Discontinuous reception inactivity timer for PDCCH repetition
A configuration to allow a UE to determine if a detected PDCCH corresponds to a linked PDCCH candidate with repetition. The apparatus monitors for a PDCCH based on a DRX configuration, the DRX configuration having an inactivity timer. The apparatus determines whether the PDCCH corresponds to a linked PDCCH candidate and a new transmission is scheduled, wherein the linked PDCCH candidate is comprised of two or more PDCCH repetitions. The apparatus starts the inactivity timer in a first symbol after an end of at least one of the two or more PDCCH repetitions.
1. An apparatus for wireless communication at a user equipment (UE), comprising:
memory; and
at least one processor coupled to the memory, the at least one processor configured to cause the UE to:
monitor for a physical downlink control channel (PDCCH) transmission that includes PDCCH repetitions in two or more PDCCH candidates based on a discontinuous reception (DRX) configuration, the DRX configuration having an inactivity timer; and
in response to the PDCCH repetitions corresponding to the two or more PDCCH candidates and a new transmission being scheduled by the PDCCH repetitions, start the inactivity timer in a first symbol after an end of a last PDCCH candidate of the two or more PDCCH candidates, wherein at least a first PDCCH candidate of the two or more PDCCH candidates is within an active time based on the DRX configuration and at least a second PDCCH candidate of the two or more PDCCH candidates is outside of the active time.
2. The apparatus of claim 1 , further comprising a transceiver coupled to the at least one processor, wherein the at least one processor is configured to monitor for the PDCCH transmission via the transceiver.
3. The apparatus of claim 1 , wherein all candidates of the two or more PDCCH candidates are monitored.
4. The apparatus of claim 1 , wherein all candidates of the two or more PDCCH candidates within the active time are monitored.
5. The apparatus of claim 1 , wherein the at least one processor is further configured to:
receive, from a base station, the DRX configuration via radio resource control (RRC) signaling.
6. The apparatus of claim 1 , wherein the PDCCH repetitions correspond to the two or more PDCCH candidates based on at least one of:
two or more linked PDCCH candidates are always received together,
a bit in downlink control information (DCI) indicating that the DCI corresponds to the two or more PDCCH candidates,
a different radio network temporary identifier (RNTI) is used for scrambling of the DCI when the DCI corresponds to the two or more PDCCH candidates, or
a different scrambling identifier is used for PDCCH scrambling or for demodulated reference signal (DMRS) scrambling.
7. An apparatus for wireless communication at a user equipment (UE), comprising:
memory; and
at least one processor coupled to the memory, the at least one processor configured to cause the UE to:
receive a discontinuous reception (DRX) configuration; and
skip monitoring for two or more PDCCH candidates that have at least one PDCCH candidate within an active time and at least a second PDCCH candidate of the two or more PDCCH candidates outside of the active time, wherein the two or more PDCCH candidates are not monitored based on the second PDCCH candidate of the two or more PDCCH candidates that is outside of the active time.
8. The apparatus of claim 7 , wherein the two or more PDCCH candidates are linked.
9. The apparatus of claim 7 , wherein the two or more PDCCH candidates are for PDCCH repetitions.
10. A method of wireless communication at a user equipment (UE), comprising:
monitoring for a physical downlink control channel (PDCCH) transmission that includes PDCCH repetitions in two or more PDCCH candidates based on a discontinuous reception (DRX) configuration, the DRX configuration having an inactivity timer; and
in response to the PDCCH repetitions corresponding to the two or more PDCCH candidates and a new transmission being scheduled by the PDCCH repetitions, starting the inactivity timer in a first symbol after an end of a last PDCCH candidate of the two or more PDCCH candidates, wherein at least a first PDCCH candidate of the two or more PDCCH candidates is within an active time based on the DRX configuration and at least a second PDCCH candidate of the two or more PDCCH candidates is outside of the active time.
11. The method of claim 10 , wherein all candidates of the two or more PDCCH candidates are monitored.
12. The method of claim 10 , wherein all candidates of the two or more PDCCH candidates within the active time are monitored.
13. The method of claim 10 , further comprising:
receiving, from a base station, the DRX configuration via radio resource control (RRC) signaling.
14. The method of claim 10 , wherein the PDCCH repetitions correspond to the two or more PDCCH candidates based on at least one of:
two or more linked PDCCH candidates are always received together,
a bit in downlink control information (DCI) indicating that the DCI corresponds to the two or more PDCCH candidates,
a different radio network temporary identifier (RNTI) is used for scrambling of the DCI when the DCI corresponds to the two or more PDCCH candidates, or
a different scrambling identifier is used for PDCCH scrambling or for demodulated reference signal (DMRS) scrambling.
