A wireless device may receive one or more configuration parameters of a first cell and a second cell. The one or more configuration parameters may indicate a first bandwidth part (BWP), of the first cell, and a second BWP, of the second cell, linked to the first BWP. The wireless device may activate the first BWP of the first cell as an active BWP of the first cell. Based on the first BWP being linked to the second BWP, the wireless device may activate the second BWP as an active BWP of the second cell.