1、 ETSI TS 1Digital cellular telecommUniversal Mobile TelIP MultimApplication- IMS Access GProce(3GPP TS 23.3TECHNICAL SPECIFICATION123 334 V13.5.0 (2016mmunications system (Phase elecommunications System (LTE; timedia Subsystem (IMS) on Level Gateway (IMS-ALG) s Gateway (IMS-AGW) interfaccedures desc
2、riptions .334 version 13.5.0 Release 1316-04) e 2+) (GSM); (UMTS); ace: 13) ETSI ETSI TS 123 334 V13.5.0 (2016-04)13GPP TS 23.334 version 13.5.0 Release 13Reference RTS/TSGC-0423334vd50 Keywords GSM,LTE,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00
3、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 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 v
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8、pean Telecommunications Standards Institute 2016. All 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 Partn
9、ers. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 123 334 V13.5.0 (2016-04)23GPP TS 23.334 version 13.5.0 Release 13Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The infor
10、mation 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 Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the
11、ETSI Secretariat. Latest updates are available on the 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
12、 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 by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3
13、GPP 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 http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the presen
14、t document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be 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 e
15、xcept when used in direct citation. ETSI ETSI TS 123 334 V13.5.0 (2016-04)33GPP TS 23.334 version 13.5.0 Release 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g31 Scope 9g32 References 9g33 Definitions, symbols and abbreviations . 12g33.1 Definitions 12g33.2 Symbo
16、ls 13g33.3 Abbreviations . 13g34 Architecture 14g34.1 Reference architecture 14g34.2 NAT Function 16g34.3 ATCF/ATGW Function . 16g34.4 eP-CSCF/eIMS-AGW Function . 17g35 Functional Requirements 17g35.1 General . 17g35.2 Gate Control 2 presented to TSG for approval; 3 or greater indicates TSG approved
17、 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 document. ETSI ETSI TS 123 334 V13.5.0 (2016-04)93GPP TS
18、23.334 version 13.5.0 Release 131 Scope Annex G of 3GPP TS 23.228 2 gives out an IMS Application Level Gateway (IMS-ALG) and IMS Access Media Gateway (IMS-AGW) based reference model to support NAPT-PT, gate control and traffic policing between IP-CAN and IMS domain. Figure 1.1: Scope of the specific
19、ation Figure 1.1 illustrates the reference model for Iq: - the dashed line represents the IP signalling-path with SIP (at Gm) as call/session control protocol between the UE and the P-CSCF (IMS-ALG); - the bold, horizontal line represents the IP media-path (also known as (IP) bearer-path or (IP) dat
20、a-path; the notion media is used as generic term for “IP application data“); and - the vertical line represents the Iq control-path with H.248 as gateway/policy control protocol between the IMS-ALG and the IMS-AGW (H.248 messages are transported over IP). The Iq reference point is between the P-CSCF
21、 (IMS-ALG) and the IMS-AGW. It conveys the necessary information that is needed to allocate, modify and release (IP) transport addresses. The present document defines the stage 2 description for the Iq reference point. The stage 2 shall cover the information flow between the P-CSCF (IMS-ALG) and IMS
22、-AGW. The protocol used over the Iq interface is the gateway control protocol according ITU-T Recommendation H.248 (which is specified for Iq by an H.248 profile according 3GPP TS 29.334 3). 2 References The following documents contain provisions which, through reference in this text, constitute pro
23、visions of the present document. 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. In the case of a reference
24、 to a 3GPP document (including a GSM document), a non-specific reference 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“. ETSI ETSI TS 123 334 V13.5.0 (2016-04)103GPP TS 23.334 version 13.5.0
25、 Release 132 3GPP TS 23.228: “IP Multimedia Subsystem (IMS), stage 2“. 3 3GPP TS 29.334: “IMS Application Level Gateway (IMS-ALG) IMS Access Gateway (IMS-AGW) Iq interface, stage 3“. 4 IETF RFC 2663: “IP Network Address Translator (NAT) Terminology and Considerations“. 5 3GPP TS 32.260: “Telecommuni
26、cation management; Charging management; IP Multimedia Subsystem (IMS) charging“. 6 IETF RFC 3556: “Session Description Protocol (SDP) Bandwidth Modifiers for RTP Control Protocol (RTCP) Bandwidth“. 7 IETF RFC 3605: “Real Time Control Protocol (RTCP) attribute in Session Description Protocol (SDP)“.
