cancel location message to the MME;
otherwise, the HSS/AAA server does not send the cancel location message to the MME,
and the process ends. Specifically, the determination process specifically includes the
following circumstances.
[0236] 1) The HSS/AAA server determines whether to send the cancel location message
10 to the MME according to the handover or change of the UE in the access network, in which
the HSS/AAA server determines whether the UE is handed over or switched from the 3GPP
network to the non-3GPP network; if yes, the HSS/AAA server sends the cancel location
message to the MME; otherwise, the HSS/AAA server does not send the cancel location
message to the MME, and the process ends.
15 [0237] 2) The HSS/AAA server determines whether to send the cancel location message
to the MME according to the handover or switching of the UE in the access network and the
terminal capability of the UE, in which if the HSS/AAA server determines that the UE is
handed over or switched from the 3GPP network to the non-3GPP network, and the
terminal capability of the UE is "single radio capability", the HSS/AAA server sends the
20 cancel location message to the MME; if the HSS/AAA server determines that the terminal
capability of the UE is "multi radio capability", the HSS/AAA server does not send the
cancel location message to the MME.
[0238] 3) The HSS/AAA server determines whether to send the cancel location message
to the MME according to the handover or change of the UE in the access network and the
25 access policy information of the operator, in which if the HSS/AAA server determines that
the UE is handed over or switched from the 3GPP network to the non-3GPP network, and
the access policy information of the operator is "single radio access", the HSS/AAA server
NSN677-1002, Page 117
42
sends the cancel location message to the MME; if the HSS/AAA server determines that the
UE is handed over or switched from the 3GPP network to the non-3GPP network, and the
access policy information of the operator is "multi radio access", the HSS/AAA server does
not send the cancel location message to the MME.
5 [0239] 4) The HSS/AAA server determines whether to send the cancel location message
to the MME according to the handover or switching of the UE in the access network, the
terminal capability of the UE, and the access policy information of the operator, in which if
the HSS/AAA server determines that the UE is handed over or switched from the 3GPP
network to the non-3GPP network, the terminal capability of the UE is "dual radio
10 capability", and the access policy information of the operator is "single radio access", or if
the HSS/AAA server determines that the UE is handed over or switched from the 3GPP
network to the non-3GPP network, the access policy information of the operator is "multi
radio access", and the terminal capability of the UE is "single radio capability", or if the
HSS/AAA server determines that the UE is handed over or switched from the 3GPP
15 network to the non-3GPP network, the terminal capability of the UE is "single radio
capability", and the access policy information of the operator is "single radio access", the
HSS/AAA server sends the cancel location message to the MME; if the HSS/AAA server
determines that the terminal capability of the UE is "dual radio capability" and the access
policy information of the operator is "multi radio access", the HSS/AAA server does not
20 send the cancel location message to the MME.
[0240] In step 911, after receiving the cancel location message, the MME deletes the
MM context of the UE, and returns a cancel location Ack message to the HS S/AAA server.
[0241] In step 912, if the MME finds that the subscription data and the MM context of
the UE are deleted, the MME sends a purge UE message to the HSS/AAA server, and then
25 the HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to
the MME.
[0242] In this step, it is determined whether to delete the subscription data of the UE by
NSN677-1002, Page 118
43
the MME according to the actual conditions. This step is optional.
[0243] In step 913, the MME initiates a bearer deletion process to delete the bearer
resources used by the UE on the 3GPP network side (including the MME, serving GW, and
PDN GW).
5 [0244] In this embodiment, the UE is detached after step 907, and the detailed process
thereof can be known with reference to the descriptions of the third example of the method
for user detachment.
[0245] In this embodiment, it should be noted that, the HSS and the AAA server may be
configured in different entities or in a same entity. When the HSS and the AAA server are
10 configured in different entities, the register request message sent by the PDN GW in step
908 is forwarded to the HSS through the AAA server, the register response message sent by
the HSS in step 909 is forwarded to the PDN GW through the AAA server, the cancel
location message sent to the MME in step 910 is sent to the MME by the HSS, and the
purge UE message sent by the MME in step 912 is sent to the HSS. The cancel location
15 message sent by the HSS/AAA server may not carry the cause value.
[0246] In this embodiment, it should be noted that, the method in this embodiment is
also applicable to the handover or switching of the UE from a non-3GPP network to a
3GPP network.
[0247] In Step I, after the UE is handed over or switched from the non-3GPP network to
20 the 3GPP network, the MME or the PDN GW registers a new RAT Type of the UE with the
HSS/AAA server.
[0248] In Step II, if the HSS/AAA server determines that the RAT type of the UE
registered last time is inconsistent with that of the UE registered this time, the HSS/AAA
server determines whether to send the cancel location message to a non-3GPP GW (to
25 notify the non-3GPP GW to detach the UE from the non-3GPP network) according to the
handover or change of the UE in the access network, or according to the handover or
NSN677-1002, Page 119
44
change of the UE in the access network and the terminal capability of the UE, or according
to the handover or change of the UE in the access network and the access policy
information of the operator, or according to the handover or change of the UE in the access
network, the terminal capability of the UE, and the access policy information of the
5 operator. If yes, the HSS/AAA server sends the cancel location message to the non-3GPP
GW. The detailed process thereof can be known with reference to the descriptions of the
above embodiment.
[0249] FIG. 10 shows a fifth example of the method for user detachment when a
handover or change occurs in a heterogeneous network according to an embodiment of the
10 present invention. The method includes the following steps.
[0250] In step 1001, the UE accesses a 3GPP access network through the serving GW
and the PDN GW.
[0251] In step 1002, the UE triggers a handover or switching from the 3GPP network to
the non-3GPP network.
15 [0252] In step 1003, the MME sends a handover or switching request (HO Request)
message to a non-3GPP GW.
[0253] In this step, as for a WLAN system, the non-3GPP GW is an EPDG; as for a
Wimax system, the non-3GPP GW is an ASN GW; and as for a CDMA system, the
non-3GPP GW is an AGW.
20 [0254] In Step 1004, the non-3GPP GW performs a resource create procedure.
[0255] In this step, the resource create procedure includes performing the processes of
user authentication and PMIP tunnel binding.
[0256] In step 1005, the non-3GPP GW returns an HO response message to the MME.
[0257] In step 1006, the MME sends an HO command message to the UE, and
NSN677-1002, Page 120
45
commands the UE to hand over or switch to an access network of the non-3GPP network.
[0258] In step 1007, the UE sends an access request message to the non-3GPP GW, and
is handed over or switched to the non-3GPP network.
[0259] In step 1008, the non-3GPP GW returns an access accept message to the UE.
5 [0260] Steps 1001-1008 and the process of the handover or switching of the UE from a
3GPP network to a non-3GPP network in the prior art implement functions similar to that
of steps 201-207 in FIG. 2.
[0261] In step 1009, the non-3GPP GW returns an HO complete message to the MME.
[0262] In step 1010, the MME returns an HO complete Ack message to the non-3GPP
10 GW.
[0263] Step 1010 further includes: determining, by the MME, whether to delete the MM
context of the UE (that is, to detach the UE from the 3GPP network) according to the
handover or change of the UE in the access network, or according to the handover or
change of the UE in the access network and the terminal capability of the UE, or according
15 to the handover or change of the UE in the access network and the access policy
information of the operator, or according to the handover or change of the UE in the access
network, the terminal capability of the UE, and the access policy information of the
operator; if yes, the MME deletes the MM context of the UE; otherwise, the process ends.
Specifically, the determination process includes the following four circumstances.
20 [0264] 1) The MME determines whether to delete the MM context of the UE according
to the handover or change of the UE in the access network, in which if the MME
determines that the UE is handed over or switched from the 3GPP network to the non-3GPP
network, the MME deletes the MM context of the UE; otherwise, the MME does not delete
the MM context of the UE.
25 [0265] 2) The MME determines whether to delete the MM context of the UE according
NSN677-1002, Page 121
46
to the handover or change of the UE in the access network and the terminal capability of the
UE, in which if the MME determines that the UE is handed over or switched from the
3GPP network to the non-3GPP network, and the terminal capability of the UE is "single
radio capability", the MME deletes the MM context of the UE; if the MME determines that
5 the terminal capability of the UE is "multi radio capability", the MME does not delete the
MM context of the UE.
[0266] 3) The MME determines whether to delete the MM context of the UE according
to the handover or change of the UE in the access network and the access policy
information of the operator, in which if the MME determines that the UE is handed over or
10 switched from the 3GPP network to the non-3GPP network, and the access policy
information of the operator is "single radio access", the MME deletes the MM context of
the UE; if the MME determines that the access policy information of the operator is "multi
radio access", the MME does not delete the MM context.
[0267] 4) The MME determines whether to delete the MM context of the UE according
15 to the handover or change of the UE in the access network, the terminal capability of the
UE, and the access policy information of the operator, in which if the MME determines that
the UE is handed over or switched from the 3GPP network to the non-3GPP network, the
terminal capability of the UE is "dual radio capability", and the access policy information of
the operator is "single radio access", or if the MME determines that the UE is handed over
20 or switched from the 3GPP network to the non-3GPP network, the access policy
information of the operator is "multi radio access", and the terminal capability of the UE is
"single radio capability", or if the MME determines that the UE is handed over or switched
from the 3GPP network to the non-3GPP network, the terminal capability of the UE is
"single radio capability", and the access policy information of the operator is "single radio
25 access", the MME deletes the MM context of the UE; if the MME determines that the
terminal capability of the UE is "dual radio capability", and the access policy information of
the operator is "multi radio access", the MME does not delete the MM context of the UE.
NSN677-1002, Page 122
47
[0268] In step 1011, if the MME finds that the subscription data and the MM context of
the UE are deleted, the MME sends a purge UE message to the HSS/AAA server, and then
the HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to
the MME.
5 [0269] In this step, it is determined whether to delete the subscription data of the UE by
the MME according to the actual conditions. This step is optional.
[0270] In step 1012, the MME initiates a bearer deletion process to delete the bearer
resources used by the UE on the 3GPP network side (including the MME, serving GW, and
PDN GW).
10 [0271] In this embodiment, the UE is detached after Step 1007, and the detailed process
thereof can be known with reference to the descriptions of the third example of the method
for user detachment.
[0272] In this embodiment, it should be noted that, the method in this embodiment is
also applicable to the handover or switching of the UE from the non-3GPP network to the
15 3GPP network.
[0273] In Step I, after the UE is handed over or switched from the non-3GPP network to
network, the MME returns an HO complete message to the non-3GPP GW.
[0274] In step II, the non-3GPP GW determines whether to delete the MM context of the
UE (that is, to detach the UE from the non-3GPP network) according to the handover or
20 change of the UE in the access network, or according to the handover or change of the UE
in the access network and the terminal capability of the UE, or according to the handover or
change of the UE in the access network and the access policy information of the operator,
or according to the handover or change of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator; if yes, the
25 non-3GPP GW deletes the MM context of the UE. The detailed process thereof can be
known with reference to the descriptions of the above embodiment.
NSN677-1002, Page 123
48
[0275] FIG. 11 shows a sixth example of the method for user detachment when a
handover or change occurs in a heterogeneous network according to an embodiment of the
present invention. The method includes the following steps.
[0276] Steps 1101-1102 are the same as steps 201-202 in FIG. 2.
5 [0277] In step 1103, the UE sends a detach request message to the MME, and the detach
request message carries a cause value represented as "detach because of UE's accessing
RAT changed from a 3GPP network to a non-3GPP network", indicating that the detach
request message is caused by the handover or change of the UE from the 3GPP network to
the non-3GPP network.
10 [0278] In this step, before the UE sends the detach request message to MME, the process
further includes determining whether to detach the UE from the 3GPP network according to
the handover of the UE in the access network, or according to the handover of the UE in the
access network and the terminal capability of the UE, or according to the handover of the
UE in the access network and the access policy information of the operator, or according to
15 the handover of the UE in the access network, the terminal capability of the UE, and the
access policy information of the operator. If yes, the UE sends the detach request message
to the MME; otherwise, step 1107 is performed. The terminal capability of the UE and the
access policy information of the operator are obtained by the network elements according to
the processes of FIGs. 3 and 4. Specifically, the determination process includes the
20 following circumstances.
[0279] 1) The UE determines whether to detach the UE from the 3GPP network and
whether to send the detach request message to the MME according to the handover or
change of the UE in the access network, in which the UE determines whether the UE is
handed over or switched from the 3GPP network to the non-3GPP network; if yes, the MM
25 context and bearer resources of the 3GPP network in the UE are deleted, and the detach
request message is sent to the MME; otherwise, step 1107 is performed.
NSN677-1002, Page 124
49
[0280] 2) The UE determines whether to detach the UE from the 3GPP network and
whether to send the detach request message to the MME according to the handover or
change of the UE in the access network and the terminal capability of the UE, in which if
the UE determines that the UE is handed over or switched from the 3GPP network to the
5 non-3GPP network, and the terminal capability of the UE is "single radio capability", the
MM context and the bearer resources of the 3GPP network in the UE are deleted, and the
detach request message is sent to the MME; if the UE determines that the terminal
capability of the UE is "multi radio capability", the MM context of the 3GPP network in the
UE is not deleted (that is, the UE is not detached from the 3GPP network), the detach
10 request message is not sent to the MME, and step 1107 is performed.
[0281] 3) The UE determines whether to detach the UE from the 3GPP network and
whether to send the detach request message to the MME according to the handover or
change of the UE in the access network and the access policy information of the operator, in
which if the UE determines that the UE is handed over or switched from the 3GPP network
15 to the non-3GPP network, and the access policy information of the operator is "single radio
access", the MM context and the bearer resources of the 3GPP network in the UE are
deleted, and the detach request message is sent to the MME; if the UE determines that the
access policy information of the operator is "multi radio access", the MM context of
network in the UE is not deleted (that is, the UE is not detached from the 3GPP network),
20 the detach request message is not sent to the MME, and step 1107 is performed.
[0282] 4) The UE determines whether to detach the UE from the 3GPP network
according to the handover or change of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator, in which if the UE
determines that the UE is handed over or switched from the 3GPP network to the non-3GPP
25 network, the terminal capability of the UE is "dual radio capability", and the access policy
information of the operator is "single radio access", or if the UE determines that the UE is
handed over or switched from the 3GPP network to the non-3GPP network, the access
policy information of the operator is "multi radio access", and the terminal capability of the
NSN677-1002, Page 125
50
UE is "single radio capability", or if the UE determines that the UE is handed over or
switched from the 3GPP network to the non-3GPP network, the terminal capability of the
UE is "single radio capability", and the access policy information of the operator is "single
radio access", the MM context and the bearer resources of the 3GPP network in the UE are
5 deleted, and the detach request message is sent to the MME. If the UE determines that the
terminal capability of the UE is "dual radio capability", and the access policy information of
the operator is "multi radio access", the MM context of the 3GPP network in the UE is not
deleted (that is, the UE is not detached from the 3GPP network), the detach request
message is not sent to the MME, and step 1107 is performed.
10 [0283] In step 1104, after the MME receives the detach request message, the MME
deletes the MM context of the UE in the MME, initiates a bearer deletion process, and
deletes the bearer resources used by the UE on the 3GPP network side.
[0284] In this step, the bearer resources used by the UE on the 3GPP network side
include the bearer resources used by the UE in the MME, serving GW, and PDN GW.
15 [0285] In step 1105, if the MME finds that the subscription data and the MM context of
the UE are deleted, the MME sends a purge UE message to the HSS/AAA server, and then
the HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to
the MME.
[0286] In this step, it is determined whether to delete the subscription data of the UE by
20 the MME according to the actual conditions. This step is optional.
[0287] In step 1106, the MME sends a Detach Accept message to the UE.
[0288] Steps 1107-1111 are the same as steps 203-207 in FIG. 2.
[0289] Step 1103 and step 1107 may be performed at any order.
[0290] In this embodiment, it should be noted that, the method in this embodiment is
25 also applicable to the handover or switching of the UE from the non-3GPP network to the
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3GPP network.
[0291] When the UE is handed over from the non-3GPP network to the 3GPP network,
the UE determines whether to detach the UE from the non-3GPP network according to the
handover of the UE in the access network, or according to the handover of the UE in the
5 access network and the terminal capability of the UE, or according to the handover of the
UE in the access network and the access policy information of the operator, or according to
the handover of the UE in the access network, the terminal capability of the UE, and the
access policy information of the operator. If yes, the UE sends the detach request message
to the non-3GPP GW. The detailed process thereof can be known with reference to the
10 description of the above embodiment.
[0292] It should be noted that, in this embodiment, the serving GW and the PDN GW
may be configured in different entities or in the same entity. When the serving GW and the
PDN GW are configured in the same entity, the messages between the serving GW and the
PDN GW are transmitted in the same entity. The HSS and the AAA server may be
15 configured in different entities or in the same entity. If the HSS and the AAA server are
configured in different entities, the MME sends the purge UE message to the HSS.
[0293] In the embodiments of the present invention, if the user detachment is caused by
the handover or change of the UE from the 3GPP network to the non-3GPP network, after
the user detachment, the process may further include: setting, by the MME of the 3GPP, the
20 state of the UE to an invalid state. Specifically, the process of setting, by the MME of the
3GPP, the state of the UE to an invalid state is implemented as follows.
[0294] The MME deletes the subscription date information and the MM context of the
UE.
[0295] Alternatively, the MME retains the subscription data information of the UE, but
25 sets the state of the MME used by the UE to an invalid state.
[0296] Alternatively, the state of the MME used by the UE is set to an invalid value.
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[0297] Alternatively, the MME retains the subscription data information of the UE, but
sets a change flag location of the MME used by the UE to a changed state.
[0298] In the embodiments of the present invention, if the user detachment is caused by
the handover or switching of the UE from the non-3GPP network to the 3GPP network,
5 after the user detachment, the process may further include: setting, by the non-3GPP GW of
the non-3GPP, the state of the UE to an invalid state. Specifically, the process of setting, by
the non-3GPP GW of the non-3GPP, the state of the UE to an invalid state is implemented
as follows.
[0299] The non-3GPP GW deletes the subscription data information and the MM context
10 of the UE.
[0300] Alternatively, the non-3GPP GW retains the subscription data information of the
user, but sets the state of the non-3GPP GW used by the UE to an invalid state.
[0301] Alternatively, the address of the non-3GPP GW used by the UE is set to an
invalid value.
15 [0302] Alternatively, a non-3GPP GW retains the subscription data information of the
user, but sets a change flag position of the non-3GPP GW used by the UE to a changed
state.
[0303] FIG. 12 shows a system for user detachment when a handover or change occurs in
a heterogeneous network according to an embodiment of the present invention. The system
20 includes a UE and a network side.
[0304] The UE is adapted to be handed over or switched from a source network on the
network side to a target network.
[0305] The network side is adapted to hand over or switch the UE from the source
network to the target network to detach the UE from the source network.
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53
[0306] The UE may include a first handover or change module, and the network side
may include a second handover or change module and a second detachment module.
[0307] The first handover or change module is adapted to enable the UE to be handed
over or switched from the source network to the target network.
5 [0308] The second handover or change module is adapted to enable the network side to
hand over or switch the UE from the source network to the target network.
[0309] The second detachment module is adapted to enable the network side to detach
the UE from the source network.
[0310] Optionally, the UE includes a first detachment module adapted to detach the UE
10 from the source network.
[0311] Optionally, the UE includes a first detachment determination module and a
second detachment determination module disposed on the network side.
[0312] The first detachment determination module is adapted to determine whether to
detach the UE from the source network, and if yes, an enable instruction is sent to the first
15 detachment module to enable the first detachment module.
[0313] The second detachment determination module is adapted to determine whether to
detach the UE from the source network, and if yes, an enable instruction is sent to the
second detachment module to enable the second detachment module. The second
detachment determination module may be disposed in a network element on a network side,
20 such as an MME, a PDN GW, a serving GW, or an HS S/AAA server.
[0314] The UE further includes a module for sending terminal capability of a UE and a
module for receiving access policy information of an operator, and the network side further
includes a module for receiving the terminal capability of the UE and a module for sending
the access policy information of the operator.
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54
[0315] The module for sending the terminal capability of the UE is adapted to send the
terminal capability of the UE to the network side, and the module for receiving the access
policy information of the operator is adapted to receive the access policy information of the
operator sent by the network side.
5 [0316] The module for receiving the terminal capability of the UE is adapted to receive
the terminal capability of the UE sent by the UE, and the module for sending the access
policy information of the operator is adapted to send the access policy information of the
operator to the UE.
[0317] Based on the solutions for user detachment when a handover or change occurs in
10 a heterogeneous network according to the embodiments of the present invention, when the
UE is handed over or switched from the source network on the network side to the target
network on the network side, the source network can detach the UE from the source
network, and the UE can detach the UE from the source network.
[0318] It will be apparent to those skilled in the art that various modifications and
15 variations can be made to the present invention without departing from the scope of the
invention. In view of the foregoing, it is intended that the present invention cover
modifications and variations of this invention provided that they fall within the scope of the
following claims and their equivalents.
20
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CLAIMS
What is claimed is:
1. A method for user detachment when a handover or change occurs in a
heterogeneous network, comprising:
5 handing over or switching a user equipment (UE) from a source network to a
target network; and
determining, by a network element on a network side, whether to detach the UE
from the source network; if yes, detaching the UE from the source network; otherwise, not
detaching the UE from the source network.
10 2. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 1, wherein the source network is a
3rd-generation partnership project (3GPP) network and the target network is a non-3GPP
network; or the source network is a non-3GPP network and the target network is a 3GPP
network.
15 3. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 1, wherein the determining, by the network
element on the network side, whether to detach the UE from the source network comprises:
if it is known that the UE is handed over or switched from the source network to
the target network, determining, by the network element on the network side, to detach the
20 UE from the source network; or
if it is known that the UE is handed over or switched from the source network to
the target network, determining according to terminal capability of the UE: if the terminal
capability of the UE is single radio capability, determining, by the network element on the
network side, to detach the UE from the source network; or
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56
if it is known that the UE is handed over or switched from the source network to
the target network, determining according to access policy information of an operator: if the
access policy information of the operator is single radio access, determining, by the network
element on the network side, to detach the UE from the source network; or
5 if it is known that the UE is handed over or switched from the source network to
the target network, determining according to the terminal capability of the UE and the
access policy information of the operator: if the terminal capability of the UE is dual radio
capability and the access policy information of the operator is the single radio access, or if
the terminal capability of the UE is the single radio capability and the access policy
10 information of the operator is dual radio access, or if the terminal capability of the UE is the
single radio capability and the access policy information of the operator is the single radio
access, determining, by the network element on the network side, to detach the UE from the
source network.
4. The method for user detachment when a handover or change occurs in a
15 heterogeneous network according to claim 3, wherein the determining to detach the UE
from the source network further comprises:
if the network element on the network side is a packet data network gateway
(PDN GW), determining, by the PDN GW, whether to delete a default bearer; if yes,
sending a delete bearer request message of the default bearer to a serving gateway (serving
20 GW) of the source network, sending, by the serving GW of the source network, the received
delete bearer request message to a mobility management network element (MME) of the
source network, and detaching, by the MME of the source network, the UE; or
if the network element on the network side is the serving GW of the source
network, sending, by the PDN GW, a binding revocation indication (Ind) message to the
25 serving GW of the source network; determining, by the serving GW of the source network,
whether to delete a default bearer of the UE; if yes, sending a delete bearer request message
of the default bearer to the MME of the source network, and detaching, by the MME of the
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source network, the UE.
5. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 3, wherein:
before determining, by the MME of the source network, to detach the UE, the
5 method further comprises:
sending, by a PDN GW, a delete bearer request message or a binding revocation
Ind message to a serving GW of the source network, and sending, by the serving GW of the
source network, the delete bearer request message to an MME of the source network; or
sending, by the PDN GW, a release bearer request message to the MME of the source
10 network, wherein the release bearer request message indicates that the UE is handed over or
switched from the source network to the target network; and the delete bearer request
message or the binding revocation Ind message includes a cause value indicating a reason
for the UE to be handed over or switched from the source network to the target network;
Or
15 if the network element on the network side is a non-3GPP gateway (non-3GPP
GW), before determining, by the non-3GPP GW of the source network, to detach the UE,
the method further comprises:
sending, by the PDN GW, a binding revocation Ind message to the non-3GPP GW
of the source network; wherein the binding revocation Ind message includes a cause value
20 indicating a reason for the UE to be handed over or switched from the source network to the
target network.
6. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 3, wherein the determining to detach the UE
from the source network further comprises:
25 if the network element on the network side is a PDN GW, sending, by the PDN
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GW, a detach request message to an MME of the source network after the PDN GW
determines to detach the UE; or sending, by the PDN GW, a detach request message to a
non-3GPP GW of the source network after the PDN GW determines to detach the UE; or
if the network element on the network side is a serving GW of the source network,
5 sending, by the PDN GW, a binding revocation Ind message to the serving GW of the
source network, and sending, by the serving GW of the source network, a detach request
message to the MME of the source network after the serving GW of the source network
determines to detach the UE; and
receiving, by the MME of the source network or the non-3GPP GW of the source
10 network, the detach request message to detach the UE.
7. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 3, wherein the determining to detach the UE
from the source network further comprises:
if the network element on the network side is a home subscriber server (HSS),
15 before the HSS determines to detach the UE, the method further comprising:
sending, by a network element on the target network, a register request message
carrying a current access network type of the UE; and sending, by the HSS, a cancel
location to an MME of the source network or a non-3GPP GW of the source network when
the HSS determines that an access network type that the UE registers last time is
20 inconsistent with an access network type that the UE registers this time; and
detaching, by the MME of the source network or the non-3GPP GW of the source
network, the UE.
8. The method for user detachment when a handover or switching occurs in a
heterogeneous network according to claim 3, wherein the determining to detach the UE
25 from the source network further comprises:
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59
if the network element on the network side is an MME of the source network or a
non-3GPP GW of the source network, before the MME of the source network or the
non-3GPP GW of the source network determines to detach the UE, the method further
comprising:
5 sending, by the target network, a handover or change complete (HO Complete)
message to the MME of the source network or the non-3GPP GW of the source network.
9. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 4, wherein the determining to delete the default
bearer further comprises:
10 determining to delete the default bearer of the UE according to a handover or
change of the UE in an access network: determining whether the UE is handed over or
switched from the source network to the target network, if yes, deleting the default bearer of
the UE; or
determining to delete the default bearer of the UE according to the handover or
15 change of the UE in the access network and the terminal capability of the UE: determining
whether the UE is handed over or switched from the source network to the target network
and whether the terminal capability of the UE is the single radio capability, and if yes,
deleting the default bearer of the UE; or
determining to delete the default bearer of the UE according to the handover or
20 switching of the UE in the access network and the access policy information of the operator:
determining whether the UE is handed over or switched from the source network to the
target network and whether the access policy information of the operator is the single radio
access, and if yes, deleting the default bearer of the UE; or
determining to delete the default bearer of the UE according to the handover or
25 switching of the UE in the access network, the terminal capability of the UE, and the access
policy information of the operator: if the UE is handed over or switched from the source
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network to the target network, the terminal capability of the UE is the dual radio capability,
and the access policy information of the operator is the single radio access, or if the UE is
handed over or switched from the source network to the target network, the access policy
information of the operator is the dual radio access, and the terminal capability of the UE is
5 the single radio capability, or if the UE is handed over or switched from the source network
to the target network, the terminal capability of the UE is the single radio capability, and the
access policy information of the operator is the single radio access, deleting the default
bearer of the UE.
10. The method for user detachment when a handover or switching occurs in a
10 heterogeneous network according to any one of claims 3 to 9, wherein the obtaining the
terminal capability of the UE comprises:
carrying the terminal capability of the UE in an attach request message, a tracking
area update (TAU) request message, a routing area update (RAU) request message, or an
access request message when the UE sends the attach request message, the TAU request
15 message, the RAU request message, or the access request message to the network element
of the source network; and the network element of the source network is the MME of the
source network or the non-3GPP GW of the source network.
11. The method for user detachment when a handover or switching occurs in a
heterogeneous network according to any one of claims 3 to 9, wherein the obtaining the
20 terminal capability of the UE further comprises:
sending, by the MME of the source network, a create bearer request message
carrying the terminal capability of the UE to the serving GW of the source network; sending,
by the serving GW of the source network, the create bearer request message or a proxy
binding update message carrying the terminal capability of the UE to the PDN GW; or
25 sending, by the non-3GPP GW of the source network, a proxy binding update message
carrying the terminal capability of the UE to the PDN GW; or
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sending, by the MME of the source network or the non-3GPP GW of the source
network, an update location request message carrying the terminal capability of the UE to
the HSS.
12. The method for user detachment when a handover or switching occurs in a
5 heterogeneous network according to any one of claims 3 to 9, wherein the obtaining the
access policy of the operator further comprises:
notifying, by the MME of the source network, the configured access policy of the
operator to the UE or the HSS or the serving GW of the source network or the PDN GW; or
notifying, by the non-3GPP GW of the source network, the configured access
10 policy of the operator to the UE or the HSS or the PDN GW.
13. The method for user detachment when a handover or switching occurs in a
heterogeneous network according to any one of claims 3 to 9, wherein the obtaining the
access policy of the operator further comprises:
notifying, by the HSS, the configured access policy of the operator to the MME of
15 the source network and notifying, by the MME of the source network, the configured access
policy of the operator to the UE or the serving GW of the source network or the PDN GW;
Or
notifying, by the HSS, the configured access policy of the operator to the
non-3GPP GW of the source network and notifying, by the non-3GPP GW of the source
20 network, the configured access policy of the operator to the UE or the PDN GW; or
notifying, by a policy and charging rule function (PCRF) entity, the configured
access policy of the operator to the source network.
14. The method for user detachment when a handover or change occurs in a
heterogeneous network according to any one of claims 3 to 9, wherein the UE notifies the
25 terminal capability of the UE or the access policy of the operator to the source network
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when a location area of the UE changes and the terminal capability of the UE changes.
15. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 6, wherein the detach request message carries a
cause value indicating that the detach request is caused by the handover or switching of the
5 UE from the source network to the target network.
16. A method for user detachment when a handover or change occurs in a
heterogeneous network, comprising:
triggering, by a user equipment (UE), handover or switching from a source
network to a target network; and
10 determining, by the UE, whether to detach the UE from the source network; if yes,
detaching the UE from the source network; otherwise, not detaching the UE from the source
network.
17. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 16, further comprising:
15 sending, by the UE, a detach request message to a mobility management entity
(MME) of the source network or a non-3GPP gateway (non-3GPP GW) of the source
network; and
detaching, by the MME of the source network or the non-3GPP GW of the source
network, the UE, after the MME of the source network or the non-3GPP GW of the source
20 network receives the detach request message.
18. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 16, wherein after the UE is detached from the
source network, the method further comprises:
setting, by the MME of the source network, a state of the UE to an invalid state.
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19. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 16, wherein the determining, by the UE, whether
to detach the UE from the source network comprises:
deleting bearer resources and mobility management context (MM context) of the
5 source network when the UE knows that the UE is handed over or switched from the source
network to the target network; or
determining whether to detach the UE from the source network according to
terminal capability of the UE when the UE knows that the UE is handed over or switched
from the source network to the target network: if the terminal capability of the UE is single
10 radio capability, deleting bearer resources and MM context of the source network; or
determining whether to detach the UE from the source network according to
access policy information of an operator when the UE knows that the UE is handed over or
switched from the source network to the target network: if the access policy information of
the operator is single radio access, deleting bearer resources and MM context of the source
15 network; or
determining whether to detach the UE from the source network according to the
terminal capability of the UE and the access policy information of the operator when the
UE knows that the UE is handed over or switched from the source network to the target
network: if the terminal capability of the UE is dual radio capability and the access policy
20 information of the operator is the single radio access, or if the terminal capability of the UE
is single radio capability and the access policy information of the operator is dual radio
access, or if the terminal capability of the UE is the single radio capability and the access
policy information of the operator is the single radio access, deleting, by the UE, bearer
resources and MM context of the source network.
25 20. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 17, wherein before the UE sends the detach
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request message, the method further comprises: determining to send the detach request
message;
the determining to send the detach request message comprises:
determining to send the detach request message according to a handover or
5 switching of the UE in an access network: determining whether the UE is handed over or
switched from the source network to the target network; if yes, determining to send the
detach request message to the MME; or
determining to send the detach request message according to a handover or
switching of the UE in an access network and terminal capability of the UE: if the UE is
10 handed over or switched from the source network to the target network and the terminal
capability of the UE is single radio capability, sending the detach request message to the
MME; or
determining according to the handover or switching of the UE in the access
network and access policy information of the operator: if the UE is handed over or switched
15 from the source network to the target network and the access policy information of the
operator is the single radio access, sending the detach request message to the MME; or
determining to send the detach request message according to the handover or
switching of the UE in the access network, terminal capability of the UE, and access policy
information of the operator: if the UE is handed over or switched from the source network
20 to the target network, the terminal capability of the UE is dual radio capability, and the
access policy information of the operator is single radio access; or if the UE is handed over
or switched from the source network to the target network, the access policy information of
the operator is dual radio access, and the terminal capability of the UE is the single radio
capability; or if the UE is handed over or switched from the source network to the target
25 network, the terminal capability of the UE is the single radio capability, and the access
policy information of the operator is the single radio access, sending the detach request
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message to the MME.
21. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 17, wherein the detach request message carries a
cause value indicating that the detach request is caused by the handover or change of the
5 UE from the source network to the target network.
22. The method for user detachment when a handover or change occurs in a
heterogeneous network according to claim 18, wherein the setting the state of the UE to an
invalid state comprises:
deleting, by the MME of the source network, subscription data information of the
10 UE and MM context of the UE; or
setting, by the MME of the source network, a state of the MME used by the UE to
the invalid state; or
setting, by the MME of the source network, an address of the MME used by the
UE to an invalid value; or
15 setting, by the MME of the source network, a change flag location of the MME
used by the UE to a changed state.
23. A system for user detachment when a handover or change occurs in a
heterogeneous network, comprising a user equipment (UE) and a network side, wherein
the UE is adapted to be handed over or switched from a source network on the
20 network side to a target network on the network side; and
the network side is adapted to handover or changed the UE from the source
network to the target network and to detach the UE from the source network.
24. The system for user detachment when a handover or change occurs in a
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heterogeneous network according to claim 23, wherein the UE comprises a first handover
or change module and a first detachment module, and the network side comprises a second
handover or change module and a second detachment module;
the first handover or change module is adapted to enable the UE to be handed
5 over or switched from the source network to the target network;
the first detachment module is adapted to detach the UE from the source network;
the second handover or change module is adapted to enable the network side to
hand over or switch the UE from the source network to the target network; and
the second detachment module is adapted to enable the network side to detach the
10 UE from the source network.
25. A device for user detachment when a handover or change occurs in a
heterogeneous network, comprising a second handover or change module and a second
detachment module disposed on a network side; wherein
the second handover or change module is adapted to hand over or switch a user
15 equipment (UE) from a source network on the network side to a target network on the
network side; and
the second detachment module is adapted to detach the UE from the source
network.
26. The device for user detachment when a handover or change occurs in a
20 heterogeneous network according to claim 25, further comprising a second detachment
determination module adapted to determine whether to detach the UE from the source
network, wherein if yes, an initiating instruction is sent to the second detachment module to
initiate the second detachment module.
27. The device for user detachment when a handover or change occurs in a
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heterogeneous network according to claim 25, further comprising a module for receiving
terminal capability of the UE adapted to receive the terminal capability of the UE sent by
the UE.
28. The device for user detachment when a handover or change occurs in a
5 heterogeneous network according to claim 26, wherein the second detachment
determination module is disposed in a mobility management entity (MME), a packet data
network gateway (PDN GW), a serving Gateway (serving GW), a non-3GPP gateway
(non-3GPP GW), or a home subscriber server/authentication, authorization, and accounting
server (HS S/AAA server).
10 29. The device for user detachment when a handover or change occurs in a
heterogeneous network according to claim 25, further comprising a module for sending
access policy information of an operator adapted to send the access policy information of
the operator to the UE.
30. A device for user detachment when a handover or change occurs in a
15
heterogeneous network, comprising a first handover or change module and a first
detachment module disposed in a user equipment (UE); wherein
the first handover or change module is adapted to hand over or switch the UE
from a source network to a target network; and
the first detachment module is adapted to detach the UE from the source network.
20 31. The device for user detachment when a handover or change occurs in a
heterogeneous network according to claim 30, further comprising a first detachment
determination module adapted to determine whether to detach the UE from the source
network, wherein if yes, an initiating instruction is sent to the first detachment module to
initiate the first detachment module.
25 32. The device for user detachment when a handover or change occurs in a
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heterogeneous network according to claim 30, further comprising a module for sending
terminal capability of the UE adapted to sending the terminal capability of the UE to a
network side.
33. The device for user detachment when a handover or change occurs in a
5
heterogeneous network according to claim 30, further comprising a module for receiving
access policy information of an operator adapted to receive the access policy information of
the operator sent by a network side.
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ABSTRACT
A method for user detachment when a handover or change occurs in a heterogeneous
network is provided. The method includes: a user equipment (UE) is handed over or
switched from a source network to a target network; a network element on a network side
5 determines whether to detach the UE from the source network, and if yes, the network
element on the network side detaches the UE from the source network, otherwise, the
network element on the network side does not detach the UE from the source network. A
system and a device for user detachment when a handover or change occurs in a
heterogeneous network, and another method for user detachment when a handover or
10 change occurs in a heterogeneous network are also provided. The detachment solutions
achieve the detachment of the UE from the source network and the detachment of the UE
from the source network by the network side when the UE is handed over or switched from
the source network to the target network.
NSN677-1002, Page 145
70
1/10
FIG. 1
UE
MMNE
Non-3GPP Serving GW GW
201 Access the 3G1-1-' network ►
PDN GW
HSS/AAA Server
202 UE triggers the handover/
change
2034ccess Request ►
204 Access authentication process
205a Proxy Binding Update 0.
205b Binding Update
I 206a Proxy Binding Ack
206b Binding Ack
207 Access Accept
208 Delete Bearer Request
209 Delete Bearer Response ..-
FIG. 2
NSN677-1002, Page 146
UE
Nctwork element on the access
e 301 Attach Request
Servin g GW
PDN GW
isio 308 PCC Rules Pro
309 Create Bearer Response
.310a Reister
71
2/10
10. 302 Authentication process for the UE
303 Update Location
304Insert Subscription data '4
305 Update Location
I-Ack 306 Create Bea er Request
MMNE HSS/ AAA
Server
307 PCC Rules Request
310b Register 311 Attach Accept
312 Bearer establishment request
313 Radio Bearer establishment response
FIG. 4
PCR F
FIG. 3 ervin
H SS/AAA Server
MMNE PDN GW
UE
401TAU/RAU Request •
402 Update Location
403 Insert Subscription data
404 Update Location Ack
405 Update Bearerlftequest
4406a Register
406b Register
407 TAU/RAU Accept I
NSN677-1002, Page 147
72
3/10
UE
501Access Request
Non-3GPP GW
authentication
PDN GW
HSS/AAA Server
PCRF
0..
502 Access process
Request ►
503a Proxy Binding Update 0.
504 PCC Rules
503b Binding Update 1.-
506 PCC Rules Request
505 PCC Rules -4,
Provision
507 PCC Rules Provision
Proxy Binding Ack -4
508a
509 Register -4 N.
508b Binding Ack
511 Access Accept
510 Register -1.-
FIG. 5
NSN677-1002, Page 148
73
4/10
UE MMNE Non-3GPP
GW Serving
GW PDN GW
HSS/AAA Server
301 Access network
the 3GPP ..
602 UE the handover/
change
triggers
6033ccess Request
604 Access authentication process 0 4
605a Proxy Binding Update
605b Binding Update
606a Proxy Binding Ack ►
606b Binding Ack
607 Access Accept
608a Delete Bearer .41
Request
608b Delete Bearer Request .416 Binding Revocation
ilnd08b
609a Delete Bearer Response
509b Delete Bearer Response 609b Binding Revocation Ack .
610 Detach Request 4_ _ _ _ _
610 Detach Accept
.-
611 Purge
611 Purge
UE
UE Ack
Field Code Changed
FIG. 6
NSN677-1002, Page 149
74
5/10
UE MMNE Non-3GPP
GW Serving
GW PDN GW
HSS/AAA Server
701 Access network
the 3GPP •
702 UE the handover/
change
triggers
703\ccess Request
704 Access authentication process
705a Proxy Binding Updateo.
705b Binding Update
706a Proxy Binding Ack ►
706b Binding Ack .II
707 Access Accept
708a Delete Bearer Request
708b Delete Bearer Reque3 0 8 b Binding
. ndicat ion
Revocation
709a Delete Bearer Response
709b Delete Bearer ResporK9b •.
Binding Revocation ►
Ack
710 710
Purge UE Purge UE Ack
Field Code Changed
FIG. 7
NSN677-1002, Page 150
75
6/10
Field Code Changed UE
H SS/AAA Server MMNE
PDN GW
802 UE triggers the ha dover/
change
network
8033ccess Request
the 801 Access
Serving GW
3GPP
Non-3GPP GW
804 Access authentication process
805a Proxy Binding Update„.
05b Binding Update
806a Proxy Binding Ack
806b Binding Ack
807Access Accept -41 808a Detach Request
808b Detach Request
808c Detach Request 8 0 8c Binding Jindication
Revocation
809a Detach Response
809b Detach Response
809c Detach Response • 809c Binding F-revocation Ack
810 Delete Bearer Response
811 Purge UE
811 Purge UE Ack
FIG. 8
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76
7/10
UE Non-3GPP
GW PDN GW MMNE
901 Acc ss network
Serving GW
the 3GHP 0
HSS/AAA Server
Field Code Changed
902 UE triggers the ha dover/
change 903%ccess Recquest
904 Access authentication process
905a Proxy Binding Update,.
905b Binding Update
906a Proxy Binding Ack
906b Binding k 908 Register
Request 907 Access Accept
909 Register Response
910 Cancel Location
911 Cancel Location Ack
912 Purge UE
912 Purge UE Ack
913 Delete Bearer Response
FIG. 9
NSN677-1002, Page 152
8/10
FIG. 10
Field Code Changed Non-3GPP GW
Serving GW
HSS/AAA Server
UE MMNE PDN GW
1001 Access the 3GPP network 110.411
1002 UE triggers the handover
1003 HO Request
1004 Resource Create Procedure
1005 HO Response ..•
1006 HO Command -41
100Access Request
1008 Access Accept
1009 HO Compete ..•
1010 HO Complete Ack r
1011 Purge UE
1011 Purge UE Ack
1012 Delete Bearer Response
77
NSN677-1002, Page 153
9/11
FIG. 11
UE PDN GW MMNE
HSS/AAA Server
Non-3GPP Serving GW GW
1102 UE triggers the handover/
change 1103 Detach Request
1104 Delete Bearer Response
1105 Purge UE
1105 Purge UE Ack
1106 Detach Accept I
1107 Access Request
1108 Access Authentication
1109a Proxy Binding Update
1109b Binding Update
1110a Proxy Binding Ack
1110b Binding Ack
1111 Access Accept -411
1101 Access the 3GPP network 0
78
NSN677-1002, Page 154
Module for receiving access
policy information of operator
Module for sending terminal capability of UE
First handover module
First detachment module •
First detachment determination
module
UE
Second handover module
Second detachment
module •
Second detachment determination
module
Module for receiving terminal capability of UE
Module for sending access
policy information of operator
Network side
79
10/10
FIG. 12
NSN677-1002, Page 155
Docket No. HW708564
METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. Patent Application No. 12/479,216, filed on
Jun 5, 2009, which is a continuation of International Application No. PCT/CN2008/071842, filed
on July 31, 2008. The International Application claims priority to Chinese Patent Application
No. 200710137568.8, filed on August 7, 2007. The afore-mentioned patent applications are
hereby incorporated by reference in their entireties.
FIELD OF THE TECHNOLOGY
[0002] The present invention relates to the network communication technology and more
particularly to a method, system, and device for user detachment when a handover or change
occurs in a heterogeneous network.
BACKGROUND
[0003] To improve the competitiveness of networks in the future, a new evolution network is
now researched for a 3rd-generation partnership project (3GPP) network. FIG. 1 is a schematic
structural view of an evolution network system for a 3GPP network. The system includes: an
evolved UMTS terrestrial radio access network (E-UTRAN), for implementing all functions
related to the wireless feature of the evolution network; a mobility management entity (MME),
for mobility management of a control plane, including management of a user context and a
mobility state and allocation of temporary user identities; a serving gateway (serving GW) entity,
for acting as a user plane anchor point between access networks of the 3GPP network for
terminating the E-UTRAN; a packet data network gateway (PDN GW) entity, for acting as a user
anchor point between an access network of the 3GPP network and an access network of a
non-3GPP network, and an interface for terminating the external PDN; a policy and charging rule
function (PCRF) entity, for implementing functions of policy control decision and flow-based
charging control; and a home subscriber server (HSS), for storing subscription information of
1
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Docket No. HW708564
users.
[0004] The UMTS terrestrial radio access network (UTRAN) or GSM/EDGE radio access
network (GERAN) implements all functions relevant to the wireless feature of the existing
UMTS/GPRS network; a serving GPRS supporting node (SGSN) implements functions of route
forwarding, mobility management, session management, and user information storage in the
GPRS/UMTS network.
[0005] IP access networks of the non-3GPP network mainly include access networks defined
by non-3GPP network organizations, for example, wireless local area network (WLAN),
worldwide interoperability for microwave access (Wimax), and code division multiple access
(CDMA) network.
[0006] An authentication, authorization, and accounting server (AAA server) mainly
implements access authentication, authorization, and accounting for user equipment (UE).
[0007] It should be noted that, the schematic structural view of FIG. 1 is not the only
schematic structural view of the evolution network system for a 3GPP network. The evolution
network of a 3GPP network may have various structures.
[0008] One requirement on the evolution network of a 3GPP network is to realize the
handover or switching of the UE between a 3GPP network and a non-3GPP network. FIG. 2 is a
flow chart of a process that the UE is handed over or switched from a 3GPP network to a
non-3GPP network in the prior art. The process includes the following steps.
[0009] In Step 201, the UE accesses the 3GPP network through a serving GW and a PDN
GW.
[0010] In FIG. 2, the mobility management network element (MME) and the serving GW
belong to the 3GPP network, a non-3GPP GW belongs to the non-3GPP network, and the PDN
GW and HSS/AAA server are common network elements shared by the 3GPP network and the
non-3GPP network.
[0011] In Step 202, the UE triggers the handover or switching from the 3GPP network to the
non-3GPP network.
[0012] In Step 203, the UE sends an Access Request message to the non-3GPP GW, and
requests to access the non-3GPP GW.
[0013] As for a WLAN system, the non-3GPP GW in this step is an evolved packet data
2
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Docket No. HW708564
gateway (EPDG); as for a Wimax system, the non-3GPP GW in this step is an access service
network gateway (ASN GW); and as for a CDMA system, the non-3GPP GW is an access
gateway (AGW).
[0014] In Step 204, an access authentication process is performed between the UE, the
non-3GPP GW, and the HSS/AAA server, and the non-3GPP GW obtains the PDN GW address
information used by the UE.
[0015] In Step 205a, the non-3GPP GW sends a proxy binding update message to the PDN
GW.
[0016] In this step, it is assumed that an interface protocol between the non-3GPP GW and the
PDN GW is the proxy mobile internet protocol (PMIP). If an interface protocol between the UE
and the PDN GW is the client mobile internet protocol (CMIP), Step 205a is replaced by Step
205b, in which the UE sends a binding update message to the PDN GW.
[0017] In Step 206a, the PDN GW sends a proxy binding acknowledgement message to the
non-3GPP GW.
[0018] In this step, it is assumed that the interface protocol between the non-3GPP GW and
the PDN GW is the PMIP. If the interface protocol between the UE and the PDN GW is the
CMIP, Step 206a is replaced by Step 206b, in which the PDN GW sends a binding Ack message
to the UE.
[0019] In Step 207, the non-3GPP GW returns an access accept message to the UE.
[0020] In Step 208, the PDN GW sends a delete bearer request message to the serving GW,
and the serving GW sends the delete bearer request message to the MME.
[0021] In Step 209, the MME deletes bearer resources related to the UE, returns a delete
bearer response message to the serving GW, and the serving GW returns the delete bearer
response message to the PDN GW.
[0022] The above flow is a specific example of the process that the UE is handed over or
switched from a 3GPP network to a non-3GPP network. Certainly, the handover or change
process is not limited to the above descriptions. A 3GPP network involved in the handover or
change may be GERAN, UTRAN, or EUTRAN. A non-3GPP network involved in the handover
or change may be WLAN, Wimax, or CDMA system.
[0023] Once the UE accesses a 3GPP network, the 3GPP network creates bearer resources of
3
NSN677-1002, Page 158
Docket No. HW708564
the UE and a mobility management context of the UE. The mobility management context of the
UE exists in the MME. Furthermore, bearer resources of a 3GPP network and a mobility
management context of a 3GPP network are also created in the UE. Therefore, when the UE is
handed over or switched from a 3GPP network to a non-3GPP network, user detachment needs to
be performed to save network resources. The user detachment includes detachment of the 3GPP
network and detachment of the UE. The detachment of the 3GPP network indicates that the
3GPP network deletes the bearer resources of the UE and the mobility management context of
the UE, and the detachment of the UE indicates that the UE deletes the bearer resources of the
3GPP network and the mobility management context of the 3GPP network. Here, the mobility
management context of the UE exists in the MME.
[0024] However, in the process shown in FIG. 2, when the UE is handed over or switched
from a 3GPP network to a non-3GPP network, the 3GPP network merely deletes the bearer
resources of the UE, but does not delete the mobility management context of the UE, and
meanwhile, the UE does not delete the bearer resources and mobility management context of the
3GPP network as well.
[0025] As known from the above that, the prior art neither provides a method for 3GPP
network detachment when the UE is handed over or switched from a 3GPP network to a
non-3GPP network, nor provides a specific method for user detachment of the UE when the UE
is handed over or switched from a 3GPP network to a non-3GPP network. That is to say, no
specific solution for user detachment when handover or change occurs in a heterogeneous
network is provided in the prior art.
[0026] In addition, if the UE has a single radio capability, that is, the UE can access only one
network, after the UE is handed over or switched from a 3GPP network to a non-3GPP network,
user detachment needs to be performed, that is, the 3GPP network needs to detach the UE, and
the UE needs to be detached from the 3GPP network. The detaching, by the 3GPP network, the
UE includes that the 3GPP network deletes the bearer resources of the UE on the 3GPP network
side, and the mobility management context of the UE in the MME. The detaching, by the UE,
from the 3GPP network includes that the UE deletes the bearer resources and mobility
management context created when the UE accesses the 3GPP network.
[0027] If the UE has a dual radio capability, that is, the UE can access two networks at the
4
NSN677-1002, Page 159
Docket No. HW708564
same time, after the UE is handed over or switched from a 3GPP network to a non-3GPP
network, it is judged whether the 3GPP network needs to detach the UE according to, for
example, information of operator policies. In other words, the prior art does not provide a
solution for determining whether to perform the user detachment when the UE is handed over or
switched from a 3GPP network to a non-3GPP network.
[0028] To sum up, during researches and applications, the inventor(s) of the present invention
finds that the prior art has at least the following problems: the prior art neither provides a specific
solution for user detachment when a handover or change occurs in a heterogeneous network, nor
provides a solution for judging whether to perform user detachment when handover or change
occurs in a heterogeneous network.
SUMMARY
[0029] An embodiment of the present invention provides a method for detaching a user when
a handover or change occurs in a heterogeneous network.
[0030] An embodiment of the present invention further provides another method for detaching
a user when a handover or change occurs in a heterogeneous network.
[0031] An embodiment of the present invention provides a system for detaching a user when a
handover or change occurs in a heterogeneous network.
[0032] An embodiment of the present invention provides a device for detaching a user when a
handover or change occurs in a heterogeneous network.
[0033] An embodiment of the present invention further provides a device for detaching a user
when a handover or change occurs in a heterogeneous network.
[0034] A method for detaching a user when handover or change occurs in a heterogeneous
network includes the following steps.
[0035] First, a UE is handed over or switched from a source network to a target network.
[0036] Next, a network element on a network side determines whether to detach the UE from
the source network; if yes, the UE is detached from the source network.
[0037] Another method for user detachment when a handover or change occurs in a
heterogeneous network includes the following steps.
5
NSN677-1002, Page 160
Docket No. HW708564
[0038] First, a UE triggers handover or switching from a source network to a target network.
[0039] Next, the UE determines whether to be detached from the source network; if yes, the
UE is detached from the source network.
[0040] A system for user detachment when a handover or change occurs in a heterogeneous
network includes a UE and a network side.
[0041] The UE is adapted to be handed over or switched from a source network on the
network side to a target network on the network side.
[0042] The network side is adapted to hand over or switch the UE from the source network to
the target network, and detach the UE from the source network.
[0043] A device for detaching a user when a handover or change occurs in a heterogeneous
network includes a second handover or change module and a second detachment module on a
network side.
[0044] The second handover or switching module is adapted to hand over or switch a UE from
a source network on the network side to a target network on the network side.
[0045] The second detachment module is adapted to detach the UE from the source network.
[0046] A device for detaching a user when a handover or change occurs in a heterogeneous
network includes a first handover or change module and a first detachment module in a UE.
[0047] The first handover or change module is adapted to hand over or switch the UE from a
source network to a target network;
[0048] The first detachment module is adapted to detach the UE from the source network.
[0049] As known from the above solutions that, in the embodiments of the present invention,
when a handover or change occurs in the heterogeneous network, the UE is detached from the
source network after being determined by the source network or the UE is detached from the
source network after being determined by the UE. Thus, detachment of the user is realized by the
source network or the UE, when the handover or change occurs in the heterogeneous network.
BRIEF DESCRIPTION OF THE DRAWINGS
[0050] FIG. 1 is a schematic structural view of an evolution network system for a 3GPP
network in the prior art;
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Docket No. HW708564
[0051] FIG. 2 is a flow chart of a process that the UE is handed over or switched from a 3GPP
network to a non-3GPP network in the prior art;
[0052] FIG. 3 is a flow chart of a process that a network element in a 3GPP network acquires
terminal capability of UE and access policy information of an operator when the UE accesses the
3GPP network according to an embodiment of the present invention;
[0053] FIG. 4 is a flow chart of a process that a network element in a 3GPP network acquires
terminal capability of UE and access policy information of an operator when a location area or
terminal capability of the UE changes according to an embodiment of the present invention;
[0054] FIG. 5 is a flow chart of a process that a network element in a non-3GPP network
acquires terminal capability of UE and access policy information of an operator when the UE
accesses the non-3GPP network according to an embodiment of the present invention;
[0055] FIG. 6 shows a first example of a method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention;
[0056] FIG. 7 shows a second example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention;
[0057] FIG. 8 shows a third example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention;
[0058] FIG. 9 shows a fourth example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention;
[0059] FIG. 10 shows a fifth example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention;
[0060] FIG. 11 shows a sixth example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention;
and
[0061] FIG. 12 is a schematic structural view of a system for user detachment when a
handover or change occurs in a heterogeneous network according to an embodiment of the
present invention.
7
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Docket No. HW708564
DETAILED DESCRIPTION
[0062] To make the objectives, technical solutions, and beneficial effects of the present
invention more comprehensible, the present invention is described in detail below with reference
to the accompanying drawings and embodiments.
[0063] FIGS. 6-10 respectively show the first to fifth examples of a method for user
detachment when a handover or change occurs in a heterogeneous network according to an
embodiment of the present invention. The main ideas of the examples are described as follows:
[0064] The UE is handed over or switched from a source network to a target network; the
source network determines whether to detach the UE from the source network; if yes, the UE will
be detached from the source network; otherwise, the UE will not be detached from the source
network.
[0065] FIG. 11 shows a sixth example of a method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention.
The main idea of this example is described as follows.
[0066] The UE triggers a handover or switching from a source network to a target network;
the UE determines whether to be detached from the source network; if yes, the UE will be
detached from the source network; otherwise, the UE will not be detached from the source
network.
[0067] The two networks involved in the handover or change in the heterogeneous network
according to the embodiments of the present invention may be one of the 3GPP networks (such
as a GERAN network, a UTRAN network, or an EUTRAN network) and one of the non-3GPP
networks (such as a WLAN network, Wimax network, or CDMA network). Specifically, the
embodiments include the handover or switching of the UE from a 3GPP network to a non-3GPP
network or the handover or switching of the UE from a non-3GPP network to a 3GPP network.
Here, the network where the UE originally exists during the handover or change process is
referred to as the source network, and the other network involved in the handover or change
process is referred as the target network.
[0068] Then, the handover or switching from a 3GPP network to a non-3GPP network is taken
as an example to illustrate the first embodiment to the sixth embodiment of the method for UE
8
NSN677-1002, Page 163
Docket No. HW708564
detachment when a handover or change occurs in the heterogeneous network of the present
invention.
[0069] The UE and the network element in the 3GPP network acquire the terminal capability
of the UE, and the network element obtains access policy information of the operator, which are
provided for being used in the solution for UE detachment when the UE is handed over or
switched from the 3GPP network to the non-3GPP network according to the embodiments of the
present invention. Here, FIGS. 3 and 4 are used to illustrate the process that the network element
in a 3GPP network acquires the terminal capability of the UE and the access policy information
of the operator according to the embodiments of the present invention. FIG. 3 is a flow chart of a
process that a network element in a 3GPP network acquires terminal capability of UE and access
policy information of an operator when the UE accesses the 3GPP network. FIG. 4 is a flow chart
of a process that a network element in a 3GPP network acquires terminal capability of UE and
access policy information of an operator when a location area or terminal capability of the UE
changes after the UE accesses the 3GPP network according to an embodiment of the present
invention.
[0070] Referring to FIG. 3, the process that the network element in the 3GPP network acquires
the terminal capability of the UE and the access policy information of the operator when the UE
accesses the 3GPP network includes the following steps.
[0071] In step 301, the UE sends an attach request message carrying terminal capability of the
UE to the MME.
[0072] In this step, if the access network of the UE is GERAN/UTRAN, the SGSN serves as
the MME; if the access network of the UE is EUTRAN, the MME serves as the MME.
[0073] In this step, the terminal capability of the UE is represented by information element (IE)
of the radio capability supported by the UE. The radio capability supported by the UE is a single
radio capability (which indicates that the UE can access only one network at a certain time point)
or a dual radio capability (which indicates that the UE can access two or more networks at a
certain time point). An exemplary structure of the IE carrying the radio capability supported by
the UE is listed as follows. The IE includes a radio capability parameter supported by the UE.
The parameter may be: 1) the UE has a single radio capability; 2) the UE has a dual radio
capability.
9
NSN677-1002, Page 164
Docket No. HW708564
<UE Network Capability value part> ::=
UE Support Radio Capability
UE Support Radio Capability
0 Single Radio Capability
1 Dual Radio Capability
[0074] In step 302, the UE, the MME, and the HSS/AAA server implement an authentication
process of the UE to authenticate the UE.
[0075] In step 303, if the MME finds that the UE is in an invalid state, the MME sends an
update location message to the HSS/AAA server, and registers the UE with the HSS/AAA server.
The update location message carries the terminal capability of the UE.
[0076] In this step, if the access policy information of the operator is configured in the MME,
the update location request may carry the access policy information of the operator. The access
policy information of the operator includes: 1) a single radio access, that is, the UE can access
only one access network at a certain time point; and 2) a dual radio access, that is, the UE can
access a plurality of access networks at a certain time point.
[0077] In step 304, the HSS/AAA server inserts subscription data of a user into the MME.
[0078] In this step, if the access policy information of the operator is configured or subscribed
in the HSS/AAA server, the HSS/AAA server carries the access policy information of the
operator in the subscription data, and sends the subscription data to the MME.
[0079] In step 305, the HSS/AAA server returns an update location Ack message to the MME.
[0080] In Step 306, the MME sends a create bearer request message to the serving GW, and
the serving GW sends the create bearer request message to the PDN GW.
[0081] In this step, the MME initiates a default bearer establishment process, so as to create a
default bearer of the UE in the MME, serving GW, and PDN GW. The create bearer request
message further carries a bearer type IE. The MME uses the bearer type IE to notify the created
10
NSN677-1002, Page 165
Docket No. HW708564
bearer type to the serving GW and the PDN GW. If the MME sets the bearer type IE to default
bearer, the serving GW and the PDN GW are notified that the created bearer is a default bearer.
[0082] In this step, the terminal capability of the UE and the access policy information of the
operator are carried in the create bearer request message and sent to the serving GW and the PDN
GW.
[0083] Steps 307 and 308 are performed only when the policy and charging rules used by the
default bearer need to be obtained from the PCRF, and the access policy information of the
operator is configured in the PCRF.
[0084] In step 307, the PDN GW sends a PCC rules request message to the PCRF to obtain the
policy and charging rules used by the default bearer.
[0085] In step 308, the PCRF returns a PCC rules provision message to the PDN GW, and the
PCC rules provision message carries the access policy information of the operator.
[0086] In step 309, the PDN GW and the serving GW create a bearer context, and sets the
created bearer as the default bearer; the PDN GW returns a create bearer response message to the
serving GW, and the serving GW returns the create bearer response message to the MME.
[0087] If the access policy information of the operator is configured in the PCRF entity, or the
access policy information of the operator is configured in the PDN GW, or the access policy
information of the operator is configured in the serving GW, this step includes the following: the
create bearer response message carries the access policy information of the operator configured
by the PCRF, the PDN GW, or the serving GW.
[0088] In this step, the bearer context created by the PDN GW and the serving GW includes
bearer type information, which has two values: default bearer and dedicated bearer. For the
default bearer, the PDN GW and the serving GW set the bearer type information in the bearer
context to default bearer. The PDN GW and the serving GW may know that the created bearer is
a default bearer in the following two manners.
[0089] 1) In step 306, the MME carries the bearer type IE in the create bearer request message,
and notifies the bearer type to the serving GW and the PDN GW through the bearer type IE. If
the carried bearer type IE set by the MME is in the value of default bearer, the created bearer is
the default bearer.
[0090] 2) The serving GW and the PDN GW determine whether the created bearer is the first
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bearer created in the packet data network (PDN); if yes, the serving GW and the PDN GW
determine that the created bearer is a default bearer.
[0091] Other bearers are dedicated bearers. In this case, the serving GW and the PDN GW set
the bearer type information in the bearer context to dedicated bearer.
[0092] Step 310a is performed only when the access network type (RAT type) information in
the 3GPP network has been registered with the HSS/AAA server by the MME.
[0093] In step 310a, the MME registers access situations of the UE in the 3GPP network (for
example, the RAT type used by the UE) with the HSS/AAA server.
[0094] Step 310b is performed only when the RAT type information of the UE in the 3GPP
network has been registered with the HSS/AAA server by the PDN GW.
[0095] In step 310b, the PDN GW registers the access situations of the UE in the 3GPP
network (for example, the RAT type used by the UE) with the HSS/AAA server.
[0096] Through this step, the HSS/AAA server obtains the access network situations of the
UE. For example, in this embodiment, the HSS/AAA server knows that the RAT type of the UE
is a 3GPP network type, or a specific network type in a 3GPP network.
[0097] The RAT type of the UE includes the following two situations.
[0098] 1) The RAT type of the UE is categorized into a 3GPP network and a non-3GPP
network.
[0099] 2) The RAT type of the UE is a specific network type used by the UE, for example,
GERAN network, UTRAN network, EUTRAN network, WLAN network, Wimax network,
CDMA network, etc.
[0100] In Step 311, the MME returns an Attach Accept message to a network element on an
access side, and the Attach Accept message carries information of the radio bearer to be
established by the UE.
[0101] As for the EUTRAN access network, the network element on the access side is
ENodeB; as for the UTRAN access network, the network element on the access side is RNC; as
for the GERAN access network, the network element on the access side is BSS. The MME may
carry the access policy information of the operator in the Attach Accept message.
[0102] In step 312, the network element on the access side sends a bearer establishment
request message to the UE, and requests the UE to establish a radio bearer. The message carries
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the access policy information of the operator sent by the MME.
[0103] The access policy information of the operator may also be notified to the UE in a
broadcast message of a cell.
[0104] In step 313, the UE establishes the bearer context, sets the created bearer to a default
bearer, and returns a radio bearer establishment response message to the network element on the
access side.
[0105] The UE adds bearer type information to the established bearer context, and the bear
type has the following two values: default bearer and dedicated bearer. For the default bearer, the
UE sets the bearer type information in the bearer context to default bearer. The bearer type added
to the established bearer context by the UE may be acquired through the following manners.
[0106] 1) In step 311, the MME carries a bearer type IE in the Attach Accept message, and
notifies the bearer type to the UE by the network element on the access side through the bearer
type IE. For the default bearer, the value of the bearer type IE carried by the MME is Default
Bearer.
[0107] 2) The UE determines whether the created bearer is the first bearer created in the PDN;
if yes, the UE determines that the created bearer is a default bearer.
[0108] Other bearers are dedicated bearers. In this case, the UE sets the bearer type
information in the bearer context to dedicated bearer.
[0109] In this embodiment, it should be noted that, the HSS and the AAA server may be
configured in different entities or in a same entity. If the HSS and the AAA server are configured
in different entities, the register message sent by the PDN GW in step 310a is forwarded to the
HSS by the AAA server, and the register message sent by the MME in step 310b is forwarded to
the AAA server by the HSS.
[0110] FIG. 4 is a flow chart of a process that a network element in a 3GPP network acquires
terminal capability of UE and access policy information of an operator when a location area or
terminal capability of the UE changes. The process includes the following steps.
[0111] In step 401, the UE sends a tracking area update or routing area update request
(TAU/RAU request) message carrying changed terminal capability of the UE to the MME.
[0112] If the access network of the UE is GERAN/UTRAN, the message sent by the UE is the
RAU request message; if the access network of the UE is EUTRAN, the message sent by the UE
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is the TAU request message.
[0113] The terminal capability of the UE is represented by IEs of the radio capability
supported by the UE. The radio capability supported by the UE is a single radio capability (which
indicates that the UE can access only one network at a certain time point) or a dual radio
capability (which indicates that the UE can access two or more networks at a certain time point).
An exemplary structure of the IE carrying the radio capability supported by the UE is listed as
follows. The IE includes a radio capability parameter supported by the UE. The parameter may
be: 1) the UE has a single radio capability; 2) the UE has a dual radio capability.
<UE Network Capability value part> ::=
UE Support Radio Capability
UE Support Radio Capability 0 Single Radio Capability 1 Dual Radio Capability
[0114] In step 402, the MME sends an update location message to the HSS/AAA server, and
registers the UE with the HSS/AAA server, in which the update location message carries the
changed terminal capability of the UE.
[0115] In this step, if the access policy information of the operator is configured in the MME,
the update location request message carries the access policy information of the operator. The
access policy information of the operator includes: 1) a single radio access, that is, the UE can
access only one access network at a certain time point; and 2) a dual radio access, that is, the UE
can access a plurality of access networks at a certain time point.
[0116] In step 403, the HSS/AAA server inserts subscription data of a user into the MME.
[0117] In this step, if the access policy information of the operator is configured or subscribed
in the HSS/AAA server, the HSS/AAA server delivers the changed access policy information of
the operator to the MME.
[0118] In Step 404, the HSS/AAA server returns an update location Ack message to the
MME.
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[0119] In Step 405, when the MME determines that the access policy information of the
operator and the terminal capability of the UE has changed, the MME sends an update bearer
request message to the serving GW, and the serving GW sends the update bearer request message
to the PDN GW, in which the update bearer request message carries the changed access policy
information of the operator and the changed terminal capability of the UE.
[0120] In this step, the changed access policy information of the operator and the changed
terminal capability of the UE are notified to the serving GW and the PDN GW.
[0121] Step 406a is performed only when the RAT type information in the 3GPP network has
been registered with the HSS/AAA server by the MME and the information has changed.
[0122] In Step 406a, the MME registers the access situations of the UE in the 3GPP network
(for example, the RAT type used by the UE) with the HSS/AAA server.
[0123] Step 406b is performed only when the RAT type information in the 3GPP network has
been registered with the HSS/AAA server by the PDN GW and the information has changed.
[0124] In step 406b, if the RAT type information in the 3GPP network has been registered
with the HSS/AAA server by the PDN GW and the information has changed, the PDN GW
registers the access situations of the UE in the 3GPP network (for example, the RAT type used
by the UE) with the HSS/AAA server.
[0125] In step 407, the MME returns a TAU/RAU accept message to the UE, and the MME
may deliver the changed access policy information of the operator to the UE in the TAU/RAU
accept message.
[0126] The changed access policy information of the operator may also be notified to the UE
in a broadcast message of the cell.
[0127] FIG. 4 shows the process that the network element in a 3GPP network acquires the
changed terminal capability of the UE and the changed access policy information of the operator
when the terminal capability of the UE and the access policy information of the operator both
have changed. The process that the network element in the 3GPP network acquires the changed
terminal capability of the UE or the changed access policy information of the operator when the
terminal capability of the UE or the access policy information of the operator has changed is
similar to the process of FIG. 4, which thus is not described in detail here.
