Method and device for use in wireless communication nodes related to sidelink

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

receiving first information;

receiving a first signaling;

transmitting X first-type radio signals, X being a positive integer greater than 1; and

transmitting second information, the second information comprising Y first-type information bit(s), Y being a positive integer;

wherein the first information is used to determine the second information, and the first signaling is used to determine scheduling information of at least one of the X first-type radio signals; the second information comprising multiple information bits, and only the Y first-type information bit(s) of the multiple information bits comprised in the second information is(are) used to indicate whether at least one of the X first-type radio signals is correctly received; a target receiver of any of the X first-type radio signals is different from a target receiver of the second information; the scheduling information comprises at least one of occupied time-frequency resources, an adopted Modulation and Coding Scheme (MCS) or an adopted Redundancy Version (RV); the first information, the first signaling and the second information are all transmitted via a first-type air interface; when an information bit other than the Y first-type information bit(s) is comprised in the second information, the first signaling is used to indicate a first time-frequency-resource set, a time-domain position of time-domain resources in the first time-frequency-resource set is used to determine a distribution pattern of the Y first-type information bit(s) in the multiple information bits comprised in the second information.

2. The method according to claim 1 , comprising:

determining the second information;

wherein the first information is used to determine the mapping between the Y first-type information bit(s) in the second information and the X first-type radio signals, or the first information is used to determine the Y, or the first information is used to determine the mapping between the Y first-type information bit(s) in the second information and the X first-type radio signals as well as the Y.

3. The method according to claim 1 , wherein the Y first-type information bit(s) is(are) divided into Y 1 bit-group(s), at least one of the Y 1 bit-group(s) is used to indicate whether at least one of the X first-type radio signals is correctly received, or at least one of the Y 1 bit-group(s) is used to indicate whether at least one of the X first-type radio signals is not correctly received.

4. The method according to claim 1 , wherein a first bit block is used to generate any of the X first-type radio signals, and the first bit block comprises at least one bit; RVs of the X first-type radio signals are the same, or a time-domain position of time-domain resources occupied by a first-type radio signal of the X first-type radio signals is used to determine an RV of the first-type radio signal.

5. The method according to claim 1 , wherein X bit blocks are respectively used to generate the X first-type radio signals, and any of the X bit blocks comprises at least one bit; the X first-type radio signals respectively correspond to X HARQ processes, the X bit blocks respectively belong to the X HARQ processes, a first HARQ process is one of the X HARQ processes, a time-domain position of time-domain resources occupied by a first-type radio signal of the X first-type radio signals corresponding to the first HARQ process is used to determine a signature identity of the first HARQ process.

6. The method according to claim 1 , comprising:

receiving third information;

wherein a transmitter of the third information is the same as a target receiver of at least one of the X first-type radio signals; the third information is used to indicate whether at least one of the X first-type radio signals is correctly received, or the third information is used to indicate whether at least one of the X first-type radio signals is not correctly received; the third information is used to generate the second information.

7. The method according to claim 1 , also comprising:

transmitting a second signaling;

wherein the second signaling is used to indicate the scheduling information of at least one of the X first-type radio signals, and the first signaling is used to determine information carried by the second signaling; a target receiver of the second signaling is the same as a target receiver of at least one of the X first-type radio signals, the second signaling is transmitted via a second-type air interface, and the second-type air interface is different from the first-type air interface.

8. A method in a second node for wireless communications, comprising:

transmitting first information;

transmitting a first signaling; and

receiving second information, the second information comprising Y first-type information bit(s), Y being a positive integer;

wherein the first information is used to determine the second information, and the first signaling is used to determine scheduling information of at least one of X first-type radio signals, and the X first-type radio signals are transmitted by a target receiver of the first signaling; the second information comprising multiple information bits, and only the Y first-type information bit(s) of the multiple information bits comprised in the second information is(are) used to indicate whether at least one of the X first-type radio signals is correctly received; a target receiver of any of the X first-type radio signals is different from a target receiver of the second information; the scheduling information comprises at least one of occupied time-frequency resources, an adopted MCS or an adopted RV; the first information, the first signaling and the second information are all transmitted via a first-type air interface; when an information bit other than the Y first-type information bit(s) is comprised in the second information, the first signaling is used to indicate a first time-frequency-resource set, a time-domain position of time-domain resources in the first time-frequency-resource set is used to determine a distribution pattern of the Y first-type information bit(s) in the multiple information bits comprised in the second information.

9. The method according to claim 8 , wherein the Y first-type information bit(s) is(are) divided into Y 1 bit-group(s), at least one of the Y 1 bit-group(s) is used to indicate whether at least one of the X first-type radio signals is correctly received, or at least one of the Y 1 bit-group(s) is used to indicate whether at least one of the X first-type radio signals is not correctly received.

