1、 ETSI TS 126 111 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Codec for circuit switched multimedia telephony service; Modifications to H.324 (3GPP TS 26.111 version 15.0.0 Release 15) TECHNICAL SPECIFICATION GLOBAL
2、 SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TS 126 111 V15.0.0 (2018-07)13GPP TS 26.111 version 15.0.0 Release 15Reference RTS/TSGS-0426111vf00 Keywords GSM,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 348 623 562 000
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9、o are trademarks registered and owned by the GSM Association. ETSI ETSI TS 126 111 V15.0.0 (2018-07)23GPP TS 26.111 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 informatio
10、n 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 ETSI
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13、eing the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. 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 Specific
14、ation (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). 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
15、. 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 present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted
16、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 except when used in direct citation. ETSI ETSI TS 126 111 V15.0.0 (2018-07)33GPP TS 26.111 version 15.0.0 Release 15Contents Intellectual
17、Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 General . 6g35 Document structure 6g36 Functional requirements . 6g36.1 Required elements 6g36.2 Infor
18、mation streams 7g36.3 Modem . 7g36.4 Multiplex 7g36.5 Control channel 7g36.6 Video channels . 7g36.6.1 MPEG-4 interface to multiplex . 10g36.6.2 H.264 (MPEG-4 AVC) interface to multiplex 10g36.7 Audio channels . 11g36.8 Data channels . 11g37 Terminal procedures . 11g38 Optional enhancements 11g39 In
19、teroperation with other terminals 11g310 Multipoint considerations . 11g311 Maintenance . 11g3Annex A (informative): Change History 12g3History 13g3ETSI ETSI TS 126 111 V15.0.0 (2018-07)43GPP TS 26.111 version 15.0.0 Release 15Foreword This Technical Specification (TS) has been produced by the 3rdGe
20、neration 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 identifying change of release da
21、te 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 changes of substance, i.e. techni
22、cal enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. Introduction In the present document is described additions, deletions, and changes made to ITU-T Recommendation H.324 10 with annex C for the purpose of
23、using that recommendation as a basis for the technical specification for circuit switched multimedia service in 3GPP networks. The present document does not address call setup procedures, but references to the specifications which cover call setup are found in 3GPP TS 26.110 11. ETSI ETSI TS 126 111
24、 V15.0.0 (2018-07)53GPP TS 26.111 version 15.0.0 Release 151 Scope In ITU-T Recommendation H.324 10 with annex C describes a generic multimedia codec for use in error-prone, wireless networks. The scope of the present document are the changes, deletions, and additions to those texts necessary to ful
25、ly specify a multimedia codec for use in 3GPP networks. Note that this implicitly excludes the network interface and call setup procedures. Also excluded are any general introductions to the system components. 2 References The following documents contain provisions which, through reference in this t
26、ext, constitute provisions 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. I
27、n the case of a reference 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 ITU-T Recommendation H.223: “Multiplexing protocol for low bit rate multimedia communication“. 2 I
28、TU-T Recommendation H.223 - Annex A: “Multiplexing protocol for low bit rate multimedia mobile communication over low error-prone channels“. 3 ITU-T Recommendation H.223 - Annex B: “Multiplexing protocol for low bit rate multimedia mobile communication over moderate error-prone channels“. 4 ITU-T Re
29、commendation H.223 - Annex C: “Multiplexing protocol for low bit rate multimedia mobile communication over highly error-prone channels“. 5 ITU-T Recommendation H.223 - Annex D: “Optional multiplexing protocol for low bit rate multimedia mobile communication over highly error-prone channels“. 6 ITU-T
30、 Recommendation H.245: “Control protocol for multimedia communication“. 7 ITU-T Recommendation G.723.1: “Dual rate speech coder for multimedia communication transmitting at 5,3 and 6,3 kbit/s“. 8 ITU-T Recommendation H.263: “Video coding for low bitrate communication“. 9 ITU-T Recommendation H.261:
31、“Video CODEC for audiovisual services at px64 kbit/s“. 10 ITU-T Recommendation H.324: “Terminal for low bitrate multimedia communication“. 11 3GPP TS 26.110: “Codec for Circuit Switched Multimedia Telephony Service; General description“. 12 3GPP TR 26.911: “Codec for circuit switched multimedia tele
32、phony service; terminal implementors Guide (Release 4)“. 13 ITU-T Recommendation X.691: “Information Technology - ASN.1 Encoding Rules - Specification of Packed Encoding Rules (PER)“. 14 ISO/IEC 14496-2: “Information technology - Coding of audio-visual objects - Part 2: Visual“. 15 3GPP TS 26.071: “
