VARIABLE POSITION REGISTRATION SYSTEM

PURPOSE:To realize the variable position registration system for the mobile communication deciding the optimum position registration area for each mobile terminal by increasing the position registration area to a mobile terminal equipment moving frequently with less arrival of call and decreasing the position registration area to a mobile terminal equipment less moving with much arrival of call. CONSTITUTION:Position registration data and simultaneous call data are stored in a database 111, the position registration mode is set to the position registration data and the simultaneous call data are stored in the simultaneous call area corresponding to the position registration mode. A control station 110 measures the frequency of position registration and the frequency of the arrival of call for each of mobile terminal equipments 101-103 and the optimum position registration area for each mobile terminal equipment is decided corresponding to the absence or frequent occurrence of the arrival of call based on the simultaneous call area of the simultaneous call data and the position registration mode of the position registration data of the database 111 so as to reduce the ineffective use of the radio channel and the ineffective traffic in the control station 110.