15. A method of wireless communication at a user equipment (UE), comprising:
receiving a discontinuous reception (DRX) configuration; and
skipping monitoring for two or more PDCCH candidates that have at least one PDCCH candidate within an active time and at least a second PDCCH candidate of the two or more PDCCH candidates outside of the active time, wherein the two or more PDCCH candidates are not monitored based on the second PDCCH candidate of the two or more PDCCH candidates that is outside of the active time.
16. The method of claim 15 , wherein the two or more PDCCH candidates are linked.
17. The method of claim 15 , wherein the two or more PDCCH candidates are for PDCCH repetitions.
18. An apparatus for wireless communication at a base station, comprising:
memory; and
at least one processor coupled to the memory and configured to:
configure a discontinuous reception (DRX) configuration having an inactivity timer; and
provide, to a user equipment (UE), at least one repetition of a physical downlink control channel (PDCCH) transmission based on the DRX configuration, wherein in response to the at least one repetition of the PDCCH transmission corresponding to two or more PDCCH candidates and a new transmission being scheduled, the inactivity timer is started in a first symbol after an end of a last PDCCH candidate of the two or more PDCCH candidates, wherein:
at least a first PDCCH candidate of the two or more PDCCH candidates is within an active time based on the DRX configuration and at least a second PDCCH candidate of the two or more PDCCH candidates is outside of the active time, or
wherein all candidates of the two or more PDCCH candidates are within the active time to provide the at least one repetition in monitored candidates.
19. The apparatus of claim 18 , further comprising a transceiver coupled to the at least one processor, the at least one processor being configured to:
provide, to the UE, the PDCCH transmission via the transceiver based on the DRX configuration.
20. The apparatus of claim 18 , wherein the at least the first PDCCH candidate of the two or more PDCCH candidates is within the active time and the at least the second PDCCH candidate of the two or more PDCCH candidates is outside of the active time.
21. The apparatus of claim 19 , wherein all candidates of the two or more PDCCH candidates are within the active time to provide the at least one repetition in the monitored candidates.
22. The apparatus of claim 18 , wherein the DRX configuration is provided via radio resource control (RRC) signaling.
23. The apparatus of claim 18 , wherein the PDCCH transmission is associated with the two or more PDCCH candidates based on at least one of:
two or more linked PDCCH candidates are always received together,
a bit in downlink control information (DCI) indicating that the DCI corresponds to the two or more PDCCH candidates,
a different radio network temporary identifier (RNTI) is used for scrambling of the DCI when the DCI corresponds to the two or more PDCCH candidates, or
a different scrambling identifier is used for PDCCH scrambling or for demodulated reference signal (DMRS) scrambling.
24. A method for wireless communication at a base station, comprising:
configuring a discontinuous reception (DRX) configuration having an inactivity timer; and
providing, to a user equipment (UE), at least one repetition of a physical downlink control channel (PDCCH) transmission based on the DRX configuration, wherein in response to the at least one repetition of the PDCCH transmission corresponding to two or more PDCCH candidates and a new transmission being scheduled, the inactivity timer is started in a first symbol after an end of a last PDCCH candidate of the two or more PDCCH candidates, wherein:
at least a first PDCCH candidate of the two or more PDCCH candidates is within an active time based on the DRX configuration and at least a second PDCCH candidate of the two or more PDCCH candidates is outside of the active time, or
wherein all candidates of the two or more PDCCH candidates are within the active time to provide the at least one repetition in monitored candidates.
25. The method of claim 24 , wherein the at least the first PDCCH candidate of the two or more PDCCH candidates is within the active time and the at least the second PDCCH candidate of the two or more PDCCH candidates is outside of the active time.
26. The method of claim 24 , wherein all candidates of the two or more PDCCH candidates are within the active time to provide the at least one repetition in the monitored candidates.
27. The method of claim 24 , wherein the DRX configuration is provided via radio resource control (RRC) signaling.
28. The method of claim 24 , wherein the PDCCH transmission is associated with corresponds to the two or more PDCCH candidates based on at least one of:
two or more linked PDCCH candidates are always received together,
a bit in downlink control information (DCI) indicating that the DCI corresponds to the two or more PDCCH candidates,
a different radio network temporary identifier (RNTI) is used for scrambling of the DCI when the DCI corresponds to the two or more PDCCH candidates, or
a different scrambling identifier is used for PDCCH scrambling or for demodulated reference signal (DMRS) scrambling.