ETSI TS 123 234-2014 Universal Mobile Telecommunications System (UMTS) LTE 3GPP system to Wireless Local Area Network (WLAN) interworking System description (V12 0 0 3GPP TS 23 234.pdf

1、 ETSI TS 123 234 V12.0.0 (2014-09) Universal Mobile Telecommunications System (UMTS); LTE; 3GPP system to Wireless Local Area Network (WLAN) interworking; System description (3GPP TS 23.234 version 12.0.0 Release 12) TECHNICAL SPECIFICATION ETSI ETSI TS 123 234 V12.0.0 (2014-09)13GPP TS 23.234 versi

2、on 12.0.0 Release 12Reference RTS/TSGS-0223234vc00 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 Grasse (06) N 780

3、3/88 Important notice The present document can be downloaded from: http:/www.etsi.org 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 without the prior written authori

4、zation 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 the present document should be

5、 aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services

6、: http:/portal.etsi.org/chaircor/ETSI_support.asp 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 content of the PDF version shall not be m

7、odified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2014. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benef

8、it 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 123 234 V12.0.0 (2014-09)23GPP TS 23.234 version 12.0.0 Release

9、12Intellectual 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 in ETSI SR 000 314: “Intellectual Proper

10、ty 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 (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searche

11、s, 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 Technical Specification (TS) has been produced

12、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 deliverables. The cross reference between

13、 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“, “may not“, “need“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as describ

14、ed 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 123 234 V12.0.0 (2014-09)33GPP TS 23.234 version 12.0.0 Release 12Contents Intellectual Property R

15、ights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 7g31 Scope 8g32 References 8g33 Definitions, symbols and abbreviations . 10g33.1 Definitions 10g33.2 Symbols 11g33.3 Abbreviations . 11g34 WLAN Radio networks interworking with 3GPP 12g35 High-level Requirements and Principles 13g35.1 Acce

16、ss Control . 13g35.1.1 WLAN Impacts . 13g35.1.2 Existing 3GPP Element Impacts . 14g35.1.3 Requirements for WLAN Direct IP Access 14g35.1.4 Requirements for WLAN 3GPP IP Access . 14g35.1.4.1 Requirement for private network access from WLAN 3GPP IP Access . 15g35.1.4.2 Requirements for Support of IMS

17、Emergency Calls . 15g35.1.5 WLAN Access Authorization . 16g35.1.6 3GPP WLAN Attach 16g35.2 Void 17g35.3 User Identity . 17g35.3.1 General 17g35.3.2 NAI Username 17g35.3.3 NAI Realm Name . 17g35.3.4 NAI decoration for roaming 17g35.3.5 NAI decoration for IMS Emergency Call Service 18g35.4 Network Adv

18、ertisement and Selection . 18g35.4.1 Description of the issue . 18g35.4.2 I-WLAN Access Network Advertisement and Selection 19g35.4.2.1 Case of IEEE 802.11 WLANs. 19g35.4.2.1.1 General 19g35.4.2.1.2 WLAN Access Network Advertisement . 20g35.4.2.1.3 I-WLAN Access Network Selection . 20g35.4.2.2 Case

19、of other WLANs . 21g35.4.3 PLMN Advertisement and Selection 21g35.4.3.1 General 21g35.4.3.2 Network Advertisement 21g35.4.3.3 Network Selection . 21g35.5 Authentication methods 22g35.6 Service Authorization Principles for WLAN 3GPP IP Access 22g35.6.1 Accessing Home Network provided services . 22g35

20、.6.2 Accessing Visited Network provided services 23g35.6.3 External IP Network selection 23g35.7 IP Connectivity for WLAN 3GPP IP Access . 23g35.7.1 Principles 23g35.7.2 Tunnelling Requirements 24g35.7.3 Void 24g35.8 Roaming requirements for WLAN 3GPP IP Access 24g35.9 Routing Enforcement and Policy

21、 Enforcement for WLAN 3GPP IP Access . 25g35.9.1 Purpose for routing enforcement and policy enforcement 25g3ETSI ETSI TS 123 234 V12.0.0 (2014-09)43GPP TS 23.234 version 12.0.0 Release 125.9.2 Routing Enforcement in the WLAN AN 25g35.9.3 Routing enforcement and policy Enforcement in the HPLMN . 25g3

