US 12,092,719 B2
Harmonic wireless signal capture to map a structural environment
Wilfred I. Tucker, Centennial, CO (US); and Jeremy Nuss, Englewood, CO (US)
Assigned to T-Mobile USA, Inc., Bellevue, WA (US)
Filed by T-MOBILE USA, INC., Bellevue, WA (US)
Filed on Jul. 29, 2021, as Appl. No. 17/388,443.
Prior Publication US 2023/0036560 A1, Feb. 2, 2023
Int. Cl. G01S 13/00 (2006.01); G01S 7/00 (2006.01); G01S 13/04 (2006.01); G01S 13/89 (2006.01); G01S 5/02 (2010.01)
CPC G01S 13/003 (2013.01) [G01S 7/006 (2013.01); G01S 13/04 (2013.01); G01S 13/89 (2013.01); G01S 5/0269 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A system for radio-frequency imaging of a structural environment, the system comprising:
one or more radio devices, located at one or more first locations and configured to transmit radio signals;
a radio imaging device, located at a second location different from the one or more first locations, and configured to:
receive, at a first time, first radio signals transmitted by the one or more radio devices, wherein the first radio signals received by the radio imaging device at the first time are scattered, reflected, or attenuated by an object, and the object is collocated with an active localization device; and
receive, at a second time, second radio signals transmitted by the one or more radio devices, wherein the second radio signals received by the radio imaging device at the second time are scattered, reflected, or attenuated by the object, and the object is not collocated with the active localization device; and
one or more processors, configured to:
obtain an indication of a third location of the active localization device at the first time, the third location being different from the second location;
based on the first radio signals received by the radio imaging device at the first time and the indication of the third location, generate a radio signature for the object associated with the third location;
based on the second radio signals received by the radio imaging device at the second time and the radio signature generated by the radio imaging device, compute a score indicative of a likelihood that the object is at the third location at the second time, wherein the score is a comparison score indicative of a similarity between the second radio signals received by the radio imaging device at the second time and the radio signature generated by the radio imaging device;
compare the score to a threshold; and
generate a notification that the object is at the third location when the score is above the threshold.