[0128] The UE and the network element in a non-3GPP network acquire the terminal
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capability of the UE, and the network element acquires the access policy information of the
operator, which are provided for being used in the solution for UE detachment when the UE is
handed over or switched from the non-3GPP network to a 3GPP network according to the
embodiments of the present invention. FIG. 5 is used to illustrate the process that the network
element in a non-3GPP network acquires the terminal capability of the UE and the access policy
information of the operator according to the embodiments of the present invention. FIG. 5 is a
flow chart of a process that a network element in a non-3GPP network acquires terminal
capability of UE and access policy information of an operator when the UE accesses the
non-3GPP network.
[0129] Referring to FIG. 5, the process that the network element in the non-3GPP network
acquires the terminal capability of the UE and the access policy information of the operator when
the UE accesses the non-3GPP network includes the following steps.
[0130] In step 501, the UE sends an access request message carrying the terminal capability of
the UE to a non-3GPP GW.
[0131] In this step, if the non-3GPP network is a WLAN network, the non-3GPP GW is an
EPDG; if the non-3GPP network is a Wimax network, the non-3GPP GW is an ASN GW; and if
the non-3GPP network is a CDMA network, the non-3GPP GW is an AGW.
[0132] In this step, the terminal capability of the UE is represented by IEs of the radio
capability supported by the UE. The radio capability supported by the UE is a single radio
capability (which indicates that the UE can access only one network at a certain time point) or a
dual radio capability (which indicates that the UE can access two or more networks at a certain
time point). An exemplary structure of the IE carrying the radio capability supported by the UE is
listed as follows. The IE includes a radio capability parameter supported by the UE. The
parameter may be: 1) the UE has a single radio capability; 2) the UE has a dual radio capability.
<UE Network Capability value part> ::=
UE Support Radio Capability
UE Support Radio Capability 0 Single Radio Capability 1 Dual Radio Capability
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[0133] In step 502, an authentication process is performed between the UE, the non-3GPP GW,
and the HSS/AAA server.
[0134] In this step, if the access policy information of the operator is configured in the
non-3GPP GW, an access authentication message may carry the access policy information of the
operator to the HSS/AAA server. The access policy information of the operator includes: 1) a
single radio access, that is, the UE can access only one access network at a certain time point;
and 2) a dual radio access, that is, the UE can access a plurality of access networks at a certain
time point. In this step, if the access policy information of the operator is configured in the
HSS/AAA server, the access authentication message may carry the access policy information of
the operator to the non-3GPP GW.
[0135] In step 503a, the non-3GPP GW sends a proxy binding update message to the PDN
GW.
[0136] In this step, it is assumed that an interface protocol between the non-3GPP GW and the
PDN GW is the proxy mobile internet protocol (PMIP). If an interface protocol between the UE
and the PDN GW is the client mobile internet protocol (CMIP), step 503a is replaced by step
503b, in which the UE sends a binding update message to the PDN GW.
[0137] In this step, the terminal capability of the UE and the access policy information of the
operator may be carried in the proxy binding update message or the binding update message and
sent to the PDN GW.
[0138] In step 504, if the policy and charging rules used by the UE need to be obtained from
the PCRF, the PDN GW sends a PCC rules request message to the PCRF to obtain the policy and
charging rules used by the UE.
[0139] In step 505, the PCRF provides a PCC rules provision message of the policy and
charging rules used by the UE to the PDN GW. If the access policy information of the operator is
configured in the PCRF, the PCRF transmits the access policy information of the operator to the
PDN GW via the PCC rules provision message.
[0140] In step 506, if the policy and charging rules used by the UE need to be obtained from
the PCRF, the non-3GPP GW sends a PCC rules request message to the PCRF to obtain the
policy and charging rules used by the UE.
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[0141] In step 507, the PCRF provides a PCC rules provision message of the policy and
charging rules used by the UE to the non-3GPP GW. If the access policy information of the
operator is configured in the PCRF, the PCRF transmits the access policy information of the
operator to the non-3GPP GW via the PCC rules provision message.
[0142] In step 508a, the PDN GW sends a proxy binding Ack message to the non-3GPP GW.
[0143] In this step, it is assumed that the interface protocol between the non-3GPP GW and
the PDN GW is the PMIP. If the interface protocol between the UE and the PDN GW is the
CMIP, step 508a is replaced by step 508b, in which the PDN GW sends a binding Ack message
to the UE.
[0144] In step 509, if the RAT type information in the non-3GPP network is registered with
the HSS/AAA server by the PDN GW, the PDN GW registers the access situations of the UE in
the non-3GPP network (for example, the RAT type used by the UE) with the HSS/AAA server.
[0145] In step 510, if the RAT type information in the non-3GPP network is registered with
the HSS/AAA server by the non-3GPP GW, the non-3GPP GW registers the access situations of
the UE in the non-3GPP network (for example, the RAT type used by the UE) with the
HSS/AAA server.
[0146] Through step 509 or step 510, the HSS/AAA server obtains the access network
situations of the UE. For example, in this embodiment, the HSS/AAA server knows that the RAT
type of the UE is a non-3GPP network type, or a specific network type in the non-3GPP network.
This step is optional.
[0147] The RAT type used by the UE may be processed through the following two manners.
[0148] 1) The RAT type used by the UE is categorized into a 3GPP network and a non-3GPP
network.
[0149] 2) The RAT type used by the UE is a specific network type used by the UE, for
example, a GERAN network, a UTRAN network, an EUTRAN network, a WLAN network,
Wimax network, or a CDMA network.
[0150] In step 511, the non-3GPP GW returns an access accept message to the UE. The
non-3GPP GW may carry the access policy information of the operator in the access accept
message.
[0151] In this embodiment, it should be noted that, the HSS and the AAA server may be
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configured in different entities or in the same entity. If the HSS and the AAA server are
configured in different entities, the register message sent by the PDN GW in step 509 is
forwarded to the HSS by the AAA server, and the register message sent by the non-3GPP GW in
Step 510 is forwarded to the AAA server by the HSS.
[0152] FIG. 6 shows a first example of a method for detaching a user when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention.
The method includes the following steps.
[0153] Steps 601-607 are the same as steps 201-207 in FIG. 2.
[0154] In step 608a, the PDN GW sends a delete bearer request message to the serving GW,
and then the serving GW sends the received delete bearer request message to the MME, and adds
a cause IE in the delete bearer request message to indicate the reason of the deletion, and the
MME deletes the bearer resources.
[0155] In this step, as for the bearer deletion caused by the handover or switching of the UE
from the 3GPP network to the non-3GPP network, the PDN GW sets the cause IE as "UE's
accessing RAT changed from a 3GPP network to a non-3GPP network". As for the bearer
deletion that is not caused by the handover or change, the PDN GW sets the cause IE to other
values. Alternatively, the delete bearer request message sent by the PDN GW does not carry the
cause IE, and in this case, once the MME receives the delete bearer request message sent by the
serving GW, the message is defaulted to be caused by the handover or switching of the UE from
the 3GPP network to the non-3GPP network. In this embodiment, the message carrying the cause
IE is taken as an example.
[0156] In this step, it is assumed that an interface protocol between the PDN GW and the
serving GW is GPRS tunneling protocol (GTP). If the interface protocol between the PDN GW
and the serving GW is the PMIP, step 608a is replaced by step 608b, in which the PDN GW
sends a binding revocation indication message to the serving GW; the cause IE is added to the
binding revocation indication message; the serving GW sends the delete bearer request message
carrying the cause IE sent by the PDN GW to the MME; and the MME deletes the bearer
resources after receiving the delete bearer request message.
[0157] As for the binding revocation indication caused by the handover or switching of the UE
from the 3GPP network to the non-3GPP network, the PDN GW sets the cause IE as "UE's
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accessing RAT changed from a 3GPP network to a non-3GPP network". As for the bearer
deletion that is not caused by the handover or change, the PDN GW sets the cause IE to other
values. Alternatively, the binding revocation indication message sent by the PDN GW does not
carry the cause IE, and in this case, once the MME receives the delete bearer request message
sent by the serving GW, the message is default to be caused by the handover or switching of the
UE from the 3GPP network to the non-3GPP network. In this embodiment, the message carrying
the cause IE is taken as an example.
[0158] Step 608a or step 608b further includes the following: the MME deletes the bearer
resources after receiving the delete bearer request message. If the MME finds that all bearer
resources of the UE are deleted, the MME further determines whether to delete an MM context
(i.e., detaching the UE from the 3GPP network) and whether to send a detach request message to
the UE. Specifically, the process includes the following circumstances.
[0159] 1) The MME makes the following determination according to the cause IE carried in
the delete bearer request. The MME determines whether the cause IE carried in the received
delete bearer request message is represented as "UE's accessing RAT changed from a 3GPP
network to a non-3GPP network"; if yes, the MME deletes the MM context of the UE, and does
not send the detach request message to the UE; otherwise, the MME sends the detach request
message to the UE and notifies the UE to delete the MM context and the bearer resources of the
3GPP network in the UE.
[0160] 2) The MME makes the following determination according to the IE carried in the
delete bearer request and the terminal capability of the UE. If the MME determines that the IE
carried in the received delete bearer request message is represented as "UE's accessing RAT
changed from a 3GPP network to a non-3GPP network", and the MME knows that the terminal
capability of the UE is "single radio capability", the MME deletes the MM context of the UE, and
does not send the detach request message to the UE; as for the bearer deletion caused by other
reasons, the MME deletes the MM context of the UE, and sends the detach request message to
the UE. If the MME knows that the terminal capability of the UE is "multi radio capability", the
MME does not delete the MM context of the UE (that is, does not detach the UE from the 3GPP
network).
[0161] 3) The MME makes the following determination according to the IE carried in the
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delete bearer request and the access policy information of the operator. If the MME determines
that the IE carried in the received delete bearer request message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-3GPP network", and the MME knows that the
access policy information of the operator is "single radio access", the MME deletes the MM
context of the UE, and does not send the detach request message to the UE; as for the bearer
deletion caused by other reasons, the MME deletes the MM context of the UE, and sends the
detach request message to the UE. If the MME knows that the access policy information of the
operator is "multi radio access", the MME does not delete the MM context of the UE (that is,
does not detach the UE from the 3GPP network).
[0162] 4) The MME makes the following determination according to the IE carried in the
delete bearer request, the terminal capability of the UE, and the access policy information of the
operator. If the MME determines that the IE carried in the received delete bearer request message
is represented as "UE's accessing RAT changed from a 3GPP network to a non-3GPP network",
the terminal capability of the UE is "dual radio capability", and the access policy information of
the operator is "single radio access", or if the MME determines that the IE carried in the received
delete bearer request message is represented as "UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", the access policy information of the operator is "multi radio
access", and the terminal capability of the UE is "single radio capability", or if the MME
determines that the IE carried in the received delete bearer request message is represented as
"UE's accessing RAT changed from a 3GPP network to a non-3GPP network", the terminal
capability of the UE is "single radio capability", and the access policy information of the operator
is "single radio access", the MME deletes the MM context of the UE, and does not send the
detach request message to the UE; as for the bearer deletion caused by other reasons, the MME
deletes the MM context of the UE, and sends the detach request message to the UE. If the MME
knows that the terminal capability of the UE is "dual radio capability" and the access policy
information of the operator is "multi radio access", the MME does not delete the MM context of
the UE (that is, does not detach the UE from the 3GPP network).
[0163] In step 609a, the MME returns a delete bearer response message to the serving GW,
and the serving GW returns the delete bearer response message to the PDN GW.
[0164] In this step, the interface protocol between the PDN GW and the serving GW is the
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GIP, and if the interface protocol between the PDN GW and the serving GW is the PMIP, Step
609a is replaced by step 609b, in which the MME returns the delete bearer response message to
the serving GW, and the serving GW returns a binding revocation Ack message to the PDN GW.
[0165] In step 610, if the MME sends the detach request message to the UE, the UE deletes
the MM context and the bearer resources after receiving the detach request message, and returns
a Detach Accept message to the MME.
[0166] In step 611, if the MME finds that the subscription data and the MM context of the UE
are deleted, the MME sends a purge UE message to the HSS/AAA server, and the HSS/AAA
server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0167] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0168] In the above embodiment, after step 607, it is determined whether to detach the UE
from the 3GPP network. Specifically, the determination process is described as follows:
according to the handover or change in the access network, or according to the handover or
change of the UE in the access network and the terminal capability of the UE, or according to the
handover or change of the UE in the access network and the access policy information of the
operator, or according to the handover or change of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator, it is determined whether
to detach the UE from the 3GPP network, which particularly includes the following four
circumstances.
[0169] 1) It is determined whether the UE is handed over or switched from the 3GPP network
to the non-3GPP network; if yes, the MM context and bearer resources used by the UE in the
3GPP network are deleted.
[0170] 2) It is determined whether the UE is handed over or switched from the 3GPP network
to the non-3GPP network and whether the terminal capability of the UE is "single radio
capability"; if yes, the bearer resources and the MM context used by the UE in the 3GPP network
are deleted.
[0171] 3) It is determined whether the UE is handed over or switched from the 3GPP network
to the non-3GPP network and whether the access policy information of the operator is "single
radio access"; if yes, the bearer resources and the MM context used by the UE in the 3GPP
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network are deleted.
[0172] 4) It is determined whether the handover or change of the UE in the access network,
the terminal capability of the UE, and the access policy information of the operator satisfy one of
the following three conditions: 1. the UE is handed over or switched from the 3GPP network to
the non-3GPP network, the terminal capability of the UE is "dual radio capability", and the
access policy information of the operator is "single radio access"; 2. the UE is handed over or
switched from the 3GPP network to the non-3GPP network, the access policy information of the
operator is "multi radio access", and the terminal capability of the UE is "single radio capability";
and 3. the UE is handed over or switched from the 3GPP network to the non-3GPP network, the
terminal capability of the UE is "single radio capability", and the access policy information of the
operator is "single radio access".
[0173] If yes, the bearer resources and the MM context used by the UE in the 3GPP network
are deleted.
[0174] Moreover, the delete bearer request added with the cause IE in step 608 may be
replaced by another message, for example, replaced by a release bearer request message. The
release bearer request message indicates that the reason for deleting the bearer is the handover or
switching of the UE from the 3GPP network to the non-3GPP network; alternatively, the delete
bearer request message sent in step 608 does not carry the reason for deleting the bearer, and
when the UE is handed over or switched from the 3GPP network to the non-3GPP network, a
normal delete bearer request is sent to the MME. In step 608, after receiving the specific message
or the normal delete bearer request message, the MME deletes the bearer resources; and the
operations of the MME after the bearer resources are deleted are similar to the operations of the
MME after receiving the delete bearer request message.
[0175] As for the first embodiment, it should be noted that the detachment method in this
embodiment is also applicable to the handover or switching of the UE from a non-3GPP network
to a 3GPP network.
[0176] In step I, after the UE is handed over or switched to a 3GPP network, the PDN GW
sends the binding revocation indication message to a non-3GPP GW. The message carries the
cause IE indicating the reason for the binding revocation. As for the binding revocation caused by
the handover or switching from the non-3GPP network to the 3GPP network, the PDN GW sets
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the cause IE as "UE's accessing RAT changed from a non-3GPP network to a 3GPP network";
and as for the binding revocation that is not caused by the handover or change, the PDN GW sets
the cause IE to other values.
[0177] In step II, the non-3GPP GW deletes the bearer resources after receiving the binding
revocation indication message. If the non-3GPP GW finds that all bearer resources of the UE are
deleted, the non-3GPP GW further determines whether to delete the MM context of the UE (that
is, to detach the UE from the non-3GPP network), which specifically includes the following
circumstances.
[0178] 1) The non-3GPP GW makes the following determination according to the Cause IE
carried in the binding revocation indication message, in which the non-3GPP GW determines
whether the cause IE carried in the binding revocation indication message is represented as "UE's
accessing RAT changed from a non-3GPP network to a 3GPP network"; if yes, the non-3GPP
GW deletes the MM context of the UE, and does not send the detach request message to the UE;
otherwise, the non-3GPP GW sends the detach request message to the UE, and notifies the UE to
delete the MM context and bearer resources of the non-3GPP network in the UE.
[0179] 2) The non-3GPP GW makes the following determination according to the IE carried
in the binding revocation indication message and the terminal capability of the UE, in which if
the non-3GPP GW determines that the IE carried in the received binding revocation indication
message is represented as "UE's accessing RAT changed from a non-3GPP network to a 3GPP
network", and the non-3GPP GW knows that the terminal capability of the UE is "single radio
capability", the non-3GPP GW deletes the MM context of the UE, and does not send the detach
request message to the UE; as for the bearer deletion caused by other reasons, the non-3GPP GW
deletes the MM context of the UE, and sends the detach request message to the UE. If the
non-3GPP GW knows that the terminal capability of the UE is "multi radio capability", the
non-3GPP GW does not delete the MM context of the UE (that is, does not detach the UE from
the non-3GPP network).
[0180] 3) The non-3GPP GW makes the following determination according to the IE carried
in the binding revocation indication message and the access policy information of the operator, in
which if the non-3GPP GW determines that the IE carried in the received binding revocation
indication message is represented as "UE's accessing RAT changed from a non-3GPP network to
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a 3GPP network", and the non-3GPP GW knows that the access policy information of the
operator is "single radio access", the non-3GPP GW deletes the MM context of the UE, and does
not send the detach request message to the UE; as for the bearer deletion caused by other reasons,
the non-3GPP GW deletes the MM context of the UE, and sends the detach request message to
the UE. If the non-3GPP GW knows that the access policy information of the operator is "multi
radio access", the non-3GPP GW does not delete the MM context of the UE (that is, does not
detach the UE from the non-3GPP network).
[0181] 4) The non-3GPP GW makes the following determination according to the IE carried
in the binding revocation indication message, the terminal capability of the UE, and the access
policy information of the operator, in which if the non-3GPP GW determines that the IE carried
in the received binding revocation indication message is represented as "UE's accessing RAT
changed from a non-3GPP network to a 3GPP network", the terminal capability of the UE is
"dual radio capability", and the access policy information of the operator is "single radio access",
or if the non-3GPP GW determines that the IE carried in the received binding revocation
indication message is represented as "UE's accessing RAT changed from a non-3GPP network to
a 3GPP network", the access policy information of the operator is "multi radio access", and the
terminal capability of the UE is "single radio capability", or if the non-3GPP GW determines that
the IE carried in the received binding revocation indication message is represented as "UE's
accessing RAT changed from a non-3GPP network to a 3GPP network", the terminal capability
of the UE is "single radio capability", and the access policy information of the operator is "single
radio access", the non-3GPP GW deletes the MM context of the UE, and does not send the
detach request message to the UE; as for the bearer deletion caused by other reasons, the
non-3GPP GW deletes the MM context of the UE, and sends the detach request message to the
UE. If the non-3GPP GW knows that the terminal capability of the UE is "dual radio capability",
and the access policy information of the operator is "multi radio access", the non-3GPP GW does
not delete the MM context of the UE (that is, does not detach the UE from the non-3GPP
network).
[0182] FIG. 7 shows a second example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention.
The method includes the following steps.
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[0183] Steps 701-707 are the same as steps 201-207 in FIG. 2.
[0184] In step 708a, the PDN GW determines whether to delete the default bearer of the UE; if
yes, the PDN GW sends the delete bearer request message corresponding to the default bearer to
the serving GW, and the serving GW sends the received delete bearer request message to the
MME.
[0185] The default bearer is a part of the bearer resources.
[0186] In this step, the interface protocol between the PDN GW and the serving GW is the
GTP. If the interface protocol between the PDN GW and the serving GW is the PMIP, step 708a
is replaced by step 708b, in which the PDN GW sends the binding revocation indication message
to the serving GW, and the serving GW determines whether to delete the default bearer of the UE;
if yes, the serving GW sends the delete bearer request message corresponding to the default
bearer to the MME, and the MME deletes the MM context and the bearer resources.
[0187] In step 708a or 708b, the PDN GW/serving GW determines whether to delete the
default bearer of the UE in the following manners. The PDN GW/serving GW determines
whether to delete the default bearer of the UE according to the handover or change of the UE in
the access network, or according to the handover or change of the UE in the access network and
the terminal capability of the UE, or according to the handover or change of the UE in the access
network and the access policy information of the operator, or according to the handover or
change of the UE in the access network, the terminal capability of the UE, and the access policy
information of the operator. The terminal capability of the UE and the access policy information
of the operator are obtained by the network elements according to the flows shown in FIGS. 3
and 4. Specifically, the determination process includes the following circumstances.
[0188] 1) The PDN GW/serving GW determines whether to delete the default bearer of the
UE according to the handover or change of the UE in the access network, in which the PDN
GW/serving GW determines whether the UE is handed over or switched from the 3GPP network
to the non-3GPP network; if yes, the PDN GW/serving GW determines to delete the default
bearer of the UE, and sends the delete bearer request message corresponding to the default bearer
to the MME.
[0189] 2) The PDN GW/serving GW determines whether to delete the default bearer of the
UE according to the handover or change of the UE in the access network and the terminal
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capability of the UE, in which the PDN GW/serving GW determines whether the UE is handed
over or switched from the 3GPP network to the non-3GPP network and whether the terminal
capability of the UE is "single radio capability"; if yes, the PDN GW/serving GW determines to
delete the default bearer of the UE, and sends the delete bearer request message corresponding to
the default bearer to the MME.
[0190] 3) The PDN GW/serving GW determines whether to delete the default bearer of the
UE according to the handover or change of the UE in the access network and the access policy
information of the operator, in which the PDN GW/serving GW determines whether the UE is
handed over or switched from the 3GPP network to the non-3GPP network and whether the
access policy information of the operator is "single radio access"; if yes, the PDN GW/serving
GW determines to delete the default bearer of the UE, and sends the delete bearer request
message corresponding to the default bearer to the MME.
[0191] 4) The PDN GW/serving GW determines whether to delete the default bearer of the
UE according to the handover or change of the UE in the access network, the terminal capability
of the UE, and the access policy information of the operator, in which the PDN GW/serving GW
determines whether the handover or change of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator satisfy one of the
following three conditions: 1. the UE is handed over or switched from the 3GPP network to the
non-3GPP network, the terminal capability of the UE is "dual radio capability", and the access
policy information of the operator is "single radio access"; 2. the UE is handed over or switched
from the 3GPP network to the non-3GPP network, the access policy information of the operator
is "multi radio access", and the terminal capability of the UE is "single radio capability"; and 3.
the UE is handed over or switched from the 3GPP network to the non-3GPP network, the
terminal capability of the UE is "single radio capability", and the access policy information of the
operator is "single radio access".
[0192] If yes, the PDN GW/serving GW determines to delete the default bearer of the UE, and
sends the delete bearer request message corresponding to the default bearer to the MME.
[0193] In step 709a, the MME returns a delete bearer response message to the serving GW,
and the serving GW returns the delete bearer response message to the PDN GW.
[0194] In this step, the interface protocol between the PDN GW and the serving GW is the
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GTP. If the interface protocol between the PDN GW and the serving GW is the PMIP, step 709a
is replaced by step 709b, in which the MME returns the delete bearer response message to the
serving GW, and the serving GW returns the binding revocation Ack message to the PDN GW.
[0195] In step 710, if the MME finds that the default bearer of the UE is deleted, the MME
deletes the MM context of the UE (that is, the MME detaches the UE from the 3GPP network).
[0196] If the MME finds that the subscription data and the MM context of the UE are deleted,
the MME sends a purge UE message to the HSS/AAA server, and the HSS/AAA server purges
the record of the UE, and returns a purge UE Ack message to the MME.
[0197] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0198] Step 709 and step 710 may be performed at any order.
[0199] In the above embodiment, the UE is detached after step 707. The detachment process is
as follows: according to the handover or change of the UE in the access network, or according to
the handover or change of the UE in the access network and the terminal capability of the UE, or
according to the handover or change of the UE in the access network and the access policy
information of the operator, or according to the handover or change of the UE in the access
network, the terminal capability of the UE, and the access policy information of the operator, the
UE determines whether to perform the detachment, which specifically includes the following
four circumstances.
[0200] 1) It is determined whether the UE is handed over or switched from the 3GPP network
to the non-3GPP network; if yes, the UE also deletes the default bearer, and deletes the MM
context and bearer resources used by the UE in the 3GPP network (that is, the UE is detached
from the 3GPP network); otherwise, the UE does not delete the default bearer, and does not
delete the MM context used by the UE in the 3GPP network.
[0201] 2) It is determined whether the UE is handed over or switched from the 3GPP network
to the non-3GPP network and whether the terminal capability of the UE is "single radio
capability"; if yes, the UE also deletes the default bearer, and deletes the MM context and bearer
resources used by the UE in the 3GPP network (that is, the UE is detached from the 3GPP
network); otherwise, the UE does not delete the default bearer, and does not delete the MM
context used by the UE in the 3GPP network.
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[0202] 3) It is determined whether the UE is handed over or switched from the 3GPP network
to the non-3GPP network and whether the access policy information of the operator is "single
radio access" ; if yes, the UE also deletes the default bearer, and deletes the MM context and
bearer resources used by the UE in the 3GPP network (that is, the UE is detached from the 3GPP
network); otherwise, the UE does not delete the default bearer, and does not delete the MM
context used by the UE in the 3GPP network.
[0203] 4) It is determined whether the handover or change of the UE in the access network,
the terminal capability of the UE, and the access policy information of the operator satisfy one of
the following three conditions: 1. the UE is handed over or switched from the 3GPP network to
the non-3GPP network, the terminal capability of the UE is "dual radio capability", and the
access policy information of the operator is "single radio access"; 2. the UE is handed over or
switched from the 3GPP network to the non-3GPP network, the access policy information of the
operator is "multi radio access", and the terminal capability of the UE is "single radio capability";
and 3. the UE is handed over or switched from the 3GPP network to the non-3GPP network, the
terminal capability of the UE is "single radio capability", and the access policy information of the
operator is "single radio access".
[0204] If yes, the UE deletes the default bearer, and deletes the MM context and bearer
resources used by the UE in the 3GPP network (that is, the UE is detached from the 3GPP
network); otherwise, the UE does not delete the default bearer, and does not delete the MM
context used by the UE in the 3GPP network.
[0205] FIG. 8 shows a third example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention.
The method includes the following steps.
[0206] Steps 801-807 are the same as steps 201-207 in FIG. 2.
[0207] In step 808a, the PDN GW sends a detach request message to the MME through the
serving GW, and the detach request message carries a cause value represented as "detach because
of UE's accessing RAT changed from a 3GPP network to a non-3GPP network", which indicates
that the detach request message is caused by the handover or switching of the UE from the 3GPP
network to the non-3GPP network.
[0208] In this step, no interface exists between the PDN GW and the MME. If an interface
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exists between the PDN GW and the MME, step 808a is replaced by step 808b, in which the
PDN GW sends a Detach Request message to the MME, and the Detach Request message carries
a Cause value represented as "Detach because of UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", indicating that the detach request message is caused by the
handover or change of the UE from the 3GPP network to the non-3GPP network.
[0209] If the interface protocol between the PDN GW and the MME is the PMIP, step 808a is
replaced by step 808c, in which the PDN GW sends a binding revocation Ind message to the
serving GW, and the serving GW sends the detach request message to the MME, and the detach
request message carries a cause value represented as "detach because of UE's accessing RAT
changed from a 3GPP network to a non-3GPP network", indicating that the detach request
message is caused by the handover or change of the UE from the 3GPP network to the non-3GPP
network.
[0210] In step 808a, 808b, or 808c, before the detach request message is sent, the process
further includes determining whether to send the detach request message according to the
handover or change of the UE in the access network, or according to the handover or change of
the UE in the access network and the terminal capability of the UE, or according to the handover
or change of the UE in the access network and the access policy information of the operator, or
according to the handover or change of the UE in the access network, the terminal capability of
the UE, and the access policy information of the operator; if yes, the detach request message is
sent to the MME; otherwise, the process ends. In steps 808a and 808b, the determination is
performed by the PDN GW, and in step 808c, the determination is performed by the serving GW.
Whether to send the detach request message may be determined according to the following
circumstances.
[0211] 1) The PDN GW/serving GW determines whether to send the detach request message
to the MME according to the handover or change of the UE in the access network, in which the
PDN GW/serving GW determines whether the UE is handed over from the 3GPP network to the
non-3GPP network; if yes, the detach request message is sent to the MME; otherwise, the process
ends.
[0212] 2) The PDN GW/serving GW determines whether to send the detach request message
to the MME according to the handover or change of the UE in the access network and the
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terminal capability of the UE, in which the PDN GW/serving GW determines whether the UE is
handed over or switched from the 3GPP network to the non-3GPP network and whether the
terminal capability of the UE is "single radio capability"; if yes, the detach request message is
sent to the MME; otherwise, the process ends.
[0213] 3) The PDN GW/serving GW determines whether to send the detach request message
to the MME according to the handover or change of the UE in the access network and the access
policy information of the operator, in which the PDN GW/serving GW determines whether the
UE is handed over or switched from the 3GPP network to the non-3GPP network and whether
the access policy information of the operator is "single radio access"; if yes, the detach request
message is sent to the MME; otherwise, the process ends.
[0214] 4) The PDN GW/serving GW determines whether to send the detach request message
to the MME according to the handover or change of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator, in which the PDN
GW/serving GW determines whether the handover or change of the UE in the access network,
the terminal capability of the UE, and the access policy information of the operator satisfy one of
the following three conditions: 1. the UE is handed over or switched from the 3GPP network to
the non-3GPP network, the terminal capability of the UE is "dual radio capability", and the
access policy information of the operator is "single radio access"; 2. the UE is handed over or
switched from the 3GPP network to the non-3GPP network, the access policy information of the
operator is "multi radio access", and the terminal capability of the UE is "single radio capability";
and 3. the UE is handed over or switched from the 3GPP network to the non-3GPP network, the
terminal capability of the UE is "single radio capability", and the access policy information of the
operator is "single radio access".
[0215] If yes, the detach request message is sent to the MME; otherwise, the process ends.
[0216] In step 809a, the MME receives the detach request message, deletes the MM context,
and sends a detach response message to the PDN GW through the serving GW.
[0217] In this step, no interface exists between the PDN GW and the MME. If an interface
exists between the PDN GW and the MME, step 809a is replaced by step 809b, in which the
MME receives the detach request message, deletes the MM context, and directly sends a detach
response message to the PDN GW.
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[0218] If the interface protocol between the PDN GW and the MME is the PMIP, step 809a is
replaced by step 809c, in which the PDN GW sends the detach response message to the serving
GW, and the serving GW returns a binding revocation Ack message to the PDN GW.
[0219] In step 810, the MME initiates a bearer deletion process to delete the bearer resources
used by the UE on the 3GPP network side (including the MME, serving GW, and PDN GW).
[0220] In step 811, if the MME finds that the subscription data and the MM context of the UE
are deleted, the MME sends a purge UE message to the HSS/AAA server, and then the
HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0221] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0222] Step 809 and Step 811 may be performed at any order.
[0223] In this embodiment, the UE is detached after step 807, and the detailed process thereof
can be known with reference to the descriptions of the third example of the method for user
detachment.
[0224] In this embodiment, it should be noted that, the detach request message sent by the
PDN GW or serving GW may not carry the cause value.
[0225] In this embodiment, it should be noted that, the method in this embodiment is also
applicable to the handover or switching of the UE from the non-3GPP network to the 3GPP
network.
[0226] After the UE is handed over or switched from the non-3GPP network to the 3GPP
network, the PDN GW determines whether to detach the UE from the non-3GPP network and
whether to send the detach request message to the non-3GPP GW, which includes determining
whether to send the detach request message according to the handover or change of the UE in the
access network, or according to the handover or change of the UE in the access network and the
terminal capability of the UE, or according to the handover or change of the UE in the access
network and the access policy information of the operator, or according to the handover or
change of the UE in the access network, the terminal capability of the UE, and the access policy
information of the operator; if yes, the detach request message is sent to the non-3GPP GW. The
detailed process thereof can be known with reference to the descriptions of the above
embodiment.
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[0227] FIG. 9 shows a fourth example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention.
The method includes the following steps.
[0228] Steps 901-907 are the same as steps 201-207 in FIG. 2.
[0229] In step 908, the PDN GW sends a register request message to the HSS/AAA server,
and the message carries an RAT type of the UE.
[0230] The value of the RAT Type may be one of the following two circumstances.
[0231] The RAT Type may be a 3GPP network, which indicates that the network that the UE
accesses currently is a 3GPP network; and the RAT Type may be a non-3GPP network, which
indicates that the network that the UE accesses currently is a non-3GPP network.
[0232] The RAT Type of the UE may also be a specific network type, for example, GERAN,
UTRAN, or EUTRAN network in the 3GPP networks, or WLAN, Wimax, and CDMA network
in the non-3GPP networks.
[0233] Step 906 and step 908 may be performed at any order.
[0234] In step 909, the HSS/AAA server returns a register response message to the PDN GW.
[0235] In step 910, when the HSS/AAA server determines that the RAT Type of the UE
registered last time is inconsistent with that of the UE registered this time, the HSS/AAA server
sends a cancel location message to the MME, in which the cancel location message carries a
cause value represented as "Cancel because of UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", indicating that the cancel location is caused by the handover or
switching of the UE from the 3GPP network to the non-3GPP network.
[0236] In this step, before the cancel location message is sent to the MME, the process further
includes that the HSS/AAA server determines whether to send the cancel location message
according to the handover or change of the UE in the access network, or according to the
handover or change of the UE in the access network and the terminal capability of the UE, or
according to the handover or change of the UE in the access network and the access policy
information of the operator, or according to the handover or change of the UE in the access
network, the terminal capability of the UE, and the access policy information of the operator; if
yes, the HSS/AAA server sends the cancel location message to the MME; otherwise, the
HSS/AAA server does not send the cancel location message to the MME, and the process ends.
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Specifically, the determination process specifically includes the following circumstances.
[0237] 1) The HSS/AAA server determines whether to send the cancel location message to the
MME according to the handover or change of the UE in the access network, in which the
HSS/AAA server determines whether the UE is handed over or switched from the 3GPP network
to the non-3GPP network; if yes, the HSS/AAA server sends the cancel location message to the
MME; otherwise, the HSS/AAA server does not send the cancel location message to the MME,
and the process ends.
[0238] 2) The HSS/AAA server determines whether to send the cancel location message to the
MME according to the handover or switching of the UE in the access network and the terminal
capability of the UE, in which if the HSS/AAA server determines that the UE is handed over or
switched from the 3GPP network to the non-3GPP network, and the terminal capability of the
UE is "single radio capability", the HSS/AAA server sends the cancel location message to the
MME; if the HSS/AAA server determines that the terminal capability of the UE is "multi radio
capability", the HSS/AAA server does not send the cancel location message to the MME.
[0239] 3) The HSS/AAA server determines whether to send the cancel location message to the
MME according to the handover or change of the UE in the access network and the access policy
information of the operator, in which if the HSS/AAA server determines that the UE is handed
over or switched from the 3GPP network to the non-3GPP network, and the access policy
information of the operator is "single radio access", the HSS/AAA server sends the cancel
location message to the MME; if the HSS/AAA server determines that the UE is handed over or
switched from the 3GPP network to the non-3GPP network, and the access policy information of
the operator is "multi radio access", the HSS/AAA server does not send the cancel location
message to the MME.
[0240] 4) The HSS/AAA server determines whether to send the cancel location message to the
MME according to the handover or switching of the UE in the access network, the terminal
capability of the UE, and the access policy information of the operator, in which if the HSS/AAA
server determines that the UE is handed over or switched from the 3GPP network to the
non-3GPP network, the terminal capability of the UE is "dual radio capability", and the access
policy information of the operator is "single radio access", or if the HSS/AAA server determines
that the UE is handed over or switched from the 3GPP network to the non-3GPP network, the
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access policy information of the operator is "multi radio access", and the terminal capability of
the UE is "single radio capability", or if the HSS/AAA server determines that the UE is handed
over or switched from the 3GPP network to the non-3GPP network, the terminal capability of the
UE is "single radio capability", and the access policy information of the operator is "single radio
access", the HSS/AAA server sends the cancel location message to the MME; if the HSS/AAA
server determines that the terminal capability of the UE is "dual radio capability" and the access
policy information of the operator is "multi radio access", the HSS/AAA server does not send the
cancel location message to the MME.
[0241] In step 911, after receiving the cancel location message, the MME deletes the MM
context of the UE, and returns a cancel location Ack message to the HSS/AAA server.
[0242] In step 912, if the MME finds that the subscription data and the MM context of the UE
are deleted, the MME sends a purge UE message to the HSS/AAA server, and then the
HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0243] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0244] In step 913, the MME initiates a bearer deletion process to delete the bearer resources
used by the UE on the 3GPP network side (including the MME, serving GW, and PDN GW).
[0245] In this embodiment, the UE is detached after step 907, and the detailed process thereof
can be known with reference to the descriptions of the third example of the method for user
detachment.
[0246] In this embodiment, it should be noted that, the HSS and the AAA server may be
configured in different entities or in a same entity. When the HSS and the AAA server are
configured in different entities, the register request message sent by the PDN GW in step 908 is
forwarded to the HSS through the AAA server, the register response message sent by the HSS in
step 909 is forwarded to the PDN GW through the AAA server, the cancel location message sent
to the MME in step 910 is sent to the MME by the HSS, and the purge UE message sent by the
MME in step 912 is sent to the HSS. The cancel location message sent by the HSS/AAA server
may not carry the cause value.
[0247] In this embodiment, it should be noted that, the method in this embodiment is also
applicable to the handover or switching of the UE from a non-3GPP network to a 3GPP network.
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[0248] In Step I, after the UE is handed over or switched from the non-3GPP network to the
3GPP network, the MME or the PDN GW registers a new RAT Type of the UE with the
HSS/AAA server.
[0249] In Step II, if the HSS/AAA server determines that the RAT type of the UE registered
last time is inconsistent with that of the UE registered this time, the HSS/AAA server determines
whether to send the cancel location message to a non-3GPP GW (to notify the non-3GPP GW to
detach the UE from the non-3GPP network) according to the handover or change of the UE in the
access network, or according to the handover or change of the UE in the access network and the
terminal capability of the UE, or according to the handover or change of the UE in the access
network and the access policy information of the operator, or according to the handover or
change of the UE in the access network, the terminal capability of the UE, and the access policy
information of the operator. If yes, the HSS/AAA server sends the cancel location message to the
non-3GPP GW. The detailed process thereof can be known with reference to the descriptions of
the above embodiment.
[0250] FIG. 10 shows a fifth example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention.
The method includes the following steps.
[0251] In step 1001, the UE accesses a 3GPP access network through the serving GW and the
PDN GW.
[0252] In step 1002, the UE triggers a handover or switching from the 3GPP network to the
non-3GPP network.
[0253] In step 1003, the MME sends a handover or switching request (HO Request) message
to a non-3GPP GW.
[0254] In this step, as for a WLAN system, the non-3GPP GW is an EPDG; as for a Wimax
system, the non-3GPP GW is an ASN GW; and as for a CDMA system, the non-3GPP GW is an
AGW.
[0255] In Step 1004, the non-3GPP GW performs a resource create procedure.
[0256] In this step, the resource create procedure includes performing the processes of user
authentication and PMIP tunnel binding.
[0257] In step 1005, the non-3GPP GW returns an HO response message to the MME.
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Docket No. HW708564
[0258] In step 1006, the MME sends an HO command message to the UE, and commands the
UE to hand over or switch to an access network of the non-3GPP network.
[0259] In step 1007, the UE sends an access request message to the non-3GPP GW, and is
handed over or switched to the non-3GPP network.
[0260] In step 1008, the non-3GPP GW returns an access accept message to the UE.
[0261] Steps 1001-1008 and the process of the handover or switching of the UE from a 3GPP
network to a non-3GPP network in the prior art implement functions similar to that of steps
201-207 in FIG. 2.
[0262] In step 1009, the non-3GPP GW returns an HO complete message to the MME.
[0263] In step 1010, the MME returns an HO complete Ack message to the non-3GPP GW.
[0264] Step 1010 further includes: determining, by the MME, whether to delete the MM
context of the UE (that is, to detach the UE from the 3GPP network) according to the handover
or change of the UE in the access network, or according to the handover or change of the UE in
the access network and the terminal capability of the UE, or according to the handover or change
of the UE in the access network and the access policy information of the operator, or according to
the handover or change of the UE in the access network, the terminal capability of the UE, and
the access policy information of the operator; if yes, the MME deletes the MM context of the UE;
otherwise, the process ends. Specifically, the determination process includes the following four
circumstances.
[0265] 1) The MME determines whether to delete the MM context of the UE according to the
handover or change of the UE in the access network, in which if the MME determines that the
UE is handed over or switched from the 3GPP network to the non-3GPP network, the MME
deletes the MM context of the UE; otherwise, the MME does not delete the MM context of the
UE.
[0266] 2) The MME determines whether to delete the MM context of the UE according to the
handover or change of the UE in the access network and the terminal capability of the UE, in
which if the MME determines that the UE is handed over or switched from the 3GPP network to
the non-3GPP network, and the terminal capability of the UE is "single radio capability", the
MME deletes the MM context of the UE; if the MME determines that the terminal capability of
the UE is "multi radio capability", the MME does not delete the MM context of the UE.
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[0267] 3) The MME determines whether to delete the MM context of the UE according to the
handover or change of the UE in the access network and the access policy information of the
operator, in which if the MME determines that the UE is handed over or switched from the 3GPP
network to the non-3GPP network, and the access policy information of the operator is "single
radio access", the MME deletes the MM context of the UE; if the MME determines that the
access policy information of the operator is "multi radio access", the MME does not delete the
MM context.
[0268] 4) The MME determines whether to delete the MM context of the UE according to the
handover or change of the UE in the access network, the terminal capability of the UE, and the
access policy information of the operator, in which if the MME determines that the UE is handed
over or switched from the 3GPP network to the non-3GPP network, the terminal capability of the
UE is "dual radio capability", and the access policy information of the operator is "single radio
access", or if the MME determines that the UE is handed over or switched from the 3GPP
network to the non-3GPP network, the access policy information of the operator is "multi radio
access", and the terminal capability of the UE is "single radio capability", or if the MME
determines that the UE is handed over or switched from the 3GPP network to the non-3GPP
network, the terminal capability of the UE is "single radio capability", and the access policy
information of the operator is "single radio access", the MME deletes the MM context of the UE;
if the MME determines that the terminal capability of the UE is "dual radio capability", and the
access policy information of the operator is "multi radio access", the MME does not delete the
MM context of the UE.
[0269] In step 1011, if the MME finds that the subscription data and the MM context of the
UE are deleted, the MME sends a purge UE message to the HSS/AAA server, and then the
HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0270] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0271] In step 1012, the MME initiates a bearer deletion process to delete the bearer resources
used by the UE on the 3GPP network side (including the MME, serving GW, and PDN GW).
[0272] In this embodiment, the UE is detached after Step 1007, and the detailed process
thereof can be known with reference to the descriptions of the third example of the method for
38
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user detachment.
[0273] In this embodiment, it should be noted that, the method in this embodiment is also
applicable to the handover or switching of the UE from the non-3GPP network to the 3GPP
network.
[0274] In Step I, after the UE is handed over or switched from the non-3GPP network to
network, the MME returns an HO complete message to the non-3GPP GW.
[0275] In step II, the non-3GPP GW determines whether to delete the MM context of the UE
(that is, to detach the UE from the non-3GPP network) according to the handover or change of
the UE in the access network, or according to the handover or change of the UE in the access
network and the terminal capability of the UE, or according to the handover or change of the UE
in the access network and the access policy information of the operator, or according to the
handover or change of the UE in the access network, the terminal capability of the UE, and the
access policy information of the operator; if yes, the non-3GPP GW deletes the MM context of
the UE. The detailed process thereof can be known with reference to the descriptions of the
above embodiment.
[0276] FIG. 11 shows a sixth example of the method for user detachment when a handover or
change occurs in a heterogeneous network according to an embodiment of the present invention.
The method includes the following steps.
[0277] Steps 1101-1102 are the same as steps 201-202 in FIG. 2.
[0278] In step 1103, the UE sends a detach request message to the MME, and the detach
request message carries a cause value represented as "detach because of UE's accessing RAT
changed from a 3GPP network to a non-3GPP network", indicating that the detach request
message is caused by the handover or change of the UE from the 3GPP network to the non-3GPP
network.
[0279] In this step, before the UE sends the detach request message to MME, the process
further includes determining whether to detach the UE from the 3GPP network according to the
handover of the UE in the access network, or according to the handover of the UE in the access
network and the terminal capability of the UE, or according to the handover of the UE in the
access network and the access policy information of the operator, or according to the handover of
the UE in the access network, the terminal capability of the UE, and the access policy
39
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information of the operator. If yes, the UE sends the detach request message to the MME;
otherwise, step 1107 is performed. The terminal capability of the UE and the access policy
information of the operator are obtained by the network elements according to the processes of
FIGS. 3 and 4. Specifically, the determination process includes the following circumstances.
[0280] 1) The UE determines whether to detach the UE from the 3GPP network and whether
to send the detach request message to the MME according to the handover or change of the UE in
the access network, in which the UE determines whether the UE is handed over or switched from
the 3GPP network to the non-3GPP network; if yes, the MM context and bearer resources of the
3GPP network in the UE are deleted, and the detach request message is sent to the MME;
otherwise, step 1107 is performed.
[0281] 2) The UE determines whether to detach the UE from the 3GPP network and whether
to send the detach request message to the MME according to the handover or change of the UE in
the access network and the terminal capability of the UE, in which if the UE determines that the
UE is handed over or switched from the 3GPP network to the non-3GPP network, and the
terminal capability of the UE is "single radio capability", the MM context and the bearer
resources of the 3GPP network in the UE are deleted, and the detach request message is sent to
the MME; if the UE determines that the terminal capability of the UE is "multi radio capability",
the MM context of the 3GPP network in the UE is not deleted (that is, the UE is not detached
from the 3GPP network), the detach request message is not sent to the MME, and step 1107 is
performed.
[0282] 3) The UE determines whether to detach the UE from the 3GPP network and whether
to send the detach request message to the MME according to the handover or change of the UE in
the access network and the access policy information of the operator, in which if the UE
determines that the UE is handed over or switched from the 3GPP network to the non-3GPP
network, and the access policy information of the operator is "single radio access", the MM
context and the bearer resources of the 3GPP network in the UE are deleted, and the detach
request message is sent to the MME; if the UE determines that the access policy information of
the operator is "multi radio access", the MM context of network in the UE is not deleted (that is,
the UE is not detached from the 3GPP network), the detach request message is not sent to the
MME, and step 1107 is performed.
40
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[0283] 4) The UE determines whether to detach the UE from the 3GPP network according to
the handover or change of the UE in the access network, the terminal capability of the UE, and
the access policy information of the operator, in which if the UE determines that the UE is
handed over or switched from the 3GPP network to the non-3GPP network, the terminal
capability of the UE is "dual radio capability", and the access policy information of the operator
is "single radio access", or if the UE determines that the UE is handed over or switched from the
3GPP network to the non-3GPP network, the access policy information of the operator is "multi
radio access", and the terminal capability of the UE is "single radio capability", or if the UE
determines that the UE is handed over or switched from the 3GPP network to the non-3GPP
network, the terminal capability of the UE is "single radio capability", and the access policy
information of the operator is "single radio access", the MM context and the bearer resources of
the 3GPP network in the UE are deleted, and the detach request message is sent to the MME. If
the UE determines that the terminal capability of the UE is "dual radio capability", and the access
policy information of the operator is "multi radio access", the MM context of the 3GPP network
in the UE is not deleted (that is, the UE is not detached from the 3GPP network), the detach
request message is not sent to the MME, and step 1107 is performed.
[0284] In step 1104, after the MME receives the detach request message, the MME deletes the
MM context of the UE in the MME, initiates a bearer deletion process, and deletes the bearer
resources used by the UE on the 3GPP network side.
[0285] In this step, the bearer resources used by the UE on the 3GPP network side include the
bearer resources used by the UE in the MME, serving GW, and PDN GW.
[0286] In step 1105, if the MME finds that the subscription data and the MM context of the
UE are deleted, the MME sends a purge UE message to the HSS/AAA server, and then the
HSS/AAA server purges the record of the UE, and returns a purge UE Ack message to the MME.
[0287] In this step, it is determined whether to delete the subscription data of the UE by the
MME according to the actual conditions. This step is optional.
[0288] In step 1106, the MME sends a Detach Accept message to the UE.
[0289] Steps 1107-1111 are the same as steps 203-207 in FIG. 2.
[0290] Step 1103 and step 1107 may be performed at any order.
[0291] In this embodiment, it should be noted that, the method in this embodiment is also
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NSN677-1002, Page 196
Docket No. HW708564
applicable to the handover or switching of the UE from the non-3GPP network to the 3GPP
network.
[0292] When the UE is handed over from the non-3GPP network to the 3GPP network, the
UE determines whether to detach the UE from the non-3GPP network according to the handover
of the UE in the access network, or according to the handover of the UE in the access network
and the terminal capability of the UE, or according to the handover of the UE in the access
network and the access policy information of the operator, or according to the handover of the
UE in the access network, the terminal capability of the UE, and the access policy information of
the operator. If yes, the UE sends the detach request message to the non-3GPP GW. The detailed
process thereof can be known with reference to the description of the above embodiment.
[0293] It should be noted that, in this embodiment, the serving GW and the PDN GW may be
configured in different entities or in the same entity. When the serving GW and the PDN GW are
configured in the same entity, the messages between the serving GW and the PDN GW are
transmitted in the same entity. The HSS and the AAA server may be configured in different
entities or in the same entity. If the HSS and the AAA server are configured in different entities,
the MME sends the purge UE message to the HSS.
[0294] In the embodiments of the present invention, if the user detachment is caused by the
handover or change of the UE from the 3GPP network to the non-3GPP network, after the user
detachment, the process may further include: setting, by the MME of the 3GPP, the state of the
UE to an invalid state. Specifically, the process of setting, by the MME of the 3GPP, the state of
the UE to an invalid state is implemented as follows.
[0295] The MME deletes the subscription date information and the MM context of the UE.
[0296] Alternatively, the MME retains the subscription data information of the UE, but sets
the state of the MME used by the UE to an invalid state.
[0297] Alternatively, the state of the MME used by the UE is set to an invalid value.
[0298] Alternatively, the MME retains the subscription data information of the UE, but sets a
change flag location of the MME used by the UE to a changed state.
[0299] In the embodiments of the present invention, if the user detachment is caused by the
handover or switching of the UE from the non-3GPP network to the 3GPP network, after the user
detachment, the process may further include: setting, by the non-3GPP GW of the non-3GPP, the
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NSN677-1002, Page 197
Docket No. HW708564
state of the UE to an invalid state. Specifically, the process of setting, by the non-3GPP GW of
the non-3GPP, the state of the UE to an invalid state is implemented as follows.
[0300] The non-3GPP GW deletes the subscription data information and the MM context of
the UE.
[0301] Alternatively, the non-3GPP GW retains the subscription data information of the user,
but sets the state of the non-3GPP GW used by the UE to an invalid state.
[0302] Alternatively, the address of the non-3GPP GW used by the UE is set to an invalid
value.
[0303] Alternatively, a non-3GPP GW retains the subscription data information of the user,
but sets a change flag position of the non-3GPP GW used by the UE to a changed state.
[0304] FIG. 12 shows a system for user detachment when a handover or change occurs in a
heterogeneous network according to an embodiment of the present invention. The system
includes a UE and a network side.
[0305] The UE is adapted to be handed over or switched from a source network on the
network side to a target network.
[0306] The network side is adapted to hand over or switch the UE from the source network to
the target network to detach the UE from the source network.
[0307] The UE may include a first handover or change module, and the network side may
include a second handover or change module and a second detachment module.
[0308] The first handover or change module is adapted to enable the UE to be handed over or
switched from the source network to the target network.
[0309] The second handover or change module is adapted to enable the network side to hand
over or switch the UE from the source network to the target network.
[0310] The second detachment module is adapted to enable the network side to detach the UE
from the source network.
[0311] Optionally, the UE includes a first detachment module adapted to detach the UE from
the source network.
[0312] Optionally, the UE includes a first detachment determination module and a second
detachment determination module disposed on the network side.
[0313] The first detachment determination module is adapted to determine whether to detach
43
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Docket No. HW708564
the UE from the source network, and if yes, an enable instruction is sent to the first detachment
module to enable the first detachment module.
[0314] The second detachment determination module is adapted to determine whether to
detach the UE from the source network, and if yes, an enable instruction is sent to the second
detachment module to enable the second detachment module. The second detachment
determination module may be disposed in a network element on a network side, such as an MME,
a PDN GW, a serving GW, or an HSS/AAA server.
[0315] The UE further includes a module for sending terminal capability of a UE and a
module for receiving access policy information of an operator, and the network side further
includes a module for receiving the terminal capability of the UE and a module for sending the
access policy information of the operator.
[0316] The module for sending the terminal capability of the UE is adapted to send the
terminal capability of the UE to the network side, and the module for receiving the access policy
information of the operator is adapted to receive the access policy information of the operator
sent by the network side.
[0317] The module for receiving the terminal capability of the UE is adapted to receive the
terminal capability of the UE sent by the UE, and the module for sending the access policy
information of the operator is adapted to send the access policy information of the operator to the
UE.
[0318] Based on the solutions for user detachment when a handover or change occurs in a
heterogeneous network according to the embodiments of the present invention, when the UE is
handed over or switched from the source network on the network side to the target network on
the network side, the source network can detach the UE from the source network, and the UE can
detach the UE from the source network.
[0319] It will be apparent to those skilled in the art that various modifications and variations
can be made to the present invention without departing from the scope of the invention. In view
of the foregoing, it is intended that the present invention cover modifications and variations of
this invention provided that they fall within the scope of the following claims and their
equivalents.
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Docket No. HW708564
CLAIMS
What is claimed is:
1. A method for detaching a user equipment (UE) when a handover from a 3rd generation
partnership project (3GPP) network to a non-3GPP network occurs, comprising:
receiving, by a mobility management entity (MME) of the 3GPP network, a delete bearer
request sent by a serving gateway (GW) of the 3GPP network which carries a cause information
element (IE), wherein the cause IE indicates the UE handovers from the 3GPP network to the
non-3GPP network;
deleting, by the MME, bearer resources of the UE;
detaching, by the MME, the UE from the 3GPP network when all the bearer resources of
the UE are deleted.
2. The method according to claim 1, wherein the cause IE is set to "UE's accessing RAT
changed from a 3GPP network to a non-3GPP network".
3. The method according to claim 2, further comprising:
setting, by a packet data network gateway (PDN GW), the cause IE to "UE' s accessing
RAT changed from a 3GPP network to a non-3GPP network";
sending, by the PDN GW, the delete bearer request message carrying the cause IE to the
serving GW; and
sending, by the serving GW, the delete bearer request message carrying the cause IE to
the MME.
4. The method according to claim 1, wherein detaching, by the MME, the UE from the
3GPP network further comprises:
detaching, by the MME, the UE from the 3GPP network without sending a detach request
message to the UE.
5. The method according to claim 1, comprising:
45
NSN677-1002, Page 200
Docket No. HW708564
detaching, by the MME, the UE from the 3GPP network if a terminal capability of the UE
is single radio capability.
6. The method according to claim 1, comprising:
detaching, by the MME, the UE from the 3GPP network if access policy information of
an operator is single radio access.
7. The method according to claim 1, comprising:
detaching, by the MME, the UE from the 3GPP network if a terminal capability of the UE
is dual radio capability and access policy information of an operator is single radio access; or if
the terminal capability of the UE is single radio capability and the access policy information of
the operator is dual radio access; or if the terminal capability of the UE is the single radio
capability and the access policy information of the operator is the single radio access.
8. A network device, configured to:
receive a delete bearer request sent by a serving gateway (GW) of a 3GPP network when
a handover from the 3GPP network to a non-3GPP network occurs, wherein the delete bearer
request carries a cause information element (IE) which indicates a user equipment handovers
from the 3GPP network to the non-3GPP network;
delete bearer resources of the user equipment; and
detach the UE from the 3GPP network when all the bearer resources of the UE are
deleted.
9. The network device according to claim 8, wherein the cause IE is set to "UE's
accessing RAT changed from a 3GPP network to a non-3GPP network".
10. The network device according to claim 9, wherein the delete bearer request is sent
from a packet data network gateway to the network device via the serving gateway, wherein the
cause IE is set to "UE's accessing RAT changed from a 3GPP network to a non-3GPP network"
by the packet data network gateway.
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NSN677-1002, Page 201
Docket No. HW708564
11. The network device according to claim 8, wherein the network device is configured
to detach the UE from the 3GPP network without sending a detach request message to the UE.
12. The network device according to claim 8, wherein the network device is configured to
detach the UE from the 3GPP network if a terminal capability of the UE is single radio
capability.
13. The network device according to claim 8, wherein the network device is configured to
detach the UE from the 3GPP network if access policy information of an operator is single radio
access.
14. The network device according to claim 8, wherein the network device is configured to
detach the UE from the 3GPP network if a terminal capability of the UE is dual radio capability
and access policy information of an operator is single radio access; or if the terminal capability of
the UE is single radio capability and the access policy information of the operator is dual radio
access; or if the terminal capability of the UE is the single radio capability and the access policy
information of the operator is the single radio access.
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Docket No. HW708564
ABSTRACT
A method for user detachment when a handover or change occurs in a heterogeneous
network is provided. The method includes: a user equipment (UE) is handed over or switched
from a source network to a target network; a network element on a network side determines
whether to detach the UE from the source network, and if yes, the network element on the
network side detaches the UE from the source network. A system and a device for user
detachment when a handover or change occurs in a heterogeneous network, and another method
for user detachment when a handover or change occurs in a heterogeneous network are also
provided.
48
NSN677-1002, Page 203
on-KiPP Access
MME E
Serving PDN AAA
Ciateway Gateway Semer
FIG. 1
6IRAN
c:!:!TRAN
1/12
NSN677-1002, Page 204
2/12
Non-3GPP GW
UE
4
202 UE triggers the handover/
change
203Access Request
201
MME Serving
GW PDN GW
HSS/AAA Server
Access the 3GPP network
204 Access authentication process
205a Proxy Binding Update
205b Binding Update
206a Proxy Binding Ack 4
206b Binding Ack
207 Access Accept
208 Delete Bearer Request 4 4
209 Delete Bearer Response
FIG. 2
NSN677-1002, Page 205
3/12
UE Network
element on the access side
MME Serving GW
PDN GW
HSS/AAA Server
PCRF
301 Attach Request
302 Autientication process for the UE N
303 Update Location
304 Insert Subscription data
305Update Location Ack 4
306 Create Bearer Request
307 PCC Rules equest
308 PCC Rules 4
309 Create Bearer Response .
310a Register 4
310b Register 4 *
rovisior
311 Attach Accept 4
312 Bearer establishment request 4
313 Radio Bearer establishment response
FIG. 3
NSN677-1002, Page 206
UE Serving GW
PDN
GW HSS/AAA
Server MME
401TAU/RAU Request
402 Update Location
403 Insert Subscription data
404 Update Location
405 Update Bearer Request
4 406a Register
406b Register 4 ►
407 TAU/RAU Accept 4
Ack
4/12
FIG. 4
NSN677-1002, Page 207
5/12
UE Non-3GPP GW
501Access Request
PDN GW HSS/AAA
Server PCRF
502 Access authentication process
503a Proxy Binding Update
503b Binding Update
504 PCC Rules Request
505 PCC Rules Provision
506 PCC Rules Request
507 PCC Rules Provision
508a Proxy Binding Ack
508b Binding Ack
509 Register
510 Register
511 Access Accept
FIG. 5
NSN677-1002, Page 208
Non-3GPP GW MME
PDN GW
Serving GW
HS S/ AAA Server
601 Access the 3GPP network 111.-4
UE
4
602 UE triggers the handover/change
6031Access Request
604 Access authentication process 0-4
605aProxy Binding Update
605b Binding Update
606a Proxy Binding Ack 4
606b Binding Ack
4 607 Access Accept
4 608a Delete Bearer Request 4
608b Delete Bearer Request 608b Binding Revocation Ind 4
609a Delete Bearer Response
609b Delete Bearer Response
610 Detach Request 4
610 Detach Accept
609b Binding Revocation Ack
611 Purge UE
611 Purge UE Ack 4-
6/12
FIG. 6
NSN677-1002, Page 209
7/12
UE MME Non-3GPP
GW Servin g GW
PDN GW
HSS/AAA Server
701 Access the 3GPP network
702 UE triggers the handover/change
703 Access Request
704 Access authentication process
705a Proxy Binding Update
705b Binding Update
706a Proxy Binding Ack
706b Binding Ack
707 Access Accept
708a Delete Bearer Request
708b Delete Bearer Request 708b Binding Revocation Indication
709a Delete Bearer Response
709b Delete Bearer Response 709b Binding Revocation Ack
710 Purge UE
710 Purge UE Ack
FIG. 7
NSN677-1002, Page 210
8/12
UE MME Non-
3GPP GW Serving
GW PDN GW
HS S/AAA Server
801 Access the 3GPP network
802 UE triggers the handover/ change
803 Access Request
804 Access authenticatio I 6 rocess
805aProxy Binding Update
805b Binding Update
06a Proxy Binding Ack
806b Binding Ack
807Access Accept
808a Detacl Request
808b Detach Request
808c4 Detach Req est 808c Binding Revocation Indication
809a Detac Response
809b Detac Response
809c Detach Response 809c Binding Revocation Ack
810 Delete Bearer Response
811 Purge UE
811 Purge UE Ack
FIG. 8
NSN677-1002, Page 211
9/12
UE MME Non-3GPP
GW Serving
GW PDN GW
HS S/AAA Server
901 Access the 3GPP network 4
902 UE triggers handover/cha
the ge
903 Access Request
904 Access authentication process 4
905a Proxy Binding Udate
905b Binding Update
906a Proxy 4
Binding Ack
906b Binding Ack 908 Register 4
907 Access Accept Request . 4 909 Register
Response
910 Cancel Location
911 Cancel Location Ack
912
912
Purge UE
Purge UE Ack
913 Delete Bearer Response
FIG. 9
NSN677-1002, Page 212
10/12
PDN GW
Serving GW
HSS/AAA Server
UE
1001 Access the 3GPP network
MME
Non-3GPP GW
4
1002 UE triggers the handover
1003 HO Request
1004 Resource Create Procedure
1005 HO Response
1006 HO Command
1007 Access Request
1008 Access Accept 4
1009 HO Complete
1010 HO Complete Ack
1011 Purge UE
1011 Purge UE Ack 4-
1012 Delete Bearer Response
FIG. 10
NSN677-1002, Page 213
MME Non-
3GPP GW Serving
GW PDN GW
HSS/AAA Server
UE
1101 Access the 3GPP network
1102 UE triggers the handover/change
1103 Detach Request
1104 Delete Bearer Response
1105 Purge UE
105 Purge UE Ack
1106 Detach Accept
1107 Access Request
1108 Access Authentication •
1109a Proxy Binding Update
1109b Binding Update
11 10a Proxy Binding Ack I
1110b Binding Ack
1111 Access Accept
1 1/1 2
FIG. 11
NSN677-1002, Page 214
Module for receiving access
policy information of operator
First detachment determination
module
Second detachment determination module
Module for sending terminal capability
of UE
Module for receiving terminal capability of
UE
First handover module
First detachment module
•
Second handover module
Second detachment module
•
UE
Module for sending access policy information of
operator
Network side
4
12/12
FIG. 12
NSN677-1002, Page 215
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
Patent Application No.
Confirmation No.
Applicant: WU et al.
Filed: June 27, 2011
TC/AU:
Examiner:
Docket No.: HW708564 (Client Ref. No. 81356140US16)
Customer No.: 77399
Commissioner for Patents P.O. Box 1450 Alexandria, VA 22313-1450
STATEMENT OF PRE-EXAMINATION SEARCH
Dear Sir:
This Pre-Examination Search Document is provided in support of the Petition for
Accelerated Examination filed herewith.
A pre-examination search was conducted involving U.S. patents and patent application
publications, foreign patents documents and non-patent literatures as indicated below. The
results of the search are provided on an Information Disclosure Statement filed concurrently
herewith.
NSN677-1002, Page 216
Docket No. HW708564 Statement of Pre-Examination Search
A. PRE-EXAMINATION SEARCH
1. U.S. Field Search:
Classes/Subclasses Searched:
370/331, 370/332, 370/328, 370/352, 709/229, 455/428, 455/436, 455/437,
455/438, 455/439, 455/442, 455/422.1, 455/560
Date Conducted: May 1, 3 - 6, and 10, 2011.
2. Foreign Field of Search:
IPCs Searched:
HO4Q-007/38, HO4Q-007/20, HO4Q-007/00, GO6F-015/16, HO4L-029/06,
HO4W-036/14, HO4L-012/46, HO4W-004/00, HO4L-012/56, HO4L-029/04,
HO4W-036/00
Date Conducted: May 6 and 10, 2011.
3. Database Searches:
3(a). Database Service: WIPS (US)
Files Searched:
Patent scope: Search US patent and application at http://www.wipsglobal.com/
(the years are selected all). In the following searches, the classes are searched in all class
field (.UC.), and the remaining terms are searched in fulltext.
In the following searches, the "*" is a wildcard for a string of any number of
characters.
Search Logic:
(1) Class/Subclass: 370/331
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (370/331).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (370/331).uc.
2
NSN677-1002, Page 217
Docket No. HW708564 Statement of Pre-Examination Search
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (370/331).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (370/331).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (370/331).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (370/331).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (370/331).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (370/331).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (370/331).uc.
(2) Class/Subclass: 370/332
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (370/332).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (370/332).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (370/332).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (370/332).uc.
3
NSN677-1002, Page 218
Docket No. HW708564 Statement of Pre-Examination Search
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (370/332).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (370/332).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (370/332).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (370/332).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (370/332).uc.
(3) Class/Subclass: 370/328
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (370/328).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (370/328).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (370/328).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (370/328).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (370/328).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (370/328).uc.
4
NSN677-1002, Page 219
Docket No. HW708564 Statement of Pre-Examination Search
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (370/328).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (370/328).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (370/328).uc.
(4) Class/Subclass: 370/352
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (370/352).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (370/352).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (370/352).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (370/352).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (370/352).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (370/352).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (370/352).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (370/352).uc.
5
NSN677-1002, Page 220
Docket No. HW708564 Statement of Pre-Examination Search
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (370/352).uc.
(5) Class/Subclass: 709/229
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (709/229).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (709/229).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (709/229).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (709/229).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (709/229).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (709/229).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (709/229).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (709/229).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (709/229).uc.
(6) Class/Subclass: 455/428
6
NSN677-1002, Page 221
Docket No. HW708564 Statement of Pre-Examination Search
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (455/428).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (455/428).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (455/428).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (455/428).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (455/428).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (455/428).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (455/428).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (455/428).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (455/428).uc.
(7) Class/Subclass: 455/436
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (455/436).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (455/436).uc.
7
NSN677-1002, Page 222
Docket No. HW708564 Statement of Pre-Examination Search
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (455/436).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (455/436).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (455/436).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (455/436).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (455/436).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (455/436).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (455/436).uc.
(8) Class/Subclass: 455/437
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (455/437).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (455/437).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (455/437).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (455/437).uc.
8
NSN677-1002, Page 223
Docket No. HW708564 Statement of Pre-Examination Search
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (455/437).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (455/437).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (455/437).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (455/437).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (455/437).uc.
(9) Class/Subclass: 455/438
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (455/438).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (455/438).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (455/438).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (455/438).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (455/438).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (455/438).uc.
9
NSN677-1002, Page 224
Docket No. HW708564 Statement of Pre-Examination Search
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (455/438).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (455/438).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (455/438).uc.
(10) Class/Subclass: 455/439
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (455/439).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (455/439).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (455/439).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (455/439).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (455/439).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (455/439).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (455/439).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (455/439).uc.
10
NSN677-1002, Page 225
Docket No. HW708564 Statement of Pre-Examination Search
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (455/439).uc.
(11) Class/Subclass: 455/442
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (455/442).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (455/442).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (455/442).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (455/442).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (455/442).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (455/442).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (455/442).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (455/442).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (455/442).uc.
(12) Class/Subclass: 455/422.1
11
NSN677-1002, Page 226
Docket No. HW708564 Statement of Pre-Examination Search
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (455/422.1).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (455/422.1).uc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (455/422.1).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (455/422.1).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (455/422.1).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (455/422.1).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (455/422.1).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (455/422.1).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (455/422.1).uc.
(13) Class/Subclass: 455/560
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (455/560).uc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (455/560).uc.
12
NSN677-1002, Page 227
Docket No. HW708564 Statement of Pre-Examination Search
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (455/560).uc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (455/560).uc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (455/560).uc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (455/560).uc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (455/560).uc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (455/560).uc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (455/560).uc.
3(b). Database Service: WIPS (EPO)
Files Searched: Patent scope: Search EPO patent and application at
http:/,/wwwpsglobal.com/(the years are selected all). In the following searches, the
classes are search in the class field, and the remaining terms are searched in all fields of
the EPO patent application and EPO patent database, the "*" is a wildcard for a string of
any number of characters.
