A communication control device comprising: a control unit configured to control base stations of one or more small cells which are partly or entirely overlapped by a macrocell and to cause the base stations of the one or more small cells to transmit a signal for a measurement performed by a terminal device with regard to the one or more small cells; a providing unit configured to - decide a timing at which the signal for the measurement is transmitted by each of the base stations of the one or more small cells, wherein the respective timing of a base station is decided based on a time taken for said base station to be activated from an idle state, and - provide information regarding the one or more small cells to the terminal device, said information having the form of a list including information which indicates a frequency channel on which a signal for the measurement is transmitted by each of the base stations of the one or more small cells and information which indicates the decided timings at which the signal for the measurement is transmitted by each of the base stations of the one or more small cells; an acquisition unit (151, 155, 364) configured to acquire a result of the measurement performed by the terminal device; and a selection unit (152, 156) configured to select a base station which is not to be set in the idle state from base stations of the one or more small cells based on the result of the measurement. a control unit configured to control base stations of one or more small cells which are partly or entirely overlapped by a macrocell and to cause the base stations of the one or more small cells to transmit a signal for a measurement performed by a terminal device with regard to the one or more small cells; a providing unit configured to - decide a timing at which the signal for the measurement is transmitted by each of the base stations of the one or more small cells, wherein the respective timing of a base station is decided based on a time taken for said base station to be activated from an idle state, and - provide information regarding the one or more small cells to the terminal device, said information having the form of a list including information which indicates a frequency channel on which a signal for the measurement is transmitted by each of the base stations of the one or more small cells and information which indicates the decided timings at which the signal for the measurement is transmitted by each of the base stations of the one or more small cells; - decide a timing at which the signal for the measurement is transmitted by each of the base stations of the one or more small cells, wherein the respective timing of a base station is decided based on a time taken for said base station to be activated from an idle state, and - provide information regarding the one or more small cells to the terminal device, said information having the form of a list including information which indicates a frequency channel on which a signal for the measurement is transmitted by each of the base stations of the one or more small cells and information which indicates the decided timings at which the signal for the measurement is transmitted by each of the base stations of the one or more small cells; an acquisition unit (151, 155, 364) configured to acquire a result of the measurement performed by the terminal device; and a selection unit (152, 156) configured to select a base station which is not to be set in the idle state from base stations of the one or more small cells based on the result of the measurement.