ALEXANDRIA, Va., July 21 -- United States Patent no. 12,689,892, issued on July 21, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).
"Communication method and apparatus" was invented by Longhua Guo (Shanghai), He Li (Shanghai), Yizhuang Wu (Beijing) and Rong Wu (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of this application provide a communication method and a related apparatus, to meet a multicast service data packet transmission security requirement. An access device may determine a user plane security active state of a multicast data radio bearer (DRB) in a protocol data unit (PDU) session, and indicate the user plane security active state of the multicast D...