[STDS-802-11-TGBN] Request to present LLI PDT

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On Mar 12, 2025, at 9:10 AM, Shengquan Hu <000036fc915e2c29-dmarc-request@xxxxxxxxxxxxxxxxx> wrote:

Hi Alfred,

Could you please add the following four motions to the PHY motion list?

Move to add the following to the 11bn SFD
The occupied STFs tones of UHR-STF for DRU on DBW60 are the same as that of the largest MRU (i.e. 484+242) corresponding to the distribution BW 60MHz within the PPDU BW
Supporting Doc: [25/0358r0]
SP Result: no objection

Move to add the following to the 11bn SFD
DRU CSD start index assignment for DBW60 is defined as below

Supporting Doc: [25/0358r0, 25/0359r0]
SP Result: no objection

Move to add the following to the 11bn SFD
LDPC is the only FEC coding scheme for DL/UL MU-MIMO in 11bn
Supporting Doc: [25/0396r1]
SP Result: no objection

Move to add the following to the 11bn SFD
DL/UL MU-MIMO in UHR is optional for 20MHz only STA
Supporting Doc: [25/0396r1]
SP Result: no objection

Thank you,
Shengquan

From: Eunsung Park <esung.park@xxxxxxx>
Sent: Wednesday, March 12, 2025 5:48 AM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBN] 答复: [STDS-802-11-TGBN] 回复: Motion request

External email : Please do not click links or open attachments until you have verified the sender or the content.
Hi Alfred,

Could you please add the following two motions to the motion list?

Move to add the following to the 11bn SFD
Encoding of the PS160 and RU allocation subfields in a UHR variant User Info field for DBW60 is defined as follows
PS160 subfield
B0 of the RU Allocation subfield
B7-B1 of the RU Allocation subfield
Bandwidth (MHz)
DRU Size
DRU index
80MHz frequency subblock index (l)
PHY DRU index
0-3:
80 MHz frequency subblock where the DRU is located
0-36
Reserved
Reserved
Reserved
Reserved
Reserved
37-48
80, 160, or 320
52
DRU1 to DRU12
N
16xN + DRU index
49-52
Reserved
Reserved
Reserved
Reserved
Reserved
53-58
80, 160, or 320
106
DRU1 to DRU6
N
8xN + DRU index
59-60
Reserved
Reserved
Reserved
Reserved
Reserved
61-63
80, 160, or 320
242
DRU1 to DRU3
N
4xN + DRU index
64-127
Reserved
Reserved
Reserved
Reserved
Reserved
Supporting List: [25/0359r0, 25/0358r0]
SP results: no objection

Move to add the following to the 11bn SFD
The constant shift value defined in the 80 MHz frequency subblock is used for DBW60
Supporting List: [25/0359r0, 25/0358r0]
SP results: no objection

Best regards,
Eunsung

From: Yujian (Ross Yu) [mailto:00001792b51ef4ea-dmarc-request@xxxxxxxxxxxxxxxxx]
Sent: Wednesday, March 12, 2025 9:27 PM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBN] 答复: [STDS-802-11-TGBN] 回复: Motion request

Hi Alfred,

Please add the following motion into the motion list:
•Move to make the following changes to the 802.11bn SFD:
–Mandatory support MCSs of QPSK with code rate 2/3; 16QAM with code rate 2/3; 16QAM with code rate 5/6; 256QAM with code rate 2/3.
•Support for 256QAM with code rate 2/3 for 20MHz only devices is ~~TBD~~ optional.
–[Motion #216, [264] and [274, 275]]

regards
Ross Jian Yu
Huawei

发件人: Liangxiao Xin <xlx20190808@xxxxxxxxx>
发送时间: 2025年3月12日 11:05
收件人: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
主题: Re: [STDS-802-11-TGBN] 回复: Motion request

