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3G Wireless End-to-End IP

Multimedia System(Wireless All-IP Network)

February 28, 2001

Anne Y. LeeDistinguished Member of Technical Staff

Wireless Systems [email protected]

(630)713-1257http://nwswww.ih.lucent.com/~wirlss/voip/voip.html

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aylee 02/28/01 Lucent Technologies - Proprietary 2

Whatis Wireless End-to-End IP Multimedia?

WhyWireless End-to-End IP Multimedia?

HowWireless End-to-End IP Multimedia?Standards Orgs & Status

Project Timeline

3GPP R5 Reference Model

Services Platforms

Radio Access Network

Network Diagram

Lucent Platforms & Reference Model Nodes

Call Flows

Performance, Security & Other Issues

Conclusion

Presentation Outline

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What is Wireless End-to-End IP Multimedia?

Wireless All-IP is:IP terminated at handsetAll packet, including voice

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New Services Single handset (PDA)

Integrated simultaneous packet voice and multimedia data

Single state machine for packet voice and multimedia

Access independent end user applications & interface

Single packet core network Circuit MSC eliminated

Simplified administration

Consolidated resources (cost savings)

Signalling/bearer path independence i.e. home control Same feature set wherever subscriber roams

Faster feature introduction with home control

Option to find least cost bearer path

Why Wireless End-to-End IP Multimedia?

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Why Wireless IP Multimedia ...? contd.

Single IP multimedia core network for wireline and wireless Shared feature servers and registrars with wireline service.

Merge of wireline and wireless end user services.

New internet-based features, e.g. call no answer treatments include

reply with customized html page.New multiple registrations or multiple contacts SIP features

for wireline andwireless devices for a single end user.Example: a. terminating call request arrives for subscriber

b. SIP server tries mobile

c. no answer

d. SIP server tries wireline phonee. no answer

f. SIP server sends customized html page to calling party

Ride internet technology curve

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Videotelephony Honey, is this what you want? Grandma, babys starting to walk!

Baby sitter monitor

Child/Elderly person monitor w/auto answer

capability

Integrated simultaneous voice and multimedia Help, Im lost

Multiple voice line appearances

We are buying a new house

Multimedia messaging (enhanced SMS)

All-IP Services Scenarios Examples

These are mass market usage scenario ideas. Can you think of

more? What are possible business uses?

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How Wireless End-to-End IP Multimedia?

Standards Orgs & StatusProject Timeline3GPP R5 Reference ModelServices PlatformsRadio Access NetworkNetwork DiagramLucent Platforms & Reference Model Nodes

Call FlowsPerformance, Security, & Other Issues

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3GPP

3GPP2

3GIP MWIF

IETF

ITU

Standards Organizations

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3GPP Wireless All-IP Standards Timeframe

3GPP Release 2000

December 2000

3GPP Release 4

March, 2001 Stage 2 for IP Multimedia

Subsystem

RAN Aspects

Long Development Lead time

Aspects

3GPP Release 5

December, 2001 Completion of stage 3 for IP

Multimedia Subsystem

Standardization began in ~98/99

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All IP Ad Hoc Group under TSG-S chartered in Nov. 1999 (moved directlyunder 3GPP2 Steering Committee Feb. 2000)Requirements for a 3G Network Based on Internet Protocol (All-IP)with Support for TIA/EIA-41 Interoperability version 1.0, October 2000

IP Network Architecture Model for CDMA2000 Spread SpectrumSystems version 1.0, October 2000

Workplan Recommendations for the 3GPP2 All IP Network DevelopmentActivitiesversion 1.0, October 2000

Use existing TSG structure for Specification DevelopmentWork divided across TSG-A, TSG-C, TSG-N, TSG-P with an All-IP ProjectGroup within TSG-S

Begin work Jan. 2001, with approximately a 12-month development cycle.

3GPP2 All IP Network Standards Status

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FOA

2Q034Q00now

Overarching FDDVersion 1 Baselined

Gate 2

2Q01

Gate 3

4Q01

Stds

Baseline

Assumes 3GPP Standards makes its

target baseline date.

Tentative Project Timeline

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Overarching FDD Version 1.0 Schedule

Milestone Date

1stDraft / Authors Review November 15, 16, 17 2000

Chalktalk December 6, 7, 2000

2

ndDraft / Authors Review

January 4, 5, 2001Walkthru January 17, 18, 2001

Formal Review February 5, 6, 7, 2001

Baseline March 31, 2001

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Reference Model

TE MTBSS

GERAN

SGSN GGSN

CSCF MGCF

MRF MGW*

T-SGW

CSCF

HSS

R-SGW

PSTN / Legac y/

External

Legacy Mobile

Signaling Network

EIR

IP Mult imedia

Domain *

R UmIu

Gn

Gf

CAP

Gi Gi

Gi

Gi

Mr

Cx

Mh

MgMm

Mw

Mc

Gc

Gr

Ms

Appl icat ions &Services

SCP

* Indicates Identical ElementsSignaling LinkSignaling and Data Link

Access Network Elements

Access Equipment

Core Network Elements

TE MT UTRANR Uu

MGW*Iu

Iu

Nb

IP Mult imedia

Domain *

Terminal Equipment (TE)

Not necessarily a wireless device

Used in conjunction with wireless

device

Example : laptop, PDA

Interfaces:

MT via R

Mobile Terminal (MT)

A wireless device

Possibly used in conjunction with

TE to access wireless services

Example : Mobile Phone

Interfaces:

MT via R

GERAN via Um

UMTS Radio Access Network (UTRAN)

Primary Interface between Wireless

device and Access Network

Designed to support both 2G and 3G

air interfaces.

