A base station capable of reducing subframe overhead and improving throughput is provided. A base station (10) communicates with terminals (20-0 to 20-3). The base station (10) includes: a controller (12) configured to set, in a variable manner, for each subframe, a cyclic prefix length of a cyclic prefix part to be inserted into the subframe; and a communication unit (11) configured to transmit identification information for identifying the cyclic prefix length set in the subframe by the controller (12) to a terminal to which the subframe has been allocated.