Patent ID: 6952581
Filing Date: 2005-10-04
Classification: H04W

Abstract:
1. A location registration control method, comprising the steps of: broadcasting by a mobile communication network in a plurality of types of location areas, area identification information on said plurality of types of location areas, with each location area being included in one of a plurality of types of location area groups overlaying a communication service area, and each location area group being obtained by sectioning said communication service area into location areas by using one of a plurality of types of section patterns; receiving at a communication terminal located within said communication service area, said area identification information on said plurality of types of location areas corresponding to a location of said terminal; recording, at said communication terminal, a current time at which said area identification information is received; selecting at said communication terminal on the basis of said received area identification information on said plurality of types of location areas, a location area identification corresponding to a section pattern predetermined for use with said communication terminal, a plurality of types of section pattern being designated corresponding to a plurality of different time zones for said communication terminal, said selecting step includes obtaining at said communication terminal section information designating a section pattern corresponding to said recorded current time, on the basis of said section information designating section patterns, so as to select a location area identification corresponding to said section information designating a section pattern; and transmitting from said communication terminal to said mobile communication network, when a change in location of said communication terminal is indicated by a change in said location area identification selected in said terminal, a request for registration of said location change of said communication terminal in said network.