METHOD AND DEVICE IN UE AND BASE STATION USED FOR WIRELESS COMMUNICATION

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

receiving first information, wherein: the first information is used for indicating K frequency sub-band(s) of M frequency sub-bands, K is a positive integer; the M frequency sub-bands comprise the K frequency sub-band(s), M is a positive integer not less than the K; the M frequency sub-bands are M sub-bands in a BWP respectively, any two of the M frequency sub-bands are orthogonal in frequency domain; a transmitter of the first information determines through K access detection(s) respectively that the K frequency sub-band(s) is(are) idle; the first information belongs to DCI specific to a terminal group, the UE is a terminal of the terminal group, or the first information belongs to DCI common to a cell; the first information comprises M bits, the M bits correspond to the M frequency sub-bands respectively; and a given bit is any bit of the M bits, the given bit being equal to 1 is used for indicating that a frequency sub-band of the M frequency sub-bands corresponding to the given bit belongs to the K frequency sub-bands, the given bit being equal to 0 is used for indicating that a frequency sub-band of the M frequency sub-bands corresponding to the given bit does not belong to the K frequency sub-bands;

receiving second information, the second information belongs to a UE-specific DCI, wherein the second information is used for determining at least one of frequency domain resources occupied by a first radio signal and time domain resources occupied by the first radio signal;

performing a first access detection, or performing a second access detection; and

transmitting the first radio signal in a first frequency sub-band, or dropping transmission of the first radio signal in a first frequency sub-band, wherein the first frequency sub-band comprises the frequency domain resources occupied by the first radio signal;

wherein when the first frequency sub-band belongs to the K frequency sub-band(s) and the time domain resources occupied by the first radio signal belong to a first time window, the first access detection is performed, the first access detection is used for determining whether the first radio signal is transmitted in the first frequency sub-band; the first access detection comprises performing Q energy detection(s) respectively in Q time sub-pool(s) of a first frequency band, and acquiring Q detection value(s), end time of the Q time sub-pool(s) is not later than start time for transmission of the first radio signal; the first frequency band comprises the first frequency sub-band;

otherwise, when the first frequency sub-band does not belong to the K frequency sub-band(s) or the time domain resources occupied by the first radio signal do not belong to the first time window, the second access detection is performed, the second access detection is used for determining whether the first radio signal is transmitted in the first frequency sub-band; the second access detection comprises performing P energy detection(s) respectively in P time sub-pool(s) of a second frequency band, and acquiring P detection value(s), end time of the P time sub-pool(s) is not later than start time for transmission of the first radio signal; the second frequency band comprises the first frequency sub-band; and

detection time for the first access detection is a sum of time occupied by the Q time sub-pool(s), and detection time for the second access detection is a sum of time occupied by the P time sub-pool(s); the detection time for the first access detection is less than the detection time for the second access detection.

2 . The method according to claim 1 , wherein when the first access detection is performed, if each one of Q1 detection value(s) of the Q detection value(s) is lower than a first reference threshold, the first radio signal is transmitted in the first frequency sub-band; otherwise, transmission of the first radio signal is dropped in the first frequency sub-band; Q is a positive integer, Q1 is a positive integer not greater than the Q;

when the second access detection is performed, if each one of P1 detection value(s) of the P detection value(s) is lower than the first reference threshold, the first radio signal is transmitted in the first frequency sub-band; otherwise, transmission of the first radio signal is dropped in the first frequency sub-band; P is a positive integer, P1 is a positive integer not greater than the P, the P1 is greater than the Q1.

3 . The method according to claim 1 , wherein duration time for the first time window in time domain is a MCOT for the K frequency sub-band(s);

or, the transmitter of the first information needs to determine through access detection that the first frequency sub-band is not occupied after the first time window; the access detection is LBT, or the access detection is Clear Channel Assessment (CCA).

4 . The method according to claim 2 , wherein duration time for the first time window in time domain is a MCOT for the K frequency sub-band(s);

or, the transmitter of the first information needs to determine through access detection that the first frequency sub-band is not occupied after the first time window; the access detection is LBT, or the access detection is Clear Channel Assessment (CCA).

5 . The method according to claim 1 , wherein the transmitter of the first information performs M access detection(s), M frequency sub-band(s) comprises(comprise) the K frequency sub-band(s), the M access detection(s) corresponds(correspond) to M frequency sub-band(s) respectively, the K access detection(s) corresponding to the K frequency sub-band(s) of the M frequency sub-band(s) determines(determine) that all the K frequency sub-band(s) is(are) idle, any one access detection other than the K access detection(s) among the M access detection(s) determines that a frequency sub-band of the corresponding M frequency sub-band(s) is not idle.

