ETSI TS 129 334-2017 Digital cellular telecommunications system (Phase 2+) (GSM) Universal Mobile Telecommunications System (UMTS) LTE IMS Application Level Gateway (IMS-ALG) - IMS.pdf

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1、 ETSI TS 129 334 V14.2.0 (2017-03) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; IMS Application Level Gateway (IMS-ALG) - IMS Access Gateway (IMS-AGW); Iq Interface; Stage 3 (3GPP TS 29.334 version 14.2.0 Release 14) TECHNICAL S

2、PECIFICATION ETSI ETSI TS 129 334 V14.2.0 (2017-03)13GPP TS 29.334 version 14.2.0 Release 14Reference RTS/TSGC-0429334ve20 Keywords GSM,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 As

3、sociation but non lucratif enregistre la Sous-Prfecture de Grasse (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 p

4、rint versions of the present document shall not be modified without 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

5、 on a specific network drive within ETSI Secretariat. Users of the present document should be 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 https:/portal.etsi.org/TB/ETSIDeliverableStatus.asp

6、x If you find errors in the present document, please send your comment to 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

7、and microfilm except as authorized by written permission of ETSI. The content 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 2017. All

8、 rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade 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

9、and owned by the GSM Association. ETSI ETSI TS 129 334 V14.2.0 (2017-03)23GPP TS 29.334 version 14.2.0 Release 14Intellectual 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

10、 publicly available for ETSI members and non-members, and can be found in 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

11、 ETSI Web server (https:/ipr.etsi.org/). 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 000 314 (or the updates on the ETSI Web server) which are, or may be

12、, or may become, essential to the present document. Foreword 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 referen

13、ce 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 interpreted as described in cla

14、use 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 129 334 V14.2.0 (2017-03)33GPP TS 29.334 version 14.2.0 Release 14Contents Intellectual Property Rights 2g3

15、Foreword . 2g3Modal verbs terminology 2g3Foreword . 6g31 Scope 7g32 References 8g33 Definitions, symbols and abbreviations . 12g33.1 Definitions 12g33.2 Symbols 12g33.3 Abbreviations . 12g34 Applicability . 13g34.1 Architecture 13g35 Profile Description . 14g35.1 Profile Identification. 14g35.2 Summ

16、ary 14g35.3 Gateway Control Protocol Version 15g35.4 Connection model. 15g35.5 Context attributes . 15g35.6 Terminations . 15g35.6.1 Termination names . 15g35.6.1.1 IP Termination 15g35.6.1.1.1 ABNF Coding Overview and prose specification . 15g35.6.1.1.2 ASN.1 Coding Overview and prose specification

17、 . 16g35.6.2 Multiplexed terminations 17g35.7 Descriptors . 17g35.7.1 TerminationState Descriptor . 17g35.7.2 Stream Descriptor . 18g35.7.2.0 General 18g35.7.2.1 LocalControl Descriptor 18g35.7.3 Events descriptor 19g35.7.4 EventBuffer descriptor 21g35.7.5 Signals descriptor 21g35.7.6 DigitMap descr

18、iptor 23g35.7.7 Statistics descriptor . 23g35.7.8 ObservedEvents descriptor . 23g35.7.9 Topology descriptor 23g35.7.10 Error descriptor . 24g35.8 Command API 27g35.8.1 Add . 27g35.8.2 Modify 27g35.8.3 Subtract. 28g35.8.4 Move . 28g35.8.5 AuditValue 28g35.8.6 AuditCapabilities 28g35.8.7 Notify 29g35.

19、8.8 ServiceChange 29g35.8.9 Manipulating and auditing context attributes 31g35.9 Generic command syntax and encoding . 31g35.10 Transactions . 31g35.11 Messages 32g35.12 Transport 32g35.13 Security 33g35.14 Packages . 33g3ETSI ETSI TS 129 334 V14.2.0 (2017-03)43GPP TS 29.334 version 14.2.0 Release 1

20、45.14.1 Mandatory Packages . 33g35.14.2 Optional Packages 35g35.14.3 Package usage information . 37g35.14.3.1 Generic (g) 37g35.14.3.2 Base root (root) . 38g35.14.3.3 Differentiated Services (ds) . 39g35.14.3.4 Gate Management (gm) . 39g35.14.3.5 Traffic management (tman) . 41g35.14.3.6 Inactivity T

21、imer (it) . 42g35.14.3.7 IP Domain Connection (ipdc) . 42g35.14.3.8 Media Gateway Overload Control Package (ocp) . 43g35.14.3.9 Hanging Termination Detection (hangterm) . 43g35.14.3.10 Media Gateway Resource Congestion handling Package (chp) 44g35.14.3.11 IP Realm Availability (ipra) 44g35.14.3.12 I

