ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,439,333, issued on Oct. 7, was assigned to RAKUTEN MOBILE INC. (Tokyo).

"Control system and control method" was invented by Makoto Ono (Tokyo), Kazushige Takeuchi (Tokyo) and Masahiro Kojima (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An operation control module executes, for each of a plurality of base station system groups, operation control corresponding to the degree of operation of a leader base station system included in the each of the plurality of base station system groups, with respect to a follower base station system included in the each of the plurality of base station system groups. A classification module reclassifies a plurality...