公开(公告)号：US20240073858A1

公开(公告)日：2024-02-29

申请号：US17823796

申请日：2022-08-31

Applicant: Verizon Patent and Licensing Inc.

Inventor： Sagar Deepak MAHURKAR ,  Anjaneya PERICHARLA ,  Praveen ATREYA ,  Srirama R. KALIDINDI ,  Sanjay AHUJA ,  Heather E. MCDAVITT

IPC: H04W64/00 ,  H04B7/06

CPC classification number: H04W64/006 ,  H04B7/0626

Abstract: In some implementations, a first device may obtain first channel state information (CSI) of a second device. The first device may determine that a variance of the first CSI exceeds a variance threshold. The first device may determine that a motion event has occurred based on determining that the variance, of the first CSI, exceeds the variance threshold. The first device may determine a location of the motion event based on the first CSI and second CSI of a third device. The first device may adjust an operation of one or more devices associated with the location based on determining the motion event.

公开(公告)号：US20230245539A1

公开(公告)日：2023-08-03

申请号：US17649742

申请日：2022-02-02

Applicant: Verizon Patent and Licensing Inc.

Inventor： Sagar Deepak MAHURKAR ,  Anjaneya PERICHARLA ,  Sanjay AHUJA ,  Srirama R. KALIDINDI

IPC: G08B13/196 ,  G08B13/184

CPC classification number: G08B13/19623 ,  G08B13/184 ,  G08B13/19656

Abstract: A device may receive radio frequency (RF) transmissions from access points provided in a zone, and may calculate channel state information (CSI) for the access points based on the RF transmissions. The device may identify CSI phases that satisfy a phase threshold to eliminate surrounding movement in the zone and to focus on an entry location of the zone, and may perform a short-time Fourier transform of the CSI phases to generate a frequency versus time graph. The device may perform a spectrogram analysis of the frequency versus time graph or may process the frequency versus time graph, with a machine learning model, to determine a quantity of people in the zone and a start and stop times associated with entries and exits of the people to and from the zone. The device may perform actions based on the quantity of people and the start and stop times.