Transport block transmission method and device

A user equipment (UE) operated in a wireless communication system, the UE comprising:

• a transceiver;
• a processor connected to the transceiver;
• and
• a memory operably coupled to the processor,
• wherein the processor is adapted to:
• generate first data and second data;
• generate a plurality of MAC PDUs (protocol data units) including at least one of the first data and the second data, wherein the plurality of MAC PDUs include i) a first MAC PDU including the first data and having a first logical channel priority, and ii) a second MAC PDU not including the first data but including the second data and having a second logical channel priority lower than the first logical channel priority;
• and
• transmit the MAC PDUs through a plurality of transport blocks, wherein at most one MAC PDU is transmitted through one transport block,
• wherein the plurality of transport blocks include a first transport block including the first MAC PDU and a second transport block including the second MAC PDU, and
• wherein the first transport block always includes one code block (CB) and the second transport block includes one or a plurality of code blocks.

A method performed by a base station in a wireless communication system, the method comprising:

• receiving first data and second data through a plurality of transport blocks;
• and
• decoding the first data and the second data,
• wherein the plurality of transport blocks include a first transport block including a first MAC PDU including the first data and having a first logical channel priority, and a second transport block including a second MAC PDU not including the first data but including the second data and having a second logical channel priority lower than the first logical channel priority, and
• wherein the first transport block always includes one code block (CB), and the second transport block includes one or a plurality of code blocks.