Hi Bo,
Could you please update Alfred's SPs (SP7, SP8, and SP10) as follows? The updates are based on the offline discussions (these are not new SPs, but updated ones). Also, please remove SP9 mentioned in the previous email.
Could you please update Alfred's SPs (SP7, SP8, and SP10) as follows? The updates are based on the offline discussions (these are not new SPs, but updated ones). Also, please remove SP9 mentioned in the previous email.
SP7 (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support that, for Active TX and Backscatter use cases, the length of the Frame Body field (if variable) is indicated in the MAC header of the AMP frame?
-
Specific location, encoding and size is TBD.
-
Note—If the length is indicated in the PHY header, there is no need for length indication in the MAC header.
-
Note—For AMP-enabled use case, the length is already signaled in the Frame Control field.
[Reference contribution: 11-25/776r2]
SP8 (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support that, for unprotected Active TX and backscatter use cases, when the FCS field is carrying the CRC, the length of the FCS field is 16 bits?
-
It is TBD if the CRC is 8-bit long under certain conditions.
-
Note: for AMP-enabled use case, we continue to use baseline 16 bits CRCs/MICs.
-
Note—If the FCS field carries the MIC, the length of the FCS field is 16 bits (already in SFD).
[Reference contribution: 11-25/776r2]
-
Do you support that the FCS field of all AMP frames has the same size? -
This SP can be omitted if O3 of SP7 has more support.
SP10 (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support that the CRC of AMP frames shall use the 16-bit CRC engine from IEEE 802.11ba?
-
If the group decides to carry 8-bit long CRC in certain AMP frames, it is TBD how to obtain the 8-bit CRC from the 16-bit CRC engine output.
Thanks,
Sanket Kalamkar
From: Sanket Kalamkar <sankal@xxxxxxxxxxxxxxxx>
Sent: Monday, August 25, 2025 10:22 PM
To: STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx <STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx>; sun.bo1@xxxxxxxxxxxxxxxx <sun.bo1@xxxxxxxxxxxxxxxx>
Subject: Re: [STDS-802-11-TGBP] reminder of SPs in coming TGbp TC on Aug 26
Sent: Monday, August 25, 2025 10:22 PM
To: STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx <STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx>; sun.bo1@xxxxxxxxxxxxxxxx <sun.bo1@xxxxxxxxxxxxxxxx>
Subject: Re: [STDS-802-11-TGBP] reminder of SPs in coming TGbp TC on Aug 26
Hi Bo,
Can you please update Alfred's SPs as follows? These are not new SPs, but updated SPs as per offline discussions. The
highlighted one is to be deferred.
SP1 (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support that the AMP frame consists of the following basic components:
-
A MAC header
-
A variable-length frame body, which if present, contains information specific to the frame type
-
An FCS, which contains either a TBD-bit CRC or a 16-bit MIC
-
Whether FCS is always present or not for backscatter PPDUs is TBD
-
Note: With the length of the AMP frame being expressed in octets
|
MAC Header
|
Frame Body
|
FCS
|
[Reference contribution: 11-25/776r2]
SP1a (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support to have an indication within an AMP PPDU to differentiate between
-
AMP frames for monostatic and bistatic backscatter use cases
-
Referring to these as backscatter AMP frames.
-
AMP frames for AMP-enabled STA and Active TX UL use cases
-
Referring to these as non-backscatter AMP frames.
-
The indication is TBD.
[Reference contribution: 11-25/776r2]
SP2 (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support that the MAC Header of the AMP frame comprises Frame Control, ID, and Type Dependent Control fields?
- Frame Control contains a Type field that indicates the type of AMP frame, and other fields that are TBD.
- ID contains an identifier for the AMP frame
- Whether the ID field is always present or not is TBD
- Type Dependent Control contains control information that depends on the type of AMP frame
- Whether Type Dependent Control field is always present or not is TBD
-
Whether there are other fields in the MAC header is TBD
[Reference contribution: 11-25/776r2]
SP2a (Defer): Do you agree to add the following text into the 11bp SFD?
-
Do you support that the MAC Header of the non-backscatter AMP frames comprises Frame Control, ID, and Type Dependent Control fields
- Frame Control contains a Type field that indicates the type of AMP frame, and other fields that are TBD.
- Values 0 to 4 of the Type field identify baseline WUR frame types
- One value of the Type is assigned to AMP Trigger frame (e.g., value 5 of Type)
- Another value of the Type is assigned to AMP Ack frame and AMP Data frame (e.g., value 6 of Type)
- TBD if same or different values
- Note: AMP Wake Up frame is expected to use the same format and Type value as WUR Wake-Up frame
- ID contains an identifier for the AMP frame
- Whether the ID field is always present or not for the new types is TBD
- Type Dependent Control contains control information that depends on the type of AMP frame
- Whether Type Dependent Control field is always present or not for the new types is TBD
|
|
Frame Control
|
ID
|
Type Dependent
Control
|
|
Bits
|
8
|
12
|
12
|
[Reference contribution: 11-25/776r2]
SP2b (for SFD) Do you agree to add the following text into the 11bp SFD?
