Patent ID: 8391243
Filing Date: 2013-03-05
Classification: H04L,H04W

Abstract:
1. A method of managing a tunnel to provide mobile node mobility when a mobile node moves from an existing visiting network to a visiting network which supports a mobile IP, the method comprising: (a) detecting, by a mobile node, a movement of the mobile node and configuring a care-of address (CoA) and thereafter transmitting a location registration (Binding Update) message to a home agent; (b) creating, by the mobile node, a second tunnel in the visiting network and setting the second tunnel as a receiving-only tunnel while maintaining a first tunnel which is already used in the existing visiting network; (c) receiving, by the mobile node, a location registration completion (Binding Acknowledgement) message from the home agent; and (d) changing, by the mobile node, the second tunnel to the tunnel capable of transmitting/receiving by modifying a routing table, and canceling the first tunnel.