Patent ID: 7885655
Filing Date: 2011-02-08
Classification: H04W

Abstract:
1. A switch method for ensuring communication continuity, comprising: when a switch occurs to a Mobile Station (MS), a Mobile Switching Center (MSC) Server controlling a Media Gateway (MGW) establishing in a context a new termination connecting to a new ground circuit before the switch of the MS, the MSC Server setting a network topology relationship between an original termination and a termination corresponding to the opposite user or network as a normal network topology relationship; after the establishment of the new termination, the MSC Server setting the network topology relationship between the new termination and the opposite termination as a switch network topology relationship; after the MS switching to a new wireless channel, the MGW controlling the new termination inheriting a resource channel of the original termination connecting to an original ground circuit, and continuing with the communications through the resource channel before the MGW controlling the new termination inheriting the resource channel from the original termination, the MSC Server instructing the MGW to transfer the resource channel from the original termination to the new termination, wherein the step of instructing comprises: the MSC Server modifying the network topology relationship between the original termination and the opposite termination to a switch network topology relationship, and modifying the network topology relationship between the new termination and the opposite termination to a normal network topology relationship; and the step of controlling the new termination inheriting the resource channel comprises: the MGW controlling the new termination inheriting the resource channel of the original termination according to the changes of the network topology between the opposite termination and the original termination and between the opposite termination and the new termination.