1、 ETSI TR 126 903 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); LTE; Improved video support for Packet Switched Streaming (PSS) and Multimedia Broadcast/Multicast Service (MBMS) Services (3GPP TR 26.903 version 15.0.0 Release 15) TECHNICAL REPORT ETSI ETSI TR 126 903 V15.0.0 (2
2、018-07)13GPP TR 26.903 version 15.0.0 Release 15Reference RTR/TSGS-0426903vf00 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-Pr
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9、I ETSI TR 126 903 V15.0.0 (2018-07)23GPP TR 26.903 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 availab
10、le 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 ETSI Web server
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13、ce 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 Report (TR) has been produced by ETSI 3rd Generation Partnership Project
14、(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. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be
15、 found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “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 prov
16、isions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 126 903 V15.0.0 (2018-07)33GPP TR 26.903 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 Referen
17、ces 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 7g34 General . 7g34.1 Introduction 7g34.2 Rel 6, 7 and 8 requirements for terminals supporting H.264 in MBMS and PSS 7g34.3 Working Assumptions 7g34.3.1 Codec profiles and levels 7g34.3.2 Resolutions . 8g34.3.2.1 Gene
18、ral 8g34.3.2.2 Resolutions for PC-based UEs 8g34.3.3 Bitrates 8g34.3.4 Frame Rates 8g34.3.5 Random access point frequency 8g34.3.6 Audio 8g34.3.7 Error control 8g34.3.8 Complexity . 8g34.3.9 Bandwidth efficiency 9g34.3.10 Reproduction of results . 9g34.3.11 Radio Assumptions . 9g34.3.11.1 MBMS Relea
19、se 9 9g35 Use Cases . 9g35.1 Use Cases for Baseline Terminals 9g35.2 Use Cases for Advanced Terminals 9g35.2.1 File download to Advanced terminals 9g35.2.2 Streaming to Advanced terminals . 10g35.2.3 Streaming to Baseline and Advanced Terminals 10g35.2.3.1 Broadcast of Baseline and Advanced Mobile T
20、V Services . 10g35.2.3.2 Broadcast of Baseline Mobile TV Services and Unicast Transmission of Advanced Mobile TV Services . 10g35.2.3.3 Unicast Transmission of Baseline and Advanced Mobile TV Services 10g35.2.4 File download to Baseline and Advanced Terminals 10g35.2.4.1 Introduction . 10g35.2.4.2 B
21、roadcast file delivery to baseline and advanced terminals 10g35.2.4.3 Broadcast file delivery to baseline terminals and unicast transmission to advanced terminals . 11g35.2.4.4 Unicast file delivery to baseline and advanced terminals 11g35.2.5 Streaming to Baseline Terminals and File Download to Adv
22、anced Terminals 11g35.2.5.1 Introduction . 11g35.2.5.2 Broadcast of Baseline and Advanced Mobile TV Services . 11g35.2.5.3 Broadcast of Baseline Mobile TV Services and Unicast Transmission of Advanced Mobile TV Services . 11g35.2.5.4 Unicast Transmission of Baseline and Advanced Mobile TV Services 1
23、1g35.3 Enhancements to the previous use cases 12g35.3.1 Video aspect ratio management 12g35.3.2 UE Power Saving and Fast Stream Switching in MBMS . 12g35.3.3 Graceful Degradation 12g35.3.3.1 Rate adaptation in PSS when entering bad reception conditions 12g35.3.3.2 Graceful Degradation in MBMS servic
24、es when entering bad reception conditions 12g3ETSI ETSI TR 126 903 V15.0.0 (2018-07)43GPP TR 26.903 version 15.0.0 Release 155.3.3.3 Graceful Degradation in Traffic Congestion . 12g35.3.3.4 Combined support of heterogeneous devices and Graceful Degradation 12g35.3.4 Conditional Access . 13g35.3.5 Ra
25、te and quality adaptation with predefined multi quality content originating from external networks 13g35.3.6 HD Support for Mobile PC-based UEs . 13g35.3.7 Playback on Alternate Displays 14g35.3.7.1 Mobile UE Playback Displayed on External Monitors and HDTVs . 14g35.3.7.2 Playback of Superdistribute
26、d files on dissimilar alternate UEs. 14g36 Evaluation of Support for Baseline Terminals . 14g37 Evaluation of Support for Advanced Terminals . 14g37.1 Solutions . 14g37.1.1 Scalable Video Coding . 14g37.1.1.1 Introduction . 14g37.1.1.2 Solution Configuration 16g37.1.1.3 Solution Integration Approach
27、es . 16g37.1.1.3.1 Rate Adaptation for PSS using SVC with priority-based transmission scheduling . 16g37.1.1.3.2 Unequal error protection with SVC . 18g37.1.2 H.264/AVC High Profile 18g37.1.2.1 Introduction . 18g37.1.2.2 Solution configuration . 19g38 Conclusions 19g3Annex A: Change history 20g3Hist
28、ory 21g3ETSI ETSI TR 126 903 V15.0.0 (2018-07)53GPP TR 26.903 version 15.0.0 Release 15Foreword This Technical Report has 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
29、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 follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for appr
30、oval; 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 the third digit is incremented when editorial only changes have been incorporated in the document. ETSI E
31、TSI TR 126 903 V15.0.0 (2018-07)63GPP TR 26.903 version 15.0.0 Release 151 Scope The present document provides an analysis of the future video capability requirements of streaming and multicast/broadcast services. The purpose of this document is two-fold. On the one hand, it studies the options to u
