Patent ID: 6400955
Filing Date: 2002-06-04
Classification: H04W

Abstract:
A radio communication system with a directional antenna provided in each base station and a means for setting a direction of the antenna for each communication slot, said radio communication system repeatedly using radio waves at the same frequency;where a plurality of direction-determining patterns are prepared in each base station; a base station selects a first direction-determining pattern among the plurality of direction-determining patterns; each base station adjacent to said base station selects a direction-determining pattern different from said first direction-determining pattern; each remote base station repeatedly uses-said first direction-determining pattern, whereby the adjacent base stations avoid using the same antenna direction at the same time; and a base station has a means for selecting a directivity segregation number as a natural number smaller than the number of directivity segregation, each of base stations adjacent to the base station has a means for selecting a directivity segregation number different from the first directivity segregation number, and each of remote base stations can repeatedly select the first directivity segregation number.