Service continuity guarantee method, control plane gateway, and mobility management network element

摘要

Embodiments of the present invention provide a method of guaranteeing service continuity, a control plane gateway, and a mobility management network element. The method includes receiving, by the C-GW, current location information of the UE sent by the mobility management network element; Selecting, by the C-GW, at least one forwarding D-GW for the UE according to the current location information of the UE; Establishing a data forwarding tunnel between the source D-GW of the UE and the forwarding D-GW, and a data forwarding tunnel between the forwarding D-GW and the target base station of the UE, by the C-GW for the UE- data forwarding tunnel Are used to transmit the uplink user plane data and / or the downlink user plane data of the UE during the movement of the UE.