Tunnel management method and apparatus for reducing packet losses of a mobile terminal in supporting mobile IP environment

Mobile case of using the IP, the mobile terminal to the time difference between the handover complete message reception time and the actual tunnel creation time of completion of generation of receiving after network move, and a packet loss may occur during this time to support IP mobility of the mobile station have. The present invention relates to a method for managing a tunnel in order to provide mobility of the terminal if the terminal moves to the visited network in the visited network in the network to support a mobile IP to the top, (a) a mobile node moves after the detection, it configures a care of address (CoA) transmitting a location registration (Binding Update) message to the home agent; (B) a step of creating a second tunnel to the new visited network while maintaining the first tunnel, the mobile node that is already used by an existing visited network set up the second tunnel with a receive-only; (C) transmitting step to receive the mobile node completes registration position from the home agent (Binding Acknowledgement) message; Characterized in that it comprises a and (d) deleting the mobile node is the second change and the first tunnel to enable the sending and receiving tunnel while modifying the routing table. Mobile IP, mobile terminal, mobile node, a handover, packet loss, the tunnel management