METHOD AND DEVICE IN NODES USED FOR WIRELESS COMMUNICATION

1 . A first node for wireless communications, comprising:

a first receiver, receiving a first signaling and a second signaling, the first signaling indicating that Q SSBs are transmitted, and the Q SSBs respectively corresponding to Q SSB indexes, the Q SSB indexes respectively being used to determine Q time-domain resources, Q being a positive integer greater than 1; determining a first time-domain resource based on at least a first integer, a candidate of the first time-domain resource constituting a first time-domain resource pool; monitoring a downlink control signaling in the first time-domain resource;

wherein the first integer is one of the Q SSB indexes, and the first time-domain resource belongs to a time-domain resource in the first time-domain resource pool, and the first time-domain resource pool is one of a first candidate pool and a second candidate pool; the first candidate pool comprises Q1 time-domain resources, and the second candidate pool comprises Q2 time-domain resources; any of the Q1 time-domain resources is one of the Q time-domain resources, and at least one of the Q1 time-domain resources does not belong to the Q2 time-domain resources; the Q2 time-domain resources are a true subset of the Q time-domain resources; the second signaling is used to determine the Q2 time-domain resources; the Q SSBs are associated with a first PCI.

2 . The first node according to claim 1 , wherein the second signaling indicates Q2 SSB indexes in the Q SSB indexes, and the Q2 SSB indexes are respectively used to determine the Q2 time-domain resources.

3 . The first node according to claim 2 , wherein at least for the first node, SSBs corresponding to the Q2 SSB indexes are considered not actually transmitted.

4 . The first node according to claim 1 , wherein for any of the Q2 time-domain resources, the Q time-domain resources comprise a corresponding time-domain resource; the second signaling is used to indicate the any time-domain resource from the corresponding time-domain resource.

5 . The first node according to claim 1 , wherein the Q time-domain resources each hold Q groups of CSS (Common Search Space) sets, and each of Q groups of CSS sets comprises at least one CSS set.

6 . The first node according to claim 1 , comprising:

the first receiver, receiving a third signaling, the third signaling being used to determine whether the first time-domain resource pool is a first candidate pool or a second candidate pool.

7 . The first node according to claim 1 , wherein whether the first time-domain resource pool is a first candidate pool or a second candidate pool is related to a first RNTI, and the downlink control signaling is identified by the first RNTI; or, whether the first time-domain resource pool is a first candidate pool or second candidate pool is related to a CORESET accommodating the downlink control signaling.

8 . A second node for wireless communications, comprising:

a first transmitter, transmitting a first signaling and a second signaling, the first signaling indicating that Q SSBs are transmitted, and the Q SSBs respectively corresponding to Q SSB indexes, the Q SSB indexes respectively being used to determine Q time-domain resources, Q being a positive integer greater than 1;

wherein at least a first integer is used to determine a first time-domain resource, and a candidate of the first time-domain resource constitutes a first time-domain resource pool; the first time-domain resource is reserved for a downlink control signaling; the first integer is one of the Q SSB indexes, and the first time-domain resource belongs to a time-domain resource in the first time-domain resource pool, and the first time-domain resource pool is one of a first candidate pool and a second candidate pool; the first candidate pool comprises Q1 time-domain resources, and the second candidate pool comprises Q2 time-domain resources; any of the Q1 time-domain resources is one of the Q time-domain resources, and at least one of the Q1 time-domain resources does not belong to the Q2 time-domain resources; the Q2 time-domain resources are a true subset of the Q time-domain resources; the second signaling is used to determine the Q2 time-domain resources; the Q SSBs are associated with a first PCI.

9 . The second node according to claim 8 , wherein the first transmitter transmits a third signaling, the third signaling is used to determine whether the first time-domain resource pool is a first candidate pool or a second candidate pool.

10 . The second node according to claim 8 , wherein the second signaling indicates Q2 SSB indexes in the Q SSB indexes, and the Q2 SSB indexes are respectively used to determine the Q2 time-domain resources.

11 . The second node according to claim 10 , wherein SSBs corresponding to the Q2 SSB indexes are considered not actually transmitted by a receiver of the second signaling.

12 . The second node according to claim 8 , wherein for any of the Q2 time-domain resources, the Q time-domain resources comprise a corresponding time-domain resource; the second signaling is used to indicate the any time-domain resource from the corresponding time-domain resource.

13 . The second node according to claim 8 , wherein the Q time-domain resources each hold Q groups of CSS sets, and each of Q groups of CSS sets comprises at least one CSS set.

14 . The second node according to claim 8 , wherein whether the first time-domain resource pool is a first candidate pool or a second candidate pool is related to a first RNTI, and the downlink control signaling is identified by the first RNTI; or, whether the first time-domain resource pool is a first candidate pool or second candidate pool is related to a CORESET accommodating the downlink control signaling.

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

receiving a first signaling and a second signaling, the first signaling indicating that Q SSBs are transmitted, and the Q SSBs respectively corresponding to Q SSB indexes, the Q SSB indexes respectively being used to determine Q time-domain resources, Q being a positive integer greater than 1; determining a first time-domain resource based on at least a first integer, a candidate of the first time-domain resource constituting a first time-domain resource pool; monitoring a downlink control signaling in the first time-domain resource;

wherein the first integer is one of the Q SSB indexes, and the first time-domain resource belongs to a time-domain resource in the first time-domain resource pool, and the first time-domain resource pool is one of a first candidate pool and a second candidate pool; the first candidate pool comprises Q1 time-domain resources, and the second candidate pool comprises Q2 time-domain resources; any of the Q1 time-domain resources is one of the Q time-domain resources, and at least one of the Q1 time-domain resources does not belong to the Q2 time-domain resources; the Q2 time-domain resources are a true subset of the Q time-domain resources; the second signaling is used to determine the Q2 time-domain resources; the Q SSBs are associated with a first PCI.

16 . The method in the first node according to claim 15 , wherein the second signaling indicates Q2 SSB indexes in the Q SSB indexes, and the Q2 SSB indexes are respectively used to determine the Q2 time-domain resources.

17 . The method in the first node according to claim 16 , wherein at least for the first node, SSBs corresponding to the Q2 SSB indexes are considered not actually transmitted.

18 . The method in the first node according to claim 15 , wherein for any of the Q2 time-domain resources, the Q time-domain resources comprise a corresponding time-domain resource; the second signaling is used to indicate the any time-domain resource from the corresponding time-domain resource.

19 . The method in the first node according to claim 15 , wherein the Q time-domain resources each hold Q groups of CSS sets, and each of Q groups of CSS sets comprises at least one CSS set;

or,

whether the first time-domain resource pool is a first candidate pool or a second candidate pool is related to a first RNTI, and the downlink control signaling is identified by the first RNTI; or, whether the first time-domain resource pool is a first candidate pool or second candidate pool is related to a CORESET accommodating the downlink control signaling.

20 . The method in the first node according to claim 15 , comprising:

receiving a third signaling, the third signaling being used to determine whether the first time-domain resource pool is a first candidate pool or a second candidate pool.