1、 ETSI TS 126 223 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); LTE; Telepresence using the IP Multimedia Subsystem (IMS); Media handling and interaction (3GPP TS 26.223 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 126 223 V15.0.0 (2018-07)13GPP TS 26.223 ver
2、sion 15.0.0 Release 15Reference RTS/TSGS-0426223vf00 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 7
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9、(2018-07)23GPP TS 26.223 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and no
10、n-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 ETSI Web server (https:/ipr.etsi.org/). Pu
11、rsuant 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, or may become, essential to the present d
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13、adename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present
14、 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 GSM, UMTS, 3GPP and ETSI identities can be found under http:/
15、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 clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of p
16、rovisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 126 223 V15.0.0 (2018-07)33GPP TS 26.223 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 Refe
17、rences 5g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 7g34 System Description 8g34.1 Overview 8g34.2 TP UE . 9g35 Media Codecs . 10g35.1 Speech 10g35.2 Video 10g35.3 Real-time Text 12g36 Media Configuration 12g37 Data Transport 13g37.1 Introduction 13g37.2 RTP Payload
18、 Formats for TP UEs 13g38 Audio/Video Parameters 13g38.1 Overview 13g38.2 Capture-Related Parameters . 14g38.2.1 General Parameters . 14g38.2.2 Visual Parameters . 15g38.2.3 Audio Parameters 16g38.2.4 Delay Parameters 16g38.2.5 Multiple Source Capture Parameters 17g38.3 Telepresence System Environme
19、nt Parameters 17g39 Interworking . 17g310 Jitter Buffer Management . 18g311 Packet Loss Handling . 18g312 Media Adaptation . 18g313 Network Preference Management Object 18g314 Quality of Experience . 18g3Annex A (informative): SDP and CLUE Examples . 19g3A.1 TP Session Setup with CLUE-Controlled Vid
20、eo Support 19g3A.2 TP Session Setup with CLUE-Controlled Audio Support . 29g3A.3 Interworking between TP UE and MTSI UE . 37g3Annex B (informative): Change history . 41g3History 42g3ETSI ETSI TS 126 223 V15.0.0 (2018-07)43GPP TS 26.223 version 15.0.0 Release 15Foreword This Technical Specification h
21、as been produced by the 3rdGeneration Partnership Project (3GPP). The contents 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 ide
22、ntifying 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; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all chan
23、ges 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 126 223 V15.0.0 (2018-07)53GPP TS 26.223 version 15.0.0 Release 151 Scope The present document specifies a clien
24、t for the IMS-based telepresence service supporting conversational speech, video and text transported over RTP. Telepresence is defined as a conference with interactive audio-visual communications experience between remote locations, where the users enjoy a strong sense of realism and presence betwe
25、en all participants (i.e. as if they are in same location) by optimizing a variety of attributes such as audio and video quality, eye contact, body language, spatial audio, coordinated environments and natural image size. A telepresence system is defined as a set of functions, devices and network el
26、ements which are able to capture, deliver, manage and render multiple high quality interactive audio and video signals in a telepresence conference. An appropriate number of devices (e.g. cameras, screens, loudspeakers, microphones, codecs) and environmental characteristics are used to establish tel
27、epresence. The media handling capabilities of a telepresence client (TP UE) are specified in the present document. A TP UE supports Multimedia Telephony Service for IMS (MTSI) UE media handling capabilities 2, but it also supports more advanced media handling capabilities. The media handling aspects
28、 of a TP UE within the scope of the present document include media codecs, media configuration and session control, data transport, audio/video parameters, and interworking with MTSI. 2 References The following documents contain provisions which, through reference in this text, constitute provisions
29、 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
30、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“. 2 3GPP TS 26.114: “IP Multimedia Subsystem (IMS); Multimedia telephony
31、; Media handling and interaction“. 3 3GPP TS 22.228: “Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1“. 4 3GPP TS 24.229: “IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage
32、 3“. 5 3GPP TS 24.147: “Conferencing using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3“. 6 3GPP TS 24.103: “Telepresence using the IP Multimedia (IM) Core Network (CN) Subsystem (IMS); Stage 3“. 7 draft-ietf-clue-framework-23 (September 2015): “Framework for Telepresence Multi-Stream
