A base station transmits configuration parameters of a plurality of cells to a wireless device. The plurality of cells comprise: a primary cell with a primary physical uplink control channel (PUCCH); and a PUCCH secondary cell with a secondary PUCCH; a transmit power control (TPC) radio network temporary identifier (RNTI); a primary TPC index for the primary PUCCH; and a secondary TPC index for the secondary PUCCH. An activation control element indicating activation of the PUCCH secondary cell is transmitted. A downlink control information (DCI) associated with the TPC RNTI is transmitted via a common search space of the primary cell. The DCI comprises an array of TPC commands. The secondary TPC index determines a TPC command in the array. An uplink signal with an uplink signal transmission power determined based on the TPC command is received from the wireless device and via the secondary PUCCH.