Systems, methods, and devices for signaling for power saving
Systems, Methods, Devices, and Apparatuses for power saving are provided. In at least one embodiment, a device may be configured for discontinuous reception (DRX) mode and further receive signaling indicating whether or not to wake and/or may receiving signaling indicating whether or not to go-to-sleep. The signaling may be implemented as group-specific signaling.
1. A processor configured to:
receive a first configuration for a connected mode discontinuous reception (C-DRX) mode and a second configuration for receiving a wake-up indication in a first downlink control information (DCI) format on a physical downlink control channel (PDCCH), wherein the first DCI format includes a plurality of UE specific fields;
monitor, based at least in part on the second configuration, for the first DCI format during an OFF/non-active state of the C-DRX mode, wherein one or more fields of the plurality of UE specific fields of the first DCI format include a 1 bit indication to indicate whether or not there is a wake up indication, wherein a first value of the 1 bit indication corresponds to a wake up signal being detected, and wherein a second value of the 1 bit indication corresponds to a wake up signal not being detected; and
wake up, based at least in part on receiving the first DCI format with the 1 bit indication of the wake up indication, at a start of a next C-DRX ON duration associated with the first configuration, for downlink signal monitoring.
2. The processor of claim 1 , wherein the first DCI format is a group-common DCI message comprising the plurality of UE specific fields.
3. The processor of claim 2 , wherein the group-common DCI message is appended with a cyclic redundancy check (CRC) scrambled by a common Radio Network Temporary Identifier (RNTI).
4. The processor of claim 3 , wherein the common RNTI is a Power saving RNTI (PSRNTI).
5. The processor of claim 1 , wherein the processor is further configured to:
operate in the C-DRX mode configured with the first configuration;
receive the first DCI format in a first bandwidth part (BWP); and
wake up, after receiving the first DCI format including the wake-up indication, in a second BWP, wherein the second BWP is different from the first BWP.
6. The processor of claim 5 , wherein the first DCI format indicates a switch to the second BWP from the first BWP.
7. The processor of claim 6 , wherein a bandwidth of the second BWP is smaller than a bandwidth of the first BWP.
8. The processor of claim 1 , wherein a first value or a second value of the 1 bit indication respectively indicates whether or not there is the wake-up indication.
9. The processor of claim 1 , wherein the processor refrains from starting a drx-onDurationTimer for the downlink signal monitoring at the start of the next C-DRX ON duration unless the wake-up indication is detected.
10. The processor of claim 9 , wherein the processor is further configured to:
receive the first DCI format, on the PDCCH in a common search space, including the 1 bit indication, wherein the 1 bit indication indicates the wake-up signal.
11. The processor of claim 1 , wherein the processor is further configured to:
receive a third configuration for a common search space for monitoring the first DCI format on the PDCCH, wherein the monitoring is performed according to the third configuration.
12. A method, comprising:
transmitting to a user equipment (UE), a first configuration for a connected mode discontinuous reception (C-DRX) mode and a second configuration for a wake-up indication to be transmitted in a first downlink control information (DCI) format on a physical downlink control channel (PDCCH), wherein the first DCI format includes a plurality of UE specific fields, wherein one or more fields of the plurality of UE specific fields of the first DCI format include a 1 bit indication to indicate whether or not there is a wake-up indication, wherein a first value of the 1 bit indication corresponds to a wake up signal being detected, and wherein a second value of the 1 bit indication corresponds to a wake up signal not being detected; and
transmitting the first DCI format to the UE on the PDCCH during a scheduled OFF/non-active state of the C-DRX mode associated with the first configuration for the UE, wherein the wake-up indication indicates for the UE to wake up at a start of a next C-DRX ON duration for downlink signal monitoring.
13. The method of claim 12 , wherein the first DCI format is a group-common DCI message comprising the plurality of UE specific fields.
14. The method of claim 12 , further comprising:
transmitting the first DCI format, on the PDCCH in a common search space, including the 1 bit indication, wherein the 1 bit indication indicates the wake-up signal.
15. The method of claim 12 , further comprising:
transmitting, to the UE, a third configuration for a common search space for monitoring the first DCI format on the PDCCH.
16. A method, comprising:
receiving a first configuration for a connected mode discontinuous reception (C-DRX) mode and a second configuration for receiving a wake-up indication in a first downlink control information (DCI) format on a physical downlink control channel (PDCCH), wherein the first DCI format includes a plurality of UE specific fields;
monitoring, based at least in part on the second configuration, for the first DCI format during an OFF/non-active state of the C-DRX mode, wherein one or more fields of the plurality of UE specific fields of the first DCI format include a 1 bit indication to indicate whether or not there is a wake up indication, wherein a first value of the 1 bit indication corresponds to a wake up signal being detected, and wherein a second value of the 1 bit indication corresponds to a wake up signal not being detected; and
waking up, based at least in part on receiving the first DCI format with the 1 bit indication of the wake up indication, at a start of a next C-DRX ON duration associated with the first configuration, for downlink signal monitoring.
17. The method of claim 16 , further comprising:
receiving a third configuration for a common search space for monitoring the first DCI format on the PDCCH, wherein the monitoring is performed according to the third configuration.
18. The method of claim 16 , wherein the first DCI format is a group-common DCI message comprising the plurality of UE specific fields.
19. The method of claim 16 , further comprising:
operating in the C-DRX mode configured with the first configuration; and
receive the first DCI format, on the PDCCH in a common search space, including the 1 bit indication, wherein the 1 bit indication indicates the wake-up signal.
20. The method of claim 16 , further comprising:
refraining from starting a drx-onDurationTimer for the downlink signal monitoring at the start of the next C-DRX ON duration unless the wake-up indication is detected.