The communication processor 310 performs beam forming using an array antenna 311 and connects to at least one radio terminal 400, which is also referred to as the first radio terminal, through radio communication with the radio terminal 400. More specifically, the communication processor 310 performs sector level sweep (SLS), which is a beam forming protocol specified with WiGig, and determines which beam pattern 511 (see FIG. 2) is used for the connection with which radio terminal 400.

After that, the communication processor 310 outputs self device information, which indicates which beam pattern 511 is used for the connection with which radio terminal 400 and indicates the quality of the radio communication with the radio terminal 400, to the information sharer 320. The self device information is, in other words, connection information in the communication processor 310, which indicates a situation of the connection with the radio terminal 400 and is also referred to as the second connection information.

The communication processor 310 connects to the communication network 200 using a network-side communicator, not illustrated, and performs data transfer between the radio terminal 400 and the communication network 200 that are connected to each other. That is, the communication processor 310 functions as one of a plurality of access points to the communication network 200 for the radio terminal 400.