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首页3GPP 24229-931: LTE中SIP与SDP的互通技术及其在IP-CAN中的应用
3GPP 24229-931: LTE中SIP与SDP的互通技术及其在IP-CAN中的应用
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3GPP 24229-931是3rd Generation Partnership Project (3GPP) 的一项技术规范,专注于Long-Term Evolution (LTE) 中的Session Initiation Protocol (SIP) 和Session Description Protocol (SDP) 技术。该文档在3GPP Stage 3(Release 9)的背景下制定,旨在促进IP多媒体呼叫控制协议的发展,确保不同IP-CAN(IP承载网络)之间的互操作性。
SIP是一种网络应用层协议,用于建立、管理和终止多媒体通信会话,例如语音和视频通话。它提供了一种统一的方法来发起和管理各种网络服务,支持多方通信和分布式呼叫处理。在LTE网络环境中,SIP被广泛应用于VoLTE(Voice over LTE)中,使得用户能够在移动设备上享受高质量的语音通话,同时保持数据连接。
SDP则是另一个关键组件,它定义了媒体会话的详细参数,如音频、视频编码格式、带宽需求以及会话控制信息。通过SDP,SIP能够描述会话的多媒体特性,使网络可以预知并调度所需的资源,以确保通信质量。
3GPP 24229-931标准要求运营商和设备制造商在实施LTE系统时,必须遵循SIP和SDP的标准化规定,以实现系统的兼容性和互操作性。这包括但不限于:支持多种编解码、网络部署策略、安全机制和QoS(服务质量)管理。
尽管这份规范还未经过3GPP组织合作伙伴的正式批准,但它为后续3GPP项目的研发工作提供了基础,强调了对于未来3GPP系统开发的指导性作用。同时,使用者应明确,此规范仅供参考,不应用于实际的网络部署,且3GPP不对规范的使用承担任何责任。
3GPP的联系信息也在此文档中提供,以便获取实施3GPP系统的完整规格和报告,包括其法国Sophia Antipolis的支持办公室地址、电话、传真和网址,以及关于UMTS(通用移动通信系统)、网络、IP、SIP、SDP、多媒体和LTE的相关关键词。
版权方面,使用本规范时必须遵守3GPP的版权声明,不得擅自使用或修改,以尊重知识产权和维护标准化进程的严谨性。
7.2A.5.2.1 General 254
7.2A.5.2.2 GPRS as IP-CAN...................................................................................................................................255
7.2A.5.2.3 I-WLAN as IP-CAN...............................................................................................................................256
7.2A.5.2.4 xDSL as IP-CAN....................................................................................................................................256
7.2A.5.2.5 DOCSIS as IP-CAN...............................................................................................................................256
7.2A.5.2.6 cdma2000
®
packet data subsystem as IP-CAN......................................................................................257
7.2A.5.2.7 EPS as IP-CAN......................................................................................................................................257
7.2A.5.2.8 Ethernet as IP-CAN................................................................................................................................257
7.2A.5.3 Operation...................................................................................................................................................257
7.2A.6 Orig parameter definition.............................................................................................................................258
7.2A.6.1 Introduction...............................................................................................................................................258
7.2A.6.2 Syntax 258
7.2A.6.3 Operation...................................................................................................................................................258
7.2A.7 Extension to Security-Client, Security-Server and Security-Verify header fields.......................................258
7.2A.7.1 Introduction...............................................................................................................................................258
7.2A.7.2 Syntax 258
7.2A.7.3 Operation...................................................................................................................................................258
7.2A.8 IMS Communication Service Identifier (ICSI)............................................................................................258
7.2A.8.1 Introduction...............................................................................................................................................258
7.2A.8.2 Coding of the ICSI....................................................................................................................................258
7.2A.9 IMS Application Reference Identifier (IARI)..............................................................................................259
7.2A.9.1 Introduction...............................................................................................................................................259
7.2A.9.2 Coding of the IARI....................................................................................................................................259
7.2A.10 "phone-context" tel URI parameter............................................................................................................259
7.2A.10.1 Introduction.............................................................................................................................................259
7.2A.10.2 Syntax259
7.2A.10.3 Additional coding rules for "phone-context" tel URI parameter............................................................260
7.2A.11 Extension to Content-Disposition header field..........................................................................................260
7.2A.11.1 Introduction.............................................................................................................................................260
7.2A.11.2 Syntax260
7.2A.11.3 Operation.................................................................................................................................................261
7.3 Option-tags defined within the present document.............................................................................................261
7.4 Status-codes defined within the present document............................................................................................261
7.5 Session description types defined within the present document........................................................................261
7.5.1 General 261
7.5.2 End-to-access-edge media plane security.......................................................................................................261
7.5.2.1 General 261
7.5.2.2 Syntax 261
7.5.2.3 IANA registration.........................................................................................................................................262
7.6 3GPP IM CN subsystem XML body.................................................................................................................262
7.6.1 General 262
7.6.2 Document Type Definition.............................................................................................................................262
7.6.3 XML Schema description...............................................................................................................................263
7.6.4 MIME type definition.....................................................................................................................................264
7.6.4.1 Introduction..................................................................................................................................................264
7.6.4.2 Syntax 264
7.6.4.3 Operation264
7.6.5 IANA Registration..........................................................................................................................................265
7.7 SIP timers...........................................................................................................................................................266
7.8 IM CN subsystem timers....................................................................................................................................267
7.9 Media feature tags defined within the current document...................................................................................267
7.9.1 General 267
7.9.2 Definition of media feature tag g.3gpp.icsi-ref...............................................................................................268
7.9.3 Definition of media feature tag g.3gpp.iari-ref...............................................................................................268
8 SIP compression.................................................................................................................................269
8.1 SIP compression procedures at the UE..............................................................................................................269
8.1.1 SIP compression..............................................................................................................................................269
