公开(公告)号：US20250130326A1

公开(公告)日：2025-04-24

申请号：US18491698

申请日：2023-10-20

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Osama SHAHID ,  Peyman SIYARI ,  Xiaoxin ZHANG

IPC: G01S13/56 ,  G01S7/00 ,  G01S7/03 ,  G01S13/08

Abstract: Aspects presented herein may improve the accuracy and reliability of radio frequency (RF) sensing performed by wireless devices, which may include detection of living objects with minimal movements (e.g., breathing). In one aspect, a UE receives a set of signals over a time period, where each signal in the set of signals includes a superposition of multipath signals traversed by the signal and a leakage signal. The UE filters out the leakage signal from each signal in the set of signals to obtain the superposition of the multipath signals for each signal. The UE detects whether there is a variance across the filtered set of signals over the time period. The UE identifies a presence of at least one moving object in response to the detection of the variance.

公开(公告)号：US20240259060A1

公开(公告)日：2024-08-01

申请号：US18160534

申请日：2023-01-27

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Osama SHAHID ,  Peyman SIYARI ,  Xiaoxin ZHANG

IPC: H04B7/06

CPC classification number: H04B7/0626

Abstract: In some implementations, a device may obtain channel state information (CSI) corresponding to each subcarrier of a plurality of subcarriers in a set of RF transmissions comprising at least the plurality of subcarriers. The device may extract phase information of the CSI corresponding to each subcarrier and determine, for each subcarrier, a frequency spectrum from the phase information of the CSI, where the frequency spectrum comprises phase change values of the CSI corresponding to the respective subcarrier for a plurality of frequencies. The device may determine a breathing rate from the frequency spectrum of the CSI corresponding to a subcarrier set comprising one or more of the subcarriers, the breathing rate corresponding to a phase change value in the frequency spectrum within a predetermined range of frequencies for breathing rates. The device may output an indication of the determined breathing rate.