DCI FOR CELL DTX/DRX CONFIGURATION AND CELL TURN-OFF
Various aspects of the present disclosure relate to receiving, from a network entity, a cell discontinuous transmission and/or reception (DTX/DRX) configuration for a plurality of serving cells. Aspects of the present disclosure may relate to receiving a downlink control information (DCI) signal for a serving cell corresponding to at least the cell DTX/DRX configuration, wherein the DCI further comprises an indication of a cell turn-off. Aspects of the present disclosure may further relate to performing a cell search based at least in part on the cell turn-off and the cell DTX/DRX configuration.
1 . A User Equipment (UE) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive, from a network entity, a cell discontinuous transmission and/or reception (DTX/DRX) configuration for a plurality of serving cells;
receive a downlink control information (DCI) signal for a serving cell corresponding to at least the cell DTX/DRX configuration, wherein the DCI signal further comprises an indication of a cell turn-off; and
perform a cell search based at least in part on the cell turn-off and the cell DTX/DRX configuration.
2 . The UE of claim 1 , wherein the indication of the cell turn-off comprises an indication of a network energy savings (NES) conditional handover (CHO).
3 . The UE of claim 1 , wherein the cell DTX/DRX configuration comprises radio resource control (RRC) signaling, and wherein the DCI signal comprises a physical downlink control channel (PDCCH) transmission corresponding to a DCI format 2_9.
4 . The UE of claim 3 , wherein a size of the DCI format 2_9 is configured by higher-layer signaling.
5 . The UE of claim 1 , wherein the cell DTX/DRX configuration comprises a higher-layer parameter for a network energy savings (NES) specific CHO.
6 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a cell turn-off configuration for the at least one serving cell, wherein both the cell DTX/DRX configuration and the cell turn-off configuration are higher-layer configured.
7 . The UE of claim 1 , wherein the DCI signal comprises a plurality of blocks associated with the plurality of serving cells, wherein a respective block of the plurality of blocks comprises a one-bit field indicating a cell DTX/DRX operation based at least in part on a DTX/DRX type parameter being configured to cell discontinuous transmission (DTX) or cell discontinuous reception (DRX) and a cell turn-off parameter being unconfigured.
8 . The UE of claim 1 , wherein the DCI signal comprises a plurality of blocks associated with the plurality of serving cells, wherein a respective block of the plurality of blocks comprises a one-bit field indicating a cell turn-off operation based at least in part on a cell turn-off parameter being configured and a cell DTX/DRX type parameter being unconfigured.
9 . The UE of claim 1 , wherein the DCI signal comprises a plurality of blocks associated with the plurality of serving cells, wherein a respective block of the plurality of blocks comprises a two-bit field indicating a cell DTX/DRX operation based at least in part on a cell DTX/DRX type parameter being configured to cell discontinuous transmission (DTX) and discontinuous reception (DRX) and a cell turn-off parameter being unconfigured.
10 . The UE of claim 1 , wherein the DCI signal comprises a plurality of blocks associated with the plurality of serving cells, wherein a respective block of the plurality of blocks comprises a two-bit field indicating a cell turn-off operation based at least in part on a cell turn-off parameter being configured to cell discontinuous transmission (DTX) or cell discontinuous reception (DRX) and further indicating a cell turn-off operation based at least in part on a cell turn-off parameter being configured.
11 . The UE of claim 1 , wherein the DCI signal comprises a plurality of blocks associated with the plurality of serving cells, wherein a respective block of the plurality of blocks comprises a three-bit field indicating a cell DTX/DRX operation based at least in part on a cell DTX/DRX type parameter being configured to cell discontinuous transmission (DTX) and cell discontinuous reception (DRX), and further indicating a cell turn-off operation based at least in part on a cell turn-off parameter being configured.
12 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to determine an application time of the cell turn-off for the serving cell.
13 . The UE of claim 12 , wherein the at least one processor is configured to cause the UE to ignore a transmission or a reception associated with the serving cell based at least in part on the application time of the cell turn-off.
14 . The UE of claim 12 , wherein the application time of the cell turn-off is computed with reference to a reception time of the DCI signal, and wherein the application time of the cell turn-off is set by a rule or a fixed value.
15 . The UE of claim 12 , wherein the application time of the cell turn-off is configured from a set of candidate values or is indicated in the DCI signal.
16 . A processor for wireless communication, comprising:
at least one controller coupled with at least one memory and configured to cause the processor to:
receive, from a network entity, a cell discontinuous transmission and/or reception (DTX/DRX) configuration for a plurality of serving cells;
receive a downlink control information (DCI) signal for a serving cell corresponding to at least the cell DTX/DRX configuration, wherein the DCI signal further comprises an indication of a cell turn-off; and
perform a cell search based at least in part on the cell turn-off and the cell DTX/DRX configuration.
17 . A base station for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the base station to:
transmit, to at least one user equipment (UE), a cell discontinuous transmission and/or reception (DTX/DRX) configuration for a plurality of serving cells;
transmit a downlink control information (DCI) signal for a serving cell corresponding to at least the cell DTX/DRX configuration, wherein the DCI signal further comprises an indication of a cell turn-off; and
deactivate the serving cell based at least in part on the cell turn-off and the cell DTX/DRX configuration.
18 . The base station of claim 17 , wherein the indication of the cell turn-off comprises an indication of a network energy savings (NES) conditional handover (CHO), and wherein the cell DTX/DRX configuration comprises a higher-layer parameter for a NES-specific CHO.
19 . The base station of claim 17 , wherein the cell DTX/DRX configuration comprises radio resource control (RRC) signaling, wherein the DCI signal comprises a physical downlink control channel (PDCCH) transmission corresponding to a DCI format 2_9, and wherein a size of the DCI format 2_9 is configured by higher-layer signaling.
20 . A method performed by a base station, the method comprising:
transmitting, to a user equipment (UE), a cell discontinuous transmission and/or reception (DTX/DRX) configuration for a plurality of serving cells;
transmitting a downlink control information (DCI) signal for a serving cell corresponding to at least the cell DTX/DRX configuration, wherein the DCI signal further comprises an indication of a cell turn-off; and
deactivating the serving cell based at least in part on the cell turn-off and the cell DTX/DRX configuration.