Method and apparatus for handover video conversation from packet exchange domain to line exchange domain

摘要

The present invention proposes a device and corresponding method for handing over a video conversation to the CS domain from the PS domain within the wireless network. When the signal of the network covered by the packet switched domain video conversation is currently located is disabled or poor, as long as the eNodeB and source MME detects the presence of video conversation and handover to the circuit-switched domain for Video bearer procedure is started, the handover request is sent to the MSC server. After receiving the handover request, and requests a resource to the target wireless network control devices in the circuit switched domain, to request the allocation of communication links required for video bearers. In addition, (at this time, the communication link is required for video bearer between the MSC server / MGW the UE is already established) a local UE performs handover to the target network after the MSC server and the local UE / MGW starts a negotiation to establish a logical communication channel for the video conversation. When the negotiation is successful, the logical communication channel for the transfer of video telephone service between the UE and the MSC server / MGW is established. In this way, a local UE can continue the video conversation with a remote UE through the MGW.