MOBILE TERMINAL POSITION REGISTRATION SYSTEM FOR MOBILE COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To detect the movement of a mobile terminal while effectively using the band of a radio channel by allowing the mobile station to transfers management information communicated between a base station and the mobile station to the connected mobile terminal and also allowing the mobile terminal to detect the movement of the mobile terminal between networks according to the transferred management information and registering the position at an agent. SOLUTION: When a mobile station 17 and a mobile terminal MN 18 moves from a foreign network 21 to a foreign network 22, the mobile station 17 performs a hand-over operation and informs the MN 18 of the hand-over. The MN 8 sends a position registration message to a foreign agent FA 12 over a speaking channel and the FA 12 transfers it to a foreign agent HA 10. The HA 10 performs position registration so that the MN 18 is able to have a packet communication even in the network 22 at its destination. Messages need not be transmitted periodically and radio channels can effectively be used.