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3GPP2 TSG-X All IP Multimedia Domain

Bjorn HjelmAlltelbjorn.hjelm@alltel.com

IMS MMD 2007Dallas, TX

Nov. 6-7, 2007

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3GPP2 Introduction

All IP Multimedia Domain– Alignment with 3GPP

– Alignment with other standards

What next for 3GPP2?

Merits of a Common IMS

                       Agenda

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The Third Generation Partnership Project 2 (3GPP2) is: – A collaborative third generation (3G) telecommunications

specifications-setting project

– Comprised of interests from the Americas and Asia developing global specifications for MAP “Wireless Radiotelecommunication Intersystem Operations” network evolution to 3G

– Focused on global specifications for the radio transmission technologies (RTTs) supported by MAP and the wireless IP core networks, together known as the cdma2000 ® family of standards.

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Organizational Partners (OPs)

ARIB Association of Radio Industries and Businesses (Japan)CCSA China Communications Standard Association (China)TIA Telecommunications Industry Association (NAFTA countries:

USA, Canada, Mexico)TTA Telecommunications Technology Association (Korea)TTC Telecommunication Technology Committee (Japan)

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Other 3GPP2 Partners

Market Representation Partners (MRPs)– CDMA Development Group

– IPv6 Forum

– IA450 Association

– MobileIGNITE

Observers– ETSI

– TSACC

– ITU

Individual Members: more than 80 companies

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Steering CommitteeChair: Wan Yi (CCSA)

Vice Chair: Gerry Flynn (Verizon Wireless)

Vice Chair: Nick Yamasaki (KDDI)

Vice Chair: YK Kim (LGT)

Secretariat: Victoria Bosserman

Steering CommitteeChair: Wan Yi (CCSA)

Vice Chair: Gerry Flynn (Verizon Wireless)

Vice Chair: Nick Yamasaki (KDDI)

Vice Chair: YK Kim (LGT)

Secretariat: Victoria Bosserman

TSG-CTSG-CTSG-ATSG-A TSG-STSG-S

AccessNetwork Interfaces

cdma2000Radio

Interface

Services &SystemsAspects

CoreNetworks

OrganizationalPartners

MarketRepresentation

PartnersTSG-XTSG-X

3GPP2 Structure

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MMD Status

MMD Publications (X.S0013)– Revision 0

• Basic IMS from 3GPP Rel. 5

• SIP/SDP procedures

• Security

• Offline charging

• Service architecture

– Revision A

• Based on 3GPP Rel. 6

• Enhancements to support services such as – Presence

– Conferencing

– Push to Talk (PoC)

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MMD Status (cont.)

MMD Publications (X.S0013)– Revision B

• Based on 3GPP Rel. 6

• Optimized call flows

• Service based bearer control (QoS and charging policy control)

• Online charging

• Messaging

– Revision C

• Based on 3GPP Rel. 7

• Content in planning stage

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MMD Status (cont.)

Related Specifications– Short Message Service (X.S0016)

– Presence Service (X.P0027)

– Conferencing Using MMD (X.S0029)

– Voice Call Continuity (X.P0042)

– SMS Over IMS (X.P0048)

– MMD Emergency Services (X.P0049)

– Multi-Media Priority Service (X.P0051)

– MMD Roaming (X.P0052)

– MMD Policy Enhancements (X.P0053)

– MMD Supplementary Services (X.Pxxxx)

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3GPP GPRSCore Network

3GPP2 Packet DataNetwork

IP MultimediaSubsystem

3GPP RAN 3GPP2 RAN

SGSN GGSN

P-CSCF S-CSCF

PDSN MIP HA

I-CSCF App Svr

RNC Node-B BSC BTS

Core Network

Radio Access Network (RAN)

IP MultimediaSubsystem

P-CSCF S-CSCF

I-CSCF App Svr

Specific to cdma2000Specific to WCDMA

Harmonized between 3GPP and 3GPP2

Notes:

3GPP Network 3GPP2 Network

MMD Differences w/3GPP

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MMD Differences w/3GPP (cont.)

Technical Differences– Access Security

• 3GPP IMS mandates IPsec between UE and P-CSCF for integrity protection

• 3GPP2 allows for P-CSCF and UE to negotiate other security mechanisms using RFC 3329 (e.g., ipsec-ike, tls, Digest)

• 3GPP IMS mandates using AKA for authentication between S-CSCF and UE

• 3GPP2 allows for alternate authentication mechanisms like Digest, (see S.S0086-B) as well as AKA

– P-Access-network-Info

• 3GPP2 UE includes CDMA specific information

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MMD Differences w/3GPP (cont.)

Technical Differences (cont.)– Smart Cards

• 3GPP IMS terminals require smart cards (SIM/UICC)

• 3GPP2 does not require smart cards– IMS information can be stored in UE or R-UIM

– UICC + ISIM are supported as options

– Voice Call Continuity handoff

• 3GPP assumes dual radio UE

• 3GPP2 supports both single and dual radios– Single radio for HRPD/1x (VoIP 1x)

– Dual radio for WLAN/1x (VoIP 1X)

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MMD Differences w/3GPP (cont.)

Technical Differences (cont.)– Temporary Public/Private Identifiers

• 3GPP creates temporary IDs for terminals without ISIM

• 3GPP2 added support for temporary ID in X.S0013-A

• Methods of generating temporary ID differs– E.212 vs MIN based IMSI

– Anchored internet access point

• 3GPP has GGSN anchored for a given session

• 3GPP2 allows the PDSN to change during a session

– P-CSCF discovery procedures

• 3GPP supports via DHCP and PDP context activation

• 3GPP2 supports static configurations and use of DHCP

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MMD Differences w/3GPP (cont.)

Technical Differences (cont.)– Home Subscriber Server (HSS) vs. AAA

• 3GPP uses HSS for both circuit and packet service

• 3GPP2 uses AAA + subscriber databases as HSS equivalent for packet service only

– MMD supports Enhanced-Proxy-SLF in addition to the Redirect-SLF defined in 3GPP

– Support for MIP

• 3GPP supports MIP v6

• 3GPP2 supports both MIP v4 and MIP v6

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Differences with other standards

Other standards have similarly used 3GPP IMS as a base (e.g., CableLabs, TISPAN, WiMAX Forum)

3GPP2 uses formal and informal methods to maintain harmonization/interoperability with other forums/technologies– IETF, WiMAX Forum, NENA liaisons

– Member company participation across multiple forums

• 3GPP

• WLAN Interoperability

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Differences with other standards

Increased industry-wide harmonization has been a hot topic since Fall 2006– 3GPP initiated a study of methods to harmonize industry

requirements

– 3GPP2, among others, participated and provided input how to accomplish common requirements development

– 3GPP now considering implementation options based on the study results

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What’s Next

Focus of TSG-X in 2007– Support for UMB!

• CDG submitted detailed core network support requirements, TSG-X is focusing on the following:

– QoS differentiation and policy based QoS

– Fast Handoff

– Multiple simultaneous IP sessions (v4 and/or v6)

– IP mobility for Simple IP terminals

– Localized mobility management

– On-line, off-line, and service based accounting

– Dual IP addressing

– SMS over IMS

– Voice call continuity and VoIP services

– MMD Rev. C

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Going Forward (cont.)

Focus of TSG-X in 2007– Ongoing support of increased harmonization efforts in the

industry

• As harmonization discussions mature in 3GPP, 3GPP2 will be evaluating our role in those efforts and providing ongoing input as needed