Sidelink transmission method, and terminal and computer-readable storage medium

1. A sidelink transmission method, comprising:

acquiring a time-frequency resource for transmission on a sidelink; and

taking a preset position on the time-frequency resource as a time domain transmission position of sidelink control information, and transmitting the sidelink control information on the sidelink;

wherein the preset position comprises a first preset position or a second preset position, and taking a preset position on the time-frequency resource as a time domain transmission position of sidelink control information comprises:

determining that the preset position is the first preset position or the second preset position based on a time when the time-frequency resource is successfully acquired, wherein a start position of the first preset position is earlier than a start position of the second preset position in a time domain,

wherein determining that the preset position is the first preset position or the second preset position based on a time when the time-frequency resource is successfully acquired comprises: based on that the time when the time-frequency resource is successfully acquired is later than a start time of the first preset position, determining that the preset position is the second preset position; or based on that the time when the time-frequency resource is successfully acquired is earlier than or is the start time of the first preset position, determining that the preset position is the first preset position,

wherein based on that the preset position is the second preset position, the method further comprises: transmitting sidelink data corresponding to the sidelink control information at a start time of a first symbol or a second symbol after the time-frequency resource is successfully acquired within a time window where the time-frequency resource is acquired.

2. The sidelink transmission method according to claim 1 , wherein a time domain length of the time-frequency resource is a resource selection time domain unit, and a frequency domain length of the time-frequency resource is at least one sub-channel, wherein the resource selection time domain unit comprises one time slot, a plurality of time slots or a plurality of symbols, and the sub-channel comprises at least one frequency domain resource block.

3. The sidelink transmission method according to claim 2 , wherein the first preset position is first L symbols in the resource selection time domain unit, wherein L is a time domain length of the sidelink control information, and is a positive integer less than or equal to a total number of symbols in the resource selection time domain unit.

4. The sidelink transmission method according to claim 2 , wherein the first preset position is second to (L+1) th symbols in the resource selection time domain unit, wherein L is a time domain length of the sidelink control information and is a positive integer, and (L+1) is less than or equal to a total number of symbols in the resource selection time domain unit.

5. The sidelink transmission method according to claim 2 , wherein the second preset position is (W+1) th to (W+L) th symbols in the resource selection time domain unit, wherein the W th symbol is an end symbol of a time window in the resource selection time domain unit, L is a time domain length of the sidelink control information, W and L are both positive integers, (W+L) is less than or equal to a total number of symbols in the resource selection time domain unit, the time window is a maximum length of time allowed for resource awareness in the resource selection time domain unit, and a start symbol of the time window is a start symbol of the resource selection time domain unit.

6. The sidelink transmission method according to claim 2 , wherein the second preset position is (W+2) th to (W+L+1) th symbols in the resource selection time domain unit, wherein (W+L+1) is less than or equal to a total number of symbols in the resource selection time domain unit, L is a time domain length of the sidelink control information, and W and L are both positive integers.

7. A non-transitory computer readable storage medium having computer instructions stored therein, wherein when the computer instructions are executed, the method of claim 1 is performed.

8. A terminal comprising a memory and a processor, wherein the memory has computer instructions stored therein, and when the processor executes the computer instructions, the method of claim 1 is performed.

9. A terminal, comprising:

an acquiring circuitry configured to acquire a time-frequency resource for transmission on a sidelink; and

a first transmitting circuitry configured to: take a preset position on the time-frequency resource as a time domain transmission position of sidelink control information, and transmit the sidelink control information on the sideling;

wherein the preset position comprises a first preset position or a second preset position, and the first transmitting circuitry is configured to determine that the preset position is the first preset position or the second preset position based on a time when the time-frequency resource is successfully acquired, wherein a start position of the first preset position is earlier than a start position of the second preset position in a time domain,

wherein the first transmitting circuitry is configured to: based on that the time when the time-frequency resource is successfully acquired is later than a start time of the first preset position, determine that the preset position is the second preset position; or based on that the time when the time-frequency resource is successfully acquired is earlier than or is the start time of the first preset position, determine that the preset position is the first preset position,

wherein the terminal further comprises a second transmitting circuitry configured to: based on that the preset position is the second preset position, transmit sidelink data corresponding to the sidelink control information at a start time of a first symbol or a second symbol after the time-frequency resource is successfully acquired within a time window where the time-frequency resource is acquired.

10. The terminal according to claim 9 , wherein a time domain length of the time-frequency resource is a resource selection time domain unit, and a frequency domain length of the time-frequency resource is at least one sub-channel, wherein the resource selection time domain unit comprises one time slot, a plurality of time slots or a plurality of symbols, and the sub-channel comprises at least one frequency domain resource block.

11. The terminal according to claim 10 , wherein the first preset position is first L symbols in the resource selection time domain unit, wherein L is a time domain length of the sidelink control information, and is a positive integer less than or equal to a total number of symbols in the resource selection time domain unit.

12. The terminal according to claim 10 , wherein the first preset position is second to (L+1) th symbols in the resource selection time domain unit, wherein L is a time domain length of the sidelink control information and is a positive integer, and (L+1) is less than or equal to a total number of symbols in the resource selection time domain unit.

13. The terminal according to claim 10 , wherein the second preset position is (W+1) th to (W+L) th symbols in the resource selection time domain unit, wherein the W th symbol is an end symbol of a time window in the resource selection time domain unit, L is a time domain length of the sidelink control information, W and L are both positive integers, (W+L) is less than or equal to a total number of symbols in the resource selection time domain unit, the time window is a maximum length of time allowed for resource awareness in the resource selection time domain unit, and a start symbol of the time window is a start symbol of the resource selection time domain unit.

14. The terminal according to claim 10 , wherein the second preset position is (W+2) th to (W+L+1) th symbols in the resource selection time domain unit, wherein (W+L+1) is less than or equal to a total number of symbols in the resource selection time domain unit, L is a time domain length of the sidelink control information, and W and L are both positive integers.