Patent ID: 6415155
Filing Date: 2002-07-02
Classification: G01S,H04W

Abstract:
A location system for identifying the position of a mobile terminal that can communicate based on a plurality of repeaters provided at a plurality of radio zones that forms a communication network, comprising:a plurality of transmitters installed around said mobile terminal configured for sending transmitter identification information that allows identification of each transmitter to said mobile terminal by a wave of a predetermined transmission output, wherein said plurality of transmitters is not connected to said communication network; a received field intensity measurement unit configured to measure received field intensity of signals from said plurality of transmitters at said mobile terminal and to measure received field intensity of signals from said plurality of repeaters at said mobile terminal; and a position identify unit configured for identifying the position of said mobile terminal according to a measured result of received field intensity of said signals from said plurality of transmitters and a measured result of received field intensity of said signals from said plurality of repeaters.