Macro and micro discontinuous reception
Methods, systems, and devices for wireless communication are described. A wireless device may receive a downlink (DL) reception indication during an active duration of a discontinuous reception (DRX) configuration. The DL reception indication may indicate the presence of a reception opportunity following an inactivity interval, as well as the length of the inactivity interval. The wireless device may refrain from DL monitoring during the inactivity interval. In some cases, the wireless device may enter a sleep mode during the inactivity interval and wake up to receive a subsequent transmission during the reception opportunity. In some examples, the wireless device may use the inactivity interval to communicate using a different radio access technology (RAT).
1. An apparatus for wireless communications at a user equipment (UE), the apparatus comprising:
a processor; and
memory coupled to the processor, the processor and memory configured to:
monitor for physical downlink control channel (PDCCH) transmissions in accordance with periodic repetitions of monitoring durations;
receive, during a first monitoring duration of the monitoring durations and based at least in part on the monitoring, a PDCCH transmission indicating an inactivity interval; and
refrain, over the indicated inactivity interval, from the monitoring for the PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
2. The apparatus of claim 1 , wherein the processor and memory are further configured to:
resume, after the indicated inactivity interval, the monitoring for the PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
3. The apparatus of claim 1 , wherein the processor and memory are further configured to:
receive, based at least in part on receiving the PDCCH transmission indicating the inactivity interval, a second PDCCH transmission during a transmission opportunity following the indicated inactivity interval.
4. The apparatus of claim 1 , wherein the processor and memory are further configured to:
establish a communications link with a base station, wherein the establishing comprises receiving a configuration for the monitoring for PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
5. The apparatus of claim 1 , wherein the processor and memory are further configured to:
receive a radio resource control (RRC) configuration comprising a configuration for the monitoring for PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
6. The apparatus of claim 1 , wherein the PDCCH transmission comprises a scheduling message.
7. The apparatus of claim 1 , wherein:
the configuration to monitor for PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations is associated with a first radio power; and
the configuration to refrain from monitoring for the PDCCH transmissions is associated with a second radio power that is less than the first radio power.
8. An apparatus for wireless communications at a base station, the apparatus comprising:
a processor; and
memory coupled to the processor, the processor and memory configured to:
transmit, to a user equipment (UE), physical downlink control channel (PDCCH) transmissions in accordance with periodic repetitions of monitoring durations;
transmit, to the UE during a first monitoring duration of the monitoring durations, a PDCCH transmission indicating an inactivity interval; and
refrain, during the indicated inactivity interval, from transmitting PDCCH transmissions to the UE in accordance with the periodic repetitions of the monitoring durations.
9. The apparatus of claim 8 , wherein the processor and memory are further configured to:
resume, after the indicated inactivity interval, the transmitting PDCCH transmissions to the UE in accordance with the periodic repetitions of the monitoring durations.
10. The apparatus of claim 8 , wherein the processor and memory are further configured to:
transmit, based at least in part on transmitting the PDCCH transmission indicating the inactivity interval, a second PDCCH transmission to the UE during a transmission opportunity following the indicated inactivity interval.
11. The apparatus of claim 8 , wherein the processor and memory are further configured to:
establish a communications link with the UE, wherein the establishing comprises transmitting a configuration for the monitoring for PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
12. The apparatus of claim 8 , wherein the processor and memory are further configured to:
transmit a radio resource control (RRC) configuration comprising a configuration for the monitoring for PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
13. The apparatus of claim 8 , wherein the PDCCH transmission comprises a scheduling message.
14. The apparatus of claim 8 , wherein the configuration to transmit the PDCCH transmission indicating the inactivity interval is based at least in part on a network load.
15. The apparatus of claim 8 , wherein the configuration to transmit the PDCCH transmission indicating the inactivity interval is based at least in part on a scheduling delay.
16. The apparatus of claim 8 , wherein the configuration to transmit the PDCCH transmission indicating the inactivity interval is based at least in part on a service latency tolerance.
17. The apparatus of claim 8 , wherein the configuration to transmit the PDCCH transmission indicating the inactivity interval is based at least in part on a traffic profile.
18. A method for wireless communications at a user equipment (UE), the method comprising:
monitoring for physical downlink control channel (PDCCH) transmissions in accordance with periodic repetitions of monitoring durations;
receiving, during a first monitoring duration of the monitoring durations and based at least in part on the monitoring, a PDCCH transmission indicating an inactivity interval; and
refraining, over the indicated inactivity interval, from the monitoring for the PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
19. The method of claim 18 , further comprising:
resuming, after the indicated inactivity interval, the monitoring for the PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
20. The method of claim 18 , further comprising:
receiving, based at least in part on receiving the PDCCH transmission indicating the inactivity interval, a second PDCCH transmission during a transmission opportunity following the indicated inactivity interval.
21. The method of claim 18 , further comprising:
establishing a communications link with a base station, wherein the establishing comprises receiving a configuration for the monitoring for PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
22. The method of claim 18 , further comprising:
receiving a radio resource control (RRC) configuration comprising a configuration for the monitoring for PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations.
23. The method of claim 18 , wherein the PDCCH comprises a scheduling message.
24. The method of claim 18 , wherein:
monitoring for PDCCH transmissions in accordance with the periodic repetitions of the monitoring durations is associated with a first radio power; and
refraining from monitoring for the PDCCH transmissions is associated with a second radio power that is less than the first radio power.
