Patent ID: 8050719

Claim:
A radio communication system comprising: a plurality of transmitting stations and at least one transmitting/receiving station both arranged in a given area, wherein each of said plurality of transmitting stations comprises a transmitting section for transmitting an azimuth designation signal having directivity in a direction determined in accordance with a position within said area, and said transmitting/receiving station comprises a receiving section that receives said azimuth designation signal(s) when said azimuth designation signal(s) transmitted from one or more of said plurality of transmitting stations is/are receivable and/or when said azimuth designation signal(s) transmitted from said transmitting/receiving station(s) other than said transmitting/receiving station, in which said receiving section is included, is/are receivable; an arrival direction obtaining section that obtains an arrival direction of said azimuth designation signal(s) received by said receiving section; a received power measuring unit that respectively measures received power of said plurality of azimuth designation signals received; a vector generating section that generates a vector having magnitude of said received power and direction of said arrival direction on the basis of said received power and said arrival direction; a combined vector generating section that generates a combined vector by combining said vectors respectively generated for said received azimuth designation signals; an azimuth designation signal generating section that generates a new azimuth designation signal on the basis of the magnitude and the direction of said combined vector, by determining the direction of said combined vector as an arrival direction of an azimuth designation signal and by obtaining directional information on the basis of this arrival direction; and a transmitting section that transmits said new azimuth designation signal generated by said azimuth designation signal generating section with directivity in a direction of said combined vector or in a direction having a predetermined angle with said combined vector.