Method and device in nodes used for wireless communication
The present disclosure provides a method and a device in a node used for wireless communications. A first receiver, monitoring in a first time-frequency resource pool and a second time-frequency resource pool; herein, a first instant of time is a boundary instant of the first time-frequency resource pool in time domain, the first instant of time being used to indicate a first time window; when time-domain resources occupied by the second time-frequency resource pool and the first time window are overlapping, the first time-frequency resource pool is associated with the second time-frequency resource pool; when time-domain resources occupied by the second time-frequency resource pool and the first time window are orthogonal, the first time-frequency resource pool is not associated with the second time-frequency resource pool.
1 . A user equipment (UE) for wireless communications, the UE comprising:
a processor configured to process data; and
a receiver configured to:
receive, via radio resource control (RRC) signaling, a configuration that links a first search space set and a second search space set, the configuration indicating that a first physical downlink control channel (PDCCH) candidate with index p in the first search space set is associated with a second PDCCH candidate with index p in the second search space set for repetition of the same downlink control information (DCI);
monitor for the first PDCCH candidate in the first search space set and the second PDCCH candidate in the second search space set, wherein the second search space set overlaps in time at least in-part with the first search space set; and
receive the same DCI in the first PDCCH candidate in the first search space set and in the second PDCCH candidate in the second search space set.
2 . The UE of claim 1 , wherein the first PDCCH candidate has a starting Control Channel Element (CCE) index, and the second PDCCH candidate has the same starting CCE index.
3 . The UE of claim 1 , wherein the first search space set is associated with a first Control Resource Set (CORESET) and the second search space set is associated with a second CORESET.
4 . The UE of claim 1 , wherein a first time-frequency resource pool is a first-type time-frequency resource pool, and a second time-frequency resource pool is a second-type time-frequency resource pool, the first-type time-frequency resource pool and the second-type time-frequency resource pool being defined in the first search space set and the second search space set, respectively; and
in a time domain: among a plurality of second-type time-frequency resource pools, the second time-frequency resource pool has an end time nearest to a start time of the first time-frequency resource pool.
5 . The UE of claim 3 , wherein the first CORESET is received from a first transmission receive point (TRP) and the second CORESET is received from a second TRP.
6 . The UE of claim 2 , wherein the first PDCCH candidate has a same number of CCEs as the second PDCCH candidate.
7 . A base station for wireless communications, the base station comprising:
a processor configured to process data; and
one or more transmitters collectively configured to:
transmit, via radio resource control (RRC) signaling, a configuration that links a first search space set and a second search space set, the configuration indicating that a first physical downlink control channel (PDCCH) candidate with index p in the first search space set is associated with a second PDCCH candidate with index p in the second search space set for repetition of the same downlink control information (DCI); and
transmit the same DCI in the first PDCCH candidate in the first search space set and in the second PDCCH candidate in the second search space set, wherein the second search space set overlaps in time at least in-part with the first search space set.
8 . The base station of claim 7 , wherein the first PDCCH candidate has a starting Control Channel Element (CCE) index, and the second PDCCH candidate has the same starting CCE index.
9 . The base station of claim 7 , wherein the first search space set is associated with a first Control Resource Set (CORESET) and the second search space set is associated with a second CORESET.
10 . The base station of claim 7 , wherein a first time-frequency resource pool is a first-type time-frequency resource pool, and a second time-frequency resource pool is a second-type time-frequency resource pool, the first-type time-frequency resource pool and the second-type time-frequency resource pool being defined in the first search space set and the second search space set, respectively; and
in a time domain: among a plurality of second-type time-frequency resource pools, the second time-frequency resource pool has an end time nearest to a start time of the first time-frequency resource pool.
11 . The base station of claim 8 , wherein the first PDCCH candidate has a same number of CCEs as the second PDCCH candidate.
12 . The base station of claim 9 , wherein the first CORESET is transmitted from a first transmission receive point (TRP) and the second CORESET is transmitted from a second TRP.
13 . A method performed by a user equipment (UE), the method comprising:
receiving, via radio resource control (RRC) signaling, a configuration that links a first search space set and a second search space set, the configuration indicating that a first physical downlink control channel (PDCCH) candidate with index p in the first search space set is associated with a second PDCCH candidate with index p in the second search space set for repetition of the same downlink control information (DCI);
monitoring for the first PDCCH candidate in the first search space set and the second PDCCH candidate in the second search space set, wherein the second search space set overlaps in time at least in-part with the first search space set; and
receiving the same DCI in the first PDCCH candidate in the first search space set and in the second PDCCH candidate in the second search space set.
14 . The method of claim 13 , wherein the first PDCCH candidate has a starting Control Channel Element (CCE) index, and the second PDCCH candidate has the same starting CCE index.
15 . The method of claim 13 , wherein the first search space set is associated with a first Control Resource Set (CORESET) and the second search space set is associated with a second CORESET.
16 . The method of claim 13 , wherein a first time-frequency resource pool is a first-type time-frequency resource pool, and a second time-frequency resource pool is a second-type time-frequency resource pool, the first-type time-frequency resource pool and the second-type time-frequency resource pool being defined in the first search space set and the second search space set, respectively; and
in a time domain: among a plurality of second-type time-frequency resource pools, the second time-frequency resource pool has an end time nearest to a start time of the first time-frequency resource pool.
17 . The method of claim 15 , wherein the first CORESET is received from a first transmission receive point (TRP) and the second CORESET is received from a second TRP.
18 . The method of claim 14 , wherein the first PDCCH candidate has a same number of CCEs as the second PDCCH candidate.