ROAMING MOBILE COMMUNICATION SYSTEM AND ITS METHOD

摘要

A roaming mobile communication system in which a roaming incoming call to a moving subscriber can be connected to a mobile communication network adopting a different roaming number assigning system. In order to connect an incoming call to a moving subscriber, the mobile communication system connects a first mobile communication network to a second mobile communication network through an interwork location register. The first mobile communication network is the network to which the in-area location register of the in-area network, where the moving subscriber exists when the incoming call is connected to the moving subscriber, allocates temporarily a roaming number. The second mobile communication network is the network to which the gate location register of the in-area network, where the moving subscriber exists when the location of the moving subscriber is registered, allocates temporarily a roaming number. The interwork location register is used for registering the location of the moving subscriber who is roaming and for allocating the roaming number when the incoming call is connected.