Patent ID: 8180355

Claim:
A base station device forming a cell, comprising: a plurality of directional antennas; a power control unit controlling respectively transmission power of signals transmitted from said directional antennas; a frequency management unit managing frequency bands used in the cell, and a notifying unit notifying each of sector cells of a base cell and a small-cell of control information in which the priority of the small-cell is set higher than the priority of the base cell, wherein the cell is formed with layers of the base cell having a cell border with a cell formed by a neighboring base station device and including a plurality of sector cells and the small-cell having a cell radius smaller than a cell radius of the base cell and including at least four sector cells, by said plurality of directional antennas and said power control unit, and said frequency management unit manages frequency bands so that frequency bands different from each other are allocated to the sector cells of the base cell, and a frequency band, which is different from the frequency bands allocated to the base cell and different between neighboring sector cells but the same between at least two sector cells, is allocated to each of the sector cells of the small-cell.