-
Do you support that the MAC Header of the backscatter AMP frame comprises Frame Control, ID, and Type Dependent Control fields
- Frame Control contains a Type field that indicates the type of backscatter AMP frame, and other fields that are TBD.
- ID contains an identifier for the backscatter AMP frame
- Whether the ID field is always present or not is TBD, and has a length of 16 bits
- Type Dependent Control contains control information that depends on the type of AMP frame
-
Whether Type Dependent Control field is always present or not for the backscatter AMP frame is TBD
|
|
Frame Control
|
ID
|
Type Dependent
Control
|
|
Bits
|
8
|
[Reference contribution: 11-25/776r2]
SP3 (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support that the Frame Control field of the AMP frame is 8 bits?
-
Type field uses 3-4 bits of the Frame Control
-
Whether the Type field is the first field of the Frame Control field is TBD
[Reference contribution: 11-25/776r2]
SP4 (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support that the length of the ID field is based on the frame type/use case:
-
12 bits for AMP enabled non-AP STAs,
-
Either 12 or 16 bits for active TX non-AP AMP STAs,
-
16 bits for backscatter non-AP AMP STAs
[Reference contribution: 11-25/776r2]
SP5 (for SFD): Do you agree to add the following text into the 11bp SFD?
-
Do you support that the Type Dependent Control field is
-
12 bits for AMP enabled non-AP STAs
-
If present, either 8, 12, or 16 bits for active TX non-AP AMP STAs
-
If present, TBD (multiple of 8 bits) bits for backscatter non-AP AMP STAs
[Reference contribution: 11-25/776r2]
SP6 (for information purpose):
-
Which option do you support for the maximum length of the Frame Body field:
-
16 octets (obtained from WUR) for non-backscatter use cases.
-
Option 1: 64 octets (account for max RFID) for backscatter use cases
-
Citing from external sources: While the EPC length can range from 64 bits to 496 bits, the most common sizes are 96 bits and 128 bits. For some EPC types, 96 bits is the only available option
-
Option 2: 128 octets (account for max sizes for read and write) for backscatter use cases
-
Option 3: 256 octets for backscatter use cases
[Reference contribution: 11-25/776r2]
SP7 (for information purpose):
-
Do you support that the length of the Frame Body field is indicated in the MAC header of the backscatter AMP frame
-
Specific location, encoding and size is TBD.
For discussion purposes only:
Option 1: if max length is less than or equal to 64 then carry the length in the Frame Control (5 bits with 2 octet resolution)
Option 2: if max length is either 128 or 256 then carry the length in the TD Control field
Above options depend on outcome of SP6.
[Reference contribution: 11-25/776r2]
SP8 (for information purpose):
-
Which option do you support for the FCS length field for backscatter use cases:
-
Option 1: 8 bits
-
Option 2: 16 bits
-
Option 3: FCS length depends on AMP frame length
-
Threshold that is to be used for switching from one CRC length to another is TBD
-
Note: for non-backscatter use cases, we can use baseline 16 bits CRCs/MICs.
[Reference contribution: 11-25/776r2]
SP9 (for information purpose):
-
Do you support that the FCS field of all AMP frames has the same size?
-
This SP can be omitted if O3 of SP7 has more support.
[Reference contribution: 11-25/776r2]
SP10 (for information purpose): Do you support that the CRC of AMP frames shall use the TBD-bit CRC engine from IEEE 802.11?
[Reference contribution: 11-25/776r2]
Best,
Sanket
Sanket
From: sun.bo1@xxxxxxxxxxxxxxxx <sun.bo1@xxxxxxxxxxxxxxxx>
Sent: Monday, August 25, 2025 1:40 AM
To: STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx <STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx>
Subject: [STDS-802-11-TGBP] reminder of SPs in coming TGbp TC on Aug 26
Sent: Monday, August 25, 2025 1:40 AM
To: STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx <STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx>
Subject: [STDS-802-11-TGBP] reminder of SPs in coming TGbp TC on Aug 26
WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros.
Hello, all,
This email serves as a reminder of coming TGbp TC on Aug 26, during which we will continue pending SPs listed in 11-25/0990r5.
Each SP Set will have a short slot to recap the background. We will start from the SP11 in SP Set #9 (Rojan). If you have a deferred SP in Jul f2f meeting and want it back to the pending SP list, please re-announce your request to the reflector.
Best Regards,
Bo
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