Method and device in a node used for wireless communication

1. A first node for wireless communications, comprising:

a first receiver, receiving first information, the first information being used for determining a target carrier;

a second receiver, detecting a first signaling in a first candidate resource set; and

a first transceiver, when the first signaling is detected, operating a first signal in a first carrier, and the first signaling being used for determining time-frequency resources occupied by the first signal in the first carrier;

wherein the operating action is receiving, or, the operating action is transmitting; the first signaling carries a first identifier, and the first identifier is used for identifying the first carrier; the first candidate resource set comprises a positive integer number of candidate resource group(s), and the first signaling occupies a candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency-resource pool, and the target time-frequency-resource pool comprises time-frequency resources other than a candidate resource group comprised in the first candidate resource set; frequency-domain resources occupied by the target time-frequency-resource pool belong to the target carrier; a target identifier is a non-negative integer, which is used for determining the first candidate resource set out of the target time-frequency-resource pool; the target time-frequency-resource pool is one of a first time-frequency-resource pool or a second time-frequency-resource pool; whether the target time-frequency-resource pool is the same as the first time-frequency-resource pool is used for determining the target identifier out of a first integer and a second integer; the first integer is not equal to the second integer, and the first integer and the second integer are both non-negative integers; the target time-frequency-resource pool is a Control Resource Set (CORESET); the first time-frequency-resource pool is a CORESET; the second time-frequency-resource pool is a CORESET; a physical layer channel carrying the first signaling is a PDCCH; the first signaling is a DL Grant and the operating action is receiving, or the first signaling is a UL Grant, and the operating action is transmitting.

2. The first node according to claim 1 , wherein the first receiver receives second information; the second information is used for indicating the first integer and the second integer; the first integer and the second integer are respectively associated with the first time-frequency-resource pool and the second time-frequency-resource pool.

3. The first node according to claim 1 , wherein the target carrier is a Secondary Component Carrier (SCC), and the target carrier can be used for scheduling a Primary Component Carrier (PCC).

4. The first node according to claim 1 , wherein time-frequency resources occupied by the first time-frequency-resource pool and time-frequency resources occupied by the second time-frequency-resource pool are orthogonal.

5. The first node according to claim 2 , wherein the second information and the first information belong to two different fields in one signaling.

6. The first node according to claim 1 , wherein frequency-domain resources occupied by a signal carrying the first information belong to a second carrier, the first information is used for determining a first index, the first index being an index of the target carrier, the first information is used for determining that the target carrier is different from the second carrier, and the target carrier cross-carrier schedules the second carrier.

7. The first node according to claim 1 , wherein the first receiver receives third information; the third information is used for determining the target time-frequency-resource pool and a number of candidate resource group(s) comprised in the first candidate resource set.

8. The first node according to claim 1 , wherein the first candidate resource set comprises K1 candidate resource groups, any of the K1 candidate resource groups occupies a positive integer number of CCE(s), and the target identifier is used for determining position(s) of a positive integer number of CCE(s) occupied by any of the K1 candidate resource groups out of the target time-frequency-resource pool;

Wherein, K1 is a positive integer.

9. The first node according to claim 1 , wherein a carrier occupied by a Primary Cell (PCell) of the first node is the first carrier, and the target carrier corresponds to a Secondary Cell (SCell) of the first node.

10. The first node according to claim 1 , wherein the first carrier is equal to the target carrier, the first integer is equal to 0, and the second integer is greater than 0.

11. The first node according to claim 1 , wherein a ServCellId employed by the first carrier is equal to 0, and a ServCellId employed by the target carrier is greater than 0.

12. The first node according to claim 1 , wherein the target time-frequency-resource pool is the same as the first time-frequency-resource pool, the target identifier is equal to the first integer; or the target time-frequency-resource pool is the same as the second time-frequency-resource pool, the target identifier is equal to the second integer.

13. The first node according to any of claim 1 , wherein the first time-frequency-resource pool and the second time-frequency-resource pool respectively belong to a first slot set and a second slot set, the first slot set comprises M1 slots, the second slot set comprises M2 slots, M1 is a positive integer greater than 1, and M2 is a positive integer greater than 1, any of the M1 slots and any of the M2 slots are orthogonal in time domain.

14. The first node according to any of claim 1 , wherein the first time-frequency-resource pool and the second time-frequency-resource pool respectively belong to a first sub-carrier set and a second sub-carrier set, the first sub-carrier set comprises M3 sub-carriers, the second sub-carrier set comprises M4 sub-carriers, M3 is a positive integer greater than 1, M4 is a positive integer greater than 1, and any of the M3 sub-carriers and any of the M4 sub-carriers are orthogonal in frequency domain.

15. The first node according to any of claim 1 , wherein the first integer is configured information specific to a CORESET, and the second integer is configured information specific to a CORESET.

16. The first node according to any of claim 1 , wherein the target carrier is an SCC, and the target carrier can schedule a PCC and an SCC simultaneously.

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

receiving first information, the first information being used for determining a target carrier;

detecting a first signaling in a first candidate resource set; and

when the first signaling is detected, operating a first signal in a first carrier, and the first signaling being used for determining time-frequency resources occupied by the first signal in the first carrier;

wherein the operating action is receiving, or, the operating action is transmitting; the first signaling carries a first identifier, and the first identifier is used for identifying the first carrier; the first candidate resource set comprises a positive integer number of candidate resource group(s), and the first signaling occupies a candidate resource group in the first candidate resource set; any candidate resource group in the first candidate resource set belongs to a target time-frequency-resource pool, and the target time-frequency-resource pool comprises time-frequency resources other than a candidate resource group comprised in the first candidate resource set; frequency-domain resources occupied by the target time-frequency-resource pool belong to the target carrier; a target identifier is a non-negative integer, which is used for determining the first candidate resource set out of the target time-frequency-resource pool; the target time-frequency-resource pool is one of a first time-frequency-resource pool or a second time-frequency-resource pool; whether the target time-frequency-resource pool is the same as the first time-frequency-resource pool is used for determining the target identifier out of a first integer and a second integer; the first integer is not equal to the second integer, and the first integer and the second integer are both non-negative integers; the target time-frequency-resource pool is a Control Resource Set (CORESET); the first time-frequency-resource pool is a CORESET; the second time-frequency-resource pool is a CORESET; a physical layer channel carrying the first signaling is a PDCCH; the first signaling is a DL Grant and the operating action is receiving, or the first signaling is a UL Grant, and the operating action is transmitting.

18. The method in a first node according to claim 17 , wherein time-frequency resources occupied by the first time-frequency-resource pool and time-frequency resources occupied by the second time-frequency-resource pool are orthogonal.