A wireless communication system for transmitting and receiving a radio signal by a radio wave between multiple wireless stations, each of the wireless stations comprising: a wireless transmission/reception unit configured to transmit and receive the radio signal; a radio level measuring unit configured to measure a received signal strength of the radio signal received by the wireless transmission/reception unit; a timer configured to output a start-up signal whenever a predetermined intermittent reception time is lapsed; and an operation controller configured to analyze the reception signal received by the wireless transmission/reception unit to obtain information related to the wireless transmission/reception unit itself, wherein the wireless transmission/reception unit is configured to autonomously execute an operation of receiving the radio signal based on an operation command set by the operation controller, and the radio level measuring unit is configured to autonomously execute an operation of measuring the received signal strength of the radio signal received by the wireless transmission/reception unit based on an operation command set by the operation controller, wherein when the operation controller in a sleep state is activated by the start-up signal from the timer, the operation controller is configured to set an operation command in the wireless transmission/reception unit and the radio level measuring unit and the operation controller is configured to shift to the sleep state until the measuring of the received signal strength by the radio level measuring is completed, and wherein, when the measurement result of the received signal strength by the radio level measuring unit is equal to or greater than a predetermined reference value, the wireless transmission/reception unit is configured to continuously perform a reception operation and the operation controller analyzes the reception signal; and, when the measurement result is smaller than the reference value, the wireless transmission/reception unit is configured to stop the reception operation. a wireless transmission/reception unit configured to transmit and receive the radio signal; a radio level measuring unit configured to measure a received signal strength of the radio signal received by the wireless transmission/reception unit; a timer configured to output a start-up signal whenever a predetermined intermittent reception time is lapsed; and an operation controller configured to analyze the reception signal received by the wireless transmission/reception unit to obtain information related to the wireless transmission/reception unit itself, wherein the wireless transmission/reception unit is configured to autonomously execute an operation of receiving the radio signal based on an operation command set by the operation controller, and the radio level measuring unit is configured to autonomously execute an operation of measuring the received signal strength of the radio signal received by the wireless transmission/reception unit based on an operation command set by the operation controller, wherein when the operation controller in a sleep state is activated by the start-up signal from the timer, the operation controller is configured to set an operation command in the wireless transmission/reception unit and the radio level measuring unit and the operation controller is configured to shift to the sleep state until the measuring of the received signal strength by the radio level measuring is completed, and wherein, when the measurement result of the received signal strength by the radio level measuring unit is equal to or greater than a predetermined reference value, the wireless transmission/reception unit is configured to continuously perform a reception operation and the operation controller analyzes the reception signal; and, when the measurement result is smaller than the reference value, the wireless transmission/reception unit is configured to stop the reception operation.