Method and device in a node used for wireless communication

1. A first node for wireless communications, comprising:

a first receiver, which receives a first signaling;

a second receiver, which performs a first channel sensing operation over a first subband; and

a first transmitter, which transmits a first signal;

wherein the first signaling comprises first indication information, the first indication information indicating an Rx parameter of the first channel sensing operation; the first channel sensing operation is used for determining channel occupancy information, and the channel occupancy information is used for determining whether the first subband can be used by a transmitter of the first signaling for signal transmission; the first signal indicates the channel occupancy information; the first signaling is used for determining Q1 candidate resource groups, Q1 being a positive integer greater than 1; a first resource group is one of the Q1 candidate resource groups, and the first signal occupies the first resource group, the first resource group being related to the first indication information; the first indication information indicates multiple Rx parameters of the first channel sensing operation, and multiple candidate resource groups are respectively associated with the multiple Rx parameters of the first channel sensing operation; the first resource group is associated with one of the multiple Rx parameters of the first channel sensing operation, one of the multiple Rx parameters of the first channel sensing operation comprises a TCI (Transmission Configuration Indictor) state.

2. The first node according to claim 1 , wherein transmission of the first signal indicates the channel occupancy information, the channel occupancy information comprising whether the first subband is idle;

or the channel occupancy information is a piece of UCI (Uplink Control Information), and the first signal comprises a physical uplink control channel (PUCCH).

3. The first node according to claim 1 , wherein the first signaling comprises a first index, the first index being used for indicating a first device group, and the first node belongs to the first device group; the first device group comprises multiple nodes, and the multiple nodes employ resources overlapping with the first resource group for transmitting a feedback signal.

4. The first node according to claim 1 , wherein the first receiver receives a second signaling, the second signaling comprising Q2 piece(s) of transmission configuration information, Q2 being a positive integer, and any one of the Q2 piece(s) of transmission configuration information is used for indicating an Rx parameter of the first channel sensing operation, and the first resource group is related to the second signaling.

5. The first node according to claim 4 , wherein the first receiver performs the first channel sensing operation based on a target Rx parameter, the target Rx parameter belonging to a target Rx parameter set, and the target Rx parameter set comprising an overlap between the Rx parameters indicated by the first signaling and the Rx parameters indicated by the second signaling.

6. The first node according to claim 1 , wherein the first signal comprises Q3 repetitions of a first sub-signal, Q3 being a positive integer greater than 1.

7. A second node for wireless communications, comprising:

a third receiver, which performs a second channel sensing operation over a first subband;

a second transmitter, which transmits a first signaling; and

a fourth receiver, which receives a first signal;

wherein the first signaling comprises first indication information, the first indication information indicating an Rx parameter of a first channel sensing operation; the first channel sensing operation is used for determining channel occupancy information, and the channel occupancy information is used for determining whether the first subband can be used by the second node for signal transmission; the first signal indicates the channel occupancy information; the first signaling is used for determining Q1 candidate resource groups, Q1 being a positive integer greater than 1; a first resource group is one of the Q1 candidate resource groups, and the first signal occupies the first resource group, the first resource group being related to the first indication information; the first indication information indicates multiple Rx parameters of the first channel sensing operation, and multiple candidate resource groups are respectively associated with the multiple Rx parameters of the first channel sensing operation; the first resource group is associated with one of the multiple Rx parameters of the first channel sensing operation, one of the multiple Rx parameters of the first channel sensing operation comprises a TCI (Transmission Configuration Indictor) state.

8. The second node according to claim 7 , wherein transmission of the first signal indicates the channel occupancy information, the channel occupancy information comprising whether the first subband is idle;

or the channel occupancy information is a piece of UCI (Uplink Control Information), and the first signal comprises a physical uplink control channel (PUCCH).

9. The second node according to claim 7 , wherein the first signaling comprises a first index, the first index being used for indicating a first device group, and the first node belongs to the first device group; the first device group comprises multiple nodes, and the multiple nodes employ resources overlapping with the first resource group for transmitting a feedback signal.

10. The second node according to claim 7 , wherein the second transmitter transmits a second signaling, the second signaling comprising Q2 piece(s) of transmission configuration information, Q2 being a positive integer, and any one of the Q2 piece(s) of transmission configuration information is used for indicating an Rx parameter of the first channel sensing operation, and the first resource group is related to the second signaling.

11. The second node according to claim 7 , wherein the first signal comprises Q3 repetitions of a first sub-signal, Q3 being a positive integer greater than 1.

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

receiving a first signaling;

performing a first channel sensing operation over a first subband; and

transmitting a first signal;

wherein the first signaling comprises first indication information, the first indication information indicating Rx parameters of the first channel sensing operation; the first channel sensing operation is used for determining channel occupancy information, and the channel occupancy information is used for determining whether the first subband can be used by a transmitter of the first signaling for signal transmission; the first signal indicates the channel occupancy information; the first signaling is used for determining Q1 candidate resource groups, Q1 being a positive integer greater than 1; a first resource group is one of the Q1 candidate resource groups, and the first signal occupies the first resource group, the first resource group being related to the first indication information; the first indication information indicates multiple Rx parameters of the first channel sensing operation, and multiple candidate resource groups are respectively associated with the multiple Rx parameters of the first channel sensing operation; the first resource group is associated with one of the multiple Rx parameters of the first channel sensing operation, one of the multiple Rx parameters of the first channel sensing operation comprises a TCI (Transmission Configuration Indictor) state.

13. The method in the first node according to claim 12 , wherein transmission of the first signal is used for indicating the channel occupancy information, the channel occupancy information comprising whether the first subband is idle; or the channel occupancy information is a piece of UCI (Uplink Control Information), and the first signal comprises a physical uplink control channel (PUCCH).

14. The method in the first node according to claim 12 , wherein the first signaling comprises a first index, the first index being used for indicating a first device group, and the first node belongs to the first device group; the first device group comprises multiple nodes, and the multiple nodes employ resources overlapping with the first resource group for transmitting a feedback signal.

15. The method in the first node according to claim 12 , further comprising: receiving a second signaling; the second signaling comprises Q2 piece(s) of transmission configuration information, Q2 being a positive integer, and any one of the Q2 piece(s) of transmission configuration information is used for indicating an Rx parameter of the first channel sensing operation, and the first resource group is related to the second signaling.

16. The method in the first node according to claim 15 , wherein the first channel sensing operation is performed based on a target Rx parameter, the target Rx parameter belonging to a target Rx parameter set, and the target Rx parameter set comprising an overlap between the Rx parameters indicated by the first signaling and the Rx parameters indicated by the second signaling.

17. The method in the first node according to claim 12 , wherein the first signal comprises Q3 repetitions of a first sub-signal, Q3 being a positive integer greater than 1.