ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,425,077, issued on Sept. 23, was assigned to SoftBank Corp. (Tokyo).

"Massive MIMO for HAPS based on angle information on user apparatus" was invented by Koji Tashiro (Tokyo), Mitsukuni Konishi (Tokyo), Kenji Hoshino (Tokyo), Yoshichika Ota (Tokyo) and Atsushi Nagate (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "In an upper-airspace staying type communication relay apparatus that performs an MU-MIMO radio communication with plural terminal apparatuses located in a cell, it is intended to improve the communication quality of the entire cell and enhance the system capacity, while suppressing an increase in overhead in the terminal apparatus and t...