A wireless device receives configuration parameters of a primary cell and a secondary cell. The secondary cell may be a scheduling cell for the primary cell. The wireless device may monitor, for scheduling information of the primary cell, search space(s) of the secondary cell based on the secondary cell being activated. The wireless device may receive a DCI via the secondary cell and in response to the monitoring. The DCI may comprise a first field and a second field. A first value of the first field may indicate first scheduling information. A second value of the second field may indicate that the first scheduling information is for scheduling the primary cell. The wireless device may receive or transport a transport block via the primary cell and based on the first scheduling information.