Method and device for use in wireless communication nodes

1. A first node for wireless communications, comprising:

a first receiver, executing a first monitoring and a second monitoring; judging whether a first channel and a second channel are available respectively according to the first monitoring and the second monitoring; and

a first transmitter, when the first channel is judged to be available and the second channel is judged to be unavailable, transmitting a target bit block on the first channel; when the second channel is judged to be available, transmitting a target bit block on the second channel;

wherein the first channel overlaps with the second channel in time domain; the second channel occupies K subbands in frequency domain, K being a positive integer greater than 1; when a number of idle subbands on the second channel is less than K 1 , the second channel is judged to be unavailable, and when a number of idle subbands on the second channel is not less than K 1 , the second channel is judged to be available; K 1 is a positive integer not greater than K; the first monitoring is a Listen Before Talk (LBT), or the first monitoring is a Clear Channel Assessment (CCA); the second monitoring is a Listen Before Talk (LBT), or the second monitoring is a Clear Channel Assessment (CCA); the first channel is for PUCCH transmission, and the second channel is for PUSCH transmission.

2. The first node according to claim 1 , wherein the first transmitter transmits a first radio signal in K 2 subband(s) of the K subbands; and the K 2 subband(s) on the second channel in the second monitoring is(are) judged to be idle; K 2 is a positive integer less than K.

3. The first node according to claim 2 , wherein the second channel is judged to be available, the target bit block is used to generate a first radio sub-signal, and the first radio signal comprises the first radio sub-signal.

4. The first node according to claim 1 , wherein the first receiver receives a first signaling and a target radio signal; the first signaling is used to determine at least one of time-domain resources occupied by the target radio signal or frequency-domain resources occupied by the target radio signal; and the target bit block is used to determine whether the target radio signal is correctly received.

5. The first node according to claim 2 , wherein the first receiver receives a second signaling, the second signaling is used to determine a first frequency-domain resource set, the first frequency-domain resource set comprises K frequency-domain resource subsets, and the K frequency-domain resource subsets are located in the K subbands respectively; a first bit block is used to generate the first radio signal; and the K frequency-domain resource subsets are reserved for transmitting the first bit block.

6. The first node according to claim 1 , wherein the second channel can be used to transmit data and control information, and the first channel can only be used to transmit control information, or the first channel is a PUCCH and the second channel is a PUSCH; and the target bit block comprises at least one of an HARQ feedback or a CSI.

7. The first node according to claim 1 , wherein the K 1 is equal to a product of K and a first coefficient rounded to an integer; the first coefficient is fixed, or the first coefficient is configured by a higher-layer signaling; the first coefficient is equal to X percent, X being a positive integer greater than 0 not greater than 100.

8. The first node according to claim 2 , wherein the second channel is judged by the first node to be available, and the first node transmits a target bit block on the second channel; the target bit block comprises K second-type bit sub-blocks, the K second-type bit sub-blocks are respectively mapped into the K subbands, and K 2 second-type bit sub-block(s) in the K second-type bit sub-blocks is(are respectively) mapped into the K 2 subband(s) of the K subbands; the first bit block is used to generate the K sub-radio signals, the K sub-radio signals are mapped into K subbands respectively, and K 2 sub-radio signal(s) mapped into the K 2 subband(s) in the K sub-radio signals consists(consist) of the first radio signal; the K sub-radio signals respectively correspond to K Code Block Groups (CBG)s, and the K 2 sub-radio signal(s) corresponds(respectively correspond) to K 2 CBG(s) in the K CBGs; and the K 2 second-type bit sub-block(s) is(are respectively) transmitted in the K 2 sub-radio signal(s).

9. A second node for wireless communications, comprising:

a second receiver, detecting a target bit block in both a first channel and a second channel;

wherein the first channel overlaps with the second channel in time domain; the second channel occupies K subbands in frequency domain, K being a positive integer greater than 1; a transmitter of the target bit block is a first node, the first node executes a first monitoring and a second monitoring, and judges whether the first channel and the second channel are available respectively according to the first monitoring and the second monitoring; when a number of idle subbands on the second channel is less than K 1 , the second channel is judged to be unavailable, and the first node transmits the target bit block on the first channel; when a number of idle subbands on the second channel is not less than K 1 , the second channel is judged to be available and the first node transmits the target bit block on the second channel; K 1 is a positive integer not greater than K; the first monitoring is a Listen Before Talk (LBT), or the first monitoring is a Clear Channel Assessment (CCA); the second monitoring is a Listen Before Talk (LBT), or the second monitoring is a Clear Channel Assessment (CCA); the first channel is for PUCCH transmission, and the second channel is for PUSCH transmission.

