Hi Xiaogang,
Please see my comments in-line.
Best regards,
tomo
From: Xiaogang Chen <xiaogang.g.chen@xxxxxxxxx>
Sent: Thursday, May 18, 2023 3:13 AM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] CID on sounding with EMLSR, minimum RU allocation
Hi all,
r3 was uploaded based on the discussions this morning. Sounding related changes are pasted below. Feel free to comment. Thanks.
Proposed changes:
11be editor please add the following paragraph in P.L. 618.43 (35.7.3 Rules for EHT sounding protocol sequences).
A beamformer shall address
a
beamformee that is affiliated with a non-AP MLD
operating
in EMLSR
or EMLMR
mode only
in the first BFRP
Trigger
frame
of a
sounding
sequence.
In addition, modify the paragraph below in P.L. 618.36
An EHT beamformer that initiates an EHT TB sounding sequence shall transmit an EHT NDP Announcement frame with two or more STA Info fields and the
RA field set to the broadcast address. The EHT NDP Announcement frame shall be followed after a SIFS by an EHT sounding NDP, which shall be followed after a SIFS by a BFRP Trigger frame.
If more than one BFRP Trigger frames are present in a sounding sequence, the EHT TB PPDU that contains the EHT Compressed Beamforming/CQI
frame(s) shall be followed, after a SIFS, by another BFRP Tigger frame until the last EHT Compressed Beamforming/CQI frame in a sounding sequence is transmitted.
Each EHT beamformee that is addressed by a BFRP Trigger frame shall respond after a SIFS with an EHT TB PPDU containing one or more EHT Compressed Beamforming/CQI
frames.
[ta] Referring to 10.23.2.6, where it says
The TXOP holder may exceed the TXOP limit only if it does not transmit more than one Data or Management frame in the TXOP, only if it does not transmit a DL-MU-MIMO
PPDU in the TXOP, and only for the follow-ing situations:
—Retransmission of an MPDU, not in an A-MPDU consisting of more than one MPDU
—...
—Transmission of one of the following sequences, provided that the sequence fits within the TXOP limit and it is only the response and the immediately preceding
SIFS that causes the TXOP limit to be exceeded:
•An
HE NDP Announcement frame and HE sounding NDP
•An
HE NDP Announcement frame and HE sounding NDP and BFRP Trigger frame
•A BFRP Trigger frame
•An NDP Announcement frame and EHT sounding NDP
•An NDP Announcement frame and EHT sounding NDP and BFRP Trigger frame ,
can't we rephrase the above red part like “If
more than one BFRP Trigger frames are present in a sounding sequence, the EHT TB PPDU that contains the EHT Compressed Beamforming/CQI frame(s) shall be followed, after a SIFS, by another BFRP Tigger frame
within the TXOP.”, or “If
more than one BFRP Trigger frames are present in a sounding sequence, the EHT TB PPDU that contains the EHT Compressed Beamforming/CQI frame(s) shall be followed, after a SIFS, by another BFRP Tigger frame
following the rule specified in 10.23.2.6 (TXOP limit).”?
Hi Alfred,
Can you help to add the following contribution in the queue of the joint session? Thanks.
Please feel free to review the sounding related CIDs on page 4,5 if interested.
To unsubscribe from the STDS-802-11-TGBE list, click the following link:
https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGBE&A=1
To unsubscribe from the STDS-802-11-TGBE list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-11-TGBE&A=1