1、ETSI TR 123 923 V3.0.0 (2001-05) Technical Repor Universal Mobile Telecommunications System (UMTS); Combined GSM and Mobile IP mobility handling in UMTS IP CN (3GPP TR 23.923 version 3.0.0 Release 1999) 3GPP TR 23.923 version 3.0.0 Release 1999 1 Reference DTRITSGS-0223923U Keywords U MTS ETSI 650 R
2、oute des Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06) No 7803/88 Imriortan t notice ETSI TR 123 923 V3.0.0 (2001-05) Individual copies of
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6、n extend to reproduction in all media. O European Telecommunications Standards Institute 2001. All rights reserved. ETSI 3GPP TR 23.923 version 3.0.0 Release 1999 2 ETSI TR 123 923 V3.0.0 (2001-05) Intellectual Property Rights IPRs essential or potentially essential to the present document may have
7、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 O00 314: “Intellectual Property Rights (7PRs); Essential, orpotentially Essential, IPRs notlJied to ETSI in respect ofETSI standards“
8、, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (-). Pursuant to the ETSI IPR Policy, 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 O00
9、3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Report (TR) has been produced by the ETSI 3d Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using
10、 their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under www.etsi.ormkev . ETSI 3GPP TR 23.923 version 3.0.0 Release 1999 3 ETS
11、I TR 123 923 V3.0.0 (2001-05) Contents Foreword 6 Introduction 6 1 2 3 3.1 3.2 4 5 6 6.1 6.2 6.3 6.4 6.5 6.6 7 7.1 7.2 7.3 8 8.1 8.1.1 8.1.2 8.2 8.2.1 8.2.2 8.3 8.4 8.4.1 8.5 8.6 8.6.1 8.6.2 8.6.2.1 8.6.2.2 8.6.2.3 8.6.2.4 8.6.2.5 8.6.2.6 8.6.3 8.7 8.7.1 8.8 9 9.1 9.2 9.2.1 9.2.2 9.2.3 9.3 Scope 7 R
12、eferences 7 Definitions and abbreviations 9 Definitions . 9 Abbreviations . 11 Working Assumptions . 12 Requirements on UMTS Packet Domain . 12 Current Status of Mobile IP. March 1999 13 Mobile IP RFCs 13 Mobile IP+ Drafts 14 Basic Principles of Mobile IPv4 16 Differences between IPv4 and IPv6 . 17
13、Reverse tunnels 17 Use of Route Optimisation 18 Stepwise introduction of Mobile IP in the CN . 18 Step 1 . Offering Mobile IP(+) service 18 Step 2 . Intermediate GPRS-MIP(+) system 19 Step 3 . Using Mobile IP+ for Intra System Mobility . 20 General Considerations and Explanations . 22 The Care-of ad
14、dress . 22 Saving Radio Resources and IPv4 Addresses with FA Care-of Addresses 22 The Care-of address in IPv6 . 22 The Home Address 22 Permanent and Temporary Home Addresses . 22 Private Home Address 23 Location of the HA and the FA 23 Terminal aspects 23 Terminal Model 23 Need for Broadcasting over
15、 Radio . 23 Security 24 Mobile IPv4 control messages: security issues 25 MIPv4 Protocol Security Analysis . 25 FA-ME Considerations . 25 HA-ME Considerations 25 ME-CH Considerations 25 Geographical position . 25 Signalling 26 Header compression and security . 26 Screening and 26 AAA (Authentica 26 A
16、AA Support 27 UMTS/GPRS Charging 29 . . First Step: MIP(+) in overlay to GPRS 30 General Design Criteria . 30 Assumptions 30 Signalling . 30 GGSN/FA . 31 Home Network . 31 Using the APN to Find a GGSN/FA 31 ETSI 3GPP TR 23.923 version 3.0.0 Release 1999 4 ETSI TR 123 923 V3.0.0 (2001-05) 9.4 Detaile
17、d Description of Mobile IP(+) Registration in a UMTS/GPRS PLMN 31 9.4.1 AT Command . 33 9.4.2 Activate PDP Context Request . 33 9.4.3 Select Suitable GGSN 33 Create PDP Context Request 34 9.4.4 9.4.6 Create PDP Context Response . 34 9.4.7 Activate PDP Context Accept 35 9.4.8 Foreign Agent Advertisem
18、ent 35 Mobile IP(+) Registration Request . 35 9.4.9 9.4.10 Mobile IP(+) Registration Reply 36 9.4.11 Insert PDP Address in GGSN PDP Context . 36 9.5 The UMTS/GPRS Detach Procedure . 37 9.6 37 10 Second Step: Intermediate UMTS/GPRS-MIP(+) System 37 10.1 The GGSN/FA Change 37 10.2 GGSN/FA denial of se
19、rvice . 39 11 Third Step: Target Architecture . 41 9.4.5 GGSN/FA Functionality 34 Summary of Alterations of and Additions to Current GPRS Standards for Step 1 11.1 11.2 11.3 11.4 11.4.1 1 1.4.2 1 1.4.3 1 1.4.4 1 1.4.5 1 1.4.6 1 1.4.7 11.4.8 11.5 11.5.1 11.5.1.1 11.5.1.2 11.5.1.3 11.5.1.4 11.5.1.5 11
20、.5.1.6 11.5.1.7 11.5.1.8 11.5.1.9 11.5.1.10 11.5.1.11 11.5.1.12 11.5.1.13 11.5.2 11.5.2.1 11.5.2.2 11.5.2.3 11.5.2.4 11.5.2.5 11.5.2.6 11.6 11.6.1 11.6.2 11.6.3 11.6.4 11.6.5 General Design Criteria for step 3 42 Assumptions 42 Using the AP 42 Session activation for ME requesting MIP(+) service and
