Method for determining sidelink resource and terminal
Embodiments of the present disclosure provide methods and terminals for determining a sidelink resource. An exemplary method includes determining, according to at least one of a frequency domain resource of SCI and frequency domain resource indication information carried by the SCI, a frequency domain resource of a target resource indicated by the SCI. The method also includes determining, according to at least one of a time domain resource of the SCI and time domain resource indication information carried by the SCI, a time domain resource of a target resource indicated by the SCI.
1. A method for determining a sidelink resource, wherein the method is executed by a terminal and comprises:
determining, according to frequency domain resource indication information carried by Sidelink Control Information (SCI), a frequency domain resource of a target resource indicated by the SCI,
wherein:
the frequency domain resource indication information comprises; first frequency domain resource indication information for indicating a resource of a currently transmitted Physical Sidelink Shared Channel (PSSCH), and second frequency domain resource indication information for indicating a reserved resource; and
the number of pieces of the first frequency domain resource indication information is 1, and the number of pieces of the second frequency domain resource indication information is N−1, wherein N is the number of pieces of frequency domain resource indication information carried in the SCI, and N is a positive integer greater than 2;
and
determining, according to at least one of a time domain resource of the SCI and time domain resource indication information carried by the SCI, a time domain resource of a target resource indicated by the SCI.
2. The method according to claim 1 , wherein determining, according to the frequency domain resource indication information carried by the SCI, the frequency domain resource of the target resource indicated by the SCI comprises:
determining the frequency domain resource of the target resource according to a frequency domain resource of the SCI, information about a frequency domain position relationship between the frequency domain resource of the target resource and the frequency domain resource of the SCI, and a size of the frequency domain resource of the target resource.
3. The method according to claim 2 , wherein the information about the frequency domain position relationship comprises one of the following:
frequency domain positions of the frequency domain of the target resource and of the frequency domain resource of the SCI are the same; or
a frequency domain offset value between the frequency domain resource of the target resource and the frequency domain resource of the SCI.
4. The method according to claim 2 , wherein the size of the frequency domain resource of the target resource is a predefined or pre-configured value, or is determined according to information about a relationship between the size of the frequency domain resource of the target resource and a size of the frequency domain resource of the SCI.
5. The method according to claim 4 , wherein the information about the relationship between the size of the frequency domain resource of the target resource and the size of the frequency domain resource of the SCI comprises one of the following:
the size of the frequency domain resource of the target resource is equal to the size of the frequency domain resource of the SCI;
the size of the frequency domain resource of the target resource and the size of the frequency domain resource of the SCI are in a scaling relationship according to a specified scaling factor; or
a specified size difference is set between the size of the frequency domain resource of the target resource and the size of the frequency domain resource of the SCI.
6. The method according to claim 1 , wherein the target resource indicated by the SCI comprises the resource of the currently transmitted PSSCH indicated by the SCI and the reserved resource, wherein the reserved resource is used for transmission of the currently transmitted PSSCH.
7. The method according to claim 6 , wherein determining, according to the frequency domain resource indication information carried by the SCI, the frequency domain resource of the target resource indicated by the SCI comprises:
determining, according to the frequency domain resource indication information carried by the SCI and at least one of a frequency domain resource of the SCI or information about a relationship of sizes of the frequency domain resource of the target resource, the frequency domain resource of the target resource indicated by the SCI, wherein
the information about the relationship between the sizes of the frequency domain resource of the target resource comprises at least one of the following:
sizes of the frequency domain resource of the target resource are scaled proportionally in time sequence;
sizes of the frequency domain resource of the target resource are set with an equal size difference in time sequence;
sizes of the frequency domain resource of the target resource are the same; or
sizes of the frequency domain resource of the reserved resource are the same.
8. The method according to claim 1 , wherein the SCI comprises first-stage SCI and second-stage SCI:
the first frequency domain resource indication information and the second frequency domain resource indication information are both carried in the first-stage SCI.
9. The method according to claim 6 , wherein the time domain resource indication information comprises at least one of the following:
a time domain interval between a time domain resource of the reserved resource and the time domain resource of the resource of the currently transmitted PSSCH;
a time domain interval between a time domain resource of the reserved resource and the time domain resource of the SCI;
a time domain interval between two of the target resources;
a time domain interval between two of the reserved resources;
a reserved period of a time domain resource of the resource of the currently transmitted PSSCH; or
a reserved period of the time domain resource of the target resource.
10. The method according to claim 6 , wherein determining, according to the frequency domain resource indication information carried by the SCI, the frequency domain resource of the target resource indicated by the SCI; and determining, according to the at least one of the time domain resource of the SCI and the time domain resource indication information carried by the SCI, the time domain resource of the target resource indicated by the SCI comprises:
when an initial transmission and retransmission indicator carried by the SCI indicates that data on the target resource is retransmitted data, or a Hybrid Automatic Repeat reQuest (HARQ) process ID carried in the SCI is the same as a HARQ process ID carried in the stored SCI, and a New Data Indicator (NDI) carried in the SCI is not flipped:
determining, according to the frequency domain resource indication information carried by the SCI, the frequency domain resource of the target resource indicated by the SCI; and determining, according to the time domain resource indication information carried by the SCI or the time domain resource of the SCI, the time domain resource of the target resource indicated by the SCI;
or
determining, according to the frequency domain resource indication information carried by the SCI or a frequency domain resource of the SCI, the frequency domain resource of the target resource indicated by the SCI, and determining, according to the time domain resource indication information carried by the SCI, the time domain resource of the target resource indicated by the SCI.