Hi Alfred,

May I update the motion text as shown below? Compared with the passed SP, we add a third note.
11bn defines a mechanism for non-AP STA to provide the delay report of LL buffered data to its AP.
o   note: this feature is optional.
o   note: the container carrying such information is TBD.
o note: the delay report is the expiration time of the TBD MPDU/MSDU. The _expression_ of the delay report is TBD.
Supporting List: [24/1692, 23/0885r0, 24/264r1, 23/45r1, 24/863r0]

The passed SP is
SP1: Liangxiao Xin – Low Latency
Do you support to include the following in SFD?
·       11bn defines a mechanism for non-AP STA to provide the delay report of LL buffered data to its AP.
o   note: this feature is optional.
o   note: the container carrying such information is TBD.
Supporting List: [24/1692, 23/0885r0, 24/264r1]
Result: 65%Y, 12%N, 23%A (101 votes).

Thank you!

Regards,
Liangxiao

On Sat, Mar 8, 2025 at 9:59 PM Liangxiao Xin <xlx20190808@xxxxxxxxx> wrote:
Hi Alfred,

Could you please add the following motion to the agenda? Thank you!

SP1: Liangxiao Xin – Low Latency
Do you support to include the following in SFD?
·       11bn defines a mechanism for non-AP STA to provide the delay report of LL buffered data to its AP.
o   note: this feature is optional.
o   note: the container carrying such information is TBD.
Supporting List: [24/1692, 23/0885r0, 24/264r1]
Result: 65%Y, 12%N, 23%A (101 votes).

Regards,
Liangxiao

On Tue, Feb 25, 2025 at 11:59 AM liuchenchen <0000185315b29db3-dmarc-request@xxxxxxxxxxxxxxxxx> wrote:
Hi Alfred,

Can you please add the following two motions on DRU for 60MHz DBW to the TGbn agenda for voting?
Do you support that the Data and pilot subcarrier indices for DRUs in an 60 MHz DBW are defined in following table:
Data and pilot subcarrier indices for Distributed-tone RUs (DRU) in a 60 MHz UHR TB PPDU
DRU type
DRU index and subcarrier range
52-tone DRU
i=1:12
DRU1
[-499:14:-23, 5:14:229]
DRU2
[-492:14:-16, 12:14:236]
DRU3
[-496:14:-20, 8:14:232]
DRU4
[-489:14:-13, 15:14:239]
DRU5
[-498:14:-22, 6:14:230]
DRU6
[-491:14:-15, 13:14:237]
DRU7
[-495:14:-19, 9:14:233]
DRU8
[-488:14:-12, 16:14:240]
DRU9
[-497:14:-21, 7:14:231]
DRU10
[-490:14:-14, 14:14:238]
DRU11
[-494:14:-18, 10:14:234]
DRU12
[-487:14:-11, 17:14:241]
106-tone DRU
i=1:6
DRU1
[-499:7:-9, 5:7:243]
DRU2
[-496:7:-6, 8:7:246]
DRU3
[-498:7:-8, 6:7:244]
DRU4
[-495:7:-5, 9:7:247]
DRU5
[-497:7:-7, 7:7:245]
DRU6
[-494:7:-4, 10:7:248]

242-tone DRU
i=1:3
DRU1
[-499:7:-9, 5:7:243, -496:7:-6, 8:7:246, -458:21:-38, 25:21:193]
DRU2
[-498:7:-8, 6:7:244, -495:7:-5, 9:7:247, -451:21:-31, 32:21:200]
DRU3
[-497:7:-7, 7:7:245, -494:7:-4,10:7:248, -444:21:-24, 39:21:207]

