US Patent 10165592 Scheduling request resource selection

A plurality of cells comprise a primary cell with a primary physical uplink control channel (PUCCH) and a PUCCH secondary cell with a secondary PUCCH. The wireless device transmits a scheduling request on one valid PUCCH resource for a scheduling request resource in a subframe. The wireless device selects one of the primary PUCCH and the secondary PUCCH as the one valid PUCCH resource for transmitting the scheduling request in the subframe when the wireless device has more than the one valid PUCCH resource for the scheduling request in the subframe.