Uplink data transmission method in wireless communication system supporting non-licensed band and device supporting same

A method of transmitting uplink (UL) data by a user equipment (UE) in a wireless communication system supporting an unlicensed band, the method comprising:

• receiving scheduling information for UL data transmission,
• wherein the scheduling information comprises first offset information received on a first time resource, second offset information received on a second time resource, and starting position information of the UL data transmission;
• identifying a maximum timing advance (TA) value for the UE based on the first offset information, the second offset information, and the starting position information;
• and
• performing the UL data transmission on the unlicensed band or dropping the UL data transmission, at a starting position related with the starting position information within a third time resource, based on a result of comparing the maximum TA value with a TA value configured to the UE,
• wherein the third time resource is identified based on the first offset information and the second offset information.

A user equipment (UE) for transmitting uplink (UL) data in a wireless communication system supporting an unlicensed band, the UE comprising:

• a transmitter;
• a receiver;
• and
• at least one processor coupled with the transmitter and the receiver,
• wherein the at least one processor is configured to:
• receive scheduling information for UL data transmission,
• wherein the scheduling information comprises first offset information received on a first time resource, second offset information received on a second time resource, and starting position information of the UL data transmission;
• identify a maximum timing advance (TA) value for the UE based on the first offset information, the second offset information, and the starting position information;
• and
• perform the UL data transmission on the unlicensed band or dropping the UL data transmission, at a starting position related with the starting position information within a third time resource, based on a result of comparing the maximum TA value with a TA value configured to the UE,
• wherein the third time resource is identified based on the first offset information and the second offset information.