Search Logic:
(1) International Patent Classification (IPC): HO4Q-007/38
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
13
NSN677-1002, Page 228
Docket No. HW708564 Statement of Pre-Examination Search
mov*) and (delet* or releas*) and detach*) and (H04Q-007/38).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (H04Q-007/38).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (H04Q-007/38).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (H04Q-007/38).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (H04Q-007/38).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04Q-007/38).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04Q-007/38).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04Q-007/38).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (H04Q-007/38).ipc.
(2) International Patent Classification (IPC): HO4Q-007/20
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (H04Q-007/20).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (H04Q-007/20).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
14
NSN677-1002, Page 229
Docket No. HW708564 Statement of Pre-Examination Search
mov*) and delet* and context and (3GPP or non-3GPP)) and (H04Q-007/20).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (H04Q-007/20).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (H04Q-007/20).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04Q-007/20).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04Q-007/20).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04Q-007/20).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (H04Q-007/20).ipc.
(3) International Patent Classification (IPC): HO4Q-007/00
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (H04Q-007/00).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (H04Q-007/00).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (H04Q-007/00).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (H04Q-007/00).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
15
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Docket No. HW708564 Statement of Pre-Examination Search
mov*) and detach* and (capability or policy)) and (H04Q-007/00).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04Q-007/00).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04Q-007/00).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04Q-007/00).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (H04Q-007/00).ipc.
(4) International Patent Classification (IPC): GO6F-015/16
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (GO6F-015/16).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (GO6F-015/16).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (GO6F-015/16).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (GO6F-015/16).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (GO6F-015/16).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (GO6F-015/16).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
16
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Docket No. HW708564 Statement of Pre-Examination Search
context and (3GPP or non-3GPP) and (GO6F-015/16).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (GO6F-015/16).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (GO6F-015/16).ipc.
(5) International Patent Classification (IPC): HO4L-029/06
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (HO4L-029/06).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (HO4L-029/06).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (HO4L-029/06).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (HO4L-029/06).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (HO4L-029/06).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (HO4L-029/06).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (HO4L-029/06).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (HO4L-029/06).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (HO4L-029/06).ipc.
17
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Docket No. HW708564 Statement of Pre-Examination Search
(6) International Patent Classification (IPC): HO4W-036/14
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (H04W-036/14).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (H04W-036/14).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (H04W-036/14).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (H04W-036/14).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (H04W-036/14).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04W-036/14).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04W-036/14).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04W-036/14).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (H04W-036/14).ipc.
(7) International Patent Classification (IPC): HO4L-012/46
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (HO4L-012/46).ipc.
18
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Docket No. HW708564 Statement of Pre-Examination Search
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (HO4L-012/46).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (HO4L-012/46).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (HO4L-012/46).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (HO4L-012/46).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (HO4L-012/46).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (HO4L-012/46).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (HO4L-012/46).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (HO4L-012/46).ipc.
(8) International Patent Classification (IPC): HO4W-004/00
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (H04W-004/00).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (H04W-004/00).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (H04W-004/00).ipc.
19
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Docket No. HW708564 Statement of Pre-Examination Search
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (H04W-004/00).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (H04W-004/00).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04W-004/00).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04W-004/00).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04W-004/00).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (H04W-004/00).ipc.
(9) International Patent Classification (IPC): HO4L-012/56
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (HO4L-012/56).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (HO4L-012/56).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (HO4L-012/56).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (HO4L-012/56).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (HO4L-012/56).ipc.
20
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Docket No. HW708564 Statement of Pre-Examination Search
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (HO4L-012/56).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (HO4L-012/56).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (HO4L-012/56).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (HO4L-012/56).ipc.
(10) International Patent Classification (IPC): HO4L-029/04
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (HO4L-029/04).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (HO4L-029/04).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (HO4L-029/04).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (HO4L-029/04).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (HO4L-029/04).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (HO4L-029/04).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (HO4L-029/04).ipc.
21
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Docket No. HW708564 Statement of Pre-Examination Search
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (HO4L-029/04).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (HO4L-029/04).ipc.
(11) International Patent Classification (IPC): HO4W-036/00
Ll: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and (delet* or releas*) and detach*) and (H04W-036/00).ipc.
L2: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and bear* and delet* and (3GPP or non-3GPP)) and (H04W-036/00).ipc.
L3: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and delet* and context and (3GPP or non-3GPP)) and (H04W-036/00).ipc.
L4: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and resourc* and detach*) and (H04W-036/00).ipc.
L5: ((handover* or hand-over* or (hand* adj over) or handoff* or hand-off* or
mov*) and detach* and (capability or policy)) and (H04W-036/00).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04W-036/00).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04W-036/00).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04W-036/00).ipc.
L9: ((mobility adj management adj entity) or MME) and (delet* or releas*) and
detach* and (H04W-036/00).ipc.
22
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Docket No. HW708564 Statement of Pre-Examination Search
3(c). Database Service: WIPO
Files Searched: Search International Patent Applications at
http://www.wipo.int/pctdb/en/. In the following searches, the classes are search in the
class field, and all remaining terms are searched in any field of the WIPO patent
application database.
Search Logic:
(1) International Patent Classification (IPC): HO4Q-007/38
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (H04Q-007/38).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (H04Q-007/38).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (H04Q-007/38).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (H04Q-007/38).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (H04Q-007/38).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04Q-007/38).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04Q-007/38).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04Q-007/38).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
23
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Docket No. HW708564 Statement of Pre-Examination Search
and (H04Q-007/38).ipc.
(2) International Patent Classification (IPC): HO4Q-007/20
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (H04Q-007/20).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (H04Q-007/20).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (H04Q-007/20).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (H04Q-007/20).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (H04Q-007/20).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04Q-007/20).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04Q-007/20).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04Q-007/20).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (H04Q-007/20).ipc.
(3) International Patent Classification (IPC): HO4Q-007/00
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
24
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Docket No. HW708564 Statement of Pre-Examination Search
and (delet* or releas*) and detach*) and (H04Q-007/00).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (H04Q-007/00).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (H04Q-007/00).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (H04Q-007/00).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (H04Q-007/00).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04Q-007/00).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04Q-007/00).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04Q-007/00).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (H04Q-007/00).ipc.
(4) International Patent Classification (IPC): GO6F-015/16
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (GO6F-015/16).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (GO6F-015/16).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
25
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Docket No. HW708564 Statement of Pre-Examination Search
and delet* and context and (3GPP or non-3GPP)) and (GO6F-015/16).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (GO6F-015/16).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (GO6F-015/16).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (GO6F-015/16).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (GO6F-015/16).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (GO6F-015/16).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (GO6F-015/16).ipc.
(5) International Patent Classification (IPC): HO4L-029/06
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (HO4L-029/06).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (HO4L-029/06).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (HO4L-029/06).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (HO4L-029/06).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
26
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Docket No. HW708564 Statement of Pre-Examination Search
and detach* and (capability or policy)) and (HO4L-029/06).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (HO4L-029/06).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (HO4L-029/06).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (HO4L-029/06).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (HO4L-029/06).ipc.
(6) International Patent Classification (IPC): HO4W-036/14
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (H04W-036/14).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (H04W-036/14).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (H04W-036/14).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (H04W-036/14).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (H04W-036/14).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04W-036/14).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
27
NSN677-1002, Page 242
Docket No. HW708564 Statement of Pre-Examination Search
context and (3GPP or non-3GPP) and (H04W-036/14).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04W-036/14).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (H04W-036/14).ipc.
(7) International Patent Classification (IPC): HO4L-012/46
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (HO4L-012/46).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (HO4L-012/46).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (HO4L-012/46).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (HO4L-012/46).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (HO4L-012/46).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (HO4L-012/46).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (HO4L-012/46).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (HO4L-012/46).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
28
NSN677-1002, Page 243
Docket No. HW708564 Statement of Pre-Examination Search
and (HO4L-012/46).ipc.
(8) International Patent Classification (IPC): HO4W-004/00
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (H04W-004/00).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (H04W-004/00).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (H04W-004/00).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (H04W-004/00).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (H04W-004/00).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04W-004/00).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04W-004/00).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04W-004/00).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (H04W-004/00).ipc.
(9) International Patent Classification (IPC): HO4L-012/56
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
29
NSN677-1002, Page 244
Docket No. HW708564 Statement of Pre-Examination Search
and (delet* or releas*) and detach*) and (HO4L-012/56).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (HO4L-012/56).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (HO4L-012/56).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (HO4L-012/56).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (HO4L-012/56).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (HO4L-012/56).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (HO4L-012/56).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (HO4L-012/56).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (HO4L-012/56).ipc.
(10) International Patent Classification (IPC): HO4L-029/04
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (HO4L-029/04).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (HO4L-029/04).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
30
NSN677-1002, Page 245
Docket No. HW708564 Statement of Pre-Examination Search
and delet* and context and (3GPP or non-3GPP)) and (HO4L-029/04).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (HO4L-029/04).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy)) and (HO4L-029/04).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (HO4L-029/04).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (HO4L-029/04).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (HO4L-029/04).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (HO4L-029/04).ipc.
(11) International Patent Classification (IPC): HO4W-036/00
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*) and (H04W-036/00).ipc.
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP)) and (H04W-036/00).ipc.
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP)) and (H04W-036/00).ipc.
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*) and (H04W-036/00).ipc.
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
31
NSN677-1002, Page 246
Docket No. HW708564 Statement of Pre-Examination Search
and detach* and (capability or policy)) and (H04W-036/00).ipc.
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach* and (H04W-036/00).ipc.
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP) and (H04W-036/00).ipc.
L8: (((source or original) and (target or destination)) and network) and delet* and
bear and (H04W-036/00).ipc.
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
and (H04W-036/00).ipc.
3(d). Database Service: SIPO
Files Searched:
Search Chinese Patent Applications at http://www.sipo,gov.cnizliil. In the
following searches, all terms are searched in abstract field of the SIPO patent database.
Search Logic:
Ll: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and (delet* or releas*) and detach*)
L2: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and bear* and delet* and (3GPP or non-3GPP))
L3: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and delet* and context and (3GPP or non-3GPP))
L4: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and resourc* and detach*)
L5: ((handover* or hand-over* or "hand* over" or handoff* or hand-off* or mov*)
and detach* and (capability or policy))
32
NSN677-1002, Page 247
Docket No. HW708564 Statement of Pre-Examination Search
L6: (((source or original) and (target or destination)) and network) and (delet* or
releas*) and detach*
L7: (((source or original) and (target or destination)) and network) and delet* and
context and (3GPP or non-3GPP)
L8: (((source or original) and (target or destination)) and network) and delet* and
bear
L9: ("mobility management entity" or MME) and (delet* or releas*) and detach*
3(e). Database Service: Google
File Searched:
Google Scholar (Non Patent Literature),
littp://scholar.google.com/advanced scholar search?hi,en&lr.
In the following searches, all terms of keywords are searched in all fields of the
Google Scholar database, wherein the "*" is a wildcard for a strong of any number of
characters.
Search Logic:
Ll: (delet* or releas*) and detach*
L2: delet* and bear
L3: bear* and delet* and (3GPP or non-3GPP)
L4: delet* and context and (3GPP or non-3GPP)
L5: resourc* and detach*
3(f). Database Service: 3GPP
33
NSN677-1002, Page 248
Docket No. HW708564 Statement of Pre-Examination Search
File Searched:
3GPP website: http://www.3gpp.org
In the following searches, all terms of are searched in FTP site in Specs field, the
3GPP (3rd Generation Partnership Project) website collects all the protocols of the 3GPP,
wherein the "*" is a wildcard for a strong of any number of characters.
Search Logic:
Ll: (delet* or releas*) and detach*
L2: delet* and bear
L3: bear* and delet* and (3GPP or non-3GPP)
L4: delet* and context and (3GPP or non-3GPP)
L5: resourc* and detach*
34
NSN677-1002, Page 249
Docket No. HW708564 Statement of Pre-Examination Search
B. SEARCH DIRECTED TO THE INVENTION
The pre-Examination search was directed to the claimed invention, encompassing
all the features of the claims and giving the claims their broadest reasonable
interpretation.
C. SEARCH DIRECTED TO THE DISCLOSURE
No disclosed features that are unclaimed at this time are currently seen as features
that may be claimed later.
D. SEARCH REPORT FROM FOREIGN PATENT OFFICE
The current U.S. Application is the U.S. national phase application of
international application No. PCT/CN2008/071842. A search report from the Chinese
Patent Office for PCT patent Application No. PCT/CN2008/071842 is provided herewith.
Since the search report was written in Chinese, Application provides an English
translation here.
The search report from the Chinese Patent Office is provided herewith. Since the search
report was written in Chinese, Application provides an English translation here.
The search report from the European Patent Office is provided herewith.
35
NSN677-1002, Page 250
Docket No. HW708564 Statement of Pre-Examination Search
PATENT COOPERXTION TREATY
t4.r7z ATIANAL.,,sSEARCHINI3 mumlune To;
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36
NSN677-1002, Page 251
Docket No. HW708564
worm ommoN OF WC. INTERN ATIONAL SEARCUING MaittiliTTY
iebrmariomi aggiestiori PCMC.N20(igt071842
RON Na 1 Basis cat3 et opistitel
With iegmi re din hengnnge„ this opinion het: 'bme esisrMisW imh,'
filo inienstinnai .vpliention Ss.t. itwigange iu wh5th 3 is i3 o? a toinsistion tbo itsZterissioniA apPtiottnrs wi!nsib fits Innwsge of a tininiintitnt futnisiral lbs.! tiutpinposen eis.tnntratissnai MX:4 k2 €s} mil 73344
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With mgarki to any rantimirle =Nor 30a$81* add ettiosese disclosed is thn international afrfrgi;:sirion and amemnry ris the slairnest ovation ism itana nstriblisisetti on the basis of
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g..f;kfia,tya, mat. that aystrO 8hs a..M.B VOSPiri or. ovy 4:xviagm mz:Vot §2.}:ae &vets isak: igesi or oraiii$W, the. nquimei Ntatrilma-$ the information in tip hmmino #s witibirorni tofrim is isininio4 Kt. tsar h. Ors;
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Aingneesi erstonergs:
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Statement of Pre-Examination Search
37
NSN677-1002, Page 252
Docket No. HW708564 Statement of Pre-Examination Search
WitVITEN MINION OF TM eftens— doe. INTRRNAstn(riAL igt.AltailiNGAUTUORITY PC.VeN2(3081073. 842
RatosedsteektamtnederRuk43.4iv.10tOrithrtordrantreth„riaihult:ivet(143 ktsi.tanthieii441A1"14tY; 0;0a:et:Sod o?„phmatiosszl sopptsvitat. aattrotot
WeeeeeM
ifionentaku
Mhos 143
Claim Nesna
Ch$hm _2-15: 18-22, :34-23
, 1,- 2, If3* I
Claim None
••••••••••••HAVWV,
i.tat.i.e.ne end *pier:at-ions Rafertme it sevit to tho fallowing .c.Nizrigum RIL2dV402.9663AI ir1Rfe02006:33881441 DI -,:iieeiests a ;settled Mid ChWiffN for 4Witchiel; EkSttfi).xk :41ErIlOO:
fa dis<:Imai a nothod far tetablishing connection iv the hetenkkvmeout 116tVOrit:
1.13 diteltnt,g itethi)d .MM} terrefeal Enr evitching end .r:eletetieg ;irk coutteetice 1e: the. railtiesele 34ate I t y (31)
goolt of tho dia.:mons DI, D3 end DI does rot disclose ell int features to :to oce of tledise I, 1.6, 21 24 and 40 tharafore 2;3 ood; tht critaria set fair in OA KT Assail:le 33(3), ir.tolve ottifeity.
g000rdine;iy, tho depan•rktnt. claim 3-13 of Otis; 1„ the depeadent. €7-22 t3 an* the dettetntitnt claim 24 &:f oiejs* 23, the tte:tasaknt. 0,3e.sd, 26-29 of title aad the depectiattt claim at: claim 30 met the csriterie set telt in the XI' ArticIe 33 (2), involve novnitts„ OTeltriiill }MIKIS)
4octetoot Di diotinaos a ratthnd fce• switthiag attleark seesine (tee the descraptine Put 8, lint 11-vege 44. shim inelssfed taer tan:noel seitohet to a kargat ;IV:A=1*k o &oureo netwo,rc,
serviee melt:ft enntrol wit ,affiges ahat1atr the eetterk toold be suitohed. iii. does not disclose stm.h e feature that a notettek aide unit seperetos the neer terfidttiI from the mina r.etwart.ilowewer, this feature it well-iaown
tht 63.t. It$31:111: On in And the soli-tease technalagp, the 41,1We:et-wetter elais .1 p.4.nrione to filo Allied . ft
par.ean in the art, eta eltifs 1 6Teff3 lltA WIVE the criteria sat oict tha At-ricia 33 (3). dtat net in.,-41re et nsenti.se atm
The adtlitis„aittl„ .feetttre (.4:‘ claim 3 7:5 *NZ:1-.1W= tilt *Nalvt.. 333 14. tit* %/ni'Ant-Nil tfti11101.0..t.Y.
eicife 2 ehich cites- elaits 1 it Oita:16st to the skilled person in the art, tharefera fii itlG 2 dootk aot aatet th.e akqterio set ont tht Article 33 (3), lVot‘";: ?..4S :11EVenti3'V
&It tit*iHSt thsCiotvt Ss s 'si.lcsd far ovitilive rArtAnr.it t:14.30 the description Asp C. lne ..".}age 14, line 14-; fit.awe 4) ehioh .inolzpdes the nser ter.elnal rfiltiZiat?s: tip $WitCh t ti* target. network frail the 3Onrce otfaenis; the .service stitch. teetsvl unit jinitsif nitether the neteorh wralti he estitthed• 4t9t WA Olt:clove oath feettrre '016 Etraiitgli it: separate, f.rott the IIEIMV :hi, f?.zatitre qpirt-icaordo in tho art, ilmod on J a end the well-itfaxst ttwhaoleo, the sahjeat-wotter Ftf el5i% ift Cb'iMiXS V.? Og? ptrson it the ert, aa claim 16 &tee te. Site. tilt irrin3ria. sot out the. PCT Artiote :13 (3), dote not itrpoixt RL ineantiee twA.
'Th aviditionol 11:Ai.M.V i? it eel-iv:0X: '..kht art, ba;Ofi 1).1 end the et13"ktowo tenhhniorf, the ath.:itut-esettex- ef. :anis, 17 eitich cites cIftin 16 if4 OtAdtP.;Zi. EV the et:Ailed. person the 3.):t, therefore claim
e t •f. t Arrt 3), &es otst ifnalse insentive step: 10 e ia ( Tha datment dienitzen &it' fta: twitching fteteur}: settica (ntt the tittveitilisii .nN3e lite 11-
14, lint 14; figure 4), nifich includes: that; the user terminal twitches to the target network free; a scone catenris; the terwite :mita mut or the network tide jtalget whether iha tmtioark wetild ;F•mitthed• dnrz h1A: ffiss<asse ditth iF Tea3:l$33$ that thiE eatiKelf. skit- unit sepetat,tg eat stsor ter:eineI .frm the snerce netoork. fifAeser,
tiiac feaMtra well-kr:owe Ira the att. Used ;so PI end the wel.1--ktem Mtn nub:Nut-atter cinin obwieva to the Allied perm ie the 2Wt., $.3! cloin 23 done not wet the orlterie tot tot tha K3".krticie
33 (3), duee ;:fSi; 1M'OtYt
Pnent i'Cif:SA/237(33;;;MI An :if
38
NSN677-1002, Page 253
Docket No. HW708564 Statement of Pre-Examination Search
WRITFEN OPINION OV ME LNTERNATIONALRENRCHINGAUTEMITY
----,-- Intenwiehal .K.903eWee
PCntN2.00S./07184.2
Sapp}omelet Oat
eaee the epe.se s. f. 3i3):' i.tt: the re.c.emling b(me in mkt enPnel.eat.
-Ceetienetion No,. V the. e:5t";..ik-M3t.S. 174: flu, dg$ nikient-mtten of clef= 25 el.el are eot. thvieee to the skilled
pexeen in the art, en then trial a• we, thenritere i-A3t AFfi. a Paartiale 33 (2), ineolre Imentiva atepe.
?p,inse‹.1 to the denasemite. V?. W, the althjeet-eaotter.s. el:elm 24, 24-233 $04 31-3'3
er:e ant aL.c.W.* to. the sktiie.:i wane. la the aieee elenze aett ;M: r)iCt in the PC? Article
leveh,a inventive etews, ImuoTlaI appllability.
an.amon t2 :1:90.3t applleahint a the: invent:inn, e.;.ainn 1-,?;?.meet Cite eriter'le eet el;t le the. PCT Artiele
Rwnr, ldske.,B7(K.Glemeeral Bea-51:43.g 'ZOO?)
39
NSN677-1002, Page 254
Docket No. HW708564 Statement of Pre-Examination Search
Partial Translation of First Chinese Office Action of Chinese Application
No. 200710137568.8
Mailing Date: July 17, 2009
1. The Applicant has made amendments to Claim 5 in the amended documents submitted on
June 8, 2009. The amended Claim 5 has disclosed two parallel technical solutions concerning a
handover or change between a 3rd-generation partnership project (3GPP) network and a non-
3GPP network. However, the two parallel technical solutions are not disclosed in the original
claims and specification. In addition, the term "indication information" disclosed in Claim 5 is
not disclosed in the original claims and specification, either. Moreover, the amended technical
solution cannot be directly and undoubtedly obtained from the disclosure of the original claims
and specification. Therefore, the amendments go beyond the scope of the disclosure of the
original claims and specification, and Claim 5 fails to meet the provisions of Article 33 of the
Patent Law of the PRC. The Applicant shall note that, as regards the technical solution "the
network element on the network side is a mobility management entity (MME) of the source
network," the specification has only disclosed that, only when a handover or change occurs from
a 3GPP network to a non-3GPP network and the source network is the 3GPP network, the MME
exists in the source network, and moreover, it is a "cause information element (IE)" that indicates
a user equipment (UE) is handed over or switched from the 3GPP network to the non-3GPP
network; and as regards the technical solution "the network element on the network side is a non-
3GPP gateway (GW) of the source network," the specification has only disclosed that, only when
a handover or change occurs from a non-3GPP network to a 3GPP network and the source
network is the non-3GPP network, the non-3GPP GW exists in the source network, and moreover,
it is the "cause IE" that indicates the UE is handed over or switched from the non-3GPP network
to the 3GPP network.
2. The Applicant has added Independent Claim 19 in the amended documents submitted on
June 8, 2009. However, the added independent claim is not disclosed in the original claims and
specification. Moreover, according to the disclosure of the original claims and specification,
persons skilled in the art cannot directly and undoubtedly obtain the technical solution claimed in
Claim 19. Therefore, the amendments go beyond the scope of the disclosure of the original
claims and specification, and Claim 19 fails to meet the provisions of Article 33 of the Patent
40
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Docket No. HW708564 Statement of Pre-Examination Search
Law of the PRC. The Applicant shall note that, the added independent claim is the generalization
of the process of user detachment in the embodiments of the present invention, which does not
disclose how to trigger the user detachment , and such generalized amendments are not allowed.
3. The Applicant has added Dependent Claims 20, 22, and 23 in the amended documents
submitted on June 8, 2009. However, the term "indication information" disclosed in these claims
is not disclosed in the original claims and specification. Moreover, the amended technical
solutions cannot be directly and undoubtedly obtained from the disclosure of the original claims
and specification. Therefore, the amendments go beyond the scope of the disclosure of the
original claims and specification, and Claims 20, 22, and 23 fail to meet the provisions of Article
33 of the Patent Law of the PRC. The Applicant shall note that, the specification has only
disclosed indicating the user by the "cause IE."
4. The Applicant has added Dependent Claims 21, 22, 23, and 24 in the amended documents
submitted on June 8, 2009. However, the terms "MME of the source network" and "non-3GPP
GW of the source network" disclosed in these claims are not disclosed in the original claims and
specification. The original claims and specification have only disclosed that, only when the
source network is a 3GPP network, the MME exists in the source network, and only when the
source network is a non-3GPP network, the non-3GPP GW exists in the source network.
Moreover, according to the disclosure of the specification, persons skilled in the art cannot
directly and undoubtedly obtain the technical solutions claimed in Claims 21, 22, 23, and 24.
Therefore, the amendments go beyond the scope of the disclosure of the original claims and
specification, and Claims 21, 22, 23, and 24 fail to meet the provisions of Article 33 of the Patent
Law of the PRC.
5. Claim 1 seeks to protect a method for user detachment when a handover or change occurs
in a heterogeneous network. Reference Document 1 (US2006/0146803A1) has disclosed a
method for performing handoff of a UE from a Wireless Local Area Network (WLAN) network
to a Universal Mobile Telecommunication System (UMTS) network, and has specifically
disclosed the following contents (referring to Reference Document 1, the Abstract, the
specification, paragraphs 0045-0052 and 0058-0065, and FIGs. 3-4): when performing packet
exchange with the WLAN network, the UE triggers handoff from the current WLAN network to
a Ultimate Radio Access Network (UTRAN), then the UE performs pre-registration to the
UTRAN, and after receiving a Pre-Registration Response message, the UE performs detachment
41
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Docket No. HW708564 Statement of Pre-Examination Search
from the WLAN network. Upon comparison, the distinguishing technical feature between the
technical solution claimed in Claim 1 and the contents disclosed in Reference Document 1 lies in
that, the handover of the UE is known, and the source network determines whether to detach the
UE from the source network, and detaches the UE from the source network. Based on the
distinguishing technical feature, it can be determined that the technical problem to be actually
solved in Claim 1 is to perform determination before the detachment by the network. However,
in the mobile communication field, the handover performed by the UE requires the combined
operation of the network and the terminal. Therefore, persons skilled in the art can easily think of
knowing the handover of the UE by the network. In addition, the detachment is not required
under all circumstances. For example, the detachment is not required to be performed when the
handover is performed on a dual mode mobile terminal. Therefore, in order to perform different
processing according to different circumstances, persons skilled in the art can easily think of
performing the determination before the detachment. Moreover, initiating the detachment by the
user and initiating the detachment by the network are common manners for initiating the
detachment in this field. Since Reference Document 1 has disclosed that the UE initiates the
detachment process, persons skilled in the art can easily think of initiating the detachment by the
network. Therefore, the distinguishing technical feature is a common technical means in this
field. It is obvious for persons skilled in the art to achieve the technical solution claimed in Claim
1 based on Reference Document 1 in combination with the common technical means. Claim 1
neither has prominent substantive features nor represents a notable progress, and fails to have the
inventive step set forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
6. Claims 2 and 3 define Claim 1. However, part of the technical features in the
characterizing portions of Claims 2 and 3 have been disclosed in Reference Document 1
(referring to Reference Document 1, the Abstract, the specification, paragraphs 0052 and 0065,
and FIGs. 3-4): the UE performs handoff from the WLAN network (belonging to the non-3GPP
network) to the UMTS network (belonging to the 3GPP network), and is detached from the
WLAN network after performing the pre-registration. In addition, in the mobile communication
field, the handover performed by the UE requires the combined operation of the network and the
terminal. Therefore, persons skilled in the art can easily think of knowing the handover of the UE
by the network. Given that Claim 1 upon which Claims 2 and 3 are dependent fails to have the
inventive step, Claims 2 and 3 also fail to have the inventive step set forth in Paragraph 3 of
42
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Docket No. HW708564 Statement of Pre-Examination Search
Article 22 of the Patent Law of the PRC.
7. Claim 4 defines Claim 1. However, the characterizing portion of Claim 4 is a common
manner for user detachment in the mobile communication field. Given that Claim 1 upon which
Claim 4 is dependent fails to have the inventive step, Dependent Claim 4 also fails to have the
inventive step set forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
8. Claims 6-7 and 10-11 all define Claim 3. However, the characterizing portions of Claims
6-7 and 10-11 are common procedures for user detachment in the mobile communication field.
Given that Claim 3 upon which Claims 6-7 and 10-11 are dependent fails to have the inventive
step, Claims 6-7 and 10-11 all fail to have the inventive step set forth in Paragraph 3 of Article
22 of the Patent Law of the PRC.
9. Claims 8 and 9 both define Claim 3. However, during the handover in a heterogeneous
network, usually, the registration of the target network is performed and the location is updated.
In addition, after the handover is performed, the source network usually deletes bearer resources
occupied by the handed over user. Given that Claim 3 upon which Claims 8 and 9 are dependent
fails to have the inventive step, Dependent Claims 8 and 9 also fail to have the inventive step set
forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
10. Claim 12 defines Claim 4. However, in the mobile communication field, after the
handover is performed, the source network usually deletes bearer resources occupied by the
handed over user. Given that Claim 4 upon which Claim 12 is dependent fails to have the
inventive step, Dependent Claim 12 also fails to have the inventive step set forth in Paragraph 3
of Article 22 of the Patent Law of the PRC.
11. Claims 13-17 all define Claim 3 or 12. The characterizing portions of Claims 13-17
relate to how to obtain the terminal capability of the UE or the access policy of the network.
However, the user sends terminal capability information to the network when the user accesses
the network or the location is updated, or the terminal capability information of the user is
transmitted between network elements when necessary, and the access policy is transmitted
between network units when necessary, both of which are common technical means in this field.
Given that Claim 3 or 12 upon which Claims 13-17 are dependent fails to have the inventive step,
Claims 13-17 fail to have the inventive step set forth in Paragraph 3 of Article 22 of the Patent
Law of the PRC.
12. Claim 18 defines Claim 7. However, in the mobile communication field, a "cause" IE is
43
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Docket No. HW708564 Statement of Pre-Examination Search
added in some messages to represent the cause value of a certain operation, which is a common
technical means. Given that Claim 7 upon which Claim 18 is dependent fails to have the
inventive step, Claim 18 also fails to have the inventive step set forth in Paragraph 3 of Article
22 of the Patent Law of the PRC.
13. Claim 25 seeks to protect a method for user detachment when a handover or change
occurs in a heterogeneous network. Reference Document 1 (US2006/0146803A1) has disclosed
a method for performing handoff of a UE from a WLAN network to a UMTS network, and has
specifically disclosed the following contents (referring to Reference Document 1, the Abstract,
the specification, paragraphs 0045-0052 and 0058-0065, and FIGs. 3-4): when performing packet
exchange with the WLAN network, the UE triggers handoff from the current WLAN network to
a UTRAN, then the UE performs pre-registration to the UTRAN, and after receiving a Pre-
Registration Response message, the UE performs detachment from the WLAN network. Upon
comparison, the distinguishing technical feature between the technical solution claimed in Claim
25 and the contents disclosed in Reference Document 1 lies in that, the UE determines whether
to detach the UE from the source network. Based on the distinguishing technical feature, it can
be determined that the technical problem to be actually solved in Claim 25 is to perform
determination before the detachment. However, in the mobile communication field, the
detachment is not required under all circumstances. For example, the detachment is not required
to be performed when the handover is performed on a dual mode mobile terminal. Therefore, in
order to perform different processing according to different circumstances, persons skilled in the
art can easily think of performing the determination before the detachment. Therefore, the
distinguishing technical feature is a common technical means in this field. It is obvious for
persons skilled in the art to achieve the technical solution claimed in Claim 25 based on
Reference Document 1 in combination with the common technical means. Claim 25 neither has
prominent substantive features nor represents a notable progress, and fails to have the inventive
step set forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
14. Claim 26 defines Claim 25. The content in the characterizing portion of Claim 26 has
been disclosed in Reference Document 1 (referring to Reference Document 1, the Abstract, the
specification, paragraphs 0045-0052 and 0058-0065, and FIGs. 3-4): the UE triggers handoff
from the current WLAN network to a UTRAN and then performs the handoff to the UTRAN.
Given that Claim 25 upon which Claim 26 is dependent fails to have the inventive step,
44
NSN677-1002, Page 259
Docket No. HW708564 Statement of Pre-Examination Search
Dependent Claim 26 also fails to have the inventive step set forth in Paragraph 3 of Article 22 of
the Patent Law of the PRC.
15. Claims 27 and 28 define Claim 25, and define a process of user detachment. However,
the characterizing portions of Claims 27 and 28 relate to a common process of user detachment
between the 3GPP network and the non-3GPP network in this field. Given that Claim 25 upon
which Claims 27 and 28 are dependent fails to have the inventive step, Dependent Claims 27 and
28 also fail to have the inventive step set forth in Paragraph 3 of Article 22 of the Patent Law of
the PRC.
16. Claim 29 defines Claim 25. However, it is well known to persons skilled in the art that
the UE is in an invalid state after the UE is detached from the network. In addition, the mobility
management network is usually used for performing operations such as managing the user state
and updating the state. Given that Claim 25 upon which Claim 29 is dependent fails to have the
inventive step, Claim 29 also fails to have the inventive step set forth in Paragraph 3 of Article
22 of the Patent Law of the PRC.
17. Claim 31 defines Claim 27. However, part of the content in the characterizing portion of
Claim 31 has been disclosed in Reference Document 1 (referring to Reference Document 1, the
Abstract, the specification, paragraphs 0052 and 0065, and FIGs. 3-4): the UE performs handoff
from the WLAN network (belonging to the non-3GPP network) to the UMTS network
(belonging to the 3GPP network), and is detached from the WLAN network after performing the
pre-registration. In addition, in the mobile communication field, the detachment is not required
under all circumstances. For example, the detachment is not required to be performed when the
handover is performed on a dual mode mobile terminal. Therefore, in order to perform different
processing according to different circumstances, persons skilled in the art can easily think of
performing the determination before the detachment. Further, the occupied bearer and Packet
Data Protocol (PDP) context usually need to be deleted for the detachment of the network. Given
that Claim 27 upon which Claim 31 is dependent fails to have the inventive step, Claim 31 also
fails to have the inventive step set forth in Paragraph 3 of Article 22 of the Patent Law of the
PRC.
18. Claim 32 defines Claim 27 or 28. However, in the mobile communication field, a
"cause" IE is added in some messages to represent the cause value of a certain operation, which
is a common technical means. Given that Claim 27 or 28 upon which Claim 32 is dependent fails
45
NSN677-1002, Page 260
Docket No. HW708564 Statement of Pre-Examination Search
to have the inventive step, Claim 32 also fails to have the inventive step set forth in Paragraph 3
of Article 22 of the Patent Law of the PRC.
19. Claim 33 defines Claim 29. However, the characterizing portion of Claim 33 relates to
common manners for setting the user state in this field. Given that Claim 29 upon which Claim
33 is dependent fails to have the inventive step, Claim 33 also fails to have the inventive step set
forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
20. Claim 34 seeks to protect a system for user detachment when a handover or change
occurs in a heterogeneous network. Reference Document 1 (US2006/0146803A1) has disclosed
a system for performing handoff of a UE from a WLAN network to a UMTS network, and has
specifically disclosed the following contents (referring to Reference Document 1, the Abstract,
the specification, paragraphs 0045-0052 and 0058-0065, and FIGs. 3-4): when performing packet
exchange with the WLAN network, the UE triggers handoff from the current WLAN network to
a UTRAN, then the UE performs pre-registration to the UTRAN, and after receiving a Pre-
Registration Response message, the UE performs detachment from the WLAN network. Upon
comparison, the distinguishing technical feature between the technical solution claimed in Claim
34 and the contents disclosed in Reference Document 1 lies in that, the network side detaches the
UE from the source network. However, initiating the detachment by the user and initiating the
detachment by the network are common manners for initiating the detachment in this field. Since
Reference Document 1 has disclosed that the UE initiates the detachment process, persons
skilled in the art can easily think of initiating the detachment by the network. Therefore, the
distinguishing technical feature is a common technical means in this field. It is obvious for
persons skilled in the art to achieve the technical solution claimed in Claim 34 based on
Reference Document 1 in combination with the common technical means. Claim 34 neither has
prominent substantive features nor represents a notable progress, and fails to have the inventive
step set forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
21. Claim 35 defines Claim 34. However, part of the content in the characterizing portion of
Claim 35 has been disclosed in Reference Document 1 (referring to Reference Document 1, the
Abstract, the specification, paragraphs 0045-0052 and 0058-0065, and FIGs. 3-4): when
performing packet exchange with the WLAN network, the UE triggers handoff from the current
WLAN network to a UTRAN, then the UE performs pre-registration to the UTRAN, and after
receiving a Pre-Registration Response message, the UE performs detachment from the WLAN
46
NSN677-1002, Page 261
Docket No. HW708564 Statement of Pre-Examination Search
network, and performs access to the target network. Based on the above, both the UE and the
network side disclosed in Reference Document 1 have the functions of performing handover and
performing detachment. Further, it is a common technical means in this field to adopt
independent functional modules to perform corresponding functions. Therefore, persons skilled
in the art can easily think of adopting independent functional modules to respectively perform
the handover function and the detachment function. Given that Claim 34 upon which Claim 35 is
dependent fails to have the inventive step, Dependent Claim 35 also fails to have the inventive
step set forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
22. Claim 36 seeks to protect a device for user detachment when a handover or change
occurs in a heterogeneous network. Reference Document 1 (US2006/0146803A1) has disclosed
a system for performing handoff of a UE from a WLAN network to a UMTS network, and has
specifically disclosed the following contents (referring to Reference Document 1, the Abstract,
the specification, paragraphs 0045-0052 and 0058-0065, and FIGs. 3-4): when performing packet
exchange with the WLAN network, the UE triggers handoff from the current WLAN network to
a UTRAN, then the UE performs pre-registration to the UTRAN, and after receiving a Pre-
Registration Response message, the UE performs detachment from the WLAN network, and
performs an access process to the UTRAN. Upon comparison, the distinguishing technical
features between the technical solution claimed in Claim 36 and the contents disclosed in
Reference Document 1 lie in that, (1) the network side detaches the UE from the source network;
and (2) Claim 36 discloses the second handover or change module and the second detachment
module. However, initiating the detachment by the user and initiating the detachment by the
network are common manners for initiating the detachment in this field. Since Reference
Document 1 has disclosed that the UE initiates the detachment process, persons skilled in the art
can easily think of initiating the detachment by the network. Therefore, the distinguishing
technical feature (1) is a common technical means in this field. As regards distinguishing
technical feature (2), the network side device disclosed in Reference Document 1 is able to
implement the handover and detachment process of the user. Further, it is a common technical
means in this field to adopt independent functional modules to perform corresponding functions.
Therefore, persons skilled in the art can easily think of adopting independent functional modules
to respectively perform the handover function and the detachment function. It is obvious for
persons skilled in the art to achieve the technical solution claimed in Claim 36 based on
47
NSN677-1002, Page 262
Docket No. HW708564 Statement of Pre-Examination Search
Reference Document 1 in combination with the common technical means. Claim 36 neither has
prominent substantive features nor represents a notable progress, and fails to have the inventive
step set forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
23. Claim 37 defines Claim 36. However, in the mobile communication field, the user
detachment is not required under all circumstances. For example, the detachment is not required
to be performed when the handover is performed on a dual mode mobile terminal. Therefore, in
order to perform different processing according to different circumstances, persons skilled in the
art can easily think of performing the determination before the detachment. Moreover, it is a
common technical means in this field to adopt independent functional modules to perform
corresponding functions. Given that Claim 36 upon which Claim 37 is dependent fails to have
the inventive step, Dependent Claim 37 also fails to have the inventive step set forth in
Paragraph 3 of Article 22 of the Patent Law of the PRC.
24. Claims 38 and 40 both define Claim 36. However, the user sends terminal capability
information to the network when the user accesses the network and the network unit transmits
access policy information when necessary, both of which are common technical means in this
field. In addition, it is a common technical means in this field to adopt independent functional
modules to perform corresponding functions. Given that Claim 36 upon which Claims 38 and 40
are dependent fails to have the inventive step, Claims 38 and 40 fail to have the inventive step set
forth in Paragraph 3 of Article 22 of the Patent Law of the PRC.
25. Claim 39 defines Claim 37. However, the user detachment in the 3GPP or non-3GPP
network is usually performed by an MME, GW, or home subscriber server (HSS) in the network.
In addition, it is a common technical means in this field to adopt independent functional modules
to perform corresponding functions. Given that Claim 37 upon which Claim 39 is dependent fails
to have the inventive step, Claim 39 also fails to have the inventive step set forth in Paragraph 3
of Article 22 of the Patent Law of the PRC.
26. Claim 41 seeks to protect a device for user detachment when a handover or change
occurs in a heterogeneous network. Reference Document 1 (US2006/0146803A1) has disclosed
a system for performing handoff of a UE from a WLAN network to a UMTS network, and has
specifically disclosed the following contents (referring to Reference Document 1, the Abstract,
the specification, paragraphs 0045-0052 and 0058-0065, and FIGs. 3-4): when performing packet
exchange with the WLAN network, the UE triggers handoff from the current WLAN network to
48
NSN677-1002, Page 263
Docket No. HW708564 Statement of Pre-Examination Search
a UTRAN, then the UE performs pre-registration to the UTRAN, and after receiving a Pre-
Registration Response message, the UE performs detachment from the WLAN network, and
performs an access process to the UTRAN. Upon comparison, the distinguishing technical
feature between the technical solution claimed in Claim 41 and the contents disclosed in
Reference Document 1 lies in the first handover or change module and the first detachment
module. The user terminal disclosed in Reference Document 1 is able to implement the handover
and detachment process of the user. Further, it is a common technical means in this field to adopt
independent functional modules to perform corresponding functions. Therefore, persons skilled
in the art can easily think of adopting independent functional modules to respectively perform
the handover function and the detachment function. It is obvious for persons skilled in the art to
achieve the technical solution claimed in Claim 41 based on Reference Document 1 in
combination with the common technical means. Claim 41 neither has prominent substantive
features nor represents a notable progress, and fails to have the inventive step set forth in
Paragraph 3 of Article 22 of the Patent Law of the PRC.
27. Claim 42 defines Claim 41. However, in the mobile communication field, the user
detachment is not required under all circumstances. For example, the detachment is not required
to be performed when the handover is performed on a dual mode mobile terminal. Therefore, in
order to perform different processing according to different circumstances, persons skilled in the
art can easily think of performing the determination before the detachment. Moreover, it is a
common technical means in this field to adopt independent functional modules to perform
corresponding functions. Given that Claim 41 upon which Claim 42 is dependent fails to have
the inventive step, Dependent Claim 42 also fails to have the inventive step set forth in
Paragraph 3 of Article 22 of the Patent Law of the PRC.
28. Claims 43 and 44 define Claim 41. However, the user sends terminal capability
information to the network when the user accesses the network and the network unit
transmits access policy information when necessary, both of which are common technical
means in this field. In addition, it is a common technical means in this field to adopt
independent functional modules to perform corresponding functions. Given that Claim 41
upon which Claims 43 and 44 are dependent fails to have the inventive step, Claims 43
and 44 fail to have the inventive step set forth in Paragraph 3 of Article 22 of the Patent
Law of the PRC.
49
NSN677-1002, Page 264
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11 February 2010 I Kell, Hans-Peter : adoN nr prixelpfk toxfkateixotbx. invent n : agfan- act pxtiiskall an, nt ;OW 17.e, .:*:?:re
: !*...Ztj !TN, 1:,,,I4c3 Oka Vrsk,..*ting: . ttaMna.:44 t:,4t*It..:.•t tx s>tt Kattaltat
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page: 2 of 2
52
NSN677-1002, Page 267
Docket No. HW708564 Statement of Pre-Examination Search
ANNEX TO THE EUROPEAN SEARCH REPORT ON EUROPEAN PATENT APPLICATION NO. EP 08 Th 3.U,S
This armee rigs tee patent ;amity mameemalatiag W. tee paeans ca le oted eh...we-ma-Waned Etwapeen s*w team The elemeela am es c:N.asaiesti .kr• the Ema:.asen Pateet Orete EuPtilk oz) to Esme‘wanlent Otf no way kat* ges *gage gerdcuiers•weelh miry !we.? rpfirt litx 418.1.11:N04e us infotrpatort.
WO 2007024115 M 01-03-2007 Ep 1938518 Al
11-02-2010
Pubftason rktte
02-07-2008
441)rai ifg &Mat farprt I Pit
AV :trn
•
Pater-elan* Higint ff$} liz
Palent clotrammt
E P 2007160 fit. 24-12-2008 KVE
rth
"ge thftin akiKini thin WIcfnlx : skeiv jrlezrw3 <0 to Empeae Paw Me, /2•V
53
NSN677-1002, Page 268
Docket No. HW708564 Statement of Pre-Examination Search
Mahan BUI eitto rg F4.11:3n 11507 shim Agrsgtasliors :t.3 ti bah:, re:
The uxarniniilion is Wing cartiect oat on the foilowinci apptication doeu eats
Descriotion, Pages
-;;;„:1. t'ik:i.lvo.ith entry info a regOnai pii3Se before tho,
Claims; Numbers
tik-td erity into the regiona phase. 0010re the EPO
Drawings, Sheets
fikstltNBtti witty into U mgion pAR,ie before triof PO
ma • ed r`a.mencled" by the appticant
Reference is made to the folIewi:n decurnents; the numbering MI be adhered to in the resit)! the procedure:
D1 "Technical specification group services and system aspects: (3PRS enhancements for EI-LITRA.N access (Reklase, 8) 3GPP TS 23.401 V1.1.8" 8RD GENERATION PARTNERSHIP PROJECT (3GPP), TECHNICA.t.SPEClfiCATIGN (TS), XX, XX, ifT.)nIinel no. 3(..;'iPP TS 28.401 V'.1.0.1 stuIy 20.07 (2007-07-01) . pages 1-78, )Poo25oai53 Retrieved from the Ititernet: LIRL:www.3gop.erg [retrieved on 2008-12-16)
02 WO 2007i024115 Al (KOREA ELECTRONICS TELECOMM [K.R]; CHEON [KR]; HO KWANG-HYUN D I March 2007 (2007-03-01)
EP 2 007 160 Al (NOKIA SIEMENS NETWORKS OY MI) 24 December 2008 (2008-12-24)
2 Clarify, Mide 84 EPC
2.1 Claim
Independent Ctaim 1 does not meet the requi -MSC! ArticIe 84 EPC re..prding clarity for the i0!1+ viriM) reasons:
2.1.1 Independent Claim 1 :mentions in the preamble a 3GPP network and a none-3GPP netwoek. in the. Wowing features di Ctaini I a source network s.nd a target network are mentioned and two method ste4-.* are defined ire which saki source and said target netwetk appew. It ja ot7t4 unclear whether
f).:5)1•11:3
54
NSN677-1002, Page 269
Docket No. HW708564 Statement of Pre-Examination Search
01.45.01 . in Anirs144*-1**. ClaS Of i;%:,:rrii 1 5,.' 7 Shoe F AK/kali:i: Ns:: t 2 F< 183 935..5
indeed four differgrit netwOrit.S. are present or whether me source andlor. the target network are of the 3GPP. or non-3‘3PP typo it is noted that originally filed dependent Claim 2 contains a dear formulation..
2_12 Moreover, Claim 1 uses eXpressions such aslionclover or change" and "handing ver or switc dna'. If is totially unclear, whether. 'to handover is different from "to switch' pr "to change" or whether sad atlditional expreSSions are merely redundant and can tie removed.. This objection actually applies to most Of the ether Claims as well.
2.1.3 Moreover, the $ec.'ond feature .intioduces Me term "altedwrzrk_sitiel', is it the 'side of the source network, or the side of the to iigial network, tir We ;de of the 3GPP network or the side of the non-3GPP network? Thls is totally unclear.
2_1.4 )rdependent Claire 1 is totaify silent with respect to .the .fact how it is determined hy the network element whether ttii de.tach the UE, i„e, the critenon/criteris I.V.s6.:d for Chia determination are not present in Claim 1.
2.2 Claim 3:
Dependent Claim 3 does not meet We requirements of Article 84 EPC regarding clarity .for the following ;roasons:
2.2.1 Dependent Claim 3 includes the inconsistent expressions 'bearer sources' (page 52, liner, 13 and 22) and 'bear sourc,es" (page 52, lines 15 and 24). Even if it is assumed that. tile expression "hear sources" is the result of a typing error and that "bearer sources" was intended, the definition e_)t said expression is totally Unclear.
2.3 Claim 8:
independent .Claim 8 does permit meet .the iegthroments of Article 84 .EPC. regarding clarity kr the following: reasons:
2.3,1 Independent Claim 8 is totally silent with respotit to the tact how it is. determined by the UE whether to detach from the source: network, i.e . t criterion/criteria. used for this deterinination are not present in Claim 8.
2.4 Claim 10:
Independent Claim 10 does not meet the requirements of Article. 34 E PC regarding clarity for the folloWihQ reasons.:
2.41 Independent Claim 10 does merely define that the network side is both adapted tiD handover UE {from a source to a target network) and to detach the UE from the source network.. However, .no connection between said two aspects is definet whether The .notion of detaching the LIE. from the source network is related to the handover action. Moreover, Claim 10 •va totaliy. silent
ksn. t 1 .:;.; TR;
55
NSN677-1002, Page 270
Docket No. HW708564 Statement of Pre-Examination Search
*atiois es33 A?1ecle3detAlt. Oatii, C.: f?.~74;m. 1 5 L ; Staff? ApsgiClttlw Ner. :lc 3 35 . DC0k, F,stsi8g C.:41,11150cle Sr"
with respect to the tact under viihich circumstances the UE is detached from the source network. i.e. whether .any criterion/criteria are used for determining whether to detach the UE not,
2.5 Claim 12:
€ndependent Ciaim 12 dor s. not meet the requirements of Article 84 EPC regarding clarity for the following reasons:
2,5.1 independent Claim 12 is dilrected ruder:is a device fer user detachment comprising a second tiandovef• En odute and a second detachment rnodute. From Fig.. 12 it is apparent, that the devic& el.airned En Claim 12 is in fact the "nelVorkPlement ofi thertetwork side" mentioned in Claim 1. Conarstent terminology should be used and Claim 12 accordingly revirorded, Moreover; the expression "wi;et.detachment" is inc.orreot since present application deals with UE .detactiment.
2.5,2 independent Claim 12 clues merely define that the device (networli element on the network side) comprises modules which are both adapted to handover a UE (from a seurrx to a target network) arld to detach the fiE, from the SOURM network, However, rill connection between said tic.) as:pects ts i.e. whether the action of detaching the UE from the source network is related to Me handover action, Moreover, Claim 12 is totally sifent with respect kti the fact under vvf-k.h circumstances the UE is detached nom the, source network. i.e. .whether stay onterionjsriteria tart:- used for de.termining •ivtristrier to .detach
UE s. r not
2.6 Claim 14:
Independent Claim 14 does not meet the requirements of Article 84 EPC regarding clarity for the following reasons:
Independent Claim 14 is. directed towards t device for user detachment comPlislog a first handover module and a first detachment modulo. From Fig, 12 Et is apparent., that the device diaimed in Claim 14 is in f a.ct the "iLla.' men toneti in Claim 1. ConSiSMrtt (Willnology should be uaed anfil Claim 14 aCCordingly reworded. Moreover, the expression "user:detachment" is Incorrect since the present application deals with LIE detachment,
2.6.2 thdependent Claim 14 does merely define that the device (UE) comprises. moduies which are both adapted to handover a it E dram a scarce to a target network) and to detach the LYE from the source network: However, no Exinnection between said two aspects is defined, L. whether the, action of detaching the UE from the source network is related to the nandover action. Moreover, laim 14 is totally silent with *SpOC1 to the fact under which circumstances UE is detached from the source network, i.e. whether any eriterionichteria are used for determining whether to detach the LE or not
56
NSN677-1002, Page 271
Docket No. HW708564 Statement of Pre-Examination Search
0,30.111 Blatt .Aoracelde-Nr. t);:ito 15E37 meek APPficatt'ean No' r) - ?..35 ri ost.R. rc,..•tou
Nov ay and inverttive Step, Article 52(1), 54(1), (2) and 56 EPC
Reparic Notwithstanding the wxlve clarity objections (Article 84 E PC) and i,nsofar zel said Cleitns can be understood, the ioilmesiing. assessment i > made:
31 Ctaim 1:
3,1,1 The appfitant shouid note that independent Claim 1 does not appeal to be novel (Artiste 54(1) (2) EPC) and to itIvoive an inventive step (Article 56 EPC) ',6s-A-vis document Dl arid is thus incit allowabie according to Article 52
) EPC.
The document Ell is regarded as being the elbsest prior art . to the subject-matter of Claim 1 and shows. an 'method for user. detachment when hartclovvr pLeh,ange occurs between a 3GPP rreta rf,arld non-',:(1)PP .rigtwortr,' (D1, page 45; par: 5,3,84, Met): 1-4) with aii the features as defined in Claim 1 al the qreset-tt European Patent ilapiisation.
handin Over of awitchitu a user equipment from a so§..irm riatw4-K, a target:network ,oiw 45, par, 5.3.8,4, lines 1.4)
- deter:Mining,* a network dement on a network side, whether to dktacti the uE f (11/1 the sopr.n. net,w^rk: if *Felac.."Nr) the LE from the source netwitir (Di. page 45.. par. 5.3.8,4, fines t-4)
Rematk. The Scenario of detaching a from a source network (i.e. update/ remove MM context end deieting the EPS bearers) in response to a 3(3 PP to non-36PP bandover is described as b6ng 'FPS" in Di. "FFS' means "fer further studies" in the context of 30PP standardization documents. This means that it was not yet decided at the time. o generating V1 ,1.0 of 3GPP TS 23.401 whether this Will be indeed imfAerhis,nted, However, We option was already" there.
3.1.2 As a consequence, Claim 1 does net meet the requirements of Article 54(1), (2) EPC in that its subltest-matter tacks .novelty and is thus not allowable (Article 52(1) EPC).
3.1.3 it is further noted Wet even if the App cent. woukt nteripret the disclosure cf Document Di in a siightiy different manner than the exa.minei has done in the above analysis, and based oh his, interpretations wmid come to the conolustc.-in that there are dfletennes between the subject-matter et present
57
NSN677-1002, Page 272
Docket No. HW708564 Statement of Pre-Examination Search
Dawn smi. move: •. oato For m :1.507 viciot is,p0cMion No' 09 -78 'A 835 .. 5 Dai.c3 keilaio.,: (..,.oriv:imii,,w,
Claim I and DI which: wouid then e:stabfish novelty (AMOe 54(1)., (2) .EPC), her these differences, even it ti, y could b ads,nowledged as suc# .,. would
only be of so minor nature that they could not be the baste for .establishing the orttsence. of any inventive, step (Article 56 E PO), ae 01 discloses .the same object and the same type of solution as the, presoht appricalori, i,i(•,c1c(airn I would, even with such a difference in interpretation, not meet the tequirements of Article 52(1) and 5:6 E PC.
3.1.4 it s further noted that also the above cited docurne.nt D2 appears to disclose the subjecHnatter c f independent Claim 1 and that therefore' Claim I lurtheimoic_,t lacks novelty and inventive step within the meaning of Article 54 (1), (2) and 56 EPC also vis-a-vis the disclosure of 02.
Reference is made in this respect 10 the foiliowing text passages of 112
02, abstract
(12, page 3, fines 10-13
02, page 9, fines 8-13
02, page 9, finef page t, line 19
02, Fig2
3.2 Claims 10 and 12:
3 The features of independent system Claim 10 and do 0c& Claim 12 correspond to the features of ;ndependent rnefhod Claim 1 and hence the arguments concerning iack .of novelty/inventive step as set out above apply equally to sald Claims 10 and 12, which does ihereipre efso not meet the requirements ot Art cle 54(1), (2) and 56 EPC. 'Claims 10 and 12 are thus not allowable (Article 52(1) EPC).
Claim 8.
3.3.1 The European patent Et ppiicatioa cited as 03 above published on 24,12.2008 was filed on 19.06.2007, .e. prior to the filing date of the present European Application, its content as filed therefore considered to be comprised in the slate el the art :relevant tr.3 the question of novelty, pursuant to Article 541:3) EPC.
This earlier aprAdation shows at the features of independent Claim 8, name y:
3 riVthed tot u:tlet detaOrnant when handdver 01;41:1Qp. r t41ars jtu, Lleterogeneou, ng:twork [0035H00501: Fig.2), comprising:
--inFtirat374_PY a use- e<9uTrri0M, handover r switching from e eouroe Qetwork to a„target nrAwdrk (D3. [0039110040T
58
NSN677-1002, Page 273
Docket No. HW708564 Statement of Pre-Examination Search
()MON Slat .A.no*Edry..-Nir: C3a91 F:51'.'M 1 ...E.r Shett Apacaiiol Na. 09 ia3 a35 . 5
N.,tiliso& n'
by the UE, whether to detach the UE from the solgogiletwork‘ if yea, deiachina thetlE. final the source network {D3. [004): Fig.2)
3.3.2 Thus, Da is prejudicial to the noveity of the subjectrmatter of independent Claim 8 of the present application (Article 54(1), 3) EPC).
3.13 Moree,ver, Claim 8 does not meet the requirements of Article 56 EPC regarding inventive step to the following reasoris
3.3.3.1 Document Di discloses that a FOS-initialed iJE. Detach procedure may be. implemented if a LE changes RAT (i.e. hangovers) from 3CIPP to non-30PP (DI, page 45, par. 5-34.4, knee 1-41.
Document Dl also discloses that this Detach procedure may be initiated by a UE, a MME or a HSS (DI, page 43, par 5.32.1, lines 10-14 Document D1 discloses on Dl, ixage 4$, tines 1-2 That death may be required if a UE attaches to a non-3CiPP network. Di furthermore discloses on D1, paw. 44, par. 53,82 how this LIE-initiated Detach procedure is tarried out
The sKilled person - based on this disclosure - would implement a LIE 1, Detach pl-Dce:dwe in the scenario of a 3GPP to non-3GPP handover if rocOred under the circumstances without exercising any inventive activity,
3.3.32 Independent Claim 8 does therefore riot meet the requirements Of Article 56 EPC: Claim 8 is thus rot allowable (Article 52(1) EPC).
3,1 Claim 14
The features of independent device Claim 14 correspond to the features: of independent method Claim 8 and hence the arguments concerning lack of noveltrinventive step as set out above apply equally to said Claim 14, which does therefore also 0 of nice 1 the requirements of Article 54(1). (3) and 56 EPC._ CIatnt 14 is thus not allowable (Article 52(1) EPC).
3.5 Claims 2-7, 9, 11,10, 15:
3.5.1 The additional features cif dependent Claims 2-7, 9, It, 13, 15 appear to and nothing novel (Article 54(1), (2) EPC) arielor nothing of inventive significance (Article Se EPC) to those otalms to which they are appended, as the addltional features Joixciduced by said :dependent claims refer only to rnhior implementing details which are disclosed or obviously derivable from the cited prior art refe.reneDS or fall within the general knowledge of a person sKillee in the art:
3.5.1,1 Claim 2 (first alternative feature lricluded in Claim 2):
59
NSN677-1002, Page 274
Docket No. HW708564
Statement of Pre-Examination Search
Datum Mat awe ;":1: 1,"ortii Sheet Date Ftw.lo4s
Awriekot54,0! Awkallsn i71 7 83 N-111An00
1, Ave 45, par. 5.3,6,4, tines 1-4
2, page 9, line 21 - page 11, line 19 and D2, Fig2
3.5.1„2 Claim 3:
minor implementing detail in the light of DI, pages 43-46,. par 5,18, 5.34. /, 5..3.8.2, 5.3.8,3, 5.3.84
Claim 4:
iMpietnenting detail In the light of D1, page 46, par. 5.a8..4, Fig. _.)a.J.3,4-1.: Message: Cancel Location, irrle4 1-5 -
3.5.1.4 Claims 5-7:
niir/or irriptamenting d fall
3.5.1.5 Maim 9::
Minal. implenx4ntind detail
Claim:11.:
cf. aairn 12
3.5.1,7 Claims 13 and 15:
minor implemenling detail
3.5.2 Hence, the subject matter of dependen Claims 2-7, 9, 13, 15 $ not aliowahle within the meaning of Article 52.01 E
4 ln view of the cited prior ad, it is rot cleat at pte.$ent which part cr the application couid serve as a basis for a ne,,,v, allowable claim Should the appilcant ri.everthetess regard some particular mater as patentable, he is invited to We a new :set Di claims directed :awards such matter with suitable supporting argurnehtti.
The -applicant ishould indicate in the letter of reply the difference af the subject:- matter of the new claim vis-a-vis the state of the art and the zigrtjficanett thereot,
When submitting amendments, the appitn rt ;should atecl, take the, opportunity to attend to the foilowing matter:
5,1 To meet the requirements of Rule 42(1)(13) EPC„ the relevant prior art, t.r . the documents D1 and D2, sticutd be identitied -in the description. and the relevaqt background art disciose.d therein 'should be brielly discussed,
52. Any independent Claim should to hi the proper illvo-part "characterize" form recommended by Rule 43(1) EPC, having a pr: ambie that correctly irelleets the nearest prior art Dl
60
NSN677-1002, Page 275
Docket No. HW708564 Statement of Pre-Examination Search
Itgsg atm Ame1M-Nr Da* ef P,)rm 1507 silkm Appksaken No. 08 783 , *au., Fwiti4 uk-onancx
5. The opening pan of the descrip,fion should be brought into agreement with the new Claims to be filed (Rule 42(1)(c) EPC.),
5.4
The features of the claims should be provided with reference signs placed in parentheses to increase the intelltgitaty el the claims (Fttde 437) EPC), This applies to both the preamble arid characterlaing portion (see Guidelines C 1114 4.19).
5.5
Regarding the use of abbreviations (UE:. MME, non-3GPP CAW, PUN GW, RAU) for features repeater.* referred to In €t cat ports of the Claims,
it is necessary to delete the parentheses which enclose those. abbreviations the first Wile they are mentioned (ie,g, 'user equipment 1.1E"or 4mobifty management entity MME"), in order to avoid mi.5nterpreta On as to th6r limiting effect (Article 84 EPC and Guidelines, Cher,Iter
5.6 The general statement in the descriptlon on pages 49/50. par. 103151: " a.t.s' ended thW: the pre6ecrt Lnventin modifIcatns
...Rd tnj,8 inentm>2.1 pnwided thE.-3y fall th.,a fllowlng claim and ther.
ellaitva irit,") implies that the subject-matter for which protection. is sought may be different to that defined by the claims, thereby rendering the scope of the ddims unclear (Article. 84 E PC), This statement should therefore be deteted to remove this inconsistency (Guidelines, Chapter C. 4.4).
5.7 The applicant is requested to effect the amen:tin-Dents by filing replacement pages for only those pages which have been emended, L.Jrinecessary recasting of the description shoutd be avoided. An amended ab,stiact is not required. The applicant should also take account of the requirements of Rule 50(1) EPC. if hand-written amendments are submitted, they should be clearly legible for the printer,
5.8 ln order to facilitate the examinabon of the conformity of the amended application with the requirements of Article 123(2. ) EPC, the applicant is l'iquestKI to, clearly idettly the amendments carried out, irrespective of wnether they concern amendments by, addition., replacement or deletion, and to indicate the passages CA the application as filed on which these amendments are based. Speciai we should be taken to avoid giving rise to further objections by The knadvertent addition of subject-matter (Article 123(2) EPC't
61
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Docket No. HW708564 Statement of Pre-Examination Search
E. STATEMENT OF GOOD FAITH
All statements above in support of the petition to make special are based on a good faith
belief that the search was conducted in compliance with the requirements of this rule.
Respectfully submitted,
/John K. Winn/ John K. Winn, Registration No. 58,579 LEYDIG, VOLT & MAYER, LTD. Two Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
Date: June 27, 2011
62
NSN677-1002, Page 277
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
Patent Application No.
Confirmation No.
Applicant: WU et al.
Filed: June 27, 2011
TC/AU:
Examiner:
Docket No. HW708564 (Client Ref. No. 81356140US16)
Customer No.: 77399
Commissioner for Patents P.O. Box 1450 Alexandria, VA 22313-1450
ACCELERATED EXAMINATION SUPPORT DOCUMENT
Dear Sir:
This Accelerated Examination Support Document is provided in support of the Petition
for Accelerated Examination filed herewith. The following sections are provided herewith:
A. References from Accompanying IDS begins on page 2 of this paper.
B. Identification of the Limitation of the Claims Disclosed by the Cited References
begins on page 2 of this paper.
C. Detailed Explanation of Patentability begins on page 27 of this paper.
D. Statement of Utility begins on page 28 of this paper.
E. Showing of Support of Each Claim Limitation begins on page 29 of this paper.
F. References that may be Disqualified as Prior Art begins on page 53 of this paper.
NSN677-1002, Page 278
Docket No. HW708564 Accelerated Examination Support Document
A. References from Accompanying IDS
This support document is filed concurrently with an Information Disclosure Statement,
which lists the following references:
1. U.S. Patent Publication No. 2009/0286527 (Cheon)
2. U.S. Patent Publication No. 2006/0153124 (Nishi)
3. U.S. Patent Publication No. 2006/0146803 (Bae)
4. U.S. Patent Publication No. 2010/0135245 (Zhu)
5. 3GPP TS 23.401 V1.1.0 (3GPP TS)
B. Identification of the Limitation of the Claims Disclosed by the Cited References
1. U.S. Patent Publication No. 2009/0286527
Independent Claim 1
U.S. Patent Publication No. 2009/0286527 by Cheon (hereinafter "Cheon") describes a
method for supporting a seamless service when a mobile station moves between a 3GPP
network and a non-3GPP network (see Cheon, at Abstract).
Further, Cheon discloses that, at paragraph [0042], when the mobile station 100 of the
3GPP subscriber accessed the 3GPP network 200, the PDP address allocated to the mobile
station 100 is stored at the HLR/AAA 240; at paragraph [0043], the mobile station moves from
the 3GPP network to the non-3GPP network; at paragraphs [0044] and [0045], the IWG 250
receives the PDP address previously allocated by the GGSN 230 from the HLR/AAA 240 and
forms a tunnel 320 to the mobile station 100 by providing the received PDP address to the
mobile station 100; at paragraphs [0049], the GGSN 230 transmits the PDP context delete
request message to the SGSN 220 so as to cancel the GRPS session (see Cheon, at paragraphs
[0038]-[0049], Fig. 1 and Fig. 2).
Independent claim 1 is not anticipated by Cheon at least because Cheon fails to disclose
the steps of: receiving, by a mobility management entity (MME) of the 3GPP network, a delete
bearer request sent by a serving gateway (GW) of the 3GPP network which carries a cause
information element (IE); wherein the cause IE indicates the UE handovers from the 3GPP
2
NSN677-1002, Page 279
Docket No. HW708564 Accelerated Examination Support Document
network to the non-3GPP network; detaching, by the MME, the UE from the 3GPP network
when all the bearer resources of the UE are deleted.
It is obvious to one of ordinary skill in the art that Cheon only related to delete the bear
in the source network, but fails to disclose that the MME receives a delete bearer request which
carries a cause information element (IE); wherein the cause IE indicates the UE handovers from
the 3GPP network to the non-3GPP network. In addition, Choen also fails to disclose that the
MME detaches the UE from the 3GPP network when all the bearer resources of the UE are
deleted.
Dependent Claim 2
Cheon disclosed that at paragraphs [0049], the GGSN 230 transmits the PDP context
delete request message to the SGSN 220 so as to cancel the GRPS session.
Dependent claim 2 is not anticipated by Cheon at least because it depends from claim 1.
Furthermore, Cheon fails to disclose that the cause IE is set to "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network."
Dependent Claim 3
Cheon disclosed that at paragraphs [0049], the GGSN 230 transmits the PDP context
delete request message to the SGSN 220 so as to cancel the GRPS session.
Dependent claim 3 is not anticipated by Cheon at least because it depends from claim 2.
Furthermore, Cheon fails to disclose "setting, by a packet data network gateway (PDN GW),
the cause IE to "UE' s accessing RAT changed from a 3GPP network to a non-3GPP network";
sending, by the PDN GW, the delete bearer request message carrying the cause IE to the
serving GW; and sending, by the serving GW, the delete bearer request message carrying the
cause IE to the MME."
Dependent Claim 4
Dependent claim 4 is not anticipated by Cheon at least because it depends from claim 1.
Furthermore, Cheon fails to disclose "detaching, by the MME, the UE from the 3GPP network
without sending a detach request message to the UE."
3
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Docket No. HW708564 Accelerated Examination Support Document
Dependent Claim 5
Dependent claim 5 is not anticipated by Cheon at least because it depends from claim 1.
Furthermore, Cheon fails to disclose "detaching, by the MME, the UE from the 3GPP network
if a terminal capability of the UE is single radio capability."
Dependent Claim 6
Dependent claim 6 is not anticipated by Cheon at least because it depends from claim 1.
Furthermore, Cheon fails to disclose "detaching, by the MME, the UE from the 3GPP network
if access policy information of an operator is single radio access."
Dependent Claim 7
Dependent claim 7 is not anticipated by Cheon at least because it depends from claim 1.
Furthermore, Cheon fails to disclose "detaching, by the MME, the UE from the 3GPP network
if a terminal capability of the UE is dual radio capability and access policy information of an
operator is single radio access; or if the terminal capability of the UE is single radio capability
and the access policy information of the operator is dual radio access; or if the terminal
capability of the UE is the single radio capability and the access policy information of the
operator is the single radio access."
Independent Claim 8
U.S. Patent Publication No. 2009/0286527 by Cheon (hereinafter "Cheon") describes a
method for supporting a seamless service when a mobile station moves between a 3GPP
network and a non-3GPP network (see Cheon, at Abstract).
