1、 ETSI TS 1Universal Mobile TelIP flow mWireless Local (3GPP TS 23.2TECHNICAL SPECIFICATION123 261 V13.0.0 (2016elecommunications System (LTE; obility and seamless al Area Network (WLAN) offloaStage 2 .261 version 13.0.0 Release 1316-01) (UMTS); load; 13) ETSI ETSI TS 123 261 V13.0.0 (2016-01)13GPP T
2、S 23.261 version 13.0.0 Release 13Reference RTS/TSGS-0223261vd00 Keywords LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Gra
3、sse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified wi
4、thout the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of
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6、o one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The co
7、ntent of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2016. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade
8、 Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 123 261 V13.0.0 (2016-01)
9、23GPP TS 23.261 version 13.0.0 Release 13Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found i
10、n ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy
11、, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Techni
12、cal Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI
13、deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be
14、interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 123 261 V13.0.0 (2016-01)33GPP TS 23.261 version 13.0.0 Release 13Contents I
15、ntellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 Architecture model and concepts . 6g34.1 General concepts 6g34.2 Architecture reference model . 7g34.2.1 N
16、on-roaming architecture . 7g34.2.1 Roaming architecture 7g34.3 High level functions . 7g34.3.1 S2c and H1 extensions for IP flow mobility . 7g34.3.1.1 General 7g34.3.1.2 DSMIPv6 enhancements . 7g34.3.2 Policy provisioning for Inter-system mobility and WLAN offload 8g34.3.3 Policy Control and Chargin
17、g support . 9g34.3.4 Local Operating Environment Information . 9g35 IP Flow Mobility procedures and flows . 9g35.1 General . 9g35.2 PDN connection establishment over first access 9g35.2.1 General 9g35.2.2 PDN connection establishment over 3GPP access 9g35.2.3 PDN connection establishment over WLAN 1
18、0g35.3 Addition of an access to a PDN connection . 11g35.3.1 General 11g35.3.2 Addition of WLAN access 12g35.3.3 Addition of 3GPP access 13g35.4 IP flow mobility within a PDN connection 15g35.4.1 General 15g35.4.2 IP flow mobility within a PDN connection with network-initiated dynamic PCC . 15g35.4.
19、3 IP flow mobility within a PDN connection with UE-initiated resource request . 16g35.5 Removal of an access from a PDN connection 18g35.5.1 UE-initiated removal of an access from a PDN connection 18g35.5.2 HA-initiated removal of an access from a PDN connection . 19g35.6 Addition of one access for
20、multiple PDN connections to the same APN . 21g35.7 Detach and PDN disconnection procedures . 21g3Annex A (informative): Change history . 22g3History 23g3ETSI ETSI TS 123 261 V13.0.0 (2016-01)43GPP TS 23.261 version 13.0.0 Release 13Foreword This Technical Specification has been produced by the 3rdGe
21、neration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release da
22、te and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. techni
23、cal enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 123 261 V13.0.0 (2016-01)53GPP TS 23.261 version 13.0.0 Release 131 Scope This document specifies the Stage 2 system description for IP flow
24、mobility between a 3GPP and a WLAN. The technical solution is based on the working principles of DSMIPv6 2 and it is applicable to both the Evolved Packet System and the I-WLAN mobility architecture. The specification covers the system description of seamless WLAN offload and IP flow mobility betwee
25、n 3GPP and WLAN as well as the respective interactions with the PCC and ANDSF frameworks. The system description for non seamless WLAN offload is covered in 3GPP TS 23.402 3. This document specifies also the detailed extensions to S2c 3 and H1 4 reference points for IP flow mobility. The extensions
26、to the PCC and to the ANDSF framework are specified respectively in 3GPP TS 23.203 5 and in 3GPP TS 23.402 3. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by
27、date of publication, edition number, version number, etc.) or non-specific. - For a specific reference, subsequent revisions do not apply. - For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference im
28、plicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 IETF RFC 5555 (June 2009): “Mobile IPv6 support for dual stack Hosts and Routers (DSMIPv6)“. 3 3GPP TS 23.402: “Architecture enhancements for
29、non-3GPP accesses“. 4 3GPP TS 23.327: “Mobility between 3GPP-Wireless Local Area Network (WLAN) interworking and 3GPP systems“. 5 3GPP TS 23.203: “Policy and Charging Control architecture“. 6 IETF RFC 4877 (April 2007): “Mobile IPv6 Operation with IKEv2 and the Revised IPsec Architecture“. 7 IETF RF
30、C 5648 (October 2009): “Multiple Care-of Addresses Registration“. 8 IETF RFC 6089 (January 2011): “Flow Bindings in Mobile IPv6 and Network Mobility (NEMO) Basic Support“. 9 3GPP TS 23.234: “3GPP System to Wireless Local Area Network (WLAN) Interworking; System Description“. 10 3GPP TS 23.401: “Gene
31、ral Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access“. 11 3GPP TS 23.060: “General Packet Radio Service (GPRS); Service description; Stage 2“. 12 IETF RFC 6088 (January 2011): “Traffic Selectors for Flow Bindings“. 13 IETF RFC 5846 (Jun
