User equipment and method thereof for wireless communication
A method and a device in nodes used for wireless communications. A node receives a first information block; and monitors M1 control channel candidates in a first time window, and the M1 control channel candidates occupy M2 control channel elements; the first information block is used to indicate a scheduled cell set, and serving cells comprised by the scheduled cell set are divided into a first cell group and a second cell group; the scheduled cell set comprises a target cell, and K1 scheduling cells are capable of scheduling the target cell; a number of control resource pools of the K1 scheduling cells is used to determine a cell group to which the target cell belongs; a first quantitative value and a second quantitative value respectively correspond to the first cell group and the second cell group. The present disclosure ensures the flexibility of control signaling under multiple TRPs.
1 . A User Equipment (UE) for wireless communications, the UE comprising:
a receiver configured to:
receive signaling that indicates a scheduled cell set, wherein the scheduled cell set is divided into a first cell group and a second cell group, wherein the first cell group includes one or more serving cells, wherein a corresponding scheduling cell for each of the one or more serving cells in the first cell group has one or no Control Resource Set (CORESET) pool, and the second cell group includes one or more serving cells, wherein a corresponding scheduling cell for each of the one or more serving cells in the second cell group has at least two CORESET pools; and
monitor a first plurality of control channel candidates in a time window, wherein: the first plurality of control channel candidates occupy a second plurality control channel elements, the first plurality is less than or equal to a first threshold, the second plurality is less than or equal to a second threshold, the first threshold and the second threshold are determined based on a number the one or more serving cells in the first cell group, a number of the one or more serving cells in the second cell group, and a target factor, wherein the target factor is a number.
2 . The UE of claim 1 , wherein:
a scheduling cell for a target cell corresponds to a smallest identity of a plurality of identities corresponding to a respective plurality of scheduling cells; and
the target cell belongs to either the first cell group or the second cell group based on a number of CORESET pools of the scheduling cell for the target cell.
3 . The UE of claim 1 , wherein:
K1 scheduling cells for a target cell correspond to respective K1 coefficients, wherein K1 is an integer;
on a condition that a quotient of a sum of the K1 coefficients and K1 is less than a target threshold, the target cell belongs to the first cell group; and
on a condition that the quotient of the sum of the K1 coefficients and K1 is greater than or equal to the target threshold, the target cell belongs to the second cell group.
4 . The UE of claim 1 , further comprising a transmitter, wherein:
the transmitter is configured to transmit an indication of a candidate factor from a candidate factor set; and
the receiver is further configured to receive information that is used to determine whether the target factor is equal to the candidate factor.
5 . The UE of claim 4 , wherein:
the transmitter is further configured to transmit an indication of the candidate factor set.
6 . The UE of claim 1 , wherein:
a first parameter is determined based on the number of the one or more serving cells in the first cell group, the number of the one or more serving cells in the second cell group, and the target factor; and
the first threshold and the second threshold are determined based on the first parameter and a second parameter.
7 . The UE of claim 6 , wherein the first parameter is a ratio of a target sum value to a characteristic sum value, the target sum value being no greater than the characteristic sum value; the characteristic sum value is linear with the number of the one or more serving cells in the first cell group, and the characteristic sum value is linear with a product of the number of the one or more serving cells in the second cell group and the target factor; the target sum value is linear with the number of the one or more serving cells in the first cell group, and the target sum value is linear with a product of the number of the one or more serving cells in the second cell group and the target factor.
8 . The UE of claim 6 , further comprising a transmitter configured to transmit the second parameter.
9 . The UE of claim 1 , wherein:
a control candidate of the first plurality of control channel candidates employs a subcarrier spacing (SCS), the SCS is used to determine a length of the time window, and the first threshold and the second threshold are based on the SCS.
10 . The UE of claim 1 , wherein:
a first control channel candidate is one of the first plurality of control channel candidates, and a second control channel candidate is one of the first plurality of control channel candidates other than the first control channel candidate; and
a control channel element occupied by the first control channel candidate is different from that occupied by the second control channel candidate, or scrambling employed by the first control channel candidate is different from that employed by the second control channel candidate, or a payload size of a downlink control information (DCI) format corresponding to the first control channel candidate is different from that of a DCI format corresponding to the second control channel candidate.
11 . A method performed by a User Equipment (UE), the method comprising:
receiving signaling that indicates a scheduled cell set, wherein the scheduled cell set is divided into a first cell group and a second cell group, wherein the first cell group includes one or more serving cells, wherein corresponding a scheduling cell for each of the one or more serving cells in the first cell group has one or no Control Resource Set (CORESET) pool, and the second cell group includes one or more serving cells, whererin a corresponding scheduling cell for each of the one or more serving cells in the second cell group has at least two CORESET pools; and
monitoring a first plurality of control channel candidates in a time window, wherein: the first plurality of control channel candidates occupy a second plurality of control channel elements, the first plurality is less than or equal to a first threshold, the second plurality is less than or equal to a second threshold, the first threshold and the second threshold are determined based on a number of the one or more serving cells in the first cell group, a number of the one or more serving cells in the second cell groups, and a target factor, wherein the target factor is a number.
12 . The method of claim 11 , wherein:
a scheduling cell for a target cell corresponds to a smallest identity of a plurality of identities corresponding to a respective plurality of scheduling cells; and
the target cell belongs to either the first cell group or the second cell group based on a number of CORESET pools of the scheduling cell for the target cell.
13 . The method of claim 11 , wherein:
K1 scheduling cells for a target cell correspond to respective K1 coefficients, wherein K1 is an integer;
on a condition that a quotient of a sum of the K1 coefficients and K1 is less than a target threshold, the target cell belongs to the first cell group; and
on a condition that the quotient of the sum of the K1 coefficients and K1 is greater than or equal to the target threshold, the target cell belongs to the second cell group.
14 . The method of claim 11 , further comprising:
transmitting an indication of a candidate factor from a candidate factor set; and
receiving information that is used to determine whether the target factor is equal to the candidate factor.
15 . The method of claim 14 , further comprising:
transmitting an indication of the candidate factor set.
16 . The method of claim 11 , wherein:
a first parameter is determined based on the number of the one or more serving cells in the first cell group, the number of the one or more serving cells in the second cell group, and the target factor; and
the first threshold and the second threshold are determined based on the first parameter and a second parameter.
17 . The method of claim 16 , wherein the first parameter is a ratio of a target sum value to a characteristic sum value, the target sum value being no greater than the characteristic sum value; the characteristic sum value is linear with the number of the one or more serving cells in the first cell group being, and the characteristic sum value is linear with a product of the number of the one or more serving cells in the second cell group and the target factor; the target sum value is linear with the number of the one or more serving cells in the first cell group, and the target sum value is linear with a product of the number of the one or more serving cells in the second cell group and the target factor.
18 . The method of claim 16 , further comprising:
transmitting the second parameter.
19 . The method of claim 11 , wherein:
a control candidate of the first plurality of control channel candidates employs a subcarrier spacing (SCS), the SCS is used to determine a length of the time window, and the first threshold and the second threshold are based on the SCS.
20 . The method of claim 11 , wherein:
a first control channel candidate is one of the first plurality of control channel candidates, and a second control channel candidate is one of the first plurality of control channel candidates other than the first control channel candidate; and
a control channel element occupied by the first control channel candidate is different from that occupied by the second control channel candidate, or scrambling employed by the first control channel candidate is different from that employed by the second control channel candidate, or a payload size of a downlink control information (DCI) format corresponding to the first control channel candidate is different from that of a DCI format corresponding to the second control channel candidate.