27、8 3GPP TS 23.205: “Bearer independent circuit-switched core network; Stage 2“. 9 ITU-T Recommendation H.248.1 (05/2002): “Gateway Control Protocol: Version 2“ including the Corrigendum1 for Version 2 (03/04). 10 IETF RFC 2216: “Network Element Service Template“. 11 3GPP TS 24.229: “IP Multimedia Cal
28、l Control Protocol based on SIP and SDP“. 12 3GPP TS 33.328: “IMS Media Plane Security“. 13 IETF RFC 4568: “Session Description Protocol (SDP) Security Descriptions for Media Streams“. 14 IETF RFC 3711: “The Secure Real-time Transport Protocol (SRTP)“. 15 IETF RFC 5124: “Extended Secure RTP Profile
29、for Real-time Transport Control Protocol (RTCP)-Based Feedback (RTP/SAVPF)“. 16 IETF RFC 3168: “The Addition of Explicit Congestion Notification (ECN) to IP“. 17 IETF RFC 6679: “Explicit Congestion Notification (ECN) for RTP over UDP“. 18 3GPP TS 23.237: “IP Multimedia subsystem (IMS) Service Contin
30、uity; Stage 2“. 19 3GPP TS 24.237: “IP Multimedia subsystem (IMS) Service Continuity; Stage 3“. 20 3GPP TS 29.162: “Interworking between the IM CN subsystem and IP networks“. 21 3GPP TS 26.114: “IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction“. 22 3GPP TS 22.153:
31、“Multimedia Priority Service“. 23 IETF RFC 5285: “A General Mechanism for RTP Header Extensions“. 24 IETF RFC 6236: “Negotiation of Generic Image Attributes in the Session Description Protocol (SDP)“. 25 IETF RFC 4975: “The Message Session Relay Protocol (MSRP)“. 26 IETF RFC 6714: “Connection Establ
32、ishment for Media Anchoring (CEMA) for the Message Session Relay Protocol (MSRP)“. 27 IETF RFC 4583: “Session Description Protocol (SDP) Format for Binary Floor Control Protocol (BFCP) Streams“. 28 IETF RFC 5246: “The Transport Layer Security (TLS) Protocol Version 1.2“. 29 IETF RFC 793: “Transmissi
33、on Control Protocol DARPA Internet Program Protocol Specification“. 30 IETF RFC 4145: “TCP-Based Media Transport in the Session Description Protocol (SDP)“. ETSI ETSI TS 123 334 V13.5.0 (2016-04)113GPP TS 23.334 version 13.5.0 Release 1331 IETF RFC 4582: “The Binary Floor Control Protocol (BFCP)“. 3
34、2 IETF RFC 6347: “Datagram Transport Layer Security Version 1.2“. 33 IETF RFC 7345: “UDP Transport Layer (UDPTL) over Datagram Transport Layer Security (DTLS)“. 34 IETF draft-schwarz-mmusic-sdp-for-gw-04: “SDP codepoints for gateway control“. Editors note: The above document cannot be formally refer
35、enced until it is published as an RFC. 35 GSM Association RCC.07: “Rich Communication Suite 5.1 Advanced Communications Services and Client Specification, Version 2.0, 03 May 2013“. 36 GSM Association RCC.07: “Rich Communication Suite 5.1 Advanced Communications Services and Client Specification, Ve
36、rsion 3.0, 25 September 2013“. 37 IETF RFC 4572: “Connection-Oriented Media Transport over the Transport Layer Security (TLS) Protocol in the Session Description Protocol (SDP)“. 38 ITU-T Recommendation H.248.84 (07/2012): “Gateway control protocol: NAT-traversal for peer-to-peer services“. 39 IETF
37、RFC 5245: “Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer Protocols“. 40 IETF RFC 5389: “Session Traversal Utilities for NAT (STUN)“. 41 IETF RFC 5766: “Traversal Using Relays around NAT (TURN): Relay Extensions to Session Tra
38、versal Utilities for NAT (STUN)“. 42 IETF RFC 5763: “Framework for Establishing a Secure Real-time Transport Protocol (SRTP) Security Context Using Datagram Transport Layer Security (DTLS)“. 43 IETF RFC 5764: “Datagram Transport Layer Security (DTLS) Extension to Establish Keys for the Secure Real-t
