Patent ID: 8792394

Claim:
A first wireless communication apparatus comprising: a receiving unit configured to receive a response request signal; a transmitting unit configured to transmit a response signal in response to the response request signal; a measuring unit configured to continuously measure received power of the response request signal received by the receiving unit; and a communication control unit configured to cause the transmitting unit to transmit the response signal to a second wireless communication apparatus that has transmitted the response request signal if the received power of the response request signal is higher than a threshold value, wherein in the case where the receiving unit receives the response request signal from each of a plurality of second wireless communication apparatuses, if the received power of the response request signal transmitted from one of the plurality of second wireless communication apparatuses is higher than a threshold value and a difference between the received power of the response request signal and the received power of each of the response request signals transmitted from other plurality of second wireless communication apparatuses is larger than a setting value, the communication control unit causes the transmitting unit to transmit the response signal to the one of the plurality second wireless communication apparatuses, wherein the communication control unit further causes the transmitting unit to transmit the response signal after the received power of the response request signal has fallen below the threshold value, wherein if the received power of the response request signal is on the increase and exceeds the threshold value and if the received power of the response request signal is on the decrease and falls below the threshold value, the communication control unit causes the transmitting unit to transmit the response signal, wherein the first wireless communication apparatus further comprises: a notifying unit; wherein the communication control unit controls communication for establishing a connection with the second wireless communication apparatus that has transmitted the response request signal after the transmitting unit has transmitted the response signal, and wherein when the establishment of a connection performed by the communication control unit is completed, the notifying unit notifies the establishment of communication.