Method and device in nodes used for wireless communication
The present application discloses a method and a device in a node for wireless communications. A node receives first information, the first information being used to determine a target cell, the target cell scheduling a characteristic cell; monitors M Control Resource Elements in a first time window, the M Control Resource Elements being occupied by a control channel candidate; a sub-band to which any of the M Control Resource Elements belongs in frequency domain belongs to a first sub-band set; a serving cell to which any sub-band comprised in the first sub-band set belongs is in the scheduling cell set; a subcarrier spacing of a subcarrier comprised in the first sub-band set is equal to a first subcarrier spacing; the first subcarrier spacing is used to determine a time length of the first time window. The present disclosure guarantees the reception of scheduling.
1 . A method performed by a user equipment (UE), the method comprising:
receiving radio resource control (RRC) signaling indicating a target cell, wherein the target cell is used to schedule a primary cell (PCell);
determining whether a scheduling cell set includes the target cell;
determining whether the target cell is the same as the PCell; and
monitoring a plurality of non-overlapped control channel elements (CCEs) on an active downlink (DL) bandwidth part (BWP) of a serving cell within a slot, wherein each monitored CCE is included in at least one physical downlink control channel (PDCCH) candidate;
wherein subcarriers of a first sub-band set have a first subcarrier spacing (SCS), and the first SCS determines a duration of the slot; and
wherein a number of the monitored non-overlapped CCEs is less than or equal to a threshold, the threshold being determined based on at least one of: (i) whether the scheduling cell set includes the target cell, or (ii) whether the target cell is the PCell.
2 . The method of claim 1 , wherein the number of the monitored non-overlapped CCEs is an integer greater than 1 .
3 . The method of claim 1 , wherein the RRC signaling includes a CrossCarrierSchedulingConfig information element.
4 . The method of claim 1 , further comprising:
receiving RRC signaling that configures a cell group including a plurality of serving cells, wherein the target cell and the PCell belong to the cell group, and wherein a scheduling cell set and a scheduled cell set are subsets of the cell group.
5 . The method of claim 1 , wherein two of the monitored CCEs belong to different control resource sets (CORESETs), or the PDCCH candidate that include those CCEs start in different orthogonal frequency division multiplexing (OFDM) symbols in the slot.
6 . The method of claim 1 , wherein the first sub-band set corresponds to frequency-domain monitoring locations configured for a search space set on the serving cell.
7 . The method of claim 1 , wherein the threshold is determined by applying a target proportional value to a characteristic sum value and rounding the sum value down to the nearest integer.
8 . The method of claim 7 , wherein the target proportional value is selected from a first proportional value and a second proportional value, wherein the first proportional value is different than the second proportional value.
9 . The method of claim 1 , wherein the first SCS is selected from a set of candidate SCS values, each candidate SCS corresponding to a parameter, and the threshold is determined from a target value derived from the parameter, the target value being rounded down to an integer.
10 . The method of claim 1 , wherein monitoring the PDCCH candidates is performed by blind decoding the candidates that occupy the monitored CCEs.
11 . A user equipment (UE), comprising:
a transceiver; and
a processor;
wherein the transceiver and the processor are configured to:
receive radio resource control (RRC) signaling indicating a target cell, wherein the target cell is used to schedule a primary cell (PCell);
determine whether a scheduling cell set includes the target cell;
determine whether the target cell is the same as the PCell; and
monitor a plurality of non-overlapped control channel elements (CCEs) on an active downlink (DL) bandwidth part (BWP) of a serving cell within a slot, wherein each monitored CCE is included in at least one physical downlink control channel (PDCCH) candidate;
wherein subcarriers of a first sub-band set have a first subcarrier spacing (SCS), and the first SCS determines a duration of the slot; and
wherein a number of the monitored non-overlapped CCEs is less than or equal to a threshold, the threshold being determined based on at least one of: (i) whether the scheduling cell set includes the target cell, or (ii) whether the target cell is the PCell.
12 . The UE of claim 11 , wherein the number of the monitored non-overlapped CCEs is an integer greater than 1 .
13 . The UE of claim 11 , wherein the RRC signaling includes a CrossCarrierSchedulingConfig information element.
14 . The UE of claim 11 , wherein the transceiver and the processor are further configured to:
receive RRC signaling that configures a cell group including a plurality of serving cells, wherein the target cell and the PCell belong to the cell group, and wherein a scheduling cell set and a scheduled cell set are subsets of the cell group.
15 . The UE of claim 11 ,wherein two of the monitored CCEs belong to different control resource sets (CORESETs), or the PDCCH candidate that include those CCEs start in different orthogonal frequency division multiplexing (OFDM) symbols in the slot.
16 . The UE of claim 11 , wherein the first sub-band set corresponds to frequency-domain monitoring locations configured for a search space set on the serving cell.
17 . The UE of claim 11 , wherein the threshold is determined by applying a target proportional value to a characteristic sum value and rounding the sum value down to the nearest integer.
18 . The UE of claim 17 , wherein the target proportional value is selected from a first proportional value and a second proportional value, wherein the first proportional value is different than the second proportional value.
19 . The UE of claim 11 , wherein the first SCS is selected from a set of candidate SCS values, each candidate SCS corresponding to a parameter, and the threshold is determined from a target value derived from the parameter, the target value being rounded down to an integer.
20 . The UE of claim 11 , wherein the monitoring of the PDCCH candidates is performed by blind decoding the candidates that occupy the monitored CCEs.