Communication device and communication method

A communication method comprising:

• a first signal-processing step of generating a first signal;
• a second signal-processing step of generating a second signal including information regarding the first signal;
• and
• a communication step of simultaneously transmitting the first and second signals.

A communication device comprising:

• a communication unit configured to transmit and receive a wireless signal at one of a plurality of frequency channels;
• a control unit configured to control switching of a channel to be transmitted and received by the communication unit;
• a second processing unit configured to process a second signal received from another communication device and acquire information regarding a usage channel of the other communication device;
• and
• a first processing unit configured to process a first signal received from the other communication device and acquire information regarding the other communication device, wherein
• the control unit performs standby of the first signal at the usage channel specified based on the second signal.

A communication method comprising:

• processing a second signal received from another communication device and acquiring information regarding a usage channel of the other communication device;
• performing standby of a first signal at the usage channel specified based on the second signal;
• and
• processing the first signal received from the other communication device and acquiring information regarding the other communication device.