Channel state information reference signal triggering when secondary cell dormancy is configured

1 . A method for wireless communication at a user equipment (UE), comprising:

identifying a cell measurement supported by the UE, the cell measurement associated with the UE supporting channel state information measurements of a dormant secondary cell in a cell group;

receiving a downlink control information triggering channel state information reference signal measurements for a set of cells in the cell group, the set of cells comprising the dormant secondary cell;

performing, based at least in part on the downlink control information, the channel state information reference signal measurements for active cells in the set of cells according to the cell measurement supported by the UE to identify channel state information for each of the active cells; and

transmitting a channel state information report that indicates the channel state information for the active cells in the set of cells, wherein channel state information for the dormant secondary cell is omitted from the channel state information report based at least in part on a number of cells in the cell group satisfying a threshold.

2 . The method of claim 1 , wherein the performing according to the cell measurement supported by the UE comprises:

determining that at least one channel state information report configuration identified in the downlink control information is associated with the dormant secondary cell;

refraining from performing the channel state information reference signal measurements for cells in the set of cells identified in the at least one channel state information report configuration associated with dormant cells based at least in part on the downlink control information triggering channel state information measurements for the dormant secondary cell; and

performing the channel state information reference signal measurements for the active cells in the set of cells identified in one or more other channel state information report configurations associated with the active cells based at least in part on the downlink control information triggering channel state information reference signal measurements for the dormant secondary cell.

3 . The method of claim 2 , wherein the performing according to the cell measurement supported by the UE comprises:

determining that a number of active cells in the cell group satisfies the threshold; and

performing the channel state information reference signal measurements for the active cells in the set of cells identified in the one or more other channel state information report configurations associated with the active cells based at least in part on the number of active cells satisfying the threshold and the downlink control information triggering channel state information reference signal measurements for the dormant secondary cell.

4 . The method of claim 2 , wherein the performing according to the cell measurement supported by the UE comprises:

determining that the number of cells in the cell group satisfies the threshold; and

performing the channel state information reference signal measurements for the active cells in the set of cells identified in the one or more other channel state information report configurations associated with the active cells based at least in part on the number of cells satisfying the threshold and the downlink control information triggering channel state information reference signal measurements for the dormant secondary cell.

5 . The method of claim 1 , wherein the performing according to the cell measurement supported by the UE comprises:

identifying at least one channel state information report configuration identified in the downlink control information that is associated with active secondary cells in the cell group; and

performing the channel state information reference signal measurements for the active cells associated with at least one channel state information report configuration associated with active cells based at least in part on the at least one channel state information report configuration being associated with the active secondary cells and the downlink control information triggering channel state information reference signal measurements for the dormant secondary cell.

6 . The method of claim 1 , wherein the downlink control information comprises a downlink grant triggering the channel state information reference signal measurements or an uplink grant triggering the channel state information reference signal measurements.

7 . A method for wireless communication at a primary cell, comprising:

identifying a cell group configured for a user equipment (UE);

transmitting a downlink control information to the UE triggering channel state information reference signal measurements for a set of cells in the cell group, the set of cells comprising a dormant secondary cell; and

receiving a channel state information report from the UE that indicates channel state information for active cells in the set of, wherein channel state information for the dormant secondary cell is omitted from the channel state information report based at least in part on a number of cells in the cell group satisfying a threshold.

8 . The method of claim 7 , wherein receiving the channel state information report comprises:

receiving the channel state information report that indicates the channel state information for the active cells in the set of cells that are associated with a channel state information report configuration.