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

transmitting first information, wherein the first information is used for indicating K frequency sub-band(s) of M frequency sub-bands, K is a positive integer; the M frequency sub-bands comprise the K frequency sub-band(s), M is a positive integer not less than the K; the M frequency sub-bands are M sub-bands in a BWP respectively, any two of the M frequency sub-bands are orthogonal in frequency domain; the base station determines through K access detection(s) respectively that the K frequency sub-band(s) is(are) idle; the first information belongs to DCI specific to a terminal group, the UE being a terminal of the terminal group, or the first information belongs to DCI common to a cell; the first information comprises M bits, the M bits correspond to the M frequency sub-bands respectively; and a given bit is any bit of the M bits, the given bit being equal to 1 is used for indicating that a frequency sub-band of the M frequency sub-bands corresponding to the given bit belongs to the K frequency sub-bands, and the given bit being equal to 0 is used for indicating that a frequency sub-band of the M frequency sub-bands corresponding to the given bit does not belong to the K frequency sub-bands;

transmitting second information, the second information belonging to a UE-specific DCI, and the second information being used for determining at least one of frequency domain resources occupied by a first radio signal and time domain resources occupied by the first radio signal;

monitoring in a first frequency sub-band whether a first radio signal is transmitted, wherein the first frequency sub-band comprises the frequency domain resources occupied by the first radio signal;

wherein a transmitter of the first radio signal performs a first access detection or a second access detection; when the first frequency sub-band belongs to the K frequency sub-band(s) and the time domain resources occupied by the first radio signal belong to a first time window, the first access detection is performed, the first access detection is used for determining whether the first radio signal is transmitted in the first frequency sub-band; the first access detection comprises performing Q energy detection(s) respectively in Q time sub-pool(s) of a first frequency band, and acquiring Q detection value(s), end time of the Q time sub-pool(s) is not later than start time for transmission of the first radio signal; the first frequency band comprises the first frequency sub-band;

otherwise, when the first frequency sub-band does not belong to the K frequency sub-band(s) or the time domain resources occupied by the first radio signal do not belong to the first time window, the second access detection is performed, the second access detection is used for determining whether the first radio signal is transmitted in the first frequency sub-band; the second access detection comprises performing P energy detection(s) respectively in P time sub-pool(s) of a second frequency band, and acquiring P detection value(s), end time of the P time sub-pool(s) is not later than start time for transmission of the first radio signal; the second frequency band comprises the first frequency sub-band; and

detection time for the first access detection is a sum of time occupied by the Q time sub-pool(s), and detection time for the second access detection is a sum of time occupied by the P time sub-pool(s); the detection time for the first access detection is less than the detection time for the second access detection.

7 . The method according to claim 6 , wherein when the first access detection is performed, if each one of Q1 detection value(s) of the Q detection value(s) is lower than a first reference threshold, the first radio signal is transmitted in the first frequency sub-band; otherwise, transmission of the first radio signal is dropped in the first frequency sub-band; Q is a positive integer, Q1 is a positive integer not greater than the Q;

when the second access detection is performed, if each one of P1 detection value(s) of the P detection value(s) is lower than the first reference threshold, the first radio signal is transmitted in the first frequency sub-band; otherwise, transmission of the first radio signal is dropped in the first frequency sub-band; P is a positive integer, P1 is a positive integer not greater than the P, the P1 is greater than the Q1.

8 . The method according to claim 6 , wherein duration time for the first time window in time domain is a MCOT for the K frequency sub-band(s);

or, the transmitter of the first information needs to determine through access detection that the first frequency sub-band is not occupied after the first time window; the access detection is LBT, or the access detection is Clear Channel Assessment (CCA).

9 . The method according to claim 7 , wherein duration time for the first time window in time domain is a MCOT for the K frequency sub-band(s);

or, the transmitter of the first information needs to determine through access detection that the first frequency sub-band is not occupied after the first time window; the access detection is LBT, or the access detection is Clear Channel Assessment (CCA).

10 . The method according to claim 6 , wherein the transmitter of the first information performs M access detection(s), M frequency sub-band(s) comprises(comprise) the K frequency sub-band(s), the M access detection(s) corresponds(correspond) to M frequency sub-band(s) respectively, the K access detection(s) corresponding to the K frequency sub-band(s) of the M frequency sub-band(s) determines(determine) that all the K frequency sub-band(s) is(are) idle, any one access detection other than the K access detection(s) among the M access detection(s) determines that a frequency sub-band of the corresponding M frequency sub-band(s) is not idle.