Do you support that the Pilot subcarrier indices for DRUs in an 60 MHz DBW are defined in following table?
Pilot indices for DRU transmission over 60MHz DBW
DRU size
Pilot indices
52-tone DRU
i=1:12
{-373 -219 -65 159}, {-450 -296 -142   82}, {-412 -258 -104 120}, {-335 -181 -27 197},
{-386 -232 -78 146}, {-463 -309 -155   69}, {-425 -271 -117 107}, {-348 -194 -40 184},
{-399 -245 -91 133}, {-476 -322 -168   56}, {-438 -284 -130   94}, {-361 -207 -53 171},
106-tone DRU
i=1:6
{-450 -296 -142   82}, {-335 -181 -27 197}, {-463 -309 -155   69}, {-348 -194 -40 184},
{-476 -322 -168   56}, {-361 -207 -53 171},
242-tone DRU
i=1:3
{-450 -335 -296 -181 -142 -27   82 197}, {-463 -348 -309 -194 -155 -40   69 184},
{-476 -361 -322 -207 -168 -53   56 171},

Supporting List: [25/0154r0]

SP result in PHY ad-hoc: unanimous.

Best regards
Chenchen Liu

发件人: Das, Dibakar <dibakar.das@xxxxxxxxx>
发送时间: 2025年2月22日 2:00
收件人: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
主题: Re: [STDS-802-11-TGBN] Motion request

Hi Alfred,

Can you please add the following motion on CTDMA/TXOP sharing to the TGbn agenda for voting?

Do you agree that:
The maximum time allocated by a sharing AP in a TXOP to all shared AP for CTDMA is not larger than the TXOP limit it advertised for the minimum between AC_VI TxOP limit and the TxOP Limit of the AC it obtains the TxOP with to its associated STAs.
If TXOP limit for an AC is 0, there is no CTDMA in a TXOP obtained using that AC.
The sharing AP shall use at least a TBD portion of the obtained TXOP for data communication with its own associated STAs.
Note: similar consideration will apply for TXS mode 2

Supporting List: [24/0093]

SP result in MAC ad-hoc: unanimous.

Regards,
Dibakar

From: Das, Dibakar <dibakar.das@xxxxxxxxx>
Sent: Wednesday, January 15, 2025 9:48 AM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBN] Motion request

Hi Alfred,
Could you please queue the following motion on CTDMA/TXOP sharing to the TGbn agenda for voting?:
Do you agree to define a mechanism as part of the procedure of time sharing during a TXOP (e.g. C-TDMA, TXS, …) to support fairness to neighboring STAs (APs and non-APs)?
Exact mechanism is TBD
Supporting documents: 11-24-93, 11-25-86r0
SP Result: (don’t recall) think it was 144Y/27N
Regards,
Dibakar

From: Akhmetov, Dmitry <Dmitry.Akhmetov@xxxxxxxxx>
Sent: Wednesday, January 15, 2025 12:34 AM
To: STDS-802-11-TGBN@xxxxxxxxxxxxxxxxx
Subject: [STDS-802-11-TGBN] Motion request

Dear Alfred,
Could you please queue the following motion on P EDCA to the TGbn agenda for voting?:
[M1] Do you agree to define HIP EDCA in UHR where a STA with Low Latency traffic may be allowed, based on TBD conditions, to send a Defer Signal (it is TBD whether CTS or RTS is used) to start a protected short contention for pending LL data
Conditions to be allowed to send a Defer Signal is TBD
STA in HiP EDCA always use RTS/CTS as initial frame exchange and retry.
Duration of protected short contention is TBD.
Access parameters (AIFSN, CW and the expansion rules) used to transmit the Defer Signal are TBD. The retry count where the Defer Signal is allowed to be sent is TBD
Contention parameters for the protected short contention are TBD. The STAs that transmitted a Defer Signal but did not win the protected short contention will initiate a new retry.
Low Latency traffic is treated as AC_VO traffic. Other cases are TBD.
The solution would provide control on the degree of collisions that may occur while using it and, allows for autonomous randomness or/and controlled by the AP
No new mandatory synchronization requirement on STA side
HIP EDCA is used by the STAs in a BSS only when this feature is enabled by the AP
Supporting doc: 24/1144r1
SP Result: 150Y, 14N, 70A

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--
Liangxiao Xin
OPPO

--
Liangxiao Xin
OPPO

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