Method and device in communication node used for wireless communication

1. A first communication node for wireless communications, comprising:

a first receiver, receiving first information and second information; and

a first transmitter, transmitting a first radio signal, a Subcarrier Spacing (SCS) of a subcarrier occupied by the first radio signal in frequency domain being equal to a first SCS;

wherein a sum of a first timing adjustment and a second timing adjustment is used to determine a transmission timing for the first radio signal, and the first timing adjustment is used to determine a transmission timing for a radio signal transmitted earlier than the first radio signal; the second timing adjustment is equal to a sum of a first sub-adjustment and a second sub-adjustment, the first information is used to determine the first sub-adjustment, and the second information is used to determine the second sub-adjustment; for the first SCS, an absolute value of the first sub-adjustment is equal to a time length of one or multiple multicarrier symbols, and a minimum step-size corresponding to the second sub-adjustment is less than a time length of one multicarrier symbol.

2. The first communication node according to claim 1 , wherein the first receiver receives a first signaling, and the first signaling is used to determine a first time-domain resource; wherein for the first SCS, a time length of one first-type multicarrier symbol is equal to a first time length, a time length of one second-type multicarrier symbol is equal to a second time length, and the first time length is not equal to the second time length; an absolute value of the first sub-adjustment is equal to a sum of K1 times the first time length and K2 times the second time length, and the first information is used to indicate a sum of K1 and K2; a position of the first time-domain resource in time domain is used to determine K2, K1 being a non-negative integer, K2 being a non-negative integer.

3. The first communication node according to claim 1 , wherein the second sub-adjustment is one of X candidate sub-adjustments, X being a positive integer greater than 1; the second information is used to determine the second sub-adjustment out of the X candidate sub-adjustments, or the second information is used to determine the X candidate sub-adjustments.

4. The first communication node according to claim 1 , wherein the first receiver receives third information; the first transmitter transmits a first characteristic sequence; wherein the third information is used to determine the first timing adjustment, or the third information is used to determine a transmission timing for the first characteristic sequence and the first timing adjustment; the first characteristic sequence is used for random access.

5. The first communication node according to claim 1 , wherein the first transmitter transmits a second radio signal; wherein the first timing adjustment is used to determine a transmission timing for the second radio signal, or a sum of the first timing adjustment and a third timing adjustment is used to determine a transmission timing for the second radio signal; the third timing adjustment is equal to a sum of the first sub-adjustment and a third sub-adjustment, and the third sub-adjustment is configurable; a start time for transmitting the second radio signal is earlier than a start time for transmitting the first radio signal.

6. The first communication node according to claim 1 , wherein a first timing offset is used to determine the first timing adjustment, an absolute value of the first timing offset is not greater than an absolute value of the first timing adjustment, a duplex mode of a cell where a transmission of the first radio signal occurs and a frequency range to which frequency-domain resources occupied by the first radio signal belong are used to determine the first timing offset.

7. The first communication node according to claim 1 , wherein the first receiver receives a second signaling; wherein the second signaling is used to determine the first SCS.

8. A second communication node for wireless communications, comprising:

a second transmitter, transmitting first information and second information; and

a second receiver, receiving a first radio signal, an SCS of a subcarrier occupied by the first radio signal in frequency domain being equal to a first SCS;

wherein a sum of a first timing adjustment and a second timing adjustment is used to determine a transmission timing for the first radio signal, and the first timing adjustment is used to determine a transmission timing for a radio signal transmitted earlier than the first radio signal; the second timing adjustment is equal to a sum of a first sub-adjustment and a second sub-adjustment, the first information is used to determine the first sub-adjustment, and the second information is used to determine the second sub-adjustment; for the first SCS, an absolute value of the first sub-adjustment is equal to a time length of one or multiple multicarrier symbols, and a minimum step-size corresponding to the second sub-adjustment is less than a time length of one multicarrier symbol.

9. The second communication node according to claim 8 , wherein the second transmitter transmits a first signaling, and the first signaling is used to determine a first time-domain resource; for the first SCS, a time length of one first-type multicarrier symbol is equal to a first time length, a time length of one second-type multicarrier symbol is equal to a second time length, and the first time length is not equal to the second time length; an absolute value of the first sub-adjustment is equal to a sum of K1 times the first time length and K2 times the second time length, and the first information is used to indicate a sum of K1 and K2; a position of the first time-domain resource in time domain is used to determine K2, K1 being a non-negative integer, K2 being a non-negative integer.

