Resource allocation method and apparatus

1. A method for resource allocation, applied to user equipment (UE), comprising:

receiving resource allocation indication information from a base station, wherein the resource allocation indication information indicates a time domain resource occupied by a forward time-frequency resource for sidelink communication in a slot and a time domain resource occupied by a reverse time-frequency resource for sidelink communication in the slot, the forward time-frequency resource transmits at least one of a physical sidelink share channel (PSSCH) or a physical sidelink control channel (PSCCH), and the reverse time-frequency resource transmits a physical sidelink feedback channel (PSFCH) from a device for receiving the user data to a device for transmitting the user data; and

determining, according to the resource allocation indication information, the time domain resource occupied by the forward time-frequency resource in the slot and the time domain resource occupied by the reverse time-frequency resource in the slot, wherein sequence number of a time domain symbol occupied by the forward time-frequency resource is smaller than sequence number of a time domain symbol occupied by the reverse time-frequency resource, the forward time-frequency resource occupies the time domain symbol at a front position in the slot, and the reverse time-frequency resource occupies the time domain symbol at a latter position in the slot.

2. The method of claim 1 , wherein the resource allocation indication information comprises at least one of: first resource indication information or second resource indication information; and

wherein the first resource indication information indicates a length of the time domain resource occupied by the forward time-frequency resource, and the second resource indication information indicates a length of the time domain resource occupied by the reverse time-frequency resource.

3. The method of claim 1 , wherein the resource allocation indication information comprises at least one of: third resource indication information or fourth resource indication information; and

wherein the third resource indication information indicates a starting position and a length of the time domain resource occupied by the forward time-frequency resource, and the fourth resource indication information indicates a starting position and a length of the time domain resource occupied by the reverse time-frequency resource.

4. The method of claim 1 , wherein the resource allocation indication information comprises an identifier of a time domain resource allocation format indicating the UE to determine, according to the time domain resource allocation format, the time domain resource occupied by the forward time-frequency resources and the time domain resource occupied by the reverse time-frequency resource.

5. The method of claim 1 , wherein said receiving the resource allocation indication information from the base station comprises:

receiving a radio resource control (RRC) signaling from the base station, wherein the RRC signaling comprises the resource allocation indication information; or

receiving downlink control information (DCI) from the base station, wherein the DCI comprises the resource allocation indication information.

6. The method of claim 1 , further comprising:

determining a time domain resource between the forward time-frequency resource and the reverse time-frequency resource as a guard interval, wherein the time domain resource occupied by the guard interval provides the UE with a time for switching between transmission directions.

7. The method of claim 1 , wherein the feedback information comprises any one of: hybrid automatic repeat request (HARQ) feedback information or channel state information (CSI) feedback information, or a combination thereof, and wherein a last time domain symbol of the slot is not used to transmit the PSSCH.

8. A method for resource allocation, applied to a base station, comprising:

transmitting resource allocation indication information to a user equipment (UE), wherein the resource allocation indication information indicates a time domain resource occupied by a forward time-frequency resource for sidelink communication in a slot and a time domain resource occupied by a reverse time-frequency resource for sidelink communication in the slot, so that the UE determines the time domain resource occupied by the forward time-frequency resource in the slot and the reverse time-frequency resource in the slot according to the resource allocation indication information,

wherein the forward time-frequency resource transmits at least one of a physical sidelink share channel (PSSCH) or a physical sidelink control channel (PSCCH), and the reverse time-frequency resource transmits a physical sidelink feedback channel (PSFCH) from a device for receiving the user data to a device for transmitting the user data,

wherein sequence number of a time domain symbol occupied by the forward time-frequency resource is smaller than sequence number of a time domain symbol occupied by the reverse time-frequency resource, the forward time-frequency resource occupies the time domain symbol at a front position in the slot, and the reverse time-frequency resource occupies the time domain symbol at a latter position in the slot.

9. The method of claim 8 , wherein the resource allocation indication information comprises at least one of: first resource indication information or second resource indication information; and

wherein the first resource indication information indicates a length of the time domain resource occupied by the forward time-frequency resource, and the second resource indication information indicates a length of the time domain resource occupied by the reverse time-frequency resource.

