ALEXANDRIA, Va., June 16 -- United States Patent no. 12,309,737, issued on May 20, was assigned to T-Mobile USA Inc. (Bellevue, Wash.).
"Transition from backup SMF to primary SMF" was invented by Saravana Velusamy (Overland Park, Kan.) and Narayanan Govindan Kasi (Olathe, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A Session Management Function (SMF) of a 5G core network can serve as a backup SMF for UEs associated with a particular Tracking Area Code (TAC). If a primary SMF for the TAC is unavailable, UEs can be assigned to the backup SMF for the TAC. The backup SMF can determine, by querying a Network Repository Function (NRF), when the primary SMF for the TAC becomes available. When the backup SMF...