Method and device in UE and base station used for wireless communication

1. A method in a User Equipment (UE) for wireless communications, comprising:

receiving first information, the first information being used for indicating M DCI blind decodings, and the first information comprising part of or all information in a PDCCH-Config IE;

monitoring a first-type radio signal respectively on each sub-band of S sub-band(s) in a first time-domain resource; and

performing at most M1 DCI blind decoding(s) of the M DCI blind decodings on the S sub-band(s) in the first time-domain resource;

wherein the first-type radio signal detected on the S sub-band(s) is used for determining the M1 DCI blind decoding(s) out of the M DCI blind decodings; the first-type radio signal is transmitted on PDCCH; M is a positive integer, M1 is a positive integer no greater than M, and S is a positive integer; when S is larger than 1, the S sub-bands respectively correspond to different LBTs; the first-type radio signal is transmitted only in (a) sub-band(s) of the S sub-band(s) that has(have) passed LBT; the first time-domain resource comprises a COT (Channel Occupancy Time); the first information is used for indicating N RE pools, any of the N RE pools comprising a positive integer number of REs; the M DCI blind decodings are respectively performed in M RE sets, and any RE set of the M RE sets belongs to one of the N RE pools; the M1 DCI blind decoding(s) is(are) respectively performed in M1 RE set(s) of the M RE sets; any RE set of the M RE sets comprises a positive integer number of REs; N is a positive integer; the N RE pools are respectively N search space sets; the first information comprises second sub-information, the second sub-information indicating the N RE pools, the second sub-information comprises part of or all information in a searchSpacesToAddModList field of a PDCCH-Config IE; the M RE sets are respectively M PDCCH candidates; any RE set of the M1 RE set(s) belongs to N1 RE pool(s) of the N RE pools; the first-type radio signal detected on the S sub-band(s) is used for determining the N1 RE pool(s) out of the N RE pools, and for determining a number of RE set(s) comprised in each of the N1 RE pool(s) that belongs(belong) to the M1 RE set(s); N1 is a positive integer no greater than N; in the first time-domain resource, an end time for time resources occupied by the first-type radio signal is no later than a start time for time resources occupied by the M1 DCI blind decoding(s).

2. The method according to claim 1 , wherein each of the S sub-band(s) is deployed at Unlicensed Spectrum, and the first information is UE-specific;

or, any of the S sub-band(s) comprises a positive integer number of consecutive subcarriers in frequency domain;

or, any two sub-bands of the S sub-bands are orthogonal in frequency domain, and there is a guard band between any two adjacent sub-bands of the S sub-bands in frequency domain;

or, any of the S sub-band(s) is of a bandwidth of 20 MHz.

3. The method according to claim 1 , wherein frequency resources occupied by any RE set of the M RE sets belong to one of the S sub-band(s), any RE pool of the N RE pools belongs to the S sub-band(s) in frequency domain;

or, frequency resources occupied by any RE set of the M RE sets belong to one of the S sub-bands, any RE pool of the N RE pools belongs to the S sub-bands in frequency domain, frequency resources occupied by at least one of the N RE pools are distributed among multiple sub-bands of the S sub-bands.

4. The method according to claim 1 , wherein at least two RE pools of the N RE pools are two search space sets in a same CORESET.

5. The method according to claim 1 , wherein the N RE pools respectively correspond to N fourth indexes; the first-type radio signal detected on the S sub-band(s) is used for determining P4 candidate value(s), for any given RE pool of the N RE pools, when a fourth index for the given RE pool is equal to a candidate value of the P4 candidate value(s), the given RE pool is one of the N1 RE pool(s); and when a fourth index for the given RE pool is unequal to any of the P4 candidate value(s), the given RE pool is not one of the N1 RE pool(s); the N fourthindexes are SearchSpaceIds, respectively.

6. A method in a base station for wireless communications, comprising:

transmitting first information, the first information being used for indicating M DCI blind decodings, and the first information comprising part of or all information in a PDCCH-Config IE;

performing S access detection(s) respectively on S sub-band(s), the S access detection(s) being used for determining S1 sub-band(s) out of the S sub-band(s); and

transmitting a first-type radio signal only on the S1 sub-band(s) of the S sub-band(s) respectively in a first time-domain resource;

