Patent ID: 6731955
Filing Date: 2004-05-04
Classification: G01S,H04B,H04W

Abstract:
A radio communication system comprising a reference station which transmits an azimuth designation signal having directivity toward a predetermined reference azimuth, and a plurality of terminal stations which can receive said azimuth designation signal transmitted from said reference station, whereina target terminal station, included in said plurality of terminal stations, comprises receiving means which receives the azimuth designation signal transmitted from the reference station, arrival direction obtaining means which obtains an arrival direction of the azimuth designation signal received by said receiving means, azimuth designation signal generating means which generates a new azimuth designation signal having directivity in the direction opposite to the arrival direction of the azimuth designation signal obtained by said arrival direction obtaining means, and transmitting means which allows the azimuth designation signal generated by said azimuth designation signal generating means to have directivity in a direction designated by the azimuth designation signal and then transmits the signal.