Patent ID: 8462698

Claim:
A method for searching a route of a mobile node in a short-range communication environment, the method comprising the steps of: if a network join request message is transmitted from the mobile node, generating a unique address of the mobile node, and generating a response message including the unique address of the mobile node by a coordinator; transmitting the response message from the coordinator to a first router; acquiring the unique address of the mobile node, for communication with the mobile node by the first router having a group that includes the mobile node; determining whether the mobile node travels during communication; when the mobile node travels, broadcasting the unique address of the mobile node to one or more neighboring routers and determining whether groups of the one or more neighboring routers include the mobile node; and if a second router, which is one of the one or more neighboring routers, has a group that includes the mobile node, performing communication using the unique address without an additional address acquisition process.