21、equipped with a MIP(+) client . 42 AT Command . 43 Activate PDP Context Request . 43 Select MIP service 44 Activate PDP Context Accept 44 Foreign Agent Advertisement 44 Mobile IP(+) Registration Request . 45 Mobile IP(+) Registration Reply 45 Insert PDP Address in IGSN PDP Context 45 User mobility s
22、upport for ME requesting MIP(+) service and equipped with a MIP(+) client (GPRS) 46 Inter IGSN ROUTING AREA update for terminals requesting MIP(+) service and equipped with a MIP(+) client 47 Routing Area update request 47 SGSN context Request/Response . 47 Security functions . 48 SGSN Context Ackno
23、wledge . 48 Forward Packets . 48 Cancel location and Cancel location Ack . 49 Insert Subscriber Data and Insert Subscriber Data Ack 49 Routeing Area Update Accept 50 Routeing Area Update Complete 50 Mobile IP (+) Agent Advertisement . 50 MIP registration 50 Intra IGSN ROUTING AREA update for termina
24、ls requesting MIP(+) service and equipped with a MIP(+) client 51 Routeing Area Update Request 51 Security functions . 51 A Routeing Area Update Accept 52 Routeing Area Update Complete 52 Mobile IP(+) Agent Advertisement 52 MIP(+) registration . 52 Update Location . 49 Update Location Ack 49 User mo
25、bility support for ME SRNC Relocation required Forward SRNC relocation requ SRNC Relocation Request and Forward SRNC Relocation Response SRNC Relocation Proceeding 2 ETSI 3GPP TR 23.923 version 3.0.0 Release 1999 5 ETSI TR 123 923 V3.0.0 (2001-05) 11.6.6 11.6.7 11.6.8 11.6.9 11.6.10 11.6.1 1 11.6.12
26、 11.6.13 11.6.14 11.6.15 11.7 11.7.1 1 1.7.2 11.8 11.8.1 11.8.1.1 11.8.1.2 11.8.1.3 11.8.2 11.8.3 SRNC Relocation Commit . 55 SRNC Relocation Detect and SRNC Relocation Complete . 55 New MM system Information and RLC restart 55 Routing Area Update Request 55 Mobile IP (+) Agent advertisement 55 MIP
27、registration . 56 Complete SRNC Relocation . 56 Release . 56 Update GPRS location. Cancel location. Insert subscriber data . 56 Routing Area Update Accept and Complete 57 Traffic Cases 57 Sending Packets . 57 Receiving Packets 57 59 59 59 60 60 Multi Protocol Support 61 61 12 Compatibility Issues 61
28、 12.1.1 Mixed IPv4 IPv6 UMTS Networks . 61 12.1.2 Network Elements that need changes if migrating from MIP(+)v4 to MIP(+)v6 62 12.2 UMTS/GPRS - Mobile IP(+) . 62 Support of Non-MIP(+) Mobiles in a MIP+ based backbone 63 12.2.1 12.2.1.1 Pre Mobile IP(+) situation 63 12.2.1.2 Handling MEs without MIP(
29、+) functionality in a MIP+ based backbone . 64 12.2.2 Interworking with GPRS PLMNs 65 12.2.3 Interworking between UMTS/GPRS PLMNs and Mobile IPv6 65 13 Driving Forces . 65 13.1 Mobile IP+ is standardised by the IETF 65 13.2 Mobile IP(+) is an end-to-end solution 66 13.3 Mobile IP(+) can support cell
30、ular and non cellular access 66 13.4 Mobile IP(+) does not impact location registers 66 14 Open Issues 66 15 Conclusions 67 12.1 IPv4 IPv 61 Annex A: Mobile IP . 68 A . 1 Basic architecture . 68 A.2 Route optimisation . 69 A.2.1 The solution proposed for IPv4 . 69 A.2.2 The solution proposed for IPv
31、6 . 71 A.3 Security aspects 72 Annex B: Document change history . 73 ETSI 3GPP TR 23.923 version 3.0.0 Release 1999 6 ETSI TR 123 923 V3.0.0 (2001-05) Foreword This Technical Report has been produced by the 3GPP. The contents of the present document are subject to continuing work within the TSG and
32、may change following formal TSG approval. Should the TSG modiSl the contents of this TR, it will be re-released by the TSG with an identiSling change of release date and an increase in version number as follows: Version x.y.z where : x the fiist digit: 1 presented to TSG for information; 2 presented
33、 to TSG for approval; 3 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 incorporated in the report; Int
34、rod uction A single generic mobility handling mechanism that allows roaming between all types of access networks would allow users to conveniently move between fixed and mobile networks, between public and private networks as well as between PLMNs with different access technologies. The ongoing work
35、 in the IETF Mobile IP working group is targeted towards such a mechanism. To offer Mobile IP(+)l also to UMTS and GPRS users, a standard is needed for how to use Mobile IP in overlay to UMTS/GPRS. Additionally, Mobile IP(+) could be used to handle mobility in the UMTS CN. Potentially, this would al
