Wireless communications using multiple active resources (e.g., bandwidth parts (BWP)) are described. At least one of multiple active resources (e.g., BWPs) of a first cell may be selected to send scheduling information (e.g., cross-carrier scheduling information) for other cells. A base station may send downlink control information (DCI) for scheduling (e.g., cross-carrier scheduling) a second cell using the selected BWP. A wireless device may monitor a physical downlink control channel (PDCCH) of the selected BWP to detect the DCI for scheduling (e.g., cross-carrier scheduling) the second cell.