| 摘要 |
The purpose of the present invention is to suitably perform uplink communication in an unlicensed band, in a wireless communication system (LAA) which operates LTE in the unlicensed band. The present invention is provided with: a control unit which executes listen before talk (LBT), and controls transmission of an uplink signal in a first frequency carrier; and a transmission/reception unit which receives, from a wireless base station, a downlink signal transmitted in the first frequency carrier. The control unit implements control such that, in cases when LBT is executed at an OFDM symbol timing in a subframe of the first frequency carrier, the reception power during an LBT period is equal to or less than a prescribed threshold value, and the downlink signal is not detected, it is detected that the subframe is not being used to transmit the downlink signal, and the subframe is used to transmit the uplink signal. |
