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TECHNICAL SPECIFICATIONION
Universal Mobile Telelecommunications System ( (UMTS);
LTE;
Tranansparent end-to-end
Packet-switcchhed Streaming Service (PSS)S);
Prorotocols and codecs
(3GPP TS 26.2.234 version 13.2.0 Release 13 13)
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3GPP TS 26.234 version 13.2.0 Release 13 1 ETSI TS 126 234 V13.2.0 (2016-08)
Reference
RTS/TSGS-0426234vd20
Keywords
LTE,UMTS
ETSI
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ETSI
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3GPP TS 26.234 version 13.2.0 Release 13 2 ETSI TS 126 234 V13.2.0 (2016-08)
Intellectual 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 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 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, 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 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
.
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
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TS 26.234 version 13.2.0 Release 13 3 ETSI TS 126 234 V13.2.0 (2016-08)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 9
Introduction . 9
1 Scope . 10
2 References . 10
3 Definitions and abbreviations . 15
3.1 Definitions . 15
3.2 Abbreviations . 15
4 System description . 17
5 Protocols . 19
5.1 Session establishment . 19
5.2 Capability exchange . 19
5.2.1 General . 19
5.2.2 The device capability profile structure. 19
5.2.3 Vocabularies for PSS . 20
5.2.3.1 General . 20
5.2.3.2 PSS base vocabulary . 20
5.2.3.2.1 PssCommon component . 20
5.2.3.2.2 Streaming component . 22
5.2.3.2.3 ThreeGPFileFormat component . 29
5.2.3.2.4 Void . 32
5.2.3.3 Attributes from UAProf . 32
5.2.4 Extensions to the PSS schema/vocabulary . 33
5.2.4.1 Vocabulary definitions . 33
5.2.4.2 Backward compatibility . 34
5.2.5 Signalling of profile information between client and server . 34
5.2.6 Merging device capability profiles . 34
5.2.7 Profile transfer between the PSS server and the device profile server . 35
5.3 Session set-up and control . 35
5.3.1 General . 35
5.3.2 RTSP . 35
5.3.2.1 The 3GPP-Link-Char header . 36
5.3.2.2 The 3GPP-Adaptation header. 37
5.3.2.3 The Quality of Experience headers . 37
5.3.2.3.1 Protocol initiation and termination . 37
5.3.2.3.2 Metrics feedback . 39
5.3.2.3.3 Metrics feedback over HTTP . 40
5.3.2.3.3.0 Requirements and semantics . 40
5.3.2.3.3.1 XML Syntax for a QoE Report . 40
5.3.2.3.3.2 Example XML for the QoE Report . 41
5.3.2.4 Video buffering headers . 42
5.3.3 SDP . 42
5.3.3.1 General . 42
5.3.3.2 Additional SDP fields . 43
5.3.3.3 The 'alt' and 'alt-default-id' attributes . 46
5.3.3.4 The session level grouping attribute, 'alt-group' . 47
5.3.3.5 The bit-rate adaptation support attribute, '3GPP-Adaptation-Support' . 47
5.3.3.6 The Quality of Experience support attribute, "3GPP-QoE-Metrics" . 48
5.3.3.7 The asset information attribute, "3GPP-Asset-Information" . 48
5.3.3.8 OMA-DM Configuration of QoE Metrics . 49
ETSI
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3GPP TS 26.234 version 13.2.0 Release 13 4 ETSI TS 126 234 V13.2.0 (2016-08)
5.3.3.8.0 General . 49
5.3.3.8.1 QoE metrics reporting management object . 49
5.3.3.8.2 QoE reporting rule definition . 54
5.4 MIME media types . 54
5.5 Extension for Fast Content Switching and Start-up . 56
5.5.1 Introduction. 56
5.5.2 Extensions to RTSP 1.0 . 56
5.5.2.1 Introduction . 56
5.5.2.2 Capability Handling . 56
5.5.2.2.1 Introduction . 56