32、e 2010): “Binding Revocation for IPv6 Mobility“. 14 IETF RFC 6275 (July 2011): “Mobility Support in IPv6“. ETSI ETSI TS 123 261 V13.0.0 (2016-01)63GPP TS 23.261 version 13.0.0 Release 133 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definition
33、s given in TR 21.905 1 and the following apply. The following terms used in this Technical Specification are defined in RFC 6275 14: Home Address, Care-of Address, binding cache, binding cache entry. The following terms used in this Technical Specification are defined in TS 23.402 3: Home network pr
34、efix. Home Agent: The Home Agent functionality consists in the DSMIPv6 anchor point functionality described in RFC 5555 2 and in RFC 4877 6 and the extensions defined in RFC 5648 7 and RFC 6089 8. As per TS 23.402 3, the HA functionality is located in the PDN Gateway. As per TS 23.327 4 the HA funct
35、ionality can be either a standalone entity or co-located with the GGSN or with the PDG. Local Operating Environment Information: This is a set of implementation specific parameters which describe the local environment in which the UE is operating. routing address: A routable IP address. In DSMIPv6 t
36、his is either the CoA (visited link case) or the HoA (in home link case). routing filter: A set of packet flow IP header parameter values/ranges used to identify one or more IP flows for routing purposes. routing rule: The association of a routing filter with a routing address. 3.2 Abbreviations For
37、 the purposes of the present document, the abbreviations given in TR 21.905 1 and the following apply. BID Binding Identifier CoA Care-of AddressDSMIPv6 Dual-Stack Mobile IPv6 EPC Evolved Packet Core ePDG Evolved Packet Data Gateway EPS Evolved Packet System FID Flow Identifier GW GatewayHA Home Age
38、nt HoA Home AddressUE User Equipment 4 Architecture model and concepts 4.1 General concepts This document specifies a mechanism for a UE to simultaneously connect to 3GPP access and WLAN and exchange different IP flows belonging to the same PDN connection through different accesses. The mechanism al
39、so enables seamless IP flow mobility, with IP flows belonging to the same or different applications being moved seamlessly between a 3GPP access and WLAN. The solution allows the operator to indicate how the IP flows are routed through the available access systems and to selectively offload some tra
40、ffic (e.g. best effort traffic) to WLAN while using UTRAN or E-UTRAN for other traffic (e.g. traffic with specific QoS requirements). This is usually referred to as WLAN offload. ETSI ETSI TS 123 261 V13.0.0 (2016-01)73GPP TS 23.261 version 13.0.0 Release 13The technical solution is based on DSMIPv6
41、 2 and is applicable to both the Evolved Packet System and the I-WLAN mobility architecture. Since the solution is based on DSMIPv6, IP address preservation and session continuity is provided when moving IP flows from one access to the other. 4.2 Architecture reference model 4.2.1 Non-roaming archit
42、ecture The baseline architecture reference model for IP flow mobility when EPS is deployed in the non roaming case is specified in TS 23.402 3. The baseline architecture reference model for IP flow mobility when I-WLAN mobility is deployed in the non roaming case is specified in TS 23.327 4. The bas
43、eline Non-roaming architecture for I-WLAN is specified in TS 23.234 9. The baseline Non-roaming architecture for ANDSF is specified in TS 23.402 3. 4.2.1 Roaming architecture The baseline architecture reference model for IP flow mobility when EPS is deployed in the roaming case is specified in TS 23
44、.402 3. The baseline architecture reference model for IP flow mobility when I-WLAN mobility is deployed in the roaming case is specified in TS 23.327 4. The baseline roaming architecture for I-WLAN is specified in TS 23.234 9. The baseline roaming architecture for ANDSF is specified in TS 23.402 3.
45、4.3 High level functions 4.3.1 S2c and H1 extensions for IP flow mobility 4.3.1.1 General The granularity of access system connectivity and inter system mobility based on TS 23.402 3 and TS 23.327 4 is per PDN connection basis. This implies that when a handover occurs all the IP flows belonging to t
46、he same PDN connection are moved from the source access system to the target access system. With IP flow mobility it is possible to have a finer granularity in access system connectivity and inter system mobility: the handover procedures can be applied to a single or multiple IP flows belonging to t
47、he same PDN connection. This implies that some IP flows of one PDN connection can be routed via one access system while simultaneously some IP flows of the same PDN connection can be routed via another access system. To achieve IP flow mobility the inter-system mobility signalling is enhanced in ord
48、er to carry routing filters. The extensions to DSMIPv6 mobility signalling needed to carry routing filters when the UE is connected to multiple accesses simultaneously are specified in RFC 5648 7 and RFC 6089 8 and are applicable to both S2c and H1. 4.3.1.2 DSMIPv6 enhancements When a UE configures
49、different IP addresses on multiple accesses, it can register these addresses with the HA as CoAs using multiple bindings as specified in IETF RFC 5648 7. To register multiple bindings, the UE generates a Binding ID (BID) for each CoA and stores the BID in the binding update list. The UE then registers its CoAs by sending a Binding Update (BU) with a Binding Identifier mobility option. The BID is included in the Binding Identifier mobility option. When the UE is on the home link in one of t
