Content for TR 26.923 Word version: 18.0.0
2 References
3 Definitions and abbreviations
4 Overview of IMS-based Telepresence in 3GPP
5 Gap Analysis on Media Handling Aspects of IMS-based Telepresence
6 Conclusion
$ Change history
2 References p. 6
3 Definitions and abbreviations p. 8
3.1 Definitions p. 8
3.2 Abbreviations p. 9
4 Overview of IMS-based Telepresence in 3GPP p. 9
4.1 Introduction p. 9
4.2 Service Aspects p. 9
4.3 Core Network Aspects p. 11
4.4 Protocols and Architecture for IMS-based Telepresence p. 12
5 Gap Analysis on Media Handling Aspects of IMS-based Telepresence p. 16
5.1 Media Handling Aspects of CLUE p. 16
5.1.1 Introduction on CLUE p. 16
5.1.2 Media Handling Requirements for TP UE p. 17
5.1.3 Guidelines and Examples of SDP and CLUE for Telepresence p. 18
5.1.4 Session Setup and Control Procedures for TP UE p. 19
5.1.5 Gap Analysis p. 19
5.2 GSMA IR.39 IMS Profile for High Definition Video Conference p. 19
5.2.1 Introduction p. 19
5.2.2 Screen Sharing p. 20
5.2.3 Voice Codecs p. 20
5.2.4 Video Codecs p. 21
5.2.5 Gap Analysis p. 21
5.3 Media Handling Aspects of Telepresence from ITU-T SG16 p. 21
5.3.1 Functional Requirements p. 21
5.3.1.1 User Experience p. 21
5.3.1.2 Statistical Information Reporting p. 22
5.3.1.3 Network-Level Aspects p. 22
5.3.2 Audio/Video Parameters p. 22
5.3.2.0 General p. 22
5.3.2.1 Capture-Related Parameters p. 23
5.3.2.1.1 General parameters p. 23
5.3.2.1.2 Visual parameters p. 24
5.3.2.1.3 Audio parameters p. 25
5.3.2.1.4 Delay parameters p. 26
5.3.2.1.5 Multiple Source Capture parameters p. 26
5.3.2.2 Telepresence System Environment parameters p. 27
5.3.3 Gap Analysis p. 27
5.4 MPEG Codecs Relevant for Telepresence p. 27
5.4.1 MPEG-4 AAC-ELD p. 27
5.4.1.1 Introduction p. 27
5.4.1.2 Gap Analysis p. 27
5.4.2 MPEG Video Codecs p. 28
5.4.2.1 Introduction p. 28
5.4.2.2 Gap Analysis p. 28
6 Conclusion p. 28
6.1 Codecs p. 28
6.2 Media Handling Aspects p. 28
$ Change history p. 30
