A wireless device receives one or more downlink control information (DCI) comprising transmission parameters for a plurality of signals and one or more power control commands. The wireless device calculates a transmission power of each of the plurality of signals employing the one or more power control commands. The wireless device calculates an energy detection threshold based, at least in part, on the transmission power of the plurality of signals. The wireless device performs a listen before talk (LBT) procedure employing the energy detection threshold.