Method and device used in node for wireless communication

1. A method in a first communication node for wireless communication, comprising:

transmitting first information, the first information being used for indicating a target time length, the target time length being one candidate time length in a target candidate time length set, the target candidate time length set comprising a positive integer number, greater than 1, of candidate time lengths, and the first information being transmitted through an air interface; and

transmitting a first radio signal, the first radio signal occupying a first time interval in time domain;

wherein the first time interval belongs to a first time window, a time length of the first time window is greater than a time length of the first time interval, time domain resources in the first time window other than the first time interval are reserved as a gap by a transmitter of the first radio signal, and the target time length is equal to a difference value between the time length of the first time window and the time length of the first time interval; and at least a former one of a subcarrier spacing of a subcarrier occupied by the first radio signal or a position of frequency domain resources occupied by the first radio signal in frequency domain is used for determining the target candidate time length set.

2. The method according to claim 1 , wherein for a given subcarrier spacing of a subcarrier occupied by the first radio signal and a given position of frequency domain resources occupied by the first radio signal in frequency domain, a length of a cyclic prefix in one multicarrier symbol occupied by the first radio signal in time domain is also used for determining the target candidate time length set.

3. The method according to claim 1 , wherein the position of frequency domain resources occupied by the first radio signal in frequency domain is used for determining at least one of a first threshold or a second threshold, the first threshold is equal to a maximum candidate time length in the target candidate time length set, and the second threshold is equal to a minimum candidate time length in the target candidate time length set.

4. The method according to claim 1 , wherein a duration in time domain of one multicarrier symbol among the multicarrier symbols occupied by the first radio signal is equal to a first time length; a data time length in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal is equal to a second time length; any one candidate time length in the target candidate time length set is equal to a summation of K1 time(s) of the first time length plus K2 time(s) of the second time length, K1 is a non-negative integer, and K2 is equal to a difference between 1 and a non-negative integral power of ½; and a subcarrier spacing of a subcarrier occupied by the first radio signal is used for determining the first time length and the second time length.

5. The method according to claim 1 , wherein each candidate time length in the target candidate time length set is equal to a positive integral multiple of a maximum sampling interval length, and a subcarrier spacing of a subcarrier occupied by the first radio signal is used for determining the maximum sampling interval length.

6. The method according to claim 1 , further comprising:

transmitting second information;

wherein the second information is used for indicating at least one of a subcarrier spacing of a subcarrier occupied by the first radio signal or the first time window, and the second information is transmitted through the air interface.

7. The method according to claim 1 , wherein each candidate time length in the target candidate time length set is equal to a·N OS μ +d·N u μ , where N OS μ represents a duration in time domain of one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, N OS μ =N u μ +N CP,1 μ , N u μ represents a data time length in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, N CP,1 μ represents a length of a cyclic prefix in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, a represents a non-negative positive integer, d is equal to 0 or d is equal to a negative integral power of 2.

8. A first communication node for wireless communication, comprising:

a first transmitter, to transmit first information, the first information being used for indicating a target time length, the target time length being one candidate time length in a target candidate time length set, the target candidate time length set comprising a positive integer number, greater than 1, of candidate time lengths, and the first information being transmitted through an air interface; and

a second transmitter, to transmit a first radio signal, the first radio signal occupying a first time interval in time domain;

wherein the first time interval belongs to a first time window, a time length of the first time window is greater than a time length of the first time interval, time domain resources in the first time window other than the first time interval are reserved as a gap by a transmitter of the first radio signal, and the target time length is equal to a difference value between the time length of the first time window and the time length of the first time interval; and at least a former one of a subcarrier spacing of a subcarrier occupied by the first radio signal or a position of frequency domain resources occupied by the first radio signal in frequency domain is used for determining the target candidate time length set.

9. The first communication node according to claim 8 , wherein for a given subcarrier spacing of a subcarrier occupied by the first radio signal and a given position of frequency domain resources occupied by the first radio signal in frequency domain, a length of a cyclic prefix in one multicarrier symbol occupied by the first radio signal in time domain is also used for determining the target candidate time length set.

10. The first communication node according to claim 8 , wherein the position of frequency domain resources occupied by the first radio signal in frequency domain is used for determining at least one of a first threshold or a second threshold, the first threshold is equal to a maximum candidate time length in the target candidate time length set, and the second threshold is equal to a minimum candidate time length in the target candidate time length set.

