Method of transmission/reception for sidelink in a wireless communication system and apparatus therefor

A user equipment (UE) performing a sidelink transmission in a wireless communication system, the UE comprising:

• one or more transceivers;
• one or more processors;
• and
• one or more memories for storing instructions for operations executed by the one or more processors and coupled to the one or more processors;
• wherein the operations comprising:
• receiving, from a base station, configuration information related to a configuration of a sidelink resource pool;
• performing a sensing based on a sensing window related to the sensing of the user equipment;
• selecting, based on a result of the sensing, a resource for the sidelink transmission from the resource pool,
• wherein the sensing window is configured based on an available slot including at least one slot;
• performing, based on whether a RE-EVALUATION and/or a PRE-EMPTION on the resource selected based on the result of the sensing to be triggered, the RE-EVALUATION and/or the PRE-EMPTION related to resource re-selection,
• wherein a resource for the resource re-selection based on the RE-EVALUATION and/or the PRE-EMPTION is configured based on a remaining slot in which a slot related to the resource selected based on the result of the sensing is excluded from the available slot;
• and
• performing, based on (i) the resource selected based on the result of the sensing and/or (ii) a resource re-selected based on the RE-EVALUATION and/or the PRE-EMPTION, the sidelink transmission.

An apparatus comprising one or more memories and one or more processors operatively coupled to the one or more memories, the apparatus comprising:

• wherein the one or more processors controls the apparatus to:
• receive, from a base station, configuration information related to a configuration of a sidelink resource pool;
• perform a sensing based on a sensing window related to the sensing of the user equipment;
• select, based on a result of the sensing, a resource for the sidelink transmission from the resource pool,
• wherein the sensing window is configured based on an available slot including at least one slot;
• perform, based on whether a RE-EVALUATION and/or a PRE-EMPTION on the resource selected based on the result of the sensing to be triggered, the RE-EVALUATION and/or the PRE-EMPTION related to resource re-selection,
• wherein a resource for the resource re-selection based on the RE-EVALUATION and/or the PRE-EMPTION is configured based on a remaining slot in which a slot related to the resource selected based on the result of the sensing is excluded from the available slot;
• and
• perform, based on (i) the resource selected based on the result of the sensing and/or (ii) a resource re-selected based on the RE-EVALUATION and/or the PRE-EMPTION, the sidelink transmission.