A network node (600), a wireless device (602) and methods for controlling a radio communication using carrier aggregation. The wireless device (602) sends (6:1) UE capabilities to the network node (600), indicating a maximum capability limit per component carrier and a total maximum capability limit across all component carriers to be used in the radio communication. The network node (600) further selects (6:2) a number of component carriers to be used by the wireless device, and configures (6:3) radio features on the selected component carriers based on the received UE capabilities. The network node (600) then signals (6:4) the selected number of component carriers and the configured radio features to the wireless device (602) for use in the radio communication (6:5). Thereby, the network node (600) can utilize the full capabilities of the wireless device (602) when configuring the radio features while still respecting both the maximum capability limit per carrier and the total maximum capability limit.