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Re: [STDS-802-11-TGBN] DSO PDT and CR doc 11-25/1164

Hi Yuxin and Jubin,

There will be non-DSO UHR STAs, e.g. STAs with BW equal to AP's BW or STAs with smaller BW but don't support DSO, that can be scheduled with DSO STAs as mentioned in my last email. So it's not only between DSO STAs. Issue is not DSO ICF; the ICF is non-HT DUP. The concept of allowing pre-UHR PPDU to be used in DSO TXOP was discussed in the past; based on the collective feedback from most of the members that was not the preference as this feature is for UHR and using pre-UHR PPDU for UHR STAs downgrades their performance. 

Thanks,
Morteza

On Mon, Jul 28, 2025 at 10:06 AM 陈俊斌 <00003c9288e54ba2-dmarc-request@xxxxxxxxxxxxxxxxx> wrote:

Hi Morteza,

 

Echo with Yuxin, I think the DSO ICF should be transmitted in a pre-UHR PPDU, thus the pre-UHR STAs can be scheduled in the primary subband while the DSO STAs can be scheduled in the DSO subband in the same time.

It is not efficient to make the a TXOP to be DSO dedicated.

 

Best Regards

 

Junbin Chen

----------------

 

 

From: yuxin.lu <eeluyx@xxxxxxxxx>
Date: Monday, July 28, 2025 at 09:40
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx <STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx>
Subject: Re: [STDS-802-11-TGBN] DSO PDT and CR doc 11-25/1164

Hi Morteza,

 

Thanks for explaining. However, I'm not sure if the DSO ICF has to be carried in a UHR PPDU? I was not able to find the supporting words. 

If carried in a pre-UHR PPDU, the pre-UHR STAs can decode and be scheduled conventionally. In case there are only few DSO STAs in a BSS, it would be a waste to dedicate a DSO TXOP. Please clarify. Thanks

 

On Sat, 26 Jul 2025 at 21:10, Morteza Mehrnoush <morteza.80211@xxxxxxxxx> wrote:

Hi Yuxin,

 

Pre-UHR STAs can’t be scheduled with the DSO STAs because pre-UHR STAs can’t receive UHR PPDU. But non-DSO UHR STAs can be scheduled with the DSO STAs.

Per-UHR STAs can still be scheduled on the non DSO TXOPs.

 

Thanks,

Morteza

 

On Fri, Jul 25, 2025 at 5:48 PM yuxin.lu <eeluyx@xxxxxxxxx> wrote:

Hi Morteza,

 

I see the following statement. Does it mean pre-UHR STAs are excluded from the current schedule? I expect that they can be scheduled within their corresponding operating bw by the AP together with the DSO STAs via the DSO ICF. Could you clarify? Thanks 

" The DSO ICF-ICR exchange and the PPDUs following it, shall only be transmitted between UHR STAs"

 

On Fri, 25 Jul 2025 at 17:11, Morteza Mehrnoush <morteza.80211@xxxxxxxxx> wrote:

Hi Mark,

 

Thanks for the comments. Attached please find the response. 

R1 is uploaded on the server based on the comments.

 

 

Thanks,

Morteza

 

 

On Fri, Jul 25, 2025 at 10:30 AM Mark Rison <m.rison@xxxxxxxxxxx> wrote:

I attach some comments.

 

Thanks,

 

Mark

 

--

Mark RISON, Standards Architect, WLAN   English/Esperanto/Français

Samsung Cambridge Solution Centre       Tel: +44 1223  434600

1 Cambridge Square, Cambridge CB4 0AE   Fax: +44 1223  434601

ROYAUME UNI                             WWW: http://www.samsung.com/uk

 

From: Morteza Mehrnoush <morteza.80211@xxxxxxxxx>
Sent: Thursday, 24 July 2025 14:04
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBN] DSO PDT and CR doc 11-25/1164

 

Hi all,

 

Please review the PDT/CR doc for DSO and let me know if you have any comments.

 

Thanks,

Morteza

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Best Regards,

Yuxin

 


 

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Best Regards,

Yuxin

 

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