US Patent 7782769 Access control device, wireless device, and network

An access control device is provided to a wireless device of a network which is constituted with a plurality of wireless devices connecting with one or a plurality of wireless terminals. The access control device includes: a connection severance terminal selection section which, when a bandwidth employed by a wireless communications section exceeds a threshold, selects a terminal whose connection is to be cut off from among the wireless terminals; a connection severance declaration section which, sends a connection severance declaration message to the other wireless terminals, including information about the connection severance terminal; and a forcible severance instruction section which verifies reception, of a message of declaration of acceptance of the connection severance terminal, and causes a forcible severance instruction message for the connection severance terminal. Accordingly, connection points of the wireless terminals can be efficiently changed in order to assure communication quality at the wireless devices.