98259163 Guide to GSM and WCDMA Protocols
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Transcript of 98259163 Guide to GSM and WCDMA Protocols
HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
HUAWEI Confidential
Security Level: 内部公开
Guide to GSM and
WCDMA Protocols
ISSUE1.0
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 2
Upon completion of this course, you will be
able to:
Learn basic concepts in telecom
protocols
Learn general knowledge of GSM
protocols
Learn general knowledge of WCDMA
protocols
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 3
Chapter 1 Basic Concepts in Telecom Protocols
Chapter 2 Guide to GSM Protocols
Chapter 3 Guide to WCDMA Protocols
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 4
International Organizations for Standardization
ITU International Telecommunications Union Telecommunication standards
ISO International Standard Organization Common standards
ETSI European Telecommunications Standards
Institute European standards
IETF Internet Engineering Task Force Internet standards
UMTS Universal Mobile Telecommunications
System
GSM Global System for Mobile Communications GSM standards
3GPP 3rd Generation Partnership Project 3GPP standards
IEEE Institute of Electrical and Electronics
Engineers
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 5
Open System Interconnection Model
Facilitating communication
between applications
Processing data format and
performing data encryption
Establishing, maintaining and
managing a session
Setting up end-to-end connection
between hosts
Performing routing
Providing media interaction and
link management
Managing bit stream transmission
Application
Layer
Presentation
Layer
Session Layer
Transport
Layer
Network Layer
Data Link
Layer
Physical Layer 1
2
3
4
5
6
7
Bottom layer: managing
network data transmission
Upper layer: managing
host data transmission
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 6
SAP and Primitives Service access point (SAP) is a point at which the N layer provides services for N+1 layer.
Primitives are categorized into the following types:
•REQUEST primitive: used when a higher layer is requesting a service from the next lower
layer
•INDICATION primitive: used by a layer providing a service to notify the next higher layer of
activities related to the primitive type REQUEST
•RESPONSE primitive: used by a layer to acknowledge receipt, from a lower layer, of the
primitive type INDICATION
•CONFIRM primitive: used by the layer providing the requested service to confirm that the
activity has been completed
N+1 layer N+1 layer
N layer N layer
RequestConfirm ResponseIndcation
Entity of
N+1 layer
Entity of N
layer
*SAP
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 7
Protocol Stack
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 8
Protocol Structure
In general, a protocol consists of the following sections:
Introduction (scope, references and abbreviations)
Background knowledge (protocol significance and relation with
other protocols)
Detailed description (related processes, such as the objective,
operation, and result)
Related messages
Information element codes in messages
Appendix (supplementary description of key points in the
protocol)
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 9
The Way to Read Protocols
To read protocols effectively, follow the principles below:
Read a protocol from the general introduction to the detailed
description step by step, that is, from the easy to the difficult.
Read the outline first to get a general knowledge of the
contents, and then browse the whole context.
Analyze the introduction section to find out the source and
objective of the protocol.
Focus on the basic processing flow, and combine the
message (and message codes if necessary) learning with the
protocol learning.
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 10
Questions
Can you recall any international organization for standardization?
What is the OSI model?
What is the basic structure of a protocol?
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 11
Chapter 1 Basic Concepts in Telecom Protocols
Chapter 2 Guide to GSM protocols
Chapter 3 Guide to WCDMA protocols
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 12
Development of GSM
Mobile communication has gone through the development from analog communication to
digital communication. The digital mobile communication mechanism at present consists
of GSM (Pan-Europe), ADC (the US) and JDC (PDC now, Japan). Following are the
milestones in the GSM development.
In 1982, Conference of European Postal and Telecommunications Administrations
(CEPT) set up the GSM, targeting at developing the second generation of mobile
communication system.
In 1986, the eight systems proposed after numerous researches and experiments were
tested on site in Paris.
In 1987, the GSM member states achieved an agreement on adopting the technologies
such as the TDMA, RPE-LTP, and GMSK after the on-site tests and demonstrations.