Further, Cheon disclosed that, at paragraph [0042], when the mobile station 100 of the
3GPP subscriber accessed the 3GPP network 200, the PDP address allocated to the mobile
station 100 is stored at the HLR/AAA 240; at paragraph [0043], the mobile station moves from
the 3GPP network to the non-3GPP network; at paragraphs [0044] and [0045], the IWG 250
receives the PDP address previously allocated by the GGSN 230 from the HLR/AAA 240 and
forms a tunnel 320 to the mobile station 100 by providing the received PDP address to the
mobile station 100; at paragraphs [0049], the GGSN 230 transmits the PDP context delete
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request message to the SGSN 220 so as to cancel the GRPS session (see Cheon, paragraphs
[0038]-[0049], Fig. 1 and Fig. 2).
Independent claim 8 is not anticipated by Cheon at least because Cheon fails to disclose
that a network device is configured to receive a delete bearer request sent by a serving gateway
(GW) of a 3GPP network when a handover from the 3GPP network to a non-3GPP network
occurs, wherein the delete bearer request carries a cause information element (IE) which
indicates a user equipment handovers from the 3GPP network to the non-3GPP network; and
detach the UE from the 3GPP network when all the bearer resources of the UE are deleted.
It is obvious to one of ordinary skill in the art that Cheon only related to delete the bear
in the source network, but fails to disclose that the network device is configured to receive a
delete bearer request sent by a serving gateway (GW) of a 3GPP network when a handover
from the 3GPP network to a non-3GPP network occurs, wherein the delete bearer request
carries a cause information element (IE) which indicates a user equipment handovers from the
3GPP network to the non-3GPP network. In addition, Choen also fails to disclose that the
network device is configured to detach the UE from the 3GPP network when all the bearer
resources of the UE are deleted.
Dependent Claim 9
Cheon discloses that at paragraphs [0049], the GGSN 230 transmits the PDP context
delete request message to the SGSN 220 so as to cancel the GRPS session.
Dependent claim 9 is not anticipated by Cheon at least because it depends from claim 7.
Furthermore, Cheon fails to disclose that the cause IE is set to "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network."
Dependent Claim 10
Cheon disclosed that at paragraphs [0049], the GGSN 230 transmits the PDP context
delete request message to the SGSN 220 so as to cancel the GRPS session.
Dependent claim 10 is not anticipated by Cheon at least because it depends from claim
9. Furthermore, Cheon fails to disclose that the delete bearer request is sent from a packet data
network gateway to the network device via the serving gateway, wherein the cause IE is set to
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"UE's accessing RAT changed from a 3GPP network to a non-3GPP network" by the packet
data network gateway."
Dependent Claim 11
Dependent claim 11 is not anticipated by Cheon at least because it depends from claim
8. Furthermore, Cheon fails to disclose the network device is configured to detach the UE from
the 3GPP network without sending a detach request message to the UE.
Dependent Claim 12
Dependent claim 12 is not anticipated by Cheon at least because it depends from claim
8. Furthermore, Cheon fails to disclose the network device is configured to detach the UE from
the 3GPP network if a terminal capability of the UE is single radio capability.
Dependent Claim 13
Dependent claim 13 is not anticipated by Cheon at least because it depends from claim
8. Furthermore, Cheon fails to disclose the network device is configured to detach the UE from
the 3GPP network if access policy information of an operator is single radio access.
Dependent Claim 14
Dependent claim 14 is not anticipated by Cheon at least because it depends from claim
8. Furthermore, Cheon fails to disclose the network device is configured to detach the UE from
the 3GPP network if a terminal capability of the UE is dual radio capability and access policy
information of an operator is single radio access; or if the terminal capability of the UE is
single radio capability and the access policy information of the operator is dual radio access; or
if the terminal capability of the UE is the single radio capability and the access policy
information of the operator is the single radio access.
2. U.S. Patent Publication No. 2006/0153124 (Nishi)
Independent Claim 1
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U.S. Patent Publication No. 2006/0153124 by Nishi (hereinafter "Nishi") describes a
method for how to maintaining consistent network connections when mobile station handovers
from GPRS network to WLAN network.
Further, Nishi disclosed that at steps 1-6, MT enters an GPRS access network, the client
connects to the GPRS access network which provides connectivity to SGSN using a primary
PDP context which is preferably requested by the MT; at steps 7-11, the MT handovers to a
WLAN access network from the GPRS access network, the client connects to the WLAN
access network by a secondary PDP context which has the same IP address with the primary
PDP context; at step 12, the client has two flow paths to the same GGSN with different priority
levels and there is no change in the IP address of the client, thus no effect to the higher layer
protocols; at steps 13-17, when the MT roams out of the WLAN hotspot, M-WSG sends a
delete PDP context request, the GGSN removes the secondary PDP context from its context
table, M-WSG cleans up associated session and GTP context information (see Nishi, at
paragraphs [0044]-[0067], Fig. 2 and Fig. 3).
Independent claim 1 is not anticipated by Nishi at least because Nishi fails to disclose
steps of: receiving, by a mobility management entity (MME) of the 3GPP network, a delete
bearer request sent by a serving gateway (GW) of the 3GPP network which carries a cause
information element (IE); wherein the cause IE indicates the UE handovers from the 3GPP
network to the non-3GPP network; detaching, by the MME, the UE from the 3GPP network
when all the bearer resources of the UE are deleted.
It is obvious to one of ordinary skill in the art that Nishi only discloses: when the MT
roams out of the WLAN hotspot, M-WSG sends a delete PDP context request, the secondary
PDP context which is established when the MT accesses the WLAN. But Nishi fails to disclose
that the MME receives a delete bearer request which carries a cause information element (IE);
wherein the cause IE indicates the UE handovers from the 3GPP network to the non-3GPP
network; the MME delete bearer resources of the UE. In addition, Nishi also fails to disclose
that the MME detach the UE from the 3GPP network when all the bearer resources of the UE
are deleted.
Dependent Claim 2
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Nishi disclosed that at paragraphs [0063], M-WSG sends a delete PDP context request
with the context parameters.
Dependent claim 2 is not anticipated by Nishi at least because it depends from claiml.
Furthermore, Nishi fails to disclose that the cause IE is set to "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network."
Dependent Claim 3
Nishi disclosed that at paragraphs [0063], M-WSG sends a delete PDP context request
with the context parameters.
Dependent claim 3 is not anticipated by Nishi at least because it depends from claim 2.
Furthermore, Nishi fails to disclose "setting, by a packet data network gateway (PDN GW), the
cause IE to "UE's accessing RAT changed from a 3GPP network to a non-3GPP network";
sending, by the PDN GW, the delete bearer request message carrying the cause IE to the
serving GW; and sending, by the serving GW, the delete bearer request message carrying the
cause IE to the MME."
Dependent Claim 4
Dependent claim 4 is not anticipated by Nishi at least because it depends from claim 1.
Furthermore, Nishi fails to disclose "detaching, by the MME, the UE from the 3GPP network
without sending a detach request message to the UE."
Dependent Claim 5
Dependent claim 5 is not anticipated by Nishi at least because it depends from claim 1.
Furthermore, Nishi fails to disclose "detaching, by the MME, the UE from the 3GPP network if
a terminal capability of the UE is single radio capability."
Dependent Claim 6
Dependent claim 6 is not anticipated by Nishi at least because it depends from claim 1.
Furthermore, Nishi fails to disclose "detaching, by the MME, the UE from the 3GPP network if
access policy information of an operator is single radio access."
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Dependent Claim 7
Dependent claim 7 is not anticipated by Nishi at least because it depends from claim 1.
Furthermore, Nishi fails to disclose "detaching, by the MME, the UE from the 3GPP network if
a terminal capability of the UE is dual radio capability and access policy information of an
operator is single radio access; or if the terminal capability of the UE is single radio capability
and the access policy information of the operator is dual radio access; or if the terminal
capability of the UE is the single radio capability and the access policy information of the
operator is the single radio access."
Independent Claim 8
U.S. Patent Publication No. 2006/0153124 by Nishi (hereinafter "Nishi") describes a
method for how to maintaining consistent network connections when mobile station handovers
from GPRS network to WLAN network.
Further, Nishi disclosed that at steps 1-6, MT enters an GPRS access network, the client
connects to the GPRS access network which provides connectivity to SGSN using a primary
PDP context which is preferably requested by the MT; at steps 7-11, the MT handovers to a
WLAN access network from the GPRS access network, the client connects to the WLAN
access network by a secondary PDP context which has the same IP address with the primary
PDP context; at step 12, the client has two flow paths to the same GGSN with different priority
levels and there is no change in the IP address of the client, thus no effect to the higher layer
protocols; at steps 13-17, when the MT roams out of the WLAN hotspot, M-WSG sends a
delete PDP context request, the GGSN removes the secondary PDP context from its context
table, M-WSG cleans up associated session and GTP context information (see Nishi, at
paragraphs [0044]-[0067], Fig. 2 and Fig. 3).
Independent claim 8 is not anticipated by Nishi at least because Nishi fails to disclose
that a network device is configured to receive a delete bearer request sent by a serving gateway
(GW) of a 3GPP network when a handover from the 3GPP network to a non-3GPP network
occurs, wherein the delete bearer request carries a cause information element (IE) which
indicates a user equipment handovers from the 3GPP network to the non-3GPP network; and
detach the UE from the 3GPP network when all the bearer resources of the UE are deleted.
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It is obvious to one of ordinary skill in the art that Nishi only discloses: when the MT
roams out of the WLAN hotspot, M-WSG sends a delete PDP context request, the secondary
PDP context which is established when the MT accesses the WLAN. But Nishi fails to disclose
that the network device is configured to receive a delete bearer request sent by a serving
gateway (GW) of a 3GPP network when a handover from the 3GPP network to a non-3GPP
network occurs, wherein the delete bearer request carries a cause information element (IE)
which indicates a user equipment handovers from the 3GPP network to the non-3GPP network.
In addition, Nishi also fails to disclose that the network device is configured to detach the UE
from the 3GPP network when all the bearer resources of the UE are deleted.
Dependent Claim 9
Nishi disclosed that at paragraphs [0063], M-WSG sends a delete PDP context request
with the context parameters.
Dependent claim 9 is not anticipated by Nishi at least because it depends from claim 8.
Furthermore, Nishi fails to disclose that the cause IE is set to "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network."
Dependent Claim 10
Nishi disclosed that at paragraphs [0063], M-WSG sends a delete PDP context request
with the context parameters.
Dependent claim 10 is not anticipated by Nishi at least because it depends from claim 9.
Furthermore, Nishi fails to disclose that the delete bearer request is sent from a packet data
network gateway to the network device via the serving gateway, wherein the cause IE is set to
"UE's accessing RAT changed from a 3GPP network to a non-3GPP network" by the packet
data network gateway."
Dependent Claim 11
Dependent claim 11 is not anticipated by Nishi at least because it depends from claim 8.
Furthermore, Nishi fails to disclose the network device is configured to detach the UE from the
3GPP network without sending a detach request message to the UE.
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Dependent Claim 12
Dependent claim 12 is not anticipated by Nishi at least because it depends from claim 8.
Furthermore, Nishi fails to disclose the network device is configured to detach the UE from the
3GPP network if a terminal capability of the UE is single radio capability.
Dependent Claim 13
Dependent claim 13 is not anticipated by Nishi at least because it depends from claim 8.
Furthermore, Nishi fails to disclose the network device is configured to detach the UE from the
3GPP network if access policy information of an operator is single radio access.
Dependent Claim 14
Dependent claim 14 is not anticipated by Nishi at least because it depends from claim 8.
Furthermore, Nishi fails to disclose the network device is configured to detach the UE from the
3GPP network if a terminal capability of the UE is dual radio capability and access policy
information of an operator is single radio access; or if the terminal capability of the UE is
single radio capability and the access policy information of the operator is dual radio access; or
if the terminal capability of the UE is the single radio capability and the access policy
information of the operator is the single radio access.
3. U.S. Patent Publication No. 2006/0146803 (Bae)
Independent Claim 1
U.S. Patent Publication No. 2006/0146803 by Bae (hereinafter "Bae") describes a
method for providing fast, seamless handoff during WLAN-UMTS interworking. The method
performs pre-registration and pre-authentication processed before occurrence of handoff in
order to solve the delay problem occurring during handoff from a WLAN network to a UMTS
network (see Bae, at Summary of the invention, and Abstract).
Further, Bae discloses at step 304, the UE 201 delivers a pre-registration Request
message for requesting pre-authentication and pre-registration to an SGSN 208 via a GGSN
209 of a UMTS network 205 through a WLAN AN 210; at step 318, GGSN 209 transmits a
pre-registration Response message to the UE 201 via the WLAN AN 210 to inform the UE 201
of completion of the pre-authentication and pre-registration process; at step 320, the UE 201
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performs detachment from the WLAN AN 210 through an AP 202, and then performs L2
handoff to the UMTS network 250 (UE movement) (see Bae, at paragraphs [0045]-[0052], and
Fig3).
Independent claim 1 is not anticipated by Bae at least because Bae fails to disclose steps of:
receiving, by a mobility management entity (MME) of the 3GPP network, a delete bearer request
sent by a serving gateway (GW) of the 3GPP network which carries a cause information element
(IE), wherein the cause IE indicates the UE handovers from the 3GPP network to the non-3GPP
network; deleting, by the MME, bearer resources of the UE; detaching, by the MME, the UE
from the 3GPP network when all the bearer resources of the UE are deleted.
It is obvious to one of ordinary skill in the art that Bae discloses that after completion of the
pre-authentication and pre-registration process, the UE 201 performs detachment from the
WLAN AN 210 through an AP 202, and then performs handoff to the UMTS network 250, but
fails to disclose that the MME receives a delete bearer request which carries a cause information
element (IE); wherein the cause IE indicates the UE handovers from the 3GPP network to the
non-3GPP network; and the MME deletes bearer resources of the UE. In addition, Bae also fails
to disclose the MME detaches the UE from the 3GPP network when all the bearer resources of
the UE are deleted.
Dependent Claim 2
Bae discloses that at step 318, GGSN 209 transmits a pre-registration Response
message to the UE 201 via the WLAN AN 210 to inform the UE 201 of completion of the pre-
authentication and pre-registration process; at step 320, the UE 201 performs detachment from
the WLAN AN 210 through an AP 202 (see Bae, at paragraph [0052]).
Dependent Claim 2 is not anticipated by Bae at least because it depends from claiml.
Furthermore, Bae fails to disclose that the cause IE is set to "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network."
Dependent Claim 3
Bae discloses that at step 318, GGSN 209 transmits a pre-registration Response
message to the UE 201 via the WLAN AN 210 to inform the UE 201 of completion of the pre-
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authentication and pre-registration process; at step 320, the UE 201 performs detachment from
the WLAN AN 210 through an AP 202 (see Bae, at paragraph [0052]).
Dependent claim 3 is not anticipated by Bae at least because it depends from claim 2.
Furthermore, Bae fails to disclose "setting, by a packet data network gateway (PDN GW), the
cause IE to "UE' s accessing RAT changed from a 3GPP network to a non-3GPP network";
sending, by the PDN GW, the delete bearer request message carrying the cause IE to the
serving GW; and sending, by the serving GW, the delete bearer request message carrying the
cause IE to the MME."
Dependent Claim 4
Dependent claim 4 is not anticipated by Bae at least because it depends from claim 1.
Furthermore, Bae fails to disclose "detaching, by the MME, the UE from the 3GPP network
without sending a detach request message to the UE."
Dependent Claim 5
Dependent claim 5 is not anticipated by Bae at least because it depends from claim 1.
Furthermore, Bae fails to disclose "detaching, by the MME, the UE from the 3GPP network if a
terminal capability of the UE is single radio capability."
Dependent Claim 6
Dependent claim 6 is not anticipated by Bae at least because it depends from claim 1.
Furthermore, Bae fails to disclose "detaching, by the MME, the UE from the 3GPP network if
access policy information of an operator is single radio access."
Dependent Claim 7
Dependent claim 7 is not anticipated by Bae at least because it depends from claim 1.
Furthermore, Bae fails to disclose "detaching, by the MME, the UE from the 3GPP network if a
terminal capability of the UE is dual radio capability and access policy information of an
operator is single radio access; or if the terminal capability of the UE is single radio capability
and the access policy information of the operator is dual radio access; or if the terminal
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capability of the UE is the single radio capability and the access policy information of the
operator is the single radio access."
Independent Claim 8
U.S. Patent Publication No. 2006/0146803 by Bae (hereinafter "Bae") describes a
method for providing fast, seamless handoff during WLAN-UMTS interworking. The method
performs pre-registration and pre-authentication processed before occurrence of handoff in
order to solve the delay problem occurring during handoff from a WLAN network to a UMTS
network (see Bae, at Summary of the invention, and Abstract).
Further, Bae discloses at step 304, the UE 201 delivers a pre-registration Request
message for requesting pre-authentication and pre-registration to an SGSN 208 via a GGSN
209 of a UMTS network 205 through a WLAN AN 210; at step 318, GGSN 209 transmits a
pre-registration Response message to the UE 201 via the WLAN AN 210 to inform the UE 201
of completion of the pre-authentication and pre-registration process; at step 320, the UE 201
performs detachment from the WLAN AN 210 through an AP 202, and then performs L2
handoff to the UMTS network 250 (UE movement) (see Bae, at paragraphs [0045]-[0052], and
Fig3).
Independent claim 8 is not anticipated by Bae at least because Bae fails to disclose that a
network device is configured to receive a delete bearer request sent by a serving gateway (GW)
of a 3GPP network when a handover from the 3GPP network to a non-3GPP network occurs,
wherein the delete bearer request carries a cause information element (IE) which indicates a user
equipment handovers from the 3GPP network to the non-3GPP network; and detach the UE from
the 3GPP network when all the bearer resources of the UE are deleted.
It is obvious to one of ordinary skill in the art that Bae discloses that after completion of
the pre-authentication and pre-registration process, the UE 201 performs detachment from the
WLAN AN 210 through an AP 202, and then performs handoff to the UMTS network 250, but
fails to disclose that the network device is configured to receive a delete bearer request sent by
a serving gateway (GW) of a 3GPP network when a handover from the 3GPP network to a non-
3GPP network occurs, wherein the delete bearer request carries a cause information element
(IE) which indicates a user equipment handovers from the 3GPP network to the non-3GPP
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network. In addition, Bae also fails to disclose that the network device is configured to detach
the UE from the 3GPP network when all the bearer resources of the UE are deleted.
Dependent Claim 9
Bae discloses that at step 318, GGSN 209 transmits a pre-registration Response
message to the UE 201 via the WLAN AN 210 to inform the UE 201 of completion of the pre-
authentication and pre-registration process; at step 320, the UE 201 performs detachment from
the WLAN AN 210 through an AP 202 (see Bae, at paragraph [0052]).
Dependent claim 8 is not anticipated by Bae at least because it depends from claim 8.
Furthermore, Bae fails to disclose that the cause IE is set to "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network."
Dependent Claim 10
Bae discloses that at step 318, GGSN 209 transmits a pre-registration Response
message to the UE 201 via the WLAN AN 210 to inform the UE 201 of completion of the pre-
authentication and pre-registration process; at step 320, the UE 201 performs detachment from
the WLAN AN 210 through an AP 202 (paragraph [0052]).
Dependent claim 10 is not anticipated by Bae at least because it depends from claim 9.
Furthermore, Bae fails to disclose that the delete bearer request is sent from a packet data
network gateway to the network device via the serving gateway, wherein the cause IE is set to
"UE's accessing RAT changed from a 3GPP network to a non-3GPP network" by the packet
data network gateway."
Dependent Claim 11
Dependent claim 11 is not anticipated by Bae at least because it depends from claim 8.
Furthermore, Bae fails to disclose the network device is configured to detach the UE from the
3GPP network without sending a detach request message to the UE.
Dependent Claim 12
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Dependent claim 12 is not anticipated by Bae at least because it depends from claim 8.
Furthermore, Bae fails to disclose the network device is configured to detach the UE from the
3GPP network if a terminal capability of the UE is single radio capability.
Dependent Claim 13
Dependent claim 13 is not anticipated by Bae at least because it depends from claim 8.
Furthermore, Bae fails to disclose the network device is configured to detach the UE from the
3GPP network if access policy information of an operator is single radio access.
Dependent Claim 14
Dependent claim 14 is not anticipated by Bae at least because it depends from claim 8.
Furthermore, Bae fails to disclose the network device is configured to detach the UE from the
3GPP network if a terminal capability of the UE is dual radio capability and access policy
information of an operator is single radio access; or if the terminal capability of the UE is
single radio capability and the access policy information of the operator is dual radio access; or
if the terminal capability of the UE is the single radio capability and the access policy
information of the operator is the single radio access.
4. U.S. Patent Publication No. 2010/0135245
Independent Claim 1
U.S. Patent Publication No. 2010/0135245 by Zhu (hereinafter "Zhu") describes a
method for avoiding resource being released mistakenly during tracking area update or
handover process (see Zhu, at Abstract).
Further, Zhu discloses at step 302, if the target MME determines to select a new
Serving GW, sending notification message to the original MME by the target MME to indicate
that the target MME has selected a new Serving GW; at step 303, after the original MME
determines that Serving GW has changed, sending a request for deleting bearer context to the
old Serving GW by the original MME (see Zhu, at paragraphs [0041]40043], [0058]-[0061],
[0078]-[0082], [0095]40098], Fig. 3, Fig. 4, Fig. 5, and Fig. 6).
Independent claim 1 is not anticipated by Zhu at least because Zhu fails to disclose steps of:
receiving, by a mobility management entity (MME) of the 3GPP network, a delete bearer request
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sent by a serving gateway (GW) of the 3GPP network which carries a cause information element
(IE), wherein the cause IE indicates the UE handovers from the 3GPP network to the non-3GPP
network; deleting, by the MME, bearer resources of the UE; detaching, by the MME, the UE
from the 3GPP network when all the bearer resources of the UE are deleted.
It is obvious to one of ordinary skill in the art that Zhu discloses that the target MME
sends a notification message to the original MME when the target MME determines to select a
new Serving GW. The original MME determines that Serving GW has changed after receiving
the notification message, and sends a request for deleting bearer context to the old Serving GW.
But Zhu fails to disclose that the MME receives a delete bearer request which carries a cause
information element (IE); wherein the cause IE indicates the UE handovers from the 3GPP
network to the non-3GPP network; and the MME deletes bearer resources of the UE. In addition,
Zhu also fails to disclose the MME detaches the UE from the 3GPP network when all the bearer
resources of the UE are deleted.
Dependent Claim 2
Zhu discloses that at step 302, if the target MME determines to select a new Serving
GW, sending notification message to the original MME by the target MME to indicate that the
target MME has selected a new Serving GW (see Zhu, at paragraphs [0041]-[0043]).
Dependent claim 2 is not anticipated by Ba at least because it depends from claiml.
Furthermore, Zhu fails to disclose that the cause IE is set to "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network."
Dependent Claim 3
Zhu discloses that at step 302, if the target MME determines to select a new Serving
GW, sending notification message to the original MME by the target MME to indicate that the
target MME has selected a new Serving GW (see Zhu, at paragraphs [0041]-[0043]).
Dependent claim 3 is not anticipated by Zhu at least because it depends from claim 2.
Furthermore, Zhu fails to disclose "setting, by a packet data network gateway (PDN GW), the
cause IE to "UE's accessing RAT changed from a 3GPP network to a non-3GPP network";
sending, by the PDN GW, the delete bearer request message carrying the cause IE to the
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serving GW; and sending, by the serving GW, the delete bearer request message carrying the
cause IE to the MME."
Dependent Claim 4
Dependent claim 4 is not anticipated by Zhu at least because it depends from claim 1.
Furthermore, Zhu fails to disclose "detaching, by the MME, the UE from the 3GPP network
without sending a detach request message to the UE."
Dependent Claim 5
Dependent claim 5 is not anticipated by Zhu at least because it depends from claim 1.
Furthermore, Zhu fails to disclose "detaching, by the MME, the UE from the 3GPP network if
a terminal capability of the UE is single radio capability."
Dependent Claim 6
Dependent claim 6 is not anticipated by Zhu at least because it depends from claim 1.
Furthermore, Zhu fails to disclose "detaching, by the MME, the UE from the 3GPP network if
access policy information of an operator is single radio access."
Dependent Claim 7
Dependent claim 7 is not anticipated by Zhu at least because it depends from claim 1.
Furthermore, Zhu fails to disclose "detaching, by the MME, the UE from the 3GPP network if
a terminal capability of the UE is dual radio capability and access policy information of an
operator is single radio access; or if the terminal capability of the UE is single radio capability
and the access policy information of the operator is dual radio access; or if the terminal
capability of the UE is the single radio capability and the access policy information of the
operator is the single radio access."
Independent Claim 8
U.S. Patent Publication No. 2010/0135245 by Zhu (hereinafter "Zhu") describes a
method for avoiding resource being released mistakenly during tracking area update or
handover process (see Zhu, at Abstract).
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Further, Zhu discloses at step 302, if the target MME determines to select a new
Serving GW, sending notification message to the original MME by the target MME to indicate
that the target MME has selected a new Serving GW; at step 303, after the original MME
determines that Serving GW has changed, sending a request for deleting bearer context to the
old Serving GW by the original MME (see Zhu,. at paragraphs [0041]40043], [0058]-[0061],
[0078]-[0082], [0095]40098], Fig. 3, Fig. 4, Fig. 5, and Fig. 6).
Independent claim 8 is not anticipated by Zhu at least because Zhu fails to disclose that a
network device is configured to receive a delete bearer request sent by a serving gateway (GW)
of a 3GPP network when a handover from the 3GPP network to a non-3GPP network occurs,
wherein the delete bearer request carries a cause information element (IE) which indicates a user
equipment handovers from the 3GPP network to the non-3GPP network; and detach the UE from
the 3GPP network when all the bearer resources of the UE are deleted.
It is obvious to one of ordinary skill in the art that Zhu discloses that the target MME
sends a notification message to the original MME when the target MME determines to select a
new Serving GW. The original MME determines that Serving GW has changed after receiving
the notification message, and sends a request for deleting bearer context to the old Serving GW.
But Zhu fails to disclose that the network device is configured to receive a delete bearer request
sent by a serving gateway (GW) of a 3GPP network when a handover from the 3GPP network
to a non-3GPP network occurs, wherein the delete bearer request carries a cause information
element (IE) which indicates a user equipment handovers from the 3GPP network to the non-
3GPP network. In addition, Zhu also fails to disclose that the network device is configured to
detach the UE from the 3GPP network when all the bearer resources of the UE are deleted.
Dependent Claim 9
Zhu discloses that at step 302, if the target MME determines to select a new Serving
GW, sending notification message to the original MME by the target MME to indicate that the
target MME has selected a new Serving GW (see Zhu, at paragraphs [0041]-[0043]).
Dependent claim 9 is not anticipated by Zhu at least because it depends from claim 8.
Furthermore, Zhu fails to disclose that the cause IE is set to "UE's accessing RAT changed
from a 3GPP network to a non-3GPP network."
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Dependent Claim 10
Zhu discloses that at step 302, if the target MME determines to select a new Serving
GW, sending notification message to the original MME by the target MME to indicate that the
target MME has selected a new Serving GW (see Zhu, at paragraphs [0041]-[0043]).
Dependent claim 10 is not anticipated by Zhu at least because it depends from claim 9.
Furthermore, Zhu fails to disclose that the delete bearer request is sent from a packet data
network gateway to the network device via the serving gateway, wherein the cause IE is set to
"UE's accessing RAT changed from a 3GPP network to a non-3GPP network" by the packet
data network gateway."
Dependent Claim 11
Dependent claim 11 is not anticipated by Zhu at least because it depends from claim 8.
Furthermore, Zhu fails to disclose the network device is configured to detach the UE from the
3GPP network without sending a detach request message to the UE.
Dependent Claim 12
Dependent claim 12 is not anticipated by Zhu at least because it depends from claim 8.
Furthermore, Zhu fails to disclose the network device is configured to detach the UE from the
3GPP network if a terminal capability of the UE is single radio capability.
Dependent Claim 13
Dependent claim 13 is not anticipated by Zhu at least because it depends from claim 8.
Furthermore, Zhu fails to disclose the network device is configured to detach the UE from the
3GPP network if access policy information of an operator is single radio access.
Dependent Claim 14
Dependent claim 14 is not anticipated by Zhu at least because it depends from claim 8.
Furthermore, Zhu fails to disclose the network device is configured to detach the UE from the
3GPP network if a terminal capability of the UE is dual radio capability and access policy
information of an operator is single radio access; or if the terminal capability of the UE is
single radio capability and the access policy information of the operator is dual radio access; or
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if the terminal capability of the UE is the single radio capability and the access policy
information of the operator is the single radio access.
5. 3GPP TS 23.401 V1.1.0 (3GPP TS)
Independent Claim 1
3GPP TS 23.401 V1.1.0 (hereinafter "3GPP TS") describes a detach procedure for
detaching the UE when the UE accesses the EPS through E-UTRAN. Three detach procedures
are provided in 3GPP TS: UE-Initiated Detach Procedure, MME-initiated Detach Procedure, and
HSS-Initiated Detach Procedure (see 3GPP TS, Section 5.3.8.1, 5.3.8.2, 5.3.8.3, 5.3.8.4, 5.3.9,
Figure 5.3.8.2, Figure 5.3.8.3-1 and Figure 5.3.8.4-1).
Further, Section 5.3.8.2 of 3GPP TS discloses UE-Initiated Detach Procedure, wherein
the UE sends NAS message Detach Request to the MME, the MME sends Delete Bearer Request
to the Serving GW and a Detach Accept to the UE, and release the S 1 -MME signalling
connection for the UE by sending S1 Release Command to the eNodeB with Cause =Detach.
Section 5.3.8.3 of 3GPP TS discloses MME-initiated Detach Procedure, wherein the
MME initiated detach procedure, the MME may not send the detach request message to the UE
in case of implicit detach, and the MME may explicitly detach the UE by sending a Detach
Request message to the UE. And the MME sends the Delete Bearer Request Message to the
Serving GW.
Section 5.3.8.4 of 3GPP TS discloses HSS-Initiated Detach Procedure, wherein the HSS
initiates a detach procedure to update the subscriber's MM context at the MME and to delete
the EPS bearer because that the UE'S accessing RAT is changed from 3GPP to Non-3GPP.The
MME informs the UE, and sends a Delete Bearer Request message to the Serving GW.
Independent claim 1 is not anticipated by 3GPP TS at least because 3GPP TS fails to
disclose steps of: receiving, by a mobility management entity (MME) of the 3GPP network, a
delete bearer request sent by a serving gateway (GW) of the 3GPP network which carries a
cause information element (IE); wherein the cause IE indicates the UE handovers from the
3GPP network to the non-3GPP network; deleting, by the MME, bearer resources of the UE;
detaching, by the MME, the UE from the 3GPP network when all the bearer resources of the
UE are deleted.
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Obviously, 3GPP TS only disclose a detach procedure, In the UE-Initiated Detach
Procedure, it is the UE that decides to detach from the network, so the UE send a detach request
to the MME, so the MME does not need to make a decision whether to detach the UE, and just
need to send the Delete Bearer Request Message to the Serving GW to delete the Bear. In the
MME-initiated Detach Procedure, the MME initiated detach procedure, the MME decide to
detach a UE, and then sends the Delete Bearer Request Message to the Serving GW to delete
the bear. In the HSS-initiated Detach Procedure, HSS makes the decision to detach the UE, and
told the MME to detach the UE. But 3GPP TS fails to disclose that MME receives a delete
bearer request sent by a serving gateway (GW) of the 3GPP network which carries a cause
information element (IE), wherein the cause IE indicates the UE handovers from the 3GPP
network to the non-3GPP network, and deletes bearer resources of the UE. 3GPP TS also fail to
disclose that the MME delete the bear resources of the UE first, and then decide to detach the
UE from the 3GPP network when all the bear resources of the UE have been deleted.
Dependent Claim 2
3GPP TS discloses that at step 2 of Section 5.3.8.2, at step 2 of Section 5.3.8.3 and at
step 3 of Section 5.3.8.4, the active EPS bearers in the Serving GW regarding this particular UE
are deactivated by the MME sending Delete Bearer Request to the Serving GW.
Dependent claim 2 is not anticipated by 3GPP TS at least because it depends from
claiml. Furthermore, 3GPP TS fails to discloses that the cause IE is set to "UE's accessing
RAT changed from a 3GPP network to a non-3GPP network."
Dependent Claim 3
3GPP TS disclosed that at step 2 of Section 5.3.8.2, at step 2 of Section 5.3.8.3 and at
step 3 of Section 5.3.8.4, the active EPS bearers in the Serving GW regarding this particular UE
are deactivated by the MME sending Delete Bearer Request to the Serving GW.
Dependent claim 3 is not anticipated by 3GPP TS at least because it depends from claim
2. Furthermore, 3GPP TS fails to disclose "setting, by a packet data network gateway (PDN
GW), the cause IE to "UE's accessing RAT changed from a 3GPP network to a non-3GPP
network"; sending, by the PDN GW, the delete bearer request message carrying the cause IE to
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the serving GW; and sending, by the serving GW, the delete bearer request message carrying
the cause IE to the MME."
Dependent Claim 4
Dependent claim 4 is not anticipated by 3GPP TS at least because it depends from claim
1. Furthermore, 3GPP TS fails to disclose "detaching, by the MME, the UE from the 3GPP
network without sending a detach request message to the UE."
Dependent Claim 5
Dependent claim 5 is not anticipated by 3GPP TS at least because it depends from claim
1. Furthermore, 3GPP TS fail to disclose "detaching, by the MME, the UE from the 3GPP
network if a terminal capability of the UE is single radio capability."
Dependent Claim 6
Dependent claim 6 is not anticipated by 3GPP TS at least because it depends from claim
1. Furthermore, 3GPP TS fail to disclose "detaching, by the MME, the UE from the 3GPP
network if access policy information of an operator is single radio access."
Dependent Claim 7
Dependent claim 7 is not anticipated by 3GPP TS at least because it depends from claim
1. Furthermore, 3GPP TS fail to disclose "detaching, by the MME, the UE from the 3GPP
network if a terminal capability of the UE is dual radio capability and access policy information
of an operator is single radio access; or if the terminal capability of the UE is single radio
capability and the access policy information of the operator is dual radio access; or if the
terminal capability of the UE is the single radio capability and the access policy information of
the operator is the single radio access."
Independent Claim 8
3GPP TS 23.401 V1.1.0 (hereinafter "3GPP TS") describes a detach procedure for
detaching the UE when the UE accesses the EPS through E-UTRAN. Three detach procedures
are provided in 3GPP TS: UE-Initiated Detach Procedure, MME-initiated Detach Procedure, and
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HSS-Initiated Detach Procedure (see 3GPP TS, at Section 5.3.8.1, 5.3.8.2, 5.3.8.3, 5.3.8.4, 5.3.9,
Figure 5.3.8.2, Figure 5.3.8.3-1 and Figure 5.3.8.4-1).
Further, Section 5.3.8.2 of 3GPP TS discloses UE-Initiated Detach Procedure, wherein
the UE sends NAS message Detach Request to the MME, the MME sends Delete Bearer Request
to the Serving GW and a Detach Accept to the UE, and release the S 1-MME signalling
connection for the UE by sending S1 Release Command to the eNodeB with Cause =Detach.
Section 5.3.8.3 of 3GPP TS discloses MME-initiated Detach Procedure, wherein the
MME initiated detach procedure, the MME may not send the detach request message to the UE
in case of implicit detach, and the MME may explicitly detach the UE by sending a Detach
Request message to the UE. And the MME sends the Delete Bearer Request Message to the
Serving GW.
Section 5.3.8.4 of 3GPP TS discloses HSS-Initiated Detach Procedure, wherein the HSS
initiates a detach procedure to update the subscriber's MM context at the MME and to delete
the EPS bearer because that the UE'S accessing RAT is changed from 3GPP to Non-3GPP.The
MME informs the UE, and sends a Delete Bearer Request message to the Serving GW.
Independent claim 8 is not anticipated by 3GPP TS at least because 3GPP TS fail to
disclose that a network device is configured to receive a delete bearer request sent by a serving
gateway (GW) of a 3GPP network when a handover from the 3GPP network to a non-3GPP
network occurs, wherein the delete bearer request carries a cause information element (IE)
which indicates a user equipment handovers from the 3GPP network to the non-3GPP network;
delete bearer resources of the user equipment; and detach the UE from the 3GPP network when
all the bearer resources of the UE are deleted.
Obviously, 3GPP TS only disclose a detach procedure, In the UE-Initiated Detach
Procedure, it is the UE that decides to detach from the network, so the UE send a detach request
to the MME, so the MME does not need to make a decision whether to detach the UE, and just
need to send the Delete Bearer Request Message to the Serving GW to delete the Bear. In the
MME-initiated Detach Procedure, the MME initiated detach procedure, the MME decide to
detach a UE, and then sends the Delete Bearer Request Message to the Serving GW to delete the
bear. In the HSS-initiated Detach Procedure, HSS makes the decision to detach the UE, and told
the MME to detach the UE. But 3GPP TS fails to disclose that a network device is configured to
receive a delete bearer request sent by a serving gateway (GW) of a 3GPP network when a
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handover from the 3GPP network to a non-3GPP network occurs, wherein the delete bearer
request carries a cause information element (IE) which indicates a user equipment handovers
from the 3GPP network to the non-3GPP network; delete bearer resources of the user equipment.
3GPP TS also fail to disclose that a network device is configured to detach the UE from the
3GPP network when all the bearer resources of the UE are deleted.
Dependent Claim 9
3GPP TS discloses that that at step 2 of Section 5.3.8.2, at step 2 of Section 5.3.8.3 and
at step 3 of Section 5.3.8.4, the active EPS bearers in the Serving GW regarding this particular
UE are deactivated by the MME sending Delete Bearer Request to the Serving GW.
Dependent claim 9 is not anticipated by 3GPP TS at least because it depends from claim
8. Furthermore, 3GPP TS fail to disclose that the cause IE is set to "UE's accessing RAT
changed from a 3GPP network to a non-3GPP network."
Dependent Claim 10
3GPP TS disclosed that at step 2 of Section 5.3.8.2, at step 2 of Section 5.3.8.3 and at
step 3 of Section 5.3.8.4, the active EPS bearers in the Serving GW regarding this particular UE
are deactivated by the MME sending Delete Bearer Request to the Serving GW.
Dependent claim 10 is not anticipated by 3GPP TS at least because it depends from
claim 9. Furthermore, 3GPP TS fail to disclose that the delete bearer request is sent from a
packet data network gateway to the network device via the serving gateway, wherein the cause
IE is set to "UE's accessing RAT changed from a 3GPP network to a non-3GPP network" by
the packet data network gateway."
Dependent Claim 11
Dependent claim 11 is not anticipated by 3GPP TS at least because it depends from
claim 8. Furthermore, 3GPP TS fail to disclose the network device is configured to detach the
UE from the 3GPP network without sending a detach request message to the UE.
Dependent Claim 12
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Dependent claim 12 is not anticipated by 3GPP TS at least because it depends from
claim 8. Furthermore, 3GPP TS fail to disclose the network device is configured to detach the
UE from the 3GPP network if a terminal capability of the UE is single radio capability.
Dependent Claim 13
Dependent claim 13 is not anticipated by 3GPP TS at least because it depends from
claim 8. Furthermore, 3GPP TS fail to disclose the network device is configured to detach the
UE from the 3GPP network if access policy information of an operator is single radio access.
Dependent Claim 14
Dependent claim 14 is not anticipated by 3GPP TS at least because it depends from
claim 8. Furthermore, 3GPP TS fail to disclose the network device is configured to detach the
UE from the 3GPP network if a terminal capability of the UE is dual radio capability and
access policy information of an operator is single radio access; or if the terminal capability of
the UE is single radio capability and the access policy information of the operator is dual radio
access; or if the terminal capability of the UE is the single radio capability and the access
policy information of the operator is the single radio access.
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C. Detailed Explanation of Patentability
1. 35 U.S.C. §102
Applicant respectfully submits that for at least the reasons set forth above, none of Cheon,
Nishi, Bae, Zhu and 3GPP TS 23.401 anticipates any of now pending claims 1-14 of the
present patent application under 35 U.S.C. § 102 (a)-(g) at least because none of these
references discloses each and every limitation of any of now pending claims 1-14.
2. 35 U.S.C. §103(a)
Applicant respectfully submits that none of Cheon, Nishi, Bae, Zhu and 3GPP TS 23.401
either standing alone or in combination, renders claims 1-14 of the present patent application
obvious under 35 U.S.C. §103(a) at least because none of these references discloses or suggests
a method, a corresponding apparatus and a corresponding computer readable medium for
implementing the method. The method includes: receiving, by a mobility management entity
(MME) of the 3GPP network, a delete bearer request sent by a serving gateway (GW) of the
3GPP network which carries a cause information element (IE), wherein the cause IE indicates
the UE handovers from the 3GPP network to the non-3GPP network; deleting, by the MME,
bearer resources of the UE; detaching, by the MME, the UE from the 3GPP network when all
the bearer resources of the UE are deleted. Moreover, no suggestion or impetus in the art to
modify any of the identified references to include the features of the invention that the
references are lacking.
3. 35 U.S.C. § 103(c)
Applicant respectfully submits that none of Cheon, Nishi, Bae, Zhu and 3GPP TS 23.401
can be disqualified under 35 U.S.0 § 103(c).
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D. Statement of Utility
The present invention, as set forth in independent claim 1 and claim 8 may be used to
receive, by a mobility management entity (MME) of a 3GPP (3rd generation partnership
project) network, a delete bearer request sent by a serving gateway (GW) of the 3GPP network
which carries a cause information element (IE), wherein the cause IE indicates the user
equipment (UE) handovers from the 3GPP network to the non-3GPP network; delete, by the
MME, bearer resources of the UE; and detach, by the MME, the UE from the 3GPP network
when all the bearer resources of the UE are deleted.
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E. Showing of Support of Each Claim Limitation
The following table provides references to the disclosure for each limitation of Claims 1-
14. Although this table refers to selected sections of the disclosure for each limitation,
additional sections may also provide further support for the claim limitations.
Table 1. Support from present application
CLAIM LIMITITION SUPPORT
1. A method for detaching a user At least paragraphs [0154], [0158], [0159]
equipment (UE) when a handover from a 3rd and Fig.6.
generation partnership project (3GPP) network In step 608a, the PDN GW sends a delete
to a non-3GPP network occurs, comprising: bearer request message to the serving GW, and
receiving, by a mobility management then the serving GW sends the received delete
entity (MME) of the 3GPP network, a delete bearer request message to the MME, and adds
bearer request sent by a serving gateway (GW) a cause IE in the delete bearer request message
of the 3GPP network which carries a cause to indicate the reason of the deletion, and the
information element (IE), wherein the cause IE MME deletes the bearer resources.
indicates the UE handovers from the 3GPP Step 608a or step 608b further includes
network to the non-3GPP network; the following: the MME deletes the bearer
deleting, by the MME, bearer resources of resources after receiving the delete bearer
the UE; request message. If the MME finds that all
detaching, by the MME, the UE from bearer resources of the UE are deleted, the
the 3GPP network when all the bearer MME further determines whether to delete an
resources of the UE are deleted. MM context (i.e., detaching the UE from the
3GPP network) and whether to send a detach
request message to the UE. Specifically, the
process includes the following circumstances.
1) The MME makes the following
determination according to the cause IE carried
in the delete bearer request. The MME
determines whether the cause IE carried in the
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received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network"; if yes, the MME deletes the MM
context of the UE, and does not send the detach
request message to the UE; otherwise, the
MME sends the detach request message to the
UE and notifies the UE to delete the MM
context and the bearer resources of the 3GPP
network in the UE.
2. The method according to claim 1,
wherein the cause IE is set to "UE's accessing
At least paragraph [0155].
In this step, as for the bearer deletion
RAT changed from a 3GPP network to a non- caused by the handover or switching of the
3GPP network". UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
3. The method according to claim 2,
further comprising:
At least paragraphs [0154] and [0155].
In step 608a, the PDN GW sends a delete
setting, by a packet data network gateway bearer request message to the serving GW, and
(PDN GW), the cause IE to "UE' s accessing then the serving GW sends the received delete
RAT changed from a 3GPP network to a non- bearer request message to the MME, and adds
3GPP network"; a cause IE in the delete bearer request message
sending, by the PDN GW, the delete to indicate the reason of the deletion, and the
bearer request message carrying the cause IE to MME deletes the bearer resources.
the serving GW; and In this step, as for the bearer deletion
sending, by the serving GW, the delete caused by the handover or switching of the
bearer request message carrying the cause IE UE from the 3GPP network to the non-3GPP
to the MME. network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
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network to a non-3GPP network".
4. The method according to claim 1,
wherein detaching, by the MME, the UE from
the 3GPP network further comprises:
detaching, by the MME, the UE from
the 3GPP network without sending a detach
request message to the UE.
At least paragraph [0159].
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
MME determines whether the cause IE
carried in the received delete bearer request
message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE.
5. The method according to claim 1,
comprising:
detaching, by the MME, the UE from the
3GPP network if a terminal capability of the
UE is single radio capability.
At least paragraph [0160].
2) The MME makes the following
determination according to the IE carried in
the delete bearer request and the terminal
capability of the UE. If the MME determines
that the IE carried in the received delete
bearer request message is represented as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", and the
MME knows that the terminal capability of
the UE is "single radio capability", the MME
deletes the MM context of the UE.
6. The method according to claim 1,
comprising:
detaching, by the MME, the UE from the
3GPP network if access policy information of
an operator is single radio access.
At least paragraph [0161].
3) The MME makes the following
determination according to the IE carried in
the delete bearer request and the access
policy information of the operator. If the
MME determines that the IE carried in the
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received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", and the MME knows that the
access policy information of the operator is
"single radio access", the MME deletes the
MM context of the UE.
7. The method according to claim 1,
comprising:
At least paragraph [0162].
4) The MME makes the following
detaching, by the MME, the UE from the determination according to the IE carried in
3GPP network if a terminal capability of the the delete bearer request, the terminal
UE is dual radio capability and access policy capability of the UE, and the access policy
information of an operator is single radio information of the operator. If the MME
access; or if the terminal capability of the UE determines that the IE carried in the received
is single radio capability and the access policy delete bearer request message is represented
information of the operator is dual radio as "UE's accessing RAT changed from a
access; or if the terminal capability of the UE 3GPP network to a non-3GPP network", the
is the single radio capability and the access terminal capability of the UE is "dual radio
policy information of the operator is the single capability", and the access policy information
radio access. of the operator is "single radio access", or if
the MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", the access policy information of
the operator is "multi radio access", and the
terminal capability of the UE is "single radio
capability", or if the MME determines that
the IE carried in the received delete bearer
request message is represented as "UE's
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accessing RAT changed from a 3GPP
network to a non-3GPP network", the
terminal capability of the UE is "single radio
capability", and the access policy information
of the operator is "single radio access", the
MME deletes the MM context of the UE.
8.A network device, configured to: At least paragraphs [0154], [0158], [0159]
receive a delete bearer request sent by a and Fig.6.
serving gateway (GW) of a 3GPP network In step 608a, the PDN GW sends a delete
when a handover from the 3GPP network to a bearer request message to the serving GW, and
non-3GPP network occurs, wherein the delete then the serving GW sends the received delete
bearer request carries a cause information bearer request message to the MME, and adds
element (IE) which indicates a user equipment a cause IE in the delete bearer request message
handovers from the 3GPP network to the non- to indicate the reason of the deletion, and the
3GPP network; MME deletes the bearer resources.
delete bearer resources of the user Step 608a or step 608b further includes
equipment; and the following: the MME deletes the bearer
detach the UE from the 3GPP network resources after receiving the delete bearer
when all the bearer resources of the UE are request message. If the MME finds that all
deleted. bearer resources of the UE are deleted, the
MME further determines whether to delete an
MM context (i.e., detaching the UE from the
3GPP network) and whether to send a detach
request message to the UE. Specifically, the
process includes the following circumstances.
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
MME determines whether the cause IE
carried in the received delete bearer request
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message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE; otherwise,
the MME sends the detach request message
to the UE and notifies the UE to delete the
MM context and the bearer resources of the
3GPP network in the UE.
9. The network device according to claim At least paragraph [0155].
8, wherein the cause IE is set to "UE's In this step, as for the bearer deletion
accessing RAT changed from a 3GPP network caused by the handover or switching of the
to a non-3GPP network". UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
10. The network device according to At least paragraphs [0154] and [0155].
claim 9, wherein the delete bearer request is In step 608a, the PDN GW sends a delete
sent from a packet data network gateway to the bearer request message to the serving GW, and
network device via the serving gateway,
wherein the cause IE is set to "UE's accessing
then the serving GW sends the received delete
bearer request message to the MME, and adds
RAT changed from a 3GPP network to a non- a cause IE in the delete bearer request message
3GPP network" by the packet data network to indicate the reason of the deletion, and the
gateway. MME deletes the bearer resources.
In this step, as for the bearer deletion
caused by the handover or switching of the
UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
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11. The network device according to
claim 8, wherein the network device is
configured to detach the UE from the 3GPP
network without sending a detach request
message to the UE.
At least paragraph [0159].
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
MME determines whether the cause IE
carried in the received delete bearer request
message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE.
12. The network device according to At least paragraph [0160].
claim 8, wherein the network device is 2) The MME makes the following
configured to detach the UE from the 3GPP determination according to the IE carried in
network if a terminal capability of the UE is the delete bearer request and the terminal
single radio capability. capability of the UE. If the MME determines
that the IE carried in the received delete
bearer request message is represented as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", and the
MME knows that the terminal capability of
the UE is "single radio capability", the MME
deletes the MM context of the UE.
13. The network device according to At least paragraph [0161].
claim 8, wherein the network device is 3) The MME makes the following
configured to detach the UE from the 3GPP determination according to the IE carried in
network if access policy information of an the delete bearer request and the access
operator is single radio access. policy information of the operator. If the
MME determines that the IE carried in the
received delete bearer request message is
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represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", and the MME knows that the
access policy information of the operator is
"single radio access", the MME deletes the
MM context of the UE.
14. The network device according to At least paragraph [0162].
claim 8, wherein the network device is 4) The MME makes the following
configured to detach the UE from the 3GPP determination according to the IE carried in
network if a terminal capability of the UE is the delete bearer request, the terminal
dual radio capability and access policy capability of the UE, and the access policy
information of an operator is single radio information of the operator. If the MME
access; or if the terminal capability of the UE determines that the IE carried in the received
is single radio capability and the access policy delete bearer request message is represented
information of the operator is dual radio as "UE's accessing RAT changed from a
access; or if the terminal capability of the UE 3GPP network to a non-3GPP network", the
is the single radio capability and the access terminal capability of the UE is "dual radio
policy information of the operator is the single capability", and the access policy information
radio access. of the operator is "single radio access", or if
the MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", the access policy information of
the operator is "multi radio access", and the
terminal capability of the UE is "single radio
capability", or if the MME determines that
the IE carried in the received delete bearer
request message is represented as "UE's
accessing RAT changed from a 3GPP
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network to a non-3GPP network", the
terminal capability of the UE is "single radio
capability", and the access policy information
of the operator is "single radio access", the
MME deletes the MM context of the UE.
Table 2. Support from parent application Serial No. 12/479,216
CLAIM LIMITITION SUPPORT
1. A method for detaching a user At least paragraphs [0154], [0158], [0159]
equipment (UE) when a handover from a 3rd and Fig.6.
generation partnership project (3GPP) network In step 608a, the PDN GW sends a delete
to a non-3GPP network occurs, comprising: bearer request message to the serving GW, and
receiving, by a mobility management then the serving GW sends the received delete
entity (MME) of the 3GPP network, a delete bearer request message to the MME, and adds
bearer request sent by a serving gateway (GW) a cause IE in the delete bearer request message
of the 3GPP network which carries a cause to indicate the reason of the deletion, and the
information element (IE), wherein the cause IE MME deletes the bearer resources.
indicates the UE handovers from the 3GPP Step 608a or step 608b further includes
network to the non-3GPP network; the following: the MME deletes the bearer
deleting, by the MME, bearer resources of resources after receiving the delete bearer
the UE; request message. If the MME finds that all
detaching, by the MME, the UE from bearer resources of the UE are deleted, the
the 3GPP network when all the bearer MME further determines whether to delete an
resources of the UE are deleted. MM context (i.e., detaching the UE from the
3GPP network) and whether to send a detach
request message to the UE. Specifically, the
process includes the following circumstances.
1) The MME makes the following
determination according to the cause IE carried
in the delete bearer request. The MME
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determines whether the cause IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network"; if yes, the MME deletes the MM
context of the UE, and does not send the detach
request message to the UE; otherwise, the
MME sends the detach request message to the
UE and notifies the UE to delete the MM
context and the bearer resources of the 3GPP
network in the UE.
2. The method according to claim 1,
wherein the cause IE is set to "UE's accessing
At least paragraph [0155].
In this step, as for the bearer deletion
RAT changed from a 3GPP network to a non- caused by the handover or switching of the
3GPP network". UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
3. The method according to claim 2,
further comprising:
At least paragraphs [0154] and [0155].
In step 608a, the PDN GW sends a delete
setting, by a packet data network gateway bearer request message to the serving GW, and
(PDN GW), the cause IE to "UE' s accessing then the serving GW sends the received delete
RAT changed from a 3GPP network to a non- bearer request message to the MME, and adds
3GPP network"; a cause IE in the delete bearer request message
sending, by the PDN GW, the delete to indicate the reason of the deletion, and the
bearer request message carrying the cause IE to MME deletes the bearer resources.
the serving GW; and In this step, as for the bearer deletion
sending, by the serving GW, the delete caused by the handover or switching of the
bearer request message carrying the cause IE UE from the 3GPP network to the non-3GPP
to the MME. network, the PDN GW sets the cause IE as
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"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
4. The method according to claim 1,
wherein detaching, by the MME, the UE from
the 3GPP network further comprises:
detaching, by the MME, the UE from
the 3GPP network without sending a detach
request message to the UE.
At least paragraph [0159].
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
MME determines whether the cause IE
carried in the received delete bearer request
message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE.
5. The method according to claim 1,
comprising:
detaching, by the MME, the UE from the
3GPP network if a terminal capability of the
UE is single radio capability.
At least paragraph [0160].
2) The MME makes the following
determination according to the IE carried in
the delete bearer request and the terminal
capability of the UE. If the MME determines
that the IE carried in the received delete
bearer request message is represented as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", and the
MME knows that the terminal capability of
the UE is "single radio capability", the MME
deletes the MM context of the UE.
6. The method according to claim 1,
comprising:
detaching, by the MME, the UE from the
3GPP network if access policy information of
an operator is single radio access.
At least paragraph [0161].
3) The MME makes the following
determination according to the IE carried in
the delete bearer request and the access
policy information of the operator. If the
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MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", and the MME knows that the
access policy information of the operator is
"single radio access", the MME deletes the
MM context of the UE.
7. The method according to claim 1,
comprising:
At least paragraph [0162].
4) The MME makes the following
detaching, by the MME, the UE from the determination according to the IE carried in
3GPP network if a terminal capability of the the delete bearer request, the terminal
UE is dual radio capability and access policy capability of the UE, and the access policy
information of an operator is single radio information of the operator. If the MME
access; or if the terminal capability of the UE determines that the IE carried in the received
is single radio capability and the access policy delete bearer request message is represented
information of the operator is dual radio as "UE's accessing RAT changed from a
access; or if the terminal capability of the UE 3GPP network to a non-3GPP network", the
is the single radio capability and the access terminal capability of the UE is "dual radio
policy information of the operator is the single capability", and the access policy information
radio access. of the operator is "single radio access", or if
the MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", the access policy information of
the operator is "multi radio access", and the
terminal capability of the UE is "single radio
capability", or if the MME determines that
the IE carried in the received delete bearer
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request message is represented as "UE's
accessing RAT changed from a 3GPP
network to a non-3GPP network", the
terminal capability of the UE is "single radio
capability", and the access policy information
of the operator is "single radio access", the
MME deletes the MM context of the UE.
8.A network device, configured to: At least paragraphs [0154], [0158], [0159]
receive a delete bearer request sent by a and Fig.6.
serving gateway (GW) of a 3GPP network In step 608a, the PDN GW sends a delete
when a handover from the 3GPP network to a bearer request message to the serving GW, and
non-3GPP network occurs, wherein the delete then the serving GW sends the received delete
bearer request carries a cause information bearer request message to the MME, and adds
element (IE) which indicates a user equipment a cause IE in the delete bearer request message
handovers from the 3GPP network to the non- to indicate the reason of the deletion, and the
3GPP network; MME deletes the bearer resources.
delete bearer resources of the user Step 608a or step 608b further includes
equipment; and the following: the MME deletes the bearer
detach the UE from the 3GPP network resources after receiving the delete bearer
when all the bearer resources of the UE are request message. If the MME finds that all
deleted. bearer resources of the UE are deleted, the
MME further determines whether to delete an
MM context (i.e., detaching the UE from the
3GPP network) and whether to send a detach
request message to the UE. Specifically, the
process includes the following circumstances.
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
MME determines whether the cause IE
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carried in the received delete bearer request
message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE; otherwise,
the MME sends the detach request message
to the UE and notifies the UE to delete the
MM context and the bearer resources of the
3GPP network in the UE.
9. The network device according to claim At least paragraph [0155].
8, wherein the cause IE is set to "UE's In this step, as for the bearer deletion
accessing RAT changed from a 3GPP network caused by the handover or switching of the
to a non-3GPP network". UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
10. The network device according to At least paragraphs [0154] and [0155].
claim 9, wherein the delete bearer request is In step 608a, the PDN GW sends a delete
sent from a packet data network gateway to the bearer request message to the serving GW, and
network device via the serving gateway,
wherein the cause IE is set to "UE's accessing
then the serving GW sends the received delete
bearer request message to the MME, and adds
RAT changed from a 3GPP network to a non- a cause IE in the delete bearer request message
3GPP network" by the packet data network to indicate the reason of the deletion, and the
gateway. MME deletes the bearer resources.
In this step, as for the bearer deletion
caused by the handover or switching of the
UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
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network to a non-3GPP network".
11. The network device according to
claim 8, wherein the network device is
configured to detach the UE from the 3GPP
network without sending a detach request
message to the UE.
At least paragraph [0159].
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
MME determines whether the cause IE
carried in the received delete bearer request
message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE.
12. The network device according to
claim 8, wherein the network device is
configured to detach the UE from the 3GPP
network if a terminal capability of the UE is
single radio capability.
At least paragraph [0160].
2) The MME makes the following
determination according to the IE carried in
the delete bearer request and the terminal
capability of the UE. If the MME determines
that the IE carried in the received delete
bearer request message is represented as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", and the
MME knows that the terminal capability of
the UE is "single radio capability", the MME
deletes the MM context of the UE.
13. The network device according to
claim 8, wherein the network device is
configured to detach the UE from the 3GPP
network if access policy information of an
operator is single radio access.
At least paragraph [0161].
3) The MME makes the following
determination according to the IE carried in
the delete bearer request and the access
policy information of the operator. If the
MME determines that the IE carried in the
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received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", and the MME knows that the
access policy information of the operator is
"single radio access", the MME deletes the
MM context of the UE.
14. The network device according to At least paragraph [0162].
claim 8, wherein the network device is 4) The MME makes the following
configured to detach the UE from the 3GPP determination according to the IE carried in
network if a terminal capability of the UE is the delete bearer request, the terminal
dual radio capability and access policy capability of the UE, and the access policy
information of an operator is single radio information of the operator. If the MME
access; or if the terminal capability of the UE determines that the IE carried in the received
is single radio capability and the access policy delete bearer request message is represented
information of the operator is dual radio as "UE's accessing RAT changed from a
access; or if the terminal capability of the UE 3GPP network to a non-3GPP network", the
is the single radio capability and the access terminal capability of the UE is "dual radio
policy information of the operator is the single capability", and the access policy information
radio access. of the operator is "single radio access", or if
the MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", the access policy information of
the operator is "multi radio access", and the
terminal capability of the UE is "single radio
capability", or if the MME determines that
the IE carried in the received delete bearer
request message is represented as "UE's
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accessing RAT changed from a 3GPP
network to a non-3GPP network", the
terminal capability of the UE is "single radio
capability", and the access policy information
of the operator is "single radio access", the
MME deletes the MM context of the UE.
Table 3. Support from Chinese Priority Document No.CN 200710137568.8
CLAIM LIMITITION SUPPORT
1. A method for detaching a user At least paragraphs [0154], [0158], [0159]
equipment (UE) when a handover from a 3rd and Fig.6.
generation partnership project (3GPP) network In step 608a, the PDN GW sends a delete
to a non-3GPP network occurs, comprising: bearer request message to the serving GW, and
receiving, by a mobility management then the serving GW sends the received delete
entity (MME) of the 3GPP network, a delete bearer request message to the MME, and adds
bearer request sent by a serving gateway (GW) a cause IE in the delete bearer request message
of the 3GPP network which carries a cause to indicate the reason of the deletion, and the
information element (IE), wherein the cause IE MME deletes the bearer resources.
indicates the UE handovers from the 3GPP Step 608a or step 608b further includes
network to the non-3GPP network; the following: the MME deletes the bearer
deleting, by the MME, bearer resources of resources after receiving the delete bearer
the UE; request message. If the MME finds that all
detaching, by the MME, the UE from bearer resources of the UE are deleted, the
the 3GPP network when all the bearer MME further determines whether to delete an
resources of the UE are deleted. MM context (i.e., detaching the UE from the
3GPP network) and whether to send a detach
request message to the UE. Specifically, the
process includes the following circumstances.
1) The MME makes the following
determination according to the cause IE carried
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in the delete bearer request. The MME
determines whether the cause IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network"; if yes, the MME deletes the MM
context of the UE, and does not send the detach
request message to the UE; otherwise, the
MME sends the detach request message to the
UE and notifies the UE to delete the MM
context and the bearer resources of the 3GPP
network in the UE.
2. The method according to claim 1,
wherein the cause IE is set to "UE's accessing
At least paragraph [0155].
In this step, as for the bearer deletion
RAT changed from a 3GPP network to a non- caused by the handover or switching of the
3GPP network". UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
3. The method according to claim 2,
further comprising:
At least paragraphs [0154] and [0155].
In step 608a, the PDN GW sends a delete
setting, by a packet data network gateway bearer request message to the serving GW, and
(PDN GW), the cause IE to "UE' s accessing then the serving GW sends the received delete
RAT changed from a 3GPP network to a non- bearer request message to the MME, and adds
3GPP network"; a cause IE in the delete bearer request message
sending, by the PDN GW, the delete to indicate the reason of the deletion, and the
bearer request message carrying the cause IE to MME deletes the bearer resources.
the serving GW; and In this step, as for the bearer deletion
sending, by the serving GW, the delete caused by the handover or switching of the
bearer request message carrying the cause IE UE from the 3GPP network to the non-3GPP
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to the MME. network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
4. The method according to claim 1,
wherein detaching, by the MME, the UE from
the 3GPP network further comprises:
detaching, by the MME, the UE from
the 3GPP network without sending a detach
request message to the UE.
At least paragraph [0159].
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
MME determines whether the cause IE
carried in the received delete bearer request
message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE.
5. The method according to claim 1,
comprising:
detaching, by the MME, the UE from the
3GPP network if a terminal capability of the
UE is single radio capability.
At least paragraph [0160].
2) The MME makes the following
determination according to the IE carried in
the delete bearer request and the terminal
capability of the UE. If the MME determines
that the IE carried in the received delete
bearer request message is represented as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", and the
MME knows that the terminal capability of
the UE is "single radio capability", the MME
deletes the MM context of the UE.
6. The method according to claim 1,
comprising:
detaching, by the MME, the UE from the
3GPP network if access policy information of
At least paragraph [0161].
3) The MME makes the following
determination according to the IE carried in
the delete bearer request and the access
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an operator is single radio access. policy information of the operator. If the
MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", and the MME knows that the
access policy information of the operator is
"single radio access", the MME deletes the
MM context of the UE.
7. The method according to claim 1,
comprising:
At least paragraph [0162].
4) The MME makes the following
detaching, by the MME, the UE from the determination according to the IE carried in
3GPP network if a terminal capability of the the delete bearer request, the terminal
UE is dual radio capability and access policy capability of the UE, and the access policy
information of an operator is single radio information of the operator. If the MME
access; or if the terminal capability of the UE determines that the IE carried in the received
is single radio capability and the access policy delete bearer request message is represented
information of the operator is dual radio as "UE's accessing RAT changed from a
access; or if the terminal capability of the UE 3GPP network to a non-3GPP network", the
is the single radio capability and the access terminal capability of the UE is "dual radio
policy information of the operator is the single capability", and the access policy information
radio access. of the operator is "single radio access", or if
the MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", the access policy information of
the operator is "multi radio access", and the
terminal capability of the UE is "single radio
capability", or if the MME determines that
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the IE carried in the received delete bearer
request message is represented as "UE's
accessing RAT changed from a 3GPP
network to a non-3GPP network", the
terminal capability of the UE is "single radio
capability", and the access policy information
of the operator is "single radio access", the
MME deletes the MM context of the UE.
8.A network device, configured to: At least paragraphs [0154], [0158], [0159]
receive a delete bearer request sent by a and Fig.6.
serving gateway (GW) of a 3GPP network In step 608a, the PDN GW sends a delete
when a handover from the 3GPP network to a bearer request message to the serving GW, and
non-3GPP network occurs, wherein the delete then the serving GW sends the received delete
bearer request carries a cause information bearer request message to the MME, and adds
element (IE) which indicates a user equipment a cause IE in the delete bearer request message
handovers from the 3GPP network to the non- to indicate the reason of the deletion, and the
3GPP network; MME deletes the bearer resources.
delete bearer resources of the user Step 608a or step 608b further includes
equipment; and the following: the MME deletes the bearer
detach the UE from the 3GPP network resources after receiving the delete bearer
when all the bearer resources of the UE are request message. If the MME finds that all
deleted. bearer resources of the UE are deleted, the
MME further determines whether to delete an
MM context (i.e., detaching the UE from the
3GPP network) and whether to send a detach
request message to the UE. Specifically, the
process includes the following circumstances.
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
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MME determines whether the cause IE
carried in the received delete bearer request
message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE; otherwise,
the MME sends the detach request message
to the UE and notifies the UE to delete the
MM context and the bearer resources of the
3GPP network in the UE.
9. The network device according to claim At least paragraph [0155].
8, wherein the cause IE is set to "UE's In this step, as for the bearer deletion
accessing RAT changed from a 3GPP network caused by the handover or switching of the
to a non-3GPP network". UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
10. The network device according to At least paragraphs [0154] and [0155].
claim 9, wherein the delete bearer request is In step 608a, the PDN GW sends a delete
sent from a packet data network gateway to the bearer request message to the serving GW, and
network device via the serving gateway,
wherein the cause IE is set to "UE's accessing
then the serving GW sends the received delete
bearer request message to the MME, and adds
RAT changed from a 3GPP network to a non- a cause IE in the delete bearer request message
3GPP network" by the packet data network to indicate the reason of the deletion, and the
gateway. MME deletes the bearer resources.
In this step, as for the bearer deletion
caused by the handover or switching of the
UE from the 3GPP network to the non-3GPP
network, the PDN GW sets the cause IE as
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"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network".
11. The network device according to
claim 8, wherein the network device is
configured to detach the UE from the 3GPP
network without sending a detach request
message to the UE.
At least paragraph [0159].
1) The MME makes the following
determination according to the cause IE
carried in the delete bearer request. The
MME determines whether the cause IE
carried in the received delete bearer request
message is represented as "UE's accessing
RAT changed from a 3GPP network to a non-
3GPP network"; if yes, the MME deletes the
MM context of the UE, and does not send the
detach request message to the UE.
12. The network device according to
claim 8, wherein the network device is
configured to detach the UE from the 3GPP
network if a terminal capability of the UE is
single radio capability.
At least paragraph [0160].
2) The MME makes the following
determination according to the IE carried in
the delete bearer request and the terminal
capability of the UE. If the MME determines
that the IE carried in the received delete
bearer request message is represented as
"UE's accessing RAT changed from a 3GPP
network to a non-3GPP network", and the
MME knows that the terminal capability of
the UE is "single radio capability", the MME
deletes the MM context of the UE.
13. The network device according to
claim 8, wherein the network device is
configured to detach the UE from the 3GPP
network if access policy information of an
operator is single radio access.
At least paragraph [0161].
3) The MME makes the following
determination according to the IE carried in
the delete bearer request and the access
policy information of the operator. If the
51
NSN677-1002, Page 328
Docket No. HW708564
Accelerated Examination Support Document
MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", and the MME knows that the
access policy information of the operator is
"single radio access", the MME deletes the
MM context of the UE.
