Patent ID: 9191972
Filing Date: 2015-11-17
Classification: H04W

Abstract:
1. A transmitting device comprising: a transmitter configured to transmit a frame; a first carrier sensor configured to perform carrier sense to detect interference which affects reception of the frame at a receiving device, the carrier sense being performed in a wider bandwidth than a signal bandwidth to be used for a transmission of the frame by the transmitter; and an idle detector configured to determine whether idle detection by the first carrier sensor succeeds, wherein the idle detector determines that the idle detection succeeds if the first carrier sensor continuously detects an idle state for a first period that is equal to or more than a duration of a frame length of the frame to be transmitted by the transmitter, the idle state being detected if the first carrier sensor does not detect interference, wherein the transmitter is configured to, if the idle detector determines that the idle detection succeeds, start the transmission of the frame at a timing immediately after a lapse of a second period which begins immediately after a lapse of the first period during which the idle state is continuously detected, and wherein the second period is calculated by subtracting the duration of the frame length of the frame to be transmitted by the transmitter from a period of an interference wave.