In 1988, 18 European countries signed the GSM memorandum of understanding.
In 1989, the GSM recommendations took effect.
In 1991, the GSM technology and network were formally adopted in Europe. The
second generation of mobile communication came into being.
The GSM experienced the updating from V5, V6 to V7. The GPRS was introduced at
the V6 stage.
The 3GPP was established. In 1999 and 2000, the 3G 1999 and 3G 2000 were put
forward respectively.
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 13
GSM Recommendations (1) GSM network description: GSM 01.02
GSM protocol abbreviations: GSM 01.04
Cheating-proof system: GSM 01.31 and GSM 02.31
Lawful interception: GSM 01.48、GSM 02.33
GPRS: GSM 01.60, GSM 01.61, GSM 02.60, GSM 04.60, GSM 04.64 and GSM 04.65
GSM service principles: GSM 02.01
GSM bearer service: GSM 02.02
GSM telephony service: GSM 02.03
GSM supplementary service: GSM 02.04, GSM 03.11 and GSM 09.11
Mobile station: GSM 02.06,GSM 02.07,GSM 02.30,GSM 02.40 and GSM 03.22
IMEI: GSM 02.16
ODB: GSM 02.41 and GSM 03.15
Network indicator and time zone: GSM 02.42
SoLSA: GSM 02.43 and 3G 23073
PDS: GSM 02.63 and GSM 04.63、
MNP: GSM 02.66
eMLPP: GSM 02.67 and GSM 04.67
VGCS: GSM 02.68
VBS: GSM 02.69
LCS: 3G 22071
CD: GSM 02.72、GSM 04.72
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 14
GSM Recommendations (2) CAMEL: GSM 02.78, GSM 03.78 and GSM 09.78
SOR: GSM 02.79 and GSM 03.79
Calling line identification service: GSM 02.81, GSM 03.81, and GSM 04.81
Call forwarding service: GSM 02.82, GSM 03.82 and GSM 04.82
Call waiting and call holding: GSM 02.83, GSM 03.83 and GSM 04.83
MPTY: GSM 02.84、GSM 03.84 and GSM 04.84
CUG: GSM 02.85、GSM 03.85 and GSM 04.85
Aoc and CAI: GSM 02.86, GSM 02.24, GSM 03.86 and GSM 04.86
Call Barring: GSM 02.88, GSM 03.88 and GSM 04.88
Network capability and structure: 03.xx
User data recovery: GSM 03.07
User data management: GSM 03.08 and GSM 03.16
Switchover: GSM 03.09
Location update: GSM 03.12
DTMF support: GSM 03.14
Basic call processing: GSM 03.18
Network safety: GSM 02.09 and GSM 03.20
SMS: GSM 03.40 and GSM 04.11
SMSCB: GSM 03.41 and GSM 04.12
Videotex and fax: GSM 03.43, GSM 03.44, GSM 03.45 and GSM 03.46
Interaction between GSM and other networks: GSM 03.47, GSM 03.49, GSM 03.50,
GSM 03.70 and GSM 09.01
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 15
GSM Recommendations (3)
UUS: GSM 03.87 and GSM 04.87
USSD: GSM 03.90 and GSM 04.90
ECT: GSM 03.91 and GSM 04.91
CCBS: GSM 03.93 and GSM 04.93
CNAP: GSM 03.96 and GSM 04.96
MSP: GSM 03.97
MS-BS-BSS-A interface: GSM 04.01, GSM 04.02, GSM 04.03, GSM 04.04, GSM 04.05, GSM
04.07, GSM 04.08, GSM 04.10, GSM 04.11, GSM 04.12, GSM 04.13, GSM 04.14, GSM 04.18,
GSM 04.21, GSM 04.22, GSM 04.80 and GSM 08.xx
CTS: GSM 04.56 and GSM 04.57
GCC: GSM 04.68
BCC: GSM 04.69
BSS physical layer: GSM 05.xx
Full rate and half rate: GSM 06.xx
Terminal: GSM 07.xx
MAP: GSM 09.02
Interaction with PSTN/ISUP: GSM 09.03, GSM 09.04, GSM 09.05, GSM 09.06, GSM 09.07 and
09.12
E interface BSSAP: GSM 09.08
BSS-NSS information mapping: GSM 09.10
SIM-ME interface: GSM 09.91
FIGS: GSM 02.31
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 16
GSM System Structure and Interfaces
The GSM system structure
is defined in the 03.02
recommendation.
