| 摘要 |
PURPOSE:To build up a cellar system of sector constitution with less interference quantity by arranging an interference station closer in a direction where an antenna gain is small. CONSTITUTION:A same frequency channel is arranged to a sector covered by a directional antenna of a radio base station whose maximum radiation is 0 deg. with respect to a positive direction of the x axis in which the orthogonal coordinate is given as (3<1/2>RnK, 3Rj/2) (j is an even number), where a prescribed natural number (n), optional integral numbers j,k and a prescribed real number R and to a sector covered by a directional antenna of a radio base station whose maximum radiation is 180 deg. with respect to a positive direction of the x axis in which the orthogonal coordinate is given as (3<1/2>R(2nk-3)/2,3Rj/2) (j is an odd number). Thus, the interference station is parted in a direction with a large antenna gain and closer in a direction with a small antenna gain, the directivity of a base station antenna is utilized sufficiently to build up a cellar system with less interference quantity. |
