The present disclosure relates to one or more techniques for enabling component carriers for multi-carrier wireless communication. A capability of a UE or base station to support more than five downlink component carriers may be identified and indicated. A multi-carrier configuration, which may include more than five component carriers may be received. The multi-carrier configuration may include a first group of component carriers and a second group of component carriers. A first physical uplink control channel (PUCCH), a second PUCCH, or a combination of the first PUCCH and the second PUCCH, may be transmitted. The first PUCCH may be associated with the plurality of downlink component carriers of the first group, and the second PUCCH may be associated with the at least one downlink component carrier of the second group.