GSM supports the following
interfaces in the CS domain
of the core network:
A: BSC<->MSC
B: MSC<->VLR
C: MSC<-HLR
D: VLR<->HLR
E: MSC<->MSC
F: MSC<->EIR
G: VLR<->VLR
H: HLR<->AuC
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 17
A interface Protocol Stack
Radio resource management (RR)
Mobility management (MM)
Call control (CC)
Message transfer part (MTP)
Signalling connection control part (SCCP)
BSS operation and maintenance application part (BSSOMAP)
Base station subsystem application part (BSSAP)
BSS management application part (BSSMAP)
Direct transfer application part (DTAP)
Layer3-CC
Layer3-MM
Layer3-RR
Data link layer
Physical layer
SCCP ITU-T Q712/713/714
MTP3 ITU-T Q704
MTP2 ITU-T Q703
MTP1 ITU-T Q702
ITU-T G711
DTAP GSM 04.08 08.06
BSSMAP GSM 08.06 08.08BSSAP
BSS
OMA
P
DTAP
BSSMAP
SCCP
MTP3
MTP2
MTP1
PCM-A
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 18
Questions
Can you recall any main recommendation of GSM?
Can you recall any main interface of GSM?
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 19
Chapter 1 Basic Concepts in Telecom Protocols
Chapter 2 Guide to GSM protocols
Chapter 3 Guide to WCDMA Protocol
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 20
3GPP Specification Description
Same to the naming convention of GSM specifications, 3GPP
specifications are named in the format of 2X.XXX. The 21-series
requirements specifications put forward requirements for certain
specifications to be standardized. After the specifications are
standardized, the 21-series requirements specifications are not
used or used to describe the system performance.
Among them, the 21.101 specifications are important references
to query the specifications from the 21 series to the 35 series.
Specifications recommended:
21.101 3rd Generation mobile system Release 1999
Specifications
21.102 3rd Generation mobile system Release 4 Specifications
21.905 3G Vocabulary
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 21
Mobile Service Specifications
• Telecom service (3GPP TS 22.003)
TS11 Telephony
TS12 Emergency Calls
TS21 Short message MT/PP 3GPP TS 23.040
TS22 Short message MO/PP 3GPP TS 23.040
TS23 Cell Broadcast Service 3GPP TS 23.041
TS61 Alternate speech and facsimile group 3 ITU-T T.30
TS62 Automatic Facsimile group 3 ITU-T T.30
TS91 Voice Group Call Service 3GPP TS42.068
TS92 Voice Broadcast Service 3GPP TS42.069
• Bearer service (3GPP TS 22.002/29.007)
BS2X Asynchronous General Bearer Service
BS3X Synchronous General Bearer Service
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 22
Mobile Service Specifications • Supplementary service (3GPP TS 22.003)
22.004 General on supplementary services
23.011 Technical realization of supplementary services
24.010 Mobile radio interface layer 3-supplementary services specification-
general aspects
24.080 Mobile radio layer 3 supplementary service specification; Formats
and coding
29.011 Signaling interworking for supplementary services
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 23
Mobility Management Specifications
23.007 Restoration procedures
23.016 Subscriber data management
23.012 Location management procedures
24.008 Mobile radio interface layer 3 specification
29.002 Mobile application part (MAP) specification
23.122 Non-Access-Stratum functions related to mobile station (MS) in idle mode
25.304 UE procedures in idle mode and procedures for cell reselection in
connected mode
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 24
ISUP Recommendations (1)
Entry Source Description
ISDN User Part functional
description Q.761 This recommendation describes the ISDN user part function.
