Draft report ran wg4

R4-021686 Response to LS on Rate Adaptation of AMR Codec (TSG RAN WG2, R2-023158)

This LS is sent to SA WG4, cc RAN WG4. This LS was received during the meeting.

No actions required from WG4

Decision: The LS is noted

R4-021691 LS(#2) on Rate Adaptation of AMR Codec (Response to R2-023158) (TSG SA WG4, S4-020720)

This LS is sent to RAN WG2, cc WG4. This LS was received during the meeting.

SA WG4 requires WG4 to revise/modify the requirement in 25.133 for Tadapt (the time it takes for higher layers to provide data to MAC in a new supported bitrate) to cope with the step by step change of AMR mode. This relates to the comment made by NEC before (R4-021423).

Sari Korpela (Nokia) noted that the solution proposed is not viable, a bigger change to the RRM procedures is required, affecting other specifications than 25.133. It is agreed to produce a response LS and send it as soon as possible so it can be seen by SA4 in its meeting this week (R4-021716).

Decision: The LS is noted
R4-021593 LS on coexistence Between IMT-2000 TDD and FDD Radio Interface Technologies Within the Frequency Range 2 500-2 690 MHz Operating in Adjacent Bands and in the Same Geographical Area (ITU-R Ad Hoc)

Nokia noted that sec.5 of the draft report on Mitigation is referring 3GPP specifications 25.104 25.105, it seems that ITU would require 3GPP to look after these parts in particular. Nokia notes that there are a few wrong statements and assumptions, so a response is required. However, the deadline from ITU allows WG4 to take more time to examine the issue, the response doesn't have to be produced during this meeting.

It is clarified that the answer has to go through TSG RAN.

Claudio Guerrini (Tilab/TIM) explained that he will send to the email reflector a proposal for a deadline for contributions to ITU-R.

Decision: The LS is noted