10. A first node for wireless communications, comprising:

a first receiver, which receives first information;

a second receiver, which receives a first signaling;

a first transmitter, which transmits X first-type radio signals, X being a positive integer greater than 1; and

a second transmitter, which transmits second information, the second information comprising Y first-type information bit(s), Y being a positive integer;

wherein the first information is used to determine the second information, and the first signaling is used to determine scheduling information of at least one of the X first-type radio signals; the second information comprising multiple information bits, and only the Y first-type information bit(s) of the multiple information bits comprised in the second information is(are) used to indicate whether at least one of the X first-type radio signals is correctly received; a target receiver of any of the X first-type radio signals is different from a target receiver of the second information; the scheduling information comprises at least one of occupied time-frequency resources, an adopted MCS or an adopted RV; the first information, the first signaling and the second information are all transmitted via a first-type air interface; when an information bit other than the Y first-type information bit(s) is comprised in the second information, the first signaling is used to indicate a first time-frequency-resource set, a time-domain position of time-domain resources in the first time-frequency-resource set is used to determine a distribution pattern of the Y first-type information bit(s) in the multiple information bits comprised in the second information.

11. The first node according to claim 10 , comprising:

the first transmitter, which determines the second information;

wherein the first information is used to determine the mapping between the Y first-type information bit(s) in the second information and the X first-type radio signals, or the first information is used to determine the Y, or the first information is used to determine the mapping between the Y first-type information bit(s) in the second information and the X first-type radio signals as well as the Y.

12. The first node according to claim 10 , wherein the Y first-type information bit(s) is(are) divided into Y 1 bit-group(s), at least one of the Y 1 bit-group(s) is used to indicate whether at least one of the X first-type radio signals is correctly received, or at least one of the Y 1 bit-group(s) is used to indicate whether at least one of the X first-type radio signals is not correctly received.

13. The first node according to claim 10 , wherein a first bit block is used to generate any of the X first-type radio signals, and the first bit block comprises at least one bit; RVs of the X first-type radio signals are the same, or a time-domain position of time-domain resources occupied by a first-type radio signal of the X first-type radio signals is used to determine an RV of the first-type radio signal.

14. The first node according to claim 10 , wherein X bit blocks are respectively used to generate the X first-type radio signals, and any of the X bit blocks comprises at least one bit; the X first-type radio signals respectively correspond to X HARQ processes, the X bit blocks respectively belong to the X HARQ processes, a first HARQ process is one of the X HARQ processes, a time-domain position of time-domain resources occupied by a first-type radio signal of the X first-type radio signals corresponding to the first HARQ process is used to determine a signature identity of the first HARQ process.

15. The first node according to claim 10 , comprising:

the second receiver, which receives third information;

wherein a transmitter of the third information is the same as a target receiver of at least one of the X first-type radio signals; the third information is used to indicate whether at least one of the X first-type radio signals is correctly received, or the third information is used to indicate whether at least one of the X first-type radio signals is not correctly received; the third information is used to generate the second information.

16. The first node according to claim 10 , comprising:

the first transmitter, which transmits a second signaling;

wherein the second signaling is used to indicate the scheduling information of at least one of the X first-type radio signals, and the first signaling is used to determine information carried by the second signaling; a target receiver of the second signaling is the same as a target receiver of at least one of the X first-type radio signals, the second signaling is transmitted via a second-type air interface, and the second-type air interface is different from the first-type air interface.

17. A second node for wireless communications, comprising:

a third transmitter, which transmits first information;

a fourth transmitter, which transmits a first signaling; and

a third receiver, which receives second information, the second information comprising Y first-type information bit(s), Y being a positive integer;

wherein the first information is used to determine the second information, and the first signaling is used to determine scheduling information of at least one of X first-type radio signals, and the X first-type radio signals are transmitted by a target receiver of the first signaling; the second information comprising multiple information bits, and only the Y first-type information bit(s) of the multiple information bits comprised in the second information is(are) used to indicate whether at least one of the X first-type radio signals is correctly received; a target receiver of any of the X first-type radio signals is different from a target receiver of the second information; the scheduling information comprises at least one of occupied time-frequency resources, an adopted MCS or an adopted RV; the first information, the first signaling and the second information are all transmitted via a first-type air interface; when an information bit other than the Y first-type information bit(s) is comprised in the second information, the first signaling is used to indicate a first time-frequency-resource set, a time-domain position of time-domain resources in the first time-frequency-resource set is used to determine a distribution pattern of the Y first-type information bit(s) in the multiple information bits comprised in the second information.

18. The second node according to claim 17 , wherein the Y first-type information bit(s) is(are) divided into Y 1 bit-group(s), at least one of the Y 1 bit-group(s) is used to indicate whether at least one of the X first-type radio signals is correctly received, or at least one of the Y 1 bit-group(s) is used to indicate whether at least one of the X first-type radio signals is not correctly received.