Patent ID: 7257416

Claim:
A mobile location based service system for providing cell based and GPS based location based services, comprising: an application server for receiving a location based service request, requesting location information of a mobile station, and providing the location based service according to a received location information; and a location information providing system for providing location of the mobile station by selectively using one of a cell based positioning method and a GPS based positioning method based upon a service supported by the mobile station and a mobile switching center to which the mobile station belongs in response to the request from the application server, wherein the location information providing system comprises: a mobile positioning center for transmitting a SMS request message to a home location register on the basis of an identification number of the mobile station according to the location information service request, discriminating a kind of location information service supported by the mobile station and the mobile switching center by analyzing a parameter of a SMS request result message received from the home location register, acquiring and transmitting the location information of the mobile station based on the kind of location information service in response to the request from the application server; a positioning determination entity for determining location of the mobile station through the mobile switching center under the control of the mobile positioning center, and transmitting the location of the mobile station to the mobile positioning center when the GPS based service is supported by the mobile switching center and the mobile station; and a home location register for transmitting the location information of the mobile switching center, which the mobile station belongs to, to the mobile positioning center when the mobile station and the mobile switching center do not support a GPS function.