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

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 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 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 first frequency sub-band comprises the frequency domain resources occupied by the first radio signal;
• 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.

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 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 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 first frequency sub-band comprises the frequency domain resources occupied by the first radio signal;
• 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.

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 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 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 first frequency sub-band comprises the frequency domain resources occupied by the first radio signal;
• 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.