| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless communication device capable of establishing wireless connection with a master unit, while enhancing security without increasing the device cost, and to provide a communication system and a communication method.SOLUTION: A wireless communication device includes first reception means for outputting a reception level signal corresponding to the power of a predetermined signal received from a communication apparatus, transmission means for transmitting a connection request signal to the communication apparatus, when the reception level signal goes above a predetermined threshold, and second reception means for receiving the connection setting information sent from the communication apparatus in response to the connection request signal. |
