Patent ID: 7620025

Claim:
A mobile communication method, enabled in a communication control device for networks, for performing a communication between a partner node and a mobile node that obtains a different temporary address assigned for a different network to which a temporary address is assigned for each network to which the mobile node migrates, wherein communications are consecutively performed between the partner node and the mobile node before and after the mobile node migrates, said method comprising: a transmitting step for the mobile node to transmit the temporary address to a previous visitor packet transfer device which the mobile node connected before the mobile node migrates, wherein the previous visitor packet transfer device receives a data packet from the partner node, which is transmitted to the temporary address of the mobile node; and a transferring step for the previous visitor packet transfer device to generate an encapsulated data packet and to transfer it to a new visitor packet transfer device which the mobile node connects after the mobile node migrates, wherein the new visitor packet transfer device transfers the data packet to an updated temporary address of the mobile node.