Method and system for reducing latency in VoWi-Fi handover and packet switched registration

The invention relates to a method and system for reducing latency in VoWi-Fi handover and packet switched registration. The method includes triggering a router request router advertisement (RSRA) procedure to establish a transmission control protocol/internet protocol (TCP/IP) interface based on a determination that a VoWi-Fi handover of a user equipment (UE) is to be performed, determining whether a router advertisement (RA) is received within a first time interval, and in response to a determination that the RA is not received within the first time interval, triggering the router request router advertisement (RSRA) procedure to establish the transmission control protocol/internet protocol (TCP/IP) interface. A complete Internet Protocol version 6 (IPv6) address previously used by the UE is obtained, where the complete IPv6 address is used to establish the TCP/IP interface with the network. 本公开涉及减少VoWi-Fi切换和分组交换注册中的延迟的方法和系统。所述方法包括：基于确定将执行用户设备(UE)的VoWi-Fi切换，触发路由器请求路由器通告(RSRA)过程以建立传输控制协议/互联网协议(TCP/IP)接口，确定在第一时