11 . A UE used for wireless communication, comprising:

a first receiver, receiving first information; receiving second information; performing a first access detection, or performing a second access detection; wherein:

the first information is used for indicating K frequency sub-band(s) of M frequency sub-bands, K is a positive integer; the M frequency sub-bands comprise the K frequency sub-band(s), M is a positive integer not less than the K; the M frequency sub-bands are M sub-bands in a BWP respectively, any two of the M frequency sub-bands are orthogonal in frequency domain; a transmitter of the first information determines through K access detection(s) respectively that the K frequency sub-band(s) is(are) idle; the first information belongs to DCI specific to a terminal group, the UE is a terminal of the terminal group, or the first information belongs to DCI common to a cell; the first information comprises M bits, the M bits correspond to the M frequency sub-bands respectively; and a given bit is any bit of the M bits, the given bit being equal to 1 is used for indicating that a frequency sub-band of the M frequency sub-bands corresponding to the given bit belongs to the K frequency sub-bands, the given bit being equal to 0 is used for indicating that a frequency sub-band of the M frequency sub-bands corresponding to the given bit does not belong to the K frequency sub-bands; the second information belongs to a UE-specific DCI, and the second information being used for determining at least one of the frequency domain resources occupied by a first radio signal and the time domain resources occupied by the first radio signal; and

a first transmitter, transmitting the first radio signal in a first frequency sub-band, or dropping transmission of the first radio signal in a first frequency sub-band, wherein the first frequency sub-band comprises the frequency domain resources occupied by the first radio signal;

wherein when the first frequency sub-band belongs to the K frequency sub-band(s) and the time domain resources occupied by the first radio signal belong to a first time window, the first access detection is performed, the first access detection is used for determining whether the first radio signal is transmitted in the first frequency sub-band; the first access detection comprises performing Q energy detection(s) respectively in Q time sub-pool(s) of a first frequency band, and acquiring Q detection value(s), end time of the Q time sub-pool(s) is not later than start time for transmission of the first radio signal; the first frequency band comprises the first frequency sub-band;

otherwise, when the first frequency sub-band does not belong to the K frequency sub-band(s) or the time domain resources occupied by the first radio signal do not belong to the first time window, the second access detection is performed, the second access detection is used for determining whether the first radio signal is transmitted in the first frequency sub-band; the second access detection comprises performing P energy detection(s) respectively in P time sub-pool(s) of a second frequency band, and acquiring P detection value(s), end time of the P time sub-pool(s) is not later than start time for transmission of the first radio signal; the second frequency band comprises the first frequency sub-band;

detection time for the first access detection is a sum of time occupied by the Q time sub-pool(s), and detection time for the second access detection is a sum of time occupied by the P time sub-pool(s); the detection time for the first access detection is less than the detection time of the second access detection.

12 . The UE according to claim 11 , wherein when the first access detection is performed, if each one of Q1 detection value(s) of the Q detection value(s) is lower than a first reference threshold, the first radio signal is transmitted in the first frequency sub-band; otherwise, transmission of the first radio signal is dropped in the first frequency sub-band; Q is a positive integer, Q1 is a positive integer not greater than the Q;

when the second access detection is performed, if each one of P1 detection value(s) of the P detection value(s) is lower than the first reference threshold, the first radio signal is transmitted in the first frequency sub-band; otherwise, transmission of the first radio signal is dropped in the first frequency sub-band; P is a positive integer, P1 is a positive integer not greater than the P, the P1 is greater than the Q1.

13 . The UE according to claim 11 , wherein duration time for the first time window in time domain is a MCOT for the K frequency sub-band(s);

or, the transmitter of the first information needs to determine through access detection that the first frequency sub-band is not occupied after the first time window; the access detection is LBT, or the access detection is Clear Channel Assessment (CCA).

14 . The UE according to claim 12 , wherein duration time for the first time window in time domain is a MCOT for the K frequency sub-band(s);

or, the transmitter of the first information needs to determine through access detection that the first frequency sub-band is not occupied after the first time window; the access detection is LBT, or the access detection is Clear Channel Assessment (CCA).

15 . The UE according to claim 11 , wherein the transmitter of the first information performs M access detection(s), M frequency sub-band(s) comprises(comprise) the K frequency sub-band(s), the M access detection(s) corresponds(correspond) to M frequency sub-band(s) respectively, the K access detection(s) corresponding to the K frequency sub-band(s) of the M frequency sub-band(s) determines(determine) that all the K frequency sub-band(s) is(are) idle, any one access detection other than the K access detection(s) among the M access detection(s) determines that a frequency sub-band of the corresponding M frequency sub-band(s) is not idle.

