Hi Behnam,
Thank you for the presentation of 11-25/0110r4. Sorry I did not have a chance to ask questions during the meeting.
Some questions and comments as follows:
- Slide 4, is it assumed that the issue of long tail latency is caused by lower RSSI received by the AP in the field ?
- Slide 5, Agree with your analysis. I think we should consider multiple ways to resolve the fairness concerns
- if STAa and STAb have used P-EDCA and acquired TXOP, then the P-EDCA mechanism should suspend STAa and STAb to continue using P-EDCA so as to provide
the fairness to other STAs. This can provide a chance for STAc with lower RSSI to acquire TXOP in the next run. We need to define a fairness rule for the STA that has used P-EDCA for TXOP acquisition.
- In addition, if we consider “defer time due based condition” for the STA with low RSSI to use P-EDCA, it could prevent a STA with high RSSI from acquiring
a TXOP first all the time, like in the slide 13, the STA closer to AP has higher chance to acquire TXOP.
- Slide 9, do you suggest to limit STAd to transmit RTS within 3 slots instead of 7 defined in D0.3?
- Slide 11, as a STA does not know whether other STAs would use P-EDCA, how does it decide whether to use P-EDCA for LL transmissions? For example,
5 STAs in RSSI range (-70 to -79). Also how does the AP control the number of STAs using P-EDCA not exceed the limit?
Best Regards
Yonggang
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