A communication control device comprising: an acquisition unit configured to acquire information about a terminal device that uses one component carrier of a macro cell as a primary component carrier; and a control unit configured to set two or more component carriers of a small cell partially or fully overlapping with the macro cell as additional component carriers to be used additionally by the terminal device, wherein the control unit sets one component carrier among the two or more component carriers of the small cell as a special component carrier on which the terminal device is able to transmit uplink control information on an uplink control channel, and sets a component carrier not set as the special component carrier from among the two or more component carriers of the small cell as a secondary component carrier associated with the special component carrier, the secondary component carrier is a component carrier on which the terminal device is unable to transmit the uplink control information on the uplink control channel, and the uplink control information related to the secondary component carrier is information transmitted on the uplink control channel of the special component carrier; wherein the special component carrier is a component carrier on which a connection establishment procedure is not conducted by the terminal device; if a radio link failure occurs on the special component carrier, the control unit newly sets, as the special component carrier, one component carrier currently set as the secondary component carrier, via a prescribed procedure, the prescribed procedure is a connection reconfiguration procedure or a connection re-establishment procedure for changing the special component carrier. an acquisition unit configured to acquire information about a terminal device that uses one component carrier of a macro cell as a primary component carrier; and a control unit configured to set two or more component carriers of a small cell partially or fully overlapping with the macro cell as additional component carriers to be used additionally by the terminal device, wherein the control unit sets one component carrier among the two or more component carriers of the small cell as a special component carrier on which the terminal device is able to transmit uplink control information on an uplink control channel, and sets a component carrier not set as the special component carrier from among the two or more component carriers of the small cell as a secondary component carrier associated with the special component carrier, the secondary component carrier is a component carrier on which the terminal device is unable to transmit the uplink control information on the uplink control channel, and the uplink control information related to the secondary component carrier is information transmitted on the uplink control channel of the special component carrier; wherein the special component carrier is a component carrier on which a connection establishment procedure is not conducted by the terminal device; if a radio link failure occurs on the special component carrier, the control unit newly sets, as the special component carrier, one component carrier currently set as the secondary component carrier, via a prescribed procedure, the prescribed procedure is a connection reconfiguration procedure or a connection re-establishment procedure for changing the special component carrier.