A method performed by a wireless transmit/receive unit (WTRU) including prioritizing channel state information (CSI) and selecting one or more CSI for transmission based on the prioritization of the CSI. The WTRU may receive RRC configuration information from a base station and determine identifier cell values for each of a plurality of cells, based on the configuration information. The WTRU determines whether to drop uplink control information (UCI) for a first of the plurality of cells by comparing a first value based on the identifier value of a first cell of the plurality of cells and a second value based on the identifier value of a second cell of the plurality of cells. The dropped UCI includes channel state information (CSI) and UCI of the second cell includes CSI which is transmitted to the base station.