Terminal, base station and communication method

A base station comprising:

• a communication unit configured to perform communication with a terminal in a frequency band aggregated by carrier aggregation;
• a transmission unit configured to transmit a preemption indication for a downlink signal to the terminal;
• and
• a control unit configured to assume that, in a case where scheduling is performed in a unit including a plurality of component carriers in the aggregated frequency band, the preemption indication for the downlink signal is transmitted for each of the plurality of component carriers or for the unit including the plurality of component carriers.

A communication method executed by a terminal, the method comprising steps of:

• performing uplink or downlink communication in a frequency band aggregated by carrier aggregation;
• receiving a preemption indication for a downlink signal in downlink;
• and
• assuming that, in a case where scheduling is performed in a unit including a plurality of component carriers in the aggregated frequency band, the preemption indication for the downlink signal is transmitted for each of the plurality of component carriers or for the unit including the plurality of component carriers.