22、P NAPT Traversal (ipnapt) 45g35.14.3.13 RTCP Handling Package (rtcph) . 45g35.14.3.14 Application Data Inactivity Detection (adid) 46g35.14.3.15 Explicit Congestion Notification for RTP-over-UDP Support (ecnrous) 47g35.14.3.16 MG Act-as STUN Server (mgastuns) . 49g35.14.3.17 Originate STUN Continuit

23、y Check (ostuncc) . 50g35.14.3.18 TCP basic connection control (tcpbcc) . 51g35.14.3.19 TLS basic session control (tlsbsc) . 52g35.14.3.20 Stream endpoint interlinkage (seplink) . 53g35.14.3.21 MG located Bearer Level ALG (mgbalg) . 54g35.14.3.22 STUN Consent Freshness (stnconfres) 54g35.14.3.23 Med

24、ia Grouping (mgroup) 56g35.14.3.24 SCTP basic connection control package (sctpbcc) 57g35.14.3.25 SCTP Re-configuration Stream Reset (sctpreset) . 58g35.15 Mandatory support of SDP and Annex C information elements 60g35.16 Optional support of SDP and Annex C information elements 63g35.17 Procedures 6

25、8g35.17.1 Formats and Codes . 68g35.17.2 Call Related Procedures 75g35.17.2.1 General 75g35.17.2.2 Reserve AGW Connection Point . 76g35.17.2.3 Configure AGW Connection Point . 82g35.17.2.4 Reserve and Configure AGW Connection Point . 91g35.17.2.5 Release AGW Termination . 100g35.17.2.6 Termination H

26、eartbeat Indication . 100g35.17.2.7 IP Bearer Released 101g35.17.2.8 Media Inactivity Notification 101g35.17.2.9 Change Through Connection 102g35.17.2.10 Change Flow Direction . 102g35.17.2.11 ECN Failure Indication . 103g35.17.2.12 ICE Connectivity Check Result Notification 103g35.17.2.13 ICE New P

27、eer Reflexive Candidate Notification 103g35.17.2.14 Notify TCP connection establishment Failure Indication . 104g35.17.2.15 Notify (D)TLS session establishment Failure Indication 104g35.17.2.16 STUN Consent Freshness Test Failure Notification . 105g35.17.2.17 Notify SCTP Stream Reset 105g35.17.2.18

28、Notify SCTP Stream Reset Result 106g35.17.3 Non-Call Related Procedures 106g35.17.3.1 General 106g35.17.3.2 IMS-AGW Out Of Service 107g35.17.3.3 IMS-AGW Communication Up 108g35.17.3.4 IMS-AGW Restoration . 108g35.17.3.5 IMS-AGW Register 109g35.17.3.6 IMS-AGW Re-Register . 109g35.17.3.7 IMS-ALG Order

29、ed Re-register . 110g35.17.3.8 IMS-ALG Restoration . 110g35.17.3.9 IMS-ALG Out of Service 111g35.17.3.10 Audit Value . 111g3ETSI ETSI TS 129 334 V14.2.0 (2017-03)53GPP TS 29.334 version 14.2.0 Release 145.17.3.11 Command Rejected . 113g35.17.3.12 AGW Capability Change 113g35.17.3.13 IMS-AGW Resource

30、 Congestion Handling Activate . 113g35.17.3.14 IMS-AGW Resource Congestion Handling Indication 114g35.17.3.15 Inactivity Timeout Activation . 114g35.17.3.16 Inactivity Timeout Indication . 115g35.17.3.17 Realm Availability Change Activation 115g35.17.3.18 Realm Availability Change Indication . 115g3

31、5.17.3.19 Termination Out Of Service 116g3Annex A (informative): Change history . 117g3History 119g3ETSI ETSI TS 129 334 V14.2.0 (2017-03)63GPP TS 29.334 version 14.2.0 Release 14Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The conte

32、nts 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 date and an increase in version number as follow

33、s: 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. technical enhancements, corrections, updates, etc. z

34、 the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 129 334 V14.2.0 (2017-03)73GPP TS 29.334 version 14.2.0 Release 141 Scope The present document describes the protocol to be used on the IMS Application Level Gateway (ALG) IMS Access Gate

35、way (IMS-AGW) interface. The basis for this protocol is the H.248 protocol as specified in ITU-T. The IMS architecture is described in 3GPP TS 23.228 2. The underlying reference model and stage 2 information is described in Annex G of 3GPP TS 23.228 2 and in 3GPP TS 23.334 23. This specification des

