US 11,889,462 B2
Systems and methods for bi-static radio-based object location detection
Sungwoo Park, Seoul (KR); Wooseok Nam, San Diego, CA (US); Tao Luo, San Diego, CA (US); Junyi Li, Fairless Hills, PA (US); Juan Montojo, San Diego, CA (US); Jing Sun, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); John Edward Smee, San Diego, CA (US); Peter Gaal, San Diego, CA (US); Taesang Yoo, San Diego, CA (US); and Simone Merlin, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 1, 2021, as Appl. No. 17/335,761.
Claims priority of provisional application 63/035,091, filed on Jun. 5, 2020.
Prior Publication US 2021/0385784 A1, Dec. 9, 2021
Int. Cl. H04W 64/00 (2009.01); G01S 13/48 (2006.01); H04W 24/10 (2009.01); G01S 3/46 (2006.01); G01S 13/00 (2006.01)
CPC H04W 64/006 (2013.01) [G01S 3/46 (2013.01); G01S 13/003 (2013.01); G01S 13/48 (2013.01); H04W 24/10 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for bi-static radio-based object location detection, the method comprising:
obtaining, at a first wireless device, a location of a second wireless device;
obtaining, at the first wireless device, a time-of-flight (ToF) and an angle of arrival (AoA) of a wireless wide-area network (WWAN) reference signal transmitted by a transmitting device, wherein the TOF and the AoA are obtained from measurements of the WWAN reference signal at a receiving device after the WWAN reference signal is reflected by an object; and
determining, with the first wireless device, a location of the object based on the location of the second wireless device, the ToF, and the AoA, wherein the AoA of the WWAN reference signal comprises a differential AoA (DAoA) indicative of an angle between a reflected path of the WWAN reference signal and a direct path between the first wireless device and the second wireless device;
wherein:
the first wireless device comprises the transmitting device and the second wireless device comprises the receiving device, or
the first wireless device comprises the receiving device and the second wireless device comprises the transmitting device.