To provide a simple configuration for a directional antenna device installed at a base station apparatus.

In a wireless communication system equipped with an antenna control server 12, an access pointer 43 and a directional antenna device 21 for conducting wireless communication between multiple POS terminals over a network 100, the antenna device is equipped with a plurality of antenna elements 211, a plurality of weighting device 234 for conducting weighting for reception signals of each antenna element, an adder 235 for adding the received signals weighted by each weighting device, and an interface network card for connecting to a network. The server is equipped with a preliminary weighting calculation function 126 calculating a weighting value and a database 16 for storing a control program to control the beam direction of the antenna. The antenna device downloads the control program and the weighting value from the server, and sets the weighting value to each weighting device based on the control program.