PARENT MOBILE DEVICE, CHILD MOBILE DEVICE, HOME LOCATION REGISTER DEVICE, AND MOBILE SWITCHING CENTER

摘要

Concentrated use of wireless resources by location registrations carried out by slave mobile stations all together when a plurality of slave mobile stations present in a moving body provided with a master mobile station while bridging adjacent location registration areas is prevented. For this purpose, a mobile communications system 1 comprises: at least a broadcast information transmitting function unit (21) for notifying to the slave mobile stations (3) that the slave mobile stations are slaved to the master mobile station (2), a link maintaining function unit (31) for holding master-slave relationships, home location registers (5, 6) provided with expansion areas (52, 62) for holding the mobile station link information, and a mobile station link information forwarding function unit (41) for forwarding the address information of the master mobile station (2).