10. The method of claim 8 , wherein the resource allocation indication information comprises at least one of: third resource indication information or fourth resource indication information; and

wherein the third resource indication information indicates a starting position and a length of the time domain resource occupied by the forward time-frequency resource, and the fourth resource indication information indicates a starting position and a length of the time domain resource occupied by the reverse time-frequency resource.

11. The method of claim 8 , wherein the resource allocation indication information comprises an identifier of a time domain resource allocation format indicating the UE to determine, according to the time domain resource allocation format, the time domain resource occupied by the forward time-frequency resources and the time domain resource occupied by the reverse time-frequency resource.

12. The method of claim 8 , wherein said transmitting the resource allocation indication information to the UE comprises:

transmitting a radio resource control (RRC) signaling to the UE, wherein the RRC signaling comprises the resource allocation indication information; or

transmitting downlink control information (DCI) to the UE, wherein the DCI comprises the resource allocation indication information.

13. The method of claim 8 , further comprising:

determining a time domain resource between the forward time-frequency resource and the reverse time-frequency resource as a guard interval, wherein the time domain resource occupied by the guard interval provides the UE with a time for switching between transmission directions.

14. The method of claim 8 , wherein the feedback information comprises any one of: hybrid automatic repeat request (HARQ) feedback information or channel state information (CSI) feedback information, or a combination thereof, and wherein a last time domain symbol of the slot is not used to transmit the PSSCH.

15. An apparatus for resource allocation, comprising:

a processor;

memory for storing instructions executable by the processor; and

a communication component;

wherein the processor is configured to execute the instructions to:

control the communication component to receive resource allocation indication information from a base station, wherein the resource allocation indication information indicates a time domain resource occupied by a forward time-frequency resource for sidelink communication in a slot and a time domain resource occupied by a reverse time-frequency resource for sidelink communication in the slot, the forward time-frequency resource transmits at least one of a physical sidelink share channel (PSSCH) or a physical sidelink control channel (PSCCH), and the reverse time-frequency resource transmits a physical sidelink feedback channel (PSFCH) from a device for receiving the user data to a device for transmitting the user data; and

determine, according to the resource allocation indication information, the time domain resource occupied by the forward time-frequency resource in the slot and the time domain resource occupied by the reverse time-frequency resource in the slot, wherein sequence number of a time domain symbol occupied by the forward time-frequency resource is smaller than sequence number of a time domain symbol occupied by the reverse time-frequency resource, the forward time-frequency resource occupies the time domain symbol at a front position in the slot, and the reverse time-frequency resource occupies the time domain symbol at a latter position in the slot.

16. The apparatus of claim 15 , wherein the resource allocation indication information comprises at least one of: first resource indication information or second resource indication information; and

wherein the first resource indication information indicates a length of the time domain resource occupied by the forward time-frequency resource, and the second resource indication information indicates a length of the time domain resource occupied by the reverse time-frequency resource.

17. The apparatus of claim 15 , wherein the resource allocation indication information comprises at least one of: third resource indication information or fourth resource indication information; and

wherein the third resource indication information indicates a starting position and a length of the time domain resource occupied by the forward time-frequency resource, and the fourth resource indication information indicates a starting position and a length of the time domain resource occupied by the reverse time-frequency resource.

18. The apparatus of claim 15 , wherein the resource allocation indication information comprises an identifier of a time domain resource allocation format indicating the UE to determine, according to the time domain resource allocation format, the time domain resource occupied by the forward time-frequency resource and the time domain resource occupied by the reverse time-frequency resource.

19. The apparatus of claim 15 , wherein the processor is further configured to:

receive a radio resource control (RRC) signaling from the base station, wherein the RRC signaling comprises the resource allocation indication information; or

receive downlink control information (DCI) from the base station, wherein the DCI comprises the resource allocation indication information.

20. The apparatus of claim 15 , wherein the processor is further configured to:

determine a time domain resource between the forward time-frequency resource and the reverse time-frequency resource as a guard interval, wherein the time domain resource occupied by the guard interval provides the UE with a time for switching between transmission directions.