SP: Do you support that any PPDU transmitted in 40MHz is taken into account to in the calculation of the channel utilization filed of 40MHz in Extended BSS load element? Yes: 13 No: 0 Proposed Resolution: Revised. Delete “VHT” from all “VHT 40 MHz Utilization” terminologies and delete “VHT” from all T_VHT40,busy terminologies in 8.4.2.162 Extended BSS Load element CID Commenter Clause Number Page Comment Proposed Change Resolution 6260 Brian Hart 8.4.2.163 84 Wide Bandwidht Ch Switch is also present in Extended Ch Sw Announcement frames Add Revised Discussion: Commenter is correct. Wide Bandwidth Channel Switch element is also included in Extended Cahnnel Switch Annoucement frame. Proposed Resolution: Revised. In P83 L38, add Extended Channel Switch Announcement frame as the following, From “The Wide Bandwidth Channel Switch element is included in Channel Switch Announcement frames, as described in 8.5.2.6 (Channel Switch Announcement format), and TDLS Channel Switch Request frames, as described in 8.5.13.7 (TDLS Channel Switch Request frame format).” To “The Wide Bandwidth Channel Switch element is included in Channel Switch Announcement frames, as described in 8.5.2.6 (Channel Switch Announcement frame format), Extended Channel Switch Announcement frames, as described in 8.5.8.7 (Extended Channel Switch Announcement frame format), and TDLS Channel Switch Request frames, as described in 8.5.13.7 (TDLS Channel Switch Request frame format).” CID Commenter Clause Number Page Comment Proposed Change Resolution 6261 Brian Hart 8.4.2.164 85 conveys the max conveys the max Revised. Discussion: Commenter is correct. Local maximum transmit power is included in VHT Transmit Power Envelope element. Proposed Resolution:
Revised. In P85 L4, replace “the maximum” with “the local maximum”. From “The VHT Transmit Power Envelope element conveys the maximum transmit power for various transmission bandwidths.” To “The VHT Transmit Power Envelope element conveys the local maximum transmit power for various transmission bandwidths.” CID Commenter Clause Number Page Comment Proposed Change Resolution 6543 Sigurd Schelstraete 8.4.2.164 85 Description of elements typically include value of the Length field. That appears to be missing here. Add: "The Length of the element is variable, as the number of Local Maximum Transmit Power fields can be between 1 and 4." Revised. Discussion: The length of VHT Transmit Power Envelope element is variable. Proposed Resolution: Revised. Add the following sentence in P85 L21. "The Length of the element is variable, as the number of Local Maximum Transmit Power for X MHz fields can be between 1 and 4." CID Commenter Clause Number Page Comment Proposed Change Resolution 6006 Kazuyuki Sakoda 8.4.2.165 86 Channel Switch Wrapper can be used by mesh STAs as well. Replace "The New Country subelement is present when an AP performs" with "The New Country subelement is present when an AP or a mesh STA performs" Revised Discussion: Comment is correct. The channel switch wrapper can be used in BSS, IBSS and MBSS. Proposed resolution: Accepted. But, it was already approvied in CID6007. No change is needed.
text that expresses these are optional fields. Discussion: Zero or One subelement has the same meaning with an optional subelement. Proposed resolution: Accepted. Delete “Zere or one” and “zere or more” from Figure 8-401cb. Add “Optional” at each field of Figure 8-401cb as the following. “New Country Subelement (Optional)” “Wide Bandwidth Channel Switch subelement (Optional)” “New VHT Transmit Power Envelope subelement (Optional)” CID Commenter Clause Number Page Comment Proposed Change Resolution 6545 Sigurd Schelstraete 8.4.2.166 87 Element ID and Length description missing Add: "The Element ID is set in accordance with Table 8-54. The Length field is set to 2." Accepted Discussion: The comment is correct. Element ID and Length field description should be described. Proposed resolution: Accepted. Add the following in P87 L32. "The Element ID field is set in accordance with Table 8-54. The Length is set to 2." CID Commenter Clause Number Page Comment Proposed Change Resolution 6546 Sigurd Schelstraete 8.4.2.168 88 Element ID and Length field description missing Add: "The Element ID field is set in accordance with Table 8-54. The Length field is set to 1." Accepted Discussion: The comment is correct. Element ID and Length field description should be described.
Discussion: In the Number of Channels field, the channels belong to the channel set defined in Annex E. For avoiding a mis-interpretation of the subband triplet field, it is useful to add the following note. “NOTE- Channels defined in Annex E are considered as the valid channels of the Number of Channels field.” Proposed Resolution: Revised. Add the following note at P71 L7. “NOTE- Channels defined in Annex E are considered as the valid channels of the Number of Channels field.” CID Commenter Clause Number Page Comment Proposed Change Resolution 6172 Youhan Kim 8.4.2.10 70.59 For 80, 160, 80+80 MHz operating classes, Annex E does not have 'Channel Set' defined (which is where the channel number is coming from I presume). Rather, Annex E uses center frequency index. But Country element is still refering to the First Channel 'Number'. Thus, we need to clarify that for 80, 160, 80+80 MHz, this refers to the center frequency index. Clarify that the channel number refers to the center frequency index in case of 80, 160 and 80+80 MHz operating classes. Rejected Discussion: For 80MHz, 160MHz and 80+80MHz operating classes, Annex E defines only the center frequency index for each channel. If the subband triplets are used for 80MHz, 160MHz and 80+80MHz operating classes, it is needed to clarify the meaning of the channel number in the subband triplets. However, for 80MHz, 160MHz and 80+80MHz operating classes, the VHT transmit power element is used for TPC instead of subband triplets. Please see P74 L36-L41 (IEEE 802.11ac Draft 3.1) Because the subband triplets are not used for 80MHz, 160MHz and 80+80MHz operating classes, it is not necessary to clarify it. Proposed Resolution: Rejected. - Because the subband triplets are not used for 160MHz and 80+80MHz operating classes, it is not necessary to clarify it. CID Commenter Clause Number Page Comment Proposed Change Resolution
Discussion: VHT TXOP PS bit field has two different interpretations depending on the type of the transmitter. The encoding of VHT TXOP PS bit should be different for AP and STA. But, it is not necessary to include the referene to frames. Proposed Resolution: Accepted. No change is needed. Because it was already reflected in IEEE 802.11ac 3.1 CID Commenter Clause Number Page Comment Proposed Change Resolution 6252 Hart 8.4.2.160.2 79.17 We have a of VHT/MU/HT/SU/SU-only BFer/BFee definitions, but all too often we don't use them, creatig potential ambiguity when 11ac is inserted into 802.11. Replace BFer by SU BFer (=SU or MU BFer)/VHT BFer as appropriate, here and elsewhere in the that BFer appears in unmodified form. Ditto BFee => VHT BFee/SU BFee Revise Discussion: It is not esay to select the correct terminology for beamformer and beamformee. Because a bunch of VHT/MU/HT/SU/SU-only BFer/BFee are defined. For making a consistency, it is encouraged to submit comments throughout all draft. And, those comments are totally editorial. Proposed Resolution: Rejected. CID Commenter Clause Number Page Comment Proposed Change Resolution 6255 Hart 8.4.2.160.3 81.29 Rounding should be defined in clause 8, not elsewhere Moving any rounding language to clause 8. Ditto for P81L43 Rejected Discussion: Commenter confused the clause number of the comment. The corresponding sentence is written in clause 8. Proposed Resolution: Rejected.