14. The network device according to At least paragraph [0162].
claim 8, wherein the network device is 4) The MME makes the following
configured to detach the UE from the 3GPP determination according to the IE carried in
network if a terminal capability of the UE is the delete bearer request, the terminal
dual radio capability and access policy capability of the UE, and the access policy
information of an operator is single radio information of the operator. If the MME
access; or if the terminal capability of the UE determines that the IE carried in the received
is single radio capability and the access policy delete bearer request message is represented
information of the operator is dual radio as "UE's accessing RAT changed from a
access; or if the terminal capability of the UE 3GPP network to a non-3GPP network", the
is the single radio capability and the access terminal capability of the UE is "dual radio
policy information of the operator is the single capability", and the access policy information
radio access. of the operator is "single radio access", or if
the MME determines that the IE carried in the
received delete bearer request message is
represented as "UE's accessing RAT changed
from a 3GPP network to a non-3GPP
network", the access policy information of
the operator is "multi radio access", and the
terminal capability of the UE is "single radio
capability", or if the MME determines that
the IE carried in the received delete bearer
52
NSN677-1002, Page 329
Docket No. HW708564
Accelerated Examination Support Document
request message is represented as "UE's
accessing RAT changed from a 3GPP
network to a non-3GPP network", the
terminal capability of the UE is "single radio
capability", and the access policy information
of the operator is "single radio access", the
MME deletes the MM context of the UE.
F. References that may be Disqualified as Prior Art
None of the references cited herein can be disqualified as prior art under 35 U.S.C.
103(c) as amended by the Cooperative Research and Technology Enhancement (CREATE) Act.
Conclusion
In view of this Accelerated Support Document, Applicant respectfully requests that the
Examiner grant the Petition for Accelerated Examination in the above-captioned patent
application. Applicant respectfully submits that the claims of the above-captioned patent
application are in condition for allowance, and respectfully request that the Examiner allow the
claims of the above-captioned patent application to issue in a U.S. patent.
Respectfully submitted,
/John K. Winn/ John K. Winn, Registration No. 58,579 LEYDIG, VOLT & MAYER, LTD. Two Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
Date: June 27, 2011
53
NSN677-1002, Page 330
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
Patent Application No.
Confirmation No.
Applicant: WU et al.
Filed: June 27, 2011
TC/AU:
Examiner:
Docket No.: HW708564 (Client Reference No. 81356140US16)
Customer No.: 77399
Commissioner for Patents P.O. Box 1450 Alexandria, VA 22313-1450
INFORMATION DISCLOSURE STATEMENT
Pursuant to 37 CFR 1.97 and 1.98, the references listed on the enclosed Form PTO-1449 and/or Substitute Form PTO-1449 ("Form 1449") are submitted for consideration by the Examiner in the examination of the above-identified patent application.
The full consideration of the references in their entirety by the Examiner is respectfully requested and encouraged. Also, it is respectfully requested that the references be entered into the record of the present application and that the Examiner initial the appropriate area on the enclosed Form 1449, thereby indicating the Examiner's consideration of each of the references.
The submission of the references listed on the Form 1449 is for the purpose of providing a complete record and is not a concession that the references listed thereon are prior art to the invention claimed in the patent application. The right is expressly reserved to establish an invention date earlier than the above-identified filing date in order to remove any reference submitted herewith as prior art should it be deemed appropriate to do so.
Further, the submission of the references is not to be taken as a concession that any reference represents art that is relevant or analogous to the claimed invention. Accordingly, the right to argue that any reference is not properly within the scope of prior art relevant to an examination of the claims in the above-identified application is also expressly reserved.
The Information Disclosure Statement is being filed:
within any one of the following time periods: (a) within three months of the filing date of a national application other than a continued prosecution application under 37 CFR 1.53(d); (b) within three months of the date of entry of the national stage as set forth in 37 CFR 1.491 of an international application; (c) before the mailing date
Page 1 of 4
NSN677-1002, Page 331
Application No. TBD Information Disclosure Statement
of a first Office Action on the merits; or (d) before the mailing of a first Office Action after the filing of a request for continued examination under 37 CFR 1.114.
❑ Note: This submission includes the Statement under 37 CFR 1.704(d) (see "Statement under 37 CFR 1.704(d)" below), such that no reduction in patent term adjustment is warranted by the filing of this Information Disclosure Statement.
❑ after (a), (b), (c) or (d) above, but before the mailing date of a final action under 37 CFR 1.113, a Notice of Allowance under 37 CFR 1.311, or an action that otherwise closes prosecution in the application, and includes one of:
❑ the Statement under 37 CFR 1.97(e) (see "Statement under 37 CFR 1.97(e)" below).
❑ Note: This submission includes the Statement under 37 CFR 1.704(d) (see "Statement under 37 CFR 1.704(d)" below), such that no reduction in patent term adjustment is warranted by the filing of this Information Disclosure Statement.
— or —
❑ the fee of $180 set forth in 37 CFR 1.17(p) (see "Fees" below).
❑ on or after the mailing date of a final action under 37 CFR 1.113 or a Notice of Allowance under 37 CFR 1.311, or an action that otherwise closes prosecution in the application, and on or before payment of the issue fee, and includes the Statement under 37 CFR 1.97(e) (see "Statement under 37 CFR 1.97(e)" below), and the fee of $180 as set forth in 37 CFR 1.17(p) (see "Fees" below).
❑ on or after the mailing date of a Notice of Allowance under 37 CFR 1.311, and on or before payment of the issue fee, and within thirty days of receiving each item of information contained in the Information Disclosure Statement, and includes the Statement under 37 CFR 1.704(d) (see "Statement under 37 CFR 1.704(d)" below), and the fee of $180 as set forth in 37 CFR 1.17(p) (see "Fees" below). NOTE: This is for original applications except applications for a design patent, filed on or after May 29, 2000, wherein a paper containing only an Information Disclosure Statement in compliance with 37 CFR 1.97 and 1.98 is being filed.
Citation to Other Patent Applications
❑ The following U.S. patent applications are hereby brought to the attention of the Examiner. The U.S. patent applications claim subject matter that may be considered by the Examiner to be similar to the subject matter claimed in the above-identified patent application. Accordingly, these U.S. patent applications and/or the prosecution pertaining thereto may include information considered to be material to the prosecution of the above-identified patent application. Since the Examiner has electronic access to the prosecution histories of these U.S. patent applications, copies of prosecution materials therefrom are not provided herewith, but will be promptly provided if the Examiner so desires and requests same.
Page 2 of 4
NSN677-1002, Page 332
Application No. TBD
Information Disclosure Statement
U.S. APPLICATIONS STATUS (check one)
U.S. APPLICATIONS U.S. FILING DATE Patented Pending Never Issued: Abandoned/Expired
1.
2. 3.
Copies of the References
• Copies of any U.S. patents and published patent applications that are listed on the accompanying Form 1449 are not enclosed herewith. Copies of any other references identified on the accompanying Form 1449 are enclosed herewith.
• For each reference not in the English language, attached is at least one of the following: (a) an English translation in whole or in part or (b) a concise statement of relevance in the form of, for example, an English language counterpart, an English-language abstract, or an English-language version of the search report or action by a foreign patent office in a counterpart foreign application indicating the degree of relevance found by the foreign office.
❑ The references listed on the enclosed Form 1449 were previously identified in the parent application(s) of the present application, and copies of the references were furnished at that time. Accordingly, additional copies of the references are not submitted herewith, so as not to burden the file with duplicate copies of references. The Examiner is respectfully requested to carefully review the references in accordance with the requirements set out in the Manual of Patent Examining Procedure. In accordance with 37 CFR 1.98(d), the details of the parent application(s) relied upon for an earlier filing date under 35 USC 120 in which copies of the references were previously furnished are set out below:
U.S. APPLICATIONS STATUS (check one)
U.S. APPLICATIONS U.S. FILING DATE Patented Pending Abandoned
1.
2. 3.
Statement under 37 CFR 1.97(e)
❑ The undersigned hereby states that each item of information contained in the Information Disclosure Statement was first cited in any communication from a foreign patent office in a counterpart foreign patent application not more than three months prior to the filing of the Information Disclosure Statement.
❑ The undersigned hereby states that no item of information contained in the Information Disclosure Statement was cited in a communication from a foreign patent office in a counterpart foreign patent application, and, to the knowledge of the undersigned after making reasonable inquiry, no item of information contained in the Information Disclosure Statement was known to any individual designated in
Page 3 of 4
NSN677-1002, Page 333
Application No. TBD Information Disclosure Statement
37 CFR 1.56(c) more than three months prior to the filing of the Information Disclosure Statement.
Statement under 37 CFR 1.704(d)
❑ The undersigned hereby states that each item of information contained in the Information Disclosure Statement was first cited in any communication from a foreign patent office in a counterpart application and that this communication was not received by any individual designated in 37 CFR 1.56(c) more than thirty days prior to the filing of the Information Disclosure Statement.
Fees
El No fee is owed by the applicant(s). ❑ Charge Deposit Account No. 12-1216 in the amount of $180.00 (37 CFR 1.17(p)).
Authorization to Charge Additional Fees
• If any additional fees are owed in connection with this communication, please charge Deposit Account No. 12-1216.
Instructions as to Overpayment
• Credit Account No. 12-1216. ❑ Refund
/John K. Winn/ John K. Winn, Reg. No. 58,579 LEYDIG, VOIT & MAYER, LTD. Two Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
Date: June 27, 2011
Page 4 of 4
NSN677-1002, Page 334
Please type a plus sign (+) inside this box
Substitute for form 1449A/B/PTO
INFORMATION DISCLOSURE STATEMENT BY APPLICANT
(Use as many sheets as necessary)
Complete if Known Application Number
Filing Date June 27, 2011 First Named Inventor WU, Wenfu Group Art Unit
Examiner Name
Sheet 1 of 1 Attorney Docket Number HW708564
U.S. PATENT DOCUMENTS
Examiner Initials
Doc. No.
U.S. Patent Document
Name of Patentee or Applicant Date of Publication Filing Date If Appropriate
Application or Patent Number
Kind Code
A A 2009/0286527 Al Cheon et al. November 19, 2009 A B 2006/0153124 Al Kant et al. July 13, 2006 A C 2006/0146803 Al Bae et al. July 6, 2006 A D 2010/0135245 Al Zhu et al. June 3, 2010
FOREIGN PATENT DOCUMENTS
Examiner Initials
Doc. No.
Foreign Patent Document
Name of Patentee or Applicant Date of
Publication Translation * Office
Application or Patent Number
Kind Code
OTHER - NON PATENT LITERATURE DOCUMENTS
Examiner Initials
Doc. No.
Include name of the author (in CAPITAL LETTERS), title of the article (when appropriate), title of the item (book, magazine, journal, serial, symposium, catalog, etc.), date, page(s), volume-issue number (s), publisher, city and/or country where published.
Translation *
A E
"3GPP TS 23.401 — 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; GPRS enhancements for E-UTRAN access (Release 8)," July 2007, Version 1.1.0, 3rd Generation Partnership Project, Valbonne, France.
Examiner Signature Date Considered
" If the reference is not in English, then at least one of the following is provided: (a) an English translation in whole or in part or (b) a concise statement of relevance in the form of, for example, an English language counterpart, an English-language abstract, or an English-language version of the search report or action by a foreign patent office in a counterpart foreign application indicating the degree of relevance found by the foreign office.
NSN677-1002, Page 335
Electronic Patent Application Fee Transmittal
Application Number:
Filing Date:
Title of Invention: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
HANDOVER OR CHANGE OCCURS IN HETERGENEOUS NETWORK
First Named Inventor/Applicant Name: Wenfu WU
Filer: John Knox Winn/Leanna Bultema
Attorney Docket Number: HW708564
Filed as Large Entity
Utility under 35 USC 111(a) Filing Fees
Description Fee Code Quantity Amount Sub-Total in
USD($)
Basic Filing:
Utility application filing 1011 1 330 330
Utility Search Fee 1111 1 540 540
Utility Examination Fee 1311 1 220 220
Pages:
Claims:
Miscellaneous-Filing:
Petition:
Petition fee- 37 CFR 1.17(h) (Group III) 1464 1 130 130
NSN677-1002, Page 336
Description Fee Code Quantity Amount Sub-Total in
USD($)
Patent-Appeals-and-Interference:
Post-Allowance-and-Post-Issuance:
Extension-of-Time:
Miscellaneous:
Total in USD ($) 1220
NSN677-1002, Page 337
Electronic Acknowledgement Receipt
EFS ID: 10394902
Application Number: 13169619
International Application Number:
Confirmation Number: 2286
Title of Invention: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
HANDOVER OR CHANGE OCCURS IN HETERGENEOUS NETWORK
First Named Inventor/Applicant Name: Wenfu WU
Customer Number: 77399
Filer: John Knox Winn/Leanna Bultema
Filer Authorized By: John Knox Winn
Attorney Docket Number: HW708564
Receipt Date: 27-JUN-2011
Filing Date:
Time Stamp: 16:20:30
Application Type: Utility under 35 USC 111(a)
Payment information:
Submitted with Payment yes
Payment Type Deposit Account
Payment was successfully received in RAM $1220
RAM confirmation Number 2966
Deposit Account 121216
Authorized User
The Director of the USPTO is hereby authorized to charge indicated fees and credit any overpayment as follows:
Charge any Additional Fees required under 37 C.F.R. Section 1.17 (Patent application and reexamination processing fees)
Charge any Additional Fees required under 37 C.F.R. Section 1.19 (Document supply fees)
NSN677-1002, Page 338
Charge any Additional Fees required under 37 C.F.R. Section 1.21 (Miscellaneous fees and charges)
File Listing:
Document
Number Document Description File Name
File Size(Bytes)/
Message Digest
Multi
Part /.zip
Pages
(if appl.)
1 Transmittal of New Application Application_Transmittal.pdf
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Warnings:
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2 Application Data Sheet ADS.pdf
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3 Petition for 12-month Accelerated Exam PetitionforSpecialStatus.pdf
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4 Oath or Declaration filed ParentDeclaration.pdf
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Specification 1 44
Claims 45 47
NSN677-1002, Page 339
Abstract 48 48
Drawings-only black and white line drawings 49 60
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This Acknowledgement Receipt evidences receipt on the noted date by the USPTO of the indicated documents, characterized by the applicant, and including page counts, where applicable. It serves as evidence of receipt similar to a Post Card, as described in MPEP 503.
New Applications Under 35 U.S.C. 111 If a new application is being filed and the application includes the necessary components for a filing date (see 37 CFR 1.53(b)-(d) and MPEP 506), a Filing Receipt (37 CFR 1.54) will be issued in due course and the date shown on this Acknowledgement Receipt will establish the filing date of the application.
National Stage of an International Application under 35 U.S.C. 371 If a timely submission to enter the national stage of an international application is compliant with the conditions of 35 U.S.C. 371 and other applicable requirements a Form PCT/DO/E0/903 indicating acceptance of the application as a national stage submission under 35 U.S.C. 371 will be issued in addition to the Filing Receipt, in due course.
New International Application Filed with the USPTO as a Receiving Office If a new international application is being filed and the international application includes the necessary components for an international filing date (see PCT Article 11 and MPEP 1810), a Notification of the International Application Number and of the International Filing Date (Form PCT/RO/105) will be issued in due course, subject to prescriptions concerning national security, and the date shown on this Acknowledgement Receipt will establish the international filing date of the application.
NSN677-1002, Page 341
UNITED STATES PATENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
P.O.Box 1450 Alexandria, VirgLnia 22313-1450 www.uspto.gov
AP NUMBER PLICATION I
371(c)
FILIN
DATE G or I G
UNIT I
IT FIL FEE RECD I ATTY.DOCKET.NO ITOT CLAIMS I IND CLAIMS
13/169,619
06/27/2011
2617
77399 Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
1090 HW708564 14 2
CONFIRMATION NO. 2286
FILING RECEIPT
l imiallooliCIIII0I11111111111111111
Date Mailed: 07/01/2011
Receipt is acknowledged of this non-provisional patent application. The application will be taken up for examination in due course. Applicant will be notified as to the results of the examination. Any correspondence concerning the application must include the following identification information: the U.S. APPLICATION NUMBER, FILING DATE, NAME OF APPLICANT, and TITLE OF INVENTION. Fees transmitted by check or draft are subject to collection. Please verify the accuracy of the data presented on this receipt. If an error is noted on this Filing Receipt, please submit a written request for a Filing Receipt Correction. Please provide a copy of this Filing Receipt with the changes noted thereon. If you received a "Notice to File Missing Parts" for this application, please submit any corrections to this Filing Receipt with your reply to the Notice. When the USPTO processes the reply to the Notice, the USPTO will generate another Filing Receipt incorporating the requested corrections
Applicant(s) Wenfu WU, Shanghai, CHINA; Weihua HU, Shanghai, CHINA; Shanhan WANG, Shanghai, CHINA;
Assignment For Published Patent Application HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CHINA
Power of Attorney: The patent practitioners associated with Customer Number 85854
Domestic Priority data as claimed by applicant This application is a CON of 12/479,216 06/05/2009 which is a CON of PCT/CN2008/071842 07/31/2008
Foreign Applications (You may be eligible to benefit from the Patent Prosecution Highway program at the USPTO. Please see http://www.uspto.gov for more information.) CHINA 200710137568.8 08/07/2007
If Required, Foreign Filing License Granted: 06/29/2011
The country code and number of your priority application, to be used for filing abroad under the Paris Convention, is US 13/169,619
Projected Publication Date: 10/06/2011
Non-Publication Request: No
Early Publication Request: No page 1 of 3
NSN677-1002, Page 342
Title
METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
Preliminary Class
455
PROTECTING YOUR INVENTION OUTSIDE THE UNITED STATES
Since the rights granted by a U.S. patent extend only throughout the territory of the United States and have no effect in a foreign country, an inventor who wishes patent protection in another country must apply for a patent in a specific country or in regional patent offices. Applicants may wish to consider the filing of an international application under the Patent Cooperation Treaty (PCT). An international (PCT) application generally has the same effect as a regular national patent application in each PCT-member country. The PCT process simplifies the filing of patent applications on the same invention in member countries, but does not result in a grant of "an international patent" and does not eliminate the need of applicants to file additional documents and fees in countries where patent protection is desired.
Almost every country has its own patent law, and a person desiring a patent in a particular country must make an application for patent in that country in accordance with its particular laws. Since the laws of many countries differ in various respects from the patent law of the United States, applicants are advised to seek guidance from specific foreign countries to ensure that patent rights are not lost prematurely.
Applicants also are advised that in the case of inventions made in the United States, the Director of the USPTO must issue a license before applicants can apply for a patent in a foreign country. The filing of a U.S. patent application serves as a request for a foreign filing license. The application's filing receipt contains further information and guidance as to the status of applicant's license for foreign filing.
Applicants may wish to consult the USPTO booklet, "General Information Concerning Patents" (specifically, the section entitled "Treaties and Foreign Patents") for more information on timeframes and deadlines for filing foreign patent applications. The guide is available either by contacting the USPTO Contact Center at 800-786-9199, or it can be viewed on the USPTO website at http://www.uspto.gov/web/offices/pac/doc/general/index.html.
For information on preventing theft of your intellectual property (patents, trademarks and copyrights), you may wish to consult the U.S. Government website, http://www.stopfakes.gov. Part of a Department of Commerce initiative, this website includes self-help "toolkits" giving innovators guidance on how to protect intellectual property in specific countries such as China, Korea and Mexico. For questions regarding patent enforcement issues, applicants may call the U.S. Government hotline at 1-866-999-HALT (1-866-999-4158).
LICENSE FOR FOREIGN FILING UNDER
Title 35, United States Code, Section 184
Title 37, Code of Federal Regulations, 5.11 & 5.15
GRANTED
The applicant has been granted a license under 35 U.S.C. 184, if the phrase "IF REQUIRED, FOREIGN FILING LICENSE GRANTED" followed by a date appears on this form. Such licenses are issued in all applications where
page 2 of 3
NSN677-1002, Page 343
the conditions for issuance of a license have been met, regardless of whether or not a license may be required as set forth in 37 CFR 5.15. The scope and limitations of this license are set forth in 37 CFR 5.15(a) unless an earlier license has been issued under 37 CFR 5.15(b). The license is subject to revocation upon written notification. The date indicated is the effective date of the license, unless an earlier license of similar scope has been granted under 37 CFR 5.13 or 5.14.
This license is to be retained by the licensee and may be used at any time on or after the effective date thereof unless it is revoked. This license is automatically transferred to any related applications(s) filed under 37 CFR 1.53(d). This license is not retroactive.
The grant of a license does not in any way lessen the responsibility of a licensee for the security of the subject matter as imposed by any Government contract or the provisions of existing laws relating to espionage and the national security or the export of technical data. Licensees should apprise themselves of current regulations especially with respect to certain countries, of other agencies, particularly the Office of Defense Trade Controls, Department of State (with respect to Arms, Munitions and Implements of War (22 CFR 121-128)); the Bureau of Industry and Security, Department of Commerce (15 CFR parts 730-774); the Office of Foreign AssetsControl, Department of Treasury (31 CFR Parts 500+) and the Department of Energy.
NOT GRANTED
No license under 35 U.S.C. 184 has been granted at this time, if the phrase "IF REQUIRED, FOREIGN FILING LICENSE GRANTED" DOES NOT appear on this form. Applicant may still petition for a license under 37 CFR 5.12, if a license is desired before the expiration of 6 months from the filing date of the application. If 6 months has lapsed from the filing date of this application and the licensee has not received any indication of a secrecy order under 35 U.S.C. 181, the licensee may foreign file the application pursuant to 37 CFR 5.15(b).
page 3 of 3
NSN677-1002, Page 344
PATENT APPLICATION FEE DETERMINATION RECORD Substitute for Form PTO-875
Application or Docket Number
13/169,619
APPLICATION AS FILED - PART I (Column 1) (Column 2)
FOR NUMBER FILED NUMBER EXTRA
BASIC FEE (37 CFR 1.16(a), (b), or (c)) N/A N/A
SEARCH FEE (37 CFR 1.16(k), (i), or (m)) N/A N/A
EXAMINATION FEE (37 CFR 1.16(o), (p), or (q)) N/A N/A
TOTAL CLAIMS (37 CFR 1.16(0) 14 minus 20=
INDEPENDENT CLAIMS (37 CFR 1.16(h)) 2 minus 3 =
APPLICATION SIZE FEE (37 CFR 1.16(s))
If the specification and drawings exceed 100 sheets of paper, the application size fee due is $270 ($135 for small entity) for each additional 50 sheets or fraction thereof. See 35 U.S.C. 41(a)(1)(G) and 37 CFR 1.16(s).
MULTIPLE DEPENDENT CLAIM PRESENT (37 CFR 1.16(j))
* If the difference in column 1 is less than zero, enter "0" in column 2.
APPLICATION AS AMENDED - PART II
SMALL ENTITY OR
OR
OTHER THAN SMALL ENTITY
RATE($) FEE($) RATE($) FEE($)
N/A N/A 330
N/A N/A 540
N/A N/A 220
x 52 = 0.00
x 220 = 0.00
0.00
0.00
TOTAL TOTAL 1090
(Column 1) (Column 2) (Column 3)
OTHER THAN SMALL ENTITY OR SMALL ENTITY
AM
EN
DM
EN
T A
CLAIMS REMAINING
AFTER AMENDMENT
HIGHEST NUMBER
PREVIOUSLY PAID FOR
PRESENT EXTRA
Total (37 CFR 1.16(i))
Minus =
Independent (37 CFR 1.16(h))
Minus .
Application Size Fee (37 CFR 1.16(s))
FIRST PRESENTATION OF MULTIPLE DEPENDENT CLAIM (37 CFR 1.16(j))
RATE($) ADDITIONAL
FEE($)
OR
OR
OR
TOTAL ADD'L FEE
OR
RATE($) ADDITIONAL
FEE($)
x
x
TOTAL ADD'L FEE
(Column 1) (Column 2) (Column 3)
AM
EN
DM
EN
T B
CLAIMS REMAINING
AFTER AMENDMENT
HIGHEST NUMBER
PREVIOUSLY PAID FOR
PRESENT EXTRA
Total (37 CFR 1.16(i))
Minus =
Independent (37 CFR 1.16(h))
Minus =
Application Size Fee (37 CFR 1.16(s))
FIRST PRESENTATION OF MULTIPLE DEPENDENT CLAIM (37 CFR 1.16(j))
RATE($) ADDITIONAL
FEE($) RATE($)
ADDITIONAL FEE($)
OR
OR
OR
x
x
TOTAL ADD'L FEE
TOTAL ADD'L FEE
* If the entry in column 1 is less than the entry in column 2, write "0" in column 3. "" If the "Highest Number Previously Paid For" IN THIS SPACE is less than 20, enter "20".
""" If the "Highest Number Previously Paid For" IN THIS SPACE is less than 3, enter "3". The "Highest Number Previously Paid For (Total or Independent) is the highest found in the appropriate box in column 1.
OR
NSN677-1002, Page 345
1060034752 2010-05.25 17,19,36
A PTOISB/80 (11-08)
Approved for use through 11/30/2011. OMB 0651-0035 U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of Information unless It displays a valid OMB control number.
POWER OF ATTORNEY TO PROSECUTE APPLICATIONS BEFORE THE USPTO
I hereby revoke all previous powers of attorney given in the application identified in the attached statement under 37 CFR 3.73(b). I hereby appoint:
Ell Practitioners associated with the Customer Number:
OR
77399
1-1 Practitioner(s) named below (if more than ten patent practitioners are to be named, then a customer number must be used):
Name Registration Number
,-A Name Registration Number
,1
r .:t p.
--, ,
as a .torney(s) or agent(s) to represent the undersigned be any and all patent applications assigned p_aiy to the undersigned attached to this form in accordance with 37 CFR 3.73(b).
ore the United S according
ates Patent and Trademark Office (USPTO) in connection with to the USPTO assignment records or assignment documents
Please change the correspondence address for the application identified in the attached statement under 37 CFR 3.73(b) to:
0 The address associated with Customer Number: 77399
OR
JFirm or
— Individual Name Address
City State " Zip
Ccuntry
Telephone Email
•
Assignee Name and Address:
Huawei Technologies Co., Ltd. Huawei Administration Building, Bantian, Longgang District, Shenzhen, Guangdong 518129, P. R. China
A copy of this form, together with a statement under 37 CFR 3.73(b) (Form PTO/SB/96 or equivalent) is required to be filed in each application in which this form is used. The statement under 37 CFR 3.73(b) may be completed by one of the practitioners appointed in this form if the appointed practitioner is authorized to act on behalf of the assignee, anci must identify the application in which this Power of Attorney is to be filed.
SIGNATURE of Assignee of Record The individual whose signature and title is supplied below is authorized to act on behalf of the assignee
Signature Date 46k Mogul WIO
Name UN Yafang Telephone 075548357800 Title President This collection of information is required by 37 CFR 1.31, 1.32 and 1.33. The information Is required to obtain or retain a benefit by the public which is to file (and by the USPTO to process) an application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.11 and 1.14. This collection is estimated to take 3 minutes to ccmplete, including gathering, preparing, and submitting the completed application form to the USPTO. Time will vary depending upon the individual case. Any comments on the amount of time you require to complete this form and/or suggestions for reducing this burden, should be sent to the Chief Information Officer, U.S. Patent and Trademark Office, U.S. Department of Commerce, P.O. Box 1450, Alexandria, VA 22313-1450, DO NOT SEND FEES OR COMPLETED FORMS To THIS ADDRESS. SEND TO: Commissioner for Patents, P.O. Box 1450, Alexandria, VA 22313-1450.
If you need assistance In completing the form, call 1-800-PTO-9199 and select option 2.
NSN677-1002, Page 346
Yafang Sun Name
DELEGATION OF AUTHORITY UNDER 37 C.F.R.§ 1.34
Effective this date, I authorize:
John B. Conklin Registration No. 30,369; Dimitry Kapmar Registration No. 62,998; John K. Winn Registration No. 58,579; Philip M. •Pippenger Registration No. 46,055; and Mark Joy Registration No. 35,562
to exercise full authority in United States in which HuAwEJ TECHNOLOGIES CO., L'w., of Fluawei Administration Building, Bantian, Longgang District, Shenzhen, 518129, Guangdong, P.R. China, is an applicant or has ownership interest with respect to the following:
• Signing original, associate or substitute powers of attorney before the United States;
• Signing assignee's consent to changes in inventorship;
• Signing papers required from an assignee in connection with an application for reissue and/or reexamination of a patent;
• Signing terminal disclaimers including, but not limited to, terminal disclaimers to obviate obviousness-type double patenting rejections; and
• Signing all documents before the United States Patent and Trademark Office that can be signed by an assignee in patent matter.
President Title
Feb. 1, 2011 ignature Date
NSN677-1002, Page 347
Electronic Acknowledgement Receipt
EFS ID: 10471592
Application Number: 13169619
International Application Number:
Confirmation Number: 2286
Title of Invention: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
First Named Inventor/Applicant Name: Wenfu WU
Customer Number: 77399
Filer: John B. Conklin/Leanna Bultema
Filer Authorized By: John B. Conklin
Attorney Docket Number: HW708564
Receipt Date: 07-JUL-2011
Filing Date: 27-JUN-2011
Time Stamp: 15:53:06
Application Type: Utility under 35 USC 111(a)
Payment information:
Submitted with Payment no
File Listing:
Document Number
Document Description File Name File Size(Bytes)/ Message Digest
Multi Part /.zip
Pages (if appl.)
1 Assignee showing of ownership per 37
CFR 3.73(b). 3_73b.pdf
423444
no 2
66576667789119e8018739a1f58c8d9ee49
c28cb
Warnings:
Information:
NSN677-1002, Page 348
2 Power of Attorney GENERAL_POA.pdf
78551
no 1
4e17d5a8b448a41c596fe7be270e9e12cc3
a64fd
Warnings:
Information:
44406
3 Miscellaneous Incoming Letter DelegationofA u .pdtfhority_Huawei
no 1
eaa090a8a58a649574711bOacOfcc82f5d33
28d4
Warnings:
Information:
Total Files Size (in bytes): 546401
This Acknowledgement Receipt evidences receipt on the noted date by the USPTO of the indicated documents, characterized by the applicant, and including page counts, where applicable. It serves as evidence of receipt similar to a Post Card, as described in MPEP 503.
New Applications Under 35 U.S.C. 111 If a new application is being filed and the application includes the necessary components for a filing date (see 37 CFR 1.53(b)-(d) and MPEP 506), a Filing Receipt (37 CFR 1.54) will be issued in due course and the date shown on this Acknowledgement Receipt will establish the filing date of the application.
National Stage of an International Application under 35 U.S.C. 371 If a timely submission to enter the national stage of an international application is compliant with the conditions of 35 U.S.C. 371 and other applicable requirements a Form PCT/DO/E0/903 indicating acceptance of the application as a national stage submission under 35 U.S.C. 371 will be issued in addition to the Filing Receipt, in due course.
New International Application Filed with the USPTO as a Receiving Office If a new international application is being filed and the international application includes the necessary components for an international filing date (see PCT Article 11 and MPEP 1810), a Notification of the International Application Number and of the International Filing Date (Form PCT/RO/105) will be issued in due course, subject to prescriptions concerning national security, and the date shown on this Acknowledgement Receipt will establish the international filing date of the application.
NSN677-1002, Page 349
STATEMENT UNDER 37 CFR 3.73(b)
Applicant/Patent Owner: WU et al.
Application No./Patent No.: 13/169,619 Filed/Issue Date: June 27, 2011
Titled: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
Huawei Technologies Co., Ltd. a corporation
(Name of Assignee) (Type of Assignee, e.g., corporation, partnership, university, government agency, etc.
states that it is:
1. X the assignee of the entire right, title, and interest in;
2. 0 an assignee of less than the entire right, title, and interest in (The extent (by percentage) of its ownership interest is %); or
3. 0 the assignee of an undivided interest in the entirety of (a complete assignment from one of the joint inventors was made)
the patent application/patent identified above, by virtue of either:
A. X An assignment from the inventor(s) of the patent application/patent identified above. The assignment was recorded in the United States Patent and Trademark Office at Reel 022788 , Frame 0564 , or for which a copy therefore is attached.
OR
B. 0 A chain of title from the inventor(s), of the patent application/patent identified above, to the current assignee as follows:
1. From: To:
The document was recorded in the United States Patent and Trademark Office at
, Frame , or for which a copy thereof is attached.
2. From: To:
The document was recorded in the United States Patent and Trademark Office at
Reel , Frame , or for which a copy thereof is attached.
3. From: To:
The document was recorded in the United States Patent and Trademark Office at
Reel , Frame , or for which a copy thereof is attached.
0 Additional documents in the chain of title are listed on a supplemental sheet(s).
ri As required by 37 CFR 3.73(b)(1)0), the documentary evidence of the chain of title from the original owner to the assignee was, or concurrently is being, submitted for recordation pursuant to 37 CFR 3.11.
[NOTE: A separate copy (La, a true copy of the original assignment document(s)) must be submitted to Assignment Division in accordance with 37 CFR Part 3, to record the assignment in the records of the USPTO. See MPEP 302.08]
The undersigned (whose title is supplied below) is authorized to act on behalf of the assignee.
/John B. Conklin/ July 7, 2011
Signature Date
John B. Conklin Attorney of Record
Printed or Typed Name Title
Reel
PTO/SB/96 (07-09) Approved for use through 07/31/2012. OMB 0651-0031
U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it displays a valid OMB control number.
This collection of information is required by 37 CFR 3.73(b). The information is required to obtain or retain a benefit by the public which is to file (and by the USPTO to process) an application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.11 and 1.14. This collection is estimated to take 12 minutes to complete, including gathering, preparing, and submitting the completed application form to the USPTO. Time will vary depending upon the individual case. Any comments on the amount of time you require to complete this form and/or suggestions for reducing this burden, should be sent to the Chief Information Officer, U.S. Patent and Trademark Office, U.S. Department of Commerce, P.O. Box 1450, Alexandria, VA 22313-1450. DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS. SEND TO: Commissioner for Patents, P.O. Box 1450, Alexandria, VA 22313-1450.
If you need assistance in completing the form, call 1-800-PTO-9199 and select option 2.
NSN677-1002, Page 350
Privacy Act Statement
The Privacy Act of 1974 (P.L. 93-579) requires that you be given certain information in connection with your submission of the attached form related to a patent application or patent. Accordingly, pursuant to the requirements of the Act, please be advised that: (1) the general authority for the collection of this information is 35 U.S.C. 2(b)(2); (2) furnishing of the information solicited is voluntary; and (3) the principal purpose for which the information is used by the U.S. Patent and Trademark Office is to process and/or examine your submission related to a patent application or patent. If you do not furnish the requested information, the U.S. Patent and Trademark Office may not be able to process and/or examine your submission, which may result in termination of proceedings or abandonment of the application or expiration of the patent.
The information provided by you in this form will be subject to the following routine uses:
1. The information on this form will be treated confidentially to the extent allowed under the Freedom of Information Act (5 U.S.C. 552) and the Privacy Act (5 U.S.0 552a). Records from this system of records may be disclosed to the Department of Justice to determine whether disclosure of these records is required by the Freedom of Information Act.
2. A record from this system of records may be disclosed, as a routine use, in the course of presenting evidence to a court, magistrate, or administrative tribunal, including disclosures to opposing counsel in the course of settlement negotiations.
3. A record in this system of records may be disclosed, as a routine use, to a Member of Congress submitting a request involving an individual, to whom the record pertains, when the individual has requested assistance from the Member with respect to the subject matter of the record.
4. A record in this system of records may be disclosed, as a routine use, to a contractor of the Agency having need for the information in order to perform a contract. Recipients of information shall be required to comply with the requirements of the Privacy Act of 1974, as amended, pursuant to 5 U.S.C. 552a(m).
5. A record related to an International Application filed under the Patent Cooperation Treaty in this system of records may be disclosed, as a routine use, to the International Bureau of the World Intellectual Property Organization, pursuant to the Patent Cooperation Treaty.
6. A record in this system of records may be disclosed, as a routine use, to another federal agency for purposes of National Security review (35 U.S.C. 181) and for review pursuant to the Atomic Energy Act (42 U.S.C. 218(c)).
7. A record from this system of records may be disclosed, as a routine use, to the Administrator, General Services, or his/her designee, during an inspection of records conducted by GSA as part of that agency's responsibility to recommend improvements in records management practices and programs, under authority of 44 U.S.C. 2904 and 2906. Such disclosure shall be made in accordance with the GSA regulations governing inspection of records for this purpose, and any other relevant (i.e., GSA or Commerce) directive. Such disclosure shall not be used to make determinations about individuals.
8. A record from this system of records may be disclosed, as a routine use, to the public after either publication of the application pursuant to 35 U.S.C. 122(b) or issuance of a patent pursuant to 35 U.S.C. 151. Further, a record may be disclosed, subject to the limitations of 37 CFR 1.14, as a routine use, to the public if the record was filed in an application which became abandoned or in which the proceedings were terminated and which application is referenced by either a published application, an application open to public inspection or an issued patent.
9. A record from this system of records may be disclosed, as a routine use, to a Federal, State, or local law enforcement agency, if the USPTO becomes aware of a violation or potential violation of law or regulation.
NSN677-1002, Page 351
06/27/2011 Wenfu WU 13/169,619
77399 Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
HW708564
CONFIRMATION NO. 2286 POA ACCEPTANCE LETTER
1111111111111111111111111CIIII0I111!1411,11111111111111111111111
UNITED STATES PATENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
PO. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
APPLICATION NUMBER
FILING OR 371(C) DATE
FIRST NAMED APPLICANT
ATTY. DOCKET NO./TITLE
Date Mailed: 07/15/2011
NOTICE OF ACCEPTANCE OF POWER OF ATTORNEY
This is in response to the Power of Attorney filed 07/07/2011.
The Power of Attorney in this application is accepted. Correspondence in this application will be mailed to the above address as provided by 37 CFR 1.33.
/ddinh/
Office of Data Management, Application Assistance Unit (571) 272-4000, or (571) 272-4200, or 1-888-786-0101
page 1 of 1
NSN677-1002, Page 352
06/27/2011 Wenfu WU 13/169,619
77399 Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
HW708564
CONFIRMATION NO. 2286 POWER OF ATTORNEY NOTICE
1111111111111111111111111CIIII0I111!14111,11111111111111111111111
UNITED STATES PATENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
PO. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
APPLICATION NUMBER
FILING OR 371(C) DATE
FIRST NAMED APPLICANT
ATTY. DOCKET NO./TITLE
Date Mailed: 07/15/2011
NOTICE REGARDING CHANGE OF POWER OF ATTORNEY
This is in response to the Power of Attorney filed 07/07/2011.
• The Power of Attorney to you in this application has been revoked by the assignee who has intervened as provided by 37 CFR 3.71. Future correspondence will be mailed to the new address of record(37 CFR 1.33).
/ddinh/
Office of Data Management, Application Assistance Unit (571) 272-4000, or (571) 272-4200, or 1-888-786-0101
page 1 of 1
NSN677-1002, Page 353
EXAMINER
ART UNIT
PAPER NUMBER
2617
NOTIFICATION DATE
DELIVERY MODE
07/20/2011
ELECTRONIC
UNITED STATES PATENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
P.O. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
APPLICATION NO. FILING DATE
FIRST NAMED INVENTOR
ATTORNEY DOCKET NO. CONFIRMATION NO.
13/169,619
06/27/2011
Wcnfu WU
HW708564
2286
77399 7590 07/20/2011
Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
Please find below and/or attached an Office communication concerning this application or proceeding.
The time period for reply, if any, is set in the attached communication.
Notice of the Office communication was sent electronically on above-indicated "Notification Date" to the following e-mail address(es):
[email protected] [email protected]
PTOL-90A (Rev. 04/07)
NSN677-1002, Page 354
UNITED STATES PATENT AND TRADEMARK OFFICE
Commissioner for Patents United States Patent and Trademark Office
P.O. Box 1450 Alexandria, VA 22313-1450
www.usoto.aov
Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago IL 60601
In re Application of: WU, WENFU, et al.
Serial No.: 13/169,619 Filed: June 27, 2011
Title: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
DECISION ON PETITION TO MAKE SPECIAL FOR NEW APPLICATION UNDER 37 C.F.R. § 1.102 & M.P.E.P. §
708.02
The petition to make the application special filed June 27, 2011 is GRANTED.
The application is eligible for accelerated examination and the petition complies with the conditions for granting the application special status pursuant to the "Change to Practice for Petitions in Patent Applications to Make Special and for Accelerated Examination" published June 26, 2006, in the Federal Register. (71 Fed. Reg. 36323).
The prosecution of the instant application will be conducted expeditiously according to the following guidelines.
1. The application will be docketed to an examiner and taken up for action within two weeks of the date of this decision.
2. Restriction Practice: If the examiner determines that the claims are not directed to a single invention, a telephone request to elect one single invention will be made pursuant to MPEP 812.01. As a prerequisite to the grant of this petition, the applicant has agreed to make an oral election, by telephone, without traverse. If the applicant refuses to make an election without traverse, or the examiner cannot reach the applicant after a reasonable effort, the
NSN677-1002, Page 355
Application Serial No. 13/169,619 2 Decision on Petition
examiner will treat the first claimed invention (invention defined by claim 1) as having being constructively elected without traverse for examination.
3. Office action: If it is determined that, after appropriate consultation, there is a potential rejection or any other issue to be addressed, the examiner will telephone the applicant and arrange an interview to discuss and resolve the issue. An Office action, other than a Notice of Allowance and Fee(s) Due (Notice of Allowance), will not be issued unless either: 1) an interview was conducted but did not result in agreed to action that places the application in condition for allowance, or, 2) a determination is made that an interview would be unlikely to result in the application being placed in condition for allowance, and 3) an internal conference has been held to review any rejection of any claim.
4. Time for Reply: An Office action other than a Notice of Allowance or a final Office action will set a shortened statutory period of one month or thirty days, whichever is longer, for reply with no extension of time available under 37 CFR 1.136(a). Failure to timely file a reply within this non-extendible period for reply will result in the abandonment of the application.
5. Reply by Applicant: . A timely reply to an Office action other than the Notice of Allowance must be submitted electronically via EFS or EFS-web and limited to addressing the rejections, objections and requirement made. Any amendment that attempts to: 1) add claims which would result in more than three pending independent claims or more than twenty pending total claims; 2) present claims not encompassed by the pre-examination search or an updated accelerated examination support document; or 3) present claims that are directed a non-elected invention or an invention other than that previously claimed and examined in the application, will be treated as not fully responsive and will not be entered:
For any amendment to the claims (including any new claim) that is not encompassed by the accelerated examination support document, applicant must provide an updated accelerated examination support document that encompasses the amended or new claims at the time of filing of the amendment.
To proceed expeditiously with the examination, it is recommended that a reply with amendments made to any claim or with any new claim being added be accompanied by an updated accelerated examination support document or a statement explaining how the amended or new claim is supported by the original accelerated examination support document.
6. Information Disclosure Statement (IDS): Any IDS filed during prosecution must be submitted electronically via EFS or EFS-web, accompanied by an updated accelerated examination support document, and be in compliance with 37 CFR 1.97 and 1.98.
NSN677-1002, Page 356
Application Serial No. 13/169,619 3 Decision on Petition
7. Post-Allowance Processing: To expedite processing of the allowed application into a patent, the applicant must: 1) pay the required fees within one month of the date of the Notice of Allowance, and 2) not file any post allowance papers not required by the Office. In no event may the issue fee be paid and accepted later than three months from the date of the Notice of Allowance.
8. After-Final and Appeal Procedures: To expedite prosecution, after receiving the final Office action, applicant must: 1) promptly file a notice of appeal, an appeal brief and appeal fees; and 2) not request a pre-appeal brief conference.
Any amendment, affidavit or other evidence filed after final Office action must comply with applicable rules and the requirements outlined in numbered paragraphs 5 and 6 above.
On appeal, the application will proceed according to normal appeal procedures. After appeal, the application will again be treated special.
9. Proceedings Outside the Normal Examination Process: If the application becomes involved in a proceeding that is outside the normal examination process (e.g., a secrecy order, national security review, interference proceeding, petitions under 37 CFR 1.181, 182 or 183), the application will be treated special before and after such proceeding.
10. Final Disposition: The twelve month goal of this accelerated examination procedure ends with a final disposition. The mailing of a final Office action, a Notice of Allowance, the filing of a Notice of Appeal, or the filing of a Request for Continued Examination (RCE) is the final disposition.
If, during prosecution, a paper is not filed electronically using EFS-web, a reply is filed but is not fully responsive, the application is involved in an appeal, or a proceeding outside normal examination process, the application will still be examined expeditiously, however, the final disposition may occur more than twelve months from the filing of the application.
Any inquiry regarding this decision should be directed to Ken Wieder, Quality Assurance Specialist, at (571) 272-2986.
/Kenneth A. Wieder/
Kenneth A. Wieder Quality Assurance Specialist Technology Center 2600 Communications
NSN677-1002, Page 357
Please type a plus sign (+) inside this box
Substitute for form 1449A/B/PTO
INFORMATION DISCLOSURE STATEMENT BY APPLICANT
(Use as many sheets as necessary)
Complete if Known Application Number 13/169,619 Filing Date June 24, 2011 First Named Inventor WU, Wenfu Group Art Unit 2617 Examiner Name NGUYEN, David Q
Sheet 1 of 2 Attorney Docket Number HW708564
OLU.S. PATENT DOCUMENTS
Examiner Initials
Doc. No.
U.S. Patent Document
Name of Patentee or Applicant Date of Publication Filing Date If Appropriate
Application or Patent Number
Kind Code
A F 2008/0304454 Al Zhong et al. December 11, 2008
FOREIGN PATENT DOCUMENTS
Examiner Initials
Doc. No.
Foreign Patent Document
Name of Patentee or Applicant Date of Publication Translation* Office Application or
Patent Number Kind Code
A G EP 1713207 Al Huawei Tech. Co., Ltd. October 18, 2006 A H EP 2007160 Al Nokia Siemens Networks Oy December 24, 2008
A I WO 2007/024115 Al Electronics and Telecommunications Research Institute
March 1, 2007
A J WO 2006/029663 Al Matasushita Electric Inc. Co., Ltd. March 23, 2006 A K WO 2006/088331 Al LG Electronics Inc. August 24, 2006 A L CN 1881919 A Huawei Tech. Co., Ltd. December 20, 2006 (b) A M CN 1878389 A Huawei Tech. Co., Ltd. December 13, 2006 (b)
OTHER - NON PATENT LITERATURE DOCUMENTS
Examiner Initials
Doc. No.
Include name of the author (in CAPITAL LETTERS), title of the article (when appropriate), title of the item (book, magazine, journal, serial, symposium, catalog, etc.), date, page(s), volume-issue number (s), publisher, city and/or country where published.
Translation *
A N 1St Office Action in corresponding Russian Application No. 2009142607 (July 31, 2008).
(a)
A 0 1st Office Action in corresponding Chinese Application No. 200710137568.8 (July 17, 2009).
(a)
A P Written Opinion of the International Searching Authority in corresponding PCT Application No. PCT/CN2008/071842 (November 20, 2008).
A Q International Search Report in corresponding PCT Application No. PCT/CN2008/071842 (November 20, 2008).
A R Extended European Search Report in corresponding European Application No. 08783835.5 (February 24, 2010).
A S
"3GPP TS 23.060 - 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; General Packet Radio Service (GPRS); Service description; Stage 2 (Release 8)," June 2008, Version 8.1.0, 3rd Generation Partnership Project, Valbonne, France.
AT "3GPP TS 23.401 - 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; GPRS enhancements for E-UTRAN access (Release 8)," Version 1.1.1, 3rd Generation Partnership Project, Valbonne, France.
A U
"3GPP TS 23.402 — 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture Enhancements for non-3GPP accesses (Release 8)," June 2007, Version 1.1.0, 3rd Generation Partnership Project, Valbonne, France.
A V
"3GPP TS 23.402 — 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture Enhancements for non-3GPP accesses (Release 8)," July 2007, Version 1.2.0, 3rd Generation Partnership Project, Valbonne, France.
Examiner Signature Date Considered
" If the reference is not in English, then at least one of the following is provided: (a) an English translation in whole or in part or (b) a concise statement of relevance in the form of, for example, an English language counterpart, an English-language abstract, or an English-language version of the search report or action by a foreign patent office in a counterpart foreign application indicating the degree of relevance found by the foreign office.
NSN677-1002, Page 358
Please type a plus sign (+) inside this box
Substitute for form 1449A/B/PTO
INFORMATION DISCLOSURE STATEMENT BY APPLICANT
(Use as many sheets as necessary)
Complete if Known Application Number 13/169,619 Filing Date June 24, 2011 First Named Inventor WU, Wenfu Group Art Unit 2617 Examiner Name NGUYEN, David Q
Sheet 2 of 2 Attorney Docket Number HW708564
OTHER - NON PATENT LITERATURE DOCUMENTS
Examiner Initials
Doc. No.
Include name of the author (in CAPITAL LETTERS), title of the article (when appropriate), title of the item (book, magazine, journal, serial, symposium, catalog, etc.), date, page(s), volume-issue number (s), publisher, city and/or country where published.
Translation "
A W
"3GPP TS 29.213 - 3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; Policy and Charging Control signalling flows and QoS parameter mapping; (Release 8)," May 2008, Version 8.0.0, 3rd Generation Partnership Project, Valbonne, France.
AX Image File Wrapper in corresponding US Application No. 12/479,216 (July 27, 2011).
Examiner Signature Date Considered
" If the reference is not in English, then at least one of the following is provided: (a) an English translation in whole or in part or (b) a concise statement of relevance in the form of, for example, an English language counterpart, an English-language abstract, or an English-language version of the search report or action by a foreign patent office in a counterpart foreign application indicating the degree of relevance found by the foreign office.
NSN677-1002, Page 359
iii 1111 (19)
Europaisches Patentamt
European Patent Office
Office europeen des brevets (11) EP 1 713 207 Al
(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES Fl FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
(30) Priority: 02.02.2004 CN 200410000476 09.04.2004 CN 200410033722
(71) Applicant: Huawei Technologies Co., Ltd. Longgang District, Shenzhen, Guangdong 518129 (CN)
(72) Inventors: • ZHANG, Wenlin,
Huawei Administration Building Shenzhen, Guangdong 518129 (CN)
• ZHANG, Hai, Huawei Administration Building Shenzhen, Guangdong 518129 (CN)
(74) Representative: Thun, Clemens Mitscherlich & Partner Sonnenstrasse 33 80331 Munchen (DE)
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(12) EUROPEAN PATENT APPLICATION published in accordance with Art. 158(3) EPC
(43) Date of publication: 18.10.2006 Bulletin 2006/42
(21) Application number: 05700469.9
(22) Date of filing: 21.01.2005
(51) Int Cl.: HO4L 12/28 (200"1)
(86) International application number: PCT/CN2005/000095
(87) International publication number: WO 2005/076532 (18.08.2005 Gazette 2005/33)
(54) THE INTERACTIVE METHOD FOR RE-SELECTING THE OPERATION NETWORK BY THE WIRELESS AREA NETWORK WLAN USER TERMINAL
(57) The present invention discloses an interactive method for a WLAN UE accessing a new operation net-work, which comprises: when the WLAN UE which has accessed a Visited Mobile Communication Network needs to re-select another Visited Mobile Communica-tion Network to access, the WLAN UE sending authen-tication information to a Home Network of the WLAN UE through a WLAN Access Network and the Visited Mobile Communication Network newly selected by the WLAN UE; after receiving the authentication information, the Home Network of the WLAN UE authenticate the WLAN UE according to the authentication information via the Visited Mobile Communication Network newly selected by the WLAN UE, and sending an access instruction to the WLAN Access Network through the Visited Mobile Communication Network; and On receiving the access instruction, the WLAN Access Network completing dis-connection and/or access between the WLAN UE and the corresponding Visited Mobile Communication Net-works. The method enables a WLAN UE to reselect an-other Visited Mobile Communication Network after ac-cessing a Visited Mobile Communication Network.
Printed by Jouve, 75001 PARIS (FR)
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Description
Field of the Technology
[0001] The present invention relates to operation net-work selection technology, and more specifically relates to a method for a User Equipment (UE) in Wireless Local Area Network (WLAN) reselecting a new operation net-work.
Background of the Invention
[0002] As users' requirements on the wireless access rate are becoming higher and higher, WLAN which is able to provide a higher wireless access rate of data in a relatively small area has emerged as the times require. WLAN involves various kinds of techniques, the most extensively used technical standard of which is IEEE 802.11 b, which uses the frequency band of 2.4GHz and the data transmission rate of which is up to 11Mbps. Oth-er technical standards using the same frequency band include IEEE 802.11g and Bluetooth, wherein, the data transmission rate of IEEE 802.11g is up to 54Mbps. Other new standards of WLAN, such as IEEE 802.11 a and ETSI BRAN Hiperlan2, use the frequency band of 5GHz, and the transmission rate of which can be up to 54 Mbps as well. [0003] Although WLAN involves various kinds of wire-less access techniques, most WLAN techniques utilize IP data packets for data transmission. The specific WLAN access technique adopted by a wireless IP network is usually transparent to the upper IP level. Such a wireless IP network is usually configured with Access Points (AP) for implementing wireless access of a WLAN UE, and with controlling and connecting devices for implementing IP data transmission. [0004] Along with the appearance and development of WLAN, the inter-working of WLAN with various wireless mobile communication networks, such as GSM, CDMA, WCDMA, TD-SCDMA, and CDMA2000 has become the focus of research. In accordance with the 3GPP (3rd Gen-eration Partner Project) standards, a WLAN UE is not only able to connect with Internet and Intranet via the access network of WLAN, but also able to connect with the home network and the visited network of a 3GPP system via the WLAN Access Network. To be specific, when accessing locally, the WLAN UE is able to connect to the 3GPP Home Network via the WLAN Access Net-work, as shown in Figure 2; when in case of roaming, the WLAN UE is able to connect to the Visited Network of the 3GPP system via the WLAN Access Network. And as some entities of the 3GPP Visited Network are con-nected with some corresponding entities of the 3GPP Home Network, for instance, the 3GPP Authentication, Authorization and Accounting (AAA) Proxy in the 3GPP Visited Network is connected with the 3GPP AAA Server in the 3GPP Home Network, the WLAN Access Gate (WAG) in the 3GPP Visited Network is connected with
the Packet Data Gateway (PDG) in the 3GPP Home Net-work, and etc., as shown in Figure 1. Wherein, Figure 1 and Figure 2 respectively illustrate the architecture of an inter-working network of a WLAN system and a 3GPP
5 system under roaming and non-roaming circumstances. [0005] As shown in Figure 1 and Figure 2, a 3GPP system primarily comprises Home Subscriber Server (HSS)/ Home Location Register (HLR), 3GPP AAA Serv-er, 3GPP AAA Proxy, WAG, PDG, Charging Gateway
10 (CGw)/Charging information Collecting Function (CCF) and Online Charging System (OCS). WLAN UEs, WLAN access network, and all the entities of the 3GPP system together construct a 3GPP-WLAN inter-working network, which can be used as a WLAN service system. In this
15 service system, 3GPP AAA Server is in charge of the authentication, authorization, and accounting of a WLAN UE, collecting the charging information sent from the WLAN access network and sending the charging infor-mation to the charging system; the PDG is in charge of
20 the transmission of the user's data from the WLAN Ac- cess Network to the 3GPP network or other packet switching networks; and the charging system is in charge of receiving and recording the user's charging informa-tion sent from the network, and the OCS takes charge of
25 instructing the network to periodically send online charg- ing information in accordance with the expenses of the online charged users, meanwhile collecting statistics and controlling the network. [0006] In the case of non-roaming, when a WLAN UE
30 desires to access the Internet/Intranet directly, the WLAN UE can access to the Internet/Intranet via the WLAN Ac-cess Network after an authentication process with an AAA server (AS) via the WLAN Access Network. If the WLAN UE desires to access the services of 3GPP PS
35 domain as well, it should further request the services of Scenario 3 from the 3GPP Home Network, which com-prises: the WLAN UE sends a Service Authorization Re-quest of Scenario 3 to the AS of the 3GPP Home Network, and the AS performs authentication and authorization to
40 the Service Authorization Request, if the authentication and authorization are successful, the AS sends an Ac-cess Permission Message to the WLAN UE and assigns a corresponding PGD for the WLAN UE. After establish-ing a tunnel with the assigned PDG, the WLAN UE can
45 access 3GPP PS domain services. At the same time, CGw/CCF and OCS records accounting information ac-cording to the use of network by the WLAN UE. In case of roaming, if a WLAN UE desires to access the Internet/ Intranet directly, the WLAN UE will make a request to the
50 3GPP Home Network via the 3GPP Visited Network for accessing the Internet/Intranet. If the WLAN UE desires to access 3GPP PS domain services requesting a Sce-nario 3 services as well, the WLAN UE needs to initiate a Service Authentication procedure via the 3GPP Visited
55 Network to 3GPP Home Network, and similarly, the pro- cedure is also implemented between the WLAN UE and the AS of the 3GPP Home Network. After the authenti-cation procedure succeeds, the AS assigns a corre-
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sponding Home PGD for the WLAN UE, and after a tunnel with the assigned PDG is established via the WAG of 3GPP access network, the WLAN UE can access 3GPP PS domain services.
Step 404-405: After receiving the packet sent from the WLAN UE, the WLAN Access Network finds that the network selection information in the packet does not belong to the Mobile Communication Network
[0007] In 3GPP-WLAN inter-working networks, if a WLAN UE connects with multiple 3GPP Visited Net-
5 currently connected with the WLAN Access Network, and then sends a network notification signaling con-
works, which refer to a plurality of Mobile Communication taining the information of all the Mobile Communica- Networks, there are two schemes, as shown in Figure 3 and Figure 4 respectively, for the WLAN UE selecting a proper Mobile Communication Network to access ac- 10
tion Networks connected with it to the WLAN UE.
Step 406-407: On receiving the signaling, the WLAN cording to its own requirements. Figure 3 represents a UE reselects a Mobile Communication Network to successful process illustrating the WLAN UE directly se- access according to the information of the Mobile lecting a Mobile Communication Network to access, which comprises:
Communication Networks contained in the informa-tion signaling, and then sends a User Identity Re-
15 sponse packet carrying the selection information of Step 301-303: After establishing a wireless connec- the newly selected network to the WLAN Access Net- tion between the WLAN UE and a WLAN Access work. Network, the network or the WLAN UE initiates an access authentication procedure, the WLAN Access Step 408-409: These steps are exactly the same as Network sends a User Identity Request packet to the 20 Step 305-306. WLAN UE; and after receiving the request packet, the WLAN UE returns a User Identity Response [0009] It can be seen from above schemes, there has packet carrying network selection information to the been a relative consummate flow fora WLAN UE to select WLAN Access Network. Here, the network selection an access network in 3GPP-WLAN inter-working net- information refers to the information of the Mobile 25 works, however, when a WLAN Access Network con- Communication Network connected with the WLAN nects with a plurality of VPLMN at the same time, and network and also to be accessed by the current after a certain WLAN UE has accessed one of these WLAN UE; the access authentication procedure be-tween the WLAN Access Network and the WLAN
VPLMN networks through the WLAN Access Network, the WLAN UE may need to disconnect the VPLMN net-
UE is based on an Expandable Authentication Pro- 30 work it currently connects and reselect another VPLMN tocol (EAP) procedure. In general, the network se- network connected with the WLAN Access Network due lection information is carried in a User Identity Field to different reasons, such as charge, range of access defined by a Network Access Identity (NAI) format. service and so on; or the current WLAN UE expects to
access Service A through VPLMNI and access Service Step 304-306: After receiving the packet sent from 35 B through VPLMN2 at the same time. No specific scheme the WLAN UE, the WLAN Access Network judges whether the network selection information in the packet belongs to the Mobile Communication Net-work currently connected with the WLAN, if yes, the
is proposed at present to resolve the above problems.
Summary of the Invention
WLAN Access Network determines a 3GPP AAA ao [0010] In view of the above description, the main object Agent or a 3GPP AAA Server of the Mobile Commu- of the present invention is to provide a method for a WLAN nication Network selected by the WLAN UE accord- UE reselecting a mobile communication network, making ing to NAI, and then sends the user identity and an the WLAN UE reselect another Visited Mobile Commu- Access Authentication Request to the determined nication Network to access after accessing one Visited 3GPP AAA Agent or 3GPP AAA Server, making 45 Mobile Communication Network. 3GPP AAA Agent or 3GPP AAA Server authenticate [0011] To obtain the above object, the technical to the currently accessing WLAN UE; if the authen- scheme of the present invention is implemented as fol- tication is passed, the subsequent access procedure lows: will be accomplished.
50 A method for a WLAN UE accessing a new mobile [0008] Figure 4 represents a process illustrating a communication network, which comprises: WLAN UE reselecting a Mobile Communication Network to access according to the sent network selection infor- when the WLAN UE which has accessed a Vis- mation when the first selection fails, which comprises: ited Mobile Communication Network needs to
55 re-select another Visited Mobile Communica- Step 401-403: These steps are exactly the same as tion Network to access, the WLAN UE sends Step 301-303. authentication information to a Home Network
of the WLAN UE through a WLAN Access Net-
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Mobile Communication Network that the WLAN UE has accessed, and disconnects the connection be-tween the WLAN UE and the Visited Mobile Com-munication Network that the WLAN UE has ac-
5 cessed.
work and the Visited Mobile Communication Network newly selected to access by the WLAN UE;
on receiving the authentication information via the new selected Visited Mobile Communication Network, the Home Network of the WLAN UE authenticates the WLAN UE, and sends an ac-cess instruction to the WLAN Access Network through the new selected Visited Mobile Com-munication Network; and
on receiving the access instruction, the WLAN Access Network completes disconnection and/or access between the WLAN UE and the 15
corresponding Visited Mobile Communication Networks.
[0012] There are several alternative methods to imple- ment the above method, which are as follows: 20
10
In the third case, before the Home Network authen-ticates the WLAN UE, the method further comprises: the Home Network judging whether to permit the WLAN UE to access the Visited Mobile Communi-cation Network newly selected by the WLAN U E, and if permitted, continues to authenticate the WLAN UE from the Visited Mobile Communication Network newly selected by the WLAN UE; if not permitted, the step of sending an access in-struction comprises: the Home Network sends an Access Rejection message to the WLAN Access Network via the Visited Mobile Communication Net-work newly selected by the WLAN UE; and
The step of corn pleting disconnection and/or access between the WLAN UE and the corresponding Vis-ited Mobile Communication Networks comprises the WLAN Access Network returning the Access Rejec-
25 tion message to the WLAN UE.
In the first case, before the Home Network authen-ticates the WLAN UE, the method further comprises: the Home Network of the WLAN UE sends a Discon-nection message to the Visited Mobile Communica-tion Network that the WLAN UE has accessed, and disconnects the connection between the WLAN UE and the Visited Mobile Communication Network that the WLAN UE has accessed; the step of sending an access instruction comprises: 30
the Home Network sends an Access Permission message or an Access Rejection message to the WLAN Access Network through the Visited Mobile Communication Network newly selected by the WLAN UE; and
35
the step of completing disconnection and access be-tween the WLAN UE and the corresponding Visited Mobile Communication Networks comprises: the WLAN Access Network judges whether the Access Permission message is received, if so, establishes 40
a connection between the WLAN UE and the Visited Mobile Communication Network newly selected by the WLAN UE, and completes the access of the WLAN UE to the Visited Mobile Communication Net-work newly selected by the WLAN UE; otherwise, 45
returns the Access Rejection message to the WLAN UE.
In the second case, before the Home Network au-thenticates the WLAN UE, the method further com- 50
prises: judging whether the WLAN UE is permitted to access more than one Visited Mobile Communi-cation Networks simultaneously, and if so, the Home Network of the WLAN UE determines whether to send a Disconnection message to the Visited Mobile 55
Communication Network that the WLAN UE has ac-cessed; otherwise, the Home Network of the WLAN UE sends a Disconnection message to the Visited
[0013] Wherein, the step of judging further comprises: determining whether to permit the WLAN UE to access more than one Visited Mobile Communication Networks simultaneously, and if permitted, judges whether to per-mit the WLAN UE to access the Visited Mobile Commu-nication Network newly selected by the WLAN UE; and otherwise, the WLAN UE is considered not to be permit-ted to access to the Visited Mobile Communication Net-work newly selected. [0014] The Access Rejection message further carries a piece of information indicating the reason of rejection. [0015] In the fourth case, after the authentication to the WLAN UE is successful, the step of sending an ac-cess instruction comprises: the Home Network sends an Access Permission message to the WLAN Access Net-work via the Visited Mobile Communication Network newly selected by the WLAN UE; the step of completing disconnection and/or access be-tween the WLAN UE and the corresponding Visited Mo-bile Communication Networks comprises: according to the received Access Permission message, the WLAN Access Network establishes a connection between the WLAN UE and the Visited Mobile Communication Net-work newly selected by the WLAN UE, and completes the access of the WLAN UE and the Mobile Visited Com-munication Network newly selected by the WLAN UE. [0016] Wherein, while sending the Access Permission message to the Visited Mobile Communication Network newly selected by the WLAN UE, the Home Network sends a Disconnection message to the Visited Mobile Communication Network that the WLAN UE has ac-cessed;
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[0017] The step of completing disconnection and/or access between the WLAN UE and the corresponding Visited Mobile Communication Networks further com-prises: disconnecting the connection between the WLAN UE and the Visited Mobile Communication Network that the WLAN UE has accessed. [0018] In the present scheme, before sending the Dis-connection message to the WLAN Access Network via the Visited Mobile Communication Network that the WLAN UE has accessed, the method further comprises: judging whether to permit the WLAN UE to access more than one Visited Mobile Communication Networks simul-taneously, if so, the Home Network of the WLAN UE de-termines whether a Disconnection message to be sent to the Visited Mobile Communication Network that the WLAN UE has accessed if necessary; otherwise, the Home Network sends the Disconnection message to the WLAN Access Network via the Visited Mobile Commu-nication Network that the WLAN UE has accessed. [0019] In the present scheme, the method further com-prises: implementing re-authentication for the WLAN UE via the Visited Mobile Communication Network that the WLAN UE has accessed; and/or sending advertisement information to inform the WLAN UE that more than one connection existis in the WLAN UE; or doing nothing. [0020] In the fifth case, after the authentication is suc-cessful, the step of sending an access instruction com-prises: the Home Network sending an Access Permission message to the WLAN Access Network via the Visited Mobile Communication Network newly selected by the WLAN UE; the step of completing disconnection and/or access be-tween the WLAN UE and the corresponding Visited Mo-bile Communication Networks comprises: according to the received Access Permission message, the WLAN Access Network establishes a connection between the WLAN UE and the Visited Mobile Communication Net-work newly selected by the WLAN UE, completes the access of the WLAN UE and the Mobile Visited Commu-nication Network newly selected by the WLAN UE, and disconnect the connection between the WLAN UE and the Mobile Visited Communication Network that the WLAN UE has accessed. [0021] Wherein, after the WLAN Access Network com-pletes the access of the WLAN UE and the Mobile Visited Communication Network newly selected by the WLAN UE, the method further comprises: judges whether to per-mit the WLAN UE to access more than one Visited Mobile Communication Networks simultaneously, if so, the WLAN Access Network determines whether a Discon-nection message to be sent to the Visited Mobile Com-munication Network that the WLAN UE has accessed; otherwise, disconnects the connection between the WLAN UE and the Mobile Visited Communication Net-work that the WLAN UE has accessed. [0022] In the above schemes, the WLAN UE is permit-ted to access more than one Visited Mobile Communi-cation Networks simultaneously, and no Disconnection
message needs to be sent to the Visited Mobile Commu-nication Network that the WLAN UE has accessed, the method further comprises: implements re-authentication for the WLAN UE via the Visited Mobile Communication
5 Network that the WLAN UE has accessed; and/or send- ing advertisement information to inform the WLAN UE that more than one connection existing in the WLAN UE; or doing nothing. [0023] Where, the step of sending an access instruc-
10 tion comprises: sending a notification to the WLAN UE via one of the existing connections, or sending a notifi-cation to the WLAN UE through the newly established connection. The notification comprises total numbers of the current connections, and/or specific selection infor-mation of the connections. [0024] In the above schemes, a threshold of the max-imum number of the permitted simultaneous connections of the WLAN UE is preset; if the WLAN UE is permitted to access more than one Visited Mobile Communication
20 Networks simultaneously, the method further compris- ing: judging whether the number of the current simulta-neous connections exceeds the threshold of the maxi-mum number of the simultaneous connections, if not ex-ceed, continuing with subsequent operations; otherwise,
25 rejecting the authentication request of the current con- nection directly, or performing the authentication request of current connection and informing the current WLAN UE to select and remove one or more than one existing connections.
30 [0025] In above scheme, when the authentication for the authentication request from the newly selected Vis-ited Mobile Communication Network implemented by the Home Network succeeds, the step of completing discon-nection and/or access between the WLAN UE and the
35 corresponding Visited Mobile Communication Networks comprises:
c1. the WLAN Access Network judges whether the Access Permission message from the Visited Mobile
40 Communication Network newly selected by the WLAN UE is received first, if so, proceeds to Step c2; if the Disconnection message is received first, proceeds to Step c3;
45 c2. collects and sends charging information to the Visited Mobile Communication Network that the WLAN UE has accessed, and disconnects the con-nection between the WLAN UE and the Visited Mo-bile Communication Network that the WLAN UE has
50 accessed; and at the same time, establishes a con- nection between the WLAN UE and the Visited Mo-bile Communication Network newly selected by the WLAN UE, and completes the access of the WLAN UE and the Visited Mobile Communication Network
55 newly selected by the WLAN UE and then completes the current re-selection process;
c3. collects and sends charging information to the
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Visited Mobile Communication Network that the WLAN UE has accessed, and disconnects the con-nection between the WLAN UE and the Visited Mo-bile Communication Network that the WLAN UE has accessed, then waits for the Access Permission message from the Visited Mobile Communication Network newly selected by the WLAN UE; and after receiving the Access Permission message, estab-lishes a connection between the WLAN UE and the Visited Mobile Communication Network newly se-lected by the WLAN UE, and completes the access of the WLAN UE and the Visited Mobile Communi-cation Network newly selected by the WLAN UE.
