Method and terminal for transmitting aperiodic signal in wireless communication terminal

A method of transmitting, by a first user equipment (UE), a signal in a wireless communication system, the method comprising:

• selecting, by the first UE, a first candidate resource group for a control signal and a second candidate resource group for a data signal, from among a plurality of candidate resource groups each including at least one subchannel;
• transmitting, by the first UE to a second UE through a physical sidelink control channel (PSCCH), the control signal based on first time resources in the first candidate resource group;
• and
• transmitting, by the first UE to the second UE through a physical sidelink shared channel (PSSCH), the data signal based on second time resources in the second candidate resource group,
• wherein the first candidate resource group and the second candidate resource group are selected based on a sensing result of the first UE associated with the plurality of candidate resource groups,
• wherein the first time resources for the control signal are located before the second time resources for the data signal, and
• wherein a reference signal received power (RSRP) of the PSSCH is calculated based on a RSRP of the PSCCH.