| Discussion and conclusion:
Postponed TD S2 153733 from meeting #112. Response drafted in TD S2 160591. Final response in TD S2 160618.
TD S2 160618 Reply LS on QoS for EVS VBR Codec Operation. (SA WG2) (Revision of TD S2 160591).
Abstract: To: SA WG4, RAN WG2.
Parallel discussion: The changes are: - delete 'some companies' from the last sentence - remove [draft].
Discussion and conclusion:
Revision of TD S2 160591. Response to TD S2 160005 and TD S2 160043. Agreed in parallel sessions. This was Block approved.
TD S2 160043 LS from RAN WG2: Reply LS on QoS for EVS VBR Codec Operation. (RAN WG2)
Abstract: RAN WG2 would like to thank SA WG4 for their LS on QoS for EVS-VBR Codec Operation.
RAN WG2 discussed possible benefits for the eNB to be aware of EVS-VBR mode with respect to EVS-CBR mode, which may be associated with the same GBR value. The admission control at the eNB is left to implementation.
Some companies believe it is beneficial for the eNB to be made aware of EVS-VBR mode: the difference in the average bit-rate between EVS-VBR and EVS-CBR can be used by the eNB to differentiate its determinations for admission control, e.g. the number of voice users and/or the number of best effort users to accommodate. However some other companies think it would not change the way how admission control is performed in their eNB implementation.
Please note that RAN WG2 did not discuss how the eNB should be made aware of EVS-VBR as the definition of QoS parameters is out of the scope of RAN WG2's responsibility. RAN WG2 believes SA WG2 can further study based on this input.
Action: RAN WG2 asks SA WG4 and SA WG2 to take the above information into account for their work.
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