System and method for recovering a damaged routing path in a mobile network

A method for registering, in a home agent, a location of at least one neighboring mobile router included in a different network in a mobile network including a first network and a second network, which is different from the first network, each of the first and second networks including a home agent, each of the home agents storing location information of a plurality of mobile routers of the network to which the home agent belongs, the method comprising:

• receiving, from the at least one neighboring mobile router located in the different network, a router advertisement message in a mobile router located in the network in which the home agent is present;
• acquiring address information of the at least one neighboring mobile router included in the router advertisement message in the mobile router;
• transmitting the acquired address information from the mobile router to the home agent thereof;
• and
• registering the location of the at least one neighboring mobile router by storing the address information in the home agent.

A system for recovering a routing path between a first router and at least one mobile node in a mobile network having a nested structure in which the first router manages a first subnet including at least one second router and the at least one second router manages a second subnet including the at least one mobile node, the system comprising:

• a plurality of neighboring routers included in the first subnet;
• and
• a home agent for receiving, from the at least one second router, information of the plurality of neighboring routers included in the first subnet, storing the received neighboring router information, recognizing a routing path failure when a periodic report message is not received from the at least one second router within a preset time, selecting an alternative router from among the plurality of neighboring routers when the routing path failure is recognized, sending a routing path recovery request to the alternative router, and routing data to the at least one mobile node through the alternative router, when the alternative router positively responds to the routing path recovery request,
• wherein the neighboring routers each transmit a tunnel recovery response to the home agent in consideration of a load of processing data traffic, when a tunnel recovery request is received from the home agent.

A system for registering, in a home agent, a location of at least one neighboring mobile router included in a different network, in a mobile network including a first network and a second network, which is different from the first network, each of the first and second networks including a home agent, each of the home agents storing location information of a plurality of mobile routers of the network to which the home agent belongs, the system comprising:

• a home agent;
• and
• a mobile router for receiving a router advertisement message from the at least one neighboring mobile router located in the different network, acquiring address information of the at least one neighboring mobile router included in the router advertisement message, and transmitting the acquired address information to the home agent,
• wherein the home agent registers the location of the at least one neighboring mobile router by receiving and storing the acquired address information.