A method of operation of a radio access node in a cellular communications network to provide Physical Downlink Control Channel, PDCCH, Link Adaptation, LA, by enabling the operation of a PDCCH LA outer loop based on PDCCH transmission status, when serving a wireless device according to a carrier aggregation scheme, comprising: transmitting a plurality of control messages to the wireless device via a corresponding plurality of PDCCHs associated with a corresponding plurality of serving cells of the wireless device, wherein the plurality of serving cells comprises a Primary Cell, PCell, and at least one Secondary Cell, SCell, and wherein the plurality of control messages inform the wireless device of a corresponding plurality of data transmissions to be transmitted to the wireless device; transmitting the plurality of data transmissions to the wireless device via a plurality of Physical Downlink Shared Channels, PDSCHs, of the corresponding plurality of serving cells; concurrently operating a plurality of Physical Uplink Control Channel, PUCCH, receivers on one serving cell of the plurality of serving cells during a Transmit Time Interval, TTI, during which feedback from the wireless device indicative of reception of the plurality of data transmissions is expected, where each PUCCH receiver of the plurality of PUCCH receivers is capable of receiving a different format PUCCH message, when the PCell and at least one SCell are transmitting data; determining the transmission status of each of the plurality of PDCCH transmissions based on decoding results of the plurality of PUCCH receivers; and updating an outer loop LA parameter for each of the plurality of PDCCHs based on the determined PDCCH transmission status, characterised in that the method comprises, for each PDCCH of the plurality of PDCCHs: determining an amount of time that has elapsed since the last update of the PDCCH LA outer loop; and when the amount of time that has elapsed is greater than a predefined threshold, transmitting, using the PDCCH, only one control message to the wireless device to schedule a data transmission on only the serving cell associated with the PDCCH in order to determine the transmission status of the PDCCH and update its outer loop LA parameter. transmitting a plurality of control messages to the wireless device via a corresponding plurality of PDCCHs associated with a corresponding plurality of serving cells of the wireless device, wherein the plurality of serving cells comprises a Primary Cell, PCell, and at least one Secondary Cell, SCell, and wherein the plurality of control messages inform the wireless device of a corresponding plurality of data transmissions to be transmitted to the wireless device; transmitting the plurality of data transmissions to the wireless device via a plurality of Physical Downlink Shared Channels, PDSCHs, of the corresponding plurality of serving cells; concurrently operating a plurality of Physical Uplink Control Channel, PUCCH, receivers on one serving cell of the plurality of serving cells during a Transmit Time Interval, TTI, during which feedback from the wireless device indicative of reception of the plurality of data transmissions is expected, where each PUCCH receiver of the plurality of PUCCH receivers is capable of receiving a different format PUCCH message, when the PCell and at least one SCell are transmitting data; determining the transmission status of each of the plurality of PDCCH transmissions based on decoding results of the plurality of PUCCH receivers; and updating an outer loop LA parameter for each of the plurality of PDCCHs based on the determined PDCCH transmission status, characterised in that the method comprises, for each PDCCH of the plurality of PDCCHs: determining an amount of time that has elapsed since the last update of the PDCCH LA outer loop; and when the amount of time that has elapsed is greater than a predefined threshold, transmitting, using the PDCCH, only one control message to the wireless device to schedule a data transmission on only the serving cell associated with the PDCCH in order to determine the transmission status of the PDCCH and update its outer loop LA parameter. determining an amount of time that has elapsed since the last update of the PDCCH LA outer loop; and when the amount of time that has elapsed is greater than a predefined threshold, transmitting, using the PDCCH, only one control message to the wireless device to schedule a data transmission on only the serving cell associated with the PDCCH in order to determine the transmission status of the PDCCH and update its outer loop LA parameter.