Patent ID: 7643829

Claim:
A local location manager, comprising: means for updating location information registered with the local location manager, wherein the location updating is in response to a location update request sent by a mobile router moving together with a group of mobile nodes in a master-slave relationship on behalf of the group, local location manager information is registered and stored in a home location manager provided in association with multiple local location managers, and indicates a correspondence relationship of the mobile router and the mobile nodes with the local location manager, and the local location manager is adapted to register location information of the mobile router and the group of mobile nodes when each mobile node sends a location update request to the local location manager nearest to an area where the group of mobile nodes exists so that a time required for location registration is reduced; means for sending a deletion request for deleting location information on the mobile router or the mobile nodes, which has requested registration of location information, to a different local location manager storing the location information on the mobile router and the mobile node; and means for sending an update request for updating local location manager information on the mobile router or the mobile node, to the home location manager storing the local location manager information on the mobile router or the mobile nodes; wherein when the mobile router moves between areas managed by the different local location manager the mobile router sends a location request for updating its own location information to the nearest local location manager.