Interfaces:

SGSN via Iu

MT via UuMGW via Iu

Serving GPRS Service Node(SGSN)

Primary point of attachment to

packet data network

Performs mobility management of

packet data mobiles

Authentication

Accounting

Maintains mobile state information

Interfaces:

GERAN via Gb

GGSN via Um

HSS via Iu

Services via CAP

Gateway GPRS Service Node(GGSN)

Interworking between SGSN and

external packet data network

Routing of packets

Packet Session Establishment

Accounting

Interfaces:

SGSN via Gn

CSCF via Gi

HSS via Gc

MRF via Gi

MGW via Gi

IP MM via Gi

Call Session Control Function (CSCF)

Incoming Call Gateway function

Call Control function

Serving Profile Database function,

Address Handling function.

Interfaces:

CSCF via Mw

R-SGW via MsIP MM CN via Mm

MGCF via Mg

GGSN via Gi

HSS via Cx

MRF via Mr

Services via VHE, OSA

Home Subscriber System (HSS)

Analogous to HLRContain Authentication information

Contain Information about serving

CSCF

Subscriber profile/subscription

information

Interfaces:CSCF via Cx

R-SGW via Mh

GGSN via Gc

SGSN via Gr

Services via VHE, OSA

Transport Signaling Gateway (T-SGW)

Terminates signaling fromPSTN/PLMN

Translates messages from MGCF to

PSTN

Interfaces:

PSTN via

MGCF via

Media Gateway (MGW)

Terminates transport from IPNetwork

Terminates transport from PSTN

Vocoders might be needed here

Interfaces:

GGSN via Gi

MGW via Nh

PSTN via

Media Gateway Control Function (MGCF)

Interwork with legacy networks forsignalling

Control of MGW

Signalling to CSCF for call control

Interfaces:

CSCF via Mg

MGW via Mc

T-SGW via

Roaming Signaling Gateway (R-SGW)

Allows for roaming between2G/CS domain

Provides interworking between SS7

and IP transport

Interfaces:

Legacy via

CSCF via Ms

HSS via Mh

Media Resource Function (MRF)

Provides support for multi-partyconferences

Bearer control between GGSN and

MGW for multimedia conferences

Tones and announcements

Interfaces:

CSCF via MrGGSN via Gi

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Reference Model - new network entity

BGCFS-CSCF

MGCF

MGW

a

b

H.248+

Breakout gatewaycontrol function

BGCF

Home Network

Visited Network

MGCF

MGW

b

H.248+

c

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Services Platforms

Open Services Access (OSA)SIPCAMEL (3GPP), WIN (3GPP2)

CSCF

Third Party (including VisitedNetwork local & location-based

services)

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Radio Access Network (RAN) contd.

IP Header Compression/Removal Compression specifications exists for 3GPP R99 for IP/TCP non-real time services

Removal and compression specifications (in 3GPP R4/R5) for IP/UDP/RTP headers in realtime services

Support for Simultaneous Multiple Radio Access Bearer Combinations, forexample:

ConversationalRAB + SignallingRAB with high traffic handling priority ConversationalRAB + SignallingRAB with high traffic handling priority +Interactive

RABs with high traffic handling priority

ConversationalRAB + SignallingRAB with high traffic handling priority +BackgroundRABs and/orInteractiveRABs with low traffic handling priority

ConversationalRAB + SignallingRAB with high traffic handling priority +InteractiveRABs with high traffic handling priority +BackgroundRABs and/orInteractiveRABs with

low traffic handling priority

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Network Diagram

Home IP Network

Visited IP Network

HSS

P-CSCF/MGCF

CS-MGW

S-CSCF/BGCF/MGCF

SGSN

GGSN

DHCP/DNS+

To SS7 network...

To PSTN phone...

IP router

To landline IP phone...

SS7

To IP mobile...

To circuit mobile...

RAN(RNC + BTS)

IP Mobile

R-SGW

I-CSCF/T-SGW

To PSTN...To 2G wireless network...