11. The first communication node according to claim 8 , wherein a duration in time domain of one multicarrier symbol among the multicarrier symbols occupied by the first radio signal is equal to a first time length; a data time length in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal is equal to a second time length; any one candidate time length in the target candidate time length set is equal to a summation of K1 time(s) of the first time length plus K2 time(s) of the second time length, K1 is a non-negative integer, and K2 is equal to a difference between 1 and a non-negative integral power of ½; and a subcarrier spacing of a subcarrier occupied by the first radio signal is used for determining the first time length and the second time length.

12. The first communication node according to claim 8 , wherein each candidate time length in the target candidate time length set is equal to a positive integral multiple of a maximum sampling interval length, and a subcarrier spacing of a subcarrier occupied by the first radio signal is used for determining the maximum sampling interval length.

13. The first communication node according to claim 8 , wherein the first transmitter transmits second information, wherein the second information is used for indicating at least one of a subcarrier spacing of a subcarrier occupied by the first radio signal or the first time window, and the second information is transmitted through the air interface.

14. The first communication node according to claim 8 , wherein each candidate time length in the target candidate time length set is equal to a·N OS μ +d·N u μ , where N OS μ represents a duration in time domain of one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, N OS μ =N u μ +N CP,1 μ , N u μ represents a data time length in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, N CP,1 μ represents a length of a cyclic prefix in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, a represents a non-negative positive integer, d is equal to 0 or d is equal to a negative integral power of 2.

15. A second communication node for wireless communication, comprising:

a first receiver, to receive first information, the first information being used for indicating a target time length, the target time length being one candidate time length in a target candidate time length set, the target candidate time length set comprising a positive integer number, greater than 1, of candidate time lengths, and the first information being transmitted through an air interface; and

a second receiver, to receive a first radio signal, the first radio signal occupying a first time interval in time domain;

wherein the first time interval belongs to a first time window, a time length of the first time window is greater than a time length of the first time interval, time domain resources in the first time window other than the first time interval are reserved as a gap by a transmitter of the first radio signal, and the target time length is equal to a difference value between the time length of the first time window and the time length of the first time interval; and at least a former one of a subcarrier spacing of a subcarrier occupied by the first radio signal or a position of frequency domain resources occupied by the first radio signal in frequency domain is used for determining the target candidate time length set.

16. The second communication node according to claim 15 , wherein for a given subcarrier spacing of a subcarrier occupied by the first radio signal and a given position of frequency domain resources occupied by the first radio signal in frequency domain, a length of a cyclic prefix in one multicarrier symbol occupied by the first radio signal in time domain is also used for determining the target candidate time length set.

17. The second communication node according to claim 15 , wherein the position of frequency domain resources occupied by the first radio signal in frequency domain is used for determining at least one of a first threshold or a second threshold, the first threshold is equal to a maximum candidate time length in the target candidate time length set, and the second threshold is equal to a minimum candidate time length in the target candidate time length set.

18. The second communication node according to claim 15 , wherein a duration in time domain of one multicarrier symbol among the multicarrier symbols occupied by the first radio signal is equal to a first time length; a data time length in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal is equal to a second time length; any one candidate time length in the target candidate time length set is equal to a summation of K1 time(s) of the first time length plus K2 time(s) of the second time length, K1 is a non-negative integer, and K2 is equal to a difference between 1 and a non-negative integral power of ½; and a subcarrier spacing of a subcarrier occupied by the first radio signal is used for determining the first time length and the second time length.

19. The second communication node according to claim 15 , wherein each candidate time length in the target candidate time length set is equal to a positive integral multiple of a maximum sampling interval length, and a subcarrier spacing of a subcarrier occupied by the first radio signal is used for determining the maximum sampling interval length.

20. The second communication node according to claim 15 , wherein each candidate time length in the target candidate time length set is equal to a·N OS μ +d·N u μ , where N OS μ represents a duration in time domain of one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, N OS μ =N u μ +N CP,1 μ , N u μ represents a data time length in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, N CP,1 μ represents a length of a cyclic prefix in one multicarrier symbol among the multicarrier symbols occupied by the first radio signal, a represents a non-negative positive integer, d is equal to 0 or d is equal to a negative integral power of 2.