[0026] Where, the method further comprising before Step c3: judging whether the received Disconnection message is a Disconnection message generated by a successful authentication, if so, waiting for the Access Permission message from the Visited Mobile Communi-cation Network newly selected by the WLAN UE, and after receiving the Access Permission message, collect-ing and sending charging information to the Visited Mo-bile Communication Network that the WLAN UE has ac-cessed, and disconnecting the connection between the WLAN UE and the Visited Mobile Communication Net-work that the WLAN UE has accessed; and at the same time, establishing a connection between the WLAN UE and the Visited Mobile Communication Network newly selected by the WLAN UE, and completing the access of the WLAN UE and the Visited Mobile Communication Network newly selected by the WLAN UE; otherwise, continuing with Step c3. [0027] In above scheme, when the authentication for the authentication request from the newly selected Vis-ited Mobile Communication Network implemented by the Home Network fails, the step of sending an access in-struction comprises: the Home Network sends a Discon-nection message to the WLAN Access Network via the Visited Mobile Communication Network that the WLAN UE has accessed, and sends an Access Rejection mes-sage to the WLAN Access Network via the Visited Mobile Communication Network newly selected by the WLAN UE; the step of completing disconnection and access be-tween the WLAN UE and the corresponding Visited Mo-bile Communication Networks comprises: the WLAN Ac-cess Network disconnects the connection between the WLAN UE and the Visited Mobile Communication Net-work that the WLAN UE has accessed according to the received Disconnection message and returns the Access Rejection message to the WLAN UE according to the received Access Rejection message. [0028] In above scheme, when the authentication for the WLAN UE from the newly selected Visited Mobile Communication Network implemented by the Home Net-work fails, the step of sending an access instruction com-prises: the Home Network sends an Access Rejection message to the WLAN Access Network via the Visited Mobile Communication Network newly selected by the
WLAN UE; the step of completing disconnection and/or access between the WLAN UE and the corresponding Visited Mobile Communication Networks comprises: the WLAN Access Network returns the Access Rejection
5 message to the WLAN UE according to the received Ac- cess Rejection message. [0029] In above scheme, when the authentication for the WLAN UE from the newly selected Visited Mobile Communication Network implemented by the Home Net-
10 work fails, the step of sending an access instruction com- prises: the Home Network sends an Access Rejection message to the WLAN Access Network via the Visited Mobile Communication Network newly selected by the WLAN UE, and sends a Re-authentication Request to
15 the WLAN Access Network via the Visited Mobile Com- munication Network that the WLAN UE has accessed; the step of completing disconnection and access be-tween the WLAN UE and the corresponding Visited Mo-bile Communication Networks comprises: the WLAN Ac-
20 cess Network returns the Access Rejection message to the WLAN UE according to the received Access Rejec-tion message, and implements a re-authentication pro-cedure to the Re-authentication Request from the Visited Mobile Communication Network that the WLAN UE has
25 accessed. [0030] In above scheme, when the authentication for the WLAN UE from the newly selected Visited Mobile Communication Network implemented by the Home Net-work fails, the step of sending an access instruction corn-
30 prises: the Home Network sends a Re- authentication Request message to the WLAN Access Network via the Visited Mobile Communication Network newly selected by the WLAN UE; the step of completing disconnection and access between the WLAN UE and the correspond-
35 ing Visited Mobile Communication Networks comprises: the WLAN Access Network implements a re-authentica-tion procedure to the Re-authentication Request from the Visited Mobile Communication Network newly selected by the WLAN UE.
40 [0031] In above scheme, when receiving the Access Permission message from the newly selected Visited Mo-bile Communication Network, the step of completing dis-connection and access between the WLAN UE and the corresponding Visited Mobile Communication Networks
45 comprises: the WLAN Access Network informs the Vis-ited Mobile Communication Network newly selected by the WLAN UE to complete resource distribution and pa-rameter configuration, and the WLAN Access Network establishes a connection between the WLAN UE and the
5° newly selected Visited Mobile Communication Network, and sets the state of the connection as non-activation; and after disconnecting the connection between the WLAN UE and the Visited Mobile Communication Net-work that the WLAN UE has accessed, activates the es-
55 tablished connection between the WLAN UE and the newly selected Visited Mobile Communication Network at once. [0032] In above scheme, the Visited Mobile Commu-
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nication Network is a middle operation network connect-ing the WLAN UE and its Home Network, or the Home Network of the WLAN UE. [0033] In above scheme, the step of authenticating the authentication information comprises: an AAA Server of the Home Network implements authentication for the au-thentication request form the Visited Mobile Communi-cation Network newly selected by the WLAN UE. [0034] The interactive method for a WLAN UE re-se-lecting an operation network according to the present invention introduces only a little modification to the AAA Server in the Home Network of current WLAN UE, and enables the AAA Server to cooperate with the existing selection procedure of a WLAN PLM N to accomplish the Visited Mobile Communication Network re-selection by the WLAN UE. [0035] In the technical scheme disclosed by the present invention, the WLAN Access Network can direct-ly implement authentication and access procedure with the new Visited Mobile Communication Network without disconnecting the connection with the former Visited Mo-bile Communication Network, thus the connection time of disconnecting the WLAN UE and external services is shortened or even eliminated, and a smooth re-selection procedure of Visited Communication Network is realized. Moreover, the present invention also provides a WLAN UE establishing multiple connections through different PLMNs, which may not only improve the satisfaction of clients, but also increase the accuracy of charging and subsequently protect the profit of operators. [0036] In addition, the present invention just introduces a few small modifications or adds relatively a little function demand to each network entity, such as the WLAN UE, the WLAN Access Network and the AAA Server, which has little effect on the existing process flow. Therefore, the present invention not only can realize the re-selection function of accessed operation network for WLAN UE but also has very strong practicability. Moreover, the present invention has multiple implementation substi-tutes, thus the implementation of the present invention can be very flexible.
Brief Description of the Drawings
[0037]
Figure 1 is a schematic diagram illustrating a network structure of an inter-working network of a WLAN and a 3GPP system in the case of roaming;
Figure 2 is a schematic diagram illustrating a network structure of an inter-working network of a WLAN and 3GPP system in the case of non-roaming;
Figure 3 is a flow chart illustrating the process of a WLAN UE selecting a Mobile Communication Net-work to access according to an embodiment of the present invention;
Figure 4 is a flow chart illustrating the process of a WLAN UE selecting a Mobile Communication Net-work to access according to another embodiment of the present invention;
5 Figure 5 is a flow chart illustrating the method ac-cording to the present invention;
Figure 6 is a flow chart illustrating the method ac- 10 cording to a specific embodiment of the present in-
vention;
Figure 7 is a schematic diagram illustrating the struc-ture of a network in which a WLAN connected with
15 a plurality of visited networks.
Detailed Description of the Invention
[0038] In order to make the object, the technical 20 scheme and the advantages of the present invention
clearer and more obvious, the present invention will be described in detail hereinafter with reference to embod-iments and accompanying drawings. [0039] The basic idea of the present invention is: a
25 WLAN UE needing to reselect a Visited Mobile Commu- nication Network, initiate an authentication process to the Home Network of the WLAN UE via a WLAN Access Network and the newly selected Visited Mobile Commu-nication Network, which is reselected by the WLAN UE
30 and connected with the present WLAN; and after receiv- ing the authentication request, the Home Network deter-mines whether to disconnect the connection between the WLAN UE initiated request and the former Visited Mobile Communication Network according to the correlative au-
35 thentication information stored in advance, authentica-tion result and the circumstances of whether the current WLAN UE is permitted to have more than one connection simultaneously; and determines whether to set up a con-nection between the WLAN UE initiated request and the
40 new Visited Mobile Communication Network. Thus the access of the WLAN UE to the reselected new Visited Mobile Communication Network is completed. Here, the correlative authentication information stored in advance refers to user subscription information, network access
45 rules set in advance and so on. [0040] In the present invention, the precondition of a WLAN UE implementing network reselection is that the WLAN UE has currently accessed a Visited Mobile Com-munication Network. Here, the Visited Mobile Commu-
50 nication Network currently accessed can be an access network, which is called a middle operation network, con-necting the WLAN UE and its Home Network, such as a VPLMN; it also can be an HPLMN of the current WLAN UE. Wherein, the entity implementing authentication in
55 the Home Network of the WLAN UE can be an AAA Serv- er, more over, in 3GPP-WLAN inter-working network, the entity is a 3GPP AAA Server. [0041] There are several reasons for a WLAN UE re-
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selecting a Visited Communication Operation Network, for example, the charge of the currently accessed Visited Mobile Communication Network is higher than that of an-other Visited Mobile Communication Network, in this case the WLAN UE may desire to switch from the cur-rently accessed Visited Mobile Communication Network to the another Visited Mobile Communication Network. In another case, the currently accessed Visited Mobile Communication Network has some restriction for the WLAN UE to access Internet, and the WLAN UE may desire to switch from the currently accessed Visited Mo-bile Communication Network to another Visited Mobile Communication Network. In still another case, the cur-rently accessed Visited Mobile Communication Network can not provide the interaction ability with certain services in PLMN, but another Visited Mobile Communication Net-work can provide such ability; or in still another case, although the charge of the currently accessed Visited Mobile Communication Network is relatively cheap, while the data transmission rate of it is slow, and highspeed access is needed in practical applications, thus the WLAN UE may need to reselect a more expensive Visited Mobile Communication Network with a higher-speed da-ta rate. For example, the switch mentioned above can be a switch from its HPLMN to a VPLMN, or a switch from VPLMN1 to VPLMN2, or a switch from a VPLMN to the HPLMN. [0042] If the current WLAN UE is permitted to support multiple connections simultaneously, for example, the WLAN UE accesses HPLMN through two different VPLMN, VPLMN1 and VPLMN2 simultaneously, then the WLAN UE can access Internet using VPLMNI with a cheaper charging; while for SMS service that is not supported by VPLMNI, the WLAN UE can adopt VPLMN2 supporting SMS service at the same time. Un-der this circumstance, VPLMN1 and VPLM N2 charge the WLAN UE respectively according to the services imple-mented, and the WLAN UE can select either VPLMN1 or VPLMN2 to access a certain service making use of different NAI identities. Here, the multiple connections supported simultaneously can be connections with HPLMN and VPLMN, or connections with different VPLMNs: VPLMNI, VPLMN2... VPLMNn. [0043] As shown in Figure 5, the process of a WLAN UE reselecting a Mobile Communication Network ac-cording to the present invention comprises the following steps:
Step501: On determining a reselected Visited Mobile Communication Network, the WLAN UE needing to select a new Visited Network initiates an access au-thentication process to the WLAN Access Network, and sends the information of the newly selected Vis-ited Mobile Communication Network to the WLAN Access Network. Wherein, the information of the newly selected Visited Mobile Communication Net-work can be carried in the request message and sent to the WLAN Access Network directly; alternatively,
it can also be sent to the WLAN Access Network through response packet during an EAP procedure between the WLAN Access Network and the WLAN UE.
5 Step 502: On receiving the request of the WLAN UE, the WLAN Access Network initiates an authentica-tion request to the Home Network of the current WLAN UE via the Visited Mobile Communication
10 Network newly selected to access by the WLAN UE.
Step 503: On receiving the authentication request, the Home Network implements an authentication op-eration for the authentication request from the Visited
15 Mobile Communication Network newly selected by the current WLAN UE, and sends an access instruc-tion to the WLAN Access Network through different Visited Mobile Communication Networks, that is, through the accessed Visited Mobile Communica-
20 tion Network and the newly selected Visited Mobile Communication Network.
Step 504: On receiving the access instruction sent from the Home Network of the WLAN UE, the WLAN
25 Access Network completes disconnection and/or ac- cess process between the WLAN UE and the corre-sponding Visited Mobile Communication Network according to the access instruction.
30 [0044] The Visited Mobile Communication Network mentioned in the present invention can be a Mobile Com-munication Network or other Cable Communication Op-eration Networks. Hereinafter, the implementation pro-cedure of the method according to the present invention
35 will be illustrated in more detail taking a Mobile Commu- nication Network as an example, and the implementation procedures of other Communication Networks are basi-cally similar to that of the Mobile Communication Net-work.
40 [0045] The specific implementation procedure of a WLAN UE reselecting a Mobile Communication Network is shown in Figure 6, which comprises the following steps:
Step 601: The WLAN UE needing to reselect a new 45 Access Network determines a newly selected Mobile
Communication Network to access; then the WLAN UE sends an Access Authentication Request to the WLAN Access Network, expressing that the WLAN UE needs to access the new Mobile Communication
50 Network. For example, selecting VPLMN2 while al- ready connecting with VPLMN1 indicates that the WLAN UE desires to access HPLMN via the new VPLMN2, if the newly selected network is HPLMN, it means the WLAN UE desires to access HPLMN
55 directly. Here, the WLAN UE can select to switch from an existing connection to a new connection, and it can also select to support two or a plurality of connections simultaneously according to network
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ability and/or subscription information.
[0046] Wherein, the 3GPP Mobile Communication Network currently accessed by the WLAN UE can be a Visited Network or a Home Network of the WLAN UE.
Step 602: After the WLAN Access Network receives the Access Authentication Request, an access au-thentication procedure is implemented between the WLAN Access Network and the WLAN UE, i.e. an EAP procedure is taken, more specifically: the WLAN Access Network sends a Request UID packet to the WLAN UE; and on receiving the request pack-et, the WLAN UE sends a UID Response packet con-taining the information of the newly selected Mobile Communication Network to the WLAN Access Net-work. In the same way, the information of a Mobile Communication Network can be set in the UID field with the NAI format.
Step 603: Via the Mobile Communication Network newly selected by the current WLAN UE, the WLAN Access Network sends the Access Authentication Request to the Home Network of the current WLAN UE to implement authentication, which specifically comprises: the WLAN Access Network sends the Access Authentication Request to an AAA Agent of the new Mobile Communication Network; and after receiving the request, the AAA Agent sends an au-thentication request to the AAA Server in the Home Network of the WLAN UE, and subsequently the au-thentication procedure is implemented by the AAA Server.
Step604-606: On receiving the authentication re-quest, the Home Network of the WLAN UE deter-mines whether the request is an authentication re-quest from the newly selected Mobile Communica-tion Network according to the information in the re-quest, if the request is an authentication request via the newly selected Mobile Communication Network the Home Network implements an authentication op-eration to the authentication request from the Mobile Communication Network newly selected by the cur-rent WLAN UE, and sends an access instruction to the WLAN Access network through different Mobile Communication Networks, i.e. through the accessed Mobile Communication Network and the newly se-lected Mobile Communication Network; and after re-ceiving the Home Network access instruction from the current WLAN UE, the WLAN Access Network completes a disconnection and an access operation between the WLAN UE and corresponding Mobile Communication Networks.
[0047] The information in the request in Step 604 refers to address information of a VPLMN or a VPLMN ID or other. For example: since the Home Network stores all
the information of the currently accessed Mobile Com-munication Network, the Home Network can judge whether the source address in the request is the same as the address of the currently accessed Mobile Com-
5 munication Network. And if the two addresses are not the same, it means that the request is an authentication request from a newly selected Mobile Communication Network. [0048] In fact, an alternative case in Step 604 is that
10 the Home Network does not need to judge whether the request is an authentication request from the newly se-lected Mobile Communication Network, and it imple-ments authentication to the received authentication re-quest directly.
15 [0049] In Step 604, before implementing the authenti- cation, the Home Network can first judge whether the current WLAN UE is permitted to access multiple con-nections simultaneously. Wherein, the judgment is based on the data configured in advance by the operators or
20 the data of the user subscription information. The data configured may include that whether the network permits the WLAN UE to have multiple connections, whether the network permits users with certain characteristics to have multiple connections or whether the network forbids us-
25 ers with other certain characteristics to have multiple con- nections; in addition, whether multiple connections to cer-tain VPLMNs are forbidden, if so, a list of VPLMNs under these circumstances is needed. If the judgment is imple-mented according to each user, the corresponding pa-
30 rameters are needed in the user subscription information, which may include whether the user permits multiple con-nection accesses from different VPLMNs, whether the permitted multiple connections comprise HPLMN, and the maximum number of the permitted simultaneous con-
35 nections and so on. [0050] If the current WLAN UE is permitted to access only one VPLMN connection simultaneously, the process done to the newly selected network in Step 605 and 604 can actually be divided into two cases:
40
In one case, the Home Network sends a Disconnec-tion message to the former Mobile Communication Network and disconnects the former connection be-tween the former Mobile Communication Network
45 and the current WLAN UE, then implements authen- tication to the authentication request from the new Mobile Communication Network. In this case, the WLAN Access Network determines whether to ac-cess the new Mobile Communication Network ac-
50 cording to the authentication result. And next com- pletes subsequent operations, and then completes the current flow of reselecting a network. That is, if the authentication fails, an Access Failure message will be returned to the WLAN UE, which may contain
55 failure reasons; if the authentication succeeds, the WLAN Access Network will set up a normal connec-tion between the WLAN UE and the new Mobile Communication Network, establishes a correspond-
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ing charging relationship between the WLAN Access Network and the new Mobile Communication Net-work, and thus completes the procedure of the WLAN UE reselecting a Mobile Communication Net-work.
In the other case, the Home Network implements authentication to the authentication request from the new Mobile Communication Network directly, and determines the Mobile Communication Network to be finally accessed by the current WLAN UE accord-ing to the authentication result and corresponding authentication information, and then the Home Net-work sends an authentication result to the WLAN Access Network; the WLAN Access Network com-pletes the subsequent disconnection and/or access operations according to the received signaling indi-cations. In this case, the subsequent operations of the WLAN Access Network can be further divided into three cases:
a) The authentication implemented by the Home Network to the authentication request from the new Mobile Communication Network fails. In this case, the Home Network should differenti-ate whether the failure is a failure of an authen-tication to the current WLAN UE, which can be judged with respect to the failure reasons. If the failure is a failure of an authentication to the cur-rent WLAN UE, the Home Network may reject to set up a connection between the WLAN UE and the new Mobile Communication Network, and at the same time may disconnect the con-nection between the WLAN UE and the former Mobile Communication Network. Alternatively, the Home Network can also only reject to set up a connection between the WLAN UE and the new Mobile Communication Network; in view of another substitute, the Home Network can also reject to set up a connection between the WLAN UE and the new Mobile Communication Net-work and at the same time request the former Mobile Communication Network to implement authentication to the current WLAN UE once again. Otherwise, the Home Network can only reject to set up a connection between the WLAN UE and the new Mobile Communication Network, and keep the connection between the WLAN UE and the former Mobile Communication Network. Al-ternatively, the Home Network can also imple-ment authentication to the authentication re-quest from the new Mobile Communication Net-work once again.
b) The Home Network judges whether the au-thentication request via the new Mobile Com-munication Network is permitted to pass accord-
ing to the network access rules or user subscrip-tion information set in advance, and if it is not permitted, the Home Network sends an authen-tication failure message to the new Mobile Com-
5 munication Network, and keeps the connection between the WLAN UE and the former Mobile Communication Network. For example, the net-work access rule set in advance includes that accessing another Mobile Communication Net-
10 work simultaneously after accessing one Mobile Communication Network is not permitted, and then the authentication request via the new Mo-bile Communication Network will not be permit-ted to pass. For another example, the user sub-
15 scription information indicates that accessing more than one Access Network simultaneously is not permitted, and then the authentication re-quest from the new Mobile Communication Net-work will not be permitted to pass. That is, the
20 Home Network can forbid the WLAN UE to ac- cess two Mobile Communication Networks si-multaneously according to the practical situation of the WLAN UE.
25 c) The authentication to the WLAN UE suc- ceeds. In this case, the Home Network sends an Access Permission message to the new Mo-bile Communication Network, and then sends a Disconnection message to the former Mobile
30 Communication Network. Specifically, the Home Network can send the Access Permission message first and then send the Disconnection message. Alternatively, it can also send the Ac-cess Permission message and the Disconnec-
35 tion message at the same time. Or, the Home Network can only send the Access Permission message to the new Mobile Communication Network.
40 [0051] According to the above Case c, accordingly, the process of the WLAN Access Network also comprises three cases:
c1) If the WLAN Access Network receives the Ac- 45 cess Permission message from the new Mobile
Communication Network first, the WLAN Access Network collects charging information and sends the charging information to the former Mobile Commu-nication Network, and then disconnects the network
50 connection between the current WLAN UE and the former Mobile Communication Network; at the same time, the WLAN Access Network sets up a normal network connection between the current WLAN UE and the new Mobile Communication Network, and
55 establishes a corresponding charging relationship with the new Mobile Communication Network, and the subsequent charging information should be sent to the new Mobile Communication Network and thus,
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the network reselecting operation of the WLAN UE is completed.
c2) If the WLAN Access Network receives the Dis-connection message from the former Mobile Com-munication Network, the WLAN Access Network can collect the charging information and send the charg-ing information to the former Mobile Communication Network directly, then disconnects the current WLAN UE and the former Mobile Communication Network, and next waits for the authentication result from the new Mobile Communication Network. After receiving the authentication result, the WLAN Ac-cess Network sets up a normal network connection between the current WLAN UE and the new Mobile Communication Network and establishes a corre-sponding charging relationship with the new Mobile Communication Network, thus the subsequent charging information is to be sent to the new Mobile Communication Network and then the network rese-lecting operation of the WLAN UE is completed. The WLAN Access Network can also wait for authen-tication result from the new Mobile Communication Network first; and after receiving the authentication result, the WLAN Access Network collects the charg-ing information and sends it to the former Mobile Communication Network, and then disconnects the network connection between the current WLAN UE and the former Mobile Communication Network, At the same time, the WLAN Access Network sets up a normal network connection and a corresponding charging relationship for the current WLAN UE and the new Mobile Communication Network, thus the subsequent charging information is to be sent to the new Mobile Communication Network and then com-pletes the network reselecting operation of the WLAN UE.
c3) If the WLAN Access Network receives the Dis-connection signaling generated due to authentica-tion failure, the WLAN Access Network first collects the charging information and sends it to the former Mobile Communication Network, then disconnects the network connection between the current WLAN UE and the former Mobile Communication Network, and then waits for authentication result from the new Mobile Communication Network; if the Access Per-mission message is received, the corresponding op-erations will be implemented according to Case c1; and if the authentication result is not received, tries to implement the authentication process once again.
[0052] If the current WLAN UE is permitted to access multiple VPLMN connections simultaneously, for exam-ple, the current WLAN UE sets up a connection of WLAN-VPLMNI-HPLMN, and at the same time, it also sets up a connection of WLAN-VPLMN2-PLMN. Here, the Home Network or the WLAN Access Network of the current
WLAN UE will determine whether to disconnect the ex-isting connection according to the user subscription in-formation, network setting or user selection. If it deter-mines not to disconnect the existing connection, on one
5 hand, the AAA will judge whether the connection is within the range of the multiple connections, and if so, the AAA will implement normal authentication and access authen-tication operations for the new connection and indicate WLAN to access the WLAN UE after the authentication
10 is successful. On the other hand, it also needs to imple- ment an operation of affirming the existing connection is continued to be used. This operation can be completed in more than one ways, for example, a) implements a re-authentication to the WLAN UE through the Mobile Com-munication Network that the current WLAN UE has ac-cessed; b) indicates the current WLAN UE that there are multiple connections exist in itself, here the indication can be sent through established connections, the new established connection or any other connections be-
20 tween the network and the WLAN UE, and the total number of the current connections and/or specific con-nection selection such as a list of selected and accessed VPLMN and so on can be indicated in the indication in-formation; c) does nothing.
25 [0053] If a threshold of the number of multiple connec- tions is set in advance and after the new connection to be established by the WLAN UE is established, the number of connections exceeds the threshold of the max-imum number of multiple connections, the request of the
30 new connection will be rejected; or the user will be prompted to select a connection to be removed, i.e. select a connection to be removed among the current estab-lished connections. Here, the network can disconnect the corresponding accessed Visited Mobile Communica-
35 tion Network or reject the newly selected Visited Mobile Communication Network according to user's response, and the network also can appoint a connection to be re-moved and let the user affirm. [0054] In the above schemes, the step of disconnect-
40 ing the connection between the Mobile Communication Network and the WLAN UE further comprises: discon-necting the service connection, settling accounts of charging information and so on, the specific process is exactly the same as the existing procedure of discon-
45 necting connection between the WLAN UE and the Mo-bile Communication Network connected with the WLAN UE. [0055] In the above schemes, after receiving the Ac-cess Permission message from the new Mobile Commu-
50 nication Network, the WLAN Access Network can first do each preparative operation of the WLAN UE and the new Mobile Communication Network, such as the new Mobile Communication Network completing resource distribu-tion, parameters configuration and so on, and the set up
55 a connection between the WLAN UE and the new Mobile Communication Network, whose connection state is set as non-activation. After disconnecting the connection be-tween the WLAN UE and the accessed Mobile Commu-
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nication Network, the established connection between the WLAN UE and the new Mobile Communication Net-work is to be activated at once, thus the time of discon-necting the user service connection can be reduced. [0056] Figure 7 shows a circumstance of a certain WLAN Access Network connecting three VPLMNs simul-taneously. Suppose a WLAN UE has accessed VPLMN1 through the WLAN Access Network, and now the WLAN UE wants to switch from VPLMN1 to VPLMN2. Wherein, VPLMNI corresponds to a former 3GPP AAA Agent and VPLMN2 corresponds to a new 3GPP AAA Agent. Now, the process of the WLAN UE reselecting a Mobile Com-munication Network to access will be illustrated in more detail hereinafter with reference to several embodiments and Figure 7.
Embodiment 1:
[0057] In this embodiment, after receiving the authen-tication request from VPLMN2, the Home Network im-plements an authentication operation directly; more over, after the authentication succeeds, the Home Networkfirst sends an Access Permission message to VPLMN2 and then sends a Disconnection message to VPLMNI. Ac-cordingly, the WLAN Access Network will receive the Ac-cess Permission message first. In addition, in the present embodiment, the current WLAN UE is permitted to ac-cess only one connection simultaneously; in this case, the process of the WLAN UE reselecting a Mobile Com-munication Network comprises the following steps:
Step 11: The current WLAN UE determines that it needs to access VPLMN2, and affirms the domain name or identity of VPLMN2.
Step 12: the WLAN UE sends an access authenti-cation request to the WLAN Access Network without affecting the existing connection with VPLMN1, i.e. the WLAN UE sends an Authentication Start Packet EAPoL-Start to the WLAN Access Network.
Step 13-14: On receiving the access authentication request, the WLAN Access Network initiates an ac-cess authentication procedure, i.e. an EAP proce-dure, between the WLAN Access Network and the WLAN UE. Specifically, the WLAN Access Network sends a User Identity Packet EAPoL-Request [Iden-tity] to the WLAN UE to request the user name of the current WLAN UE; after receiving the request pack-et, the WLAN UE returns a User Identity Response Packet EAPoL-Response [Identity] to the WLAN Ac-cess Network, which carries a user identity field with NAI format. Wherein, the user identity field carries network selection information; the packet can also carry identity information to identify this information is for network reselection.
Step 15: The WLAN Access Network confirms that
the current WLAN UE select to access VPLMN2 ac-cording to an address information or identity infor-mation of VPLMN2 in the request, and VPLMN2 con-nects with the present WLAN, then the WLAN Ac-
5 cess Network forwards the access authentication re- quest from the WLAN UE to VPLMN2 and then the access authentication request is forwarded to the Home Network of the WLAN UE, and next the au-thentication procedure is implemented by the Home
10 Network, specifically, all the authentication opera- tions are completed by an AAA Server in the Home Network.
Step 16: After the Home Network of the current 15 WLAN UE receives the authentication request, since
the current WLAN UE connects with VPLMN1, the corresponding connection information exists in the Home Network, the Home Network judges and con-firms that the authentication request from VPLMN2
20 is an authentication request from a newly selected Mobile Operation Network according to the existing information or Mobile Communication Network iden-tity carried in the authentication request, and then the Home Network implements authentication for the
25 authentication request from VPLMN2 directly. In this step, the Home Network also needs to judge whether the current WLAN UE is permitted to access multiple VPLMNs simultaneously, if so, the Home Network can disconnect or keep the former connec-
30 tion in the subsequent steps; otherwise, the former connection will be disconnected. In the present em-bodiment, the current WLAN UE is not permitted to access multiple VPLMNs, so VPLMNI and the WLAN UE will be disconnected in subsequent steps.
35
Step 17: If the authentication to the WLAN UE fails, an Access Rejection message will be sent to VPLMN2; or alternatively a re-authentication mes-sage will be sent to VPLMN1 and an Access Rejec-
40 tion message will be sent to VPLMN2 by the Home Network. After receiving the Access Rejection mes-sage from VPLMN2, the WLAN network informs the WLAN UE initiating the current request that the au-thentication fails, and then completes the current
45 process of network reselection. Wherein, the Access Rejection message carries reasons of rejection, for example, a rejection reason value. If the Home Network confirms to reject the authen-tication request of the current WLAN UE since it is
50 from VPLMN2 according to the network access rules or user subscription information set in advance, for example, access rules of accessing more than one Mobile Communication Network by the WLAN UE simultaneously being not permitted, or accessing
55 VPLMN2 by the WLAN UE being not permitted and soon, the Home Network sends an Access Rejection message to VPLMN2, and the connection between the Home Network and VPLMN1 will not be affected.
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After receiving the Access Rejection message from VPLMN2, the WLAN Access Network informs the WLAN UE that the authentication of reselecting Mo-bile Communication Network fails, and then com-
tication request from VPLMN2, the Home Network im-plements authentication operation directly and the au-thentication succeeds; more over, after the authentica-tion succeeds, the Home Network sends an Access Per-
pletes the current process of network reselection. 5 mission message to VPLMN2 and at the same time sends If the authentication to the WLAN UE by the Home a Disconnection message to VPLMNI; and then the Network succeeds, proceeds to Step 18. In the WLAN Access Network receives the Disconnection mes- present embodiment, suppose that the authentica- sage first. In the present embodiment, the current WLAN tion for the WLAN UE by the Home Network suc- UE is permitted to access only one connection or the ceeds. 10 WLAN UE indicates to switch from an existing connection
to a new connection. In this case, the procedure of the Step 18: The Home Network sends an Access Per- WLAN UE reselecting a Mobile Communication Network mission message to VPLMN2, and since according in the present embodiment is basically the same as that to the network access rules or user subscription in- in Embodiment 1, while Step 38 and 39 are different from formation, the WLAN UE is permitted to access only one connection simultaneously, the Home Network sends a Disconnection message to VPLMN1 later.
15 Step 18 and 19 of Embodiment 1.
Step 31-37: These steps are exactly the same as that of Step 11-17 according to Embodiment 1.
Step 19: After receiving the Access Permission mes-sage from VPLMN2 first, the WLAN Access Network 20 Step 38: The Home Network sends an Access Per- collects charging information and then sends it to mission message to VPLMN2 and at the same time VPLMNI, and next disconnects the connection be-tween the current WLAN UE and VPLMNI; and at the same time, the WLAN Access Network sets up
sends a Disconnection message to VPLMNI.
Step 39: After first receiving the Disconnection mes- a normal network connection between the WLAN UE 25 sage from VPLMNI, the WLAN Access Network and VPLMN2, and establishes corresponding charg- waits for the Access Permission message from ing relationship with VPLMN2 and thus the subse- VPLMN2, and after receiving the Access Permission quent charging information will be sent to VPLMN2, and the process of operation network reselection of
message, the WLAN Access Network collects charg-ing information and sends it to VPLMN1, and then
the WLAN UE is completed. 30 disconnects the connection between the current WLAN UE and VPLMNI; next, the WLAN Access
Embodiment 2: Network sets up a normal network connection for the WLAN UE and VPLMN 2, and establishes a corre-
[0058] In this embodiment, after receiving the authen- sponding charging relationship with VPLMN2 and tication request from VPLMN2, the Home Network im- 35 thus the subsequent charging information will be plements authentication operation directly; and after the sent to VPLMN2, and the process of operation net- authentication succeeds, the Home Network sends an work reselection of the WLAN UE is completed. Access Permission message to VPLMN2 and at the same time sends a Disconnection message to VPLMN1; Embodiment 4: and then, the WLAN Access Network receives the Ac- 40
cess Permission message first. In the present embodi- [0060] In this embodiment, after receiving the authen- ment, the current WLAN UE is permitted to access only tication request from VPLMN2, the Home Network im- one connection or the WLAN UE indicates to switch from plements authentication operation directly and the au- an existing connection to a new connection. In this case thentication succeeds; more over, after and the authen- the procedure of the WLAN UE reselecting a Mobile Com- 45 tication succeeds, the Home Network sends an Access munication Network according to the present embodi- Permission message to VPLMN2 and at the same time ment is basically the same as that of Embodiment 1, but sends a Disconnection message to VPLMNI; the WLAN Step 28 is different from Step 18 of Embodiment 1. Access Network receives the Disconnection message
generated due to authentication failure. In the present Step 21-27: These steps are exactly the same as 50 embodiment, the current WLAN UE is permitted to ac- that of Step 11-17 according to Embodiment 1. cess only one connection or the WLAN UE indicates to Step 28: The Home Network sends an Access Per- switch from an existing connection to a new connection. mission message to VPLMN2 and at the same time In this case, the procedure of the WLAN UE reselecting sends a Disconnection message to VPLMNI. a Mobile Communication Network in the present embod-
Embodiment 3:
55 invent is basically the same as that in Embodiment 1, while Step 48 and 49 are different from Step 18 and 19 of Embodiment 1.
[0059] In this embodiment, after receiving the authen-
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Step 41-47: These steps are exactly the same as that of Step 11-17 according to Embodiment 1.
Step 48: The Home Network sends an Access Per-
and VPLMNI, but does not disconnect the wireless connection between the current WLAN UE and VPLMN1; and then implements authentication to the authentication request from VPLMN2.
mission message to VPLMN2 and at the same time 5 sends a Disconnection message to VPLMN1. Step 58: After receiving the authentication result
from VPLMN2, the WLAN Access Network judges Step 49: After the WLAN Access Network receiving whether the authentication is successful, if the au- the Disconnection message from VPLMN1, and the thentication is successful, the WLAN Access Net- reason value carried in the message indicates that 10 work establishes a signaling relationship, a charging one Mobile Communication Network needs to be dis- relationship and an authentication relationship be- connected because of repeated connection, then the tween the current WLAN UE and VPLMN2, and sets WLAN Access Network collects charging informa- up a service connection between the current WLAN tion first and sends it to VPLMNI, next, disconnects UE and VPLMN2, completing the network reselec- the connection between the current WLAN UE and 15 tion process. Otherwise, the WLAN Access Network VPLMN1, and then waits for the authentication result informs the current WLAN UE that the authentication from VPLMN2; after receiving the Access Permis- is a failure and the authentication failure message sion message from VPLM N2, the WLAN Access Net-work sets up a normal network connection for the
may carry the failure reason value.
WLAN UE and VPLMN2, and then establishes a cor- 20 Embodiment 6: responding charging relationship with VPLMN2 and thus the subsequent charging information will be [0062] In this embodiment, the current WLAN UE is sent to VPLMN2, and the process of operation net- permitted to access multiple VPLMNs according to its work reselection of the WLAN UE is completed. user subscription information, and VPLMN2 selected by Here, if the authentication result from VPLMN2 is not 25 the WLAN UE is the second VPLMN the WLAN UE wants received, the WLAN Access Network may try to im- to access. After receiving the authentication request from plement authentication once again, and times of try- VPLMN2, the Home Network implements authentication ing or a period of time for trying over again can be directly and the authentication succeeds. And after the set in advance, if the times of trying or the period of authentication succeeds, the Home Network confirms time for trying set in advance is reached, the authen- 30 that the current WLAN UE is permitted to implement mul- tication fails. tiple-connection access by judgment, and then the Home
Network sends an Access Permission message to Embodiment 5: VPLMN2; after that the WLAN Access Network activates
the connection from the WLAN UE to VPLMN2 and dis- [0061] In the present embodiment, after receiving the 35 tributes the data of the WLAN UE to VPLMNI orVPLMN2 authentication requestfrom VPLMN2, the Home Network according to different IP address or NAI used by the sends a Disconnection message to VPLMN1 first, and WLAN UE. The WLAN UE sends corresponding service then implements authentication for the authentication re- data to different VPLMNs according to the selection of quest from VPLMN2. In this embodiment, the current the user or the user application program. Thus the pro- WLAN UE is permitted to access only one connection 40 cedure of the WLAN UE reselecting Mobile Communica- simultaneously or the WLAN UE indicates to switch from tion Network according to the present embodiment is ba- an existing connection to a new connection. In this case, the procedure of the WLAN UE reselecting a Mobile Com-
sically the same as that in Embodiment 1, except that Step 68 and 69 are different from Step 18 and 19 of Em-
munication Network comprises the following steps: bodiment 1. 45
Step 51-56: These steps are exactly the same as Step 61-67: These steps are exactly the same as that of Step 11-16 according to Embodiment 1. that of Step 11-17 according to Embodiment 1.
Step 57: The Home Network sends a Disconnection Step 68: Since the current WLAN UE is permitted to message to VPLMN1 requesting to disconnect the 50 access multiple connections simultaneously, at the connection between VPLMN1 and the current WLAN time the Home Network sends an Access Permission UE; after receiving the Disconnection message sent message to VPLMN2, it does not need to send a from the Home Network and through VPLNM1, the Disconnection message to VPLMN1. WLAN Access Network disconnects with VPLMNI, which specifically comprises: collects charging infor- 55 Step 69: After receiving the Access Permission mes- mation and then sends it to VPLMNI, disconnects sage from VPLM N2, the WLAN Access Network sets the network connection, signaling connection and up a normal network connection for the WLAN UE service connection between the current WLAN UE and VPLMN2 and establishes a corresponding
14
NSN677-1002, Page 373
27
EP 1 713 207 Al 28
charging relationship with VPLMN2, thus the subse-quent charging information will be sent to VPLMNI or VPLMN2 according to user identity information, here, the user identity information includes NAI, IP address and so on. For example, if the user data use an IP address belonging to VPLMNI, the corre-sponding charging information will be sent to VPLMNI; if the identity of user data is of VPLMN2, the corresponding charging information will be sent to VPLMN2, and the process of the WLAN UE sup-porting multiple VPLMN networks is completed. Here, if the authentication result from VPLMN2 is not received, the WLAN Access Network may try to im-plement authentication once again, and times of try-ing or a period of time for trying can be set in advance. If the times of trying or the period of time for trying set in advance is reached, the authentication fails.
Embodiment 7:
[0063] In this embodiment, the current WLAN UE is permitted to access multiple VPLMNs according to the user subscription information and a threshold of the max-imum connection number simultaneously is set in ad-vance, VPLMNn selected by the WLAN UE is the nth VPLMN the WLAN UE wants to access, and n exceeds the threshold of the maximum connection number simul-taneously of the WLAN UE set in advance, after receiving the authentication request from VPLMNn, the Home Net-work can reject directly and explains in the rejection rea-son that the reason of rejection is access limit, and certain existing connections need to be removed by the WLAN UE; the Home Network can also directly accept the au-thentication request currently received and indicates the WLAN UE to select a connections to be removed after the authentication succeeds.
Step 71-77: These steps are exactly the same as that of Step 11-17 according to Embodiment 1.
Step 78: The Home Network judges whether the nth
connection exceeds the threshold of the maximum connection number simultaneously of the WLAN UE, if dose not exceed, proceeds to the steps described in Step 68 and 69 of Embodiment 6; otherwise, the Home Network selects to reject or accept the request and implement authentication according to user sub-scription information or network configuration, and then indicates the WLAN UE to remove a certain existing connection.
Embodiment 8:
[0064] In the present embodiment, the current WLAN UE is permitted to access multiple VPLMNs simultane-ously according to the user subscription information, but the WLAN UE expects to switch from a certain existing connection to anther new connection. In this case, the
existing connection can be deleted first, and then a new connection is established, as described in Embodiment 4; alternatively, a new connection can be tried to set up first, an if the new connection is set up successfully, the
5 former connection deleted then, as described in Embod- iment 1,2 and 3; and in view of another substitute, while the new connection is set up, indicates the network in signaling the former connection to be deleted. [0065] What are mentioned above are just some rela-
10 tively preferred embodiments of the present invention, which are not intended to limit the protection range of the invention.
15 Claims
1. An interactive method for a Wireless Local Area Net-work (WLAN) User equipment (UE) accessing a new communication network, comprising:
20
when the WLAN UE accessing a first Visited Mo-bile Communication Network needs access a second Visited Mobile Communication Network, the WLAN UE sending authentication informs-
25 tion to a Home Network where the WLAN UE locates via a WLAN Access Network and the second Visited Mobile Communication Network; upon receiving the authentication information, the Home Network authenticating the WLAN UE
30 according to the authentication information and sending an access instruction to the WLAN Ac-cess Network via the second Visited Mobile Communication Network; and completing disconnection and/or access be-
35 tween the WLAN UE and the corresponding Vis- ited Mobile Communication Networks.
2. The method according to claim 1, wherein, before the Home Network authenticates the WLAN UE, fur-
40 ther comprising: the Home Network of the WLAN UE sending a Disconnection message to the Visited Mo-bile Communication Network that the WLAN UE has accessed, and disconnecting the connection be-tween the WLAN UE and the Visited Mobile Com-
45 munication Network that the WLAN UE has ac- cessed; the step of sending the access instruction comprises: the Home Network sending an Access Permission message or an Access Rejection message to the
50 WLAN Access Network via the Visited Mobile Com- munication Network newly selected by the WLAN UE; and the step of completing disconnection and/or access between the WLAN UE and the corresponding Vis-
55 ited Mobile Communication Networks comprises: the WLAN Access Network judging whether the Ac-cess Permission message is received, if so, estab-lishing a connection between the WLAN UE and the
15
NSN677-1002, Page 374
29 EP 1 713 207 Al
30
Visited Mobile Communication Network newly se-lected by the WLAN UE, and completes the access of the WLAN UE to the Visited Mobile Communica-tion Network newly selected by the WLAN UE; oth-erwise, forwarding the Access Rejection message to the WLAN UE.
3. The method according to claim 2, wherein, before the Home Network authenticates the WLAN UE, fur-ther comprising: judging whether the WLAN UE is permitted to access more than one Visited Mobile Communication Networks simultaneously, if so, the Home Network of the WLAN UE determining wheth-er to send a Disconnection message to the Visited Mobile Communication Network that the WLAN UE has accessed; otherwise, the Home Network of the WLAN UE sending a Disconnection message to the Visited Mobile Communication Network that the WLAN UE has accessed, and disconnecting the con-nection between the WLAN UE and the Visited Mo-bile Communication Network that the WLAN UE has accessed.
4. The method according to claim 1, wherein, before the Home Network authenticates the WLAN UE, fur-ther comprising: the Home Network judging whether to permit the authentication for the authentication re-quest from the Visited Mobile Communication Net-work newly selected by the WLAN UE, and if permit-ted, continuing with the authentication operation for the authentication request from the Visited Mobile Communication Network newly selected by the WLAN UE; if not permitted, the step of sending an access in-struction comprises:
the Home Network sending an Access Rejection message to the WLAN Access Network via the Visited Mobile Communication Network newly selected by the WLAN UE; and the step of completing disconnection and/or ac-cess between the WLAN UE and the corre-sponding Visited Mobile Communication Net-works comprises: the WLAN Access Network forwarding the Access Rejection message to the WLAN UE.
5. The method according to claim 4, wherein, the step ofjudging further comprising: judging whether to per-mit the WLAN UE to access more than one Visited Mobile Communication Network simultaneously, if permitted, judging whether to permit to authenticate the authentication request from the second Visited Mobile Communication Network; and if not permit to authenticate the authentication request, the authen-tication to the authentication request from the second Visited Mobile Communication Network is consid-ered not to be permitted.
6. The method according to claim 2 or 4, wherein, the Access Rejection message further carries a piece of information indicating the reason of rejection.
5 7. The method according to claim 1, wherein, after the authentication to the WLAN UE succeeds, the step of sending an access instruction comprises: the Home Network sending an Access Permission mes-sage to the WLAN Access Network via the Visited
10 Mobile Communication Network newly selected by the WLAN UE; the step of completing disconnection and/or access between the WLAN UE and the corresponding Vis-ited Mobile Communication Network comprises: ac-
15 cording to the received Access Permission mes- sage, the WLAN Access Network establishes a con-nection between the WLAN UE and the Visited Mo-bile Communication Network newly selected by the WLAN UE, and completes the access of the WLAN
20 UE and the Visited Mobile Communication Network newly selected by the WLAN UE.
8. The method according to claim 7, wherein, while sending the Access Permission message to the Vis-
25 ited Mobile Communication Network newly selected by the WLAN UE, the Home Network sends a Dis-connection message to the WLAN Access Network via the Visited Mobile Communication Network that the WLAN UE has accessed;
30 the step of completing disconnection and/or access between the WLAN UE and the corresponding Vis-ited Mobile Communication Networks further com-prising: disconnecting the connection between the WLAN UE and the Visited Mobile Communication
35 Network that the WLAN UE has accessed.
9. The method according to claim 7, wherein, before sending the Disconnection message to the WLAN Access Network via the Visited Mobile Communica-
40 tion Network that the WLAN UE has accessed further comprising: judging whether to permit the WLAN UE access more than one Visited Mobile Communica-tion Network simultaneously, if so, the Home Net-work of the WLAN UE determining whether a Dis-
45 connection message be sent to the Visited Mobile Communication Network that the WLAN UE has ac-cessed according to the selection of the users; oth-erwise, the Home Network sending the Disconnec-tion message to the WLAN Access Network via the
50 Visited Mobile Communication Network that the WLAN UE has accessed.
10. The method according to claim 7, wherein, the meth-od further comprising: implementing re-authentica-
55 tion for the WLAN UE via the Visited Mobile Com- munication Network that the WLAN UE has ac-cessed; and/or sending advertisement information to inform the WLAN UE that more than one connec-
16
NSN677-1002, Page 375
31
EP 1 713 207 Al 32
tion existing in the WLAN UE; or doing nothing.
11. The method according to claim 1, wherein, after the authentication to the WLAN UE succeeds, the step
whether the number of the current simultaneous con-nections exceeds the threshold of the maximum number of the simultaneous connections, if not, con-tinuing with subsequent operations; otherwise, re-
of sending an access instruction comprises: the 5 jecting the authentication request of the current con- Home Network sending an Access Permission mes- nection directly, or performing the authentication re- sage to the WLAN Access Network via the Visited quest of current connection and informing the current Mobile Communication Network newly selected by WLAN UE to disconnect one or more than one ex- the WLAN UE; isting connection. the step of completing disconnection and/or access 10
between the WLAN UE and the corresponding Vis- 15. The method according to claim 14, wherein, the ited Mobile Communication Networks comprises: af- method further comprising: after informing the ter receiving the Access Permission message, the WLAN UE to disconnect one or more than one con- WLAN Access Network establishing a connection nection, the network disconnecting a corresponding between the WLAN UE and the Visited Mobile Com- 15 accessed Visited Mobile Communication Network or munication Network newly selected by the WLAN rejecting the Visited Mobile Communication Network UE, completes the access of the WLAN UE and the newly selected by the WLAN UE according to the Visited Mobile Communication Network newly se-lected by the WLAN UE, and disconnecting the con-nection between the WLAN UE and the Visited Mo-bile Communication Network that the WLAN UE has accessed.
20
correlative selection information.
16. The method according to claim of 7, 8 or 9, wherein, when the authentication to the WLAN UE succeeds, the step of ompleting disconnection and access be-tween the WLAN UE and the corresponding Visited
12. The method according to claim 11, wherein, after the Mobile Communication Networks comprises: WLAN Access Network completing the accessing 25
the WLAN UE and the Visited Mobile Communica- c1. the WLAN Access Network judging whether tion Network newly selected by the WLAN UE, fur-ther comprising: judging whether the WLAN UE is
the Access Permission message from the Visit-ed Mobile Communication Network newly se-
permitted to access to more than one Visited Mobile Communication Network simultaneously, and if so, the WLAN Access Network determining whether to
30
lected by the WLAN UE is received first, if so, proceeding to Step c2; if the Disconnection mes-sage is received first, proceeding to Step c3;
send the Disconnection message to the Visited Mo- c2. collecting and sending charging information bile Communication Network that the WLAN UE has to the Visited Mobile Communication Network accessed; otherwise, disconnecting the connection that the WLAN UE has accessed, and discon- between the WLAN UE and the Visited Mobile Com- 35 necting the connection between the WLAN UE munication Network that the WLAN UE has ac- and the Visited Mobile Communication Network cessed. that the WLAN UE has accessed; and establish-
ing a connection between the WLAN UE and the 13. The method according to claim 3, 9 or 12, wherein,
when the WLAN UE is permitted to access more than 40
Visited Mobile Communication Network newly selected by the WLAN UE, and completes the
one Visited Mobile Communication Network simul- access of the WLAN UE and the Visited Mobile taneously, and the Home Network of the WLAN UE Communication Network newly selected by the determining not to send a Disconnection message WLAN UE and then completes the current re- to the Visited Mobile Communication Network that selection process; the WLAN UE has accessed, the method further 45 c3. collecting and sending charging information comprising: re-authenticating the WLAN UE via the to the Visited Mobile Communication Network Visited Mobile Communication Network that the that the WLAN UE has accessed, and discon- WLAN UE has accessed; and/or sending a piece of necting the connection between the WLAN UE advertisement information to inform the WLAN UE and the Visited Mobile Communication Network that more than one connection exists; or doing noth- 50 that the WLAN UE has accessed, waiting for the ing. Access Permission message from the Visited
Mobile Communication Network newly selected 14. The method according to claim 3, 5, 9 or 12, wherein,
a threshold of the maximum number of the permitted by the WLAN UE; and after receiving the Access Permission message, establishing a connection
simultaneous connections of the WLAN UE is preset; 55 between the WLAN UE and the Visited Mobile if the WLAN UE is permitted to access more than Communication Network newly selected by the one Visited Mobile Communication Networks simul- WLAN UE, and completes the access of the taneously, the method further comprising: judging WLAN UE and the Visited Mobile Communica-
17
NSN677-1002, Page 376
33
EP 1 713 207 Al 34
tion Network newly selected by the WLAN UE.
17. The method according to claim 16, wherein, the method further comprising before Step c3: judging whether the received Disconnection message is generated due to a successful authentication, if so, waiting for the Access Permission message from the Visited Mobile Communication Network newly se-lected by the WLAN UE, and after receiving the Ac-cess Permission message, collecting and sending charging information to the Visited Mobile Commu-nication Network that the WLAN UE has accessed, and disconnecting the connection between the WLAN UE and the Visited Mobile Communication Network that the WLAN UE has accessed; and es-tablishing a connection between the WLAN UE and the Visited Mobile Communication Network newly selected by the WLAN UE, and completing the ac-cess of the WLAN UE and the Visited Mobile Com-munication Network newly selected by the WLAN UE; otherwise, continuing with Step c3.
18. The method according to claim 1, 7, 8, 9, 11 or 12, wherein, when the authentication to the WLAN UE fails, the step of sending the access instruction com-prises:
the Home Network sending a Disconnection message to the WLAN Access Network via the Visited Mobile Communication Network that the WLAN UE has accessed, and sends an Access Rejection message to the WLAN Access Net-work via the Visited Mobile Communication Net-work newly selected by the WLAN UE; the step of completing disconnection and/or ac-cess between the WLAN UE and the corre-sponding Visited Mobile Communication Net-works comprises: the WLAN Access Network disconnecting the connection between the WLAN UE and the Visited Mobile Communica-tion Network that the WLAN UE has accessed according to the received Disconnection mes-sage and forwarding the Access Rejection mes-sage to the WLAN UE according to the received Access Rejection message.
19. The method according to claim 1, 7, 8, 9, 11 or 12, wherein, when the authentication to the WLAN UE fails, the step of sending an access instruction com-prises:
the Home Network sending an Access Rejection message to the WLAN Access Network via the Visited Mobile Communication Network newly selected by the WLAN UE; the step of completing disconnection and/or ac-cess between the WLAN UE and the corre-sponding Visited Mobile Communication Net-
works comprises: the WLAN Access Network forwarding the Access Rejection message to the WLAN UE according to the received Access Re-jection message.
5
20. The method according to claim 1, 7, 8, 9, 11 or 12, wherein, when the authentication to the WLAN UE fails, the step of sending an access instruction com-prises:
10
the Home Network sending an Access Rejection message to the WLAN Access Network via the Visited Mobile Communication Network newly selected by the WLAN UE, and sending a Re-
15 authentication Request to the WLAN Access Network via the Visited Mobile Communication Network that the WLAN UE has accessed; the step of completing disconnection and/or ac-cess between the WLAN UE and the corre-
20 sponding Visited Mobile Communication Net- works comprises: the WLAN Access Network forwarding the Access Rejection message to the WLAN UE according to the received Access Re-jection message, and re-authenticating to the
25 Re-authentication Request from the Visited Mo- bile Communication Network that the WLAN UE has accessed.
21. The method according to claim 1, 7, 8, 9, 11 or 12, 30 wherein, when the authentication to the WLAN UE
fails, the step of sending an access instruction com-prises:
the Home Network sending a Re-authentication 35 Request message to the WLAN Access Network
via the Visited Mobile Communication Network newly selected by the WLAN UE; the step of completing disconnection and/or ac-cess between the WLAN UE and the corre-
40 sponding Visited Mobile Communication Net- works comprises: the WLAN Access Network re-authenticating the Re-authentication Re-quest from the Visited Mobile Communication Network newly selected by the WLAN UE.
45
22. The method according to claim 1, wherein, when re-ceiving the Access Permission message from the newly selected Visited Mobile Communication Net-work, the step of completing disconnection and/or
50 access between the WLAN UE and the correspond- ing Visited Mobile Communication Networks com-prises: the WLAN Access Network informing the Vis-ited Mobile Communication Network newly selected by the WLAN UE to complete resource distribution
55 and parameter configuration the WLAN Access Net- work establishing a connection between the WLAN UE and the newly selected Visited Mobile Commu-nication Network, and setting the state of the con-
18
NSN677-1002, Page 377
35 EP 1 713 207 Al 36
nection as non-activation; and after disconnecting the connection between the WLAN UE and the Visited Mobile Communication Network that the WLAN UE has accessed, activating the established connection between the WLAN UE 5 and the newly selected Visited Mobile Communica-tion Network at once.
23. The method according to claim 1, wherein, the Vis-ited Mobile Communication Network is a middle op- 10
eration network connecting the WLAN UE and its Home Network, or the Home Network of the WLAN UE.
24. The method according to claim 1 or 23, wherein, the 15
Communication Network is a Mobile Communication Network.
25. The method according to claim 1, wherein, the step of authenticating the WLAN UE comprises: 20
an AAA Server in the Home Network authenti-cating to the authentication request from the Vis-ited Mobile Communication Network newly se- lected by the WLAN UE. 25
26. The method according to claim 13, wherein, the step of sending a piece of advertisement information com-prises: sending a notification to the WLAN UE via one of the existing connections, or sends a notifica- 30
tion to the WLAN UE through the newly established connection.
27. The method according to claim 26, wherein, the no-tification comprises the total number of the current 35
connections, and/or specific selection information of the connections.
40
45
50
55
NSN677-1002, Page 378
ry+rMr«rN41,1..0w11, «ww.0,«4•Mf ...I
CG WC:CP
30 PP Visited Network
3GPP Home Network
3GPP AA A Agent
W LAN Access Network erricludirkg or not including
middle network )
Internet/Intranet
Ws/Wc
3GPP AAA Server
CGw/CCF
EP 1 713 207 Al
Fig. 1
20
NSN677-1002, Page 379
WLAN Atvess Network I (including or um including
middle network)
EP 1 713 207 Al
F g. 2
21
NSN677-1002, Page 380
EP 1 713 207 Al
*IAN LIE. WLAN Access Network 3GPP AAA Proxy 3GPP AAA Server
301 sets up s WLAN access connection
302. user identity request
303. sends user identity (carrying network selection
Information)
304. determines the network selection information in N AI belongs to the present
Mobile Communication Network
305. determines a 3GPP AAA Agent Server of the Mobile Cornmanicatirm Network
selected by the WLAN LIE according to NA!
306. sends the user identity and an Access Authentionion Request
Fig. 3
4
22
NSN677-1002, Page 381
EP 1 713 207 Al
WLAN LIE MAN Aceess Network 3GP,P AAA Prw;: 30PP AAA Server
401 sets up a MAN usass iainneetion
user a entity' and an ACt45S
402. user identity request
403. sends user identity (carrying network selection
informaloo)
404, determines, the.oetwork seks:rion informatirm iri"NAI does not Won to the }reseal Mohile
Communication Network
405. sends a network nob tleation silnating
ids the
)
4C6 reselisgs a Mot>ile Communication Network to aer.ess accurding to the
information
407. sCtidS user identity (carrying new network
selection frithrmation
408. deternmes a 36PP AAA Agent Server of the Mobie Contrramication
y th e WE t.l Network selected b k: arcording toNAI
409. se AttatntICV1 Ret:NeW.
Fig. 4
23
NSN677-1002, Page 382
EP 1 713 207 Al
The Wl..AN tiE needing, to reselect a network initiates an access authentication procedure to the WLAN Access betwork
502 -v
c WLAN Access Network initiates an authentication procedure to th Home Network of the Wi.,AN tl E via the new Visited Mobile
COIYttntlf on Network
503
The Home Network authernicate the authentioation request ilom the new Visited Mobile Communication Network„ and sends an access instruction to
the KLAN Access Network via different Visited Mobile Communication Networks
WLAN Visited Mobile Network completes disconnection and for access haw= the WEAN UE and corresponding Visited Mobile Communication
Networks according to the received access instruction
Fig. 5
24
NSN677-1002, Page 383
V WI-AN Access Network completes disconnection and /or access between
the NYLAN HE and corresponding Visited Mobile Communication Network.s according to received access instruction
Fig. 6
EP 1 713 207 Al
60
WLAN needing to reseloct a network Mitt access inahentication procedure to the WLAN Acces rk
602
The WEAN HE and the WLAN Access Network initiates an access authentication procedure , and sends the information of the Visited Mobile
Cominunitwion Network to ihe WEAN Access Network
6
The WI—AN Access Network sends the authenticatim request to the Home Network of the 'LAN HE via the Visited Mobile Commttmt tton Netowrk
newly selected by the WEAN HE to implement authentication
The Home Network of the %IAN HE determines the autheritica align request belongs to the new selected Visited Mobile Communication
Network
605 V
The Home: Network implements authentication to the authentication request from the new Visited Mobile C`OM311unication Network , and sends an access instruction to the WEAN Access Network via different Visited
Mobile Communication Network s
25
NSN677-1002, Page 384
EP 1 713 207 Al
Fig. 7
26
NSN677-1002, Page 385
1-27
1-27
Da% °A"TiliPt4t$114 4301i0rW starch k - h. 4.,kiv0 45)
Authorized ollicer
Telephone No. 86- 10-62084554
EP 1 713 207 Al
INTERNATIONAL SEARCH REPORT Inturnational application No.
PCTICS2005100005
A. CLASSIFICATION OF simian' MNITER
1PCli H041,12/28 According to IntiTtrational Parent Clessiiitvtiort (WC) or to both national classification enti
B. FIELDS SEARCHED
Minimum docuraentation searched (class:flea:ion system followed 1,y classification symbols)
1PC7: 1104L12114,12,24,12/28
Doctrine:station searched other than mintrnum dc.icunientation to the extent that such doentriaftits arc included in the fields sestelted
Electronic data base consulted donna the international search (name of data base and, where practicable, search terms used)
WP1, Eponoc, MS ( g • Rigii ft-1R • !IttR, Man.
authentioninc,aufhotiant+.select+ )
C. DOCUMENTS CONSIDERED 70 BE RELEVANT
Category* Citation of document, with indication, where appropriate, of the tekvant passages Relevant to claim No.
A 0%11416241A ( (1111WE—N) 111.7EIT TEC001.0CrY CO LTD) 07.May 2003(07.05.2003) the whole document
CNI429005 A ( (1441S-41) SHANT114A1 NO 2 INST llitINGXING 09...1o12003(0.07.2003) the whole document
C.141.319296A ( (SONY SONY CORP) 24.0et 2001(24.102001) the whole document
US2003169713A1 ( (,tivzrr ) AT & T CORP (1.110144) 1110 F1 )
11.5, 2003(11.09.2003) the whole document
111 Purthe documents are listed in the continuation of Dox C. E Sec patent family annex.
Special categories of cited documents:
document defining the general state of the art which is not considered to be of purticuler relevance
earlier application or patent hut published on or after die international filing date
declaims which sissy throw doubts on priority claim (S) or which is cited to establish the publication date of another citation or other special reason (as specified)
document teferting to an oral disclosure, use, exhibition ar other means
"P" document published prior to the internatikund .filing date but later than the priority date claimed
Date of the actual completion of the international search
13.Apr 2005 (13.04.2005)
Name and mailing address of the ISA/CH The State Intellectual Pror.:etty0Ifitra, die P.R.China ii Xitucherg Rd., timer Bridge. 'fit:khan District, Beijing, China lt10088 Facsimile No. :6-10-6:013451
Poem PCIVISA1210 (second sheet) (April 2005)
laws-document published alter the international filing date or priority dots and not in conflict with the application but cited to understand the principle or theory underlying the invention
"X" document of particular relevance; the claimed invention =no; be considered novel or cannot be considered to involve en inventive step when the document is taker: alone
"Y.. document of particular relevance; the claimed invention cannot he considered to involve ass inventive step when the domanent is combined with one or more other such documents, such combination being obvious to a person skilled in the at t
" LQ document member of the seine patent fismily
27
NSN677-1002, Page 386
1nternazional application No.
PCT/CN. 20051000095
INTERNATIONAL SEARCH REPORT Inibrrnation on patent family members
Patent Runily Publication Date Puhneation Date 'Patent Doeurnenta referred in the Ilvort
07.05.2003 nom
09.01.2003 none
.24.10.2001 none
11.09.2003 C.A2413944 Al
CNI:116241A
CN1429005 A
CN1319296 A
US2003169713A1 12.06.2003
EP 1 713 207 Al
Vann PCVISA /210 (patent family annex) (April 2005)
28
NSN677-1002, Page 387
1111111111111111
(11) EP 2 007 160 Al
(19) Europaisches Patentamt
European Patent Office
Office europeen des brevets
11111111
II
(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES Fl FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS
• Li, Changhong 02140 Espoo (FI)
• Punz, Gottfried Dr. 1080 Wien (AT)
• Wolfner, Gyorgy 1144 Budapest (HU)
(71) Applicant: Nokia Siemens Networks Oy 02610 Espoo (FI)
(72) Inventors: • Forsberg, Dan
00210 Helsinki (FI)
(74) Representative: Bruglachner, Thomas E. Nokia Siemens Network GmbH & Co. KG Patentabteilung Postfach 80 17 60 81541 Miinchen (DE)
208
Parameter [209 mapping -
I 210
211
: 212
(12) EUROPEAN PATENT APPLICATION
(43) Date of publication:
(51) Int CI.: 24.12.2008 Bulletin 2008/52
HO4Q 7/38 (2006- 01)
(21) Application number: 07012010.0
(22) Date of filing: 19.06.2007
(54) Method and device for performing a handover and communication system comprising such device
(57) A method and a device are provided for perform- ing a handover of a first instance from a first network to a second network, the method comprising the steps of (a) a security transfer message is sent to a second in-
Fig.2
stance (HSS, AAA Server); (b) the second instance proc-esses security parameters; and (c) the second instance initiates an authentication based on the security param-eters processed.
201
UE
202
3GPP Access
203
(Ur)Trusted Non-3GPP
Access
204
PDN-GW
205
HSS / MA Server
206a
206b
207
Printed by Jouve, 75001 PARIS (FR)
NSN677-1002, Page 388
1 EP 2 007 160 Al
2
Description
[0001] The invention relates to a method and to a de-vice for performing a handover and a communication sys-tem comprising such a device. [0002] According to document 3GPP TS 23.402 V1.0.0 (2007-05), the mobility management procedures specified to handle mobility between 3GPP and non 3GPP accesses shall include mechanisms to minimize the handover latency due to authentication and authori-zation for network access. This applies to User Equip-ments (UEs) either supporting simultaneous radio trans-mission capability or not supporting it. [0003] Fig.1 corresponds to Fig.4.2.1-1 of 3GPP TS 23.402 visualizing a non-roaming architecture for non-3GPP accesses within an Evolved Packet System (EPS). [0004] For a detailed description of Fig.1 reference is made to 3GPP TS 23.402, in particular in combination with the documents as cited therein. [0005] Some of the reference points as shown in Fig. 1 can be summarized as follows:
S2a: It provides the user plane with related control and mobility support between trusted non 3GPP IP access and a Gateway.
S2b: It provides the user plane with related control and mobility support between an Evolved Pack-et Data Gateway (ePDG) and the Gateway.
S2c: It provides the user plane with related control and mobility support between the UE and the Gateway. This reference point is implemented over trusted and/or untrusted non-3GPP Ac-cess and/or 3GPP access.
S5: It provides user plane tunneling and tunnel management between a Serving Gateway and a Packet Data Network Gateway (PDN GW). It is used for Serving GW relocation due to UE mobility and in case the Serving GW needs to connect to a non collocated PDN GW for the required PDN connectivity.
S6a: This interface is defined between a Mobility Management Entity (MME) and a Home Sub-scriber Server (HSS) for authentication and au-thorization.
S6c: It is the reference point between the PDN Gate- way in the HPLMN and a 3GPP AAA server for mobility related authentication, if needed. This reference point may also be used to retrieve and request storage of mobility parameters.
S7: It provides transfer of (QoS) policy and charging rules from a PCRF to Policy and Charging En-forcement Point (PCEF).
SGi: It is the reference point between the PDN Gate- way and the packet data network. Packet data network may be an operator external public or private packet data network or an intra operator
5 packet data network, e.g. for provision of IMS services. This reference point corresponds to Gi and Wi functionalities and supports any 3GPP and non-3GPP access systems.
10 Wa* :
It connects the Untrusted non-3GPP IP Access with the 3GPP AAA Server/Proxy and trans-ports access authentication, authorization and charging-related information in a secure man-ner.
15
Ta":
It connects the Trusted non-3GPP IP Access with the 3GPP AAA Server/Proxy and trans-ports access authentication, authorization, mo-bility parameters and charging-related informa-
20
tion in a secure manner.
Wm": This reference point is located between 3GPP AAA Server/Proxy and an Evolved Packet Data Gateway (ePDG) and is used for AAA signaling
25 (transport of mobility parameters, tunnel au- thentication and authorization data).
Wn*: This is the reference point between the Untrust- ed Non-3GPP IP Access and the ePDG. Traffic
30 on this interface for a UE initiated tunnel has to be forced towards ePDG.
Wx*:
This reference point is located between 3GPP AAA Server and HSS and is used for transport
35
of authentication data.
[0006] An approach to minimize handover latency for the target network access is to change the architecture as shown in Fig.1 and to provide new interfaces, e.g.,
40 between the Mobility Management Entity (MME) and the AAA-Server. [0007] Such solution, however, disadvantageously leads to a tight interworking structure comprising com-plex interfaces with different security mechanism to cope
45 with. [0008] The problem to be solved is to overcome the disadvantages as stated before and to provide an ap-proach that allows improved handover latency in partic-ular in combination with existing 3GPP architecture.
50 [0009] This problem is solved according to the features of the independent claims. Further embodiments result from the depending claims. [0010] In order to overcome this problem, a method for performing a handover of a first instance from a first
55 network to a second network comprising the following steps:
(a) a security transfer message is sent to a second
2
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instance (HSS, AAA Server); (b) the second instance processes security param-eters, (c) the second instance initiates an authentication based on the security parameters processed.
[0011] Hence, based on the security parameters proc-essed at the second instance, the authentication of the handover can be achieved much faster than without such processing of security parameters. [0012] This allows a significant reduction of handover latency. [0013] In an embodiment, the method further compris-es the steps:
the first instance determines a deterioration of the connection to the first network; the first instance scans for further connections; the first instance requests a handover to the second network.
[0014] Hence, the first instance may recognize, e.g. a deterioration of a signal strength to the first network and hence it may initiate a handover to the second network that has been passively scanned by said first instance. [0015] In another embodiment, the step (b) comprises:
evaluating parameters in order to determine and/or obtain said security parameters; mapping of security parameters; derivation of security parameters; calculation of security parameters.