22、5.9.4 Routing enforcement and policy Enforcement in the VPLMN . 25g35.10 IP address allocation for the WLAN UE 25g35.10.1 General 25g35.10.2 Static and Dynamic Remote IP Address . 26g35.11 Charging . 26g35.12 AAA Protocol Requirements 27g35.13 QoS Support . 27g35.13.1 General 27g35.13.2 Use of CoS b

23、ased DiffServ for providing QoS over I-WLAN using WLAN 3GPP IP Access 28g35.13.3 QoS requirements on the architecture . 28g36 Interworking Architecture 28g36.1 Reference Model 28g36.1.1 Non Roaming WLAN Inter-working Reference Model . 29g36.1.2 Roaming WLAN Inter-working Reference Model . 29g36.2 Ne

24、twork elements . 31g36.2.1 WLAN UE 31g36.2.1.1 Void. 32g36.2.2 3GPP AAA Proxy . 32g36.2.3 3GPP AAA Server 33g36.2.4 HLR/HSS 33g36.2.5 WLAN Access Gateway . 34g36.2.5.1 Policy Enforcement . 35g36.2.5.2 Void. 35g36.2.6 Packet Data Gateway 35g36.2.7 Subscription Locator Function (SLF) . 36g36.2.8 Offli

25、ne Charging System 36g36.2.9 Online Charging System . 36g36.3 Reference Points . 37g36.3.1 Wa reference point 37g36.3.1.1 General description . 37g36.3.1.2 Functionality . 37g36.3.2 Wx reference point 37g36.3.3 D/Gr reference point 38g36.3.4 Wo reference point 38g36.3.5 Wf reference point 38g36.3.6

26、Wg reference point 39g36.3.7 Wn reference point 39g36.3.8 Wp reference point 39g36.3.9 Wi reference point 39g36.3.10 Wm reference point 39g36.3.11 Wd reference point 40g36.3.11.1 General description . 40g36.3.11.2 Functionality . 40g36.3.12 Wu reference point 40g36.3.13 Ww reference point . 41g36.3.

27、13.1 General Description 41g36.3.13.2 Functionality . 41g36.3.14 Dw reference point 41g36.3.15 Wy reference point 41g36.3.16 Wz reference point 41g36.4 Protocols . 41g36.4.1 Remote IP Layer . 42g36.4.2 Tunnelling layer 42g36.4.3 Transport IP Layer 42g36.5 WLAN user profile . 42g37 Procedures 43g37.1

28、 I-WLAN and VPLMN Selection Procedure . 43g37.1.1 Initial network selection 43g3ETSI ETSI TS 123 234 V12.0.0 (2014-09)53GPP TS 23.234 version 12.0.0 Release 127.1.2 Network re-selection . 43g37.2 WLAN Access Authentication and Authorisation . 44g37.3 Subscriber Profile Update 46g37.3.0 WLAN Direct A

29、ccess Authorization information update procedure 46g37.3.1 Access and service Authorization information update procedure . 47g37.4 Cancelling WLAN Registration . 48g37.5 Disconnecting a Subscriber by WLAN 49g37.6 Disconnecting a Subscriber by Online Charging System . 50g37.6.1 The OCS initiated WLAN

30、 AN access disconnection 50g37.6.2 The OCS initiated tunnel disconnection . 51g37.7 Charging offline charged subscribers . 52g37.8 Charging online charged subscribers 53g37.9 W-APN resolution and Tunnel establishment 54g37.9.1 Void 57g37.9.2 Subsequent authentication 57g37.9.3 Use of DNS . 57g37.9.4

31、 Subsequent tunnel establishment 57g37.10 Tunnel disconnection procedures . 57g37.10.1 WLAN UE initiated tunnel disconnection 58g37.10.2 The network initiated tunnel disconnection 59g37.10.3 Disconnection of the last tunnel for a WLAN UE 59g37.11 The WLAN UE initiated WLAN AN Access disconnection .

