The embodiment of the invention provides a method, a device and a system for realizing service continuity. A method for realizing business continuity, receiving the first message is sent off the network state remote UE via the relay UE, the first message includes a first IP PGW address assigned to the remote UE; the relay UE receives the first message, sent to MME second news, in order to make the MME message to the PGW to send third, the second message and the third message includes the first IP address; among them, the third message is used to determine the PGW binding relationship; the relay of UE according to the first IP address and the IP address second, determining the binding relationship, and according to the the binding relationship, through the relay UE to achieve communication between the PGW and the remote UE; solve the problems in the prior art, when the remote UE by in state to state mesh network, communication interruption problem.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。
【技术保护点】
PCT国内申请，权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请，...
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