Radio communication device, radio communication system, radio communication method, and program for executing radio communication method

A radio communication method for use in a radio communication system including a radio communication device which transmits a beacon signal intermittently as a master radio terminal, and a radio communication device which receives the beacon signal intermittently as a slave radio terminal, said method being characterized by comprising the steps of:

• transmitting a first beacon signal in a preset timing pattern P1 from the master radio terminal;
• attempting to receive the first beacon signal in a preset timing pattern P2 in the slave radio terminal;
• transmitting the second beacon signal from the master radio terminal, upon a passage of a delay time period R which is shorter than a standby time period Q which is shorter than the timing pattern P1, after the standby time period Q has passed;
• and
• attempting to receive in the slave radio terminal the second beacon signal according to a passage of the delay time period R which is shorter than the standby time period Q which is shorter than the timing pattern P2, after the standby time period Q has passed.

A program described in a format which is readable by a computer incorporated in each of radio communication devices included in a radio communication system, the radio communication devices being a radio communication device which transmits a beacon signal as a master radio terminal, and a radio communication device which receives the beacon signal as a slave radio terminal, the program being executed on the computer such that transmission or reception of the beacon signal is performed;

• characterized in that:
• the radio communication device is configured to transmit or receive a first beacon signal and a second beacon signal intermittently, as the beacon signal;
• when the radio communication device is the master radio terminal, the computer executing the steps of:
• transmitting the first beacon signal in a preset timing pattern P1;
• and transmitting the second beacon signal upon a passage of a delay time period R which is shorter than a standby time period Q which is shorter than the timing pattern P1, after the standby time period Q has passed;
• and when the radio communication device is the slave radio terminal, the computer executing the steps of:
• attempting to receive the first beacon signal in a preset timing pattern P2;
• and attempting to receive the second beacon signal according to a passage of the delay time period R which is shorter than the standby time period Q which is shorter than the timing pattern P2, after the standby time period Q has passed.