公开(公告)号：US20220357419A1

公开(公告)日：2022-11-10

申请号：US17315128

申请日：2021-05-07

Applicant: QUALCOMM Incorporated

Inventor： Hadi GIVEHCHIAN ,  Xiaoxin ZHANG ,  Peyman SIYARI

IPC: G01S5/02 ,  H04W4/029

Abstract: Methods and systems for generating map information of an environment using channel state information (CSI) of wireless signals received by access points (APs) in the environment are disclosed. In some implementations, a system uses CSI of a wireless signal received by a respective AP to determine a time-of-flight (ToF) and an angle-of-arrival (AoA) of one or more reflected path signal components of the wireless signal, and estimates the locations of points or surfaces in an area of the respective AP based on the ToF and AoA of the reflected path signal components. The estimated locations of the points or surfaces can be used to generate map information for the area. The system aggregates map information generated for different areas of the environment to determine map information for the entire environment. The wireless signals may be received from wireless stations or user equipment, or may be received from the respective AP.

公开(公告)号：US20230336946A1

公开(公告)日：2023-10-19

申请号：US17659602

申请日：2022-04-18

Applicant: QUALCOMM Incorporated

Inventor： Hadi GIVEHCHIAN ,  Xiaoxin ZHANG ,  Peyman SIYARI

IPC: H04W4/029 ,  G01S5/02

CPC classification number: H04W4/029 ,  G01S5/0294 ,  G01S5/0273 ,  G01S5/0246

Abstract: In some implementations, a method may comprise obtaining channel state information (CSI) data corresponding to a set of RF signals received by one or more receiving devices, wherein: the set RF signals comprises two or more reflected RF signals successively received by the one or more receiving devices after being reflected from a person, and the two or more reflected RF signals are received by the one or more receiving devices over a period of time. The method may further comprise determining an identity of the person based at least in part on an observed gait of the person and an observed shape of the person, wherein the observed gait of the person and the observed shape of the person are determined based at least in part on the CSI data. The method may further comprise outputting an indication of the determined identity of the person.