ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,638, issued on March 11, was assigned to InterDigital Patent Holdings Inc. (Wilmington, Del.).

"Method for efficient rediscovery and medium access for wake-up radios" was invented by Xiaofei Wang (North Caldwell, N.J.), Hanqing Lou (Syosset, N.Y.) and Joseph S. Levy (Merrick, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatuses are described herein for rediscovery and medium access for wake-up radios. For example, a wireless transmit receive unit (WTRU) may receive, via a first transceiver, a frame that includes a wake-up radio (WUR) operation element having a first counter value. The WTRU may deactivate the first transceiver...