Method for transmitting and receiving signal in wireless communication system and apparatus for supporting same

A user equipment in a wireless communication system, the user equipment comprising:

• at least one processor;
• at least one transceiver;
• and
• at least one computer memory operationally connected to the at least one processor and the at least one transceiver and enabling the at least one processor and the at least one transceiver to perform an operation when executed,
• wherein the operation comprises transmitting a Physical Random Access Channel (PRACH) based on a channel sensing result, receiving a Random Access Response (RAR) in response to the PRACH, and transmitting a Physical Uplink Shared Channel (PUSCH) based on the RAR,
• wherein the PUSCH is transmitted on a first resource in which channel sensing is succeeded among a plurality of candidate resources, and
• wherein the plurality of candidate resources include a plurality of symbol groups or multiple frequency regions.

An apparatus used in a wireless communication system, the apparatus comprising:

• at least one processor;
• and
• at least one memory storing one or more commands enabling the at least one processor to perform an operation,
• wherein the operation comprises transmitting a Physical Random Access Channel (PRACH) based on a channel sensing result, receiving a Random Access Response (RAR) in response to the PRACH, and transmitting a Physical Uplink Shared Channel (PUSCH) based on the RAR,
• wherein the PUSCH is transmitted on a first resource in which channel sensing is succeeded in channel sensing among a plurality of candidate resources, and
• wherein the plurality of candidate resources include a plurality of symbol groups or multiple frequency regions.