16 . A base station used for wireless communication, comprising:

a second transmitter, transmitting first information; transmits second information; wherein the first information is used for indicating K frequency sub-band(s) of M frequency sub-bands, K is a positive integer; the M frequency sub-bands comprise the K frequency sub-band(s), M is a positive integer not less than the K; the M frequency sub-bands are M sub-bands in a BWP respectively, any two of the M frequency sub-bands are orthogonal in frequency domain; the base station determines through K access detection(s) respectively that the K frequency sub-band(s) is(are) idle; the first information belongs to DCI specific to a terminal group, the UE being a terminal of the terminal group, or the first information belongs to DCI common to a cell; the first information comprises M bits, the M bits correspond to the M frequency sub-bands respectively; and a given bit is any bit of the M bits, the given bit being equal to 1 is used for indicating that a frequency sub-band of the M frequency sub-bands corresponding to the given bit belongs to the K frequency sub-bands, the given bit being equal to 0 is used for indicating that a frequency sub-band of the M frequency sub-bands corresponding to the given bit does not belong to the K frequency sub-bands; the second information belonging to a UE-specific DCI, and the second information being used for determining at least one of frequency domain resources occupied by a first radio signal and time domain resources occupied by the first radio signal; and

a second receiver, monitoring in a first frequency sub-band whether a first radio signal is transmitted, wherein the first frequency sub-band comprises the frequency domain resources occupied by the first radio signal;

wherein a transmitter of the first radio signal performs a first access detection or a second access detection; when the first frequency sub-band belongs to the K frequency sub-band(s) and the time domain resources occupied by the first radio signal belong to a first time window, the first access detection is performed, the first access detection is used for determining whether the first radio signal is transmitted in the first frequency sub-band; the first access detection comprises performing Q energy detection(s) respectively in Q time sub-pool(s) of a first frequency band, and acquiring Q detection value(s), end time of the Q time sub-pool(s) is not later than start time for transmission of the first radio signal; the first frequency band comprises the first frequency sub-band;

otherwise, when the first frequency sub-band does not belong to the K frequency sub-band(s) or the time domain resources occupied by the first radio signal do not belong to the first time window, the second access detection is performed, the second access detection is used for determining whether the first radio signal is transmitted in the first frequency sub-band; the second access detection comprises performing P energy detection(s) respectively in P time sub-pool(s) of a second frequency band, and acquiring P detection value(s), end time of the P time sub-pool(s) is not later than start time for transmission of the first radio signal; the second frequency band comprises the first frequency sub-band; and

detection time for the first access detection is a sum of time occupied by the Q time sub-pool(s), and detection time for the second access detection is a sum of time occupied by the P time sub-pool(s); the detection time for the first access detection is less than the detection time for the second access detection.

17 . The base station according to claim 16 , wherein when the first access detection is performed, if each one of Q1 detection value(s) of the Q detection value(s) is lower than a first reference threshold, the first radio signal is transmitted in the first frequency sub-band; otherwise, transmission of the first radio signal is dropped in the first frequency sub-band; Q is a positive integer, Q1 is a positive integer not greater than the Q;

when the second access detection is performed, if each one of P1 detection value(s) of the P detection value(s) is lower than the first reference threshold, the first radio signal is transmitted in the first frequency sub-band; otherwise, transmission of the first radio signal is dropped in the first frequency sub-band; P is a positive integer, P1 is a positive integer not greater than the P, the P1 is greater than the Q1.

18 . The base station according to claim 16 , wherein duration time for the first time window in time domain is a MCOT for the K frequency sub-band(s);

or, the transmitter of the first information needs to determine through access detection that the first frequency sub-band is not occupied after the first time window; the access detection is LBT, or the access detection is Clear Channel Assessment (CCA).

19 . The base station according to claim 17 , wherein duration time for the first time window in time domain is a MCOT for the K frequency sub-band(s);

or, the transmitter of the first information needs to determine through access detection that the first frequency sub-band is not occupied after the first time window; the access detection is LBT, or the access detection is Clear Channel Assessment (CCA).

20 . The base station according to claim 16 , wherein the transmitter of the first information performs M access detection(s), M frequency sub-band(s) comprises(comprise) the K frequency sub-band(s), the M access detection(s) corresponds(correspond) to M frequency sub-band(s) respectively, the K access detection(s) corresponding to the K frequency sub-band(s) of the M frequency sub-band(s) determines(determine) that all the K frequency sub-band(s) is(are) idle, any one access detection other than the K access detection(s) among the M access detection(s) determines that a frequency sub-band of the corresponding M frequency sub-band(s) is not idle.