Wireless device

The server performing wire communication with a plurality of wireless devices, comprising:

• a receiving module receiving, from the wireless devices transmitting and receiving information with a plurality of user devices by use of a plurality of channels, a receiving sensitivity of each channel, notification purporting that the information transmitted and received by the user devices is non-realtime system data or realtime system data, and the number of the user devices performing wireless communication with the user devices by use of the channels;
• a calculating module calculating a predetermined value from the receiving sensitivity of each channel;
• a channel determination module, when receiving notification purporting that the information transmitted and received by the user devices is non-realtime system data, determining the first channel information on the basis of a predetermined conditional expression from the number of user devices and the predetermined value;
• and
• a transmitting module transmitting the thus-determined first channel information to the wireless devices.

The control method of a wireless device performing wireless communication with a plurality of user devices and performing wire communication with a server, comprising:

• a wireless communication step of performing wireless communication with the user devices by use of a plurality of channels;
• a judging step of judging whether information transmitted and received by the user devices is non-realtime system data or realtime system data;
• a receiving sensitivity acquisition step of acquiring a receiving sensitivity of each channel;
• a transmitting step of transmitting, to the server, the number of user devices performing the wireless communication by use of the channels, a notification that the information transmitted and received by the user devices is the non-realtime system data or a notification that the information transmitted and received by the user devices is the realtime system data, and the receiving sensitivity of each channel;
• and
• a receiving step of receiving, when transmitting to the server the notification that the information transmitted and received by the user devices is the non-realtime system data, a first channel information sent by the server, and receiving, when transmitting to the server the notification that the information transmitted and received by the user devices is the realtime system data, a second channel information sent by the server.