Uplink signal transmission method of terminal in wireless communication system and device for supporting same

A User Equipment (UE) for transmitting an uplink signal to a base station in a wireless communication system, the UE comprising:

• a transmitter;
• a receiver;
• and
• a processor connected to the transmitter and the receiver,
• wherein the processor is configured to:
• determine a method of multiplexing a plurality of uplink signals scheduled during a predetermined length of time period by considering maximum transmission power of the UE;
• and
• transmit the plurality of uplink signals during the predetermined length of time period based on the determined multiplexing method,
• wherein when aa first uplink signal and a second uplink signal, among the plurality of uplink signals, overlap with each other within a first symbol period in a time resource domain, the multiplexing method comprises:
• a first multiplexing method of performing puncturing or rate-matching at a Resource Element (RE) level during the first symbol period for either or both of the first uplink signal and second uplink signal, or
• a second multiplexing method of combining information included in the first uplink signal and second uplink signal and transmitting the information via the first uplink signal or second uplink signal.