Patent ID: 8374620

Claim:
A frequency allocation method in a wireless base station apparatus communicating wirelessly with a terminal apparatus, the method comprising: dividing a cell that is a communication range of the wireless base station apparatus into six sectors respectively with an outer circle and an inner circle, wherein the outer circle is a range of the cell, and the inner circle is a range at a shorter distance from the wireless base station apparatus than a distance of the outer circle; allocating to a first terminal apparatus positioned in the outer circle of one sector, a frequency different from a frequency allocated to a second terminal apparatus positioned in an adjacent sector of the same cell, and different from a frequency allocated to a third terminal apparatus positioned in the outer circle of an adjacent sector of an adjacent cell; allocating the frequency allocated to the first terminal apparatus to fourth and fifth terminal apparatus positioned in the inner circle of two sectors respectively arranged two sectors away from the sector in which the first terminal apparatus is positioned; and reducing a transmission power to the fourth and fifth terminal apparatus positioned in the inner circle by 5.6 dB from the transmission power to the first terminal apparatus positioned in the outer circle, and transmitting data to the first, or to the fourth and fifth terminal apparatus, wherein the inner circle is divided such that the ratio of the distance from the wireless base station apparatus to the inner circle, to the distance from a wireless base station apparatus of the adjacent cell to the inner circle, is 1.9, when the cell is divided into the outer circle and the inner circle.