Patent ID: 8150413

Claim:
A radio network designing apparatus for designing a radio network that covers a plurality of cells through ratio waves from base stations, comprising: an objective function extractor for setting up an optimizing condition that at least includes an objective function that has a radio parameter of said base station as the objective function parameter and that is used for an optimization process carried out by a computer to balance traffic loads between a plurality of cells, by using cell balance values between a target cell whose characteristic changes by modification of the parameter and multiple neighboring cells existing around the target cell; and an optimizer for performing an optimization process in accordance with said optimizing condition set by said objective function extractor to determine the value of said parameter to be the solution, wherein said objective function extractor sets up the objective function showing a degradation ratio of an important area and a constraint condition in which satisfying a predetermined relationship with a target value means better balance between the cells, as said optimizing condition; the degradation ratio in the important area being lower than that in the other areas, and wherein said optimizer performs optimization so as to reduce the value of said objective function by modifying said parameter within a range in which said constraint condition satisfies said predetermined relationship with said target value, and wherein said constraint condition is the cell balance values between said target cell and neighboring cells.