US 12,253,592 B2
Techniques for intelligent reflecting surface (IRS) position determination in IRS aided positioning
Mehmet Izzet Gurelli, San Diego, CA (US); Qiang Wu, San Diego, CA (US); Junyi Li, Fairless Hills, PA (US); Tao Luo, San Diego, CA (US); Navid Abedini, Basking Ridge, NJ (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 Feb. 23, 2022, as Appl. No. 17/652,217.
Prior Publication US 2023/0266457 A1, Aug. 24, 2023
Int. Cl. G01S 13/75 (2006.01); G01S 13/87 (2006.01); H01Q 15/14 (2006.01); H04B 7/04 (2017.01)
CPC G01S 13/75 (2013.01) [G01S 13/876 (2013.01); H01Q 15/148 (2013.01); H04B 7/04013 (2023.05)] 30 Claims
OG exemplary drawing
 
1. A method for wireless communication by a user equipment (UE), comprising:
setting a surface phase for each intelligent reflecting surface (IRS) of one or more IRSs based on a real focal point or a virtual focal point;
for each respective IRS of the one or more IRSs:
identifying a first IRS reflection center;
measuring an impulse response from the respective IRS using one or more first transmissions from a network entity that are reflected to the UE using the respective IRS, to obtain a first measured impulse response representation, wherein the first measured impulse response representation comprises a first histogram of measured delays for a plurality of rays through different points over a surface area of the respective IRS;
determining a first impulse response for a first ray reflected from the first IRS reflection center of the respective IRS;
estimating a first position of the UE based on the first IRS reflection center and the first impulse response for each of the respective IRS of the one or more IRSs; and
estimating a second position of the UE in an iterative manner until one or more conditions are satisfied.