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Content for  TR 26.980  Word version:  17.0.0

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2  Referencesp. 7

3  Definitions and abbreviationsp. 9

4  Overviewp. 10

5  Media Handling in Current 3GPP Conferencingp. 10

6  Use casesp. 12

6.1  Overviewp. 12

6.2  Use case A: Transcoding Free Continuous Presencep. 12

6.3  Use case B: Screen Sharingp. 14

6.4  Use Case C: Bandwidth Handlingp. 17

6.5  Use Case D: Active Speaker Overridep. 21

6.6  Use Case E: Pausing Unused Streamsp. 23

6.7  Use Case F: Conference Rate Adaptation Considerationsp. 26

6.8  Use Case G: Multi-stream Audio Steering or Panningp. 29

6.9  Use Case H: De-jitter Buffer Handlingp. 30

6.10  Use Case I: Audio Spatialization based on head-trackingp. 31

6.11  Use Case J: Mixing at the Rendering Device - Media Handling, Distribution via Multi-Unicastp. 32

6.12  Use Case K: Mixing at the Rendering Device - Media Handling, Distribution via Multicastp. 35

6.13  Use Case L: Mixing at the Rendering Device - Media Handling, Distribution via Single Source Multi-Unicastp. 36

6.14  Use Case M: Provisioning of Talker IDp. 45

6.15  Use Case N: Mixing at the Rendering Device - Media Handling, Concurrent Codec Capabilities Exchangep. 47

6.16  Use Case O: Media Distribution Without Conference Focus - Session Establishment Aspectsp. 59

6.17  Use Case P: Codec Migration |R14|p. 60

7  Conclusionp. 64

A  SDP examples for Multi-stream Multiparty Conference Media Handlingp. 65

B  QoS for Multi-stream Multiparty Conference Media Handling |R14|p. 80

C  Technical Background |R14|p. 81

$  Change historyp. 84


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