[0016] Hence, there are several possibilities to proc-ess security parameters. In particular, existing parame-ters (that have been negotiated for the connection with the first network) may be mapped to security parameters that can be utilized for the second network. This is in particular useful if the second network can be trusted. [0017] In a further embodiment, the initiation of the au-thentication comprises at least a transfer of a security context, in particular an EAP success information. [0018] Such information can be used to significantly simplify the handover process and hence to reduce la-tency time associated with such a handover process. [0019] In a next embodiment, the first instance is of the following type:
a user equipment; a mobile terminal; a mobile computer; a mobile network element.
[0020] The first instance may in particular be the user equipment (UE) initiating the handover as described, in particular the authentication based on the processed se-curity parameters. [0021] It is also an embodiment that the first network
and/or the second network is of the following type:
a WiMAX network; an I-WLAN network;
5 a 3GPP access network; in general a trusted non-3GPP access network; in general a non-trusted non-3GPP access network.
[0022] Pursuant to another embodiment, the first net- /0 work and the second network are of different type.
[0023] Hence, different possibilities of connections be-tween (non) 3GPP access networks (trusted or non-trust-ed) can occur. [0024] According to an embodiment, the security
15 transfer message is sent from the first instance, in par- ticular the user equipment. Furthermore, the security transfer message can be sent from a 3GPP access node, in particular if the handover should be executed from a 3GPP access network to a non-3GPP access network.
20 [0025] According to another embodiment, the security transfer message is a security context transfer message, in particular a security context transfer request. [0026] A security context transfer message or request may comprise a target network and an identifier of a user
25 equipment as parameters. [0027] In yet another embodiment, the second in-stance is of the following type:
an authentication, authorization and accounting 30 server (AAA Server);
a home subscriber server (HSS).
[0028] Both such components separately or in combi-nation thereof may be utilized for processing security pa-
35 rameters as described herein. Furthermore, the second instance may then initiate a simplified authentication process and thereinafter the handover with reduced la-tency time. [0029] The problem as stated above is also solved by
40 a device for data processing comprising a processor unit that is arranged and/or equipped such that the method as described herein is executable on said processor unit. [0030] Furthermore, the problem stated above can be solved by a device for initiating a handover of a first in-
45 stance from a first network to a second network compris- ing a processor unit that is arranged such that the method as described herein can be run on said processor unit. [0031] Moreover, the problem as stated supra is solved by a device for initiating a handover of a first instance
50 from a first network to a second network comprising:
a first unit for receiving a security transfer message; a second unit for processing security parameters; a third unit for initiating an authentication based on
55 the security parameters processed.
[0032] It is to be noted that said first, second and third units may be functional entities that can be realized in
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various ways, i.e. as one or several block(s) of hardware and/or as one or several pieces of software running on one or more devices. [0033] According to an embodiment, the device is
an authentication, authorization and accounting server and/or a home subscriber server.
[0034] The problem stated above is also solved by a communication system comprising the device as de-scribed herein. [0035] Embodiments of the invention are shown and illustrated in the following figures:
Fig.2 shows a message sequence chart illustrating a handover from a 3GPP access network to a (non)-trusted non-3GPP access network;
Fig.3 shows a message sequence chart illustrating a handover from a trusted non-3GPP access net-work to a 3GPP access network;
Fig.4 shows a non-roaming architecture for non- 3GPP access with an Evolved Packet System utilizing a path through the architecture for se-curity context transfer from non-3GPP access networks to 3GPP access networks;
Fig.5 shows a non-roaming architecture for non- 3GPP access with an Evolved Packet System utilizing a path through the architecture for se-curity context transfer from 3GPP access net-works to non-3GPP access networks;
Fig.6 shows a device for initiating an authentication, in particular for initiating a handover.
[0036] Fig.2 shows a message sequence chart illus-trating a handover from a 3GPP Access to a trusted non-3GPP Access. This Fig.2 is also applicable for the hando-ver from a 3GPP Access to a non-trusted non-3GPP Ac-cess. [0037] It is to be noted that the term "Access" herein also refers to an access network or to an access node. [0038] Fig.2 comprises a User Equipment UE 201, the 3GPP Access 202, the Trusted Non-3GPP Access 203, a Packet Data Network Gateway PDN-GW 204 and a Home Subscriber Server HSS or an Authentication, Au-thorization and Accounting Server (AAA Server) 205. [0039] Arrows 206a and 206b indicate that the User Equipment UE 201 is connected to the PDN-GW 204 and hence a connection via 3GPP access is established. [0040] Sending a message 207 to the 3GPP Access 202, the User Equipment UE 201 indicates to the 3GPP Access 202 that a signal relating to the established con-nection deteriorates and that the User Equipment UE 201 wants to change the network connection. Hence, by
sending this message 207 the User Equipment UE 201 may trigger a change of network thereby also indicating a destination network to which it wants to be handed over. [0041] Prior to sending such message 207 the User
5 Equipment UE 201 may (permanently) scan for other net- works available. Such networks may be of different types, in particular 2G, 3G networks or Wireless LANs or World-wide I nteroperabi lity for Microwave Access (WiMAX) net-works, or any other access networks which are integrated
/o with 3GPP's EPS. [0042] A message 208 is sent from the 3GPP Access 202 to the HSS/ASS Server 205 requesting a security context transfer indicating a target network (TargetNet) and an identification or identifier of the User Equipment
15 UE 201 (UE id). The message 208 can be as follows:
Sec Ctx Transfer (TargetNet, UE id)
[0043] A Mobility Management Entity MME (see Fig. 20 1) transfers the security context to the HSS/AAA Server
205 via the PDN-GW 204. The HSS may in particular insert actual security vectors for the user of the AAA Serv-er. [0044] In a block 209, a parameter mapping, in partic-
25 ular a processing of security parameters is conducted. Such processing may comprise an evaluation of param-eters in order to determine and/or to obtain security pa-rameters, a mapping of (security) parameters, a deriva-tion of security parameters or a calculation of security
30 parameters. [0045] The HSS/AAA Server 205 can use the vectors and/or key material provided for a fast re-authentication (e.g., fast Extensible Authentication Protocol for UMTS Authentication and Key Agreement (EAP-AKA) re-au-
35 thentication) or no authentication (e.g., utilizing key ma- terial as provided, skipping an EAP authentication). [0046] It is to be noted that such (re-)authentication can be network dependent and in particular separately predefined according to distinct networks.
40 [0047] A message 210 is sent from the HSS/AAA Serv- er 205 to the trusted non-3GPP Access 202. The mes-sage may be as follows:
Sec Ctx Transfer (UE id, derived keys) 45
thereby indicating an identification of a User Equipment (here: the User Equipment UE 201) and derived keys as provided by the parameter mapping 209. [0048] The derived keys may in particular be based on
50 security vectors, e.g., a cipher key (CK), an integrity key (IK) or a key used in an LTE (KASME). Without (re)-au-thentication, security parameters may be sent to the tar-get trusted non-3GPP Access 203 (if required) by an equivalent of an EAP-AKA success message including
55 the key material. [0049] An arrow 211 indicates that the User Equipment UE 201 detaches from the 3GPP Access 202. [0050] An arrow 212 indicates that the User Equipment
4
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UE 201 attaches to the trusted non-3GPP Access (net-work) using the (same) security parameters as provided to the target trusted non-3GPP access network. [0051] It is to be noted that no explicit synchronization is required, i.e. it is assumed that the detachment from 3GPP access and attachment to trusted non-3GPP ac-cess has in total a higher latency than the security context transfer. [0052] Fig.3 shows a message sequence chart illus-tration of a handover from a trusted non-3GPP Access to a 3GPP Access, in particular an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and/or a Release 8 3GPP Access network. [0053] Fig.3 comprises a User Equipment UE 301, the 3GPP Access 302, the Trusted Non-3GPP Access 303, a Packet Data Network Gateway PDN-GW 304 and a Home Subscriber Server HSS or an Authentication, Au-thorization and Accounting Server (AAA Server) 305. [0054] Arrows 306a and 306b indicate that the User Equipment UE 301 is connected to the PDN-GW 304 and hence a connection with the trusted non-3GPP access is established. [0055] In a message 307, the User Equipment UE 301 sends a Sec Ctx Transfer Request (Target Network Id) i.e., a security context transfer request message com-prising a target network identification, to the HSS/AAA Server 305. Such message 307 can be in particular sent via non-3GPP access NW and subsequently via Ta* and/or Wa* reference points (see Fig.1); in this case a link specific message from the User Equipment UE 301 to the authenticator entity in the non-3GPP access net-work, e.g., an EAP message, may be used. [0056] In a block 308 a parameter mapping, in partic-ular a processing of security parameters is conducted. Such processing may comprise an evaluation of param-eters in order to determine and/or to obtain security pa-rameters, a mapping of (security) parameters, a deriva-tion of security parameters or a calculation of security parameters. [0057] The HSS/AAA Server 305 may obtain 3GPP security parameters based on an authentication vector that is currently used in the Trusted Non-3GPP Access network 303. [0058] It is to be noted that the HSS/AAA Server 305 may be aware of the authentication vectorthat is currently being used - in particular if I-WLAN is utilized. [0059] A message 309 is sent from the HSS/AAA Serv-er 305 to the 3GPP Access 302, in particular to an MME, which is the authenticator in 3GPP access, as follows:
Sec Ctx Transfer (UE id, derived keys) thereby indicating an identification of a User Equip-ment (here: the User Equipment UE 301) and de-rived keys as provided by the parameter mapping 308. The MME is determined before by the HSS/AAA Server 306.
[0060] Based on the current authentication vector, the HSS may generate key material, e.g. a key used in an LTE (KASME) to be used in the Mobility Management En-tity (MME). If such approach is not admissible, the au-
5 thentication will have to be executed. [0061] An arrow 310 indicates that the User Equipment UE 301 attaches to the 3GPP Access (network) using the security parameters as provided. [0062] The MME and the User Equipment UE 301 may
10 use the keys for further appliance in an LTE environment (e.g., AS and NAS specific keys may be derived). Fig.4 shows a non-roaming architecture for non-3GPP access with an Evolved Packet System utilizing a path 501 through the architecture for security context transfer
15 from non-3GPP access networks to 3GPP access net-works; [0063] Fig.5 shows a non-roaming architecture for non-3GPP access with an Evolved Packet System utiliz-ing a path 601 through the architecture for security con-
20 text transfer from 3GPP access networks to non-3GPP access networks; [0064] Fig.6 shows a device for initiating an authenti-cation, in particular within the process of the handover. Such a device 700 may in particular be an authentication,
25 authorization and accounting server (AAA Server) and/or a home subscriber server (HSS). [0065] The device 700 comprises a First Unit 701 for receiving a security transfer message 704 and a Second Unit 702 for processing security parameters. The device
30 700 further comprises a Third Unit 703 for initiating an authentication 705 based on the security parameters processed. Such authentication 705 may occur during execution of a handover thereby utilizing the security pa-rameters processed and reducing the processing time
35 required for the handover.
Abbreviations (in alphabetical order):
[0066] 40
AAA Authentication, Authorization and Ac- counting
EAP Extensible Authentication Protocol EAP-AKA EAP for UMTS Authentication and Key
45 Agreement ePDG Evolved Packet Data Gateway EPS Evolved Packet System E-UTRAN Evolved UTRAN GW Gateway
50 HPLMN Home Public Land Mobile Network HSS Home Subscriber Server I-WLAN Interworking WLAN MME Mobility Management Entity PCEF Policy and Charging Enforcement Func-
55 tion PCRF Policy Control and Charging Rules Func-
tion PDN Packet Data Network
5
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UE UTRAN
WiMAX
WLAN
Claims
User Equipment Universal Terrestrial Radio Access Net-work Worldwide Interoperability for Microwave Access Wireless Area Network
- a WiMAX network; - an I-WLAN network; - a 3GPP access network; - in general a trusted non-3GPP access network;
5 - in general a non-trusted non-3GPP access net- work.
7. The method according to any of the preceding claims, wherein the security transfer message is sent
10 from the first instance.
8. The method according to any of the preceding claims, wherein the security transfer message is sent from a 3GPP access node.
15
9. The method according to any of the preceding claims, wherein the security transfer message is a security context transfer message, in particular a se-curity context transfer request.
20
10. The method according to any of the preceding claims, wherein the second instance is of the follow-ing type:
25 - an authentication, authorization and account- ing server; - a home subscriber server.
11. The method according to any of the preceding 30 claims, wherein the first network and the second net-
work are of different type.
12. A device for data processing comprising a processor unit that is arranged such that the method according
35 of any of the preceding claims is executable on said processor unit.
13. A device for initiating a handover of a first instance from a first network to a second network comprising
40 a processor unit that is arranged such that the meth- od according to any of the claims 1 to 11 can be run on said processor unit.
14. A device for initiating a handover of a first instance 45 from a first network to a second network comprising:
- a first unit for receiving a security transfer mes-sage; - a second unit for processing security parame-
50 ters; - a third unit for initiating an authentication based on the security parameters processed.
15. The device according to any of claims 12 to 14, said 55 device is
- an authentication, authorization and account-ing server and/or
1. A method for performing a handover of a first in-stance from a first network to a second network com-prising the following steps:
(a) a security transfer message is sent to a sec-ond instance (HSS, AAA Server); (b) the second instance processes security pa-rameters; (c) the second instance initiates an authentica-tion based on the security parameters proc-essed.
2. The method according to claim 1, comprising the fol- lowing steps prior to step (a):
- the first instance determines a deterioration of the connection to the first network; - the first instance scans for further connections; - the first instance requests a handover to the second network.
3. The method according to any of the preceding claims, wherein the step (b) comprises:
- evaluating parameters in order to determine and/or obtain said security parameters; - mapping of security parameters; - derivation of security parameters; - calculation of security parameters.
4. The method according to any of the preceding claims, wherein the initiation of the authentication comprises at least a transfer of a security context, in particular an EAP success information.
5. The method according to any of the preceding claims, wherein the first instance is of the following type:
- a user equipment; - a mobile terminal; - a mobile computer; - a mobile network element.
6. The method according to any of the preceding claims, wherein the first network and/or the second network is of the following type:
6
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11 EP 2 007 160 Al 12
- a home subscriber server.
16. Communication system comprising the device ac-
cording to any of claims 12 to 15. 5
10
15
20
25
30
35
40
45
50
55
NSN677-1002, Page 394
\Wn*
S2a S2c
HPLMN
r
HSS
Wx*
C2G/3G
SGSN
S I -MME
E-UTRAN
S3
S10
S I -U
II
Serving
Gateway
SGi
S2b
ePDG
Rx+
Operator's IP Services
(e.g. IMS, PSS
etc.)
S6c
Wm*
3GPP AAA Server
PDN Gateway
S7
S5
S4 S6a
MME
PCRF
Tan UE
Untrusted Non-3GPP IP
Access
Trusted Non-3GPP IP
Access
Non-3GPP
Network Trusted/Unt ted* Non-3GP P Access
or ' P Access Wa*
Fig.1
IN 0
91.
LO
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d3
* Untrusted non-3GPP access requires ePDG in the data
NSN677-1002, Page 395
206a 206b
207 >
208
Fig.2 201
UE
I I
202
3GPP Access
203
(Uri)Trusted Non-3GPP
Access 1
204
PDN-GW
>
205
HSS / AM Server
1209
>1 1
IN 0
91.
LO
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d3
Parameter mapping
210 <
NSN677-1002, Page 396
Fig.3 301
302
303
304
305
1 I 307
UE
. , < 1
1 3GPP Access
(Ur)Trusted Non-3GPP
Access
i
PDN-GW
1 HSS /
AAA Server
Parameter mapping -
I I
306a
306b
1 I I
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309
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3
NSN677-1002, Page 397
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Networks/ Trusted/Unt
Non-3GP Or
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II
ePDG 3GPP AAA Server
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S2b
Rx+
Operator's IP Services
(e.g. IMS, PSS
etc.)
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7
S10 Serving
Gateway
S5
PDN Gateway
S I-U 501
Wm*
S2a S2c
S3
S4 S6a 2G/3G
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PCRF
Fig.4
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NSN677-1002, Page 398
Non-3GPP
Network sled*
P Access P Access
Trusted/Un
Non-3GP
or
Wn*
r
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Access
Untrusted Non-3GPP IP
601/
601
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rving
S5 S I -U S6c
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II
601
S2c
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Server
S7
SI 0
S2a ePDG
SGi
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Operator's IP Services
(e.g. IMS, PSS
etc.)
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2G/3G
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Fig.5
IN 0
91.
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NSN677-1002, Page 399
Initiate Authentication 705
First Unit 701
Second Unit 702
Third Unit 703
Fig.6
700
Security Transfer Message 704
IN 0
91.
LO
O Z
d3
NSN677-1002, Page 400
1
2 0
EP 2 007 160 Al
European Patent
Office EUROPEAN SEARCH REPORT
Application Number
EP 07 01 2010
DOCUMENTS CONSIDERED TO BE RELEVANT
Category Citation of document with indication, where appropriate, of relevant passages
Relevant to claim
CLASSIFICATION OF THE APPLICATION (IPC)
X EP 1 662 726 A (SAMSUNG ELECTRONICS CO LTD 1,14 INV. [KR]) 31 May 2006 (2006-05-31) H04Q7/38
Y * paragraphs [0001], [0030] * 2-13,15, 16
* paragraph [0037] - paragraph [0040] * * paragraph [0050] - paragraph [0052] * * figures 2,4 *
X WO 2007/049936 A (SAMSUNG ELECTRONICS CO 1,14 LTD [KR]; RAJAVELSAMY R [IN]; JEEDIGUNTA VENKAT) 3 May 2007 (2007-05-03)
Y * paragraphs [0001], [0009] - paragraph 2-13,15, [0013] * 16 * paragraph [0038] - paragraph [0048] * * paragraph [0058] - paragraph [0066] * * paragraph [0112] - paragraph [0119] * * figures 2,3,6 *
X EP 1 311 136 A (LUCENT TECHNOLOGIES INC 1,14 [US]) 14 May 2003 (2003-05-14) * abstract * TECHNICAL FIELDS
* paragraph [0009] - paragraph [0010] * SEARCHED (IPC)
* paragraph [0023] - paragraph [0024] * H040 * figure 1 * HO4L
Y WO 2005/027559 A (DOCOMO COMM LAB EUROP 1,14 GMBH [DE] ; WANG HU [DE]) 24 March 2005 (2005-03-24) * page 3, line 21 - page 4, line 11 * * page 5, line 1 - line 20 * * page 12, line 1 - line 11 * * page 12, line 20 - page 14, line 23 * * page 15, line 20 - line 30 * * figures 4,5 *
-/--
The present search report has been drawn up for all claims
Plane of search Date of completion of the search Fxaminel
Munich 19 November 2007 Rosenauer, Hubert
CATEGORY OF CITED DOCUMENTS T theory or principle underlying the invention E : earlier patent document, but published on, or
X : particularly relevant if taken alone after the filing date Y : particularly relevant if combined with another D : document cited in the application
document of the same category L : document cited for other reasons A : technological background O: non-written disclosure & : member of the same patent family, corresponding P : intermediate document document
14
NSN677-1002, Page 401
0
O 0
EP 2 007 160 Al
European Patent Office
EUROPEAN SEARCH REPORT Application Number
EP 07 01 2010
DOCUMENTS CONSIDERED TO BE RELEVANT
Category Citation of document with indication, where appropriate, of relevant passages
Relevant to claim
CLASSIFICATION OF THE APPLICATION (IPC)
Y US 2004/218605 Al (GUSTAFSSON EVA [SE] ET AL) 4 November 2004 (2004-11-04) * paragraph [0052] * * paragraph [0056] - paragraph [0070] *
* figures 3-5 *
1,14
TECHNICAL FIELDS SEARCHED (IPC)
The present search report has been drawn up for all claims
Place of search
Munich
Date of completion of the search
19 November 2007
Examiner
Rosenauer, Hubert
CATEGORY OF CITED DOCUMENTS T : theory or principle underlying the invention E : earlier patent document, but published on, or
X : particularly relevant if taken alone after the filing date Y : particularly relevant it combined with another D : document cited in the application
document of the same category L : document cited for other reasons A : technological background 0 : non-written disclosure & : member of the same patent family, corresponding P : intermediate document document
15
NSN677-1002, Page 402
if>
0_ OC OC O
EP 2 007 160 Al
ANNEX TO THE EUROPEAN SEARCH REPORT ON EUROPEAN PATENT APPLICATION NO. EP 07 01 2010
This annex lists the patent family members relating to the patent documents cited in the above-mentioned European search report. The members are as contained in the European Patent Office EDP file on The European Patent Office is in no way liable for these particulars which are merely given for the purpose of information.
19-11-2007
Patent document cited in search report
Publication date
Patent family me ITIber(s)
Publication date
EP 1662726 A 31-05-2006 KR 20060059064 A 01-06-2006 US 2006146803 Al 06-07-2006
WO 2007049936 A 03-05-2007 KR 20070046012 A 02-05-2007
EP 1311136 A 14-05-2003 NONE
WO 2005027559 A 24-03-2005 AU 2003258718 Al 06-04-2005 AU 2003294788 Al 06-04-2005 WO 2005027557 Al 24-03-2005 JP 2007515827 T 14-06-2007
US 2004218605 Al 04-11-2004 NONE
0 en For more details about this annex : see Official Journal of the European Patent Office, No. 12/82
16
NSN677-1002, Page 403
12 I
320 300
3GPP Network
230
Huv244.
WIG
Network
Packet Data
SGSN
220
Mobile Station
Mobile Station
210
UTRAN
Non-3GPP Network In
O
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
(19) World Intellectual Property Organization International Bureau
(43) International Publication Date 1 March 2007 (01.03.2007)
III III 11111111 11101 11111 11111 1110 II II 111111 1 1111 11111 111111111111111E1111111111111 1111 1111
(10) International Publication Number WO 2007/024115 Al PCT
(51) International Patent Classification: HO4L 12/46 (2006.01)
(21) International Application Number: PCT/KR2006/003349
(22) International Filing Date: 24 August 2006 (24.08.2006)
(25) Filing Language: Korean
(26) Publication Language: English
(30) Priority Data: 10-2005-0078824 26 August 2005 (26.08.2005) KR 10-2006-0080075 23 August 2006 (23.08.2006) KR
(71) Applicant (for all designated States except US)• ELEC-TRONICS AND TELECOMMUNICATIONS RE-SEARCH INSTITUTE [KR/KR]; 161, Gaj eong-dong, Yuseong-gu, Daejeon 305-350 (KR).
(72) Inventors; and (75) Inventors/Applicants (for US only): CHEON,
Kyung-Yul [KR/KR]; 161, Gajeong-dong, Yuseong-gu, Daejeon 305-350 (KR). RO, Kwang-Hyun [KR/KR]; 161, Gajeong-dong, Yuseong-gu, Dacjeon 305-350 (KR). SHIN, Jae-Wook [KR/KR]; 161, Gajeong-dong, Yuseong-gu, Daejeon 305-350 (KR). KWON, Hye-Yeon [KR/KR] ; 161, Gajeong-dong, Yuseong-gu, Daejeon 305-350 (KR). SHIN, Hyung-Cheol [KR/KR]; 161, Gajeong-dong, Yuseong-gu, Daejeon 305-350 (KR). JUNG, Kwang-Ryul [KR/KR]; 161, Gaj eong-dong, Yuseong-gu, Daejeon 305-350 (KR). HWANG, You-Sun
[KR/KR]; 161, Gajeong-dong, Yuseong-gu, Dae-jeon 305-350 (KR). PARK, Ae-Soon [KR/KR]; 161, Gajeong-dong, Yuseong-gu, Daejeon 305-350 (KR).
(74) Agent: YOU ME PATENT & LAW FIRM; Seolim bldg., 649-10, Yoksam-dong, Kangnam-ku, Seoul 135-080 (KR).
(81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, Al, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FT, GB, GD, GE, GH, GM, I-IN, I-1R, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
(84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), European (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FL FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Published: with international search report
For two-letter codes and other abbreviations, refer to the "Guid-ance Notes on Codes and Abbreviations" appearing at the begin-ning of each regular issue of the PCT Gazette.
(54) Title: AN APPARATUS AND A METHOD FOR SERVICE CONTINUITY BETWEEN UMTS NETWORK AND WLAN NETWORK
200
420
100
(57) Abstract: Service continuity is provided between a 3GPP network and a non-3GPP network. When a mobile station having accepted service in the 3GPP network moves to the non-3GPP network or returns from the non-3GPP network to the 3GPP network, an interworking gateway is interworked with a GGSN through a universal tunnel using a packet data network, and accordingly a mobile subscriber may accept seamless service.
NSN677-1002, Page 404
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PCT/KR2006/003349
AN APPARATUS AND A METHOD FOR SERVICE CONTINUITY
BETWEEN UMTS NETWORK AND WLAN NETWORK
5 BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to a service continuity apparatus and
method for providing a seamless service between a universal mobile
communication system network and wireless local area network. More
10 particularly, the present invention relates to a service continuity apparatus
and method for performing a handover without breaking a service between
a 3GPP network and non-3GPP network.
(b) Description of the Related Art
A universal mobile telecommunication system (hereinafter, referred
15 to as 'UMTS') presently includes a third generation mobile
telecommunication system developed by a framework known as an
international mobile communication standard-2000 (IMT-2000).
The third generation mobile communication system had been
designed to provide multimedia communication. It has a high data speed
20 so that it can increase public and private network information access and
service and provide flexible telecommunication. Such a third generation
mobile communication system has been studied regarding standard
technologies by a 3rd Generation Partnership Project (3GPP) by
1
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standardization institutions or enterprises of many countries. Hereinafter,
a system or network provided by the 3GPP, that is, the standardization
institutions, is referred to as "3GPP system" or "3GPP network". In
addition, a system (e.g., wireless local area network) or network not
5 provided by the 3GPP, that is, the standardization institutions, for example,
is referred to as "non-3GPP system" or "non-3GPP network".
The UMTS has a drawback in that a spectrum is largely consumed
and data rate is low in comparison with the wireless local area network
(hereinafter, referred to as 'WLAN'). Accordingly, a system and method
10 for utilizing WLAN bands is required so as to supplement a bandwidth of
UMTS and improve efficiency thereof.
A conventional release 6-based 3GPP UMTS has provided an
inter-network loaming structure for utilizing the WLAN in the 3GPP UMTS
network and non-3GPP network. That is, it is described for a 3GPP
15 subscriber to accept services such as 3GPP network authentication,
authorization, and charging, and then to accept service of the 3GPP when
the 3GPP subscriber accesses to the WLAN. Accordingly, a mobile
station may accept a packet service though the 3GPP network even when
it accesses the WLAN.
20 However, according to such a conventional structure, when the
mobile station having accessed the 3GPP network moves in the WLAN
while accepting a service or otherwise, the mobile station cannot use a
previously-used address in a moved network. That is, since the mobile
2
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station must accept a new address from a gateway GPRS support node
(GGSN) or a packet data gateway (PDG) of a newly moved network when
it moves between networks, the mobile station cannot accept seamless
service.
5 The above information disclosed in this Background section is only
for enhancement of understanding of the background of the invention and
therefore it may contain information that does not form the prior art that is
already known in this country to a person of ordinary skill in the art.
SUMMARY OF THE INVENTION
10 The present invention has been made in an effort to provide a
service continuity apparatus and method having advantages of supporting
a seamless service when a mobile station moves between a well known
3GPP UMTS network and a non-3GPP network.
An exemplary embodiment of the present invention provides a
15 service continuity apparatus for supporting service continuity between a
universal mobile communication system network and a wireless local area
network. The service continuity apparatus includes a first node for
transmitting a data packet to a mobile station in the universal mobile
communication system network; a second node for performing a wireless
20 gate function between the first node and the packet data network and
allocating a first address to the mobile station through the first node so as
to communicate data with the packet data network; and an interworking
gateway for generating tunneling with the second network through the
3
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packet data network and providing a seamless service to the mobile station
using the first address when the mobile station moves from the universal
mobile communication system network to the wireless local area network.
At this time, the interworking gateway generates tunneling with the
5 second node through the packet data network and provides a seamless
service to the mobile station using the first address when the mobile station
returns from the wireless local area network to the universal mobile
communication system network.
Another embodiment of the present invention provides a service
10 continuity method for supporting service continuity between a universal
mobile communication system network and a wireless local area network.
The service continuity includes (a) a first node performing a wireless gate
function of an inter-packet data network by allocating a first address for
communicating data with the packet data network to the mobile station
15 accessed to the universal mobile communication system network and
recoding the allocated first address on an authentication server;
(b) an interworking gateway receiving a tunnel establishment
request message from the mobile station moved from the universal mobile
communication system network to the wireless local area network;
20 (c) the interworking gateway performing user authentication and
authorization and receiving the recoded first address from the
authentication server by being interworked with the authentication server;
(d) the interworking gateway generating tunneling with the first
4
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node through the packet data network; and
(e) the interworking gateway transmitting a tunnel establishment
response message including the received first address to the mobile
station.
5 In addition, yet another embodiment of the present invention
provides (a) a first node for transmitting a packet in a service area of the
universal mobile communication system network receiving a PDP context
activation request message from a mobile station, the mobile station
having returned from the wireless local area network to the universal
10 mobile communication system network;
(b) the first node transmitting a PDP context generation request
message to a second node, the second node for performing a wireless
gate to a node packet data network;
(c) the second node receiving a PDP address from an
15 authentication server the PDP address being previously allocated to the
mobile station accessed to the universal mobile communication system
network so as to perform a data communication with the packet data
network;
(d) the second node generating tunneling to an interworking
20 gateway through the packet data network; and
(e) the first node transmitting a PDP context activation response
message to the mobile station using the received PDP address.
5
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BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram of an interworking system between a
3GPP network and a non-3GPP network for supporting a seamless service
according to an exemplary embodiment of the present invention.
5 FIG. 2 is a flowchart for showing how a mobile station moves from a
3GPP network to a non-3GPP network according to an exemplary
embodiment of the present invention.
FIG. 3 is a flowchart for showing how a mobile station moves from a
non-3GPP network to a 3GPP network according to an exemplary
10 embodiment of the present invention.
FIG. 4 is a schematic diagram of an interworking system between a
3GPP network and a non-3GPP network for supporting a seamless service
according to another exemplary embodiment of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
15 In the following detailed description, only certain exemplary
embodiments of the present invention have been shown and described,
simply by way of illustration. As those skilled in the art would realize, the
described embodiments may be modified in various different ways, all
without departing from the spirit or scope of the present invention.
20 Accordingly, the drawings and description are to be regarded as illustrative
in nature and not restrictive. Like reference numerals designate like
elements throughout the specification. When it is described that an
element is coupled to another element, the element may be directly
6
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coupled to the other element or coupled to the other element through a
third element.
In addition, composition elements shown in the drawings may be
implemented by hardware, software, or a combination thereof, and may be
5 realized by at least one programmed universal device including a
processor, a memory, and input/output interfaces.
Now a service continuity apparatus and method for supporting
service continuity between a 3GPP network and a non-3GPP network
according to an exemplary embodiment of the present invention will be
10 described.
FIG. 1 is a schematic diagram of an interworking system between a
3GPP network and a non-3GPP network for supporting a seamless service
according to an exemplary embodiment of the present invention. The
system shown in FIG. 1 is one example. Accordingly, respective
15
elements known to a person of ordinary skill in the art may be described
briefly to impart understanding of an exemplary embodiment of the present
invention.
In FIG. 1, a mobile station 100 is defined as a general mobile
terminal having a dual mode of 3GPP and non-3GPP. A 3GPP network
20 200 is defined as a general universal mobile communication system
(UMTS) network, and a non-3GPP network 300 is defined as all the
wireless local area networks excluding the 3GPP network. For example,
the non-3GPP network 300 includes the IEEE 602.16, Hyper LAN, Wibro,
7
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WO 2007/024115 PCT/KR2006/003349
and Personal Area Network (PAN).
As shown in FIG. 1, the 3GPP network 200 includes a UTRAN 210,
a SGSN 220, a GGSN 230, an HLR/AAA 240, and an interworking gateway
250.
5 The URRAN UMTS (Terrestrial Radio Access Network) 210 is a
wireless access network for performing a wireless-related function, and
includes a node B (not shown) and a wireless network controller (RNC) (not
shown).
The SGSN (Serving GPRS Support Node: 220) is a node for
10 performing a data packet transmission to the mobile station in a service
area, and has packet routing and transmission, mobility management, local
link management functions. In addition, the SGSN 220 includes a location
register for storing user location information (cell, visitor location register,
and the like) and user profile, in which the user is registered in the SGSN.
15 The GGSN (Gateway GPRS Support Node: 230) performs a
wireless gateway function between the SGSN 220 and the packet data
network (PDN). That is, the GGSN 230 transmits all the data to the
packet data network, in which the data is transmitted/received in the packet
data network. At this time, the GGSN 230 allocates a Packet Data
20 Protocol (PDP) address through the SGSN 220 to the mobile station 100
such that the mobile station 100 may perform data communication with the
packet data network. An HLR/AAA 240 stores the PDP address allocated
by the GGSN 230.
8
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The HLR/AAA 240 stores a home location of the mobile station 100
and the PDP address allocated by the GGSN 230, and performs an
authentication to the mobile station.
An interworking gateway (hereinafter referred to as 'IWG') 250 is for
5 performing a seamless service between the 3GPP network and the
non-3GPP network, and is connected to the GGSN 230 through a universal
tunnel 420 passing through the packet data network 400.
According to an exemplary embodiment of the present invention,
when the mobile station 100 moves from the 3GPP network to the
10 non-3GPP network, GGSN 230, the IWG 250 receives the PDP address
previously allocated by the GGSN 230 from the HLR/AAA 240 and forms a
tunnel 320 to the mobile station 100 by providing the received PDP
address to the mobile station 100.
In FIG. 1, the packet data network 400 may be defined as a
15 packet-based network including both of the Internet and intranet, and the
GGSN 230 and IWG 250 according to an exemplary embodiment of the
present invention respectively includes interfaces 11 and 12 for interworking
with the packet data network 400.
Now, how to interwork a service between the 3GPPnetwork and the
20 non-3GPP network is described with reference to FIG. 2 and FIG. 3.
FIG. 2 is a flowchart for showing how a mobile station moves from a
3GPP network to a non-3GPP network according to an exemplary
embodiment of the present invention.
9
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WO 2007/024115 PCT/KR2006/003349
First, when the mobile station 100 of the 3GPP subscriber accesses
the 3GPP network 200, the GGSN 230 allocates a PDP address to the
mobile station (S10). At this time, the PDP address allocated by the
GGSN 230 is stored at the HLR/AAA 240.
5 When the mobile station 100 accesses the non-3GPP network 300,
the non-3GPP network 300 allocates a local address to the mobile station
100, in which the local address is for communicating data with the
non-3GPP network 300 (S20).
The mobile station 100 then transmits a tunnel establishment
10 request message to the IWG 250 (S30). When the IWG 250 receives the
tunnel establishment request message from the mobile station 100, it
performs user authentication and authorization by being interworked with
the HLR/AAA 240 (S40) and then receives the previously-allocated PDP
address from the HLR/AAA 240.
15 When the IWG 250 receives the PDP address, it cooperates with
the GGSN 230 and establishes the tunnel 420 passing through the packet
data network 400 (S50). At this time, so as to establish a
security-ensured tunnel, it obtains tunnel establishment information from
the HLR/AAA 240.
20 After the IWG 250 has established a tunnel by cooperating with the
GGSN 230, the IWG 250 transmits a tunnel establishment response
message including the PDP address obtained from the HLR/AAA 240 to
the mobile station 100, and accordingly generates a tunnel 320 to the
10
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WO 2007/024115 PCT/KR2006/003349
mobile station 100.
The GGSN 230 performs mobile station-link packet buffering as
soon as it receives the tunnel establishment request message from the
IWG 250, and transmits the buffered packet to the mobile station when the
5 tunnel establishment is finished, and "the mobile station-link packet" is
referred to as a packet transmitted to the mobile station herein.
The mobile station 100 may accept a seamless service with respect
to all packet data transmitted to the 3GPP network using the generated
tunnel 320 by means of the GGSN 230 and IWG 250.
10 In addition, the GGSN 230 may recycle radio resources by
canceling a previously formed GRPS session using the same. That is, the
GGSN 230 transmits the PDP context delete request message to the
SGSN 220 so as to cancel the GRPS session (S70) and the SGSN 220
transmits the PDP context delete response message to the GGSN 230
15 (S80), and accordingly the given GRPS session is cancelled and the radio
resource is recycled
At this time, if the PDP context delete request message is not used,
the SGSN 220 may cancel the given session by operating a timer (Mobile
Reachable Timer) after a predetermined time.
20 FIG. 3 is a flowchart for showing how a mobile station moves from a
non-3GPP network to a 3GPP network according to an exemplary
embodiment of the present invention.
As described with reference to FIG. 2, when the mobile station 100
11
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subscribed in the 3GPP network accesses the non-3GPP network 300, the
mobile station 100 receives a local address allocated by the non-3GPP
network 300 and the PDP address previously allocated from the IWG 250.
When the mobile station 100 returns to the 3GPP network, the
5 mobile station 100 starts an access to the SGSG 220 (S110) and the
mobile station 100 transmits a PDP context activation request message to
the SGSN 220 (S120).
The SGSN 220 transmits a PDP context generation request
message to the GGSN 230 (S130), and the GGSN 230 performs user
10 authentication and authorization by being interworked with the HLR/AAA
240 and then receives the PDP address previously allocated from the
HLR/AAA 240 (S140).
When the GGSN 230 has received the PDP address, it establishes
a tunnel 420 passing through the packet data network 400 by cooperating
15 with the IWG (S150). So as to establish a security-ensured tunnel, the
GGSN 230 obtains the tunnel establishment information from the HLR/AAA
240.
The GGSN 230 then transmits a PDP context generation response
message including the PDP address to the SGSN 220 (S160) and the
20 SSGN 220 transmits a PDP context activation response message including
the PDP address to the mobile station 100 (S170).
Though these steps, the mobile station 100 may accept a seamless
service even if it moves from the non-3GPP network 200 to the 3GPP
12
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WO 2007/024115 PCT/KR2006/003349
network.
According to the first exemplary embodiment of the present
invention as shown in FIG. 1, the IWG 250 is disposed in a 3GPP home
network. However, the IWG 250 may be disposed in a 3GPP visitor
5 network 500 as shown in FIG. 4. Elements in Fig. 4 that are the same or
similar to those illustrated in FIG. 1 have the same or similar reference
numerals. These elements may not be described for brevity of
description.
As shown in FIG. 4, the 3GPP visitor network 500 additionally
10 includes an AAA proxy 540 when the IWG 250 is disposed in the 3GPP
visitor network 500. The AAA proxy 540 performs user authentication and
authorization by interworking the IWG 250 with the HLR/AAA 240 of the
3GPP home network, receives the PDP address from the HLR/AAA 240,
and transmits the same to the IWG 250.
15 As described above, according to an exemplary embodiment of the
present invention, when the mobile station moves from the 3GPP network
to the non-3GPP network or it returns from the non-3GPP network to the
3GPP network, it may accept a seamless service by generating a universal
tunnel passing through the packet data network by means of the
20 interworking gateway and the GGSN.
The recording medium may include all types of recording media
that a computer can read, for example an HDD, a memory, a CD-ROM, a
magnetic tape, and a floppy disk, and it may also be realized in a carrier
13
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WO 2007/024115 PCT/KR2006/003349
wave (e.g., Internet communication) format.
While this invention has been described in connection with what is
presently considered to be practical exemplary embodiments, it is to be
understood that the invention is not limited to the disclosed embodiments,
5 but, on the contrary, is intended to cover various modifications and
equivalent arrangements included within the spirit and scope of the
appended claims.
As described above, according to an exemplary embodiment of the
present invention, the mobile station may accept a seamless service even
10 if it moves between the 3GPP network and the non-3GPP network.
15
20
14
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WHAT IS CLAIMED IS:
1. A service continuity apparatus for supporting service
continuity between a universal mobile communication system network and
5 a wireless local area network, the service continuity apparatus comprising:
a first node for transmitting a data packet to a mobile station in a
service area of the universal mobile communication system network;
a second node for performing a wireless gate function between the
first node and the packet data network and allocating a first address to the
10 mobile station through the first node so as to communicate data with the
packet data network; and
an interworking gateway for generating tunneling with the second
network through the packet data network and providing a seamless service
to the mobile station using the first address when the mobile station moves
15 from the universal mobile communication system network to the wireless
local area network.
2. The service continuity apparatus of claim 1, wherein the
interworking gateway forms a tunnel with the mobile station using the first
20 address.
3. The service continuity apparatus of claim 1, wherein the
interworking gateway generates tunneling with the second node through
15
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WO 2007/024115 PCT/KR2006/003349
the packet data network and provides a seamless service to the mobile
station using the first address when the mobile station returns from the
wireless local area network to the universal mobile communication system
network.
5
4. The service continuity apparatus of any one of claim 1 to
claim 3, wherein the first node is given as an SGSN (Serving GPRS
Support Node), and the second node is given as a GGSN (Gateway GPRS
Support Node).
10
5. The service continuity apparatus of claim 4, wherein the first
address is a PDP (Packet Data Protocol) address.
6. The service continuity apparatus of claim 5, wherein the
15 interworking gateway includes an interface for interworking with the packet
data network.
7. The service continuity apparatus of claim 4, wherein the
interworking gateway receives the first address allocated by the second
20 node from an authentication server.
8. The service continuity apparatus of claim 7, wherein the
interworking gateway is disposed in a visitor network of the universal
16
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WO 2007/024115 PCT/KR2006/003349
mobile communication system network, and the visitor network of the
universal mobile communication system includes a proxy authentication
server for performing user authentication and authorization by being
interworked with the authentication server.
5
9. A service continuity method for supporting service continuity
between a universal mobile communication system network and a wireless
local area network, the service continuity method comprising:
(a) a first node performing a wireless gate function of an
10
inter-packet data network allocating a first address for communicating data
with the packet data network to the mobile station accessed to the
universal mobile communication system network, and recording the
allocated first address on an authentication server;
(b) an interworking gateway receiving a tunnel establishment
15
request message from the mobile station having moved from the universal
mobile communication system network to the wireless local area network;
(c) the interworking gateway performing a user authentication and
authorization and receiving the recorded first address from the
authentication server by being interworked with the authentication server;
20
(d) the interworking gateway generating a tunneling with the first
node through the packet data network; and
(e) the interworking gateway transmitting a tunnel establishment
response message including the received first address to the mobile
17
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WO 2007/024115 PCT/KR2006/003349
station.
10. The service continuity method of claim 9, further
comprising:
5 the first node transmitting a PDP context delete request message to
a second node the second node being for transmitting a data packet to the
mobile station in a service area of the universal mobile communication
system network; and
the second node canceling a session by transmitting a PDP context
10 delete response message to the first node.
11. The service continuity method of claim 9 or claim 10,
wherein the first node is given as a GGSN (Gateway GPRS Support Node).
15 12. The service continuity method of claim 11, wherein the first
address is given as a PDP (Packet Data Protocol) address.
13. A service continuity method for supporting service continuity
between a universal mobile communication system network and a wireless
20 local area network, the service continuity method comprising:
(a) a first node for transmitting a packet in a service area of the
universal mobile communication system network receiving a PDP context
activation request message from a mobile station, the mobile station
18
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WO 2007/024115 PCT/KR2006/003349
having returned from the wireless local area network to the universal
mobile communication system network;
(b) the first node transmitting a PDP context generation request
message to a second node, the second node for performing a wireless
5 gate function to a node packet data network;
(c) the second node receiving a PDP address from an
authentication server, the PDP address being previously allocated to the
mobile station accessed to the universal mobile communication system
network so as to perform data communication with the packet data
10 network;
(d) the second node generating tunneling to an interworking
gateway through the packet data network; and
(e) the first node transmitting a PDP context activation response
message to the mobile station using the received PDP address.
15
14. The service continuity method of claim 13, wherein the first
node is given as an SGSN (Serving GPRS Support Node), and the second
node is given as a GGSN (Gateway GPRS Support Node).
19
NSN677-1002, Page 423
240
HLR/AAA
MG Mobile Station
320 300
Mobile Station
210
UTRAN SGSN GGSN
3GPP Network
220 230
Non-3GPP Network
250
1<
12
FIG.1
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200
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00Z
ILM
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NSN677-1002, Page 424
240 220 250 230 100 300
FIG.2
l ltZ
O/L
OO
Z O
M
Non 3GPP Network MS GGSN SGSN
PDP Address Allocation(S10)
Non 3GPP Network Access S20 and Local Address Allocation
Tunnel establishment Request(S30)
Authentication, Authorization( 40)
funnel Setup Procedure(S50)
Tunnel establishment Response(S60)
Delete PDP Context Request(S10)
Delete PDP Context Response(S80)
E
6t£
£00/9
00Z
ILM
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NSN677-1002, Page 425
100 220 240 250
MS SGSN IWG
2:1
GGSN HLR/AAA
FIG.3
l lt
ZO
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OZ
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6t£
£0
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Try Access(S110)
Activate PDP Context Request(S120)
Create PDP Context Request
Authentication, Authorization(S140)
PDP Address
Tunnel Setup Procedure(S150)
Create PDP Context Response(S160)
Activate PDP Context Response(S170)
NSN677-1002, Page 426
Mobile Station
320 300 500
290
3GPP Home Netwrok
220
SGSN
490
420
Non-3GPP Network
Mobile Station
100
12
l lt
ZO
/ LO
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NSN677-1002, Page 427
INTERNATIONAL SEARCH REPORT International application No. PCT/KR2006/003349
A. CLASSIFICATION OF SUBJECT MATTER
HO4L 12/46(2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC
B. FIELDS SEARCHED
Minimum documentation searched (classification system followed by classification symbols)
IPC H04L 12/46
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched orean Patents and applications for inventions since 1975 Korean Utility models and applications for Utility models since 1975
Electronic data base consulted during the intertnational search (name of data base and, where practicable, search terms used) cKIPASS(KIPO internal), IEEE Xplorc
C. DOCUMENTS CONSIDERED TO BE RELEVANT
Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US20040076179 A1(Stcphcn Kaminski) 22 April 2004 See the abstract and claims 1, 6
US20050080884 A1( KONINKLIJKE PHILIPS ELECTRONICS N.V.) 14 April 2005 See the abstract and claims 1, 17
W02005027563 Al( MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.) 24 March 2005 See the whole document
n Further documents are listed in the continuation of Box C. See patent family annex.
A
A
A
1-14
1-14
1-14
Special categories of cited documents: document defining the general state of the art which is not considered to be of particular relevance
"E" earlier application or patent but published on or after the international filing date document which may throw doubts on priority claim(s) or which is cited to establish the publication date of citation or other special reason (as specified) document referring to an oral disclosure, use, exhibition or other means
upu document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
uyu document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents,such combination being obvious to a person skilled in the art
11&11 document member of the same patent family
Date of the actual completion of the international search
28 NOVEMBER 2006 (28.11.2006)
Date of mailing of the international search report
28 NOVEMBER 2006 (28.11.2006) Name and mailing address of the ISA/KR
Korean Intellectual Property Office 920 Dunsan-dong, Sco-gu, Dacjcon 302-701, Republic of Korea
Facsimile No. 82-42-472-7140
Authorized officer
Kim, Yun Bae
Telephone No. 82-42-481-5766
Form PCT/ISA/210 (second sheet) (April 2005)
NSN677-1002, Page 428
INTERNATIONAL SEARCH REPORT Information on patent family members
International application No.
PCT/KR2006/003349
Patent document cited in search report
Publication date
Patent family member(s)
Publication date
US20040076179 Al 22.04.2004 EP01411670 Al 21.04.2004
US20050080884A1 14.04.2005 EP01472850 Al 03.11.2004 JP17516546 Al 02.06.2005 KR1020040074135 A 21.08.2004 W02003065682 Al 07.08.2003
W02005027563 Al 24.03.2005 GB2406022 Al 16.03.2005
Form PCT/ISA/210 (patent family annex) (April 2005)
NSN677-1002, Page 429
HETEROGENEOUS NETWORK AND METHOD FOR HANDOVER BETWEEN HETEROGENEOUS NETWORKS
Also published as:
EP1986461 (A1)
• CN1881919 (A)
• CN100488142 (C)
VI W02007093110 (A1)
Publication number: US2008304454 (A1)
Publication date: 2008-12-11 Inventor(s): ZHONG HUI [CN]; WANG SHU [CN]; LIU YUAN [CN] Applicant(s):
HUAWEI TECH CO LTD [ON] + Classification:
- international: H04W36/00; H04W36/14; 1-104W36/36 - European:
H0407/38H8; H0.4W36/00P2
Application number: US20080193594 20080818
Priority number(s): CN20061033773 20060218; W02007CN00174 20070117
Abstract of US 2008304454 (Al)
A heterogeneous network includes a terminal side and a network side. The network side includes an original PoA and handover candidate PoAs. The terminal side is used to select the handover candidate PoAs, initiate a media independent handover request, terminate a connection with the original PoA, and establish a connection with the handover candidate PoAs. The original PoA is used to terminate the connection with the terminal side according to the media independent handover request initiated by the terminal side. The handover candidate PoAs is used to establish the connection with the terminal side according to the media independent handover request initiated by the terminal side. A method for handover between heterogeneous networks initiated by the terminal side and the network side based on the 802.21 architecture is also provided, which improves the processing of the handover process.
Data supplied from the espacenet database — Worldwide
NSN677-1002, Page 430
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MIH njP )2A-0j1KRill*A PoA; b, 44191.1
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fil7, 11`71t144411 K'>4 VJ h fu AN, Miin71114Vii<PW4CAU, T -P14*
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200610033773.5
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PoA.
2, 4MA-ix.41*-4 1 hi-it0 , 4101A --T- A-12 -P-W a A-4 t4-*:
al *4'1911 MIH A it MIH kJ-JO PoA
a2. .4-4401 MIH Mir *likfifl-t0-ft- tit4t-W4MA.it PoA,
3, 4M 4A411*--* 2 fiA-i_ , 44+4114---T- t-irtz al -11-4*ti*:
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MIH Jj 0 RDA t
tILAtifol MIH I#IP f7 MIH tfiL*X--11,-.V4-itO PoA O'ft , MIH
ta4-8-0(.4tCfritO PoA Witt.
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14-1/Fq4 MIH 1i-Aa-Art#N-XA MIH MIH4-SAArt#4-001L4
4911 MIHF 41-A- MIH tgi70 PoA * R ;
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111 MIH I#J fir A_ MIH -Or/A*4-,
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7, 4MiXiq-A-4 6 4-1tiVI'>t-, bl -11-4*ti*:
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H-A-4 A .tit it*3tiXj 41 %J ff
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1 tit b3 L4:.i3;43' Alit. PoA X -W4MA *it*, PoA I.
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9, 414A4x411-A-4 1 ffriVit 44+431A-T--, 4 t b
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45h-lft,1-1-4-%41- A.it*),t0 *OA LO-A_gi1 PoA taig- tffl
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PoA;
b. 2 PoA frfi MIH l J /' XAVV*AA-W4A-4144-0:L41-0)4A5MitO
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NSN677-1002, Page 433
200610033773.5
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if9R. PoA PoA MIH P A-4/MAJT5i-It-A- MIH tit)) rj PoA *
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MIH PoA Witt;
a3, PoA efq*jk-AA MIH -0;43t4n116-ft-it*-±t.4-1--034Aq T PoA
-SA '12 t(-1 ti5C PoA 41,11, i1%±Eit.PhicIAI:VA-it*OAit.
PoA 'fitt
12, 4Mig-ix.4q -A-4 10 fi4-4M 4#4.11-0-1- ti" -"At a -11-4.
a1 A PoA 1 MIH ?A-1(9 MIH -Matlig..#7§Xit MIH tied7kA1A+,
MIH tER_4-51.67-ititw 41-* MIH fit:970 PoA
a2 A PoA MIH #1,1A-- rfq MIH 4t--,NAL#E--44fiAitO PoA *WA,
MIH PoA
a3, PoA V:(ACtit MIH -074&*14(flit -4-4±41,11-0343tq T PoA
itsni; 4*-Igt-it4t0 PoA ititA 14..t=1 Ph •Rit
PoA -Mt
13, 4R-4-49.411*-4 10 fifritf-i7 414411-At 4 47 tit b -X-4*
b1, iff P0A4M-1€r'- PoA MIH MIH ina497464-t.4+1-4147
firrit0-034kAit PoA iff4iVcr*Afp,fil
b2, A-1-41.0 -W45tRit. PoA ,(5) A(A4401M1H
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; 413 -tfrit b3 Alt PoA tajMLA' A_ -03-4sA4A iez(-4
).A AIX 5L-4--W4k.
NSN677-1002, Page 434
200610033773.5
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E ( k)44- XJC0 802.21 (4**-WCIL4-)-01-9.A.-
444 Ti2 ja M Wit t4X4A-*_t_ - J;AIA44-t,
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-W4k04FW_L- 4/L41, 4*A_ytilt-**-i2 Atiit-4-AM Nig-040g
Mg4s-it4t-Atl*-4A, gbta-w
, Iliztk*-444 f4-1)11 -tn4A4 0-4it-ty-0 ko
802.21 4C.` 'c#'] MkorE MIHF ( C4c.fc,*-0)45t.xh )
44c. MIHF 4k;t3utnit*OvAA0247-)/4-11-A4oRittm,-Azo0-ihtffli-thsisc#,
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NSN677-1002, Page 435
200610033773.5 F9]11.3 M2/111
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( MICS ) 41-,111- AL* ( ) 41=iM*4kA.A ( S
APs ) a kee t -b5414-* : Link_Up ) Link_Down (
PO-
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#..JJAA) MIH _Poll ( MIH ) MIH Switch ( MIN i ) MIH
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2. Tiff MIHF PoA -Vs\-XA fil4t/ft 41-0-4/A-A.0 jsR
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NSN677-1002, Page 436
200610033773.5 F9]11.3 M3/111
k3-1---kit-hkIrck-IPA;
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± fiL4-3Agh 'Kit PoA; n pt, 5A.1,4**t
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*A-, ffritipti *A- t 4-143 -143-44t:
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b. *A44'1 MIH kWAA-0/A-i-A---***4-wAsim-ito-074k
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412 4-siga1 -11-4*Lit:
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MIHF kit MIH tiO7A.g11.4+, MIHF
MIHF, 41,-4 MIH fi0Jot PoAP104 -4941ti, tl-419P1 MIH if)
MIH tiO3flt PoA
MIH If) fir MIH PoA 04-S- , MIH
,tLEFL*X-AAA-fin-itej PoA fit-ft to
NSN677-1002, Page 437
200610033773.5 11.3 M4/111
firritA PoA t4t- M ±4,t-A1141=4;i;ig *AV 41,4;izi)2.
QoS if) 'ft, 47;0
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MIHF A.T=141-* MIH fiU7 irt7
4-41111 MIH MIH -ft; PoA Witt, MIH it
tfirLA-NO,A.-04-410 PoA 'Mt
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PoA 4MA-ti(AMPI MIH l 1 P MIH -W4A4n46.4-t*+-4-41.601
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b2. Fir itO ALAtit.**-isurfj PoA 5t,A5Z,51-41A PoA FhT ,
MIH is A--& MIH -k)/4,A.-+; b3. Fir izEA +/AMC& PoA t.A114-, ALA MIH
t bl
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44i--„ti .47 t4-giAL4A4-034ix PoA iftt ; 1 PoA MIH
PoA ;
t b2 fiA-it0t31-4.4_4f3tiA.0 PoA ttA*-4-MVii- X1,9
PoA PoA ;
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NSN677-1002, Page 438
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PoA WitA;
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PoA
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a3, PoA 1610:4A.1t MIH -W4k4n4f3ift-it*-itli--003t 41t PoA
it41-SA LI" L46--Itit4ftitAiX PoA 0:At'itiliAt.i.iic:/ffisit.#0Ait
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NSN677-1002, Page 439
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fl) 4 YJIkitILAMMAA-0n45tirtiAtilli-11,
5 'I/ t 717 4t-491X7t0-W4CA,11
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T -4`41-444's- Affq 40 FR 11P4*it
NSN677-1002, Page 440
200610033773.5 is F9]11.3 M7/11X
+ 802.21ot-j-WAA,4i-cirY7 /011:kAii2da PI
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802.11 ) *iI HA ( OVJIP 934-A)-1 )
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NSN677-1002, Page 451
Name and mailing address of the IS.A/CN
The State Intellectual Property Office, the P.R.China 6 Xitucheng Rd., Jimen Bridge, Haidian District, Beijing, China 100088
Facsimile No. 86-10-62019451
Date of completion of this opinion
28 Oct. 2008 (28.10.2008)
Authorized aka
WU Shuang
Telephone No. (86-10)62411507
FOR FURTHER ACTION
see paragraph 2 below
Applicant's or agent's tile reference
080503
PATENT COOPERATION TREATY From the INTERNATIONesd, SEARCHING AUTHORITY
To:
0 100081 PCT
ee• 501/B.:Fortune Building:No.17 Daliushu Road,Haidian Distriet,Beijing,P.R.China.
BEIJING ZBSD PArENT&TRADEMARIC AGENT LTD.
WRITTEN OPINION OF"THE INTERNATIONAL SEARCHING AUTHORITY
(PCT Rule 43 his.1)
Date of mailing
(.:oyhnonzh/year) 20 Nov. 2008 (20.11.2008)
International application No.
PCT/CN2008/071842
International filing date (deryhnrtnthiyear)
31 Jul. 2008(31.07.2008)
Priority date (day/month/year)
07 Aug. 2007(07.08.2007) International Patent Classification (IPC) or both national classification and IPC
HO4Q 7/38 (2006.01)i
Applicant
HUAWEI TECHNOLOGIES CO., LTD. et al,
This opinion contains indications relating to the following items:
IZ Box No. I Basis of the opinion ❑ Box No.II Priority D Box No. al Non-establishment of opinion with regard to novelty, inventive step and industrial applicability
D Box No. IV Lack of unity of invention El Box No. V Reasoned statement under Rule 43 bis.1(a)(i)with regard to novelty, inventive step or industrial applicability;
citations and explanations supporting such statement D Box No.VI Certain documents cited O Box No. VII Certain defects in the international application ❑ Box No.VIII Certain observations on the international applicatior,
2. FURTHER ACTION
If a demand for international preliminary examination is made, this opinion will be considered to be a written opinion of the International Preliminary Examining Authority ("IPEA") except that this does not apply where the applicant chooses an Authority other than this one to be the IPEA and the chosen !PEA has notified the International Bureau under Rule 66.1 bis(b) that written opinions of this International Searching Authority will not be so considered.
If this opinion is, as provided above, considered to be a written opinion of the IPEA, the applicant is invited to submit to the IPEA a written reply together, where appropriate, with amendments, before the expiration of 3 months from the date of mailing of Form PCT/ISA/220 or before the expiration of 22 months from the priority date, whichever expires later.
For further options, see Form PCT/ISA/220.
3. For further details, see notes to Form PCTIISA/220.
Form PCT/ISA/237(cover sheet)(April 2007)
NSN677-1002, Page 452
WRITTEN OPINION OF THE INTERNATIONAL SEARCHING AUTHORITY
IInternational application No. PCT/CN2008/071842
Box No. I Basis of the opinion
1. With regard to the language, this opinion has been established on the basis of:
• the international application in the language in which it was filed O a translation of the international application into
furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
which is the language of a translation
❑ This opinion has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91(Rule 43bis(a))
With regard to any nucleotide and/or amino acid sequence disclosed in the international application and necessary to the claimed invention, this opinion has been established on the basis of :
type of material ❑ a sequence listing ❑ table(s) related to the sequence listing
b. format of material ❑ on paper ❑ in electronic form
c. time of filing furnishing ❑ contained in the international application as filed ❑ filed together with the international application in electronic form ❑ furnished subsequently to this Authority for the purposes of search
4. 0 In addition, in the case that more than one version or copy of a sequence listing andfor table relating thereto has been filed or furnished, the required statements that the information in the subsequent or additional copies is identical to that in the application as filed or does not go beyond the application as fried, as appropriate, were furnished.
5. Additional comments:
Form PCT/ISA/237(Box No. I) (April 2007)
NSN677-1002, Page 453
WRITTEN OPINION OF THE INTERNATIONAL SEARCHING AUTHORITY
International application No. PCT/CN2008/071842
Box No. V Reasoned statement under Rule 43eis.1(a)(i) with regard to novelty inventive step or industrial applicability; citations and explanations supporting such statement
Statement:
Novelty (N) Claims 1-33 YES
Claims None NO
Inventive step (IS) Claims 3-15, 18-22, 24-33 YES
Industrial applicability (IA)
Claims
Claims
I, 2, 16, 17. 23 NO
1-33 YES
Claims None NO
2. Citations and explanations Reference is made to the following documents: Dl: CN1878389A D2: W02006029663A1 D3: W02006088331A1. Di discloses a method and device for switching network service; D2 discloses a method for establishing connection in the heterogeneous network; D3 discloses a method and terminal for switching and releasing link connection in the multimode mobile terminal. Novelty (N) :
Each of the documents 01, D2 and D3 does not disclose all the features in any one of claims I, 16, 23, 25 and 30 completely, therefore claims 1, 16, 23, 25 and 30 meet the criteria set out in the KT Article :33(2), involve novelty.
Accordingly, the dependent claims 2-15 of claim 1, the dependent claims 17-22 of claim 16, the dependent claims 24 of claim 23, the dependent claims 26-29 of claim 25 and the dependent claims 31-33 of claim 30 meet the criteria set out in the PCT Article 33 (2), involve novelty. INVENTIVE STEP (IS) :
The document Di discloses a method for switching network service (see the description page 8, line 11.-page 14, line 14; figure 4), which includes that: a user terminal switches to a target network from a source network; a service switch control unit judges whether the network would be switched. DI does not disclose such a feature that. a network side unit separates the user terminal from the source network. However, this feature is well-known in the art. Based on Di and the well-known technology, the subject-matter of claim 1 is obvious to the skilled person in the art, so claim I does not meet the criteria set out in the PCT Article 33 (3), does not involve an inventive step.
The additional feature of claim 2 is well-known in the art, based on Di and the well-known technology, the subject-•matter of claim 2 which cites claim 1 is obvious to the skilled person in the art, therefore claim 2 does not meet the criteria set out in the PCT Article 33 (3), does not involve an inventive step.
The document Dl discloses a method for switching network service (see the description page 8, line 11--page 14, line 14; figure 4), which includes that: the user terminal requests to switch to the target network from the source network; the service switch control unit judges whether the network would be switched. Di does not disclose such a feature that the user terminal is separated from the source network, However, this feature is well-known in the art. Based on Dl and the well-known technology, the subject-matter of claim 16 is obvious to the skilled person in the art, so claim 1.6 does not meet the criteria set out in the Pa Article 33 (3), doss not involve an inventive step.
The additional feature of claim 17 is well-known in the art, based on DI and the well-known technology, the subject-matter of claim 17 which cites claim 16 is obvious to the skilled person in the art, therefore claim 17 does not meet the criteria set out in the PC,F Article 33 (3), does not involve an inventive step.
The document Di discloses a device for switching network service (see the description page 8, line li-page 14, line 14; figure 4), which includes that: the user terminal switches to the target network from a source network; the service switch control unit of the network side judges whether the network would be switched. Di does not disclose such a feature that the network side unit separates the user terminal from the source network. However, this feature is well-known in the art. Based on Dl and the well-known technology, the subject-matter of claim 23 is obvious to the skilled person in the art, so claim 23 does not meet the criteria set out in the PCT Article 33 (3), does not involve an inventive step.
• Foam PCT/ISAJ237(Box No. V) (April 2007)
NSN677-1002, Page 454
WRITTEN OPINION OF THE international application No.
INTERNATIONAL SEARCHING AUTHORITY
PCT/CN2008/071.842
Sup*Inental Box
In case the space in any of the preceding boxes is not sufficient.
Continuation of: No. V
Based on the documents Dl, D2 and D3, the subject—matters of claims 25 and 30 are not obvious to the skilled
person in the art, so these claims meet the criteria set out in the PCT Article 33 (3), involve inventive step-s.
Based on the documents D1, D2 and D3, the subject-•matters of claims 3--15, 18-22, 24, 26-29 and claims 31-33 are not obvious to the skilled per8on in the art; so these claims meet, the criteria set out in the PCT Article 33 (3)i involVe inventive steps. Industrial applicability
There is no reason to doubt the industrial applicability of the invention, claims 1-33 meet the criteria set out in the PCT Article 33 (4).
Form PCUISAI237(Supplemenral Box) (April 2007)
NSN677-1002, Page 455
Electronic Acknowledgement Receipt
EFS ID: 10606030
Application Number: 13169619
International Application Number:
Confirmation Number: 2286
Title of Invention: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
First Named Inventor/Applicant Name: Wenfu WU
Customer Number: 77399
Filer: John B. Conklin/Meghan Corbet
Filer Authorized By: John B. Conklin
Attorney Docket Number: HW708564
Receipt Date: 27-JUL-2011
Filing Date: 27-JUN-2011
Time Stamp: 11:35:27
Application Type: Utility under 35 USC 111(a)
Payment information:
Submitted with Payment no
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This Acknowledgement Receipt evidences receipt on the noted date by the USPTO of the indicated documents, characterized by the applicant, and including page counts, where applicable. It serves as evidence of receipt similar to a Post Card, as described in MPEP 503.
New Applications Under 35 U.S.C. 111 If a new application is being filed and the application includes the necessary components for a filing date (see 37 CFR 1.53(b)-(d) and MPEP 506), a Filing Receipt (37 CFR 1.54) will be issued in due course and the date shown on this Acknowledgement Receipt will establish the filing date of the application.
National Stage of an International Application under 35 U.S.C. 371 If a timely submission to enter the national stage of an international application is compliant with the conditions of 35 U.S.C. 371 and other applicable requirements a Form PCT/DO/E0/903 indicating acceptance of the application as a national stage submission under 35 U.S.C. 371 will be issued in addition to the Filing Receipt, in due course.
New International Application Filed with the USPTO as a Receiving Office If a new international application is being filed and the international application includes the necessary components for an international filing date (see PCT Article 11 and MPEP 1810), a Notification of the International Application Number and of the International Filing Date (Form PCT/RO/105) will be issued in due course, subject to prescriptions concerning national security, and the date shown on this Acknowledgement Receipt will establish the international filing date of the application.
NSN677-1002, Page 459
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
Patent Application No. 13/169,619
Confirmation No. 2286
Applicant: WU et al.
Filed: June 24, 2011
TC/AU: 2617
Examiner: NGUYEN, David Q
Docket No.: HW708564 (Client Reference No. 81356140US16)
Customer No.: 77399
Commissioner for Patents P.O. Box 1450 Alexandria, VA 22313-1450
INFORMATION DISCLOSURE STATEMENT
Pursuant to 37 CFR 1.97 and 1.98, the references listed on the enclosed Form PTO-1449 and/or Substitute Form PTO-1449 ("Form 1449") are submitted for consideration by the Examiner in the examination of the above-identified patent application.
The full consideration of the references in their entirety by the Examiner is respectfully requested and encouraged. Also, it is respectfully requested that the references be entered into the record of the present application and that the Examiner initial the appropriate area on the enclosed Form 1449, thereby indicating the Examiner's consideration of each of the references.
The submission of the references listed on the Form 1449 is for the purpose of providing a complete record and is not a concession that the references listed thereon are prior art to the invention claimed in the patent application. The right is expressly reserved to establish an invention date earlier than the above-identified filing date in order to remove any reference submitted herewith as prior art should it be deemed appropriate to do so.
Further, the submission of the references is not to be taken as a concession that any reference represents art that is relevant or analogous to the claimed invention. Accordingly, the right to argue that any reference is not properly within the scope of prior art relevant to an examination of the claims in the above-identified application is also expressly reserved.
The Information Disclosure Statement is being filed:
within any one of the following time periods: (a) within three months of the filing date of a national application other than a continued prosecution application under 37 CFR 1.53(d); (b) within three months of the date of entry of the national stage as set forth in 37 CFR 1.491 of an international application; (c) before the mailing date
Page 1 of 4
NSN677-1002, Page 460
Application No. 13/169,619 Information Disclosure Statement
of a first Office Action on the merits; or (d) before the mailing of a first Office Action after the filing of a request for continued examination under 37 CFR 1.114.
❑ Note: This submission includes the Statement under 37 CFR 1.704(d) (see "Statement under 37 CFR 1.704(d)" below), such that no reduction in patent term adjustment is warranted by the filing of this Information Disclosure Statement.
❑ after (a), (b), (c) or (d) above, but before the mailing date of a final action under 37 CFR 1.113, a Notice of Allowance under 37 CFR 1.311, or an action that otherwise closes prosecution in the application, and includes one of:
❑ the Statement under 37 CFR 1.97(e) (see "Statement under 37 CFR 1.97(e)" below).
❑ Note: This submission includes the Statement under 37 CFR 1.704(d) (see "Statement under 37 CFR 1.704(d)" below), such that no reduction in patent term adjustment is warranted by the filing of this Information Disclosure Statement.
— or —
❑ the fee of $180 set forth in 37 CFR 1.17(p) (see "Fees" below).
❑ on or after the mailing date of a final action under 37 CFR 1.113 or a Notice of Allowance under 37 CFR 1.311, or an action that otherwise closes prosecution in the application, and on or before payment of the issue fee, and includes the Statement under 37 CFR 1.97(e) (see "Statement under 37 CFR 1.97(e)" below), and the fee of $180 as set forth in 37 CFR 1.17(p) (see "Fees" below).
