Re: [STDS-802-11-TGBE] CR for 36.3.22 and Annex E uploaded

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Hi, Youhan

Thank you for the comment. I feel that this depends on the definition of operating class, and where it is used. To me, I think 320-1 and 320-2 is only difference in location/center frequency, and hence, giving them different operating class seems not necessary. In the scenario where operating class will be used, channel numbering will also be provided, I believe that there is no ambiguity if we put 320-1 and 320-2 in a same class.

To my understanding, the purpose of mentioning 320-1 and 320-2 is to remove ambiguity in BW location for a PPDU, and this differentiation is needed only in PHY preamble. So may be your CR for 3175 could be

Set to 4 for 320 MHz EHT PPDU occupying one of the channels defined in the Operating class 137 with center frequency 31, 95, 159.
Set to 5 for 320 MHz EHT PPDU occupying one of the channels defined in the Operating class 137 with center frequency 63, 127, 191

Sorry for the confusion from my current CR. If you agree, I will update the CR for 1956 from accept to be reject.

Thank you and best,

Ruchen

From: Youhan Kim [mailto:youhank@xxxxxxxxxxxxxxxx]
Sent: Wednesday, March 10, 2021 6:28 AM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBE] CR for 36.3.22 and Annex E uploaded

Thanks, Ruchen and Ross.

320-1 and 320-2 are distinguished by their center frequency. And Table E-4 is where we define channels, including their center frequency. Hence, I think Table E-4 is the appropriate place to distinguish 320-1 and 320-2. Please see CID 3175.

3175

230.20

36.3.11.7.2

The 320 MHz Operating class need to be separated to two - one for 320-1 and another for 320-2.

At P230L20, P236L24, P239L22, change "Set to 4 for 320 MHz-1. Set to 5 for 320 MHz-2" to

"Set to 4 for 320 MHz EHT PPDU occupying one of the channels defined in the Operating class 137 in Table E-4.
Set to 5 for 320 MHz EHT PPDU occupying one of the channels defined in the Operating class 138 in Table E-4."

In Table E-4 (P385L25), in the row of the Operating Class 137, under the column of "Channel center frequency index", change
"31, 63, 95, 127, 159, 191"
to
"31, 95, 159"

Add a new Operating class to Table E-4:
Operating class = 138
Channel starting frequency = 5.950
Channel spacing = 320
Channel center frequency index = 63, 127, 191

And update the Operating class numbers for the Reserved row appropriately.

Thanks.

Youhan

From: Yujian (Ross Yu) <ross.yujian@xxxxxxxxxx>
Sent: Tuesday, March 9, 2021 11:40 PM
To: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBE] 答复: CR for 36.3.22 and Annex E uploaded

CAUTION: This email originated from outside of the organization.

Hi Ruchen,

Thanks for the response. We can discuss during your presentation. If needed, we can describe it in the first place where it shows up, e.g., U-SIG subclause.

regards

于健 Ross Jian Yu

Huawei Technologies

发件人: Ruchen Duan [mailto:r.duan@xxxxxxxxxxx]
发送时间: 2021年3月10日 15:26
收件人: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
主题: Re: [STDS-802-11-TGBE] CR for 36.3.22 and Annex E uploaded

Hi, Ross

Thank you for the comment. I originally have the same thoughts, and that is how I compose Annex E for Draft 0.3. And I realize that the Operating class should not be abused, so yes, it may not be proper to split.

Then I feel that we shall find better place to define 320-1 and 320-2 other than Annex E, because we never define any BW (20/40/80/160 and 80+80) in Annex E. I think we can discuss during the PHY meeting to find a proper location for this definition.

Best,

Ruchen

From: Yujian (Ross Yu) [mailto:ross.yujian@xxxxxxxxxx]
Sent: Tuesday, March 9, 2021 10:46 PM
To: Ruchen Duan <r.duan@xxxxxxxxxxx>; STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
Subject: 答复: CR for 36.3.22 and Annex E uploaded

Hi Ruchen,

Can you clarify why we need two different operating class in Annex E for 320-1 and 320-2?

I think the comment just wants to have some description of what is 320-1 and what is 320-2. You can add some description, which is similar as in SFD.

In addition to four entries for 20/40/80/160MHz, there exists two entries in U-SIG BW field for 320 MHz:

320-1 if PPDU channel center frequency is 31, 95, 159.
320-2 if PPDU channel center frequency is 63, 127, 191.

[Motion 135, #SP237, [48] and [80]]

regards

于健 Ross Jian Yu

Huawei Technologies

发件人: Ruchen Duan [mailto:r.duan@xxxxxxxxxxx]
发送时间: 2021年3月10日 4:15
收件人: STDS-802-11-TGBE@xxxxxxxxxxxxxxxxx
主题: [STDS-802-11-TGBE] CR for 36.3.22 and Annex E uploaded

Hi, Alfred, Sigurd and Tianyu

Please add the following document to the PHY queue.

https://mentor.ieee.org/802.11/dcn/21/11-21-0424-00-00be-cr-for-36-3-22-and-annex-e.doc

Thank you and best,

Ruchen

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