Adaptation of secure sounding signal to bandwidth variation

Patent metadata

Field	Value
Publication number	US-12132676-B2
Application number	US-202318190906-A
Country	US
Kind code	B2
Filing date	Mar 27, 2023
Priority date	Jan 7, 2019
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

This disclosure describes systems, methods, and devices related to adaptation of secure sounding signal. A device may determine a negotiated bandwidth to be used when communicating with a first station device. The device may determine a first bit stream used to generate a cyclic shift diversity (CSD) value based on the negotiated bandwidth, wherein a first number of bits is used for the first bit stream when a first negotiated bandwidth is used, and wherein a second number of bits is used for the first bit stream when a second negotiated bandwidth is used. The device may determine a second bit stream used to generate a random phase. The device may determine a secure a long training field (LTF) based on a combination of the first bit stream and the second bit stream. The device may cause to send a frame to the first station device, wherein the frame comprises the secure LTF.

First claim

What is claimed is:

1. A device, the device comprising processing circuitry coupled to storage, the processing circuitry configured to:
identify an initial fine timing measurement request (IFTMR) frame from an initiating STA (ISTA), the IFTMR frame including the ISTA's preference or support for parameters used in a ranging measurement;
cause to send an IFTM frame to the ISTA, the IFTM frame including parameters to be used in the ranging measurement;
transmit a beacon frame or a probe response to the ISTA, wherein the beacon frame or the probe response comprises an extended capabilities element that comprises an indication for phase shift feedback; and
determine phase shift feedback type support for the RSTA-to-ISTA location measurement report (LMR) based on the RSTA-to-ISTA phase shift feedback field set in the IFTMR frame or the IFTM frame.

2. The device of claim 1 , wherein the IFTMR frame or the IFTM frame further include an ISTA-to-RSTA phase shift feedback field to indicate the ISTA's support for phase shift feedback in an ISTA-to-RSTA LMR.

3. The device of claim 2 , wherein the phase shift feedback is included in the ISTA-to-RSTA LMR based on the ISTA-to-RSTA phase shift feedback field setting in the IFTM frame.

4. The device of claim 1 , wherein the phase shift feedback support field is set to 1 when dot11PhaseShiftFeedbackImplemented is true.

5. The device of claim 1 , wherein the RSTA-to-ISTA Phase Shift Feedback field in the IFTM frame, when set to 1, confirms that the RSTA-to-ISTA LMR will include phase shift feedback.

6. The device of claim 5 , wherein if the RSTA-to-ISTA Phase Shift Feedback field is set to 0 in the IFTM frame, the RSTA indicates that it does not include phase shift feedback in the RSTA-to-ISTA LMR.

7. The device of claim 1 , wherein the processing circuitry is further configured to utilize an invalid measurement indication in the time of arrival (ToA) error field of RSTA-to-ISTA LMR and ISTA-to-RSTA LMR frames.

8. The device of claim 7 , wherein the ToA error field of the RSTA-to-ISTA LMR or the ISTA-to-RSTA LMR is set to 1 to indicate that RSTA-to-ISTA LMR or the ISTA-to-RSTA LMR does not have a valid measurement.

9. The device of claim 1 , further comprising a transceiver configured to transmit and receive wireless signals.

10. The device of claim 9 , further comprising an antenna coupled to the transceiver to cause to send the IFTM frame.

11. A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors result in performing operations comprising:
identifying an initial fine timing measurement request (IFTMR) frame from an initiating STA (ISTA), the IFTMR frame including the ISTA's preference or support for parameters used in a ranging measurement;
causing to send an IFTM frame to the ISTA, the IFTM frame including parameters to be used in the ranging measurement;
transmitting a beacon frame or a probe response to the ISTA, wherein the beacon frame or the probe response comprises an extended capabilities element that comprises an indication for phase shift feedback; and
determining phase shift feedback type support for the RSTA-to-ISTA location measurement report (LMR) based on the RSTA-to-ISTA phase shift feedback field set in the IFTMR frame or the IFTM frame.

12. The non-transitory computer-readable medium of claim 11 , wherein the IFTMR frame or the IFTM frame further include an ISTA-to-RSTA phase shift feedback field to indicate the ISTA's support for phase shift feedback in an ISTA-to-RSTA LMR.

13. The non-transitory computer-readable medium of claim 12 , wherein the phase shift feedback is included in the ISTA-to-RSTA LMR based on the ISTA-to-RSTA phase shift feedback field setting in the IFTM frame.

14. The non-transitory computer-readable medium of claim 11 , wherein the phase shift feedback support field is set to 1 when dot11PhaseShiftFeedbackImplemented is true.

15. The non-transitory computer-readable medium of claim 11 , wherein the RSTA-to-ISTA Phase Shift Feedback field in the IFTM frame, when set to 1, confirms that the RSTA-to-ISTA LMR will include phase shift feedback.

16. The non-transitory computer-readable medium of claim 15 , wherein if the RSTA-to-ISTA Phase Shift Feedback field is set to 0 in the IFTM frame, the RSTA indicates that it does not include phase shift feedback in the RSTA-to-ISTA LMR.

17. The non-transitory computer-readable medium of claim 11 , wherein the operations further comprise utilizing an invalid measurement indication in the time of arrival (ToA) error field of RSTA-to-ISTA LMR and ISTA-to-RSTA LMR frames.

18. The non-transitory computer-readable medium of claim 17 , wherein the ToA error field of the RSTA-to-ISTA LMR or the ISTA-to-RSTA LMR is set to 1 to indicate that RSTA-to-ISTA LMR or the ISTA-to-RSTA LMR does not have a valid measurement.

19. A method comprising:
identifying an initial fine timing measurement request (IFTMR) frame from an initiating STA (ISTA), the IFTMR frame including the ISTA's preference or support for parameters used in a ranging measurement;
causing to send an IFTM frame to the ISTA, the IFTM frame including parameters to be used in the ranging measurement;
transmitting a beacon frame or a probe response to the ISTA, wherein the beacon frame or the probe response comprises an extended capabilities element that comprises an indication for phase shift feedback; and
determining phase shift feedback type support for the RSTA-to-ISTA location measurement report (LMR) based on the RSTA-to-ISTA phase shift feedback field set in the IFTMR frame or the IFTM frame.

20. The method of claim 19 , wherein the IFTMR frame or the IFTM frame further include an ISTA-to-RSTA phase shift feedback field to indicate the ISTA's support for phase shift feedback in an ISTA-to-RSTA LMR.

Assignees

• Intel Corp

Inventors

• Jiang Feng
• Li Qinghua
• Chen Xiaogang
• Das Dibakar
• Gurevitz Assaf
• Segev Jonathan
• Stacey Robert
• Vituri Shlomi
• Weisman Tzahi

Classifications

• H04W28/20

  Negotiating bandwidth · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W88/08

  Access point devices · CPC title

• H04L5/0023

  Time-frequency-space · CPC title

• H04L5/0091

  Signalling for the administration of the divided path, e.g. signalling of configuration information · CPC title