US 11,740,346 B2
Motion detection and localization based on bi-directional channel sounding
Oleksiy Kravets, Petersburg (CA); and Tajinder Manku, Waterloo (CA)
Assigned to Cognitive Systems Corp., Waterloo (CA)
Filed by Cognitive Systems Corp., Waterloo (CA)
Filed on Nov. 12, 2020, as Appl. No. 17/96,426.
Application 17/096,426 is a continuation of application No. 16/165,546, filed on Oct. 19, 2018, granted, now 10,852,411.
Claims priority of provisional application 62/595,331, filed on Dec. 6, 2017.
Prior Publication US 2021/0103045 A1, Apr. 8, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 13/56 (2006.01); G01S 7/41 (2006.01); G01S 13/00 (2006.01)
CPC G01S 13/56 (2013.01) [G01S 7/41 (2013.01); G01S 13/003 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A method, comprising:
obtaining first and second sets of beamforming state information based on first and second sets of wireless signals transmitted bi-directionally through a space between a first device and a second device during a timeframe,
wherein the first set of beamforming state information is based on the first set of wireless signals transmitted to the first device from the second device, and the second set of beamforming state information is based on the second set of wireless signals transmitted to the second device from the first device;
comparing a first variation indicated by the first set of beamforming state information with a second variation indicated by the second set of beamforming state information, wherein the comparison analyzes similarity of the first and second variations; and
based on the comparison of the first variation with the second variation, detecting a location of detected motion in the space during the timeframe.