8.1.2 Compression of SIP requests and responses transmitted to the P-CSCF........................................................269
8.1.3 Decompression of SIP requests and responses received from the P-CSCF....................................................270
8.2 SIP compression procedures at the P-CSCF......................................................................................................270
8.2.1 SIP compression..............................................................................................................................................270
3GPP
3GPP TS 24.229 V9.3.1 (2010-03)11Release 9
8.2.2 Compression of SIP requests and responses transmitted to the UE................................................................270
8.2.3 Decompression of SIP requests and responses received from the UE............................................................270
9 IP-Connectivity Access Network aspects when connected to the IM CN subsystem.........................271
9.1 Introduction........................................................................................................................................................271
9.2 Procedures at the UE..........................................................................................................................................271
9.2.1 Connecting to the IP-CAN and P-CSCF discovery........................................................................................271
9.2.2 Handling of the IP-CAN.................................................................................................................................272
9.2.2A P-CSCF restoration procedure.....................................................................................................................272
9.2.3 Special requirements applying to forked responses........................................................................................272
10 Media control...................................................................................................................................272
10.1 General.............................................................................................................................................................272
10.2 Procedures at the AS........................................................................................................................................273
10.2.1 General..........................................................................................................................................................273
10.2.2 Tones and announcements............................................................................................................................273
10.2.2.1 General 273
10.2.2.2 Basic network media services with SIP.....................................................................................................273
10.2.2.3 SIP interface to VoiceXML media services...............................................................................................273
10.2.2.4 Media control channel framework and packages.......................................................................................274
10.2.3 Ad-hoc conferences.......................................................................................................................................274
10.2.3.1 General 274
10.2.3.2 Basic network media services with SIP.....................................................................................................274
10.2.3.3 Media control channel framework and packages.......................................................................................274
10.2.4 Transcoding...................................................................................................................................................274
10.2.4.1 General 274
10.2.4.2 Basic network media services with SIP.....................................................................................................275
10.2.4.3 Media control channel framework and packages.......................................................................................275
10.3 Procedures at the MRFC..................................................................................................................................275
10.3.1 General..........................................................................................................................................................275
10.3.2 Tones and announcements............................................................................................................................275
10.3.2.1 General 275
10.3.2.2 Basic network media services with SIP.....................................................................................................275
10.3.2.3 SIP interface to VoiceXML media services...............................................................................................276
10.3.2.4 Media control channel framework and packages.......................................................................................276
10.3.3 Ad-hoc conferences.......................................................................................................................................276
10.3.3.1 General 276
10.3.3.2 Basic network media services with SIP.....................................................................................................276
10.3.3.3 Media control channel framework and packages.......................................................................................276
10.3.4 Transcoding...................................................................................................................................................277
10.3.4.1 General 277
10.3.4.2 Basic network media services with SIP.....................................................................................................277
10.3.4.3 Media control channel framework and packages.......................................................................................277
Annex A (normative): Profiles of IETF RFCs for 3GPP usage.......................................................278
A.1 Profiles...........................................................................................................................................278
A.1.1 Relationship to other specifications...............................................................................................................278
A.1.2 Introduction to methodology within this profile............................................................................................278
A.1.3 Roles...............................................................................................................................................................280
A.2 Profile definition for the Session Initiation Protocol as used in the present document...................284
A.2.1 User agent role...............................................................................................................................................284
A.2.1.1 Introduction.................................................................................................................................................284
A.2.1.2 Major capabilities........................................................................................................................................284
A.2.1.3 PDUs299
A.2.1.4 PDU parameters..........................................................................................................................................300
A.2.1.4.1 Status-codes..............................................................................................................................................300
A.2.1.4.2 ACK method............................................................................................................................................304
A.2.1.4.3 BYE method.............................................................................................................................................306
A.2.1.4.4 CANCEL method.....................................................................................................................................314
A.2.1.4.5 COMET method.......................................................................................................................................317