❑ on or after the mailing date of a Notice of Allowance under 37 CFR 1.311, and on or before payment of the issue fee, and within thirty days of receiving each item of information contained in the Information Disclosure Statement, and includes the Statement under 37 CFR 1.704(d) (see "Statement under 37 CFR 1.704(d)" below), and the fee of $180 as set forth in 37 CFR 1.17(p) (see "Fees" below). NOTE: This is for original applications except applications for a design patent, filed on or after May 29, 2000, wherein a paper containing only an Information Disclosure Statement in compliance with 37 CFR 1.97 and 1.98 is being filed.
Citation to Other Patent Applications
❑ The following U.S. patent applications are hereby brought to the attention of the Examiner. The U.S. patent applications claim subject matter that may be considered by the Examiner to be similar to the subject matter claimed in the above-identified patent application. Accordingly, these U.S. patent applications and/or the prosecution pertaining thereto may include information considered to be material to the prosecution of the above-identified patent application. Since the Examiner has electronic access to the prosecution histories of these U.S. patent applications, copies of prosecution materials therefrom are not provided herewith, but will be promptly provided if the Examiner so desires and requests same.
Page 2 of 4
NSN677-1002, Page 461
Application No. 13/169,619
Information Disclosure Statement
U.S. APPLICATIONS STATUS (check one)
U.S. APPLICATIONS U.S. FILING DATE Patented Pending Never Issued: Abandoned/Expired
1.
2. 3.
Copies of the References
• Copies of any U.S. patents and published patent applications that are listed on the accompanying Form 1449 are not enclosed herewith. Copies of any other references identified on the accompanying Form 1449 are enclosed herewith.
• For each reference not in the English language, attached is at least one of the following: (a) an English translation in whole or in part or (b) a concise statement of relevance in the form of, for example, an English language counterpart, an English-language abstract, or an English-language version of the search report or action by a foreign patent office in a counterpart foreign application indicating the degree of relevance found by the foreign office.
[El The references listed on the enclosed Form 1449 were previously identified in the parent application(s) of the present application, and copies of the references were furnished at that time. Accordingly, additional copies of the references are not submitted herewith, so as not to burden the file with duplicate copies of references. The Examiner is respectfully requested to carefully review the references in accordance with the requirements set out in the Manual of Patent Examining Procedure. In accordance with 37 CFR 1.98(d), the details of the parent application(s) relied upon for an earlier filing date under 35 USC 120 in which copies of the references were previously furnished are set out below:
U.S. APPLICATIONS STATUS (check one)
U.S. APPLICATIONS U.S. FILING DATE Patented Pending Abandoned
1. 12/479,216 June 5, 2009 X 2. 3.
Statement under 37 CFR 1.97(e)
❑ The undersigned hereby states that each item of information contained in the Information Disclosure Statement was first cited in any communication from a foreign patent office in a counterpart foreign patent application not more than three months prior to the filing of the Information Disclosure Statement.
❑ The undersigned hereby states that no item of information contained in the Information Disclosure Statement was cited in a communication from a foreign patent office in a counterpart foreign patent application, and, to the knowledge of the undersigned after making reasonable inquiry, no item of information contained in the Information Disclosure Statement was known to any individual designated in
Page 3 of 4
NSN677-1002, Page 462
Application No. 13/169,619 Information Disclosure Statement
37 CFR 1.56(c) more than three months prior to the filing of the Information Disclosure Statement.
Statement under 37 CFR 1.704(d)
❑ The undersigned hereby states that each item of information contained in the Information Disclosure Statement was first cited in any communication from a foreign patent office in a counterpart application and that this communication was not received by any individual designated in 37 CFR 1.56(c) more than thirty days prior to the filing of the Information Disclosure Statement.
Fees
El No fee is owed by the applicant(s). ❑ Charge Deposit Account No. 12-1216 in the amount of $180.00 (37 CFR 1.17(p)).
Authorization to Charge Additional Fees
• If any additional fees are owed in connection with this communication, please charge Deposit Account No. 12-1216.
Instructions as to Overpayment
• Credit Account No. 12-1216. ❑ Refund
/John B. Conklin/ John B. Conklin, Reg. No. 30,369 LEYDIG, VOIT & MAYER, LTD. Two Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
Date:
Page 4 of 4
NSN677-1002, Page 463
ART UNIT
EXAMINER
NGUYEN, DAVID Q
PAPER NUMBER
2617
DATE MAILED: 08/08/2011
77399 7590 08/08/2011
Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
UNITED STA I ES PA I ENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
P.O. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
NOTICE OF ALLOWANCE AND FEE(S) DUE
APPLICATION NO. FILING DATE
FIRST NAMED INVENTOR
ATTORNEY DOCKET NO. CONFIRMATION NO.
13/169,619 06/27/2011 Wenfu WU HW708564 2286
TITLE OF INVENTION: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
APPLN. TYPE
SMALL ENTITY
ISSUE FEE DUE I PUBLICATION FEE DUE PREV. PAID ISSUE FEE TOTAL FEE(S) DUE
DATE DUE
nonprovisional
NO $1510 $300 $0 $1810
11/08/2011
THE APPLICATION IDENTIFIED ABOVE HAS BEEN EXAMINED AND IS ALLOWED FOR ISSUANCE AS A PATENT. PROSECUTION ON THE MERITS IS CLOSED. THIS NOTICE OF ALLOWANCE IS NOT A GRANT OF PATENT RIGHTS. THIS APPLICATION IS SUBJECT TO WITHDRAWAL FROM ISSUE AT THE INITIATIVE OF THE OFFICE OR UPON PETITION BY THE APPLICANT. SEE 37 CFR 1.313 AND MPEP 1308.
THE ISSUE FEE AND PUBLICATION FEE (IF REQUIRED) MUST BE PAID WITHIN THREE MONTHS FROM THE MAILING DATE OF THIS NOTICE OR THIS APPLICATION SHALL BE REGARDED AS ABANDONED. THIS STATUTORY PERIOD CANNOT BE EXTENDED. SEE 35 U.S.C. 151. THE ISSUE FEE DUE INDICATED ABOVE DOES NOT REFLECT A CREDIT FOR ANY PREVIOUSLY PAID ISSUE FEE IN THIS APPLICATION. IF AN ISSUE FEE HAS PREVIOUSLY BEEN PAID IN THIS APPLICATION (AS SHOWN ABOVE), THE RETURN OF PART B OF THIS FORM WILL BE CONSIDERED A REQUEST TO REAPPLY THE PREVIOUSLY PAID ISSUE FEE TOWARD THE ISSUE FEE NOW DUE.
HOW TO REPLY TO THIS NOTICE:
I. Review the SMALL ENTITY status shown above.
If the SMALL ENTITY is shown as YES, verify your current SMALL ENTITY status:
A. If the status is the same, pay the TOTAL FEE(S) DUE shown above.
B. If the status above is to be removed, check box 5b on Part B -Fee(s) Transmittal and pay the PUBLICATION FEE (if required) and twice the amount of the ISSUE FEE shown above, or
If the SMALL ENTITY is shown as NO:
A. Pay TOTAL FEE(S) DUE shown above, or
B. If applicant claimed SMALL ENTITY status before, or is now claiming SMALL ENTITY status, check box 5a on Part B - Fee(s) Transmittal and pay the PUBLICATION FEE (if required) and 1/2 the ISSUE FEE shown above.
II. PART B - FEE(S) TRANSMITTAL, or its equivalent, must be completed and returned to the United States Patent and Trademark Office (USPTO) with your ISSUE FEE and PUBLICATION FEE (if required). If you are charging the fee(s) to your deposit account, section "4b" of Part B - Fee(s) Transmittal should be completed and an extra copy of the form should be submitted. If an equivalent of Part B is filed, a request to reapply a previously paid issue fee must be clearly made, and delays in processing may occur due to the difficulty in recognizing the paper as an equivalent of Part B.
III. All communications regarding this application must give the application number. Please direct all communications prior to issuance to Mail Stop ISSUE FEE unless advised to the contrary.
IMPORTANT REMINDER: Utility patents issuing on applications filed on or after Dec. 12, 1980 may require payment of maintenance fees. It is patentee's responsibility to ensure timely payment of maintenance fees when due.
Page 1 of 3 PTOL-85 (Rev. 02/11)
NSN677-1002, Page 464
PART B - FEE(S) TRANSMITTAL
Complete and send this form, together with applicable fee(s), to: Mail Mail Stop ISSUE FEE Commissioner for Patents P.O. Box 1450 Alexandria, Virginia 22313-1450
or Fax (571)-273-2885
INSTRUCTIONS: This form should be used for transmitting the ISSUE FEE and PUBLICATION FEE (if required). Blocks 1 through 5 should be completed where appropriate. All further correspondence including the Patent, advance orders and notification of maintenance fees will be mailed to the current correspondence address as indicated unless corrected below or directed otherwise in Block 1, by (a) specifying a new correspondence address; and/or (b) indicating a separate "FEE ADDRESS" for maintenance fee notifications.
CURRENT CORRESPONDENCE ADDRESS (Note: Use Block 1 for any change of address)
77399 7590 08/08/2011
Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
Note: A certificate of mailing can only be used for domestic mailings of the Fee(s) Transmittal. This certificate cannot be used for any other accompanying papers. Each additional paper, such as an assignment or formal drawing, must have its own certificate of mailing or transmission.
Certificate of Mailing or Transmission I hereby certify that this Fee(s) Transmittal is being deposited with the United States Postal Service with sufficient postage for first class mail in an envelope addressed to the Mail Stop ISSUE FEE address above, or being facsimile transmitted to the USPTO (571) 273-2885, on the date indicated below.
(Depositor's name)
(Signature)
(Date)
APPLICATION NO. FILING DATE
FIRST NAMED INVENTOR
ATTORNEY DOCKET NO. CONFIRMATION NO.
13/169,619 06/27/2011 Wenfu WU HW708564 2286
TITLE OF INVENTION: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
APPLN. TYPE
SMALL ENTITY
ISSUE FEE DUE I PUBLICATION FEE DUE PREY. PAID ISSUE FEE TOTAL FEE(S) DUE
DATE DUE
nonprovisional
NO
$1510
$300
$0
$1810
11/08/2011
EXAMINER
ART UNIT
CLASS-SUBCLASS
NGUYEN, DAVID Q
2617
370-331000
1. Change of correspondence address or indication of "Fee Address" (37 CFR 1.363).
❑ Change of correspondence address (or Change of Correspondence Address form PTO/SB/122) attached.
❑ "Fee Address" indication (or "Fee Address" Indication form PTO/SB/47; Rev 03-02 or more recent) attached. Use of a Customer Number is required.
2. For printing on the patent front page, list
(1) the names of up to 3 registered patent attorneys or agents OR, alternatively,
(2) the name of a single firm (having as a member a registered attorney or agent) and the names of up to 2 registered patent attorneys or agents. If no name is listed, no name will be printed.
1
2
3
3. ASSIGNEE NAME AND RESIDENCE DATA TO BE PRINTED ON THE PATENT (print or type)
PLEASE NOTE: Unless an assignee is identified below, no assignee data will appear on the patent. If an assignee is identified below, the document has been filed for recordation as set forth in 37 CFR 3.11. Completion of this form is NOT a substitute for filing an assignment.
(A) NAME OF ASSIGNEE (B) RESIDENCE: (CITY and STATE OR COUNTRY)
Please check the appropriate assignee category or categories (will not be printed on the patent) : ❑ Individual ❑ Corporation or other private group entity ❑ Government
4a. The following fee(s) are submitted:
❑ Issue Fee
❑ Publication Fee (No small entity discount permitted)
❑ Advance Order - # of Copies
4b. Payment of Fee(s): (Please first reapply any previously paid issue fee shown above)
❑ A check is enclosed.
❑ Payment by credit card. Form PTO-2038 is attached.
❑ The Director is hereby authorized to charge the required fee(s), any deficiency, or credit any overpayment, to Deposit Account Number (enclose an extra copy of this form).
5. Change in Entity Status (from status indicated above)
❑ a. Applicant claims SMALL ENTITY status. See 37 CFR 1.27. ❑ b. Applicant is no longer claiming SMALL ENTITY status. See 37 CFR 1.27(g)(2).
NOTE: The Issue Fee and Publication Fee (if required) will not be accepted from anyone other than the applicant; a registered attorney or agent; or the assignee or other party in interest as shown by the records of the United States Patent and Trademark Office.
Authorized Signature Date
Typed or printed name Registration No.
This collection of information is required by 37 CFR 1.311. The information is required to obtain or retain a benefit by the public which is to file (and by the USPTO to process) an application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.14. This collection is estimated to take 12 minutes to complete, including gathering, preparing, and submitting the completed application form to the USPTO. Time will vary depending upon the individual case. Any comments on the amount of time you require to complete this form and/or suggestions for reducing this burden, should be sent to the Chief Information Officer, U.S. Patent and Trademark Office, U.S. Department of Commerce, P.O. Box 1450, Alexandria, Virginia 22313-1450. DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS. SEND TO: Commissioner for Patents, P.O. Box 1450, Alexandria, Virginia 22313-1450. Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it displays a valid OMB control number.
PTOL-85 (Rev. 02/11) Approved for use through 08/31/2013. OMB 0651-0033 U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
NSN677-1002, Page 465
ART UNIT
EXAMINER
NGUYEN, DAVID Q
PAPER NUMBER
2617
DATE MAILED: 08/08/2011
77399 7590 08/08/2011
Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
UNITED STA IES PA PENT AND TRADEMARK OEEICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
P.O. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
APPLICATION NO. FILING DATE
FIRST NAMED INVENTOR
ATTORNEY DOCKET NO. CONFIRMATION NO.
13/169,619
06/27/2011
Wenfu WU
HW708564
2286
Determination of Patent Term Adjustment under 35 U.S.C. 154 (b) (application filed on or after May 29, 2000)
The Patent Term Adjustment to date is 0 day(s). If the issue fee is paid on the date that is three months after the mailing date of this notice and the patent issues on the Tuesday before the date that is 28 weeks (six and a half months) after the mailing date of this notice, the Patent Term Adjustment will be 0 day(s).
If a Continued Prosecution Application (CPA) was filed in the above-identified application, the filing date that determines Patent Term Adjustment is the filing date of the most recent CPA.
Applicant will be able to obtain more detailed information by accessing the Patent Application Information Retrieval (PAIR) WEB site (http://pair.uspto.gov).
Any questions regarding the Patent Term Extension or Adjustment determination should be directed to the Office of Patent Legal Administration at (571)-272-7702. Questions relating to issue and publication fee payments should be directed to the Customer Service Center of the Office of Patent Publication at 1-(888)-786-0101 or (571)-272-4200.
Page 3 of 3 PTOL-85 (Rev. 02/11)
NSN677-1002, Page 466
Privacy Act Statement
The Privacy Act of 1974 (P.L. 93-579) requires that you be given certain information in connection with your submission of the attached form related to a patent application or patent. Accordingly, pursuant to the requirements of the Act, please be advised that: (1) the general authority for the collection of this information is 35 U.S.C. 2(b)(2); (2) furnishing of the information solicited is voluntary; and (3) the principal purpose for which the information is used by the U.S. Patent and Trademark Office is to process and/or examine your submission related to a patent application or patent. If you do not furnish the requested information, the U.S. Patent and Trademark Office may not be able to process and/or examine your submission, which may result in termination of proceedings or abandonment of the application or expiration of the patent.
The information provided by you in this form will be subject to the following routine uses:
1. The information on this form will be treated confidentially to the extent allowed under the Freedom of Information Act (5 U.S.C. 552) and the Privacy Act (5 U.S.0 552a). Records from this system of records may be disclosed to the Department of Justice to determine whether disclosure of these records is required by the Freedom of Information Act.
2. A record from this system of records may be disclosed, as a routine use, in the course of presenting evidence to a court, magistrate, or administrative tribunal, including disclosures to opposing counsel in the course of settlement negotiations.
3. A record in this system of records may be disclosed, as a routine use, to a Member of Congress submitting a request involving an individual, to whom the record pertains, when the individual has requested assistance from the Member with respect to the subject matter of the record.
4. A record in this system of records may be disclosed, as a routine use, to a contractor of the Agency having need for the information in order to perform a contract. Recipients of information shall be required to comply with the requirements of the Privacy Act of 1974, as amended, pursuant to 5 U.S.C. 552a(m).
5. A record related to an International Application filed under the Patent Cooperation Treaty in this system of records may be disclosed, as a routine use, to the International Bureau of the World Intellectual Property Organization, pursuant to the Patent Cooperation Treaty.
6. A record in this system of records may be disclosed, as a routine use, to another federal agency for purposes of National Security review (35 U.S.C. 181) and for review pursuant to the Atomic Energy Act (42 U.S.C. 218(c)).
7. A record from this system of records may be disclosed, as a routine use, to the Administrator, General Services, or his/her designee, during an inspection of records conducted by GSA as part of that agency's responsibility to recommend improvements in records management practices and programs, under authority of 44 U.S.C. 2904 and 2906. Such disclosure shall be made in accordance with the GSA regulations governing inspection of records for this purpose, and any other relevant (i.e., GSA or Commerce) directive. Such disclosure shall not be used to make determinations about individuals.
8. A record from this system of records may be disclosed, as a routine use, to the public after either publication of the application pursuant to 35 U.S.C. 122(b) or issuance of a patent pursuant to 35 U.S.C. 151. Further, a record may be disclosed, subject to the limitations of 37 CFR 1.14, as a routine use, to the public if the record was filed in an application which became abandoned or in which the proceedings were terminated and which application is referenced by either a published application, an application open to public inspection or an issued patent.
9. A record from this system of records may be disclosed, as a routine use, to a Federal, State, or local law enforcement agency, if the USPTO becomes aware of a violation or potential violation of law or regulation.
NSN677-1002, Page 467
Notice of Allowability
Application No.
13/169,619
Applicant(s)
WU ET AL. Examiner
DAVID Q. NGUYEN
Art Unit
2617
-- The MAILING DATE of this communication appears All claims being allowable, PROSECUTION ON THE MERITS IS herewith (or previously mailed), a Notice of Allowance (PTOL-85) NOTICE OF ALLOWABILITY IS NOT A GRANT OF PATENT RIGHTS. of the Office or upon petition by the applicant. See 37 CFR 1.313
on the (OR REMAINS) or other
and MPEP
been received.
been received
of this
Note reason(s)
be submitted.
Patent
Amendment
header
FOR THE
This
35 U.S.C.
cover sheet with the correspondence address-- CLOSED in this application. If not included
appropriate communication will be mailed in due course. THIS application is subject to withdrawal from issue at the initiative
1308.
§ 119(a)-(d) or (f).
in Application No. .
1. @ This communication is responsive to 06/27/2011.
2. @ The allowed claim(s) is/are 1-14.
3. @ Acknowledgment is made of a claim for foreign priority under
a) A All b) ■ Some*c) ■ None of the:
1. A Certified copies of the priority documents have
2. ■ Certified copies of the priority documents have
of this communication
should
of BIOLOGICAL
have been received in this national stage application from the
to file a reply complying with the requirements application.
the attached EXAMINER'S AMENDMENT or NOTICE OF why the oath or declaration is deficient.
Drawing Review ( PTO-948) attached
/ Comment or in the Office action of
be written on the drawings in the front (not the back) of according to 37 CFR 1.121(d).
MATERIAL must be submitted. Note the DEPOSIT OF BIOLOGICAL MATERIAL.
3. ■ Copies of the certified copies of the priority documents
International Bureau (PCT Rule 17.2(a)).
* Certified copies not received: .
Applicant has THREE MONTHS FROM THE "MAILING DATE" noted below. Failure to timely comply will result in ABANDONMENT THIS THREE-MONTH PERIOD IS NOT EXTENDABLE.
4. ❑ A SUBSTITUTE OATH OR DECLARATION must be submitted. INFORMAL PATENT APPLICATION (PTO-152) which gives
5. ❑ CORRECTED DRAWINGS ( as "replacement sheets") must
(a) ■ including changes required by the Notice of Draftsperson's
1) ■ hereto or 2) ■ to Paper No./Mail Date .
(b) ■ including changes required by the attached Examiner's
Paper No./Mail Date .
Identifying indicia such as the application number (see 37 CFR 1.84(c)) each sheet. Replacement sheet(s) should be labeled as such in the
6. ❑ DEPOSIT OF and/or INFORMATION about the deposit attached Examiner's comment regarding REQUIREMENT
Attachment(s) 1. A Notice of References Cited (PTO-892) 5. ■ Notice of Informal Patent Application
2. ■ Notice of Draftperson's Patent Drawing Review (PTO-948) 6. Interview Summary (PTO-413), 08/02/2011 . Paper No./Mail Date
3. A Information Disclosure Statements (PTO/SB/08), 7. Examiner's Amendment/Comment Paper No./Mail Date
4. ■ Examiners Comment Regarding Requirement for Deposit 8. Examiner's Statement of Reasons for Allowance of Biological Material
9. ■ Other .
/DAVID Q NGUYEN/ Primary Examiner, Art Unit 2617
U.S. Patent and Trademark Office
PTOL-37 (Rev. 08-06)
Notice of Allowability Part of Paper No./Mail Date 20110803
NSN677-1002, Page 468
Interview Summary
Application No.
13/169,619
Applicant(s)
WU ET AL.
Examiner
DAVID Q. NGUYEN
Art Unit
2617
All participants (applicant, applicant's representative, PTO personnel):
(1) DAVID Q. NGUYEN. (3)_.
(2) John B. Conklin. (4)
Date of Interview: 02 August 2011.
Type: a)
Exhibit shown If Yes,
c)❑
brief
Telephonic b)❑ Video Conference Personal [copy given to: 1)❑ applicant 2)❑ applicant's representative]
or demonstration conducted: d)❑ Yes e)❑ No. description: .
Claim(s) discussed: All claims.
Identification of prior art discussed: .
Agreement with respect to the claims f)r
Substance of Interview including description reached, or any other comments: Applicant
was reached. g)❑ was not reached. h)❑ N/A.
of the general nature of what was agreed to if an agreement was has amended application as indicated in Examiner's Amendment.
(A fuller description, if necessary, and a copy of the amendments which the examiner agreed would render the claims allowable, if available, must be attached. Also, where no copy of the amendments that would render the claims allowable is available, a summary thereof must be attached.)
THE FORMAL WRITTEN REPLY TO THE LAST OFFICE ACTION MUST INCLUDE THE SUBSTANCE OF THE INTERVIEW. (See MPEP Section 713.04). If a reply to the last Office action has already been filed, APPLICANT IS GIVEN A NON-EXTENDABLE PERIOD OF THE LONGER OF ONE MONTH OR THIRTY DAYS FROM THIS INTERVIEW DATE, OR THE MAILING DATE OF THIS INTERVIEW SUMMARY FORM, WHICHEVER IS LATER, TO FILE A STATEMENT OF THE SUBSTANCE OF THE INTERVIEW. See Summary of Record of Interview requirements on reverse side or on attached sheet.
/DAVID Q NGUYEN/ Primary Examiner, Art Unit 2617
U.S. Patent and Trademark Office
PTOL-413 (Rev. 04-03)
Interview Summary
Paper No. 20110803
NSN677-1002, Page 469
Summary of Record of Interview Requirements
Manual of Patent Examining Procedure (MPEP), Section 713.04, Substance of Interview Must be Made of Record A complete written statement as to the substance of any face-to-face, video conference, or telephone interview with regard to an application must be made of record in the application whether or not an agreement with the examiner was reached at the interview.
Title 37 Code of Federal Regulations (CFR) § 1.133 Interviews Paragraph (b)
In every instance where reconsideration is requested in view of an interview with an examiner, a complete written statement of the reasons presented at the interview as warranting favorable action must be filed by the applicant. An interview does not remove the necessity for reply to Office action as specified in §§ 1.111, 1.135. (35 U.S.C. 132)
37 CFR §1.2 Business to be transacted in writing. All business with the Patent or Trademark Office should be transacted in writing. The personal attendance of applicants or their attorneys or agents at the Patent and Trademark Office is unnecessary. The action of the Patent and Trademark Office will be based exclusively on the written record in the Office. No attention will be paid to any alleged oral promise, stipulation, or understanding in relation to which there is disagreement or doubt.
The action of the Patent and Trademark Office cannot be based exclusively on the written record in the Office if that record is itself incomplete through the failure to record the substance of interviews.
It is the responsibility of the applicant or the attorney or agent to make the substance of an interview of record in the application file, unless the examiner indicates he or she will do so. It is the examiner's responsibility to see that such a record is made and to correct material inaccuracies which bear directly on the question of patentability.
Examiners must complete an Interview Summary Form for each interview held where a matter of substance has been discussed during the interview by checking the appropriate boxes and filling in the blanks. Discussions regarding only procedural matters, directed solely to restriction requirements for which interview recordation is otherwise provided for in Section 812.01 of the Manual of Patent Examining Procedure, or pointing out typographical errors or unreadable script in Office actions or the like, are excluded from the interview recordation procedures below. Where the substance of an interview is completely recorded in an Examiners Amendment, no separate Interview Summary Record is required.
The Interview Summary Form shall be given an appropriate Paper No., placed in the right hand portion of the file, and listed on the "Contents" section of the file wrapper. In a personal interview, a duplicate of the Form is given to the applicant (or attorney or agent) at the conclusion of the interview. In the case of a telephone or video-conference interview, the copy is mailed to the applicant's correspondence address either with or prior to the next official communication. If additional correspondence from the examiner is not likely before an allowance or if other circumstances dictate, the Form should be mailed promptly after the interview rather than with the next official communication.
The Form provides for recordation of the following information: —Application Number (Series Code and Serial Number) —Name of applicant —Name of examiner — Date of interview —Type of interview (telephonic, video-conference, or personal) —Name of participant(s) (applicant, attorney or agent, examiner, other PTO personnel, etc.) —An indication whether or not an exhibit was shown or a demonstration conducted —An identification of the specific prior art discussed — An indication whether an agreement was reached and if so, a description of the general nature of the agreement (may be by
attachment of a copy of amendments or claims agreed as being allowable). Note: Agreement as to allowability is tentative and does not restrict further action by the examiner to the contrary.
—The signature of the examiner who conducted the interview (if Form is not an attachment to a signed Office action)
It is desirable that the examiner orally remind the applicant of his or her obligation to record the substance of the interview of each case. It should be noted, however, that the Interview Summary Form will not normally be considered a complete and proper recordation of the interview unless it includes, or is supplemented by the applicant or the examiner to include, all of the applicable items required below concerning the substance of the interview.
A complete and proper recordation of the substance of any interview should include at least the following applicable items: 1) A brief description of the nature of any exhibit shown or any demonstration conducted, 2) an identification of the claims discussed, 3) an identification of the specific prior art discussed, 4) an identification of the principal proposed amendments of a substantive nature discussed, unless these are already described on the
Interview Summary Form completed by the Examiner, 5) a brief identification of the general thrust of the principal arguments presented to the examiner,
(The identification of arguments need not be lengthy or elaborate. A verbatim or highly detailed description of the arguments is not required. The identification of the arguments is sufficient if the general nature or thrust of the principal arguments made to the examiner can be understood in the context of the application file. Of course, the applicant may desire to emphasize and fully describe those arguments which he or she feels were or might be persuasive to the examiner.)
6) a general indication of any other pertinent matters discussed, and 7) if appropriate, the general results or outcome of the interview unless already described in the Interview Summary Form completed by
the examiner. Examiners are expected to carefully review the applicant's record of the substance of an interview. If the record is not complete and
accurate, the examiner will give the applicant an extendable one month time period to correct the record.
Examiner to Check for Accuracy
If the claims are allowable for other reasons of record, the examiner should send a letter setting forth the examiner's version of the statement attributed to him or her. If the record is complete and accurate, the examiner should place the indication, "Interview Record OK" on the paper recording the substance of the interview along with the date and the examiner's initials.
NSN677-1002, Page 470
Application/Control Number: 13/169,619 Page 2
Art Unit: 2617
DETAILED ACTION
EXAMINER'S AMENDMENT
1. An examiner's amendment to the record appears below. Should the changes and/or
additions be unacceptable to applicant, an amendment may be filed as provided by 37 CFR
1.312. To ensure consideration of such an amendment, it MUST be submitted no later than the
payment of the issue fee.
2. Authorization for this examiner's amendment was given in a telephone interview with
John B. Conklin on 08/02/2011.
3. The application has been amended as follow:
8 (Currently Amended). A mobility management entity, configured to: receive a delete
bearer request sent by a serving gateway (GW) of a 3GPP network when a handover from
the 3GPP network to a non-3GPP network occurs, wherein the delete bearer request
carries a cause information element (IE) which indicates a user equipment handovers
from the 3GPP network to the non-3GPP network;
delete bearer resources of the user equipment; and
detach the UE from the 3GPP network when all the bearer resources of the UE are
deleted.
9 (Currently Amended). The mobility management entity according to claim 8, wherein
the cause IE is set to "UE's accessing RAT changed from a 3GPP network to a non-3GPP
network".
10 (Currently Amended). The mobility management entity according to claim 9, wherein
the delete bearer request is sent from a packet data network gateway to the mobility
NSN677-1002, Page 471
Application/Control Number: 13/169,619 Page 3
Art Unit: 2617
management entity via the serving gateway, wherein the cause IE is set to "UE's
accessing RAT changed from a 3GPP network to a non-3GPP network" by the packet
data network gateway.
11 (Currently Amended). The mobility management entity according to claim 8, wherein
the mobility management entity is configured to detach the UE from the 3GPP network
without sending a detach request message to the UE.
12 (Currently Amended). The mobility management entity according to claim 8, wherein
the mobility management entity is configured to detach the UE from the 3GPP network if
a terminal capability of the UE is single radio capability.
13 (Currently Amended). The mobility management entity according to claim 8, wherein
the mobility management entity is configured to detach the UE from the 3GPP network if
access policy information of an operator is single radio access.
14 (Currently Amended). The mobility management entity according to claim 8, wherein
the mobility management entity is configured to detach the UE from the 3GPP network if
a terminal capability of the UE is dual radio capability and access policy information of
an operator is single radio access; or if the terminal capability of the UE is single radio
capability and the access policy information of the operator is dual radio access; or if the
terminal capability of the UE is the single radio capability and the access policy
information of the operator is the single radio access.
Allowable Subject Matter
4. Claims 1-14 are allowed.
5. The following is an examiner's statement of reasons for allowance:
NSN677-1002, Page 472
Application/Control Number: 13/169,619 Page 4
Art Unit: 2617
Regarding independent claims 1 and 8, Savolainen et al. (US 2009/0232022 Al);
Vesterinen et al. (US 2008/0188223 Al); Faccin (US 2008/0320149 Al); and Zao et al. (US
2009/0238207 Al) all disclose a mobility management entity, configured to: receive a delete
bearer request sent by a serving gateway (GW) of a 3GPP network when a handover from the
3GPP network to a non-3GPP network occurs, wherein the delete bearer request carries a cause
information element (IE) which indicates a user equipment handovers from the 3GPP network to
the non-3GPP network; the MME sends bearer request message to the gateway servers to delete
bearer resources; the serving gateway deletes bearer resources of the user equipment. However,
the above prior arts of record fail to disclose or render obvious deleting, by the MME, bearer
resources of the user equipment; and detaching, by the MME, the UE from the 3GPP network
when all the bearer resources of the UE are deleted as specified in the claims. Therefore, they are
allowable
Claims 2-7 depend on claim 1. Therefore, they are allowable.
Claims 9-14 depend on claim 8. Therefore, they are allowable.
6. Any comments considered necessary by applicant must be submitted no later than the
payment of the issue fee and, to avoid processing delays, should preferably accompany the issue
fee. Such submissions should be clearly labeled "Comments on Statement of Reasons for
Allowance."
Conclusion
7. Any inquiry concerning this communication or earlier communications from the
examiner should be directed to DAVID Q. NGUYEN whose telephone number is (571)272-
7844. The examiner can normally be reached on 8:30AM-5:30PM.
NSN677-1002, Page 473
Application/Control Number: 13/169,619 Page 5
Art Unit: 2617
If attempts to reach the examiner by telephone are unsuccessful, the examiner's
supervisor, Jinsong Hu can be reached on (571)272-3965. The fax phone number for the
organization where this application or proceeding is assigned is 571-273-8300.
Information regarding the status of an application may be obtained from the Patent
Application Information Retrieval (PAIR) system. Status information for published applications
may be obtained from either Private PAIR or Public PAIR. Status information for unpublished
applications is available through Private PAIR only. For more information about the PAIR
system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR
system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would
like assistance from a USPTO Customer Service Representative or access to the automated
information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000.
/DAVID Q NGUYEN/ Primary Examiner, Art Unit 2617
NSN677-1002, Page 474
Notice of References Cited
Application/Control No.
13/169,619
Applicant(s)/Patent Under Reexamination WU ET AL.
Examiner
DAVID Q. NGUYEN
Art Unit
2617 Page 1 of 1
U.S. PATENT DOCUMENTS
* Document Number Country Code-Number-Kind Code
Date MM-YYYY Name Classification
* A US-2009/0238207 09-2009 Zhao et al. 370/468
* B US-2008/0320149 12-2008 Faccin, Stefano 709/228
* C US-2008/0188223 08-2008 Vesterinen et al. 455/436
* D US-2009/0232022 09-2009 Savolainen et al. 370/254
E US-
F US-
G US-
H US-
I US-
j US-
K US-
L US-
M US-
FOREIGN PATENT DOCUMENTS
* Document Number Country Code-Number-Kind Code
Date MM-YYYY Country Name Classification
N
0
P
Q
R
S
T
NON-PATENT DOCUMENTS
* Include as applicable: Author, Title Date, Publisher, Edition or Volume, Pertinent Pages)
U
V
W
X
*A copy of th's reference is not being furnished with this Office action. (See MPEP § 707.05(a).) Dates in MM YYYY format are publication dates. Classifications may be US or foreign.
U.S. Patent and Trademark Office
PTO-892 (Rev. 01-2001)
Notice of References Cited
Part of Paper No. 20110803
NSN677-1002, Page 475
111
Index
111 1
of
11111111
Claims
111 11
Application/Control No.
13169619
Applicant(s)/Patent Under Reexamination
WU ET AL.
Examiner
DAVID Q NGUYEN
Art Unit
2617
A Appeal
0 Objected
N Non-Elected
Interference
Rejected
Cancelled
Allowed
Restricted
in the same order as presented by applicant R.1.47 • Claims renumbered • CPA • T.D. •
CLAIM DATE
Final Original 08/03/2011
1 1 =
2 2 =
3 3 =
4 4 =
5 5 =
6 6 =
7 7 =
8 8 =
9 9 =
10 10 =
11 11 =
12 12 =
13 13 =
14 14 =
U.S. Patent and Trademark Office Part of Paper No.: 20110803
NSN677-1002, Page 476
Issue
111 111 1 11111111
Classification
111 11
Application/Control No.
13169619
Applicant(s)/Patent Under Reexamination
WU ET AL.
Examiner
DAVID Q NGUYEN
Art Unit
2617
ORIGINAL INTERNATIONAL CLASSIFICATION
CLASS SUBCLASS CLAIMED NON-CLAIMED
370 331 H 0 4 W 36 / 00 (2009.01.01)
CROSS REFERENCE(S)
CLASS SUBCLASS (ONE SUBCLASS PER BLOCK)
370 468 254 328 352
455 422.1 435 436
Claims renumbered in the same order as presented by applicant CPA M M • T.D. M R.1.47
Final Original Final Original Final Original Final Original Final Original Final Original Final Original Final Original
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
NONE
(Assistant Examiner) (Date)
Total Claims Allowed:
14
/DAVID Q NGUYEN/ Primary Examiner.Art Unit 2617
(Primary Examiner)
08/03/2011
(Date)
O.G. Print Claim(s)
1
O.G. Print Figure
1
U.S. Patent and Trademark Office
Part of Paper No. 20110803
NSN677-1002, Page 477
111 111 1
Search
11111111
Notes
111 11
Application/Control No.
13169619
Applicant(s)/Patent Under Reexamination
WU ET AL.
Examiner
DAVID Q NGUYEN
Art Unit
2617
SEARCHED
Class Subclass Date Examiner 370 331 08/03/2011 DN 370 328 08/03/2011 DN 370 352 08/03/2011 DN 370 468 08/03/2011 DN 455 422.1 08/03/2011 DN 455 436 08/03/2011 DN 370 254 08/03/2011 DN
SEARCH NOTES
Search Notes Date Examiner Text search
08/03/2011 DN
INTERFERENCE SEARCH
Class Subclass Date Examiner Text search
08/03/2011 DN
/DAVID Q NGUYEN/ Primary Examiner.Art Unit 2617
U.S. Patent and Trademark Office
Part of Paper No.. 20110803
NSN677-1002, Page 478
EAST Search History
EAST Search History
EAST Search History (Prior Art)
Ref #
Hits Search Query DBs Default Operator
Plurals Time Stamp
L1 4 (("20090286527") or ("20060153124") or ("20060146803") or ("20100135245")).PN.
US-PGPUB; USPAT; USOCR
OR OFF 2011/08/03 17:52
S1 1 ("20090097454").PN. USPAT; USOCR
US-PGPUB; OR OFF 2011/08/02 14:18
S2
—:
estimat$3 with (mobile adj phone mobile adj device wireless adj device wireless adj phone wireless adj equipment) with cell with load
US-PGPUB; USPAT; USOCR; FPRS; EPO; JPO; DERWENT; IBMTDB
OR OFF 2011/08/02 14:50
S3 S3 0 count$3 with (mobile adj phone mobile adj device wireless adj device wireless adj phone wireless adj equipment user adj terminal) with number with message same load IBM TDB
US-PGPUB; USPAT; USOCR; FPRS; EPO; JPO; DERWENT;
OR OFF 2011/08/02 14:53
S4 count$3 with (mobile adj phone mobile adj device wireless adj device wireless adj phone wireless adj equipment user adj terminal) with number with message
US-PGPUB; USPAT; USOCR; FPRS; EPO; JPO; DERWENT; I BM_TDB
OR OFF 2011/08/02 14:53
S5 S5 3 estimat$3 with (mobile adj phone mobile adj device wireless adj device wireless adj phone wireless adj equipment user adj terminal) with cell with load IBM TDB
US-PGPUB; USPAT; USOCR; FPRS; EPO; JPO; DERWENT;
OR OFF 2011/08/02 14:53
S6
...._ ,.:
16determin$3 with (mobile adj phone mobile adj device wireless adj device wireless adj phone wireless adj equipment user adj terminal) with cell with load
US-PGPUB; USPAT; USOCR; FPRS; EPO; JPO; DERWENT; IBM_TDB
OR OFF 2011/08/02 14:54
S7 S7 1 count$3 with (mobile adj phone mobile adj device wireless adj device wireless adj phone wireless adj equipment user adj terminal) with cell with load IBM TDB
US-PGPUB; USPAT; USOCR; FPRS; EPO; JPO; DERWENT;
OR OFF 2011/08/02 15:12
S8 53 (MME MMNE) same (delet$3 eras$3 disconnect$3) same resource
US-PGPUB; USPAT; USOCR; FPRS; EPO; JPO; DERWENT; I BM_TDB
OR ON 2011/08/03 12:53
S9 S9 22 (MME MMNE) same (detach$3) same resource
US-PGPUB; USPAT; USOCR; FPRS; EPO;
OR ON 2011/08/03 12:54
file:///Cl/Users/dnguyen17/Documents/e-Red%20Folder/13169619/EASTSearchHistory.13169619_AccessibleVersion.htm[8/3/2011 5:59:09 PM]
NSN677-1002, Page 479
EAST Search History
JPO; DERWENT; IBM TDB
S10 9 S8 and S9 US- PGPUB; OR ON 2011/08/03 USPAT; USOCR; 12:54 FPRS; EPO; JPO; DERWENT;
IBM TDB
S11 1 ( "20080320149" ) . PN. US- PGPUB; OR OFF 2011/08/03 USPAT; USOCR 13:02
8/ 3/2011 5:59:04 PM
file:///Cl/Users/dnguyen17/Documents/e-Red%20Folder/13169619/EASTSearchHistory.13169619_AccessibleVersion.htm[8/3/2011 5:59:09 PM]
NSN677-1002, Page 480
Please type a plus sign (+) inside this box
Substitute for form 1449A/B/PTO
INFORMATION DISCLOSURE STATEMENT BY APPLICANT
(Use as many sheets as necessary)
Complete if Known Application Number
Filing Date June 27, 2011 First Named Inventor WU, Wenfu Group Art Unit
Examiner Name
Sheet 1 of 1 Attorney Docket Number HW708564
U.S. PATENT DOCUMENTS
Examiner Initials
Doc. No.
U.S. Patent Document
Name of Patentee or Applicant Date of Publication Filing Date If Appropriate
Application or Patent Number
Kind Code
A A 2009/0286527 Al Cheon et al. November 19, 2009 A B 2006/0153124 Al Kant et al. July 13, 2006 A C 2006/0146803 Al Bae et al. July 6, 2006 A D 2010/0135245 Al Zhu et al. June 3, 2010
FOREIGN PATENT DOCUMENTS
Examiner Initials
Doc. No.
Foreign Patent Document
Name of Patentee or Applicant Date of
Publication Translation * Office
Application or Patent Number
Kind Code
OTHER - NON PATENT LITERATURE DOCUMENTS
Examiner Initials
Doc. No.
Include name of the author (in CAPITAL LETTERS), title of the article (when appropriate), title of the item (book, magazine, journal, serial, symposium, catalog, etc.), date, page(s), volume-issue number (s), publisher, city and/or country where published.
Translation *
A E
"3GPP TS 23.401 — 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; GPRS enhancements for E-UTRAN access (Release 8)," July 2007, Version 1.1.0, 3rd Generation Partnership Project, Valbonne, France.
Examiner Signature /David Nguyen/ Date Considered 08/03/2011 * If the reference is not in English, then at least one of the following is provided: (a) an English translation in whole or in part or (b) a concise statement
of relevance in the form of, for example, an English language counterpart, an English-language abstract, or an English-language version of the search report or action by a foreicn patent office in a counterpart foreign application indicatingthe decree of relevance found by the foreicn office.
ALL 'REFERENCES CONSIDERED EXCEP WHERE LINED TH'ROUGH. /TIN,/
NSN677-1002, Page 481
Page 1 of 1
UNIIED STATES PATENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
P.O. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
BIB DATA SHEET CONFIRMATION NO. 2286
SERIAL NUMBER
13/169,619
FILING or 371(c) DATE
06/27/2011
RULE
CLASS
455
GROUP ART UNIT
2617
ATTORNEY DOCKET NO.
HW708564
APPLICANTS Wenfu WU, Shanghai, CHINA; Weihua HU, Shanghai, CHINA; Shanhan WANG, Shanghai, CHINA;
** CONTINUING DATA ************************* This application is a CON of 12/479,216 06/05/2009
which is a CON of PCT/CN2008/071842 07/31/2008
** FOREIGN APPLICATIONS ************************* CHINA 200710137568.8 08/07/2007
** IF REQUIRED, FOREIGN FILING LICENSE GRANTED ** 06/29/2011
Foreign Priority claimed 'Yes U No
35 USG 119(a-d) conditions met V Yes U No
Verified and /DAVID Q NGUYEN/
V rdYld?c=ic'e
DN
STATE OR COUNTRY
CHINA
SHEETS DRAWINGS
12
TOTAL CLAIMS
14
INDEPENDENT CLAIMS
2 Acknowledged Examiners Signature Initials
ADDRESS
Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601 UNITED STATES
TITLE
METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
FILING FEE RECEIVED
1090
FEES: Authority has been given in Paper
No. to charge/credit DEPOSIT ACCOUNT
0 All Fees
0 1.16 Fees (Filing)
0 1.17 Fees (Processing Ext. of time) 0 1.18 Fees (Issue) No. for following:
0 Other
0 Credit
BIB (Rev. 05/07).
NSN677-1002, Page 482
Please type a plus sign (+) inside this box
Substitute for form 1449A/B/PTO
INFORMATION DISCLOSURE STATEMENT BY APPLICANT
(Use as many sheets as necessary)
Complete if Known Application Number 13/169,619 Filing Date June 24, 2011 First Named Inventor WU, Wenfu Group Art Unit 2617 Examiner Name NGUYEN, David Q
Sheet 1 of 2 Attorney Docket Number HW708564
OLU.S. PATENT DOCUMENTS
Examiner Initials
Doc. No.
U.S. Patent Document
Name of Patentee or Applicant Date of Publication Filing Date If Appropriate
Application or Patent Number
Kind Code
A F 2008/0304454 Al Zhong et al. December 11, 2008
FOREIGN PATENT DOCUMENTS
Examiner Initials
Doc. No.
Foreign Patent Document
Name of Patentee or Applicant Date of Publication Translation* Office Application or
Patent Number Kind Code
A G EP 1713207 Al Huawei Tech. Co., Ltd. October 18, 2006 A H EP 2007160 Al Nokia Siemens Networks Oy December 24, 2008
A I WO 2007/024115 Al Electronics and Telecommunications Research Institute
March 1, 2007
A J WO 2006/029663 Al Matasushita Electric Inc. Co., Ltd. March 23, 2006 A K WO 2006/088331 Al LG Electronics Inc. August 24, 2006 A L CN 1881919 A Huawei Tech. Co., Ltd. December 20, 2006 (b) A M CN 1878389 A Huawei Tech. Co., Ltd. December 13, 2006 (b)
OTHER - NON PATENT LITERATURE DOCUMENTS
Examiner Initials
Doc. No.
Include name of the author (in CAPITAL LETTERS), title of the article (when appropriate), title of the item (book, magazine, journal, serial, symposium, catalog, etc.), date, page(s), volume-issue number (s), publisher, city and/or country where published.
Translation *
A N 1St Office Action in corresponding Russian Application No. 2009142607 (July 31, 2008).
(a)
A 0 1st Office Action in corresponding Chinese Application No. 200710137568.8 (July 17, 2009).
(a)
A P Written Opinion of the International Searching Authority in corresponding PCT Application No. PCT/CN2008/071842 (November 20, 2008).
A Q International Search Report in corresponding PCT Application No. PCT/CN2008/071842 (November 20, 2008).
A R Extended European Search Report in corresponding European Application No. 08783835.5 (February 24, 2010).
A S
"3GPP TS 23.060 - 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; General Packet Radio Service (GPRS); Service description; Stage 2 (Release 8)," June 2008, Version 8.1.0, 3rd Generation Partnership Project, Valbonne, France.
AT "3GPP TS 23.401 - 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; GPRS enhancements for E-UTRAN access (Release 8)," Version 1.1.1, 3rd Generation Partnership Project, Valbonne, France.
A U
"3GPP TS 23.402 — 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture Enhancements for non-3GPP accesses (Release 8)," June 2007, Version 1.1.0, 3rd Generation Partnership Project, Valbonne, France.
A V
"3GPP TS 23.402 — 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture Enhancements for non-3GPP accesses (Release 8)," July 2007, Version 1.2.0, 3rd Generation Partnership Project, Valbonne, France.
Examiner Signature il d N avi guyen / Date Considered 08/03/2011 " If the reference is not in English, then at least one of the following is provided: (a) an English translation in whole or in part or (b) a concise statement
of relevance in the form of, for example, an English language counterpart, an English-language abstract, or an English-language version of the search report or action by a foreicn patent office in a counterpart foreign application indicatingthe decree of relevance found by the foreicn office.
ALL 'REFERENCES CONSIDERED EXCEP WHERE LINED TH'ROUGH. /TIN,/
NSN677-1002, Page 483
Please type a plus sign (+) inside this box
Substitute for form 1449A/B/PTO
INFORMATION DISCLOSURE STATEMENT BY APPLICANT
(Use as many sheets as necessary)
Complete if Known Application Number 13/169,619 Filing Date June 24, 2011 First Named Inventor WU, Wenfu Group Art Unit 2617 Examiner Name NGUYEN, David Q
Sheet 2 of 2 Attorney Docket Number HW708564
OTHER - NON PATENT LITERATURE DOCUMENTS
Examiner Initials
Doc. No.
Include name of the author (in CAPITAL LETTERS), title of the article (when appropriate), title of the item (book, magazine, journal, serial, symposium, catalog, etc.), date, page(s), volume-issue number (s), publisher, city and/or country where published.
Translation "
A W
"3GPP TS 29.213 - 3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; Policy and Charging Control signalling flows and QoS parameter mapping; (Release 8)," May 2008, Version 8.0.0, 3rd Generation Partnership Project, Valbonne, France.
AX Image File Wrapper in corresponding US Application No. 12/479,216 (July 27, 2011).
Examiner Signature /David Nguyen/ Date Considered 08/03/2011 " If the reference is not in English, then at least one of the following is provided: (a) an English translation in whole or in part or (b) a concise statement
of relevance in the form of, for example, an English language counterpart, an English-language abstract, or an English-language version of the search report or action by a foreicn patent office in a counterpart foreign application indicatingthe decree of relevance found by the foreicn office.
ALL 'REFERENCES CONSIDERED EXCEP WHERE LINED TH'ROUGH. /TIN,/
NSN677-1002, Page 484
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
Patent Application No. 13/169,619
Confirmation No. 2286
Applicant: WU et al.
Filed: June 27, 2011
TC/AU: 2617
Examiner: NGUYEN, David Q
Docket No.: 1-1W708564 (Client Reference No. 81356140US16)
Customer No.: 77399
Commissioner for Patents P.O. Box 1450 Alexandria, VA 22313-1450
APPLICANTS' INTERVIEW SUMMARY
Applicants thank Examiner Nguyen for the courtesy of conducting an interview on
August 2, 2011. The attendees included Examiner Nguyen and Applicants' representative John
Conklin. The discussion focused on the amendment proposed by the Examiner regarding claim
8 and its dependent claims. Applicants agreed to amend the claims as suggested by the
Examiner.
Respectfully submitted,
. Conklin, Reg. o. 0,369 LE DIG, VOIT & MAYER, LTD. T • Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
Date: August 18, 2011
NSN677-1002, Page 485
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Title of Invention: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
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First Named Inventor/Applicant Name: Wenfu WU
Customer Number: 77399
Filer: John B. Conklin/Leanna Bultema
Filer Authorized By: John B. Conklin
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77399 7590 08/08/20L1 Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Sui to 4900 180 North Stetson Avenue Chicago, IL 60601
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IATTORNEY DOCKET NO. CONFIRMATION NO.
13/169,619 06/27/2011 Wenfu WU 11W708564 2286
TITLE OF INVENTION: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
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EXAMINER
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NGUYEN, DAVID Q
2.617
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NSN677-1002, Page 488
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Application Number: 13169619
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Title of Invention: METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A
HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
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NSN677-1002, Page 490
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NSN677-1002, Page 492
By n K. Winn, Reg. No. 58,579
FORM P10-1083
In re Application of: WU et al. Application No. 13/169,619 Confirmation No. 2286 Filed: June 27, 2011
PATENT Attorney Docket No. HW708564
Date: August 28, 2011
Commissioner for Patents P.O. Box 1450 Alexandria, VA 22313-1450
Sir:
Transmitted herewith is an AMENDMENT AFTER ALLOWANCE in the subject application.
0 Small entity status is claimed for this application under 37 CFR 1.27.
EA Petition for an extension of time for the period noted below, as well as for any additional period necessary to render the present submission timely. Please charge Deposit Account No. 12-1216 for the appropriate petition fee.
O Other:
Z Please charge Deposit Account No. 12-1216 in the total amount indicated below.
SMALL ENTITY OTHER THAN A SMALL
ENTITY
TIME EXTENSION PETITION FEE none $ 0.00 $ 0.00
subtract time extension fee previously paid none ($ 0.00) ($ 0.00)
CLAIM FEE
CLAIMS REMAINING
AFTER AMENDMENT
HIGHEST NUMBER
PREVIOUSLY PAID FOR
EXTRA CLAIMS
PRESENT RATE
ADD'L CLAIM
FEE RATE
ADD'L CLAIM FEE
TOTAL 14 MINUS 14 = 0 x 26 = $ x 52 = $0.00
INDEPENDENT 2 MINUS 2 = 0 x 110 = $ x 220 = $0.00
FIRST PRESENTATION OF MULTIPLE CLAIM + 195 = $ + 390 = $0.00 •
OTHER FEES AS DESCRIBED: $ $0.00
TOTAL AMOUNT TO BE CHARGED TO DEPOSIT ACCOUNT TOTAL $ TOTAL $0.00
El The Commissioner is hereby authorized to charge any deficiencies in the following fees associated with this communication or credit any overpayment to Deposit Account No. 12-1216. El Any filing fees under 37 CFR 1.16 for the presentation of extra claims. El Any patent application processing fees under 37 CFR 1.17.
Respectfully submitted,
LEYDIG, VOIT & MAYER, LTD. Two Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
LEYDIG, VOIT & MAYER, LTD.
AMENDMENT OR ROA TRANSMITTAL (Revised 09/15/2009)
NSN677-1002, Page 493
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
Application No. 13/169,619
Confirmation No. 2286
Applicant: WU et al.
Filed: June 27, 2011
Art Unit: 2617
Examiner: NGUYEN, David Q.
Docket No.: HW708564 (Client Ref. 81356140US)
Commissioner for Patents P.O. Box 1450 Alexandria, VA 22313-1450
AMENDMENT AFTER ALLOWANCE (37 CFR 1.312)
Sir:
In accordance with 37 CFR 1.312, please enter the following amendments after
allowance and consider the following remarks.
Amendments to the Claims are reflected in the listing of claims which begins on page 2 of
this paper.
Remarks begin on page 5.
Page 1 of 5
NSN677-1002, Page 494
Application No. 13/169,619 Amendment After Allowance
AMENDMENTS TO THE CLAIMS
1. (Original) A method for detaching a user equipment (UE) when a handover
from a 3rd generation partnership project (3GPP) network to a non-3GPP network occurs,
comprising:
receiving, by a mobility management entity (MME) of the 3GPP network, a delete
bearer request sent by a serving gateway (GW) of the 3GPP network which carries a cause
information element (IE), wherein the cause IE indicates the UE handovers from the 3GPP
network to the non-3GPP network;
deleting, by the MME, bearer resources of the UE;
detaching, by the MME, the UE from the 3GPP network when all the bearer resources
of the UE are deleted.
2. (Original) The method according to claim 1, wherein the cause IE is set to
"UE's accessing RAT changed from a 3GPP network to a non-3GPP network".
3. (Original) The method according to claim 2, further comprising:
setting, by a packet data network gateway (PDN GW), the cause IE to "UE's
accessing RAT changed from a 3GPP network to a non-3GPP network";
sending, by the PDN GW, the delete bearer request message carrying the cause IE to
the serving GW; and
sending, by the serving GW, the delete bearer request message carrying the cause IE
to the MME.
4. (Original) The method according to claim 1, wherein detaching, by the MME,
the UE from the 3GPP network further comprises:
detaching, by the MME, the UE from the 3GPP network without sending a detach
request message to the UE.
5. (Original) The method according to claim 1, comprising:
detaching, by the MME, the UE from the 3GPP network if a terminal capability of the
UE is single radio capability.
6. (Original) The method according to claim 1, comprising:
Page 2 of 5
NSN677-1002, Page 495
Application No. 13/169,619 Amendment After Allowance
detaching, by the MME, the UE from the 3GPP network if access policy information
of an operator is single radio access.
7. (Original) The method according to claim 1, comprising:
detaching, by the MME, the UE from the 3GPP network if a terminal capability of the
UE is dual radio capability and access policy information of an operator is single radio access;
or if the terminal capability of the UE is single radio capability and the access policy
information of the operator is dual radio access; or if the terminal capability of the UE is the
single radio capability and the access policy information of the operator is the single radio
access.
8. (Currently Amended) A mobile mobility management entity (MME),
configured to:
receive a delete bearer request sent by a serving gateway (GW) of a 3GPP network
when a handover from the 3GPP network to a non-3GPP network occurs, wherein the delete
bearer request carries a cause information element (1E) which indicates a user equipment (UE)
handovers from the 3GPP network to the non-3GPP network;
delete bearer resources of the user equipment UE; and
detach the UE from the 3GPP network when all the bearer resources of the UE are
deleted.
9. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the cause 1E is set to "UE's accessing RAT changed from a 3GPP network
to a non-3GPP network".
10. (Currently Amended) The mobile mobility management entity according to
claim 9, wherein the delete bearer request is sent from a packet data network gateway to the
network device MME via the serving gateway, wherein the cause IE is set to "UE's accessing
RAT changed from a 3GPP network to a non-3GPP network" by the packet data network
gateway.
Page 3 of 5
NSN677-1002, Page 496
Application No. 13/169,619 Amendment After Allowance
11. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the network device MME is configured to detach the UE from the 3GPP
network without sending a detach request message to the UE.
12. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the network device MME is configured to detach the UE from the 3GPP
network if a terminal capability of the UE is single radio capability.
13. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the network device MME is configured to detach the UE from the 3GPP
network if access policy information of an operator is single radio access.
14. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the network device MME is configured to detach the UE from the 3GPP
network if a terminal capability of the UE is dual radio capability and access policy
information of an operator is single radio access; or if the terminal capability of the UE is
single radio capability and the access policy information of the operator is dual radio access;
or if the terminal capability of the UE is the single radio capability and the access policy
information of the operator is the single radio access.
This listing of claims replaces all prior versions, and listings, of claims in the
application.
Page 4 of 5
NSN677-1002, Page 497
Application No. 13/169,619 Amendment After Allowance
REMARKS
The Notice of Allowance for this application was mailed on August 8, 2011. With the
payment of the issue fee, please enter the foregoing amendments to claims 8-14.
Each of the requested changes in claims 8-14 is fully supported by the specification
and drawings as originally filed. The amendment merely corrects minor errors in the claims.
It is believed that no additional search is required and no new issues are raised.
Applicant respectfully requests the amendment be entered.
Respectfully submitted,
/John K. Winn/ John K. Winn, Reg. No. 58,579 LEYDIG, VOIT & MAYER, LTD. Two Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
Date: August 29, 2011
Page 5 of 5
NSN677-1002, Page 498
Please enter. 08/31/2011. /DN/
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
Application No. 13/169,619
Confirmation No. 2286
Applicant: WU et al.
Filed: June 27, 2011
Art Unit: 2617
Examiner: NGUYEN, David Q.
Docket No.: HW708564 (Client Ref. 81356140US)
Commissioner for Patents P.O. Box 1450 Alexandria, VA 22313-1450
AMENDMENT AFTER ALLOWANCE (37 CFR 1.312)
Sir:
In accordance with 37 CFR 1.312, please enter the following amendments after
allowance and consider the following remarks.
Amendments to the Claims are reflected in the listing of claims which begins on page 2 of
this paper.
Remarks begin on page 5.
Page 1 of 5
NSN677-1002, Page 499
Application No. 13/169,619 Amendment After Allowance
AMENDMENTS TO THE CLAIMS
1. (Original) A method for detaching a user equipment (UE) when a handover
from a 3rd generation partnership project (3GPP) network to a non-3GPP network occurs,
comprising:
receiving, by a mobility management entity (MME) of the 3GPP network, a delete
bearer request sent by a serving gateway (GW) of the 3GPP network which carries a cause
information element (IE), wherein the cause IE indicates the UE handovers from the 3GPP
network to the non-3GPP network;
deleting, by the MME, bearer resources of the UE;
detaching, by the MME, the UE from the 3GPP network when all the bearer resources
of the UE are deleted.
2. (Original) The method according to claim 1, wherein the cause IE is set to
"UE's accessing RAT changed from a 3GPP network to a non-3GPP network".
3. (Original) The method according to claim 2, further comprising:
setting, by a packet data network gateway (PDN GW), the cause IE to "UE's
accessing RAT changed from a 3GPP network to a non-3GPP network";
sending, by the PDN GW, the delete bearer request message carrying the cause IE to
the serving GW; and
sending, by the serving GW, the delete bearer request message carrying the cause IE
to the MME.
4. (Original) The method according to claim 1, wherein detaching, by the MME,
the UE from the 3GPP network further comprises:
detaching, by the MME, the UE from the 3GPP network without sending a detach
request message to the UE.
5. (Original) The method according to claim 1, comprising:
detaching, by the MME, the UE from the 3GPP network if a terminal capability of the
UE is single radio capability.
6. (Original) The method according to claim 1, comprising:
Page 2 of 5
NSN677-1002, Page 500
Application No. 13/169,619 Amendment After Allowance
detaching, by the MME, the UE from the 3GPP network if access policy information
of an operator is single radio access.
7. (Original) The method according to claim 1, comprising:
detaching, by the MME, the UE from the 3GPP network if a terminal capability of the
UE is dual radio capability and access policy information of an operator is single radio access;
or if the terminal capability of the UE is single radio capability and the access policy
information of the operator is dual radio access; or if the terminal capability of the UE is the
single radio capability and the access policy information of the operator is the single radio
access.
8. (Currently Amended) A mobile mobility management entity (MME),
configured to:
receive a delete bearer request sent by a serving gateway (GW) of a 3GPP network
when a handover from the 3GPP network to a non-3GPP network occurs, wherein the delete
bearer request carries a cause information element (1E) which indicates a user equipment (UE)
handovers from the 3GPP network to the non-3GPP network;
delete bearer resources of the user equipment UE; and
detach the UE from the 3GPP network when all the bearer resources of the UE are
deleted.
9. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the cause 1E is set to "UE's accessing RAT changed from a 3GPP network
to a non-3GPP network".
10. (Currently Amended) The mobile mobility management entity according to
claim 9, wherein the delete bearer request is sent from a packet data network gateway to the
network device MME via the serving gateway, wherein the cause IE is set to "UE's accessing
RAT changed from a 3GPP network to a non-3GPP network" by the packet data network
gateway.
Page 3 of 5
NSN677-1002, Page 501
Application No. 13/169,619 Amendment After Allowance
11. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the network device MME is configured to detach the UE from the 3GPP
network without sending a detach request message to the UE.
12. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the network device MME is configured to detach the UE from the 3GPP
network if a terminal capability of the UE is single radio capability.
13. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the network device MME is configured to detach the UE from the 3GPP
network if access policy information of an operator is single radio access.
14. (Currently Amended) The mobile mobility management entity according to
claim 8, wherein the network device MME is configured to detach the UE from the 3GPP
network if a terminal capability of the UE is dual radio capability and access policy
information of an operator is single radio access; or if the terminal capability of the UE is
single radio capability and the access policy information of the operator is dual radio access;
or if the terminal capability of the UE is the single radio capability and the access policy
information of the operator is the single radio access.
This listing of claims replaces all prior versions, and listings, of claims in the
application.
Page 4 of 5
NSN677-1002, Page 502
Application No. 13/169,619 Amendment After Allowance
REMARKS
The Notice of Allowance for this application was mailed on August 8, 2011. With the
payment of the issue fee, please enter the foregoing amendments to claims 8-14.
Each of the requested changes in claims 8-14 is fully supported by the specification
and drawings as originally filed. The amendment merely corrects minor errors in the claims.
It is believed that no additional search is required and no new issues are raised.
Applicant respectfully requests the amendment be entered.
Respectfully submitted,
/John K. Winn/ John K. Winn, Reg. No. 58,579 LEYDIG, VOIT & MAYER, LTD. Two Prudential Plaza, Suite 4900 180 North Stetson Avenue Chicago, Illinois 60601-6731 (312) 616-5600 (telephone) (312) 616-5700 (facsimile)
Date: August 29, 2011
Page 5 of 5
NSN677-1002, Page 503
77399 7590 09/07/2011
Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
EXAMINER
ART UNIT
PAPER NUMBER
2617
NOTIFICATION DATE
DELIVERY MODE
09/07/2011
ELECTRONIC
NGUYEN, DAVID Q
UNITED STA1ES PA PENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
P.O. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
APPLICATION NO. FILING DATE
FIRST NAMED INVENTOR
ATTORNEY DOCKET NO. CONFIRMATION NO.
13/169,619
06/27/2011
Wenfu WU
HW708564
2286
Please find below and/or attached an Office communication concerning this application or proceeding.
The time period for reply, if any, is set in the attached communication.
Notice of the Office communication was sent electronically on above-indicated "Notification Date" to the following e-mail address(es): [email protected] [email protected]
PTOL-90A (Rev. 04/07)
NSN677-1002, Page 504
Application No.
13/169,619
Examiner
DAVID Q. NGUYEN
Applicant(s)
WU ET AL.
Art Unit
2617
Response to Rule 312 Communication
-- The MAILING DATE of this communication appears on the cover sheet with the correspondence address —
1. [E] The amendment filed on 29 August 2011 under 37 CFR 1.312 has been considered, and has been:
a) E] entered.
b) ❑ entered as directed to matters of form not affecting the scope of the invention.
c) ❑ disapproved because the amendment was filed after the payment of the issue fee.
Any amendment filed after the date the issue fee is paid must be accompanied by a petition under 37 CFR 1.313(c)(1)
and the required fee to withdraw the application from issue.
d) ❑ disapproved. See explanation below.
e) ❑ entered in part. See explanation below.
/DAVID Q NGUYEN/ Primary Examiner, Art Unit 2617
U.S. Patent and Trademark Office
PTOL-271 (Rev. 04-01)
Reponse to Rule 312 Communication Part of Paper No. 20110831
NSN677-1002, Page 505
UNITED STA 1ES PA1ENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
P.O. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
APPLICATION NO. ISSUE DATE
PATENT NO. ATTORNEY DOCKET NO. CONFIRMATION NO.
13/169,619
10/04/2011
8031677
HW708564
2286
77399 7590 09/14/2011
Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
ISSUE NOTIFICATION
The projected patent number and issue date are specified above.
Determination of Patent Term Adjustment under 35 U.S.C. 154 (b) (application filed on or after May 29, 2000)
The Patent Term Adjustment is 0 day(s). Any patent to issue from the above-identified application will include an indication of the adjustment on the front page.
If a Continued Prosecution Application (CPA) was filed in the above-identified application, the filing date that determines Patent Term Adjustment is the filing date of the most recent CPA.
Applicant will be able to obtain more detailed information by accessing the Patent Application Information Retrieval (PAIR) WEB site (http://pair.uspto.gov).
Any questions regarding the Patent Term Extension or Adjustment determination should be directed to the Office of Patent Legal Administration at (571)-272-7702. Questions relating to issue and publication fee payments should be directed to the Application Assistance Unit (AAU) of the Office of Data Management (ODM) at (571)-272-4200.
APPLICANT(s) (Please see PAIR WEB site http://pair.uspto.gov for additional applicants):
Wenfu WU, Shanghai, CHINA; Weihua HU, Shanghai, CHINA; Shanhan WANG, Shanghai, CHINA;
IR103 (Rev. 10/09)
NSN677-1002, Page 506
06/27/2011
Wenfu WU
HW708564
CONFIRMATION NO. 2286 PUBLICATION NOTICE
UNITED STATES PATENT AND TRADEMARK OFFICE
UNITED STATES DEPARTMENT OF COMMERCE United States Patent and Trademark Office Address: COMMISSIONER FOR PATENTS
PO. Box 1450 Alexandria, Virginia 22313-1450 www.uspto.gov
APPLICATION NUMBER
FILING OR 371(C) DATE
FIRST NAMED APPLICANT
ATTY. DOCKET NO./TITLE
13/169,619
77399 Leydig, Voit & Mayer, Ltd (for Huawei Technologies Co., Ltd) Two Prudential Plaza Suite 4900 180 North Stetson Avenue Chicago, IL 60601
Title:METHOD, SYSTEM, AND DEVICE FOR USER DETACHMENT WHEN A HANDOVER OR CHANGE OCCURS IN HETEROGENEOUS NETWORK
Publication No.US-2011-0244865-Al Publication Date:10/06/2011
NOTICE OF PUBLICATION OF APPLICATION
The above-identified application will be electronically published as a patent application publication pursuant to 37 CFR 1.211, et seq. The patent application publication number and publication date are set forth above.
The publication may be accessed through the USPTO's publically available Searchable Databases via the Internet at www.uspto.gov. The direct link to access the publication is currently http://www.uspto.gov/patft/.
The publication process established by the Office does not provide for mailing a copy of the publication to applicant. A copy of the publication may be obtained from the Office upon payment of the appropriate fee set forth in 37 CFR 1.19(a)(1). Orders for copies of patent application publications are handled by the USPTO's Office of Public Records. The Office of Public Records can be reached by telephone at (703) 308-9726 or (800) 972-6382, by facsimile at (703) 305-8759, by mail addressed to the United States Patent and Trademark Office, Office of Public Records, Alexandria, VA 22313-1450 or via the Internet.
In addition, information on the status of the application, including the mailing date of Office actions and the dates of receipt of correspondence filed in the Office, may also be accessed via the Internet through the Patent Electronic Business Center at www.uspto.gov using the public side of the Patent Application Information and Retrieval (PAIR) system. The direct link to access this status information is currently http://pair.uspto.gov/. Prior to publication, such status information is confidential and may only be obtained by applicant using the private side of PAIR.
Further assistance in electronically accessing the publication, or about PAIR, is available by calling the Patent Electronic Business Center at 1-866-217-9197.
Office of Data Managment, Application Assistance Unit (571) 272-4000, or (571) 272-4200, or 1-888-786-0101
page 1 of 1
NSN677-1002, Page 507