Method and device for transmitting and receiving PSCCH and PSSCH by terminal in wireless communication system
An embodiment of the present invention provides a method for receiving a physical sidelink control channel (PSCCH) and a physical sidelink shared channel (PSSCH) by a terminal in a wireless communication system. The method for receiving a PSCCH and a PSSCH comprises the steps of: receiving a PSCCH comprising information, which indicates a time interval between a PSCCH and a PSSCH indicated by means of the PSCCH, and information which indicates whether the PSSCH is retransmission; and receiving the PSSCH in a resource determined by means of the information indicating the time interval and the information indicating whether the PSSCH is retransmission, wherein, on the basis of whether the PSSCH is retransmission, the information indicating the time interval is determined to be used as a positive value or a negative value when the resource is determined.
1. A method of receiving a PSCCH (Physical sidelink control channel) and a PSSCH (Physical sidelink shared channel), which are received by a user equipment (UE) in a wireless communication system, comprising the steps of:
receiving, by the UE, a PSCCH including a first information indicating a time interval between an initial transmission and a retransmission of a PSSCH and a second information indicating whether the PSSCH corresponds to the initial transmission or the retransmission; and
identifying, by the UE, at least one resource among two resources for the initial transmission and the retransmission based on the first information and the second information,
wherein the first information is used as a positive value for identifying a retransmission resource from a resource of the PSCCH based on that the second information indicates the initial transmission, and
wherein the first information is used as a negative value for identifying an initial transmission resource from a resource of the PSCCH based on that the second information indicates the retransmission.
2. The method of claim 1 , wherein when the PSSCH corresponds to the retransmission, the initial transmission resource is included in a subframe n-k, wherein the PSCCH is in subframe n and the k is the time interval.
3. The method of claim 1 , wherein when the PSSCH corresponds to the initial transmission, the retransmission resource is included in a subframe n+k, wherein the resource of the PSCCH is in subframe n and the k is the time interval.
4. The method of claim 1 , wherein when the PSCCH and the PSSCH are FDMed (Frequency Division Multiplexed) and the PSSCH corresponds to the retransmission, the UE estimates a measurement result for the PSSCH using a measurement result of a first transmission of the retransmission.
5. The method of claim 1 , wherein the measurement result corresponds to transmit power of a reference signal for the PSSCH.
6. The method of claim 5 , wherein the reference signal corresponds to a DMRS (DeModulation Reference Signal) of the PSCCH.
7. A user equipment (UE) receiving a PSCCH (Physical sidelink control channel) and a PSSCH (Physical sidelink shared channel) in a wireless communication system, comprising:
a transmitter and receiver; and
a processor, the processor configured to receive a PSCCH including a first information indicating a time interval between an initial transmission and a retransmission of a PSSCH and a second information indicating whether the PSSCH corresponds to the initial transmission or the retransmission, the processor configured to identify at least one resource among two resources for the initial transmission and the retransmission,
wherein the first information is used as a positive value for identifying a retransmission resource from a resource of the PSCCH based on that the second information indicates the initial transmission, and
wherein the first information is used as a negative value for identifying an initial transmission resource from a resource of the PSCCH based on that the second information indicates the retransmission.
8. The UE of claim 7 , wherein when the PSSCH corresponds to the retransmission, the initial transmission resource is included in a subframe n-k, wherein the resource of the PSCCH is in subframe n and the k is the time interval.
9. The UE of claim 7 , wherein when the PSSCH corresponds to the initial transmission, the retransmission resource is included in a subframe n+k, wherein the resource of the PSCCH is in subframe n and the k is the time interval.
10. The UE of claim 7 , wherein when the PSCCH and the PSSCH are FDMed (Frequency Division Multiplexed) and the PSSCH corresponds to the retransmission, the UE estimates a measurement result for the PSSCH using a measurement result of a first transmission of the retransmission.
11. The UE of claim 7 , wherein the measurement result corresponds to transmit power of a reference signal for the PSSCH.
12. The UE of claim 11 , wherein the reference signal corresponds to a DMRS (DeModulation Reference Signal) of the PSCCH.