Method and device for performing subframe-type-related transmission/reception in wireless communication system
One embodiment of the present invention relates to a method whereby a first terminal performs transmission or reception in a subframe in a wireless communication system, the subframe-type-related transmission/reception method comprising the steps of: determining to which a first subframe belongs among a plurality of subframe types; and performing either uplink transmission or downlink reception in an uplink resource or a downlink resource which is determined based on the determined type, wherein to which of the plurality of subframe types the first subframe belongs is indicated in each of K (K>1) subframes from the Lth (L>0) subframe in front of the first subframe, and each of the K subframes indicates to which of the plurality of subframe types K subframes from the Lth subframe therebehind belong. The first terminal is included in an autonomous vehicle.
1. A method of performing transmission or reception in a subframe by a first user equipment (UE) in a wireless communication system, the method comprising:
determining a subframe type of a first subframe from among a plurality of subframe types; and
performing one of uplink transmission and downlink reception in an uplink resource or a downlink resource according to the determined subframe type,
wherein the subframe type of the first subframe among the plurality of subframe types is indicated by each of K (K>1) subframes earlier than the first subframe by L (L>0) subframes, and each of the K subframes indicates the subframe types of K subframes after L subframes among the plurality of subframe types.
2. The method according to claim 1 , wherein an index of the first subframe is determined to be a next index to an index of a transmitted subframe shortly previous to the first subframe among subframes of the determined subframe type.
3. The method according to claim 2 , wherein a measurement result of the first UE is also used in a next index to the determined index.
4. The method according to claim 2 , wherein the determined index is used to determine a hybrid automatic repeat request (HARQ) acknowledgment/negative acknowledgment (ACK/NACK) transmission subframe.
5. The method according to claim 2 , wherein the determined index is used to reserve sidelink resources.
6. The method according to claim 2 , wherein the determined index is used to generate a reference signal sequence or a scrambling sequence.
7. The method according to claim 1 , wherein if the first UE is an out-coverage UE, a UE transmitting a synchronization signal transmits an indication indicating the subframe type of the first subframe among the plurality of subframe types.
8. The method according to claim 7 , wherein the indication is transmitted on a physical sidelink broadcast channel (PSBCH).
9. The method according to claim 8 , wherein the PSBCH is transmitted in the K subframes earlier than the first subframe by L subframes.
10. The method according to claim 1 , wherein each of the plurality of subframe types includes two or more of a downlink resource region, an uplink resource region, a downlink control information region, an uplink control information region, and a guard period.
11. The method according to claim 1 , wherein each of the plurality of subframe types has a different subframe structure.
12. The method according to claim 1 , wherein information indicating the subframe type of the first subframe is transmitted in one or more resource elements (REs) of the K subframes earlier than the first subframe by L subframes.
13. A first user equipment (UE) for performing transmission or reception in a subframe in a wireless communication system, the first UE comprising:
a transmitter and a receiver; and
a processor,
wherein the processor is configured to determine a subframe type of a first subframe from among a plurality of subframe types, and to perform one of uplink transmission and downlink reception in an uplink resource or a downlink resource according to the determined subframe type, and
wherein the subframe type of the first subframe among the plurality of subframe types is indicated by each of K (K>1) subframes earlier than the first subframe by L (L>0) subframes, and each of the K subframes indicates the subframe types of K subframes after L subframes among the plurality of subframe types.
14. The UE of claim 13 , wherein the first UE is included in an autonomous vehicle.