METHOD AND DEVICE IN NODES USED FOR WIRELESS COMMUNICATION

1 . A first node for wireless communications, comprising:

a first receiver, receiving a first information block; and

a second receiver, receiving a first signaling in a first time-frequency resource set, receiving a first signal in a second time-frequency resource set;

wherein the first information block is used to determine a first time-domain resource pool; the first signaling is used to determine at least one of frequency-domain resources or time-domain resources occupied by the second time-frequency resource set; the first signaling comprises a first field, and the first field in the first signaling is used to determine a first reference signal resource; a time offset between the first signaling and the first signal is a first time offset; when the first time offset is not less than a first threshold, a demodulation reference signal of a channel occupied by the first signal is QCLed (Quasi Co-Located) with the first reference signal resource; when the first time offset is less than a first threshold, a demodulation reference signal of a channel occupied by the first signal is QCLed with a second reference signal resource, whether time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool or whether time-domain resources occupied by the second time-frequency resource set belong to the first time-domain resource pool is used to determine the second reference signal resource.

2 . The first node according to claim 1 , wherein the first node monitors one or multiple CORESETs (Control Resource Sets) in an active BWP (Bandwidth Part) of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH (Physical Downlink Control Channel) QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being closest in time domain to the first signal in the first time-domain resource pool; when time-domain resources occupied by the first time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, the second time unit is time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being a time unit closest in time domain to the first signal outside the first time-domain resource pool.

3 . The first node according to claim 1 , wherein the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being closest in time domain to the first signal in the first time-domain resource pool; when time-domain resources occupied by the first time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, the second time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being a time unit closest in time domain to the first signal.

4 . The first node according to claim 1 , wherein the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the second time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit closest to the first signal in time domain in the first time-domain resource pool; when time-domain resources occupied by the second time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, and the second time unit is a time unit closest to the first signal in time domain outside the first time-domain resource pool.

5 . The first node according to claim 1 , wherein the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the second time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit closest to the first signal in time domain in the first time-domain resource pool; when time-domain resources occupied by the second time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, and the second time unit is a time unit closest to the first signal in time domain.

6 . The first node according to claim 1 , wherein a slot format adopted by a symbol occupied by the first time-domain resource pool in time domain is a first format, and time-domain resources corresponding to the first format support dynamic adjustment of uplink and downlink transmission directions, or time-domain resources corresponding to the first format support full duplex transmission.

7 . The first node according to claim 2 , wherein the first receiver receives a second information block and a third information block, the second information block is used to indicate QCL parameters corresponding to a PDCCH QCL indication of the first control resource set, and the third information block is used to indicate QCL parameters corresponding to a PDCCH QCL indication of the second CORESET.

8 . The first node according to claim 2 , wherein frequency-domain resources occupied by the first control resource set belong to a first frequency-domain resource set, and frequency-domain resources occupied by the second CORESET belong to a second frequency-domain resource set; the first frequency-domain resource set supports dynamic adjustment of uplink and downlink transmission directions, or the first frequency-domain resource set supports full duplex transmission; the second frequency-domain resource set does not support dynamic adjustment of uplink and downlink transmission directions, or the second frequency-domain resource set does not support full duplex transmission.

9 . A second node for wireless communications, comprising:

a first transmitter, transmitting a first information block; and

a second transmitter, transmitting a first signaling in a first time-frequency resource set, and transmitting a first signal in a second time-frequency resource set;

wherein the first information block is used to determine a first time-domain resource pool; the first signaling is used to determine at least one of frequency-domain resources or time-domain resources occupied by the second time-frequency resource set; the first signaling comprises a first field, and the first field in the first signaling is used to determine a first reference signal resource; a time offset between the first signaling and the first signal is a first time offset; when the first time offset is not less than a first threshold, a demodulation reference signal of a channel occupied by the first signal is QCLed with the first reference signal resource; when the first time offset is less than a first threshold, a demodulation reference signal of a channel occupied by the first signal is QCLed with a second reference signal resource, whether time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool or whether time-domain resources occupied by the second time-frequency resource set belong to the first time-domain resource pool is used to determine the second reference signal resource.

