Patent ID: 7996016

Claim:
A location service system for locating a target mobile terminal, comprising: a client terminal which transmits a location request of the target mobile terminal, and requested accuracy and requested allowable age; a positioning system which produces location information of the target mobile terminal; and a gateway which transmits the location request to said positioning system and stores previously obtained location information of the target mobile terminal and a privacy profile of the target mobile terminal, wherein the gateway performs a first privacy check for verifying the location request by referring to the privacy profile of the target mobile terminal, performs a reusability check to determine if the stored, previously obtained, location information satisfies the requested accuracy and the requested allowable age, and if the reusability check is affirmative, then performs a second privacy check on the stored, previously obtained, location information by referring to information specified in the location request based on the privacy profile of the target mobile terminal, without transmitting the verified location request to the positioning system, in order to decide whether said gateway can transmit the stored, previously obtained, location information to the client terminal.