ISDN user part general
functions of messages and
signals
Q.762
This recommendation describes the messages, parameters and
the signaling information contained within parameters used by
the ISDN user part protocol, and their functions.
ISDN user part formats and
codes Q.763
This recommendation specifies the formats and codes of the
ISDN user part messages and parameters required to support
basic bearer services and supplementary services.
ISDN user part signaling
procedures Q.764
This recommendation describes the ISDN user part signaling
procedures of the set-up and clear down of national and
international ISDN connections used for "ISUP'97". Actions
common for all types of exchanges are described only once.
Different or additional actions required in an exchange are
specified in a separate sub clause applicable to that type of
exchange. The procedures specified in clause 2 relate to basic
calls (for example, calls not involving supplementary services
and IN).
performance objectives Q.766
Signaling availability
Signaling dependability
Signaling delay
Signaling system limitations
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 25
ISUP Recommendations (2)
Entry Source Description
ISDN supplementary services Q.730
This recommendation provides general information for
ISDN supplementary services. It describes generic
procedures, network specific facilities and end-to-end
signaling methods. It also contains the generic format for
the supplementary service descriptions contained in
Recommendations Q.731 to Q.737, to be used in
conjunction with the ISDN User Part (ISUP) defined in
Recommendations Q.761 to Q.764 and Recommendation
Q.767 "Application of the ISDN user part of CCITT
Signaling System No. 7 for international ISDN
connections". A listing of the currently defined
supplementary services is included as well.
Numbering plan
CCITT
Recommend
ation E.164
It is assumed that the ISDN follows the international
numbering plan defined for the ISDN and provides a basic
circuit switched service between ISDN terminals or
between ISDN terminals and terminals being connected to
the existing international telephone network.
Test specification Q.784-
Q.785
ISUP basic call test specification.
ISUP protocol test specification for supplementary
services
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 26
TUP Recommendations (1)
Entry Source Description
TUP function description Q.721 This recommendation describes the TUP function.
TUP general functions of
messages and signals Q.722
This recommendation describes the general function of telephone
signaling messages and the telephone signals and other
information components contained in those messages.
Formats and codes Q.723
Basic format characteristics
Label
Telephone signal message formats and codes
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 27
TUP Recommendations (2)
Entry Source Description
Signaling procedures
Q.724
Normal call set-up
Dual seizure with both-way operation
Automatic repeat attempt
Speed of switching and signal transfer in international exchanges
Blocking and unblocking of circuits and circuit groups
Release of international connections and associated equipment
Continuity-check for 4-wire speech circuits
Continuity-check for 2-wire speech circuits
Interruption control for multiplex systems
Supplementary services
Echo suppressor control
Congestion control
Telephone User Part outage
State transition diagrams
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 28
TUP Recommendations (3)
Entry Source Description
Signaling Performance
Q.725
Signaling performance in the telephone application
Test specification
Q.783
This recommendation contains a set of detailed tests for the
Signaling system No. 7 telephony user part (TUP).
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 29
UMTS System Structure and Interfaces
BSS
BSC
RNS
RNC
CN
Node B Node B
IuPS
Iur
Iub
USIM
ME
MS
Cu
Uu
MSC server
SGSN Gs
GGSN GMSC
server
Gn HLR
Gr
Gc C
D
Nc
H
EIR
F Gf
Gi PSTN
IuCS
VLR B
Gp
VLR
G
BTS BTS
Um
RNC
Abis
SIM
SIM-ME i/f or
MSC server
B
PSTN
cell
CS-MGW CS-MGW
CS-
MGW
AuC
Nb
Mc Mc
Nb
PSTN PSTN
Nc
Mc
Mh
A Gb
E
The UMTS system structure is
defined in the 23.002
recommendation.
