	US 12,476,847 B2
	Radio frequency sensing with channel impulse response
Pooria Pakrooh, San Diego, CA (US); Bin Tian, San Diego, CA (US); Stephen Jay Shellhammer, Ramona, CA (US); Koorosh Akhavan, San Diego, CA (US); Le Nguyen Luong, San Diego, CA (US); and Ishaque Ashar Kadampot, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on May 26, 2022, as Appl. No. 17/804,243.
Claims priority of provisional application 63/269,032, filed on Mar. 8, 2022.
Prior Publication US 2023/0291610 A1, Sep. 14, 2023
Int. Cl. H04L 25/02 (2006.01); H04W 52/52 (2009.01)

CPC H04L 25/0212 (2013.01) [H04W 52/52 (2013.01)]

30 Claims

1. A responding device for wireless communication, comprising:

one or more memories; and

one or more processors, coupled to the one or more memories, configured to:

receive a signal from an initiating device;

estimate, from the signal, a channel impulse response (CIR) that represents signal reflections from one or more objects as multiple taps;

select one or more taps, from the multiple taps, that are within a first time window that starts at a first offset from a reference point and that has a first specified time duration; and

transmit, to the initiating device, a CIR report that indicates the one or more taps, wherein the CIR report includes the first specified time duration and the first offset.