Wireless communication device detection

1. A wireless communication apparatus, comprising:

wireless communication circuitry configured to transmit a transmission signal and receive a reception signal for communication; and

controlling circuitry configured to communicate with a first wireless communication apparatus through the wireless communication circuitry to determine an identification of the first wireless communication apparatus, and,

wherein the wireless communication circuitry is configured to transmit a control signal including the identification for activation to restart communication with the first wireless communication apparatus after the controlling circuitry fails to detect the first wireless communication apparatus wherein the control signal has a modulation scheme and a packet format that are different from a modulation scheme and a packet format of the transmission signal or the reception signal for communication.

2. The wireless communication apparatus according to claim 1 , wherein the wireless communication circuitry is configured to repetitively transmit the control signal during a predetermined period.

3. The wireless communication apparatus according to claim 2 ,

wherein upon receipt of a predetermined signal from the first wireless communication apparatus in the predetermined period, the wireless communication circuitry is configured to stop transmitting the control signal.

4. The wireless communication apparatus according to claim 1 , wherein the control signal contains information that designates to activate the first wireless communication apparatus as one of a base station or a terminal that is a non-base station.

5. The wireless communication apparatus according to claim 1 , wherein the first wireless communication apparatus is a base station.

6. The wireless communication apparatus according to claim 1 , further comprising at least one antenna.

7. A wireless communication apparatus, comprising:

wireless communication circuitry configured to transmit a transmission signal and receive a reception signal for communication;

a receiver configured to receive a control signal for activation; and

controlling circuitry configured to control the wireless communication circuitry,

wherein the controlling circuitry is configured to communicate with another wireless communication apparatus to determine an identification of the wireless communication apparatus,

wherein the controlling circuitry is configured to set the wireless communication circuitry to a sleep state after the controlling circuitry detects null reception from the other wireless communication apparatus for a predetermined period, and

wherein the controlling circuitry is configured to cancel the sleep state of the wireless communication circuitry after the controlling circuitry detects that the receiver receives the control signal including the identification wherein the control signal has a modulation scheme and a packet format that are different from a modulation scheme and a packet format of the transmission signal or the reception signal for communication.

8. The wireless communication apparatus according to claim 7 ,

wherein the controlling circuitry is configured to set the receiver to the sleep state when the wireless communication circuitry is not in the sleep state, and configured to cancel the sleep state of the receiver when the controlling circuitry sets the wireless communication circuitry to the sleep state.

9. The wireless communication apparatus according to claim 7 ,

wherein the control signal contains instruction information designating that the wireless communication apparatus is activated as one of a base station or a terminal that is a non-base station, and

the controlling circuitry is configured to activate the wireless communication circuitry according to the instruction information.

10. The wireless communication apparatus according to claim 7 ,

wherein the wireless communication apparatus is a base station.

11. The wireless communication apparatus according to claim 7 , further comprising at least one antenna.

12. A wireless communication method at least partially performed by wireless communication circuitry of a wireless communication apparatus, the method comprising: transmitting a transmission signal and receiving a reception signal for communication

communicating with a first wireless communication apparatus through the wireless communication circuitry to determine an identification of the first wireless communication apparatus; and

transmitting a control signal including the identification for activation of the first wireless communication apparatus to restart communication with the first wireless communication apparatus through the wireless communication circuitry after the wireless communication circuitry fails to detect the first wireless communication apparatus wherein the control signal has a modulation scheme and a packet format that are different from a modulation scheme and a packet format of the transmission signal or the reception signal for communication.

13. The wireless communication method according to claim 12 , comprising:

transmitting repetitively the control signal during a predetermined period.

14. The wireless communication method according to claim 13 , comprising:

stopping transmitting the control signal upon receipt of a predetermined signal from the first wireless communication apparatus in the predetermined period.

15. The wireless communication method according to claim 12 ,

wherein the control signal contains information that designates to activate the first wireless communication apparatus as one of a base station or a terminal that is a non-base station.

16. The wireless communication method according to claim 12 ,

wherein the first wireless communication apparatus is a base station.

17. The wireless communication method according to claim 12 , wherein the transmitting of the control signal is carried out via at least one antenna.