An antenna site equipped with reconfigurable antennas in a communication network and having capacity to serve communication traffic in a respective area of competence is configured by partitioning the area the area of competence into a set of cells. The number of cells in the set is optimized by ensuring that the traffic is evenly distributed among the cells. This result is preferably achieved starting from a reference set of cells by locating: —i) areas of superposition between adjacent cells covered jointly by traffic capacity of adjacent cells in the reference set of cells, and—ii) uncovered areas between adjacent cells, that is, areas not covered by traffic capacity of any cells in the reference set of cells. The areas of superposition are removed and the traffic capacity thus made available is assigned to the uncovered areas. If any uncovered areas remain, the number of cells in the reference set of cells is increased and the process repeated. If no uncovered areas between adjacent cells are located, the possibility exists of decreasing the number of cells in the reference set of cells and the process is repeated to check whether the area of competence can be properly covered with a lower number of cells.