Enhanced connected mode DRX procedures for NR
Embodiments described herein include DRX operations that address impacts of beamforming to current DRX operations. It is recognized herein that the new NR-PDCCH may affect the downlink control channel monitoring in DRX operations. DRX embodiments described herein also address the impact of new NR-PDCCH to DRX operations. It is further recognized herein that, in NR, multiple DRX configurations may be supported, and L1/2 signaling (such as MAC CE based) can be used for dynamic DRX configuration switching. Embodiments described herein include signaling and other mechanisms that support multiple DRX configurations, and switching between multiple configurations. Embodiments described herein also include DRX operations that address the impact of HARQ design in NR to DRX operations. Embodiments described herein further include DRX operations that address the impact of multiple SR configurations in NR to DRX operation.
1. An apparatus comprising a processor, a memory, and communication circuitry, the apparatus being connected to a network via its communication circuitry, the apparatus further comprising computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform operations comprising:
receiving a configuration signal; and
based on the configuration signal, determining a processor interrupt time unit to be used for timing of a medium access control (MAC) procedure, wherein the MAC procedure is a discontinuous reception (DRX) procedure, and further comprising terminating an active time of the DRX procedure when a physical downlink control channel (PDCCH) occasion ends,
wherein the processor interrupt time unit is based on at least one of: a capability of the apparatus, a minimum slot duration associated with the apparatus, or a minimum slot duration associated with a numerology.
2. The apparatus as recited in claim 1 , wherein the capability of the apparatus comprises a battery level associated with the apparatus, a category of the apparatus, or a power setting associated with the apparatus.
3. The apparatus as recited in claim 1 , wherein the numerology is an active uplink numerology, an active downlink numerology, a reference numerology, or a default numerology.
4. The apparatus as recited in claim 1 , wherein the apparatus further comprises computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform further operations comprising:
monitoring physical downlink control channel (PDCCH) occasions having respective start times, the start times separated from each other in time by a time interval consisting of one or a multiple of the processor interrupt time unit.
5. The apparatus as recited in claim 1 , wherein the apparatus further comprises computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform further operations comprising:
receiving data during time periods having respective start times separated from each other by a time interval consisting of one or a multiple of the processor interrupt time unit.
6. The apparatus as recited in claim 1 , wherein the apparatus further comprises computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform further operations comprising:
transmitting data during time periods having respective start times separated from each other by a time interval consisting of one or a multiple of the processor interrupt time unit.
7. The apparatus as recited in claim 1 , wherein the apparatus further comprises computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform further operations comprising:
initiating an active time when a physical downlink control channel (PDCCH) occasion begins.
8. The apparatus as recited in claim 1 , wherein the apparatus further comprises computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform further operations comprising:
during an active time of the apparatus, transmitting a beam failure recovery request; and
during the active time, waiting for a response to the beam failure recovery request.
9. The apparatus as recited in claim 8 , wherein the apparatus further comprises computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform further operations comprising:
during a beam failure recovery, suspending one or more discontinuous reception timers; and
resuming the one or more discontinuous reception timers when the beam failure recovery is complete.
10. The apparatus as recited in claim 1 , wherein the apparatus further comprises computer-executable instructions stored in the memory of the apparatus which, when executed by the processor of the apparatus, cause the apparatus to perform further operations comprising:
detecting a change in at least one of a physical downlink control channel (PDCCH) core resource set (CORESET), an active component carrier (CC), an active bandwidth part (BWP), an active discontinuous reception (DRX) configuration parameter set, or a battery level of the apparatus, or a power saving mode of the apparatus; and
in response detecting the change, modifying the processor interrupt time unit.
11. A wireless transmit/receive unit (WTRU) configured to perform operations comprising:
receiving a configuration message that causes configuration of an active time associated with a discontinuous reception (DRX) procedure, wherein the DRX procedure comprises monitoring a physical downlink control channel (PDCCH), and wherein the active time comprises a start time and a duration;
determining that the active time of the DRX procedure partially overlaps with a PDCCH occasion; and
based on the determining the active time of the DRX procedure partially overlaps with the PDCCH occasion, disregarding the entirety of the PDCCH occasion.
12. The WTRU of claim 11 , wherein disregarding the PDCCH occasion comprises altering the active time of the DRX procedure to cause the PDCCH occasion not to be monitored.
13. The WTRU of claim 12 , wherein altering the active time of the DRX procedure comprises adjusting a start time of the active time of the DRX procedure such that the active time of the DRX procedure ends when the PDCCH occasion begins.
14. The WTRU of claim 11 , wherein the configuration message comprises an RRC message.
15. The WTRU of claim 11 , wherein monitoring the PDCCH comprises initiating an active time when the PDCCH occasion begins.
16. A method comprising:
receiving a configuration message that causes configuration of an active time associated with a discontinuous reception (DRX) procedure, wherein the DRX procedure comprises monitoring a physical downlink control channel (PDCCH), and wherein the active time comprises a start time and a duration;
determining that the active time of the DRX procedure partially overlaps with a PDCCH occasion; and
based on the determining the active time of the DRX procedure partially overlaps with the PDCCH occasion, disregarding the entirety of the PDCCH occasion.
17. The method of claim 16 , wherein disregarding the PDCCH occasion comprises altering the active time of the DRX procedure to cause the PDCCH occasion not to be monitored.
18. The method of claim 17 , wherein altering the active time of the DRX procedure comprises adjusting a start time of the active time of the DRX procedure such that the active time of the DRX procedure ends when the PDCCH occasion begins.
19. The method of claim 16 , wherein the configuration message comprises an RRC message.
20. The method of claim 16 , wherein monitoring the PDCCH comprises initiating an active time when the PDCCH occasion begins.