METHOD AND DEVICE IN NODES USED FOR WIRELESS COMMUNICATION

1 . A first node for wireless communications, comprising:

a first receiver, receiving a first information group and a target bit block set, the first information group used to determine X1 control resources, X1 being a positive integer greater than 1, the target bit block set comprising at least one bit block; and

a first transmitter, transmitting a first PUSCH in a first resource pool;

wherein the X1 control resources are respectively reserved for X1 PUCCHs, at least one of the X1 PUCCHs being a PUCCH for NACK-only feedback, and any bit block in the target bit block set comprises at least one bit; when there exists one control resource among the X1 control resources that is overlapping with the first resource pool in time domain, the first PUSCH is used to transmit ACK/NACK feedback for bit block(s) in the target bit block set; when each of the X1 control resources is orthogonal to the first resource pool in time domain, at most X2 PUCCH(s) among the X1 PUCCHs is(are) used to transmit HARQ-ACK feedback for the bit block(s) in the target bit block set, X2 being a positive integer less than X1.

2 . The first node according to claim 1 , characterized in that X2 is equal to 1, a control resource is a PUCCH resource, and a piece of information in the first information group is an RRC signaling, and a bit block in the target bit block set comprises a transport block (TB).

3 . The first node according to claim 2 , characterized in that when each of the X1 control resources is orthogonal to the first resource pool in time domain: when at least one bit block in the target bit block set is not correctly decoded: only one PUCCH of the X1 PUCCHs is used to transmit a NACK, and a decoding result of the bit block(s) in the target bit block set is used to determine which one of the X1 PUCCHs is used to transmit the NACK.

4 . The first node according to claim 3 , characterized in that when each of the X1 control resources is orthogonal to the first resource pool in time domain: when each of the bit block(s) in the target bit block set is correctly decoded: the first node does not transmit HARQ-ACK feedback for the target bit block set in the X1 PUCCHs.

5 . The first node according to claim 3 , characterized in that at least one bit block in the target bit block set is not correctly decoded, and the decoding result of the bit block(s) in the target bit block set is one of X1 different decoding results, the X1 different decoding results respectively corresponding to the X1 PUCCHs; when each of the X1 control resources is orthogonal to the first resource pool in time domain: a PUCCH corresponding to the decoding result of the bit block(s) in the target bit block set among the X1 PUCCHs is used to transmit a NACK.

6 . The first node according to claim 2 , characterized in that at least one bit block in the target bit block set is not correctly decoded, the decoding result of the bit block(s) in the target bit block set is one of X3 different decoding results, each of the X3 different decoding results corresponding to one of the X1 PUCCHs, X3 being no less than X1; when each of the X1 control resources is orthogonal to the first resource pool in time domain: a PUCCH corresponding to the decoding result of the bit block(s) in the target bit block set among the X1 PUCCHs is used to transmit HARQ-ACK feedback for the bit block(s) in the target bit block set.

7 . The first node according to claim 6 , characterized in that X3 is equal to 3, the X3 different decoding results being respectively denoted by {ACK, NACK}, {NACK, ACK}, and {NACK, NACK};

or, characterized in that X3 is equal to 7, the X3 different decoding results being respectively denoted by {ACK, ACK, NACK}, {ACK, NACK, ACK}, {ACK, NACK, NACK}, {NACK, ACK, NACK}, {NACK, NACK, ACK}, {NACK, NACK, NACK}, and {NACK, ACK, ACK}.

8 . A second node for wireless communications, comprising:

a second transmitter, transmitting a first information group and a target bit block set, the first information group used to determine X1 control resources, X1 being a positive integer greater than 1, the target bit block set comprising at least one bit block; and

a second receiver, receiving a first PUSCH in a first resource pool;

wherein the X1 control resources are respectively reserved for X1 PUCCHs, at least one of the X1 PUCCHs being a PUCCH for NACK-only feedback, and any bit block in the target bit block set comprises at least one bit; when there exists one control resource among the X1 control resources that is overlapping with the first resource pool in time domain, the second receiver receives ACK/NACK feedback for bit block(s) in the target bit block set in the first PUSCH; when each of the X1 control resources is orthogonal to the first resource pool in time domain, the second receiver performs signal detection in at least one PUCCH among the X1 PUCCHs.

