Patent ID: 8131299

Claim:
A location registration area assigning method in a wireless communication system in which a handover process is performed when a mobile device communicating with a base station moves between cells, and a location registration process is performed to notify which cell the mobile device is located in, when an area identifier held by the mobile device is different from an area identifier of a cell received from the base station, the location registration area assigning method comprising: detecting that both the handover process and the location registration process occur between a first cell and a second cell in a previously determined time interval with respect to an arbitrary mobile device; counting the number of times of detection; and changing area identifiers of the first cell and the second cell to a common identifier when counted number of times exceeds a previously determined threshold, and temporally separating an occurrence timing of a handover process of another mobile device between the first cell and the second cell from an occurrence timing of a location registration process of said another mobile device.