8213 Osama The parameter Introduce definition and Revised add a – Aboulmagd HEMUEDCATimer[AC] describe its use including sentence to clarify seems to appear for the first how to set its value that it is set to the time in the draft on page value in the MU No proper definition was given EDCA Timer subfield and its role in channel acces in MU EDCA wasn't explained. parameter set element 8214 Osama Clause 27.2.3 doesn specify explain which counters are Revised in – Aboulmagd clearly when an EDCA for UL involved in obtaining the principle with the MU Capable STAs is obtained. TXOP. Does comment. Clarify the It focuses on the different HEMUEDCATimer[AC] spec by changing the parameter settings. only used to contrl the values spec text as in the of Cwmin, Cwmax, etc as proposed changes in implied in the last paragarph doc 204r0. of this clause. Need to be clear 8264 Pascal HEMUEDCATimer[AC] Please clarify when Revised Clarify that – VIGER uniformly count down to 0. Is countdown is executed. there can not be any this countdown continuously suspensions. Modify performed along time, or is the the sentence as countdown suspended in defined in the between each medium access proposed changes in (that means only counting fdoc 204r0. down during contention procedure periods) ? 8295 Patrice When a STA is in MU EDCA Proposal: "The HE Rejected this – Nezou mode, how the QoS data are based PPDU is built based on comment does not selected from the ACs ? the current backoff values of refer to this section, ACs. The backoff values but to subclause must be updated after the 27.10.4 A-MPDU transmission". with multiple TIDs where these rules are already defined. 8296 Patrice When a STA switches from Proposal: "The backoff values Rejected the spec – Nezou MU EDCA to EDCA, how the must be resetted and CW is currently says that backoff are restored ? set to CWmin when only the CWmin,max switching from MU EDCA to and AIFSN values are EDCA." updated, not the backoff nor the CW. The backoff and CW are updated on legacy procedures, using the updated parameters. The intent is not to reset CW and backoff values.
8213 Osama Aboulmagd The parameter HEMUEDCATimer[AC] seems to appear for the first time in the draft on page No proper definition was given and its role in channel acces wasn't explained. Introduce definition and describe its use including how to set its value Revised – add a sentence to clarify that it is set to the value in the MU EDCA Timer subfield in MU EDCA parameter set element 8214 Osama Aboulmagd Clause 27.2.3 doesn specify clearly when an EDCA for UL MU Capable STAs is obtained. It focuses on the different parameter settings. explain which counters are involved in obtaining the TXOP. Does HEMUEDCATimer[AC] only used to contrl the values of Cwmin, Cwmax, etc as implied in the last paragarph of this clause. Need to be clear Revised – in principle with the comment. Clarify the spec by changing the spec text as in the proposed changes in doc 204r0. 8264 Pascal VIGER HEMUEDCATimer[AC] uniformly count down to 0. Is this countdown continuously performed along time, or is the countdown suspended in between each medium access (that means only counting down during contention procedure periods) ? Please clarify when countdown is executed. Revised – Clarify that there can not be any suspensions. Modify the sentence as defined in the proposed changes in fdoc 204r0. 8295 Patrice Nezou When a STA is in MU EDCA mode, how the QoS data are selected from the ACs ? Proposal: "The HE PPDU is built based on the current backoff values of ACs. The backoff values must be updated after the transmission". Rejected – this comment does not refer to this section, but to subclause 27.10.4 A-MPDU with multiple TIDs where these rules are already defined. 8296 Patrice Nezou When a STA switches from MU EDCA to EDCA, how the backoff are restored ? Proposal: "The backoff values must be resetted and CW is set to CWmin when switching from MU EDCA to EDCA." Rejected – the spec currently says that only the CWmin,max and AIFSN values are updated, not the backoff nor the CW. The backoff and CW are updated based on legacy procedures, using the updated parameters. The intent is not to reset CW and backoff values.
11-17-0204-01-00ax-cid-for-27-2-3-mu-edca-parameters.docx