US 11,901,972 B2
Angular relationship determination using focal point perturbation
Mehmet Izzet Gurelli, San Diego, CA (US); Qiang Wu, San Diego, CA (US); Junyi Li, Fairless Hills, PA (US); Navid Abedini, Basking Ridge, NJ (US); Tao Luo, San Diego, CA (US); and Ozge Koymen, Princeton, NJ (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 21, 2021, as Appl. No. 17/480,598.
Prior Publication US 2023/0089054 A1, Mar. 23, 2023
Int. Cl. H04B 7/04 (2017.01); G01S 3/46 (2006.01); G01S 5/02 (2010.01)
CPC H04B 7/04013 (2023.05) [G01S 3/46 (2013.01); G01S 5/0273 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a communication interface;
a memory; and
a processor communicatively coupled to the communication interface and the memory and configured to:
obtain a first phase difference indication corresponding to a first difference in phase between a first signal wirelessly received, at a first time, by a wireless signaling device from a transmitter and a second signal wirelessly received, at a second time that is different from the first time, by the wireless signaling device from the transmitter; and
determine a first angular relationship between the transmitter and the wireless signaling device based on the first phase difference indication, a first virtual focal point location of the first signal, and a second virtual focal point location of the second signal, the second virtual focal point location and the first virtual focal point location being different, wherein a virtual focal point location is a location from which a signal appears to originate based on a phase surface of the signal, and wherein the first angular relationship is a first angle from a first line, connecting the first virtual focal point location and the second virtual focal point location, to the wireless signaling device.