UMTS supports the following
interfaces in the CS domain of
the core network:
A: BSC<->MSC
B: MSC<->VLR
C: MSC<-HLR
D: VLR<->HLR
E: MSC<->MSC
F: MSC<->EIR
G: VLR<->VLR
H: HLR<->AuC
IuCS: MSC<->RNC
Mc: MSC<->MGW
Nc: MSC<->MSC
Nb: MGW<->MGW
Gs: VLR<-SGSN
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 30
IU-CS Interface Protocol Stacks
Q.2150.1
Q.2630.2
RANAP Iu UP Protocol Layer
Transport Network
Layer
Physical Layer
Transport User
Network Plane
Control Plane User Plane
Transport User
Network Plane
Transport Network Control Plane
Radio Network
Layer
ATM
SSCOP
AAL5
SSCOP
SSCF-NNI
AAL2 AAL5
MTP3b MTP3b
SCCP
SSCF-NNI
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 31
Description of IU-CS Interface Protocol Stack
Based on the vertical plane structure of the Iu-CS protocol, the Iu-CS interface protocol can be
described in the following aspects:
• Control plane: The RANAP (TS25.413) and signaling bearer (TS25.412) recommendations are
used on this plane.
• User plane: The IuUP (TS25.415) and data bearer (TS25.414) recommendations are used on
this plane.
• Transport network control plane: The ALCAP (ITU-T Q.2630.1 and ITU-T Q.2630.2) and
signalling bearer (TS25.414) recommendations are used on this plane.
List of recommendations:
23.930 Iu principles
23.110 UMTS access layer services and functions
25.410 UTRAN Iu interface: Introduction and principles
25.411 UTRAN Iu interface: UTRAN Iu layer interface 1
25.412 UTRAN Iu interface: Signaling transport
25.413 UTRAN Iu interface: RANAP signaling
25.414 UTRAN Iu interface: Data transport and transport signaling
25.415 UTRAN Iu interface: User plane recommendation
25.419 UTRAN Iu interface: Service area broadcast protocol (SABP)
ITU-T Recommendation Q.2210 MTP3-B
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 32
Structure of RANAP Protocol Stack
The structure of RANAP protocol stack is based on the following signaling bearer systems:
• ATM-based broadband SS7 (SAAL-NNI, MTP3b and SCCP)
• IP-based signaling transmission system (IP, SCTP and M3UA)
The RANAP protocol stack consists of the following parts:
• Radio access network application part (RANAP) (TS25.413) on radio network layer
• Signaling bearer part on transport network layer
RNC
(b)
Iu - CS RNC
(a) ATM-based
MSC Server (MSOFTX3000)
Iu - CS
RANAP
SCCP
M3UA
SCTP
IP
RANAP
SCCP
MTP3B
STC
SAAL
AAL5
ATM
PL
RANAP
SCCP
MTP3B
STC
SAAL
AAL5
ATM
PL
MSC Server (MSOFTX3000)
MAC
RANAP
SCCP
M3UA
SCTP
IP
MAC
RNC
(b) IP-based
Iu - CS RNC
(a)
MSC Server (MSOFTX3000)
Iu - CS
RANAP
SCCP
M3UA
SCTP
IP
RANAP
SCCP
MTP3B
STC
SAAL
AAL5
ATM
PL
RANAP
SCCP
MTP3B
STC
SAAL
AAL5
ATM
PL
MSC Server (MSOFTX3000)
MAC
RANAP
SCCP
M3UA
SCTP
IP
MAC
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 33
Structure of MAP Protocol Stack
SCCP ITU-T Q712/713/714
MTP3 ITU-T Q704
MTP2 ITU-T Q703
MTP1 ITU-T Q702
ITU-T G711
TCAP ITU-T Q771/772/773TCAP
SCCP
MTP3
MTP2
MTP1
PCM-A
MAP GSM 29.002
The mobile application part (MAP) protocol defines how messages are exchanged between CDMA
network entities for the purpose of realizing the MS roaming function. The involved network entities
include the MSC Server, VLR, SGSN, HLR, SMC and GMLC.
