ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,531,673, issued on Jan. 20, was assigned to InterDigital Patent Holdings Inc. (Wilmington, Del.).

"Systems and methods for collision resolution in a wifi OFDMA system" was invented by Hanqing Lou (Syosset, N.Y.), Alphan Sahin (Westbury, N.Y.), Li-Hsiang Sun (San Diego), Xiaofei Wang (North Caldwell, N.J.), Rui Yang (Greenlawn, N.Y.) and Frank La Sita (Setauket, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and system may be used for collision detection for orthogonal frequency division multiple access (OFDMA)-based random access. A wireless transmit/receive unit (WTRU) may receive, from an access point (AP), a first trigger frame triggerin...