Patent ID: 11856650

Abstract:
The present disclosure provides a method for implementing communication continuity at a computer device acting as an application function (AF) device corresponding to user equipment (UE), the UE establishing a wireless connection to a source application server (AS) using allocated UE source network address information. The method includes: determining a data service migration from the source AS to a target AS; transmitting a network address translation (NAT) parameter to a session management function (SMF), so that the SMF determines a target user plane function (UPF)/protocol data unit (PDU) session anchor (PSA) for performing NAT translation on a received data packet according to the NAT parameter; and configuring a third NAT parameter for the target AS according to the NAT parameter, and migrating the data service from the source AS to the target AS, so that the target AS performs NAT translation on the data packet according to the third NAT parameter.