9 . An apparatus for wireless communication at a user equipment (UE), comprising:

at least one processor, and

memory coupled with the at least one processor,

the memory storing instructions for the at least one processor to cause the UE to:

identify a cell measurement supported by the UE, the cell measurement associated with the UE supporting channel state information measurements of a dormant secondary cell in a cell group;

receive a downlink control information triggering channel state information reference signal measurements for a set of cells in the cell group, the set of cells comprising the dormant secondary cell;

perform, based at least in part on the downlink control information, the channel state information reference signal measurements for active cells in the set of cells according to the cell measurement supported by the UE to identify channel state information for each of the active cells; and

transmit a channel state information report that indicates the channel state information for the active cells in the set of cells, wherein channel state information for the dormant secondary cell is omitted from the channel state information report based at least in part on a number of cells in the cell group satisfying a threshold.

10 . The apparatus of claim 9 , wherein the instructions for the at least one processor to cause the UE to perform the channel state information reference signal measurements according to the cell measurement supported by the UE comprise instructions for the at least one processor to cause the UE to:

determine that at least one channel state information report configuration identified in the downlink control information is associated with the dormant secondary cell;

refrain from performing the channel state information reference signal measurements for cells in the set of cells identified in the at least one channel state information report configuration associated with dormant cells based at least in part on the downlink control information triggering channel state information measurements on the dormant secondary cell; and

perform the channel state information reference signal measurements for the active cells in the set of cells identified in one or more other channel state information report configurations associated with the active cells based at least in part on the downlink control information triggering channel state information reference signal measurements for the dormant secondary cell.

11 . The apparatus of claim 10 , wherein the instructions for the at least one processor to cause the UE to perform the channel state information reference signal measurements according to the cell measurement supported by the UE comprise instructions for the at least one processor to cause the UE to:

determine that a number of active cells in the cell group satisfies the threshold; and

perform the channel state information reference signal measurements for the active cells in the set of cells identified in the one or more other channel state information report configurations associated with the active cells based at least in part on the number of active cells satisfying the threshold and the downlink control information triggering channel state information reference signal measurements for the dormant secondary cell.

12 . The apparatus of claim 10 , wherein instructions for the at least one processor to cause the UE to perform the channel state information reference signal measurements according to the cell measurement supported by the UE comprise instructions for the at least one processor to cause the UE to:

determine that the number of cells in the cell group satisfies the threshold; and

perform the channel state information reference signal measurements for the active cells in the set of cells identified in the one or more other channel state information report configurations associated with the active cells based at least in part on the number of cells satisfying the threshold and the downlink control information triggering channel state information reference signal measurements for the dormant secondary cell.

13 . The apparatus of claim 9 , wherein instructions for the at least one processor to cause the UE to perform the channel state information reference signal measurements according to the cell measurement supported by the UE comprise instructions for the at least one processor to cause the UE to:

identify at least one channel state information report configuration identified in the downlink control information that is associated with active secondary cells in the cell group; and

perform the channel state information reference signal measurements for the active cells associated with the at least one channel state information report configuration associated with the active cells based at least in part on the at least one channel state information report configuration being associated with the active secondary cells and the downlink control information triggering channel state information measurements for the dormant secondary cell.

14 . The apparatus of claim 9 , wherein the downlink control information comprises a downlink grant triggering the channel state information reference signal measurements or an uplink grant triggering the channel state information reference signal measurements.

15 . An apparatus for wireless communication at a primary cell, comprising:

at least one processor, and

memory coupled with the at least one processor,

the memory storing instructions for the at least one processor to cause the apparatus to:

identify a cell group configured for a user equipment (UE);

transmit a downlink control information to the UE triggering channel state information reference signal measurements for a set of cells in the cell group, the set of cells comprising a dormant secondary cell; and

receive a channel state information report from the UE that indicates the channel state information for active cells in the set of cells, wherein channel state information for the dormant secondary cell is omitted from the channel state information report based at least in part on a number of cells in the cell group satisfying a threshold.

16 . The apparatus of claim 15 , wherein the instructions for the at least one processor to receive the channel state information report are further for the at least one processor to cause the apparatus to:

receive the channel state information report that indicates the channel state information for the active cells in the set of cells that are associated with a channel state information report configuration.