I check the SFD—although there are motions on a time-slot based mechanism, it is not clear that the clients access the slots in a TDMA fashion.
Sent: Thursday, May 15, 2025 2:28 PM
To: STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBP] [EXT] Re: [STDS-802-11-TGBP] SP request
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Hi Bo,
Please help to queue the below 7 SPs:
SP1: Do you agree to add to 11bp SFD:
§ An AMP AP transmits a variant of the AMP Trigger frame to start a time-slot based random access session for non-AP AMP STAs. The frame carries:
o Session ID: Identifies the random access session
o ECW: Indicates the total number of slots in the random access session
o Other parameters are TBD.
Supporting documents: 25/0817r0, 25/0334r1, 25/0046r0
SP2: Do you agree to add to the 11bp SFD:
q 11bp defines one AMP frame type to carry a UHF command.
§ The AMP frame carries a Frame Type field, a Frame Body field and a CRC field
§ The UHF command is carried in the Frame Body field
§ The UHF commands supported by 11bp is TBD
§ NOTE – The UHF commands are defined by the EPC® Radio-Frequency Identity Generation-2 UHF RFID Standard.
Supporting documents: 25-0818r0, 25/0335r0
SP3: Do you agree to add to the 11bp SFD:
q An AMP AP or a backscatter non-AP AMP STA that supports the logical interface of the UHF RFID Standard shall support the following UHF commands: Read, Write
§ Other UHF commands supported by 11bp is TBD
§ NOTE – The UHF commands are defined by the EPC® Radio-Frequency Identity Generation-2 UHF RFID Standard.
Supporting documents: 25-0818r0, 25/0335r0
SP4: Do you agree to add the following text to TGbp SFD?
§ 802.11bp defines a mechanism to generate a Pairwise Master Key (PMK) and a Pairwise Transient Key (PTK) at an Active Tx non-AP AMP STA to support secure communication, where:
o An AMP AP transmits a first downlink AMP frame containing an ANonce.
o After receiving the first downlink AMP frame from the AMP AP, the non-AP AMP STA generates a PMK, a PMKID and an SNonce.
o The non-AP AMP STA generates a Pairwise Transient Key (PTK) using the ANonce, the SNonce, and the PMK.
o Note - The PMK generation mechanism is TBD.
Supporting documents: 25/819r0, 24/1548r2
SP5: Do you agree to add the following text to TGbp SFD?
§ 802.11bp defines a mechanism to generate a Pairwise Master Key (PMK) and a Pairwise Transient Key (PTK) at an Active Tx non-AP AMP STA to support secure communication, where:
o After generating a PMK and a PTK in response to the first downlink AMP frame carrying an ANonce, the non-AP AMP STA generates a first MIC using the PTK and transmits an uplink AMP frame carrying the SNonce and the first MIC.
o After receiving the uplink AMP frame from the non-AP AMP STA, the AMP AP generates a PMK, and a PMKID.
o The AMP AP generates a Pairwise Transient Key (PTK) using the ANonce, the SNonce, and the PMK and verifies the first MIC using the PTK.
o If the first MIC is verified, the AMP AP saves the PMK and PMKID, generates a second MIC and transmits a second downlink AMP frame carrying the second MIC to the non-AP AMP STA.
o Note - The PMK generation mechanism is TBD.
Supporting documents: 25/819r0, 24/1548r2
SP6: Do you agree to add the following text to TGbp SFD?
§ 802.11bp defines a mechanism to generate a Pairwise Master Key (PMK) and a Pairwise Transient Key (PTK) at an Active Tx non-AP AMP STA to support secure communication, where:
o After receiving the second downlink AMP frame carrying the second MIC, the non-AP AMP STA verifies the second MIC using the PTK.
o If the second MIC is verified, the non-AP AMP STA saves the PMK and PMKID.
o Note – Applicable to Active Tx non-AP AMP STAs with long term memory storage capability
Supporting documents: 25/819r0, 24/1548r2
SP7: Do you agree to add the following text to TGbp SFD?