11. The method according to claim 1 , wherein determining, according to the time domain resource indication information carried by the SCI, the time domain resource of the target resource indicated by the SCI comprises:
determining the time domain resource of the target resource according to the time domain resource of the SCI and information about a relationship between the time domain resource of the target resource and the time domain resource of the SCI.
12. The method according to claim 11 , wherein the information about a relationship between the time domain resource of the target resource and the time domain resource of the SCI comprises one of the following:
the time domain resource of the target resource and the time domain resource of the SCI are located in the same time slot;
the time domain resource of the target resource occupies a plurality of time slots, and the time domain resource of the SCI is located in at least one of the plurality of time slots;
the time domain resource of the SCI is located in a pattern of the time domain resource of the target resource; or
a time domain offset between a time domain position of the target resource and a time domain position of the time domain resource of the SCI.
13. The method according to claim 1 , wherein determining, according to the frequency domain resource indication information carried by the SCI, the frequency domain resource of the target resource indicated by the SCI; and determining, according to the at least one of the time domain resource of the SCI and the time domain resource indication information carried by the SCI, the time domain resource of the target resource indicated by the SCI comprises:
when an initial transmission and retransmission indicator carried by the SCI indicates that data on the target resource is initially transmitted data, or a Hybrid Automatic Repeat reQuest (HARQ) process ID carried in the SCI is the same as a HARQ process ID carried in the stored SCI, and a New Data Indicator (NDI) carried in the SCI is flipped: determining, according to a frequency domain resource of the SCI, the frequency domain resource of the target resource indicated by the SCI, and determining, according to the time domain resource of the SCI, the time domain resource of the target resource indicated by the SCI,
wherein the SCI comprises first-stage SCI, wherein the first-stage SCI carries the initial transmission and retransmission indicator or carries the HARQ process ID and NDI.
14. A terminal, comprising: a processor, a memory, and a computer program that is stored in the memory and that can be run on the processor, wherein the computer program, when executed by the processor, causes the processor to implement a method for determining a sidelink resource, the method comprising:
determining, according to frequency domain resource indication information carried by Sidelink Control Information (SCI), a frequency domain resource of a target resource indicated by the SCI,
wherein:
the frequency domain resource indication information comprises: first frequency domain resource indication information for indicating a resource of a currently transmitted Physical Sidelink Shared Channel (PSSCH), and second frequency domain resource indication information for indicating a reserved resource; and
the number of pieces of the first frequency domain resource indication information is 1, and the number of pieces of the second frequency domain resource indication information is N−1, wherein N is the number of pieces of frequency domain resource indication information carried in the SCI, and N is a positive integer greater than 2;
and
determining, according to at least one of a time domain resource of the SCI and time domain resource indication information carried by the SCI, a time domain resource of a target resource indicated by the SCI.
15. A non-transitory computer-readable storage medium, storing a program that, when executed by a processor, causes the processor to implement a method for determining a sidelink resource, the method comprises:
determining, according to frequency domain resource indication information carried by Sidelink Control Information (SCI), a frequency domain resource of a target resource indicated by the SCI,
wherein;
the frequency domain resource indication information comprises: first frequency domain resource indication information for indicating a resource of a currently transmitted Physical Sidelink Shared Channel (PSSCH), and second frequency domain resource indication information for indicating a reserved resource; and
the number of pieces of the first frequency domain resource indication information is 1, And the number of pieces of the second frequency domain resource indication information is N−1, wherein N is the number of pieces of frequency domain resource indication information carried in the SCI, and N is a positive integer greater than 2;
and
determining, according to at least one of a time domain resource of the SCI and time domain resource indication information carried by the SCI, a time domain resource of a target resource indicated by the SCI.
16. The method according to claim 6 , wherein the frequency domain resource indication information comprises at least one of the following:
a start position of a frequency domain resource of the currently transmitted PSSCH;
a size of a frequency domain resource of the currently transmitted PSSCH;
a start position of a frequency domain resource of the reserved resource; or
a size of a frequency domain resource of the reserved resource.
17. The terminal according to claim 14 , wherein determining, according to the frequency domain resource indication information carried by the SCI, the frequency domain resource of the target resource indicated by the SCI comprises:
determining the frequency domain resource of the target resource according to a frequency domain resource of the SCI, information about a frequency domain position relationship between the frequency domain resource of the target resource and the frequency domain resource of the SCI, and a size of the frequency domain resource of the target resource.
18. The terminal according to claim 17 , wherein the information about the frequency domain position relationship comprises one of the following:
frequency domain positions of the frequency domain of the target resource and of the frequency domain resource of the SCI are the same; or
a frequency domain offset value between the frequency domain resource of the target resource and the frequency domain resource of the SCI.
19. The terminal according to claim 17 , wherein the size of the frequency domain resource of the target resource is a predefined or pre-configured value, or is determined according to information about a relationship between the size of the frequency domain resource of the target resource and a size of the frequency domain resource of the SCI.
20. The terminal according to claim 19 , wherein the information about the relationship between the size of the frequency domain resource of the target resource and the size of the frequency domain resource of the SCI comprises one of the following:
the size of the frequency domain resource of the target resource is equal to the size of the frequency domain resource of the SCI;
the size of the frequency domain resource of the target resource and the size of the frequency domain resource of the SCI are in a scaling relationship according to a specified scaling factor; or
a specified size difference is set between the size of the frequency domain resource of the target resource and the size of the frequency domain resource of the SCI.