TWI745495B

[Problem to be solved]A wireless frame to be transmitted is transmitted within a predetermined time period, avoiding collision with another wireless frame.[Solution]A wireless communication device includes: a transmission unit that transmits a wireless frame; a carrier sense unit that checks whether or not any carrier is being transmitted from another wireless communication device; a transmission time calculating unit that estimates a necessary transmission time taken from start to completion of the transmission of the wireless frame; a time-out time calculating unit that calculates a time-out time from the predetermined time period and the necessary transmission time; a frame transmission determining unit that compares a carrier detection time during which a carrier notified from the carrier sense unit is detected with the time-out time to determine whether to transmit or discard the wireless frame, and notify a control unit of determination result; and the control unit that, based on the determination resul