Method and device in a node used for wireless communication

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

receiving a first signaling, the first signaling being used for indicating a first reference power threshold;

receiving first configuration information, wherein the first configuration information comprises a first reference priority used for determining the first reference power threshold;

receiving a second signaling, the second signaling being used for indicating a first power offset; and

performing a first channel measurement to determine by the first node whether a first radio resource can be used for a radio signal transmission; if yes, a first radio signal is transmitted by the first node in the first radio resource; if not, the radio signal transmission is dropped by the first node in the first radio resource;

wherein a first power threshold is used for the first channel measurement; the first power threshold is related to the first reference power threshold; a position of the first radio resource is used for determining whether the first power threshold is related to the first power offset.

2. The method according to claim 1 , comprising:

receiving a third signaling, the third signaling being used for indicating the first power offset out of N power offsets;

wherein the second signaling comprises N pieces of first-type control information, the N pieces of first-type control information respectively being used for indicating the N power offsets, the N is a positive integer greater than 1, the first power offset is one of the N power offsets.

3. The method according to claim 2 , wherein the N pieces of first-type control information respectively correspond to N first-type radio resources, the first radio resource is one of the N first-type radio resources.

4. The method according to claim 2 , wherein the N pieces of first-type control information respectively correspond to N first-type identifiers, a first identifier is one of the N first-type identifiers, the first identifier is used for identifying the first node.

5. A method in a second node for wireless communication, comprising:

transmitting a first signaling to a first node, the first signaling being used for indicating a first reference power threshold;

transmitting a second signaling to the first node, the second signaling being used for indicating a first power offset; wherein the first node performs a first channel measurement to determine whether a first radio resource can be used for a radio signal transmission; and

receiving the first radio signal in the first radio resource when the first node performs the radio signal transmission;

wherein a first power threshold is used for the first channel measurement; the first power threshold is related to the first reference power threshold; and

wherein a position of the first radio resource is used for determining whether the first power threshold is related to the first power offset.

6. The method according to claim 5 , comprising:

transmitting a third signaling, the third signaling being used for indicating the first power offset out of N power offsets;

wherein the second signaling comprises N pieces of first-type control information, the N pieces of first-type control information respectively being used for indicating the N power offsets, the N is a positive integer greater than 1, the first power offset is one of the N power offsets.

7. The method according to claim 6 , wherein the N pieces of first-type control information respectively correspond to N first-type radio resources, the first radio resource is one of the N first-type radio resources.

8. The method according to claim 6 , wherein the N pieces of first-type control information respectively correspond to N first-type identifiers, a first identifier is one of the N first-type identifiers, the first identifier is used for identifying the first node.

9. A first node for wireless communication, comprising:

a first transmitter, arranged for radio signal transmissions; and

a first receiver, receiving a first signaling, the first signaling being used for indicating a first reference power threshold;

wherein the first receiver receives first configuration information comprising a first reference priority, the first reference priority used for determining the first reference power threshold;

wherein the first receiver receives a second signaling, the second signaling being used for indicating a first power offset; and

wherein the first receiver performs a first channel measurement to determine whether a first radio resource can be used for a radio signal transmission; if yes, the first transmitter transmits a first radio signal in the first radio resource; if not, the first transmitter drops the radio signal transmission in the first radio resource;

wherein a first power threshold is used for the first channel measurement; the first power threshold is related to the first reference power threshold; a position of the first radio resource is used for determining whether the first power threshold is related to the first power offset.

10. The first node according to claim 9 , wherein the first receiver receives a third signaling, the third signaling being used for indicating the first power offset out of N power offsets; wherein the second signaling comprises N pieces of first-type control information, the N pieces of first-type control information respectively being used for indicating the N power offsets, the N is a positive integer greater than 1, the first power offset is one of the N power offsets.

11. The first node according to claim 10 , wherein the N pieces of first-type control information respectively correspond to N first-type radio resources, the first radio resource is one of the N first-type radio resources.

12. The first node according to claim 10 , wherein the N pieces of first-type control information respectively correspond to N first-type identifiers, a first identifier is one of the N first-type identifiers, the first identifier is used for identifying the first node.

13. A second node for wireless communication, comprising:

a second transmitter, transmitting a first signaling to a first node, the first signaling being used for indicating a first reference power threshold; and

a second receiver, coupled to the second transmitter, arranged for radio reception;

wherein the second transmitter transmits a second signaling to the first node, the second signaling being used for indicating a first power offset;

wherein the first node performs a first channel measurement to determine whether a first radio resource can be used for a radio signal transmission;

wherein a first power threshold is used for the first channel measurement;

wherein the first power threshold is related to the first reference power threshold;

wherein a position of the first radio resource is used for determining whether the first power threshold is related to the first power offset; and

wherein the second receiver receives the first radio signal in the first radio resource.

14. The second node according to claim 13 , wherein the second transmitter transmits a third signaling, the third signaling being used for indicating the first power offset out of N power offsets; wherein the second signaling comprises N pieces of first-type control information, the N pieces of first-type control information respectively being used for indicating the N power offsets, the N is a positive integer greater than 1, the first power offset is one of the N power offsets.

15. The second node according to claim 14 , wherein the N pieces of first-type control information respectively correspond to N first-type radio resources, the first radio resource is one of the N first-type radio resources.

16. The second node according to claim 14 , wherein the N pieces of first-type control information respectively correspond to N first-type identifiers, a first identifier is one of the N first-type identifiers, the first-type identifier is used for identifying the first node.