A.2.1.4.6 INFO method............................................................................................................................................317
3GPP
3GPP TS 24.229 V9.3.1 (2010-03)12Release 9
A.2.1.4.7 INVITE method........................................................................................................................................324
A.2.1.4.7A MESSAGE method...............................................................................................................................334
A.2.1.4.8 NOTIFY method......................................................................................................................................343
A.2.1.4.9 OPTIONS method....................................................................................................................................351
A.2.1.4.10 PRACK method......................................................................................................................................359
A.2.1.4.10A PUBLISH method...............................................................................................................................366
A.2.1.4.11 REFER method......................................................................................................................................374
A.2.1.4.12 REGISTER method................................................................................................................................382
A.2.1.4.13 SUBSCRIBE method.............................................................................................................................390
A.2.1.4.14 UPDATE method...................................................................................................................................399
A.2.2 Proxy role.......................................................................................................................................................406
A.2.2.1 Introduction.................................................................................................................................................406
A.2.2.2 Major capabilities........................................................................................................................................407
A.2.2.3 PDUs416
A.2.2.4 PDU parameters..........................................................................................................................................417
A.2.2.4.1 Status-codes..............................................................................................................................................417
A.2.2.4.2 ACK method............................................................................................................................................422
A.2.2.4.3 BYE method.............................................................................................................................................424
Prerequisite A.163/3 - - BYE response.................................................................................................432
A.2.2.4.4 CANCEL method.....................................................................................................................................433
A.2.2.4.5 COMET method.......................................................................................................................................436
A.2.2.4.6 INFO method............................................................................................................................................436
A.2.2.4.7 INVITE method........................................................................................................................................444
A.2.2.4.7A MESSAGE method...............................................................................................................................457
A.2.2.4.8 NOTIFY method......................................................................................................................................466
A.2.2.4.9 OPTIONS method....................................................................................................................................476
A.2.2.4.10 PRACK method......................................................................................................................................485
A.2.2.4.10A PUBLISH method...............................................................................................................................492
A.2.2.4.11 REFER method......................................................................................................................................502
A.2.2.4.12 REGISTER method................................................................................................................................511
A.2.2.4.13 SUBSCRIBE method.............................................................................................................................519
A.2.2.4.14 UPDATE method...................................................................................................................................529
A.3 Profile definition for the Session Description Protocol as used in the present document...............538
A.3.1 Introduction....................................................................................................................................................538
A.3.2 User agent role...............................................................................................................................................538
A.3.2.1 Major capabilities........................................................................................................................................539
A.3.2.2 SDP types....................................................................................................................................................540
A.3.2.3 Void 544
A.3.2.4 Void 544
A.3.3 Proxy role.......................................................................................................................................................544
A.3.3.1 Major capabilities........................................................................................................................................545
A.3.3.2 SDP types....................................................................................................................................................546
A.3.3.3 Void 550
A.3.3.4 Void 550
A.4 Profile definition for other message bodies as used in the present document.................................550
Annex B (normative): IP-Connectivity Access Network specific concepts when using GPRS to
access IM CN subsystem.....................................................................551
B.1 Scope..............................................................................................................................................551
B.2 GPRS aspects when connected to the IM CN subsystem................................................................551
B.2.1 Introduction....................................................................................................................................................551
B.2.2 Procedures at the UE......................................................................................................................................551
B.2.2.1 PDP context activation and P-CSCF discovery...........................................................................................551
B.2.2.1A Modification of a PDP context used for SIP signalling............................................................................553
B.2.2.1B Re-establishment of the PDP context for SIP signalling..........................................................................553
B.2.2.1C P-CSCF restoration procedure..................................................................................................................553
B.2.2.2 Session management procedures.................................................................................................................554
B.2.2.3 Mobility management procedures...............................................................................................................554
3GPP
3GPP TS 24.229 V9.3.1 (2010-03)13Release 9
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