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, the first information block indicating a target identity; and

a first transceiver, receiving a first signal in a first resource set, or transmitting a first signal in a first resource set, with a demodulation reference signal (DMRS) of a channel occupied by the first signal being quasi co-located with a first target reference signal resource;

wherein the target identity is associated with K1 first-type reference signal resources, and the K1 first-type reference signal resources are associated with a first cell, K1 being a positive integer greater than 1; the first target reference signal resource is one of the K1 first-type reference signal resources; a frequency-domain resource occupied by the first resource set belongs to the first cell; at least one of a time-domain resource occupied by the first resource set or the frequency-domain resource occupied by the first resource set is used to determine the first target reference signal resource from the K1 first-type reference signal resources.

2 . The first node according to claim 1 , characterized in that the target identity is associated with any candidate reference signal resource set of Q1 candidate reference signal resource sets, the Q1 candidate reference signal resource sets being associated with Q2 cells; a first reference signal resource set comprises the K1 first-type reference signal resources; the first reference signal resource set is one of the Q1 candidate reference signal resource sets; the first resource set is used to determine the first reference signal resource set from the Q1 candidate reference signal resource sets; Q1 is a positive integer greater than 1, and Q2 is a positive integer greater than 1.

3 . The first node according to claim 1 , characterized in that the first transceiver receives or transmits a second signal in a second resource set, the target identity being used to determine a second target reference signal resource, the second target reference signal resource being one of the K1 first-type reference signal resources; at least one of the time-domain resource occupied by the first resource set or the frequency-domain resource occupied by the first resource set is used to determine whether the second target reference signal resource is QCL with the first target reference signal resource.

4 . The first node according to claim 2 , characterized in that there exist a first physical channel and a second physical channel respectively in two different cells among the Q2 cells, and a same TCI state ID is used to indicate or update or activate a QCL parameter of the first physical channel or a QCL parameter of the second physical channel; the first physical channel and the second physical channel are both PDCCHs or the first physical channel and the second physical channel are both PDSCHs, or, the first physical channel and the second physical channel are both PUCCHs or the first physical channel and the second physical channel are both PUSCHs.

5 . The first node according to claim 3 , characterized in that the first receiver receives a second information block, the second information block indicating that the first signal and the second signal use a same TCI state.

6 . The first node according to claim 1 , characterized in that K1 is equal to 2, the K1 first-type reference signal resources including a first reference signal resource and a second reference signal resource; the time-domain resource occupied by the first resource set comprises a first symbol set; when a slot format used by a symbol in the first symbol set is a first format, the first target reference signal resource is the first reference signal resource; when a slot format used by a symbol in the first symbol set is a format other than the first format, the first target reference signal resource is the second reference signal resource.

7 . The first node according to claim 1 , characterized in that K1 is equal to 2, the K1 first-type reference signal resources including a first reference signal resource and a second reference signal resource; when the frequency-domain resource occupied by the first resource set belongs to a first frequency-domain resource set, the first target reference signal resource is the first reference signal resource; when the first resource set comprises a frequency-domain resource not belonging to the first frequency-domain resource set, the first target reference signal resource is the second reference signal resource.

8 . The first node according to claim 1 , characterized in that the first receiver receives a third information block, the third information block indicating M1 candidate reference signal resource pools, the M1 candidate reference signal resource pools respectively corresponding to M1 first-type identities, the target identity being one of the M1 first-type identities; the target identity is used to determine a target candidate reference signal resource pool from the M1 candidate reference signal resource pools, the target candidate reference signal resource pool comprising the Q1 candidate reference signal resource sets; M1 is a positive integer greater than 1.

9 . A second node for wireless communications, comprising:

a first transmitter, transmitting a first information block, the first information block indicating a target identity; and

a second transceiver, transmitting a first signal in a first resource set, or receiving a first signal in a first resource set, with a demodulation reference signal (DMRS) of a channel occupied by the first signal being quasi co-located with a first target reference signal resource;

wherein the target identity is associated with K1 first-type reference signal resources, and the K1 first-type reference signal resources are associated with a first cell, K1 being a positive integer greater than 1; the first target reference signal resource is one of the K1 first-type reference signal resources; a frequency-domain resource occupied by the first resource set belongs to the first cell; at least one of a time-domain resource occupied by the first resource set or the frequency-domain resource occupied by the first resource set is used to determine the first target reference signal resource from the K1 first-type reference signal resources.

10 . The second node according to claim 9 , characterized in that the target identity is associated with any candidate reference signal resource set of Q1 candidate reference signal resource sets, the Q1 candidate reference signal resource sets being associated with Q2 cells; a first reference signal resource set comprises the K1 first-type reference signal resources; the first reference signal resource set is one of the Q1 candidate reference signal resource sets; the first resource set is used to determine the first reference signal resource set from the Q1 candidate reference signal resource sets; Q1 is a positive integer greater than 1, and Q2 is a positive integer greater than 1.