33、s“. 8 draft-ietf-clue-datachannel-10 (September 2015): “CLUE Protocol Data Channel“. 9 draft-ietf-clue-signaling-06 (August 2015): “CLUE Signaling“. 10 draft-ietf-clue-data-model-schema-10 (June 2015): “An XML Schema for the CLUE data model“. 11 draft-ietf-clue-protocol-06 (October 2015): “CLUE Prot
34、ocol“. 12 draft-ietf-clue-rtp-mapping-05 (October 2015): “Mapping RTP streams to CLUE media captures“. 13 draft-ietf-mmusic-sctp-sdp-14 (March 2015): “Stream Control Transmission Protocol (SCTP) Based Media Transport in the Session Description Protocol (SDP)“. ETSI ETSI TS 126 223 V15.0.0 (2018-07)6
35、3GPP TS 26.223 version 15.0.0 Release 1514 draft-ietf-mmusic-data-channel-sdpneg-05 (October 2015): “SDP-based Data Channel Negotiation“. 15 IETF RFC 8261 (November 2017): “DTLS Encapsulation of SCTP Packets“, M Tuexen, R. Stewart, R. Jesup and S. Loreto. 16 ITU-T Recommendation H.264 (04/2013): “Ad
36、vanced video coding for generic audiovisual services“. 17 ITU-T Recommendation H.265 (12/2016): “High efficiency video coding“. 18 IETF RFC 6184 (2011): “RTP Payload Format for H.264 Video“, Y.-K. Wang, R. Even, T. Kristensen, R. Jesup. 19 IETF RFC 7798 (2016): “RTP Payload Format for High Efficienc
37、y Video Coding (HEVC)“, Y.-K. Wang, Y. Sanchez, T. Schierl, S. Wenger, M. M. Hannuksela. 20 IETF RFC 3264 (2002): “An Offer/Answer Model with the Session Description Protocol (SDP)“, J. Rosenberg and H. Schulzrinne. 21 draft-ietf-mmusic-sdp-simulcast-01 (July 2015): “Using Simulcast in SDP and RTP S
38、ession“. 22 Recommendation ITU-T H.241 (02/2012): “Extended video procedures and control signals for ITU-T H.300-series terminals “. 23 IETF RFC 6236 (2011): “Negotiation of Generic Image Attributes in the Session Description Protocol (SDP) “, I. Johansson and K. Jung. 24 Recommendation ITU-T H.245
39、(05/2011): “Control protocol for multimedia communication“. 25 IETF RFC 4566 (2006): “SDP: Session Description Protocol“, M. Handley, V. Jacobson and C. Perkins. 26 IETF RFC 6464: “A Real-time Transport Protocol (RTP) Header Extension for Client-to-Mixer Audio Level Indication“. 27 3GPP TS 26.441: “
40、Codec for Enhanced Voice Services (EVS); General Overview“. 28 3GPP TS 26.442: “Codec for Enhanced Voice Services (EVS); ANSI C code (fixed-point)“. 29 3GPP TS 26.445: “Codec for Enhanced Voice Services (EVS); Detailed Algorithmic Description“. 30 3GPP TS 26.450: “Codec for Enhanced Voice Services (
41、EVS); Discontinuous Transmission (DTX)“. 31 3GPP TS 26.171: “Speech codec speech processing functions; Adaptive Multi-Rate - Wideband (AMR-WB) speech codec; General description“. 32 3GPP TS 26.190: “Speech codec speech processing functions; Adaptive Multi-Rate - Wideband (AMR-WB) speech codec; Trans
42、coding functions“. 33 3GPP TS 26.173: “ANCI-C code for the Adaptive Multi Rate - Wideband (AMR-WB) speech codec“. 34 3GPP TS 26.204: “Speech codec speech processing functions; Adaptive Multi-Rate - Wideband (AMR-WB) speech codec; ANSI-C code“. 35 3GPP TS 26.071: “Mandatory Speech Codec speech proces
43、sing functions; AMR Speech CODEC; General description“. 36 3GPP TS 26.090: “Mandatory Speech Codec speech processing functions; Adaptive Multi-Rate (AMR) speech codec; Transcoding functions“. 37 3GPP TS 26.073: “ANSI C code for the Adaptive Multi Rate (AMR) speech codec“. 38 3GPP TS 26.104: “ANSI-C
44、code for the floating-point Adaptive Multi Rate (AMR) speech codec“. 39 Recommendation ITU-T F.734 (10/2014): “Definitions, requirements, and use cases for Telepresence Systems“. ETSI ETSI TS 126 223 V15.0.0 (2018-07)73GPP TS 26.223 version 15.0.0 Release 1540 Recommendation ITU G.1091 (10/2014): “Q
45、uality of Experience requirements for telepresence services“. 41 Recommendation ITU-T H.TPS-AV (02/2015): “Audio/video parameters for telepresence systems “. 42 Recommendation ITU-T H.420 (10/2014): “Telepresence System Architecture“. 43 Recommendation ITU-T H.323 (12/2009): “Packet-based multimedia
46、 communication systems“. 44 3GPP TS 26.093: “Mandatory speech codec speech processing functions; Adaptive Multi-Rate (AMR) speech codec; Source controlled rate operation“. 45 3GPP TS 26.193: “Speech codec speech processing functions; Adaptive Multi-Rate - Wideband (AMR-WB) speech codec; Source contr
47、olled rate operation“. 46 3GPP TS 26.446: “Codec for Enhanced Voice Services (EVS); AMR-WB Backward Compatible Functions“. 47 3GPP TS 26.443: “Codec for Enhanced Voice Services (EVS); ANSI C code (floating-point)“. 48 IETF RFC 4574: “The Session Description Protocol (SDP) Label Attribute“. 3 Definit
48、ions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in 3GPP 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 3GPP TR 21.905 1. Conference: An IP m
49、ultimedia session with two or more participants. Each conference has a “conference focus“. A conference can be uniquely identified by a user. Examples for a conference could be a Telepresence or a multimedia game, in which the conference focus is located in a game server. IM session: An IP multimedia (IM) session is a set of multimedia senders and receivers and the data streams flowing from senders to receivers. IP multimedia sessions are supported by the IP multimedia CN Sub
