Content for TR 24.803 Word version: 12.0.0
4 Overview of telepresence using IMS
5 Alternative procedures for telepresence using IMS
6 Conclusion
A Example signalling flows
$ Change History
4 Overview of telepresence using IMS p. 8
4.1 General p. 8
4.2 Telepresence enhanced IMS characteristics p. 8
4.2.1 General p. 8
4.2.2 Spatial information p. 8
4.2.3 Media information p. 9
4.2.4 Meeting description p. 9
4.2.5 Presentation p. 9
4.2.6 Conference control p. 9
4.2.7 Information usage p. 9
5 Alternative procedures for telepresence using IMS p. 10
5.1 Brief introduction of protocols used in IM session supporting telepresence p. 10
5.1.1 Session Initiation Protocol (SIP) p. 10
5.1.2 Session Description Protocol (SDP) p. 10
5.1.3 ControLling mUltiple streams for tElepresence (CLUE) p. 10
5.1.4 Binary Floor Control Protocol (BFCP) p. 10
5.2 General procedures for IM session supporting telepresence p. 11
5.3 Initiation procedures for IM session supporting telepresence p. 11
5.3.1 Introduction p. 11
5.3.2 Origination procedures p. 11
5.3.3 Termination procedures p. 13
5.3.4 Media composition p. 13
5.3.5 Switching among multiple contents p. 14
5.3.6 UE with different capabilities p. 14
5.4 End of IM session supporting telepresence p. 14
5.5 Update of IM session supporting telepresence p. 15
5.5.1 Introduction p. 15
5.5.2 Originating an update procedure p. 15
5.5.3 Terminating an update procedure p. 16
5.6 Presentation during an IM session supporting telepresence p. 16
5.7 Interworking with IM session supporting telepresence p. 17
5.7.1 General p. 17
5.7.2 Interoperability between TP UE and non-TP UE p. 17
5.7.3 Interoperability between TP UEs with asymmetric capabilities p. 18
5.7.4 Interworking between different networks p. 18
5.8 Open issues and alternative options p. 18
5.8.1 RTP stream creation before completion of CLUE negotiation p. 18
5.8.1.0 General p. 18
5.8.1.1 Alternative 1: No media exchanged until completion of CLUE negotiation p. 19
5.8.1.2 Alternative 2: Transfer simple media contents p. 19
5.8.1.3 Alternative 3: Other usages like announcement p. 19
5.8.1.4 Conclusion p. 19
5.8.2 Telepresence CLUE handling in a MRF p. 20
5.8.2.0 General p. 20
5.8.2.1 Alternative 1: MRFC generates CLUE message p. 20
5.8.2.2 Alternative 2: MRFP generates CLUE message p. 20
5.8.3 Sequence of SDP and CLUE during updating p. 21
5.8.4 Media streams treatment after CLUE's removal p. 22
5.8.4.1 Options p. 22
5.8.4.2 Conclusion p. 22
5.8.5 SCTP connection status when CLUE is removed p. 22
5.8.5.1 Options p. 22
5.8.5.2 Conclusion p. 23
5.8.6 RTP multiplexing for multiple streams p. 23
5.8.6.1 Options p. 23
5.8.6.2 Conclusion p. 23
6 Conclusion p. 23
A Example signalling flows p. 24
A.1 Scope of signalling flows p. 24
A.2 Flows demonstrating the establishment of an IM conference supporting telepresence p. 25
A.2.1 Introduction p. 25
A.2.2 User creating an IMS conference supporting telepresence p. 25
A.2.3 User getting invited to an IM conference supporting telepresence p. 29
A.2.4 Updating during an IM conference supporting telepresence p. 31
A.3 Flows demonstrating an IM point to point call supporting telepresence p. 33
$ Change History p. 40
