Method for transmitting/receiving signal between terminal and base station in wireless communication system for supporting unlicensed band, and device for supporting same

A user equipment (UE) configured to communicate with a base station in a wireless communication system supportive of an unlicensed band, the UE comprising:

• a receiver;
• a transmitter;
• a processor connected to the receiver and the transmitter;
• and
• a computer-readable storage medium storing instructions that, based on being executed by the processor, control the UE to perform operations comprising:
• receiving, from a base station, uplink scheduling information of one or more wideband channels;
• and
• performing an uplink signal transmission through one or more wideband channels scheduled in the unlicensed band based on the received uplink scheduling information,
• wherein the performing the uplink signal transmission through the one or more wideband channels scheduled in the unlicensed band includes performing a Channel Access Procedure (CAP) for all Component Carriers (CCs) in the one or more wideband channels scheduled in the unlicensed band and performing the uplink signal transmission only through one or more wideband channels having succeeded in the CAP for all the included CCs among the scheduled one or more wideband channel,
• wherein the uplink scheduling information of the one or more wideband channels comprises a Carrier Indicator Field (CIF), Hybrid Automatic Repeat Quest (HARQ) process information, and Modulation and Coding Scheme (MCS) information shared for all CCs included in a specific wideband channel, and
• wherein based on the UE performing an uplink signal transmission through the specific wideband channel scheduled in the unlicensed band, the UE performs the uplink signal transmission by applying the same HARQ process information and MCS information per CC included in the specific wideband channel.

A base station configured to communicate with a user equipment (UE) in a wireless communication system supportive of an unlicensed band, the base station comprising:

• a receiver;
• a transmitter;
• a processor connected to the receiver and the transmitter;
• and
• a computer-readable storage medium storing instructions that, based on being executed by the processor, control the UE to perform operations comprising:
• transmitting, to a user equipment (UE), uplink scheduling information of one or more wideband channels, and
• performing an uplink signal reception through one or more wideband channels scheduled in the unlicensed band based on the transmitted uplink scheduling information,
• wherein the performing the uplink signal reception by the base station through the one or more wideband channels scheduled in the unlicensed band includes performing the uplink signal reception only through one or more wideband channels having succeeded in a CAP of the UE for all included Component Carriers (CCs) among the scheduled one or more wideband channels,
• wherein the uplink scheduling information of the one or more wideband channels comprises a Carrier Indicator Field (CIF), Hybrid Automatic Repeat Quest (HARQ) process information, and Modulation and Coding Scheme (MCS) information shared for all CCs included in a specific wideband channel, and
• wherein based on the base station performing the uplink signal reception through the specific wideband channel scheduled in the unlicensed band, the base station performs the uplink signal reception to which the same HARQ process information and MCS information are applied per CC included in the specific wideband channel.