wherein a target receiver of the first information performs at most M1 DCI blind decoding(s) of the M DCI blind decodings on the S sub-band(s) in the first time-domain resource; the first-type radio signal is used for determining the M1 DCI blind decoding(s) out of the M DCI blind decodings; the first-type radio signal is transmitted on PDCCH; M and S are positive integers respectively, while M1 and S1 are positive integers respectively no greater than M and S; when S is larger than 1, the S sub-bands respectively correspond to different LBTs; the first-type radio signal is transmitted only in (a) sub-band(s) of the S sub-band(s) that has(have) passed LBT; the first time-domain resource comprises a COT (Channel Occupancy Time); the first information is used for indicating N RE pools, any of the N RE pools comprising a positive integer number of REs; the M DCI blind decodings are respectively performed in M RE sets, and any RE set of the M RE sets belongs to one of the N RE pools; the M1 DCI blind decoding(s) is(are) respectively performed in M1 RE set(s) of the M RE sets; any RE set of the M RE sets comprises a positive integer number of REs; N is a positive integer; the N RE pools are respectively N search space sets; the first information comprises second sub-information, the second sub-information indicating the N RE pools, the second sub-information comprises part of or all information in a searchSpacesToAddModList field of a PDCCH-Config IE; the M RE sets are respectively M PDCCH candidates; any RE set of the M1 RE set(s) belongs to N1 RE pool(s) of the N RE pools; the first-type radio signal detected on the S sub-band(s) is used for determining the N1 RE pool(s) out of the N RE pools, and for determining a number of RE set(s) comprised in each of the N1 RE pool(s) that belongs(belong) to the M1 RE set(s); N1 is a positive integer no greater than N; in the first time-domain resource, an end time for time resources occupied by the first-type radio signal is no later than a start time for time resources occupied by the M1 DCI blind decoding(s).

7. The method according to claim 6 , wherein each of the S sub-band(s) is deployed at Unlicensed Spectrum, and the first information is UE-specific;

or, any of the S sub-band(s) comprises a positive integer number of consecutive subcarriers in frequency domain;

or, any two sub-bands of the S sub-bands are orthogonal in frequency domain, and there is a guard band between any two adjacent sub-bands of the S sub-bands in frequency domain;

or, any of the S sub-band(s) is of a bandwidth of 20 MHz.

8. The method according to claim 6 , wherein frequency resources occupied by any RE set of the M RE sets belong to one of the S sub-band(s), any RE pool of the N RE pools belongs to the S sub-band(s) in frequency domain;

or, frequency resources occupied by any RE set of the M RE sets belong to one of the S sub-bands, any RE pool of the N RE pools belongs to the S sub-bands in frequency domain, frequency resources occupied by at least one of the N RE pools are distributed among multiple sub-bands of the S sub-bands.

9. The method according to claim 6 , wherein at least two RE pools of the N RE pools are two search space sets in a same CORESET.

10. The method according to claim 6 , wherein the N RE pools respectively correspond to N fourth indexes; the first-type radio signal detected on the S sub-band(s) is used for determining P4 candidate value(s), for any given RE pool of the N RE pools, when a fourth index for the given RE pool is equal to a candidate value of the P4 candidate value(s), the given RE pool is one of the N1 RE pool(s); and when a fourth index for the given RE pool is unequal to any of the P4 candidate value(s), the given RE pool is not one of the N1 RE pool(s); the N fourth indexes are SearchSpaceIds, respectively.

11. A UE for wireless communications, comprising:

a first receiver, which receives first information, the first information being used for indicating M DCI blind decodings, and the first information comprising part of or all information in a PDCCH-Config IE;

a second receiver, which monitors a first-type radio signal respectively on each sub-band of S sub-band(s) in a first time-domain resource; and

a first processor, which performs at most M1 DCI blind decoding(s) of the M DCI blind decodings on the S sub-band(s) in the first time-domain resource;

wherein the first-type radio signal detected on the S sub-band(s) is used for determining the M1 DCI blind decoding(s) out of the M DCI blind decodings; the first-type radio signal is transmitted on PDCCH; M is a positive integer, M1 is a positive integer no greater than M, and S is a positive integer; when S is larger than 1, the S sub-bands respectively correspond to different LBTs; the first-type radio signal is transmitted only in (a) sub-band(s) of the S sub-band(s) that has(have) passed LBT; the first time-domain resource comprises a COT (Channel Occupancy Time); the first information is used for indicating N RE pools, any of the N RE pools comprising a positive integer number of REs; the M DCI blind decodings are respectively performed in M RE sets, and any RE set of the M RE sets belongs to one of the N RE pools; the M1 DCI blind decoding(s) is(are) respectively performed in M1 RE set(s) of the M RE sets; any RE set of the M RE sets comprises a positive integer number of REs; N is a positive integer; the N RE pools are respectively N search space sets; the first information comprises second sub-information, the second sub-information indicating the N RE pools, the second sub-information comprises part of or all information in a searchSpacesToAddModList field of a PDCCH-Config IE; the M RE sets are respectively M PDCCH candidates; any RE set of the M1 RE set(s) belongs to N1 RE pool(s) of the N RE pools; the first-type radio signal detected on the S sub-band(s) is used for determining the N1 RE pool(s) out of the N RE pools, and for determining a number of RE set(s) comprised in each of the N1 RE pool(s) that belongs(belong) to the M1 RE set(s); N1 is a positive integer no greater than N; in the first time-domain resource, an end time for time resources occupied by the first-type radio signal is no later than a start time for time resources occupied by the M1 DCI blind decoding(s).

12. The UE according to claim 11 , wherein each of the S sub-band(s) is deployed at Unlicensed Spectrum, and the first information is UE-specific;

or, any of the S sub-band(s) comprises a positive integer number of consecutive subcarriers in frequency domain;

or, any two sub-bands of the S sub-bands are orthogonal in frequency domain, and there is a guard band between any two adjacent sub-bands of the S sub-bands in frequency domain;

or, any of the S sub-band(s) is of a bandwidth of 20 MHz.