33、General description“. 16 3GPP TS 26.090: “Transcoding functions“. 17 3GPP TS 26.073: “Adaptive Multi-Rate (AMR); ANSI C source code“. ETSI ETSI TS 126 111 V15.0.0 (2018-07)63GPP TS 26.111 version 15.0.0 Release 1518 3GPP TS 26.171: “AMR Wideband Speech codec; General Description“. 19 ITU-T Recommend
34、ation H.264 (2003): “Advanced video coding for generic audiovisual services“ | ISO/IEC 14496-10:2003: “Information technology Coding of audio-visual objects Part 10: Advanced Video Coding“. 20 ITU-T Recommendation H.241 (2003): “Extended video procedures and control signals for H.300 series terminal
35、s“. 21 ITU-T Recommendation G.722.2 Annex F (2002): “AMR-WB usage in H.245“. 22 3GPP TS 26.201 : “Adaptive Multi-Rate Wideband (AMR-WB) speech codec ; Frame Structure.“ 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply
36、: H.324: ITU-T H.324 10 with annex C 3G-324M terminal: based on ITU-T H.324 10 recommendation modified by 3GPP for purposes of 3GPP circuit switched network based video telephony 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AMR Adaptive Multi-Rate AM
37、R-WB AMR Wide-Band AVC Advanced Video Codec FLC Fixed Length Code RVLC Reverse Variable Length Code DP Data PartitioningRM Resynchronization Marker MCU Multipoint Control Unit 4 General The present document contains any deviations to ITU-T H.324 10 required for the specification of 3G-324M Terminals
38、. 5 Document structure The structure of H.324 10 is followed in the present document. Where there are no differences in a specific section, that section is skipped. Where differences are minor, only the differences are described. Where major differences exist, the section is rewritten in the present
39、 document. It is important to note that for wireless terminals, Annex C of H.324 10 supersedes respective portions of the main body of H.324 10 For the present document, these modifications are treated as if they are part of the main body of H.324 10 Therefore, a reader must keep in mind both the ma
40、in body and Annex C of H.324 10 when reading the present document. 6 Functional requirements 6.1 Required elements 3G-324M implementations are not required to have each functional element except a wireless interface, H.223 1 with Annex A and B multiplex, and H.245 6 version 3 or later versions for s
41、ystem control protocol. ETSI ETSI TS 126 111 V15.0.0 (2018-07)73GPP TS 26.111 version 15.0.0 Release 153G-324M terminals offering audio communication shall support the AMR audio codec. Support for G.723.1 7 is not mandatory, but recommended. 3G-324M terminals offering video communication shall suppo
42、rt the H.263 8 video codec. Support for MPEG-4 simple profile and H.261 9 is optional. 3G-324M terminals shall support H.223 1 with annex A and annex B. 3G-324M terminals shall support at least 32 kbit/s minimum bit rate at the mux to wireless network interface. 6.2 Information streams V.25ter discu
43、ssion does not apply. 6.3 Modem Does not apply. 6.4 Multiplex 3G-324M terminals shall support H.223 1 with annex A and annex B. All other aspects shall follow H.324 10 with annex C. H.223 1 Annex C and D are optional. 6.5 Control channel No differences with H.324 10. Should it not be possible to sig
44、nal an element of the 3G-324M terminal using a published version of H.245 6, a procedure will be defined here. 6.6 Video channels Support for H.261 9 is optional. Support for MPEG-4 Visual is optional. When supported, MPEG-4 Visual codecs shall support Simple Profile Level 0. The FLC code 0000 1000
45、in Table G-1 “FLC table for profile_and_level_indication“ in ISO/IEC 14496-2 14 is assigned to it. Additional information can be found in 14. MPEG-4 Visual Simple Profile level 0 provides error concealment as part of the simple profile through Data Partitioning (DP), Reversible Variable Length Codin
46、g (RVLC), Resynchronization Marker (RM) and header extension code. MPEG-4 Visual is baseline compatible with H.263 8. When opening a logical channel for MPEG-4 Visual, configuration information (Visual Object Sequence Header, Visual Object Header, and Video Object Layer Header) shall be sent in the
47、decoderConfigurationInformation parameter. The same information shall also be sent in the MPEG-4 video bitstream. If the operational mode of MPEG-4 Visual encoder needs to be changed, the existing MPEG-4 video logical channel shall be closed and H.245 6 procedures for opening a new MPEG-4 video logi
48、cal channel shall be started. The new operational mode shall be indicated in the parameters of the new logical channel. Support for H.264 (MPEG-4 AVC) 19 is optional. When supported, H.264 codecs shall support Baseline level 1, without requirements on output timing conformance (Annex C of 19). Suppo
49、rt for H.264 19 shall be signalled according to H.241 chapter 8 “Capability Exchange signalling“ 20. When opening a logical channel for H.264 19, initial sequence parameter set(s) and picture parameter set(s) should be sent in a H.264 DecoderConfigurationInformation (DCI) defined in Table 1 below, amending H.241 parameters 20. Additionally, decoder capabilities may be sent in a H.264 AcceptRedundantSlices and a H.264 ProfileIOP defined in Table 2 and 3 bel
