US 12,476,682 B2
Method and apparatus for OAM beam communication
Liangang Chi, Beijing (CN); Feng Zheng, Beijing (CN); and Siwei Ji, Beijing (CN)
Assigned to BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Appl. No. 18/684,636
Filed by BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
PCT Filed Aug. 19, 2021, PCT No. PCT/CN2021/113640
§ 371(c)(1), (2) Date Feb. 16, 2024,
PCT Pub. No. WO2023/019532, PCT Pub. Date Feb. 23, 2023.
Prior Publication US 2024/0372586 A1, Nov. 7, 2024
Int. Cl. H04L 5/12 (2006.01); H04B 7/06 (2006.01)
CPC H04B 7/0617 (2013.01) [H04B 7/0639 (2013.01); H04B 7/0695 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for orbital angular momentum (OAM) beam communication, performed by a transmitter, comprising:
transmitting a reference signal (RS) to a receiver;
receiving feedback information provided by the receiver based on the RS;
determining a weight vector corresponding to the transmitter based on the information, wherein the weight vector adjusts a divergence angle of an OAM beam transmitted by the transmitter;
determining an OAM signal to be transmitted, and adjusting a divergence angle of the OAM signal to be transmitted based on the weight vector to obtain an adjusted OAM beam;
transmitting the adjusted OAM beam;
wherein receiving the feedback information provided by the receiver comprises:
receiving a communication distance between the transmitter and the receiver and a receiving radius of a receiving array at the receiver which are transmitted by the receiver;
wherein determining the weight vector corresponding to the transmitter based on the information comprises:
determining an optimal weight vector of the transmitter which matches the receiving array at the receiver based on the communication distance and the receiving radius of the receiving array.