Apparatus and method for allocating resources in wireless communication system

A method of operating a base station (BS) in a wireless communication system, the method comprising:

• receiving a maximum channel occupancy time (MCOT) of a terminal within an unlicensed band and time information related to a time interval which the BS can use for downlink signal transmission in the MCOT from the terminal;
• and
• transmitting a downlink signal to the terminal during the time interval in the MCOT,
• wherein the time information includes information on a gap interval for channel access of the BS before a time point at which the BS initiates the downlink signal,
• wherein the time information includes a listen before talk (LBT) type indication for the gap interval, and slot indication including a downlink sharing indicator, and time indication indicating a number of slots for the downlink signal transmission,
• wherein the LBT type indication for the gap interval comprises bit information indicating a channel access procedure configured by the BS and a number of symbols emptied for the gap interval,
• wherein a first slot including the time point is a slot after a predetermined number of slots determined based on the downlink sharing indicator from a second slot in which the downlink sharing indicator is transmitted to the BS, and
• wherein the predetermined number of the slots is configured by the BS based on subcarrier spacing.

An apparatus of a terminal in a wireless communication system, the apparatus comprising:

• a transceiver;
• and
• at least one processor electrically connected to the transceiver,
• wherein the at least one processor is configured to:
• acquire a maximum channel occupancy time (MCOT) of the terminal within an unlicensed band,
• configure a time interval which a base station (BS) can use for downlink signal transmission in the MCOT,
• transmit the MCOT and time information related to the time interval to the BS, and
• receive a downlink signal from the BS during the time interval in the MCOT,
• wherein the time information includes information on a gap interval for channel access of the BS before a time point at which the BS initiates the downlink signal,
• wherein the time information includes a listen before talk (LBT) type indication for the gap interval, and slot indication including a downlink sharing indicator, and time indication indicating a number of slots for the downlink signal transmission,
• wherein the LBT type indication for the gap interval comprises bit information indicating a channel access procedure configured by the BS and a number of symbols emptied for the gap interval,
• wherein a first slot including the time point is a slot after a predetermined number of slots determined based on the downlink sharing indicator from a second slot in which the downlink sharing indicator is transmitted to the BS, and
• wherein the predetermined number of the slots is configured by the BS based on subcarrier spacing.