36、cribes the application of H.248 on the Iq interface (see Figure 1). Required extensions use the H.248 standard extension mechanism. In addition certain aspects of the base protocol H.248 are not needed for this interface and thus excluded by this profile. Figure 1: Reference model for IMS access The

37、 reference model for the IMS-ALG and the IMS-AGW supporting the ATCF/ATGW function is shown in Figure 1a below. UEIMS-AGW (ATGW)P-CSCFIMS-ALG(ATCF)NATIqIMSI/S-CSCFSCC ASMw/MxMSC ServerCS-MGWMcMbMbMw/I2GmPS accessCS accessMbPS-to-CS Access TransferFigure 1a: Reference model for IMS-ALG/IMS-AGW with A

38、TCF/ATGW function See 3GPP TS 23.237 38 subclause 5.2 for a comprehensive description of the reference model. The reference model for the P-CSCF enhanced for WebRTC (eP-CSCF) and the IMS-AGW enhanced for WebRTC (eIMS-AGW) to support WebRTC client access to IMS is shown in Figure 1b as below, see 3GP

39、P TS 23.228 2 Annex U for a comprehensive description of the reference model. P-CSCF GmMediaIqIMS-ALGIMS Access GatewayNATUEIP-CANScope of this specification.ETSI ETSI TS 129 334 V14.2.0 (2017-03)83GPP TS 29.334 version 14.2.0 Release 14PCEFNATIP-C AN WWSFW1 W2 UEWICI/S-CSCF eIMS-AGWIq Mw eP-CSCFH/V

40、-PCRFGx Rx W3 IMS-ALGWAF W4 W5 Figure 1b: Reference Architecture for eP-CSCF/eIMS-AGW supporting WebRTC access to IMS NOTE: The presence of dashed elements in the figure depends on the configuration. PCC functional elements are present only for EPC access with QoS. The corresponding PCC elements for

41、 fixed access are also optionally supported but not shown. The NAT in figure 1b is meant for non-cellular access to IMS. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (ide

42、ntified 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. In the case of a reference to a 3GPP document (including a GSM document), a non-specific r

43、eference implicitly 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 3GPP TS 23.228: “IP Multimedia Subsystem (IMS); Stage 2“. 3 ETSI TS 183 018 V3.5.1 (2009-07): “Telecommunications and Internet conv

44、erged Services and Protocols for Advanced Networking (TISPAN); Resource and Admission Control: H.248 Profile Version 3 for controlling Border Gateway Functions (BGF) in the Resource and Admission Control Subsystem (RACS); Protocol specification“. 4 ITU-T Recommendation H.248.37 (06/2008): “Gateway c

45、ontrol protocol: IP NAPT traversal package“. 5 ITU-T Recommendation H.248.57 (10/2014): “Gateway control protocol: RTP Control Protocol Package“. 6 ITU-T Recommendation H.248.43 (06/2008): “Gateway control protocol: Gate Management and Gate Control packages“. 7 ITU-T Recommendation H.248.53 (03/2009

46、): “Gateway control protocol: Traffic management packages“. 8 ITU-T Recommendation H.248.41 Amendment 1 (06/2008): “Gateway control protocol: IP domain connection package: IP Realm Availability Package“. ETSI ETSI TS 129 334 V14.2.0 (2017-03)93GPP TS 29.334 version 14.2.0 Release 149 ITU-T Recommend

47、ation H.248.36 (09/2005): “Gateway control protocol: Hanging Termination Detection package“. 10 ITU-T Recommendation H.248.1 (05/2002): “Gateway Control Protocol: Version 2“ including the Corrigendum1 for Version 2 (03/04). 11 ITU-T Recommendation H.248.14 (03/2009): “Gateway control protocol: Inact

48、ivity timer package“. 12 ITU-T Recommendation H.248.52 (06/2008): “Gateway control protocol: QoS support packages“. 13 ITU-T Recommendation H.248.11 (11/2002): “Gateway control protocol: Media gateway overload control package“. Inclusive Corrigendum 1 (06/2008) to H.248.11 “ Gateway control protocol

49、: Media gateway overload control package: Clarifying MG-overload event relationship to ADD commands“. 14 ITU-T Recommendation H.248.10 (07/2001): “Media gateway resource congestion handling package“. 15 IETF RFC 5234 (2008): “Augmented BNF for Syntax Specifications: ABNF“. 16 IETF RFC 4960 (2007): “Stream control transmission protocol“. 17 IETF RFC 4566 (2006): “SDP: Session Description Protocol“. 18 IETF RFC 4975 (2007): “The Message Session Relay Protocol (MSRP)“. 19 IETF RFC 3551 (2003): “RTP Profile for Audi