3GPP TS 23.402 V10.7.0 (2012-03) Technical Specification

3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;

Architecture enhancements for non-3GPP accesses(Release 10)

The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and may be further elaborated for the purposes of 3GPP. The present document has not been subject to any approval process by the 3GPP Organizational Partners and shall not be implemented. This Specification is provided for future development work within 3GPP only. The Organizational Partners accept no liability for any use of this Specification. Specifications and reports for implementation of the 3GPP TM system should be obtained via the 3GPP Organizational Partners' Publications Offices.

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3GPP TS 23.402 V10.7.0 (2012-03) 2Release 10

Keywords LTE, UMTS, access

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No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.

2012, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).

All rights reserved.

UMTS is a Trade Mark of ETSI registered for the benefit of its members 3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners LTE is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partners GSM and the GSM logo are registered and owned by the GSM Association

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3GPP TS 23.402 V10.7.0 (2012-03) 3Release 10

Contents Foreword ...................................................................................................................................................... 9 Introduction .................................................................................................................................................. 9 1 Scope ................................................................................................................................................ 10 2 References ........................................................................................................................................ 10 3 Definitions, Symbols and Abbreviations............................................................................................ 12 3.1 Definitions ................................................................................................................................................. 12 3.2 Abbreviations............................................................................................................................................. 12 4 Architecture Model and Concepts ..................................................................................................... 13 4.1 Concepts .................................................................................................................................................... 13 4.1.0 General Concepts .................................................................................................................................. 13 4.1.1 General Concepts for Interworking Between E-UTRAN and CDMA2000 ............................................. 13 4.1.2 General Concepts for Interworking Between 3GPP Accesses and WiMAX ............................................ 14 4.1.3 IP Mobility Management Selection Principles ....................................................................................... 14 4.1.3.1 Static Configuration of Inter-technology Mobility Mechanism ......................................................... 14 4.1.3.2 Networks Supporting Multiple IP Mobility Mechanisms .................................................................. 14 4.1.3.2.1 IP Mobility Management Selection During Initial Attach to a Non-3GPP Access ........................ 15 4.1.3.2.2 IPMS solutions ................................................................................................................................ 16 4.1.3.2.3 IP Mobility Management Selection on Handover between accesses ............................................. 16 4.1.4 Trusted/untrusted non-3GPP access network detection .......................................................................... 17 4.1.5 Non-seamless WLAN offload ............................................................................................................... 17 4.2 Architecture Reference Model .................................................................................................................... 18 4.2.1 Architecture for 3GPP Accesses with PMIP-based S5/S8 ...................................................................... 18 4.2.2 Non-roaming Architectures for EPS ...................................................................................................... 18 4.2.3 Roaming Architectures for EPS............................................................................................................. 21 4.3 Network Elements ...................................................................................................................................... 25 4.3.1 Access Networks .................................................................................................................................. 25 4.3.1.1 E-UTRAN ....................................................................................................................................... 25 4.3.1.2 Trusted and Untrusted Non-3GPP Access Network .......................................................................... 25 4.3.2 MME.................................................................................................................................................... 26 4.3.3 Gateway ............................................................................................................................................... 26 4.3.3.1 General ........................................................................................................................................... 26 4.3.3.2 Serving GW .................................................................................................................................... 26 4.3.3.3 PDN GW ........................................................................................................................................ 27 4.3.4 ePDG ................................................................................................................................................... 27 4.3.5 PCRF ................................................................................................................................................... 28 4.3.5.1 Home PCRF .................................................................................................................................... 28 4.3.5.2 Visited PCRF .................................................................................................................................. 28 4.4 Reference Points ........................................................................................................................................ 28 4.4.1 List of Reference Points ........................................................................................................................ 28 4.4.2 Reference Point Requirements .............................................................................................................. 30 4.4.2.1 S5 Reference Point Requirements .................................................................................................... 30 4.4.2.2 Void ................................................................................................................................................ 30 4.4.2.3 Void ................................................................................................................................................ 30 4.4.2.4 Void ................................................................................................................................................ 30 4.5 High Level Functions ................................................................................................................................. 31 4.5.1 PDN GW Selection Function for Non-3GPP Accesses for S2a and S2b ................................................. 31 4.5.2 PDN GW Selection Function for S2c .................................................................................................... 32 4.5.3 Serving GW Selection Function for Non-3GPP Accesses ...................................................................... 32 4.5.4 ePDG Selection .................................................................................................................................... 33 4.5.5 PCRF Selection .................................................................................................................................... 33 4.5.6 DSMIPv6 Home Link Detection Function ............................................................................................. 33 4.5.7 IMS Emergency Session Support .......................................................................................................... 34 4.6 Identities .................................................................................................................................................... 34 4.6.1 User Identification ................................................................................................................................ 34

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