13. The UE according to claim 11 , wherein frequency resources occupied by any RE set of the M RE sets belong to one of the S sub-band(s), any RE pool of the N RE pools belongs to the S sub-band(s) in frequency domain;

or, frequency resources occupied by any RE set of the M RE sets belong to one of the S sub-bands, any RE pool of the N RE pools belongs to the S sub-bands in frequency domain, frequency resources occupied by at least one of the N RE pools are distributed among multiple sub-bands of the S sub-bands.

14. The UE according to claim 11 , wherein at least two RE pools of the N RE pools are two search space sets in a same CORESET.

15. The UE according to claim 11 , wherein the N RE pools respectively correspond to N fourth indexes; the first-type radio signal detected on the S sub-band(s) is used for determining P4 candidate value(s), for any given RE pool of the N RE pools, when a fourth index for the given RE pool is equal to a candidate value of the P4 candidate value(s), the given RE pool is one of the N1 RE pool(s); and when a fourth index for the given RE pool is unequal to any of the P4 candidate value(s), the given RE pool is not one of the N1 RE pool(s); the N fourth indexes are SearchSpaceIds, respectively.

16. A base station for wireless communications, comprising:

a first transmitter, which transmits first information, the first information being used for indicating M DCI blind decodings, and the first information comprising part of or all information in a PDCCH-Config IE;

a third receiver, which performs S access detection(s) respectively on S sub-band(s), the S access detection(s) being used for determining S1 sub-band(s) out of the S sub-band(s); and

a second processor, which transmits a first-type radio signal only on the S1 sub-band(s) of the S sub-band(s) respectively in a first time-domain resource;

wherein a target receiver of the first information performs at most M1 DCI blind decoding(s) of the M DCI blind decodings on the S sub-band(s) in the first time-domain resource; the first-type radio signal is used for determining the M1 DCI blind decoding(s) out of the M DCI blind decodings; the first-type radio signal is transmitted on PDCCH; M and S are positive integers respectively, while M1 and S1 are positive integers respectively no greater than M and S; when S is larger than 1, the S sub-bands respectively correspond to different LBTs; the first-type radio signal is transmitted only in (a) sub-band(s) of the S sub-band(s) that has(have) passed LBT; the first time-domain resource comprises a COT (Channel Occupancy Time); the first information is used for indicating N RE pools, any of the N RE pools comprising a positive integer number of REs; the M DCI blind decodings are respectively performed in M RE sets, and any RE set of the M RE sets belongs to one of the N RE pools; the M1 DCI blind decoding(s) is(are) respectively performed in M1 RE set(s) of the M RE sets; any RE set of the M RE sets comprises a positive integer number of REs; N is a positive integer; the N RE pools are respectively N search space sets; the first information comprises second sub-information, the second sub-information indicating the N RE pools, the second sub-information comprises part of or all information in a searchSpacesToAddModList field of a PDCCH-Config IE; the M RE sets are respectively M PDCCH candidates; any RE set of the M1 RE set(s) belongs to N1 RE pool(s) of the N RE pools; the first-type radio signal detected on the S sub-band(s) is used for determining the N1 RE pool(s) out of the N RE pools, and for determining a number of RE set(s) comprised in each of the N1 RE pool(s) that belongs(belong) to the M1 RE set(s); N1 is a positive integer no greater than N; in the first time-domain resource, an end time for time resources occupied by the first-type radio signal is no later than a start time for time resources occupied by the M1 DCI blind decoding(s).

17. The base station according to claim 16 , wherein each of the S sub-band(s) is deployed at Unlicensed Spectrum, and the first information is UE-specific;

or, any of the S sub-band(s) comprises a positive integer number of consecutive subcarriers in frequency domain;

or, any two sub-bands of the S sub-bands are orthogonal in frequency domain, and there is a guard band between any two adjacent sub-bands of the S sub-bands in frequency domain;

or, any of the S sub-band(s) is of a bandwidth of 20 MHz.

18. The base station according to claim 16 , wherein frequency resources occupied by any RE set of the M RE sets belong to one of the S sub-band(s), any RE pool of the N RE pools belongs to the S sub-band(s) in frequency domain;

or, frequency resources occupied by any RE set of the M RE sets belong to one of the S sub-bands, any RE pool of the N RE pools belongs to the S sub-bands in frequency domain, frequency resources occupied by at least one of the N RE pools are distributed among multiple sub-bands of the S sub-bands.

19. The base station according to claim 16 , wherein at least two RE pools of the N RE pools are two search space sets in a same CORESET.

20. The base station according to claim 16 , wherein the N RE pools respectively correspond to N fourth indexes; the first-type radio signal detected on the S sub-band(s) is used for determining P4 candidate value(s), for any given RE pool of the N RE pools, when a fourth index for the given RE pool is equal to a candidate value of the P4 candidate value(s), the given RE pool is one of the N1 RE pool(s); and when a fourth index for the given RE pool is unequal to any of the P4 candidate value(s), the given RE pool is not one of the N1 RE pool(s); the N fourth indexes are SearchSpaceIds, respectively.