36、so allow cost savings for operators and a broadening of the market for manufacturers. The present document is the result of two 3GPP-TSG SA-WG2 work items on Mobile IP: 1. “Combined GSM and Mobile IP mobility handling in UMTS IP CN“, which main goal is to describe and evaluate an architecture that u
37、ses Mobile IP+ for mobility management and tunnelling within the CN. With respect to the work in IETF, a time scale for including this architecture in UMTS standards should be proposed; 2. “GPRS Mobile IP interworking“, that aims at defining enhancements to the current GPRS standards to allow Mobile
38、 IP(+) to be used as an overlay to UMTS/GPRS for release 99. Conclusions of the technical report is presented in clause 15. Mobile il+ is defined in chapter 6. ETSI 3GPP TR 23.923 version 3.0.0 Release 1999 7 ETSI TR 123 923 V3.0.0 (2001-05) 1 Scope The present document contains a feasibility study
39、on using Mobile IP+ as a tunnelling and mobility management protocol in combination with GSM/UMTS mobility management in the packet domain of UMTS CN. A target architecture will be described and evaluated and the migration path from the current GPRS architecture towards the target architecture will
40、be defined. It shall also describe the driving forces for moving from GTP towards Mobile IP+ as well as the benefits and disadvantages of the target architecture. A time schedule, i.e. UMTS releases, for the standardisation of such an architecture shall be proposed. Work on Mobile IP+ in the IETF sh
41、ould be taken into account. This report will also contain a study on how to offer Mobile IP+ as an overlay to GPRS. This would allow an end user device, which is connected to the Internet (or intranet etc.) via LAN, to be reconnected during an active session via GPRS/UMTS or visa versa, without the
42、need for any re-configuration or re-start of applications. The outcome of this part shall be part of UMTS release 99. Proposed solutions need to be balanced between the requirement to minimise the impact on the current GPRS standards and the requirements generated by further development of using Mob
43、ile IP+ within the CN in an efficient way. The output of this study is a description of the system and a set of CRs for those standards handled by 3GPP-TSG SA-WG2. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present docu
44、ment . References are either specific (identified by 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. For this Release 1999 document, references to docume
45、nts are for Release 1999 versions. il 21 31 3G TS 22.101: “Services Principles“. GSM 03.02: “Digital cellular telecommunications system (Phase 2); Network architecture“. GSM 03 .O3 : “Digital cellular telecommunications system (Phase 2+); Numbering, addressing and identification“. 41 GSM 02.60: “Dig
46、ital cellular telecommunications system (Phase 2+);General Packet Radio Service (GPRS); Service description; Stage 1“. GSM 03.60: “Digital cellular telecommunications system (Phase 2+); General Packet Radio Service (GPRS); Service description; Stage 2“. GSM 07.60: “Digital cellular telecommunication
47、s system (Phase 2+); General Packet Radio Service (GPRS); Mobile Station (MS) supporting GPRS“. GSM 09.60: “Digital cellular telecommunications system (Phase 2+); General Packet Radio Service (GPRS); GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface“. GSM 1 1.14: “Digital cellular teleco
48、mmunications system (Phase 2+); Specification of the SIM application toolkit for the Subscriber Identity Module - Mobile Equipment (SIM - ME) interface“ GSM 12.15: “Digital cellular telecommunications system (Phase 2+); General Packet Radio Service (GPRS); GPRS Charging“. 3G TS 22.115 (V3.3): “Digit
49、al cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Charging and Billing“. 51 61 71 SI 91 lo1 ETSI 3GPP TR 23.923 version 3.0.0 Release 1999 8 ETSI TR 123 923 V3.0.0 (2001-05) i121 i131 i141 i151 i161 i251 i271 i261 i281 i291 i301 i3 i1 i321 Work in prog i331 i341 i351 i3 61 i371 GSM 30.01 : “Universal Mobile Telecommunications System (UMTS); UMTS baseline document positions on UMTS agreed by SMG“. 3G TS 23.101: “General UMTS Architecture“. GSM 04.08: “Digital cellular telecommunications system (Phase 2+); Mob
