Method and device for radio resource allocation in wireless communication system

A method for operating user equipment (UE) in wireless communication system, the method comprising;

• receiving, from a base station (BS), information indicating a result of a listen before talk (LBT) procedure and occupancy time of each of a plurality of subbands, wherein the occupancy time starts from a first symbol of a slot which the information is received by the UE;
• and
• identifying the information including a bitmap,
• wherein a subband of the plurality of subbands is available to be occupied if each bit of the bitmap is ‘1’, and
• wherein a subband of the plurality of subbands is not available to be occupied if each bit of the bitmap is ‘0’.

A device of a base station (BS) in wireless communication system, the device comprising;

• a transceiver;
• and
• at least one processor coupled with the transceiver;
• wherein the at least one processor is configured to:
• obtain a result of a listen before talk (LBT) procedure for a plurality of subbands by identifying that each of the plurality of subbands is available to be occupied or not, and
• transmit, to a user equipment (UE), information indicating the result of the LBT procedure and occupancy time of the each of the plurality of subbands,
• wherein the occupancy time starts from a first symbol of a slot which the information is received by the UE,
• wherein the information including a bitmap,
• wherein a subband of the plurality of subbands is available to be occupied if each bit of the bitmap is ‘1’, and
• wherein a subband of the plurality of subbands is not available to be occupied if each bit of the bitmap is ‘0’.