ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,538,225, issued on Jan. 27, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).

"Method for monitoring physical downlink control channel and communications apparatus" was invented by Haibo Xu (Beijing), Jian Wang (Beijing) and Haitao Liu (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and/or a communications apparatus controls a monitoring of a physical downlink control channel. The method includes: receiving, by a terminal device, a first message sent by a network device, where the first message includes M sleep time sets, and the sleep time is used to indicate a time length in which monitoring the PDCCH is stopped...