ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,542,749, issued on Feb. 3, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).

"Service protection method and network node" was invented by Hao Li (Wuhan, China), Gang Xie (Wuhan, China) and Timing Fu (Dongguan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A service protection method includes a first node that determines that a fault has occurred on a first working path, and generates a service switching message based on the fault on the first working path. The first node sends the service switching message on a first protection path, where the service switching message indicates to adjust a bandwidth of a service from a guard bandwi...