METHOD AND DEVICE IN NODES USED FOR WIRELESS COMMUNICATION

1 . A first node for wireless communications, comprising:

a first receiver, receiving a reference information block;

wherein the reference information block is used to configure a first CORESET (Control Resource Set) pool on a first BWP (BandWidth Part), and the first CORESET pool comprises at least one CORESET: a first RS (Reference Signal) resource set is used for a radio link quality assessment of the first BWP, the first RS resource set depends on a first TCI (Transmission Configuration Indication) state set, the first TCI state set comprises at least one TCI state of at least one CORESET in the first CORESET pool; a target CORESET is a CORESET including two TCI states in the first CORESET pool; the two TCI states of the target CORESET respectively indicate QCL (quasi co-location) information of a DMRS (Demodulation Reference Signal) antenna port for a PDCCH reception in the target CORESET in different PDCCH monitoring occasions; the first TCI state set comprises only one of the two TCI states of the target CORESET.

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

the first receiver, receiving a first information block;

wherein the first information block is used to determine a reference time-domain resource set: the two TCI states of the target CORESET respectively indicate QCL information of a DMRS antenna port for a PDCCH (Physical Downlink Control Channel) reception in the target CORESET in a PDCCH monitoring occasion in the reference time domain resource set, and QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion outside the reference time domain resource set.

3 . The first node according to claim 2 , wherein the first TCI state set comprises a TCI state indicating QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion outside the reference time domain resource set in the two TCI states of the target CORESET.

4 . The first node according to claim 1 , wherein

configuration information of the first serving cell does not comprise a higher-layer parameter configuring SFN (Single Frequency Network) scheme for PDCCH;

or,

configuration information of the target CORESET does not comprise a higher-layer parameter configuring SFN scheme for PDCCH;

or,

a reference CORESET is a CORESET comprising two TCI states in the first CORESET pool: when a DMRS port of a PDCCH in the reference CORESET and RSs indicated by the two TCI states of the reference CORESET are QCLed (quasi co-located), the first TCI state set comprises the two TCI states of the reference CORESET: when the two TCI states of the reference CORESET respectively indicate QCL information of a DMRS antenna port for a PDCCH reception in the reference CORESET in different PDCCH monitoring occasions, the first TCI state set comprises only one of the two TCI states of the reference CORESET.

5 . The first node according to claim 1 , wherein

when a value of a target counter is equal to or greater than a target threshold, a beam failure recovery for a first serving cell is triggered: wherein the first BWP is a BWP of the first serving cell: when the radio link quality assessed according to the first RS resource set is worse than a reference threshold, physical layer of the first node transmits a beam failure instance indication for the first serving cell to its higher layer: the target counter is used for counting the beam failure instance indication for the first serving cell;

or,

the radio link quality assessment of the first BWP comprises: respectively assessing radio link quality according to the first RS resource set and a second RS resource set: the reference information block is used to configure a second CORESET pool on the first BWP, the second CORESET pool comprises at least one CORESET, the second RS resource set depends on a second TCI state set, and the second TCI state set comprises at least one TCI state of at least one CORESET in the second CORESET pool: when the radio link quality assessed according to the first RS resource set is worse than a reference threshold, physical layer of the first node transmits a beam failure instance indication for the first RS resource set to its higher layer: when the radio link quality assessed according to the second RS resource set is worse than the reference threshold, physical layer of the first node transmits a beam failure instance indication for the second RS resource set to its higher layer.

6 . A second node for wireless communications, comprising:

a second transmitter, transmitting a reference information block;

wherein the reference information block is used to configure a first CORESET (Control Resource Set) pool on a first BWP, and the first CORESET pool comprises at least one CORESET: a first RS (Reference Signal) resource set is used for a radio link quality assessment of the first BWP, the first RS resource set depends on a first TCI state set, the first TCI state set comprises at least one TCI state of at least one CORESET in the first CORESET pool: a target CORESET is a CORESET including two TCI states in the first CORESET pool: the two TCI states of the target CORESET respectively indicate QCL (quasi co-location) information of a DMRS antenna port for a PDCCH reception in the target CORESET in different PDCCH monitoring occasions; the first TCI state set comprises only one of the two TCI states of the target CORESET.

7 . The second node according to claim 6 , comprising:

the second transmitter, transmitting a first information block;

wherein the first information block is used to determine a reference time-domain resource set; the two TCI states of the target CORESET respectively indicate QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion in the reference time domain resource set, and QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion outside the reference time domain resource set.

