A base station comprising: a communication unit configured to perform radio communication; and a control unit configured to set control information for adjusting a symbol interval in a complex symbol sequence into which a bit sequence is converted, on a basis of a predetermined condition, and perform control such that the control information is transmitted from the communication unit to a terminal, the control information being set such that the symbol interval in the complex symbol sequence being set within a range that does not exceed a symbol length of the complex symbol sequence, characterized in that the control unit is configured to - set the control information such that data to be transmitted via a frequency channel having higher frequency among a plurality of frequency channels for transmitting the data to the terminal has the narrower symbol interval of the complex symbol sequence, and/or - allocate a radio resource to the terminal that uses a plurality of component carriers to perform communication by carrier aggregation, and set the control information such that data to be transmitted via a component carrier of higher priority among the plurality of component carriers has the wider symbol interval of the complex symbol sequence, and/or - set the control information such that data to be transmitted via a second control channel for transmitting or receiving live data among a first control channel for transmitting or receiving information for controlling communication with the terminal and the second control channel has the narrower symbol interval of the complex symbol sequence. a communication unit configured to perform radio communication; and a control unit configured to set control information for adjusting a symbol interval in a complex symbol sequence into which a bit sequence is converted, on a basis of a predetermined condition, and perform control such that the control information is transmitted from the communication unit to a terminal, the control information being set such that the symbol interval in the complex symbol sequence being set within a range that does not exceed a symbol length of the complex symbol sequence, characterized in that the control unit is configured to - set the control information such that data to be transmitted via a frequency channel having higher frequency among a plurality of frequency channels for transmitting the data to the terminal has the narrower symbol interval of the complex symbol sequence, and/or - allocate a radio resource to the terminal that uses a plurality of component carriers to perform communication by carrier aggregation, and set the control information such that data to be transmitted via a component carrier of higher priority among the plurality of component carriers has the wider symbol interval of the complex symbol sequence, and/or - set the control information such that data to be transmitted via a second control channel for transmitting or receiving live data among a first control channel for transmitting or receiving information for controlling communication with the terminal and the second control channel has the narrower symbol interval of the complex symbol sequence. - set the control information such that data to be transmitted via a frequency channel having higher frequency among a plurality of frequency channels for transmitting the data to the terminal has the narrower symbol interval of the complex symbol sequence, and/or - allocate a radio resource to the terminal that uses a plurality of component carriers to perform communication by carrier aggregation, and set the control information such that data to be transmitted via a component carrier of higher priority among the plurality of component carriers has the wider symbol interval of the complex symbol sequence, and/or - set the control information such that data to be transmitted via a second control channel for transmitting or receiving live data among a first control channel for transmitting or receiving information for controlling communication with the terminal and the second control channel has the narrower symbol interval of the complex symbol sequence.