32、pgrade the minimal requirements for video reception and decoding. On the other hand, it studies use cases for support of more advanced UEs. The ultimate target of this study item is to recommend solutions for efficiently providing video support commensurate with UE and user capabilities and needs in
33、 PSS and MBMS services. 2 References The following documents contain provisions which, through reference in this text, 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 sp
34、ecific 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 reference implicitly refers to the latest version of that document in the same Release as the pres
35、ent document. 1 3GPP TS 26.346: “Multimedia Broadcast/Multicast Services (MBMS); Protocols and Codecs“. 2 3GPP TS 26.234: “Transparent End-to-End Packet Switched Streaming Service (PSS); Protocols and Codecs“. 3 ITU-T Recommendation H.264 (03/09), “Advanced video coding for generic audiovisual servi
36、ces“ | ISO/IEC 14496- 10:2009 Information technologyCoding of audiovisual objects part 10: Advanced Video Coding“. 4 T. Schierl, Y. Sanchez de la Fuente, C. Hellge, and T. Wiegand: “Priority-based Transmission Scheduling for Delivery of Scalable Video Coding over Mobile Channels,“ 3rd European Sympo
37、sium on Mobile Media Delivery (EUMOB), London, 2009. 5 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 x and the following apply. A term defined in the present
38、 document takes precedence over the definition of the same term, if any, in TR 21.905 5. advanced terminal: a user equipment terminal that permits rendering video at higher quality than common for UEs in the market at time of generation of the document. Typically display resolutions or VGA or higher
39、 are supported. Examples are netbooks or laptops. baseline terminal: a user equipment terminal that permits to render video at typical quality as available in the market at time of generation of the document. Typically display resolutions of QVGA are supported. ETSI ETSI TR 126 903 V15.0.0 (2018-07)
40、73GPP TR 26.903 version 15.0.0 Release 153.2 Abbreviations For the purposes of the present document, the abbreviations given in TR 21.905 5 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 5.
41、AVC Advanced Video Coding MBMS Multimedia Broadcast/Multicast Services PSS Packet Switched Streaming Service SVC Scalable Video Coding 4 General 4.1 Introduction This document reports on a number of use-cases, considerations, and technologies. Some of these have resulted in the recommendations inclu
42、ded in change requests to 1 and 2. 4.2 Rel 6, 7 and 8 requirements for terminals supporting H.264 in MBMS and PSS H.264 is one of the codecs defined in PSS and MBMS from Release 6. In release 6 PSS and MBMS, level 1b is recommended. QCIF at 15Hz is a common configuration of H.264 level 1b. In releas
43、e 7 and 8 MBMS and PSS, level 1.2 is recommended. QVGA at 15Hz is a common configuration of H.264 Level 1.2. NOTE: H.264 Baseline Profile Level 1.2 content is not decodable by a Level 1b decoder. H.264 baseline profile is not recommended in its entirety. The “constraint_set1_flag“ should be set to 1
44、, which implies a restricted subset of H.264 Baseline Profile. This restricted subset is also a subset of H.264 Main and High profiles. MBMS recommends only a single codec, namely H.264 Baseline profile, but other codecs that are allowed in PSS are also allowed in MBMS. Table 1: Overview of Video su
45、pport in Release 6, 7 and 8 PSS and MBMS H.263 profile 0 level 45 H.263 profile 3 level 45 MPEG-4 Visual Simple Profile Level 0b MPEG-4 Visual Simple Profile Level 3 H.264 Constrained Baseline profile Level 1b H.264 Constrained Baseline profile Level 1.2 PSS Release 6 Mandatory Recommended Recommend
46、ed No Support Recommended No Support PSS Release 7 and 8 Mandatory Recommended Allowed through Level 3 Recommended Allowed through level 1.2 Recommended MBMS Release 6 Allowed through PSS No Support No Support No Support Recommended No Support MBMS Release 7 and 8 Allowed through PSS No Support No S
47、upport No Support Allowed through level 1.2 Recommended 4.3 Working Assumptions 4.3.1 Codec profiles and levels A single profile/level combination is defined for baseline terminals, and another for high end terminals. In other words, the present document will recommend a set of settings for baseline
48、 terminals, and a set of settings for advanced terminals. ETSI ETSI TR 126 903 V15.0.0 (2018-07)83GPP TR 26.903 version 15.0.0 Release 154.3.2 Resolutions 4.3.2.1 General The following resolutions are examples of resolutions considered relevant for the improved video support work: QVGA (320x240) nHD
49、 (640x360) VGA (640x480) HVGA (480x320) WQVGA (400x240) SD (720x576 and 720x480) 4.3.2.2 Resolutions for PC-based UEs It is anticipated the following resolutions will be needed to support connected mobile PCs SD (720x576 and 720x480) XGA (1024768) 720p (1280720) WXGA (1366768) 1080p (19201080) 4.3.3 Bitrates Analysis should be performed between a minimum video bitrate of 128 kbps and a maximum of 384 kbps for baseline terminals, and for advanced terminals 2 Mbps for MBMS, and 10 Mbps for other cases. 4.3.4 Frame Rates Minimal Video Frame Rate 12.5Hz
