US 12,015,459 B2
Position control of adaptive phase-changing devices
Jibing Wang, San Jose, CA (US); and Erik Richard Stauffer, Sunnyvale, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Appl. No. 17/997,587
Filed by Google LLC, Mountain View, CA (US)
PCT Filed May 17, 2021, PCT No. PCT/US2021/032748
§ 371(c)(1), (2) Date Oct. 31, 2022,
PCT Pub. No. WO2021/236510, PCT Pub. Date Nov. 25, 2021.
Claims priority of provisional application 63/026,555, filed on May 18, 2020.
Prior Publication US 2023/0208479 A1, Jun. 29, 2023
Int. Cl. H04B 7/0456 (2017.01); H04B 7/026 (2017.01); H04B 7/06 (2006.01)
CPC H04B 7/0456 (2013.01) [H04B 7/026 (2013.01); H04B 7/0617 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a base station for configuring an adaptive phase-changing device (APD) the method comprising:
receiving from a user equipment (UE) at least one link quality parameter that is indicative of a channel impairment;
identifying, using the at least one link quality parameter, a surface configuration for a reconfigurable intelligent surface (RIS) of the APD that mitigates the channel impairment by transforming characteristics of a wireless signal propagated between the base station and the UE;
determining, using the at least one link quality parameter, a position configuration for the APD to mitigate the channel impairment by changing a position of the APD;
transmitting, to the APD using an adaptive phase-changing device control channel, APD-control-channel, a first indication that indicates the identified surface configuration;
transmitting a second indication that indicates the determined position configuration to the APD; and
communicating with the UE using the APD by:
transmitting, a downlink wireless signal for the UE towards the RIS of the APD; or
receiving an uplink wireless signal from the UE, the uplink wireless signal being transformed by the RIS of the APD.