A method performed by a radio node for communicating with a wireless device in a wireless communication system, the wireless device being configured with cells on at least two component carriers, CCs, available to the wireless communication system for communication with the wireless device, the method comprising: - associating each one of the at least two CCs with a respective different group of CCs; and - transmitting control information to the wireless device indicating a CC group, wherein the transmitted control information applies to at least one CC, which at least one CC is at least one of those CCs, out of the at least two CCs, that are associated with the indicated CC group, - wherein the control information comprises scheduling information in form of a first resource assignment and wherein feedback information on a decoding result is indicated for the indicated CC group such that Acknowledged, ACK, indicates successful decoding on all of the CCs comprised in the indicated CC group and Non-acknowledged, NACK, indicates unsuccessful decoding on one or more of the CCs comprised in the indicated CC group, - the method CHARACTERIZED IN THAT the first resource assignment applies: - equally to each one of the CCs comprised in the indicated CC group, such that a same amount of resources are comprised in respective sets of scheduled resources for the CCs comprised in the indicated CC group; or - to one or more of the CCs comprised in the indicated CC group, and wherein a pre-configured set of scheduled resources applies for remaining CCs comprised in the indicated CC group; or - to one or more of the CCs comprised in the indicated CC group, and wherein a second resource assignment applies to remaining CCs comprised in the indicated CC group. - associating each one of the at least two CCs with a respective different group of CCs; and - transmitting control information to the wireless device indicating a CC group, wherein the transmitted control information applies to at least one CC, which at least one CC is at least one of those CCs, out of the at least two CCs, that are associated with the indicated CC group, - wherein the control information comprises scheduling information in form of a first resource assignment and wherein feedback information on a decoding result is indicated for the indicated CC group such that Acknowledged, ACK, indicates successful decoding on all of the CCs comprised in the indicated CC group and Non-acknowledged, NACK, indicates unsuccessful decoding on one or more of the CCs comprised in the indicated CC group, - the method CHARACTERIZED IN THAT the first resource assignment applies: - equally to each one of the CCs comprised in the indicated CC group, such that a same amount of resources are comprised in respective sets of scheduled resources for the CCs comprised in the indicated CC group; or - to one or more of the CCs comprised in the indicated CC group, and wherein a pre-configured set of scheduled resources applies for remaining CCs comprised in the indicated CC group; or - to one or more of the CCs comprised in the indicated CC group, and wherein a second resource assignment applies to remaining CCs comprised in the indicated CC group.