PS-MGW

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Network Subsystems

RAN

Backbone

Packet

Network

IP Multimedia

Core Network

Radio Access Network

UTRAN

GERAN

Backbone Packet Network

SGSN, GGSN, CGF, G-HLR

IP Multimedia Core Network

CSCF, MGW, MGCF, BGCF, MRF, R-

SGW, T-SGW, HSS/AAA

Services

Services

OSA (JAIN/PARLAY)

SIP

CAMEL

WIN

CSCF

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Lucent Platforms & Reference Model Nodes

Lucent Softswitch (LSS)

S-CSCF, P-CSCF, I-CSCF*

T-SGW**

R-SGW**

BGCF**

MGCF**

Super HLR / E-services HLR? HSS/AAA*

Lucent FMS / Springtide

3G SGSN/GGSN**

Lucent FMS

Charging GW** OMC**

QIP

DNS (ENUM)**

DHCP

Lucent Media Server (LMS)

MRF**

APX8000

CS-MGW**

PS-MGW**

OneBTS/RNC/BSC

UTRAN** GERAN**

PacketIN?

Application Server (for advance

services)

* new

** enhanced from UMTS R4 circuit and packet

networks and/or CoreIP

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Call Flows - Registration

Initial RegistrationRe-registration

De-registrationAdvanced Registration

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Call Flows - Registration Flow Example

Home

IP Network

Visited

IP Network

S-CSCF

P-CSCF

RANSGSN

GGSN

I-CSCF

DNS/DHCP+

HSS

IP Mobile Registration

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Call Flows - Advanced Registration

Multiple users, one devicemultiple aliases per user per device

Multiple identifiers, one devicemultiple users per device

Multiple contactsmultiple contacts per user (future)

3rd party registrationuser registers another user (future)

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Call Flows - Origination

IP mobile to PSTN phoneIP mobile to IP landline phone

IP mobile to circuit mobileIP mobile to IP mobile

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Call Flows - Origination Flow Example

Home IP Network

Visited IP Network

PSTN

S-CSCF

MGW

T-SGW

SS7

I-CSCF

P-CSCF

RANSGSN

MGCF

I-CSCF

DNS/DHCP+

GGSN

IP Mobile to PSTN Phone

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Call Flows - Termination

PSTN phone to IP mobileIP landline phone to IP mobile

Circuit mobile to IP mobileIP mobile to IP mobile

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Call Flows - Mobile to Mobile

With vocoder bypass (tandem free)With transcoderThrough PSTN

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Call Flows - Mobile to Mobile Flow Example

Home IP Network

(called party)

HSS

router

RAN

SGSN

Home IP Network

(calling party)

router

RAN

SGSN

P-CSCF

I-CSCF S-CSCFS-CSCF

DNS/DHCP+

P-CSCF

GGSN GGSN

Mobile to Mobile with Vocoder Bypass

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Call Flows - Multimedia

Mobile to mobileMobile to server (e.g. conferencebridge, games, etc.)

Mobile to IP landline terminal (e.g.United Airlines attendant, hotel desk clerk,

baby sitter monitor, etc.)

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Call Flows - Multimedia Flow Example

IM Core Network

P-CSCF

S-CSCF

I-CSCFHSS

UEB

UEb

Access Network

PS-MGW

Access NetworkPS-MGW

IM Core Network

P-CSCFS-CSCF

I-CSCF HSS

packet voice session in progressSGSNGGSN

SGSNGGSN

Invite(add new SDP)

QoS authorizationQoS authorization

QoS AllocationQoS Allocation

Second bearer for existing session

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Performance, Security, & Other Issues

PerformanceQoSSecurityAccounting and BillingEmergency ServicesLegal InterceptIPv6

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Quality of Service

Session Description negotiation/SDP

QoS policy control/resource authorization

Call flow and bearer setup interactions

IP bearer services/resource reservations

Bearer establishment for multimedia services

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Security

User Authentication

Network Peer-to-Peer Authentication

I-CSCF Firewall

Privacy/encryption

Integrity

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Accounting/Billing

Radio and Backbone Resources

IP Multimedia Core Network

External IP Network Resources

Public Switched Telephone Network (PSTN)

Pre-paid Accounts

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Conclusion

High speed wireless packet data will enable newways for people to communicate.

It is critical to Lucents future that Lucent workaggressively on developing the enablingarchitecture that will revolutionizewireless

communications.

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l 02/28/01 L t T h l i P i t 39

Acronyms

3GPP: 3rd generation partnership project

BGCF: breakout gateway control function BTS: base tranceiver system

CN: core network

CSCF: call session control function

DHCP: dynamic host control protocol

DNS: domain name server

FW: framework

GGSN: gateway GPRS support node

HSS: home subscriber system

I-CSCF: interrogating CSCF]

IM: IP multimedia

IM CN: IP multimedia core network JAIN: Java applets for intelligent networks

MGCF: media gateway control function

MGW: media gateway

MRF: media resource function MT: mobile terminal

OSA: open services architecture

PCN: packet core network

P-CSCF: proxy CSCF

RAN: radio access network

RNC: radio network controller

R-SGW: roaming signalling gateway

SCS: service capability server

S-CSCF: serving CSCF

SGSN: serving GPRS support node

SIP: session initiation protocol TE: terminal equipment

T-SGW: transport signalling gateway

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