32、60g37.12 User identity to HSS resolution 60g37.12.1 General 60g37.12.2 SLF query . 61g37.13 Disconnecting a Subscriber by the External AAA Server 61g37.13.1 The External AAA Server initiated tunnel disconnection . 61g3Annex A (informative): Void . 63g3Annex B (informative): Void . 64g3Annex C (infor

33、mative): Possible interworking architectures between WLAN AN and PLMN 65g3C.1 WLAN shared by (or connected to) multiple ISPs and PLMNs 65g3C.2 Routing packets from WLAN UE when WLAN AN is connected to multiple VPLMNs/ISPs and it provides direct Internet access 65g3C.2.1 Separating traffic for differ

34、ent VPLMNs . 65g3C.2.2 Routing the traffic 66g3C.2.3 Separating traffic to different VPLMNs using a combined DNS/NAT approach 67g3C.3 WLAN AN exclusively owned by and connected to a single PLMN 69g3C.4 WLAN AN connected to a single ISP 69g3Annex D (normative): Short Message Service . 70g3D.1 Archite

35、cture for support of SMS 70g3D.2 Void 70g3D.3 Void 70g3Annex E (informative): Void . 71g3Annex F (normative): Information on re-using the GGSN to implement the PDG function . 72g3F.1 Introduction 72g3F.2 Mapping between E2E tunnel and GTP tunnel 73g3F.2.1 General . 73g3F.2.2 No re-use of policy cont

36、rol functionality in the GGSN 73g3F.2.3 Re-use of policy control functionality in the GGSN 73g3F.2.3.1 Usage of DiffServ marking of the GTP tunnel . 73g3F.2.3.2 Usage of QoS profile of the GTP tunnels . 74g3ETSI ETSI TS 123 234 V12.0.0 (2014-09)63GPP TS 23.234 version 12.0.0 Release 12F.3 Gn conside

37、rations 74g3F.3.0 General . 75g3F.3.1 Interworking procedure over Gn - Tunnel establishment procedure . 76g3F.3.2 Interworking procedure over Gn - Tunnel disconnection procedure . 77g3F.3.2.1 UE initiated tunnel disconnection . 77g3F.3.2.2 Network initiated tunnel disconnection 78g3F.4 Void 78g3F.5

38、Tunnel Terminating Gateway (TTG) functionality 78g3Annex G: Void 80g3Annex H (informative): Work in other bodies . 81g3H.1 QoS Mapping . 81g3H.2 WMM specifications from Wi-FiTM Alliance 82g3H.3 802.1D specifications from IEEE . 82g3H.4 IR 34 specifications from GSMA . 83g3Annex I (informative): Chan

39、ge history . 84g3History 85g3ETSI ETSI TS 123 234 V12.0.0 (2014-09)73GPP TS 23.234 version 12.0.0 Release 12Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and

40、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 date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information;

41、 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. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorpor

42、ated in the document. ETSI ETSI TS 123 234 V12.0.0 (2014-09)83GPP TS 23.234 version 12.0.0 Release 121 Scope This document specifies system description for interworking between 3GPP systems and Wireless Local Area Networks (WLANs). This specification is not limited to WLAN technologies. It is also v

43、alid for other IP based Access Networks that support the same capabilities towards the interworking system as WLAN does. The intent of 3GPPWLAN Interworking is to extend 3GPP services and functionality to the WLAN access environment. The 3GPPWLAN Interworking System provides bearer services allowing

44、 a 3GPP subscriber to use a WLAN to access 3GPP PS based services. This specification defines a 3GPP system architecture and procedures to do the following: - Provide Access, Authentication and Authorisation (AAA) services to the 3GPP-WLAN Interworking System based on subscription. - Provide access

45、to the locally connected IP network (e.g. the Internet) if allowed by subscription. - Provide WLAN UEs with IP bearer capability to the operators network and PS Services, if allowed by subscription. - Provide WLAN UEs with IP bearer capability to access IMS Emergency calls for both UICC and UICC-les

46、s cases. The interworking between 3GPP systems and Wireless Local Area Networks (WLANs) functionality in this specification is replaced by the functionality in 3GPP TS 23.402 40. No further changes to this specification are intended. If any future evolution of the procedures in this specification is

47、 necessary, it should be documented in other specifications. 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 date of publication, edition number, version number

48、, 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 implicitly refers to the latest version of that document

49、in the same Release as the present document. 1 void. 2 void. 3 void. 4 void. 5 3GPP TS 23.003: “Numbering, addressing and identification“. 6 3GPP TS 23.040: “Technical Realisation of the Short Message Service (SMS)“. 7 3GPP TS 23.060: “GPRS; Service description“. 8 void. 9 3GPP TS 24.234: “3GPP System to WLAN Interworking; UE to Network protocols; Stage 3“. 10 3GPP TS 29.002: “Mobile Application Part (MAP) specification“. ETSI ETSI TS 123 234 V12.0.0 (2014-09)93GPP TS 23.234 version 12.0.0 Release 1211 void. 12 void. 13 3GPP TS 32.251