US 12,463,705 B2
Detection of near-field location for wireless communications
Danlu Zhang, San Diego, CA (US); Vasanthan Raghavan, West Windsor Township, NJ (US); and Junyi Li, Fairless Hills, PA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 2, 2023, as Appl. No. 18/328,642.
Prior Publication US 2024/0405841 A1, Dec. 5, 2024
Int. Cl. H04W 4/00 (2018.01); H04B 7/06 (2006.01)
CPC H04B 7/06966 (2023.05) 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communications at a first wireless device, comprising:
memory;
a transceiver; and
at least one processor of the first wireless device, the at least one processor coupled with the memory and the transceiver and configured to cause the apparatus to:
receive, via the transceiver and a first antenna array, a plurality of reference signals from a second antenna array of a second wireless device;
measure a plurality of phases of the plurality of reference signals, wherein the plurality of phases correspond to respective antenna pairs that each comprise a respective first antenna of the first antenna array and a respective second antenna of the second antenna array;
determine, based at least in part on the plurality of phases, a plurality of angle parameters comprising a plurality of first order angle parameters and a plurality of second order angle parameters, wherein the plurality of first order angle parameters comprises linear terms associated with a distance between a first antenna of the first antenna array and a center of the first antenna array or a distance between a second antenna of the second antenna array and a center of the second antenna array, and wherein the plurality of second order angle parameters comprises quadratic terms associated with the distance between the first antenna of the first antenna array and the center of the first antenna array or the distance between the second antenna of the second antenna array and the center of the second antenna array;
determine that at least one second order angle parameter of the plurality of second order angle parameters satisfies an angle parameter threshold; and
communicate, via the transceiver, with the second wireless device based at least in part on the determination that at least one second order angle parameter of the plurality of second order angle parameters satisfies the angle parameter threshold.