- Existing 802.11 confidentiality and integrity protocols (i.e., CTR with CBC-MAC protocol (CCMP), Galois/Counter Mode (GCM) protocol (GCMP), broadcast/multicast integrity protocol (BIP)) is used for data confidentiality (i.e., encryption) and/or authentication of AMP frames.
Best Regards,
Rojan Chitrakar
From: lipanpan (D) <00002fa7231ab79a-dmarc-request@xxxxxxxxxxxxxxxxx>
Sent: Thursday, May 15, 2025 8:23 AM
To: STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBP] [EXT] Re: [STDS-802-11-TGBP] SP request
Hi Bo,
Could you please help queue the following SP for the May meeting agenda?
- Do you agree to add the following text to TG bp SFD?
- 11bp defines at least one mode of MAC/PHY that supports mono-static backscattering communication in sub-1 GHz.
Supporting contribution: [11/25-0816]
Thank you!
Panpan
From: Nelson Costa <nelson@xxxxxxxx>
Sent: Thursday, May 15, 2025 10:59 AM
To: STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBP] [EXT] Re: [STDS-802-11-TGBP] SP request
Hi Bo,
Could you please help queue the following SPs for the May meeting agenda?
[SP1]
Do you agree to add the following content to TGbp SFD?
. 11bp defines one mode of backscattering with carrier center frequency shift.
Supporting contributions: 11-25/0265, 11-25/0265
[SP2] (informational only)
Do you agree that 11bp should define at least one standard receiver model?
Supporting contribution: 11-25/0806
Thank you!
Nelson.
On Wed, May 14, 2025 at 5:17 PM Rui Cao <rui.cao_2@xxxxxxx> wrote:
Hi Bo,
Please add the following SP to the agenda:
SP1: Do you agree to add the following to 11bp SFD?
- The SYNC, Data field and Excitation field of 11bp DL PPDU use OFDM symbol as base carrier waveform for OOK modulated AMP communication.
Supporting contribution: [11-25/0797, 11-25/0305, 11-25/0325]
SP2: Do you agree to add the following to 11bp SFD?
- The base OFDM symbol is defined as 4us OFDM symbol, and generated by performing 64-point IFFT of the predefined sequence and pre-append the last 0.8us waveform as the cyclic prefix
Supporting contribution: [11-25/0797, 11-25/0305, 11-25/0325]
SP3: Do you agree to add the following 11bp SFD?
- The maximum allowed clock inaccuracy for the backscattering tag using OOK modulation is 100,000 ppm for both receive mode and backscattering transmit mode?
Supporting contribution: [11-25/0798, 11-24/1237]
Thanks,
Rui
From: You-Wei Chen <ywchen77115@xxxxxxxxx>
Sent: Wednesday, May 14, 2025 1:33 PM
To: STDS-802-11-TGBP@xxxxxxxxxxxxxxxxx
Subject: [EXT] Re: [STDS-802-11-TGBP] SP request
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Dear Bo,
Can you add the following SP to the SP list? many thanks
- Do you agree to add the following text to TGbp SFD?
- IEEE 802.11bp defines 4 base sequences used for AMP DL/UL SYNC field in 2.4GHz frequency band.
- 1 base sequences, S1, for DL non-backscatter SYNC field. S1 and a function of S1, are used for different DL data rate.
- 1 sequence, S2, for DL backscatter SYNC field.
- 1 base sequence, S3, for UL active transmission SYNC field.
- 1 sequence, S4, for UL backscatter SYNC field.
- Detailed SYNC sequence designs are TBD
- Besides the above 4 base sequences, the need of additional sequence S5 is TBD if mono-static and bi-static backscattering UL SYNC field design is different.
BR,
You-Wei Chen
Sanket Kalamkar <000033b8f79f2eb4-dmarc-request@xxxxxxxxxxxxxxxxx> 於 2025年5月14日 週三 下午2:40寫道：
Hi Bo,
Can you please help queue the following SPs for 11bp May meeting agenda? All SPs are for SFD motion.
