A method and apparatus are described for transmitting and receiving uplink control information. A base station transmits allocation information to a user equipment. The allocation information allocates a plurality of physical uplink control channel (PUCCH) transmission resources, which include a plurality of reference signal (RS) resources, to the user equipment. Each of the PUCCH transmission resources is configured by a combination of an information resource and a reference signal (RS) resource. Positive acknowledgement/negative acknowledgement (ACK/NACK) information, an RS and additional control information are received by the base station from the user equipment through a specific information resource and a specific RS resource among the plurality of PUCCH transmission resources. A state of the additional control information is indicated based on a selection made by the user equipment of the specific RS resource to which the RS is transmitted, among the plurality of RS resources.