10. The second communication node according to claim 8 , wherein the second sub-adjustment is one of X candidate sub-adjustments, X being a positive integer greater than 1; the second information is used to determine the second sub-adjustment out of the X candidate sub-adjustments, or the second information is used to determine the X candidate sub-adjustments.

11. The second communication node according to claim 8 , wherein the second transmitter transmits third information; a second receiver receives a first characteristic sequence; wherein the third information is used to determine the first timing adjustment, or the third information is used to determine a transmission timing for the first characteristic sequence and the first timing adjustment; the first characteristic sequence is used for random access.

12. The second communication node according to claim 8 , wherein the second receiver receives a second radio signal; wherein the first timing adjustment is used to determine a transmission timing for the second radio signal, or a sum of the first timing adjustment and a third timing adjustment is used to determine a transmission timing for the second radio signal; the third timing adjustment is equal to a sum of the first sub-adjustment and a third sub-adjustment, and the third sub-adjustment is configurable; a start time for transmitting the second radio signal is earlier than a start time for transmitting the first radio signal.

13. The second communication node according to claim 8 , wherein a first timing offset is used to determine the first timing adjustment, an absolute value of the first timing offset is not greater than an absolute value of the first timing adjustment, a duplex mode of a cell where a transmission of the first radio signal occurs and a frequency range to which frequency-domain resources occupied by the first radio signal belong are used to determine the first timing offset.

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

receiving first information and second information; and

transmitting a first radio signal, an SCS of a subcarrier occupied by the first radio signal in frequency domain being equal to a first SCS;

wherein a sum of a first timing adjustment and a second timing adjustment is used to determine a transmission timing for the first radio signal, and the first timing adjustment is used to determine a transmission timing for a radio signal transmitted earlier than the first radio signal; the second timing adjustment is equal to a sum of a first sub-adjustment and a second sub-adjustment, the first information is used to determine the first sub-adjustment, and the second information is used to determine the second sub-adjustment; for the first SCS, an absolute value of the first sub-adjustment is equal to a time length of one or multiple multicarrier symbols, and a minimum step-size corresponding to the second sub-adjustment is less than a time length of one multicarrier symbol.

15. The method in a first communication node according to claim 14 , comprising:

receiving a first signaling, the first signaling being used to determine a first time-domain resource;

wherein for the first SCS, a time length of one first-type multicarrier symbol is equal to a first time length, a time length of one second-type multicarrier symbol is equal to a second time length, and the first time length is not equal to the second time length; an absolute value of the first sub-adjustment is equal to a sum of K1 times the first time length and K2 times the second time length, and the first information is used to indicate a sum of K1 and K2; a position of the first time-domain resource in time domain is used to determine K2, K1 being a non-negative integer, K2 being a non-negative integer.

16. The method in a first communication node according to claim 14 , wherein the second sub-adjustment is one of X candidate sub-adjustments, X being a positive integer greater than 1; the second information is used to determine the second sub-adjustment out of the X candidate sub-adjustments, or the second information is used to determine the X candidate sub-adjustments.

17. The method in a first communication node according to claim 14 , comprising:

receiving third information; and

transmitting a first characteristic sequence;

wherein the third information is used to determine the first timing adjustment, or the third information is used to determine a transmission timing for the first characteristic sequence and the first timing adjustment; the first characteristic sequence is used for random access.

18. The method in a first communication node according to claim 14 , comprising:

transmitting a second radio signal;

wherein the first timing adjustment is used to determine a transmission timing for the second radio signal, or a sum of the first timing adjustment and a third timing adjustment is used to determine a transmission timing for the second radio signal; the third timing adjustment is equal to a sum of the first sub-adjustment and a third sub-adjustment, and the third sub-adjustment is configurable; a start time for transmitting the second radio signal is earlier than a start time for transmitting the first radio signal.

19. The method in a first communication node according to claim 14 , wherein a first timing offset is used to determine the first timing adjustment, an absolute value of the first timing offset is not greater than an absolute value of the first timing adjustment, a duplex mode of a cell where a transmission of the first radio signal occurs and a frequency range to which frequency-domain resources occupied by the first radio signal belong are used to determine the first timing offset.

20. The method in a first communication node according to claim 14 , comprising:

receiving a second signaling;

wherein the second signaling is used to determine the first SCS.