[SP1] Do you agree that 802.11bp defines an AMP Wake-Up frame, which an AMP AP transmits to AMP-enabled non-AP STA(s) to indicate that the AP intends to exchange non-AMP frames with the non-AP STA?
o The expectation is to reuse WUR frame format for the AMP Wake-Up frame and to carry it in an AMP PPDU
Supporting contribution: 11-25/0779r0
[SP2] Do you agree that 802.11bp defines an AMP duty cycle operation for an AMP-enabled non-AP STA, which follows the state transition diagram shown in the figure?
o AMP duty cycle operation follows the negotiation procedure defined for WUR in the baseline
Supporting contribution: 11-25/0779r0
[SP3] Do you agree that if an AMP-enabled non-AP STA successfully receives an AMP Wake-Up frame from the associated AMP AP, the non-AP STA should transition to the Awake State and transmit a PS-Poll/UL frame to the AP to indicate that it is in the Awake State (PS/Active mode)?
Supporting contribution: 11-25/0779r0
[SP4] Do you agree that if the non-AP STA transmits a frame with PM = 1 to the associated AP, then the non-AP may transition to the Doze state, and the AMP-enabled non-AP STA shall enter the AMP mode?
Supporting contribution: 11-25/0779r0
[SP5] Do you agree that 802.11bp defines:
o AMP temporal key (ATK) to protect individually addressed AMP frames
o AMP integrity group temporal key (AIGTK) to protect group addressed AMP frames
Supporting contribution: 11-25/0779r0
[SP6] Do you agree that 802.11bp uses the baseline authentication procedure to generate AMP temporal key(s) to protect individually and group addressed AMP frames?
Supporting contribution: 11-25/0779r0
[SP7] Do you agree that an AMP-enabled non-AP STA and the associated AMP AP use AMP mode setup to exchange AMP capabilities?
o AMP mode setup may occur during the association procedure or post-association
Supporting contribution: 11-25/0779r0
[SP8] Do you agree that the clock error requirement of an AMP-enabled non-AP STA in AMP power state is the same as that of an Active Tx non-AP AMP STA?
Supporting contribution: 11-25/0779r0
[SP9]: Do you agree that 802.11bp defines a mechanism to generate a transient key at the AMP client to support secure communication, where:
- An AP transmits a downlink frame containing an ANonce.
- After receiving the downlink AMP frame from the AP that contains an ANonce, an AMP client generates an SNonce.
- The client generates a transient key using the ANonce, the SNonce, and a Pairwise Master Key (PMK) between the AP and the client.
- Note1—The mechanism to generate PMK is TBD.
- Note2—Whether to include backscatter clients is TBD.
Supporting document: 11-24/2112
[SP10]: Do you agree that 802.11bp defines a mechanism to generate a transient key at the AP to support secure communication, where:
- In response to the downlink AMP frame from the AP that contains an ANonce, the AMP client transmits an uplink AMP frame that carries the SNonce and a MIC.
- The client generates the MIC using the derived transient key at the client.
- If the MIC is verified, the AP uses the ANonce it transmitted in the previous downlink AMP frame, the SNonce, and the PMK to generate the transient key.
- Note—Whether to include backscatter clients is TBD.
Supporting document: 11-24/2112
[SP11]: Do you agree that the transient key generation at the AP and the AMP client in 802.11bp may occur concurrently with AMP downlink and uplink data communication:
· The downlink AMP frame from the AP carries ANonce along with downlink data from the AP (e.g., AMP trigger).
· The uplink AMP frame from the AMP client carries SNonce and MIC along with the UL data (e.g., UL response to the AMP trigger).
· Note—Whether to include backscatter clients is TBD.
Supporting document: 11-24/2112
[SP12]: Do you agree that the transient key generation at the AP and the AMP client in 802.11bp may be performed immediately before AMP downlink and uplink data communication:
- Once the transient key is derived at both the AP and the AMP client, subsequent AMP data communication between the AP and the client can be secured using MIC and/or encryption based on the generated transient key.
- Note—Whether to include backscatter clients is TBD.
Supporting document: 11-24/2112
Best,
Sanket
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