MOBILE COMMUNICATION SYSTEM, MOBILE COMMUNICATION TERMINAL USED FOR THE MOBILE COMMUNICATION SYSTEM, PROCESSOR USED FOR THE MOBILE COMMUNICATION SYSTEM AND POSITION REGISTRATION METHOD FOR THE MOBILE COMMUNICATION TERMINAL

摘要

PROBLEM TO BE SOLVED: To provide the mobile communication system where an optimum position registration area is set to each mobile communication terminal. SOLUTION: Mobile communication terminals 100a-100c stores resident radio zone history information, sends the information to a processor 800 of a network 700 for each prescribed time, the processor 800 obtains a logical position registration area for each of the mobile communication terminals 100a-100c based on the information and this logical position registration area is set to each of the mobile communication terminals 100a-100c as the logical position registration area. Thus, frequency of occurrence of position registration in each of the mobile communication terminals 100a-100c is reduced.