10. The second node according to claim 9 , wherein the second receiver detects a radio signal generated by a first bit block in the K subbands; and the first node transmits a first radio signal in only K 2 subband(s) of the K subbands; the first bit block is used to generate the first radio signal, and the K 2 subband(s) on the second channel is(are) judged to be idle in a second monitoring; the first node executes the second monitoring; K 2 is a positive integer less than K.

11. The second node according to claim 10 , wherein the second channel is judged to be available, the target bit block is used to generate a first radio sub-signal, and the first radio signal comprises the first radio sub-signal.

12. The second node according to claim 9 , comprising:

the second transmitter, transmitting a first signaling and a target radio signal;

wherein the first signaling is used to determine at least one of time-domain resources occupied by the target radio signal or frequency-domain resources occupied by the target radio signal; and the target bit block is used to determine whether the target radio signal is correctly received.

13. The second node according to claim 10 , wherein the second transmitter transmits a second signaling, the second signaling is used to determine a first frequency-domain resource set, the first frequency-domain resource set comprises K frequency-domain resource subsets, and the K frequency-domain resource subsets are located in the K subbands respectively; and the K frequency-domain resource subsets are reserved for transmitting the first bit block.

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

executing a first monitoring and a second monitoring; judging whether a first channel and a second channel are available respectively according to the first monitoring and the second monitoring; and

when the first channel is judged to be available and the second channel is judged to be unavailable, transmitting a target bit block on the first channel; when the second channel is judged to be available, transmitting a target bit block on the second channel;

wherein the first channel overlaps with the second channel in time domain; the second channel occupies K subbands in frequency domain, K being a positive integer greater than 1; when a number of idle subbands on the second channel is less than K 1 , the second channel is judged to be unavailable, and when a number of idle subbands on the second channel is not less than K 1 , the second channel is judged to be available; K 1 is a positive integer not greater than K; the first monitoring is a Listen Before Talk (LBT), or the first monitoring is a Clear Channel Assessment (CCA); the second monitoring is a Listen Before Talk (LBT), or the second monitoring is a Clear Channel Assessment (CCA); the first channel is for PUCCH transmission, and the second channel is for PUSCH transmission.

15. The method in a first node according to claim 14 , comprising:

transmitting a first radio signal in K 2 subband(s) of the K subbands;

wherein the K 2 subband(s) on the second channel is(are) judged to be idle in the second monitoring; K 2 is a positive integer less than K.

16. The method in a first node according to claim 14 , comprising:

receiving a first signaling and a target radio signal;

wherein the first signaling is used to determine at least one of time-domain resources occupied by the target radio signal or frequency-domain resources occupied by the target radio signal; and

the target bit block is used to determine whether the target radio signal is correctly received.

17. The method in a first node according to claim 15 , comprising:

receiving a second signaling;

wherein the second signaling is used to determine a first frequency-domain resource set, the first frequency-domain resource set comprises K frequency-domain resource subsets, and the K frequency-domain resource subsets are located in the K subbands respectively; a first bit block is used to generate the first radio signal; and the K frequency-domain resource subsets are reserved for transmitting the first bit block.

18. The method in a first node according to 14 , wherein the second channel can be used to transmit data and control information, and the first channel can only be used to transmit control information, or the first channel is a PUCCH and the second channel is a PUSCH; and the target bit block comprises at least one of an HARQ feedback or a CSI.

19. The method in a first node according to claim 14 , wherein K 1 is equal to a product of K and a first coefficient rounded to an integer; the first coefficient is fixed, or the first coefficient is configured by a higher-layer signaling; the first coefficient is equal to X percent, X being a positive integer greater than 0 not greater than 100.

20. The method in a first node according to claim 15 , wherein the second channel is judged by the first node to be available, and the first node transmits a target bit block on the second channel; the target bit block comprises K second-type bit sub-blocks, the K second-type bit sub-blocks are respectively mapped into the K subbands, and K 2 second-type bit sub-block(s) in the K second-type bit sub-blocks is(are respectively) mapped into the K 2 subband(s) of the K subbands; the first bit block is used to generate the K sub-radio signals, the K sub-radio signals are mapped into K subbands respectively, and K 2 sub-radio signal(s) mapped into the K 2 subband(s) in the K sub-radio signals consists(consist) of the first radio signal; the K sub-radio signals respectively correspond to K Code Block Groups (CBG)s, and the K 2 sub-radio signal(s) corresponds(respectively correspond) to K 2 CBG(s) in the K CBGs; and the K 2 second-type bit sub-block(s) is(are respectively) transmitted in the K 2 sub-radio signal(s).