Method for performing uplink transmission in wireless communication system, and apparatus therefor

A terminal for performing uplink transmission in a wireless communication system, the terminal comprising:

• a radio frequency (RF) module;
• at least one processor;
• and
• at least one computer memory operably accessible to the at least one processor and for storing instructions for performing operations when executed by the at least one processor,
• wherein the operations comprise:
• transmitting a physical random access channel (PRACH) preamble to a base station based on a transmission unit indicating a physical layer resource set;
• receiving a random access response (RAR) comprising a timing advance (TA) value from the base station;
• and
• transmitting the uplink signal based on the RAR,
• wherein transmission unit configuration information for the transmission unit configured in the terminal is transmitted to the base station through the PRACH preamble or the uplink signal.