8 . The second node according to claim 7 , wherein the first TCI state set comprises a TCI state indicating QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion outside the reference time domain resource set in the two TCI states of the target CORESET.

9 . The second node according to claim 6 , wherein

configuration information of the first serving cell does not comprise a higher-layer parameter configuring SFN (Single Frequency Network) scheme for PDCCH for PDCCH;

or,

configuration information of the target CORESET does not comprise a higher-layer parameter configuring SFN scheme for PDCCH;

or,

a reference CORESET is a CORESET including two TCI states in the first CORESET pool; when a DMRS port of a PDCCH in the reference CORESET and RSs indicated by the two TCI states of the reference CORESET are QCLed, the first TCI state set comprises the two TCI states of the reference CORESET: when the two TCI states of the reference CORESET respectively indicate QCL information of a DMRS antenna port for a PDCCH reception in the reference CORESET in different PDCCH monitoring occasions, the first TCI state set comprises only one of the two TCI states of the reference CORESET.

10 . The second node according to claim 6 , wherein

when a value of a target counter is equal to or greater than a target threshold, a beam failure recovery for a first serving cell is triggered: wherein the first BWP is a BWP of the first serving cell; when the radio link quality assessed according to the first RS resource set is worse than a reference threshold, physical layer of a receiver of the reference information block transmits a beam failure instance indication for the first serving cell to its higher layer: the target counter is used by the receiver of the reference information block for counting the beam failure instance indication for the first serving cell;

or,

the radio link quality assessment of the first BWP comprises: respectively assessing radio link quality according to the first RS resource set and a second RS resource set: the reference information block is used to configure a second CORESET pool on the first BWP, the second CORESET pool comprises at least one CORESET, the second RS resource set depends on a second TCI state set, and the second TCI state set comprises at least one TCI state of at least one CORESET in the second CORESET pool: when the radio link quality assessed according to the first RS resource set is worse than a reference threshold, physical layer of a receiver of the reference information block transmits a beam failure instance indication for the first RS resource set to its higher layer: when the radio link quality assessed according to the second RS resource set is worse than the reference threshold, physical layer of the receiver of the reference information block transmits a beam failure instance indication for the second RS resource set to its higher layer.

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

receiving a reference information block;

wherein the reference information block is used to configure a first CORESET (Control Resource Set) pool on a first BWP, and the first CORESET pool comprises at least one CORESET: a first RS (Reference Signal) resource set is used for a radio link quality assessment of the first BWP, the first RS resource set depends on a first TCI state set, the first TCI state set comprises at least one TCI state of at least one CORESET in the first CORESET pool: a target CORESET is a CORESET including two TCI states in the first CORESET pool: the two TCI states of the target CORESET respectively indicate QCL (quasi co-location) information of a DMRS antenna port for a PDCCH reception in the target CORESET in different PDCCH monitoring occasions: the first TCI state set comprises only one of the two TCI states of the target CORESET.

12 . The method according to claim 11 , comprising:

receiving a first information block;

wherein the first information block is used to determine a reference time-domain resource set: the two TCI states of the target CORESET respectively indicate QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion in the reference time domain resource set, and QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion outside the reference time domain resource set.

13 . The method according to claim 12 , wherein the first TCI state set comprises a TCI state indicating QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion outside the reference time domain resource set in the two TCI states of the target CORESET.

14 . The method according to claim 11 , wherein

configuration information of the first serving cell does not comprise a higher-layer parameter configuring SFN (Single Frequency Network) scheme for PDCCH for PDCCH;

or,

configuration information of the target CORESET does not comprise a higher-layer parameter configuring SFN scheme for PDCCH;

or,

a reference CORESET is a CORESET comprising two TCI states in the first CORESET pool: when a DMRS port of a PDCCH in the reference CORESET and RSs indicated by the two TCI states of the reference CORESET are QCLed, the first TCI state set comprises the two TCI states of the reference CORESET: when the two TCI states of the reference CORESET respectively indicate QCL information of a DMRS antenna port for a PDCCH reception in the reference CORESET in different PDCCH monitoring occasions, the first TCI state set comprises only one of the two TCI states of the reference CORESET.