11 . The second node according to claim 9 , characterized in that the second transceiver transmits or receives a second signal in a second resource set, the target identity being used to determine a second target reference signal resource, the second target reference signal resource being one of the K1 first-type reference signal resources; at least one of the time-domain resource occupied by the first resource set or the frequency-domain resource occupied by the first resource set is used to determine whether the second target reference signal resource is QCL with the first target reference signal resource.

12 . The second node according to claim 10 , characterized in that there exist a first physical channel and a second physical channel respectively in two different cells among the Q2 cells, and a same TCI state ID is used to indicate or update or activate a QCL parameter of the first physical channel or a QCL parameter of the second physical channel; the first physical channel and the second physical channel are both PDCCHs or the first physical channel and the second physical channel are both PDSCHs, or, the first physical channel and the second physical channel are both PUCCHs or the first physical channel and the second physical channel are both PUSCHs.

13 . The second node according to claim 11 , characterized in that the first transmitter transmits a second information block, the second information block indicating that the first signal and the second signal use a same TCI state.

14 . The second node according to claim 9 , characterized in that K1 is equal to 2, the K1 first-type reference signal resources including a first reference signal resource and a second reference signal resource; the time-domain resource occupied by the first resource set comprises a first symbol set; when a slot format used by a symbol in the first symbol set is a first format, the first target reference signal resource is the first reference signal resource; when a slot format used by a symbol in the first symbol set is a format other than the first format, the first target reference signal resource is the second reference signal resource.

15 . The second node according to claim 9 , characterized in that K1 is equal to 2, the K1 first-type reference signal resources including a first reference signal resource and a second reference signal resource; when the frequency-domain resource occupied by the first resource set belongs to a first frequency-domain resource set, the first target reference signal resource is the first reference signal resource; when the first resource set comprises a frequency-domain resource not belonging to the first frequency-domain resource set, the first target reference signal resource is the second reference signal resource.

16 . The second node according to claim 9 , characterized in that the first transmitter transmits a third information block, the third information block indicating M1 candidate reference signal resource pools, the M1 candidate reference signal resource pools respectively corresponding to M1 first-type identities, the target identity being one of the M1 first-type identities; the target identity is used to determine a target candidate reference signal resource pool from the M1 candidate reference signal resource pools, the target candidate reference signal resource pool comprising the Q1 candidate reference signal resource sets; M1 is a positive integer greater than 1.

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

receiving a first information block, the first information block indicating a target identity; and

receiving a first signal in a first resource set, or transmitting a first signal in a first resource set, with a demodulation reference signal (DMRS) of a channel occupied by the first signal being quasi co-located with a first target reference signal resource;

wherein the target identity is associated with K1 first-type reference signal resources, and the K1 first-type reference signal resources are associated with a first cell, K1 being a positive integer greater than 1; the first target reference signal resource is one of the K1 first-type reference signal resources; a frequency-domain resource occupied by the first resource set belongs to the first cell; at least one of a time-domain resource occupied by the first resource set or the frequency-domain resource occupied by the first resource set is used to determine the first target reference signal resource from the K1 first-type reference signal resources.

18 . The method in the first node according to claim 17 , characterized in that the target identity is associated with any candidate reference signal resource set of Q1 candidate reference signal resource sets, the Q1 candidate reference signal resource sets being associated with Q2 cells; a first reference signal resource set comprises the K1 first-type reference signal resources; the first reference signal resource set is one of the Q1 candidate reference signal resource sets; the first resource set is used to determine the first reference signal resource set from the Q1 candidate reference signal resource sets; Q1 is a positive integer greater than 1, and Q2 is a positive integer greater than 1.

19 . The method in the first node according to claim 17 , characterized in comprising:

receiving or transmitting a second signal in a second resource set;

wherein the target identity being used to determine a second target reference signal resource, the second target reference signal resource being one of the K1 first-type reference signal resources; at least one of the time-domain resource occupied by the first resource set or the frequency-domain resource occupied by the first resource set is used to determine whether the second target reference signal resource is QCL with the first target reference signal resource.

20 . The method in the first node according to claim 18 , characterized in that there exist a first physical channel and a second physical channel respectively in two different cells among the Q2 cells, and a same TCI state ID is used to indicate or update or activate a QCL parameter of the first physical channel or a QCL parameter of the second physical channel; the first physical channel and the second physical channel are both PDCCHs or the first physical channel and the second physical channel are both PDSCHs, or, the first physical channel and the second physical channel are both PUCCHs or the first physical channel and the second physical channel are both PUSCHs.