ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,476,682, issued on Nov. 18, was assigned to BEIJING XIAOMI MOBILE SOFTWARE Co. LTD. (Beijing).
"Method and apparatus for OAM beam communication" was invented by Liangang Chi (Beijing), Feng Zheng (Beijing) and Siwei Ji (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for orbital angular momentum (OAM) beam communication includes: 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, in which, the weight vector adjusts a divergence angle of an OAM beam transmitted by the transmitter;...