In order to solve the aforementioned problem, one disclosure in the present specification provides a wireless communication device. The wireless communication device may comprise: at least one transceiver; at least one processor; and at least one memory that stores an instruction and is operatively electrically connected to the at least one processor. An operation performed on the basis of an execution of the instruction by the at least one processor may comprise the steps of: receiving a network signal related to AMPR; determining uplink transmission power by applying a preset A-MPR value; and transmitting an uplink signal on the basis of the determined transmission power.