Patent ID: 7519025
Filing Date: 2009-04-14
Classification: H04W

Abstract:
1. A cellular communication system wherein a mobile communication service area is divided into a plurality of location registration areas, the cellular communication system comprising: a mobile router and at least one mobile node, moving in a moving body and in a master-slave relationship, the mobile router performing location update of the mobile node that does not perform the location update, if the mobile node is an a dormant state; a unit for retaining a flag indicating whether the mobile router is in an active state or a dormant state; a unit for inquiring about routing address information of the mobile router in an active state based on a value of the retained flag when paging is performed to at least one of the mobile nodes; and a unit for performing paging to the at least one mobile node, using the obtained routing address information of the mobile router in an active state as a result of the inquiry.