ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,648, issued on June 24, was assigned to Huawei Technologies Co. Ltd. (Shenzhen, China).
"Master/backup negotiation method and device" was invented by Li Deng (Beijing) and Jingjing Bao (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A network system comprises a first control unit, a second control unit, and a subscriber unit. The first control unit periodically sends a heartbeat message to the subscriber unit. the subscriber unit forwards received heartbeat messages to a second control unit. The second control unit makes a master/backup decision based on the heartbeat messages and whether a heartbeat message is received in a respective perio...