A REGISTRATION METHOD IN A CELLULAR MOBILE RADIO SYSTEM

摘要

The present invention relates to a method of registering a mobile station in a cellular mobile radio system in which cells or service areas, each including a plurality of cells, form registration areas. Each registration area has its own identity. According to the proposed method, individual location areas are formed for one or more mobile stations with the intention of avoiding an unnecessarily high number of registrations in border areas of the different registration areas. A location area may have the form of a list which is stored in a mobile station, or may be stored in the system and transmitted to the mobile station via a base station in a given registration area, in conjunction with registration of the mobile station in this area. A new registration made only if the mobile station enters a service area that belongs to a registration area whose identity is not found on the stored listed identities.