Apparatus and method for allocating resources in wireless communication system
An apparatus and a method for allocating resources in a wireless communication system is provided. More specifically, a method of determining an uplink transmission resource region for performing a channel access procedure of the BS through a channel access procedure type and subcarrier spacing and determining configuration of downlink resources of the BS through scheduling information and slot structure information is proposed. A method of operating a terminal in a wireless communication system includes acquiring a maximum channel occupancy time (MCOT) of the terminal within an unlicensed band, determining a time interval which a base station (BS) can use for downlink signal transmission in the maximum channel occupancy time, transmitting the maximum channel occupancy time and time information related to the time interval to the BS and receiving a downlink signal from the BS during the time interval in the maximum channel occupancy time.
1. A method of operating a terminal in a wireless communication system, the method comprising:
acquiring a maximum channel occupancy time (MCOT) of the terminal within an unlicensed band;
determining a time interval which a base station (BS) can use for downlink signal transmission in the MCOT;
transmitting the MCOT and time information related to the time interval to the BS; and
receiving 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, a 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.
2. The method of claim 1 , wherein the gap interval is configured according to the subcarrier spacing configured in the terminal.
3. The method of claim 1 , wherein the gap interval is configured to have a particular time length regardless of the subcarrier spacing configured in the terminal.
4. The method of claim 1 , wherein the time information further includes at least one of an index of a control resource set (CORESET) for the downlink signal transmission by the BS or an index of a search space set for the downlink signal transmission by the BS.
5. The method of claim 1 , wherein the time information further includes information on at least one of an uplink start slot of the terminal, an uplink start symbol of the terminal, or an uplink transmission length of the terminal.
6. 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.
7. The method of claim 6 , wherein the gap interval is configured according to the subcarrier spacing configured in the terminal.
8. The method of claim 6 , wherein the gap interval is configured to have a particular time length regardless of the subcarrier spacing configured in the terminal.
9. The method of claim 6 , wherein the time information further includes at least one of an index of a control resource set (CORESET) for the downlink signal transmission by the BS or an index of a search space set for the downlink signal transmission by the BS.
10. The method of claim 6 , wherein the time information further includes information on at least one of an uplink start slot of the terminal, an uplink start symbol of the terminal, or an uplink transmission length of the terminal.
11. The method of claim 6 , wherein the transmitting of the downlink signal comprises transmitting the downlink signal according to a gap interval configured by the terminal when gap interval information received from the terminal indicates a reserved or no gap.
12. The method of claim 6 , wherein the transmitting of the downlink signal comprises transmitting the downlink signal according to whether the MCOT is or is not shared.
13. The method of claim 12 , further comprising:
determining whether the MCOT is or is not shared based on the time information.
14. 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.