Proposed changes:
Alternative 1:
Below Table 9-272 add:
In the context of Table 9-272 (Setting of the Supported Channel Width Set subfield and Extended NSS BW Support subfield at a STA transmitting
the VHT Capabilities Information field):
·
1/2× or 3/4× Max VHT NSS support can be less than 1, indicating no support.
·
A supported multiple of Max VHT NSS applies to both transmit and receive.
·
2× Max VHT NSS support can be used for 20 MHz or 40 MHz HT PPDUs(#360).
·
Any other combination than the ones listed in this table is reserved.
Change the NOTEs in Table 9-272 to be:
NOTE 1—Max VHT NSS is defined per MCS in 9.4.2.157.3 (Supported VHT-MCS and NSS Set field).
NOTE 2—(MDR2)CCFS1 refers to the Channel
Center Frequency Segment 1 field of the most recently transmitted VHT Operation element. (MDR2)CCFS2 refers to the Channel
Center Frequency Segment 2 field of the most recently transmitted HT Operation element. CCFS1 is nonzero when the current BSS bandwidth is 160 MHz or 80+80 MHz and the NSS support is at least Max VHT NSS. CCFS2 is zero in this case.
CCFS2 is nonzero when the current BSS bandwidth is 160 MHz or 80+80 MHz and the NSS support is less than Max VHT NSS. CCFS1 is zero in this case. At most one of CCFS1 and CCFS2 is nonzero when the current BSS bandwidth is 160 MHz or 80+80
MHz. See Table 11-24 (Setting of Channel
Center Frequency Segment 0, Channel Center Frequency Segment 1, and Channel
Center Frequency Segment 2 subfields).
NOTE 3—A receiving STA in which dot11VHTExtendedNSSBWCapable(#89) is false will ignore the Extended NSS BW Support subfield and effectively evaluate
this table only at the entries where Extended NSS BW Support is 0.
NOTE 4—See also 11.38 (VHT BSS operation).(#4762)
Alternative 2:
Below Table 9-272 add:
In the context of Table 9-272 (Setting of the Supported Channel Width Set subfield and Extended NSS BW Support subfield at a STA transmitting
the VHT Capabilities Information field):
·
1/2× or 3/4× Max VHT NSS support can be less than 1, indicating no support.
·
A supported multiple of Max VHT NSS applies to both transmit and receive.
·
2× Max VHT NSS support can be used for 20 MHz or 40 MHz HT PPDUs(#360).
·
Any other combination than the ones listed in this table is reserved.
Change the NOTEs in Table 9-272 to be:
NOTE 1—Max VHT NSS is defined per MCS in 9.4.2.157.3 (Supported VHT-MCS and NSS Set field).
NOTE 2—(MDR2)CCFS1 refers to the Channel
Center Frequency Segment 1 field of the most recently transmitted VHT Operation element.
NOTE 3—(MDR2)CCFS2 refers to the Channel
Center Frequency Segment 2 field of the most recently transmitted HT Operation element.
NOTE 4—CCFS1 is nonzero when the current BSS bandwidth is 160 MHz or 80+80 MHz and the NSS support is at least Max VHT NSS. CCFS2 is zero in
this case. See Table 11-24 (Setting of Channel Center Frequency Segment 0, Channel
Center Frequency Segment 1, and Channel
Center Frequency Segment 2 subfields).
NOTE 5—CCFS2 is nonzero when the current BSS bandwidth is 160 MHz or 80+80 MHz and the NSS support is less than Max VHT NSS. CCFS1 is zero in
this case. See Table 11-24 (Setting of Channel Center Frequency Segment 0, Channel
Center Frequency Segment 1, and Channel
Center Frequency Segment 2 subfields).
NOTE 6—At most one of CCFS1 and CCFS2 is nonzero when the current BSS bandwidth is 160 MHz or 80+80
MHz. See Table 11-24 (Setting of Channel
Center Frequency Segment 0, Channel Center Frequency Segment 1, and Channel
Center Frequency Segment 2 subfields).
NOTE 7—A receiving STA in which dot11VHTExtendedNSSBWCapable(#89) is false will ignore the Extended NSS BW Support subfield and effectively evaluate
this table only at the entries where Extended NSS BW Support is 0.
NOTE 8—See also 11.38 (VHT BSS operation).(#4762)
Alternative 3:
Below Table 9-272 add:
In the context of Table 9-272 (Setting of the Supported Channel Width Set subfield and Extended NSS BW Support subfield at a STA transmitting
the VHT Capabilities Information field):
·
1/2× or 3/4× Max VHT NSS support can be less than 1, indicating no support.
·
A supported multiple of Max VHT NSS applies to both transmit and receive.
·
2× Max VHT NSS support can be used for 20 MHz or 40 MHz HT PPDUs(#360).
·
Any other combination than the ones listed in this table is reserved.
Change the NOTEs in Table 9-272 to be:
NOTE 1—Max VHT NSS is defined per MCS in 9.4.2.157.3 (Supported VHT-MCS and NSS Set field).
NOTE 2—(MDR2)CCFS1 refers to the Channel
Center Frequency Segment 1 field of the most recently transmitted VHT Operation element.
NOTE 3—(MDR2)CCFS2 refers to the Channel
Center Frequency Segment 2 field of the most recently transmitted HT Operation element.
NOTE 4—CCFS1 is nonzero when the current BSS bandwidth is 160 MHz or 80+80 MHz and the NSS support is at least Max VHT NSS. CCFS2 is zero in
this case. See NOTE 7.
NOTE 5—CCFS2 is nonzero when the current BSS bandwidth is 160 MHz or 80+80 MHz and the NSS support is less than Max VHT NSS. CCFS1 is zero in
this case. See NOTE 7.
NOTE 6—At most one of CCFS1 and CCFS2 is nonzero when the current BSS bandwidth is 160 MHz or 80+80
MHz. See NOTE 7.
NOTE 7—See Table 11-24 (Setting of Channel
Center Frequency Segment 0, Channel
Center Frequency Segment 1, and Channel Center Frequency Segment 2 subfields).
NOTE 8—A receiving STA in which dot11VHTExtendedNSSBWCapable(#89) is false will ignore the Extended NSS BW Support subfield and effectively evaluate
this table only at the entries where Extended NSS BW Support is 0.
NOTE 9—See also 11.38 (VHT BSS operation).(#4762)
Thanks,
Mark
--
Mark RISON, Standards Architect, WLAN English/Esperanto/Français
Samsung Cambridge Solution Centre Tel: +44 1223 434600
Innovation Park, Cambridge CB4 0DS Fax: +44 1223 434601
ROYAUME UNI WWW:
http://www.samsung.com/uk
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