5.5.2.2.2 Definition of the 'Supported' RTSP Header Field . 56
5.5.2.3 SSRC in the 'RTP-Info' RTSP Header Field . 57
5.5.2.4 Semantics of RTSP PLAY method . 58
5.5.3 Start-up . 58
5.5.4 Fast Content Switching . 58
5.5.4.1 Introduction . 58
5.5.4.2 'Switch-Stream' RTSP Header Field . 58
5.5.4.3 Switching to new content with available SDP . 59
5.5.4.4 Switching to new content without SDP . 60
5.5.4.5 Switching Media described in one SDP . 60
5.5.4.6 Adding Media Components to an ongoing session . 61
5.5.4.7 Removing Media Components from an ongoing session . 61
5.6 Extension for Time-Shifting Support . 61
5.6.1 Introduction. 61
5.6.2 General Description . 62
5.6.2a Extensions to RTSP 1.0 . 62
5.6.3 Accept-Ranges . 62
5.6.4 Signalling Time Shifting Ranges . 63
5.6.5 Timeshift buffer status updates . 64
5.7 Support for Trick Mode Operations . 64
5.8 Session Update . 65
6 Data transport . 66
6.1 Packet based network interface . 66
6.2 RTP over UDP/IP . 66
6.2.1 General . 66
6.2.2 RTP profiles . 67
6.2.3 RTP and RTCP extensions . 67
6.2.3.1 RTCP extended reports . 67
6.2.3.2 RTCP App packet for client buffer feedback (NADU APP packet) . 67
6.2.3.3 RTP retransmission . 69
6.2.3.3.1 General . 69
6.2.3.3.2 Multiplexing scheme . 69
6.2.3.3.3 RTCP retransmission request . 69
6.2.3.3.4 Congestion control and usage with rate adaptation . 69
6.2.4 RTP payload formats . 69
6.2.5 Coordination of Video Orientation . 70
6.3 HTTP over TCP/IP . 70
6.4 Transport of RTSP. 71
7 Codecs . 71
7.1 General . 71
7.2 Speech . 71
7.3 Audio . 71
7.3a Synthetic audio . 72
7.4 Video . 72
7.4.1 General video decoder requirements. 72
7.4.2 Output timing and buffer model . 73
7.4.3 Television services . 73
7.4.4 Stereoscopic 3D Video . 73
7.5 Still images . 74
7.6 Bitmap graphics . 74
ETSI
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3GPP TS 26.234 version 13.2.0 Release 13 5 ETSI TS 126 234 V13.2.0 (2016-08)
7.7 Vector graphics . 74
7.8 Text . 75
7.9 Timed text . 75
7.10 3GPP file format . 75
7.11 Timed graphics . 75
8 Scene description . 75
8.1 General . 75
8.2 Void . 76
8.3 Void . 76
9 3GPP file format (interchange format for MMS) . 76
10 Adaptation of continuous media . 76
10.1 General . 76
10.2 Bit-rate adaptation . 76
10.2.1 Link-rate estimation . 76
10.2.1.1 Initial values . 76
10.2.1.2 Regular information sources . 77
10.2.2 Transmission adaptation . 77
10.2.3 Signalling for client buffer feedback . 77
10.3 Issues with deriving adaptation information (informative) . 78
11 Quality of Experience . 80
11.1 General . 80
11.2 QoE metrics . 80
11.2.0 General . 80
11.2.1 Corruption duration metric . 80
11.2.1.1 Default reporting format . 80
11.2.1.2 XML reporting format . 81
11.2.2 Rebuffering duration metric . 81
11.2.2.1 Default reporting format . 81
11.2.2.2 XML reporting format . 82
11.2.3 Initial buffering duration metric . 82
11.2.3.1 Default reporting format . 82
11.2.3.2 XML reporting format . 82
11.2.4 Successive loss of RTP packets . 82
11.2.4.1 Default reporting format . 82
11.2.4.2 XML reporting format . 83
11.2.5 Frame rate deviation . 83
11.2.5.1 Default reporting format . 83
11.2.5.2 XML reporting format . 83
11.2.6 Jitter duration . 83
11.2.6.1 Default reporting format . 83
11.2.6.2 XML reporting format . 84
11.2.7 Content Switch Time . 84
11.2.7.1 Default reporting format . 84
11.2.7.2 XML reporting format . 84
11.2.8 Average Codec Bitrate . 84
11.2.8.1 Default reporting format . 84
11.2.8.2 XML reporting format .
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