25. An apparatus for wireless communications at a user equipment (UE), the apparatus comprising:
a processor; and
memory coupled with the processor, the processor and memory configured to:
monitor for control information in accordance with periodic repetitions of monitoring durations;
receive, during a first monitoring duration of the monitoring durations, an instance of the control information; and
refrain from monitoring for the control information based at least in part on receiving the instance of the control information.
26. The apparatus of claim 25 , wherein the processor and memory are further configured to:
resume the monitoring for control information in accordance with the periodic repetitions of monitoring durations.
27. The apparatus of claim 25 , wherein the processor and memory are further configured to:
establish a communications link with a base station, wherein the establishing comprises receiving a configuration for the monitoring for control information in accordance with the periodic repetitions of monitoring durations.
28. The apparatus of claim 25 , wherein the processor and memory are further configured to:
receive a radio resource control (RRC) configuration comprising a configuration for the monitoring for control information in accordance with the periodic repetitions of monitoring durations.
29. The apparatus of claim 25 , wherein the instance of the control information comprises a scheduling message.
30. The apparatus of claim 25 , wherein:
the configuration to monitor for control information in accordance with the periodic repetitions of monitoring durations is associated with a first radio power; and
the configuration to refrain from monitoring for the control information is associated with a second radio power that is less than the first radio power.
31. A method of wireless communication comprising:
monitoring for a physical downlink control channel (PDCCH) during a first duration of a discontinuous reception (DRX) cycle of a RRC connected mode;
receiving a downlink indication during the first duration of the DRX cycle;
identifying an inactivity interval of the DRX cycle that follows the first duration;
identifying a second duration of the DRX cycle that follows the inactivity interval; and
monitoring for a physical downlink control channel (PDCCH) during the second duration based on the downlink indication.
32. A method of wireless communication comprising:
monitoring for a physical downlink control channel (PDCCH) during a first duration of a discontinuous reception (DRX) cycle of a RRC connected mode;
determining that a downlink indication is not received during the first duration of the DRX cycle; and
not monitoring for a physical downlink control channel (PDCCH) during a remaining period of the DRX cycle based on the determination.
33. A method for wireless communications at a user equipment (UE), the method comprising:
monitoring for first downlink control information comprising physical downlink control channel (PDCCH) transmissions;
receiving, based at least in part on the monitoring, a PDCCH transmission indicating a first inactivity interval;
refraining from monitoring for the PDCCH transmissions over the indicated first inactivity interval; and
monitoring for PDCCH transmissions after the indicated first inactivity interval.
34. The method of claim 33 , wherein a configuration received from a base station indicates the first inactivity interval.
35. The method of claim 34 , wherein the configuration indicates one of: a scheduled inactivity interval, a reduced inactivity interval, a requested inactivity interval, a zero inactivity interval, and a null inactivity interval.
36. The method of claim 33 , further comprising:
monitoring for second downlink control information prior to the first downlink control information, the second downlink control information comprising a macro-discontinuous reception (M-DRX) configuration indicating a second inactivity interval prior to the first inactivity interval.
37. An apparatus for wireless communications at a user equipment (UE), the apparatus comprising:
a processor; and
memory coupled to the processor, the processor and memory configured to:
monitor for a physical downlink control channel (PDCCH) during a first duration of a discontinuous reception (DRX) cycle of a RRC connected mode;
receive a downlink indication during the first duration of the DRX cycle;
identify an inactivity interval of the DRX cycle that follows the first duration;
identify a second duration of the DRX cycle that follows the inactivity interval; and
monitor for a physical downlink control channel (PDCCH) during the second duration based on the downlink indication.
38. An apparatus for wireless communications at a user equipment (UE), the apparatus comprising:
a processor; and
memory coupled to the processor, the processor and memory configured to:
monitor for a physical downlink control channel (PDCCH) during a first duration of a discontinuous reception (DRX) cycle of a RRC connected mode;
determine that a downlink indication is not received during the first duration of the DRX cycle; and
not monitor for a physical downlink control channel (PDCCH) during a remaining period of the DRX cycle based on the determination.
39. An apparatus for wireless communications at a user equipment (UE), the apparatus comprising:
a processor; and
memory coupled to the processor, the processor and memory configured to:
monitor for first downlink control information comprising physical downlink control channel (PDCCH) transmissions;
receive, based at least in part on the monitoring, a PDCCH transmission indicating a first inactivity interval;
refrain from monitoring for the PDCCH transmissions over the indicated first inactivity interval; and
monitor for PDCCH transmissions after the indicated first inactivity interval.
40. The apparatus of claim 39 , wherein the processor and memory are configured to:
receive a configuration from a base station that indicates the first inactivity interval.
41. The apparatus of claim 40 , wherein the configuration indicates one of: a scheduled inactivity interval, a reduced inactivity interval, a requested inactivity interval, a zero inactivity interval, and a null inactivity interval.
42. The apparatus of claim 39 , wherein the processor and memory are configured to:
monitor for second downlink control information prior to the first downlink control information, the second downlink control information comprising a macro-discontinuous reception (M-DRX) configuration indicating a second inactivity interval prior to the first inactivity interval.