In the UMTS network, the C, D, E, G, Lg and L interfaces can all transfer MAP messages.
The MAP protocol at the C and D interfaces implements signaling interaction of the following services:
• Location registration
• Authentication
• Subscriber management
• Fault recovery (user data recovery during PRN)
• Call handling (routing information and roaming number retrieval)
• Supplementary service
• PSI (provide subscriber information)
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 34
Structure of E Interface Protocol Stack
When related mobile signaling is transferred on the E interface, the MAP protocol
stack is adopted. The MAP protocol implements signaling interaction of the
following services:
• Inter-office handover
• SMS transfer
When traffic data is transferred on the E interface, the TUP/ISUP protocol
stack is adopted.
MTP3 ITU-T Q704
MTP2 ITU-T Q703
MTP1 ITU-T Q702
ITU-T G711
ISUP Q.76XISUP
MTP3
MTP2
MTP1
PCM-A
TUP TUP Q.72X
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 35
E Interface Protocol Stack
MS/BSS-A
MSC-A MSC-B
MAP-Prep-Handover req. MAP-Allocate-Handover-Number req.
A-HO-REQUEST
A-HO-REQUIRED
BSS-B/MS
VLR-B
A-HO-REQUEST-ACK
MAP-Send-Handover-Report req. MAP-Prep-Handover resp.
IAM
MAP-Send-Handover-Report resp. (1)
ACM A-HO-COMMAND
A-HO-DETECT
A-HO-COMPLETE
MAP-Process-Access-Sig req. MAP-Send-End-Signal req. A-CLR-CMD/COM
ANSWER
RELEASE End of call
MAP-Send-End-Signal resp.
NOTE 1: Can be sent at any time after the reception of IAM
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 36
F Interface Protocol Stack
The F interface protocol stack also belongs to the MAP protocol stack.
The F interface protocol stack implements the signaling interaction of the CheckImei
service to check the international mobile station equipment identity (IMEI).
SCCP ITU-T Q712/713/714
MTP3 ITU-T Q704
MTP2 ITU-T Q703
MTP1 ITU-T Q702
ITU-T G711
TCAP ITU-T Q771/772/773TCAP
SCCP
MTP3
MTP2
MTP1
PCM-A
MAP GSM 29.002
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 37
Mc Interface Protocol Stack
H.248
SCTP
IP
MAC
L1
(G)MSC Server Mc
MGW
(a)
Mc MGW
(b) ATM-based
(G)MSC Server
H.248 H.248
SCTP
IP
MAC
L1
STC
SAAL
AAL5
MTP3B
ATM
PL
H.248
STC
SAAL
AAL5
MTP3B
ATM
PL
H.248
SCTP
IP
MAC
L1
(G)MSC Server Mc
MGW Mc
MGW
(b)
(G)MSC Server
H.248 H.248
SCTP
IP
MAC
L1
STC
SAAL
AAL5
MTP3B
ATM
PL
H.248
STC
SAAL
AAL5
MTP3B
ATM
PL
IP-based
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 38
Nc Interface Protocol Stack
BICC
SCTP
IP
MAC
L1
(G)MSC Server Nc
MSC Server
(c) SCTP/IP-based
Nc MSC Server
(d) ATM-based
(G)MSC Server
BICC BICC
SCTP
IP
MAC
L1
STC
SAAL
AAL5
MTP3B
ATM
PL
BICC
STC
SAAL
AAL5
MTP3B
ATM
PL
BICC
MTP3
MTP2
MTP1
(G)MSC Server Nc
MSC Server
(a) TDM-based
(G)MSC Server Nc
MSC Server
(b) M3UA-based
BICC
L1
BICC
M3UA
IP
MAC
L1
BICC
MTP3
MTP2
MTP1
SCTP
M3UA
IP
MAC
SCTP
BICC
SCTP
IP
MAC
L1
(G)MSC Server Nc
MSC Server
(c)
Nc MSC Server
(d)
(G)MSC Server
BICC BICC
SCTP
IP
MAC
L1
STC
SAAL
AAL5
MTP3B
ATM
PL
BICC
STC
SAAL
AAL5
MTP3B
ATM
PL
BICC
MTP3
MTP2
MTP1
BICC
MTP3
MTP2
MTP1
(G)MSC Server Nc
MSC Server
(a)
(G)MSC Server Nc
MSC Server
(b)
BICC
L1
BICC
M3UA
IP
MAC
L1
BICC
MTP3
MTP2
MTP1
BICC
MTP3
MTP2
MTP1
SCTP
M3UA
IP
MAC
SCTP
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Confidential Page 39
BICC Protocol
The bearer independent call control protocol (BICC) is a bearer-unspecific call control
protocol used in the backbone network. It is used in data networks including the ATM
network and IP network to bear the PSTN/ISDN service comprehensively. Therefore,
BICC is considered as an important tool to facilitate the change from the traditional
telecommunication network to the multi-service integration platform.
