Patent ID: 6510318
Filing Date: 2003-01-21
Classification: H04W

Abstract:
A control method in a mobile communications system composed of a control station, a plurality of radio base stations each providing a radio zone, and a plurality of mobile stations, wherein the control station changes combinations of radio zones to form configurations of location registration areas each comprising at least one radio zone, the method comprising:at the control station: storing in a location registration area table a history of changes in the configuration of location registration areas; storing in a location registration acceptance table a zone where a mobile station has made a location registration request and a time instant when the location registration request has been made; and when an incoming call addressed to the mobile station occurs, searching the location registration acceptance table for a current zone of the mobile station, searching the location registration area table for a location registration area of the current zone of the mobile station, and instructing all base stations associated with the location registration area of the current zone of the mobile station to transmit an incoming call notification signal to the mobile station.