15 . The method according to claim 11 , wherein

when a value of a target counter is equal to or greater than a target threshold, a beam failure recovery for a first serving cell is triggered: wherein the first BWP is a BWP of the first serving cell; when the radio link quality assessed according to the first RS resource set is worse than a reference threshold, physical layer of the first node transmits a beam failure instance indication for the first serving cell to its higher layer: the target counter is used for counting the beam failure instance indication for the first serving cell;

or,

the radio link quality assessment of the first BWP comprises: respectively assessing radio link quality according to the first RS resource set and a second RS resource set; the reference information block is used to configure a second CORESET pool on the first BWP, the second CORESET pool comprises at least one CORESET, the second RS resource set depends on a second TCI state set, and the second TCI state set comprises at least one TCI state of at least one CORESET in the second CORESET pool; when the radio link quality assessed according to the first RS resource set is worse than a reference threshold, physical layer of the first node transmits a beam failure instance indication for the first RS resource set to its higher layer: when the radio link quality assessed according to the second RS resource set is worse than the reference threshold, physical layer of the first node transmits a beam failure instance indication for the second RS resource set to its higher layer.

16 . A method in a second node for wireless communications, comprising:

transmitting a reference information block;

wherein the reference information block is used to configure a first CORESET (Control Resource Set) pool on a first BWP, and the first CORESET pool comprises at least one CORESET; a first RS (Reference Signal) resource set is used for a radio link quality assessment of the first BWP, the first RS resource set depends on a first TCI state set, the first TCI state set comprises at least one TCI state of at least one CORESET in the first CORESET pool: a target CORESET is a CORESET including two TCI states in the first CORESET pool; the two TCI states of the target CORESET respectively indicate QCL (quasi co-location) information of a DMRS antenna port for a PDCCH reception in the target CORESET in different PDCCH monitoring occasions; the first TCI state set comprises only one of the two TCI states of the target CORESET.

17 . The method according to claim 16 , comprising:

transmitting a first information block;

wherein the first information block is used to determine a reference time-domain resource set; the two TCI states of the target CORESET respectively indicate QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion in the reference time domain resource set, and QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion outside the reference time domain resource set.

18 . The method according to claim 17 , wherein the first TCI state set comprises a TCI state indicating QCL information of a DMRS antenna port for a PDCCH reception in the target CORESET in a PDCCH monitoring occasion outside the reference time domain resource set in the two TCI states of the target CORESET.

19 . The method according to claim 16 , wherein

configuration information of the first serving cell does not comprise a higher-layer parameter configuring SFN (Single Frequency Network) scheme for PDCCH for PDCCH;

or,

configuration information of the target CORESET does not comprise a higher-layer parameter configuring SFN scheme for PDCCH;

or,

a reference CORESET is a CORESET including two TCI states in the first CORESET pool: when a DMRS port of a PDCCH in the reference CORESET and RSs indicated by the two TCI states of the reference CORESET are QCLed, the first TCI state set comprises the two TCI states of the reference CORESET: when the two TCI states of the reference CORESET respectively indicate QCL information of a DMRS antenna port for a PDCCH reception in the reference CORESET in different PDCCH monitoring occasions, the first TCI state set comprises only one of the two TCI states of the reference CORESET.

20 . The method according to claim 16 , wherein

when a value of a target counter is equal to or greater than a target threshold, a beam failure recovery for a first serving cell is triggered: wherein the first BWP is a BWP of the first serving cell; when the radio link quality assessed according to the first RS resource set is worse than a reference threshold, physical layer of a receiver of the reference information block transmits a beam failure instance indication for the first serving cell to its higher layer; the target counter is used by the receiver of the reference information block for counting the beam failure instance indication for the first serving cell;

or,

the radio link quality assessment of the first BWP comprises: respectively assessing radio link quality according to the first RS resource set and a second RS resource set; the reference information block is used to configure a second CORESET pool on the first BWP, the second CORESET pool comprises at least one CORESET, the second RS resource set depends on a second TCI state set, and the second TCI state set comprises at least one TCI state of at least one CORESET in the second CORESET pool; when the radio link quality assessed according to the first RS resource set is worse than a reference threshold, physical layer of a receiver of the reference information block transmits a beam failure instance indication for the first RS resource set to its higher layer: when the radio link quality assessed according to the second RS resource set is worse than the reference threshold, physical layer of the receiver of the reference information block transmits a beam failure instance indication for the second RS resource set to its higher layer.