The control part and bearer part are separated in BICC. That is, BICC does not directly
control the media resources (ATM and IP), but controls them through standard bearer
control protocol (H.248 protocol).
BICC is developed based on the narrowband ISUP protocol. It can be considered as a
version that comes out of narrowband ISUP protocol with the detailed circuit control
part deleted. However, it can never be compatible with the ISUP protocol.
Theoretically, BICC can be used in all types of signal transport protocol stack to
provide bearer-unspecific call control.
The BICC protocol includes the ITU-T recommendations Q.1902, Q.2150 and Q.765.
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BICC Protocols
The bearer-unspecific BICC protocol proposed by the ITU-T has three different versions.
They are CS1, CS2 and CS3.
Protocol model, coding and decoding, and call flow
Q.1902.1: BICC CS2 Function description (functionality and protocol model)
Q.1902.2: BICC CS2 Common functions of messages and parameters
Q.1902.3: BICC CS2 Format and coding/decoding of messages and parameters
Q.1902.4: BICC CS2 Call flow and supplementary abnormity processing flow
APM
Q.1950: Call bearer control protocol
Q.1970: IP bearer control protocol
Q.1990: BICC bear Control Tunnel Protocol
Q.765: Application transport mechanism
Q.765.5: APM coding type
Signaling bearer
Q.2150.0: Common signaling transport service
Q.2150.1: STC on MTP3 and MTP3b
Q.2150.2: STC on SSCOP and SSCOPMCE
Q.2150.3: STC on SCTP
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Nb Interface Protocol Stack
MGWMGW
NbIu
Transport
Layer
SRNC
Radio
Protocols
Iu UP Iu UPNb
UP
Nb
UP
Nb UP
AAL-2 SAR SSCS (I.366.1)
AAL2 (I.363.2)
ATM
Nb UP
RTP
UDP
IPv4 or IPv6
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CAP Interface Protocol Stack
SCCP ITU-T Q712/713/714
MTP3 ITU-T Q704
MTP2 ITU-T Q703
MTP1 ITU-T Q702
ITU-T G711
TCAP ITU-T Q771/772/773TCAP
SCCP
MTP3
MTP2
MTP1
PCM-A
CAP GSM 23.078 29.078
The CAMEL application part (CAP) is developed based on the INAP protocol used in the wired
intelligent network. CAP supports the CAMEL service by enabling the signaling interaction between
functional entities (GSM SSF, GSM SRF and GSM SCF) of the wireless intelligent network (WIN).
CAP is part of the SS7, belonging to the user part of the transaction capability application part
(TCAP). It uses the structured/unstructured conversation capability provided by the TCAP to realize
the signaling interaction between different entities.
Recommendations:
• ETSI /3GPP CAMEL Phase1, Phase2, Phase 3 and Phase 4
• TS 23.078 (SSF/SCF)
• TS 23.018(Call flow)
• TS 29.078 (CAP)
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Questions
Can you recall any main interface in WCDMA?
Can you explain the relation between GSM and WCDMA?
谢谢
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