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TR 25.862
RAB support for IMS

3GPP‑Page
V6.0.0 (Wzip)  2005/07  27 p.
Rapporteur:
Mr. Mikola, Juha

full Table of Contents for  TR 25.862  Word version:  6.0.0

1Scope  p. 5
2References  p. 5
3Definitions  p. 6
3.1Abbreviations  p. 6
3.2Terms  p. 6
4Background and 1ntroduction  p. 6
4.1General  p. 6
4.2Application flows for support of Voice Calls over IMS  p. 7
4.2.1Characteristics of the Application Flows  p. 7
4.3RAB Requirements for Voice Call over IMS  p. 8
4.3.1Bit rate requirements  p. 8
4.3.2Handling of RTCP flow  p. 8
4.4Issues to be addressed  p. 9
4.4.1RTCP Handling  p. 9
4.4.2RTP(RTCP)/UDP/IPv6 Header Handling  p. 9
4.4.3Signaling RAB for SIP  p. 9
4.4.4RAB Parameters  p. 10
4.4.5Other Issues  p. 10
5Overview of Optimization proposals  p. 10
5.2RTCP flow multiplexed on the same PDP context and on the same Radio Bearer as RTP flow  p. 10
5.3RTCP flow and RTP flow separated on different PDP contexts  p. 14
5.4RTCP flow multiplexed on the same PDP context as that of RTP flow but carried over separate Radio Bearers  p. 16
5.4.1Using two PDCP entities  p. 16
5.4.2Using single PDCP entity  p. 18
5.5RTCP removal  p. 19
5.6Variable size RTP header handling  p. 20
5.7Signalling handling  p. 22
6Conclusions  p. 22
7Recommendation  p. 22
ALink level simulations for secondary scrambling code solution:  p. 23
A.1Background Information  p. 23
A.1.1Requirements for SSC Solution  p. 23
A.1.2Assumptions  p. 23
A.1.2.1RTCP handling  p. 23
A.1.2.2SIP handling  p. 23
A.1.2.3RAB optimization  p. 23
A.1.2.4Extent of SSC transmissions  p. 24
A.2Simulation Results Summary  p. 25
BChange history  p. 26

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