39、ime Transport Protocol (SRTP)“. 44 3GPP TS 24.371: “Web Real-Time Communications (WebRTC) client access to the IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification“. 45 IETF RFC 6135: “An Alternative Connection Model for the Message Session Relay Protocol (MSRP)“. 46 OMA-TS-CPM_Con
40、versation_Function-V2_0-20150113-C: “CPM Conversation Functions, Candidate Version 2.0 13 Jan 2015“. 47 IETF RFC 5746: “Transport Layer Security (TLS) Renegotiation Indication Extension“. 48 3GPP TS 33.310: “Network Domain Security (NDS); Authentication Framework (AF)“. 49 IETF RFC 7675: “Session Tr
41、aversal Utilities for NAT (STUN) Usage for Consent Freshness“. 50 IETF RFC 6716: “Definition of the Opus Audio Codec“. 51 3GPP TS 26.441: “Codec for Enhanced Voice Services (EVS); General Overview“. 52 3GPP TS 26.445: “Codec for Enhanced Voice Services (EVS); Detailed Algorithmic Description“. 53 IE
42、TF RFC 4566: “SDP: Session Description Protocol“. 54 IETF RFC 4867: “RTP Payload Format and File Storage Format for the Adaptive Multi-Rate (AMR) and Adaptive Multi-Rate Wideband (AMR-WB) Audio Codecs“. 55 IETF RFC 4566: “SDP: Session Description Protocol“. 56 IETF RFC 7587: “RTP Payload Format for
43、the Opus Speech and Audio Codec“. ETSI ETSI TS 123 334 V13.5.0 (2016-04)123GPP TS 23.334 version 13.5.0 Release 1357 IETF RFC 6544: “TCP Candidates with Interactive Connectivity Establishment (ICE)“. 58 IETF RFC 4571: “Framing Real-time Transport Protocol (RTP) and RTP Control Protocol (RTCP) Packet
44、s over Connection-Oriented Transport“. 59 IETF RFC 6947: “The Session Description Protocol (SDP) Alternate Connectivity (ALTC) Attribute“. 60 IETF RFC 5761: “Multiplexing RTP Data and Control Packets on a Single Port“. 61 IETF draft-ietf-rtcweb-data-channel-13: “WebRTC Data Channels“. Editors note:
45、The above document cannot be formally referenced until it is published as an RFC. 62 IETF draft-ietf-mmusic-msrp-usage-data-channel-03: “MSRP over Data Channels“. Editors note: The above document cannot be formally referenced until it is published as an RFC. 63 IETF RFC 4960: “Stream Control Transmi
46、ssion Protocol“. 64 IETF draft-ietf-mmusic-sctp-sdp-15: “Stream Control Transmission Protocol (SCTP)-Based Media Transport in the Session Description Protocol (SDP)“. Editors note: The above document cannot be formally referenced until it is published as an RFC. 65 IETF draft-ietf-mmusic-data-channe
47、l-sdpneg-06: “SDP-based Data Channel Negotiation“. Editors note: The above document cannot be formally referenced until it is published as an RFC. 66 IETF RFC 5939: “Session Description Protocol (SDP) Capability Negotiation“. 67 IETF RFC 6871: “Session Description Protocol (SDP) Media Capabilities N
48、egotiation“. 68 IETF RFC 4573: “MIME Type Registration for RTP Payload Format for H.224“. 69 ITU-T Recommendation H.224 (01/2005): “A real time control protocol for simplex applications using the H.221 LSD/HSD/MLP channels“. 70 ITU-T Recommendation H.281 (11/1994): “A far end camera control protocol
49、 for videoconferences using H.224“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 1 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 1. End-to-access edge security: media protection extending between an IMS UE and the first
