Re: [STDS-802-11-TGM] Delta SNR and PHY related comments

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Well, to me it's fairly obvious, since in a 4-bit 2's complement integer

field you can only hold an integer from -8 to 7. However, if it's not

obvious then the solution is to remove the min, max and Round operators

from Equation (9-2) and then say:

Each Delta SNR subfield is a 2s complement signed integer that contains the ΔSNR_k,i in dB, computed using Equation (9-2), rounded to the nearest integer and constrained to the range –8 to 7 ~~and quantized to 4 bits in the range –8 dB to 7 dB with 1 dB granularity~~. The structure of the MU Exclusive Beamforming Report field is shown in Table 9-78 (MU Exclusive Beamforming Report information).

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

From: Yujian (Ross Yu) <ross.yujian@xxxxxxxxxx>
Sent: Thursday, 13 May 2021 01:35
To: Mark Rison <m.rison@xxxxxxxxxxx>; STDS-802-11-TGM@xxxxxxxxxxxxxxxxx
Subject: 答复: Delta SNR and PHY related comments

Hi Mark and Youhan,

I think the description helps readers better understand the complicated equation.

regards

于健 Ross Jian Yu

Huawei Technologies

发件人: Mark Rison [mailto:m.rison@xxxxxxxxxxx]
发送时间: 2021年5月13日 7:39
收件人: STDS-802-11-TGM@xxxxxxxxxxxxxxxxx
主题: Re: [STDS-802-11-TGM] Delta SNR and PHY related comments

--- This message came from the IEEE 802.11 Task Group M Technical Reflector ---

Thanks. I don't understand why you're proposing to add "(in the range of –8 to 7 dB)", since this is already covered by Equation (9-2):

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

From: Youhan Kim <youhank@xxxxxxxxxxxxxxxx>
Sent: Thursday, 13 May 2021 00:32
To: Mark Rison <m.rison@xxxxxxxxxxx>; STDS-802-11-TGM@xxxxxxxxxxxxxxxxx
Subject: RE: Delta SNR and PHY related comments

Thank you for the clarification, Mark.

I have updated the resolution in 11-21/822r1.

Regards,

Youhan

From: Mark Rison <m.rison@xxxxxxxxxxx>
Sent: Wednesday, May 12, 2021 4:15 PM
To: STDS-802-11-TGM@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGM] Delta SNR and PHY related comments

--- This message came from the IEEE 802.11 Task Group M Technical Reflector ---

CAUTION: This email originated from outside of the organization.

Thanks for this, Youhan. Re CID 176 in 21/0822, please note that the comment is suggesting the following change:

Each Delta SNR subfield is a 2s complement signed integer that contains the ΔSNR_k,i in dB, computed using Equation (9-2) ~~and quantized to 4 bits in the range –8 dB to 7 dB with 1 dB granularity~~. The structure of the MU Exclusive Beamforming Report field is shown in Table 9-78 (MU Exclusive Beamforming Report information).

i.e. also deletes "and quantized to 4 bits in the range –8 dB to 7 dB with 1 dB granularity" (since this is duplication of the equation).

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

From: Youhan Kim <youhank@xxxxxxxxxxxxxxxx>
Sent: Wednesday, 12 May 2021 23:58
To: STDS-802-11-TGM@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGM] Delta SNR and PHY related comments

--- This message came from the IEEE 802.11 Task Group M Technical Reflector ---

Hi, Mike

I have uploaded the following documents resolving comments related to Delta SNR and PHY. Please add them to the queue (fine with future teleconferences if there is no time this week).

11-21/822 – CC35 Delta SNR Comments

11-21/823 – CC35 PHY Comments

Thanks.

Youhan

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