9 . The second node according to claim 8 , characterized in that X2 is equal to 1, a control resource is a PUCCH resource, and a piece of information in the first information group is an RRC signaling, and a bit block in the target bit block set comprises a transport block (TB).

10 . The second node according to claim 9 , characterized in that when each of the X1 control resources is orthogonal to the first resource pool in time domain: when at least one bit block in the target bit block set is not correctly decoded: only one PUCCH of the X1 PUCCHs is used to transmit a NACK, and a decoding result of the bit block(s) in the target bit block set is used to determine which one of the X1 PUCCHs is used to transmit the NACK.

11 . The second node according to claim 10 , characterized in that when any of the X1 control resources is overlapping with the first resource pool in time domain: the second node does not perform signal detection in all of the X1 PUCCHs.

12 . The second node according to claim 11 , characterized in that the X1 control resources are configured in a same PUCCH-Config.

13 . The second node according to claim 11 , characterized in that the X1 control resources belong to a same PUCCH resource set with pucch-ResourceSetId equal to 0.

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

receiving a first information group and a target bit block set, the first information group used to determine X1 control resources, X1 being a positive integer greater than 1, the target bit block set comprising at least one bit block; and

transmitting a first PUSCH in a first resource pool;

wherein the X1 control resources are respectively reserved for X1 PUCCHs, at least one of the X1 PUCCHs being a PUCCH for NACK-only feedback, and any bit block in the target bit block set comprises at least one bit; when there exists one control resource among the X1 control resources that is overlapping with the first resource pool in time domain, the first PUSCH is used to transmit ACK/NACK feedback for bit block(s) in the target bit block set; when each of the X1 control resources is orthogonal to the first resource pool in time domain, at most X2 PUCCH(s) among the X1 PUCCHs is(are) used to transmit HARQ-ACK feedback for the bit block(s) in the target bit block set, X2 being a positive integer less than X1.

15 . The method in the first node according to claim 14 , characterized in that X2 is equal to 1, a control resource is a PUCCH resource, and a piece of information in the first information group is an RRC signaling, and a bit block in the target bit block set comprises a transport block (TB).

16 . The method in the first node according to claim 15 , characterized in that when each of the X1 control resources is orthogonal to the first resource pool in time domain: when at least one bit block in the target bit block set is not correctly decoded: only one PUCCH of the X1 PUCCHs is used to transmit a NACK, and a decoding result of the bit block(s) in the target bit block set is used to determine which one of the X1 PUCCHs is used to transmit the NACK.

17 . The method in the first node according to claim 16 , characterized in that when each of the X1 control resources is orthogonal to the first resource pool in time domain: when each of the bit block(s) in the target bit block set is correctly decoded: the first node does not transmit HARQ-ACK feedback for the target bit block set in the X1 PUCCHs.

18 . The method in the first node according to claim 16 , characterized in that at least one bit block in the target bit block set is not correctly decoded, and the decoding result of the bit block(s) in the target bit block set is one of X1 different decoding results, the X1 different decoding results respectively corresponding to the X1 PUCCHs; when each of the X1 control resources is orthogonal to the first resource pool in time domain: a PUCCH corresponding to the decoding result of the bit block in the target bit block set among the X1 PUCCHs is used to transmit a NACK.

19 . The method in the first node according to claim 15 , characterized in that at least one bit block in the target bit block set is not correctly decoded, the decoding result of the bit block(s) in the target bit block set is one of X3 different decoding results, each of the X3 different decoding results corresponding to one of the X1 PUCCHs, X3 being no less than X1; when each of the X1 control resources is orthogonal to the first resource pool in time domain: a PUCCH corresponding to the decoding result of the bit block(s) in the target bit block set among the X1 PUCCHs is used to transmit HARQ-ACK feedback for the bit block(s) in the target bit block set.

20 . The method in the first node according to claim 19 , characterized in that X3 is equal to 3, the X3 different decoding results being respectively denoted by {ACK, NACK}, {NACK, ACK}, and {NACK, NACK};

or, characterized in that X3 is equal to 7, the X3 different decoding results being respectively denoted by {ACK, ACK, NACK}, {ACK, NACK, ACK}, {ACK, NACK, NACK}, {NACK, ACK, NACK}, {NACK, NACK, ACK}, {NACK, NACK, NACK}, and {NACK, ACK, ACK}.