Patent ID: 7260406

Claim:
A method for tracking location of subscribers in a dual stack mobile communication network which a synchronous mobile communication network and an asynchronous mobile communication network coexist in, and which includes a dual stack home location register connected to a SS7 network for storing and collectively managing synchronous and asynchronous mobile communication network subscriber information, and a dual stack mobile positioning center connected to the dual stack home location register through the SS7 network for receiving a location tracking request for a synchronous or asynchronous mobile communication terminal from a location tracking request system, searching roaming information for the terminal from dual stack home location register, requesting location tracking for the terminal to a mobile switching center which the terminal roams, and transmitting the location information of the terminal to the location tracking request system, the synchronous and asynchronous mobile communication networks respectively including a position determination entity, comprising the steps of: in accordance with that the location tracking request system requests the dual stack mobile positioning center to track the location of the asynchronous mobile communication terminal by using a GPS satellite and receiver by transmitting a number of the terminal, confirming a dialing number of the terminal at the dual stack mobile positioning center, and requesting location information of the terminal to the dual stack home location register; extracting the location information of the terminal at the dual stack home location register, and transmitting the information to the dual stack mobile positioning center, wherein the location information of the terminal extracted at the dual stack home location register comprises a subscriber identifier, subscriber number information, and a node number of a network which the terminal belongs to; when the dual stack mobile positioning center confirms the mobile switching center which the terminal roams and thus confirms that the terminal belongs to the asynchronous mobile communication network mobile switching center, requesting location tracking for the subscriber to the corresponding asynchronous mobile switching center; requesting the location information of the terminal to a serving mobile location center at the asynchronous mobile switching center; when a GPS receiver has been mounted on the terminal, at the serving mobile location center determining location tracking values of the terminal by interworking with the terminal; receiving the location information of the terminal at the mobile switching center from the serving mobile location center, and transmitting the location information to the dual stack mobile positioning center; and transmitting the location information of the terminal from the dual stack mobile positioning center to the location tracking request system.