US 11,870,722 B2
Multiple reconfigurable intelligent surface assisted sidelink ranging and positioning
Anantharaman Balasubramanian, San Diego, CA (US); Shuanshuan Wu, San Diego, CA (US); Kapil Gulati, Belle Mead, NJ (US); Junyi Li, Fairless Hills, PA (US); and Sourjya Dutta, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 23, 2021, as Appl. No. 17/409,689.
Prior Publication US 2023/0055627 A1, Feb. 23, 2023
Int. Cl. H04W 72/04 (2023.01); H04W 76/00 (2018.01); H04L 5/00 (2006.01)
CPC H04L 5/0048 (2013.01) 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a first user equipment (UE), comprising:
memory; and
at least one processor coupled to the memory and configured to:
initiate a ranging operation; and
transmit, as a part of the ranging operation, a reference signal at multiple time instances based on an activation time and a deactivation time for at least one reconfigurable intelligent surface (RIS); and
determine a range measurement or a location for the first UE based on reflections of the reference signal from the at least one RIS or a response, to the reference signal, from a second UE via the at least one RIS.