Hello,
CID 6431 says that:
"A QoS STA shall use the EDCA Parameter Set Update Count subfield(11ax) in the QoS Capability element of Beacon frames, when present, to determine whether the STA is using the
current EDCA parameters. If the EDCA Parameter Set Update Count subfield in the QoS Capability element is different from the value that has been stored, the QoS STA shall query the updated EDCA parameters by sending a Probe Request frame to the AP." -- what
about DMG STAs? Note no QoS Cap in Announce frames so not clear how a DMG STA finds out
and suggests:
Change to "A QoS STA shall use the EDCA Parameter Set Update Count subfield(11ax) in the QoS Capability element of Beacon and DMG Beacon frames, when present, to determine
whether the STA is using the current EDCA parameters. If the EDCA Parameter Set Update Count subfield in the QoS Capability element is different from the value that has been stored, the QoS STA shall query the updated EDCA parameters by sending a Probe Request
frame to the AP." and add the QoS Capability field to Announce frames
However, this means adding a field to an existing frame, so doesn't
help with existing implementations.
Maybe DMG APs should be required to send DMG Beacon frames (rather than
Announce frames) for enough time (how much would that be?) for all STAs
to see at least one of them, whenever the EDCA parameters change?
An alternative would be to say that EDCA parameters can't be changed
in a DMG BSS. Is this preferable?
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
To unsubscribe from the STDS-802-11-TGM list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGM&A=1