The Study on SRv6 for User Plane in 5G-Advanced and 6G Mobile Networks.

SRv6 (Segment Routing over IPv6) is currently the ever-emerging new IP transport technology that pledges to remove a lot of complexity, while at the same time providing network programmability and integration with higher-layer application, which have been widely considered in the next generation of mobile core transport networks. With significant advantages of programmability, scalability, flexibility and simplification, SRv6 has been suggested to be adopted to 5G mobile core network for replacing a specific type of tunneling protocol (GTP-U: GPRS Tunneling Protocol User Plane) over which user-plane data traverses. We propose, after reviewing the SRv6 architecture and 5G mobile system (5GS), the signaling procedures related to session management under mobile core networks using SRv6 to make the 5G core network architecture more flexible.