A method and apparatus provide a user equipment (UE) comprising:a transceiver configured to transmit or receive signals; anda processor coupled with the transceiver and configured to allocate power to uplink channel transmissions according to a priority order, in case that the UE operates with carrier aggregation, CA and a total transmit power for the uplink channel transmissions exceed a maximum transmission power in linear value,wherein the priority order is defined that:an uplink channel transmission with hybrid automatic repeat request acknowledgement, HARQ-ACK, is prioritized over a uplink channel transmission with channel state information, CSI, andan uplink channel transmission with CSI is prioritized over a uplink channel transmission without HARQ-ACK or CSI.