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TR 26.980 (SA4)
Media Handling aspects
of Multi-Stream Multiparty Conferencing
for MTSI

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V15.0.0 (PDF)  2018/06  86 p.
V14.2.0  2017/03  88 p.
V13.0.0  2015/12  63 p.


Rapporteur:  Mr. Leung, Nikolai
See also:

This TR provides a study on the media handling aspects of Multi-stream Multiparty Conferencing for MTSI. The study focuses on enabling
  • support to receive multi-stream audio/video at the terminals in a multiparty conferencing,
  • support for at least two video contents, e.g. one main and one presentation,
  • talker ID provisioning,
  • compatibility with MTSI TS 26.114 and GSMA IR.94 (Video over LTE) and GSMA IR.92 (VoLTE), and
  • applicability to both mobile and fixed access terminals.
High-level use cases along with current limitations and recommendations are documented in the present document.

full Table of Contents for  TR 26.980  Word version:   15.0.0

 

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1  Scope [R13]Word-p. 7
2  References [R13]
3  Definitions and abbreviations [R13]Word-p. 9
4  Overview [R13]
5  Media Handling in Current 3GPP Conferencing [R13]
6  Use cases [R13]Word-p. 12
6.1  Overview
6.2  Use case A: Transcoding Free Continuous Presence
6.3  Use case B: Screen SharingWord-p. 14
6.4  Use Case C: Bandwidth HandlingWord-p. 17
6.5  Use Case D: Active Speaker OverrideWord-p. 21
6.6  Use Case E: Pausing Unused StreamsWord-p. 23
6.7  Use Case F: Conference Rate Adaptation ConsiderationsWord-p. 26
6.8  Use Case G: Multi-stream Audio Steering or PanningWord-p. 29
6.9  Use Case H: De-jitter Buffer HandlingWord-p. 30
6.10  Use Case I: Audio Spatialization based on head-trackingWord-p. 31
6.11  Use Case J: Mixing at the Rendering Device - Media Handling, Distribution via Multi-UnicastWord-p. 32
6.12  Use Case K: Mixing at the Rendering Device - Media Handling, Distribution via MulticastWord-p. 35
6.13  Use Case L: Mixing at the Rendering Device - Media Handling, Distribution via Single Source Multi-UnicastWord-p. 36
6.14  Use Case M: Provisioning of Talker IDWord-p. 45
6.15  Use Case N: Mixing at the Rendering Device - Media Handling, Concurrent Codec Capabilities ExchangeWord-p. 47
6.16  Use Case O: Media Distribution Without Conference Focus - Session Establishment AspectsUp
6.17  Use Case P: Codec Migration [R14]Word-p. 60
7  Conclusion [R13]Word-p. 64
A  SDP examples for Multi-stream Multiparty Conference Media Handling [R13]Word-p. 65
B  QoS for Multi-stream Multiparty Conference Media Handling [R14]Word-p. 80
C  Technical Background [R14]Word-p. 81
D  Change historyWord-p. 84

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