Method and apparatus for terminal self-reselecting resource based on priority in wireless communication system

A User Equipment (UE) adapted to operate in a wireless communication system, the UE comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
• i) if a media access control (MAC) entity of the UE has been configured to transmit using a pool of resources, ii) if the MAC entity has selected to create a sidelink grant corresponding to transmissions of multiple MAC Protocol Data Units (PDUs), and iii) if data is available in a logical channel:
• performing sidelink resource reselection check;
• wherein performing the sidelink resource reselection check comprises:
• if transmission with the sidelink grant cannot fulfill a Packet Delay Budget (PDB) of the data in the logical channel according to a priority:
• selecting sidelink resources;
• and
• performing transmission of the data on the sidelink resources indicated in the sidelink grant.

A processing apparatus adapted to control a User Equipment (UE) in a wireless device in a wireless communication system, the processing apparatus comprising:

• at least one processor;
• and
• at least one memory operably connectable to the at least one processor,
• wherein the at least one processor is configured to perform operations comprising:
• i) if a media access control (MAC) entity of the UE has been configured to transmit using a pool of resources, ii) if the MAC entity has selected to create a sidelink grant corresponding to transmissions of multiple MAC Protocol Data Units (PDUs), and iii) if data is available in a logical channel:
• performing sidelink resource reselection check;
• wherein performing the sidelink resource reselection check comprises:
• if transmission with the sidelink grant cannot fulfill a Packet Delay Budget (PDB) of the data in the logical channel according to a priority:
• selecting sidelink resources.