10 . The second node according to claim 9 , wherein a receiver of the first information block comprises a first node, and the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being closest in time domain to the first signal in the first time-domain resource pool; when time-domain resources occupied by the first time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, the second time unit is time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being a time unit closest in time domain to the first signal outside the first time-domain resource pool.

11 . The second node according to claim 9 , wherein a receiver of the first information block comprises a first node, and the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being closest in time domain to the first signal in the first time-domain resource pool; when time-domain resources occupied by the first time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, the second time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being a time unit closest in time domain to the first signal.

12 . The second node according to claim 9 , wherein a receiver of the first information block comprises a first node, and the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the second time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit closest to the first signal in time domain in the first time-domain resource pool; when time-domain resources occupied by the second time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, and the second time unit is a time unit closest to the first signal in time domain outside the first time-domain resource pool.

13 . The second node according to claim 9 , wherein a receiver of the first information block comprises a first node, and the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the second time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit closest to the first signal in time domain in the first time-domain resource pool; when time-domain resources occupied by the second time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, and the second time unit is a time unit closest to the first signal in time domain.

14 . The second node according to claim 9 , wherein a slot format adopted by a symbol occupied by the first time-domain resource pool in time domain is a first format, and time-domain resources corresponding to the first format support dynamic adjustment of uplink and downlink transmission directions, or time-domain resources corresponding to the first format support full duplex transmission.

15 . The second node according to claim 10 , wherein the first transmitter transmits a second information block and a third information block, the second information block is used to indicate QCL parameters corresponding to a PDCCH QCL indication of the first control resource set, and the third information block is used to indicate QCL parameters corresponding to a PDCCH QCL indication of the second CORESET.

16 . The second node according to claim 10 , wherein frequency-domain resources occupied by the first control resource set belong to a first frequency-domain resource set, and frequency-domain resources occupied by the second CORESET belong to a second frequency-domain resource set; the first frequency-domain resource set supports dynamic adjustment of uplink and downlink transmission directions, or the first frequency-domain resource set supports full duplex transmission; the second frequency-domain resource set does not support dynamic adjustment of uplink and downlink transmission directions, or the second frequency-domain resource set does not support full duplex transmission.

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

receiving a first information block; and

receiving a first signaling in a first time-frequency resource set, and receiving a first signal in a second time-frequency resource set;

wherein the first information block is used to determine a first time-domain resource pool; the first signaling is used to determine at least one of frequency-domain resources or time-domain resources occupied by the second time-frequency resource set; the first signaling comprises a first field, and the first field in the first signaling is used to determine a first reference signal resource; a time offset between the first signaling and the first signal is a first time offset; when the first time offset is not less than a first threshold, a demodulation reference signal of a channel occupied by the first signal is QCLed with the first reference signal resource; when the first time offset is less than a first threshold, a demodulation reference signal of a channel occupied by the first signal is QCLed with a second reference signal resource, whether time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool or whether time-domain resources occupied by the second time-frequency resource set belong to the first time-domain resource pool is used to determine the second reference signal resource.

18 . The method in a first node according to claim 17 , wherein the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being closest in time domain to the first signal in the first time-domain resource pool; when time-domain resources occupied by the first time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, the second time unit is time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being a time unit closest in time domain to the first signal outside the first time-domain resource pool.

19 . The method in a first node according to claim 17 , wherein the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the first time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being closest in time domain to the first signal in the first time-domain resource pool; when time-domain resources occupied by the first time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, the second time unit is a time unit comprising one or multiple CORESETs monitored by the first node in an active BWP of a serving cell and being a time unit closest in time domain to the first signal.

20 . The method in a first node according to claim 17 , wherein the first node monitors one or multiple CORESETs in an active BWP of a serving cell it monitors; the first time offset is less than the first threshold; when time-domain resources occupied by the second time-frequency resource set belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a first control resource set, the first CORESET is a lowest-indexed CORESET associated with a monitored search space in a first time unit, and the first time unit is a time unit closest to the first signal in time domain in the first time-domain resource pool; when time-domain resources occupied by the second time-frequency resource set do not belong to the first time-domain resource pool, the second reference signal resource is related to QCL parameters of a PDCCH QCL indication used for a second control resource set, the second CORESET is a lowest-indexed CORESET associated with a monitored search space in a second time unit, and the second time unit is a time unit closest to the first signal in time domain outside the first time-domain resource pool.