Techniques and apparatuses for power efficient alignment of CDRX and SC-PTM DRX schedules
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may receive a temporary mobile group identifier (TMGI) for a single cell point-to-multipoint (SC-PTM) service to which a user equipment (UE) is to be subscribed. The apparatus may configure a connected mode discontinuous reception (CDRX) schedule for the UE based at least in part on an SC-PTM discontinuous reception (DRX) schedule that corresponds to the TMGI. The apparatus may transmit the CDRX schedule to the UE.
1. A method of wireless communication, comprising:
receiving, by a base station, a temporary mobile group identifier (TMGI) for a single cell point-to-multipoint (SC-PTM) service to which a user equipment (UE) is to be subscribed;
configuring, by the base station, a connected mode discontinuous reception (CDRX) schedule for the UE based on an SC-PTM discontinuous reception (DRX) schedule that corresponds to the TMGI,
wherein at least one CDRX on duration of the CDRX schedule is configured to be time-aligned with at least one SC-PTM DRX on duration of the SC-PTM DRX schedule, and
wherein the at least one CDRX on duration is configured to occur within a threshold time period of the at least one SC-PTM DRX on duration; and
transmitting, by the base station, the CDRX schedule to the UE.
2. The method of claim 1 , wherein a CDRX cycle length of the CDRX schedule is configured to match an SC-PTM DRX cycle length of the SC-PTM DRX schedule.
3. The method of claim 1 , wherein a CDRX cycle length of the CDRX schedule is configured to be an integer multiple or an integer divisor of an SC-PTM DRX cycle length of the SC-PTM DRX schedule.
4. The method of claim 1 , wherein a CDRX offset of the CDRX schedule is configured to match an SC-PTM DRX offset of the SC-PTM DRX schedule.
5. The method of claim 1 , wherein the at least one CDRX on duration is configured to completely coincide with the at least one SC-PTM DRX on duration.
6. The method of claim 1 , wherein the at least one CDRX on duration is configured to partially coincide with the at least one SC-PTM DRX on duration.
7. The method of claim 1 , wherein the at least one CDRX on duration is configured to be contiguous with the at least one SC-PTM DRX on duration.
8. The method of claim 1 , wherein a CDRX on duration timer of the CDRX schedule is configured to match an SC-PTM DRX on duration timer of the SC-PTM DRX schedule.
9. The method of claim 1 , wherein a CDRX inactivity timer of the CDRX schedule is configured to match an SC-PTM DRX inactivity timer of the SC-PTM DRX schedule.
10. The method of claim 1 , wherein the TMGI is received in a multimedia broadcast multicast service (MBMS) interest indication (MII) message.
11. The method of claim 10 , wherein the MII message is received after an initial CDRX schedule configuration, and
wherein the CDRX schedule is reconfigured after the initial CDRX schedule configuration.
12. The method of claim 10 , wherein the MII message is received prior to an initial CDRX schedule configuration, and
wherein the CDRX schedule is configured as part of the initial CDRX schedule configuration.
13. A method of wireless communication, comprising:
transmitting, by a user equipment (UE), a temporary mobile group identifier (TMGI) for a single cell point-to-multipoint (SC-PTM) service to which the UE is to be subscribed;
receiving, by the UE, a connected mode discontinuous reception (CDRX) schedule that is configured based on an SC-PTM discontinuous reception (DRX) schedule that corresponds to the TMGI,
wherein at least one CDRX on duration of the CDRX schedule is configured to be time-aligned with at least one SC-PTM DRX on duration of the SC-PTM DRX schedule, and
wherein the at least one CDRX on duration is configured to occur within a threshold time period of the at least one SC-PTM DRX on duration; and
configuring the UE using the CDRX schedule.
14. The method of claim 13 , wherein a CDRX cycle length of the CDRX schedule is configured based on an SC-PTM DRX cycle length of the SC-PTM DRX schedule.
15. The method of claim 13 , wherein a CDRX offset of the CDRX schedule is configured based on an SC-PTM DRX offset of the SC-PTM DRX schedule.
16. A base station for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive a temporary mobile group identifier (TMGI) for a single cell point-to-multipoint (SC-PTM) service to which a user equipment (UE) is to be subscribed;
configure a connected mode discontinuous reception (CDRX) schedule for the UE based on an SC-PTM discontinuous reception (DRX) schedule that corresponds to the TMGI,
wherein at least one CDRX on duration of the CDRX schedule is configured to be time-aligned with at least one SC-PTM DRX on duration of the SC-PTM DRX schedule, and
wherein the at least one CDRX on duration is configured to occur within a threshold time period of the at least one SC-PTM DRX on duration; and
transmit the CDRX schedule to the UE.
17. The base station of claim 16 , wherein a CDRX cycle length of the CDRX schedule is configured to match an SC-PTM DRX cycle length of the SC-PTM DRX schedule.
18. The base station of claim 16 , wherein a CDRX cycle length of the CDRX schedule is configured to be an integer multiple or an integer divisor of an SC-PTM DRX cycle length of the SC-PTM DRX schedule.
19. The base station of claim 16 , wherein a CDRX offset of the CDRX schedule is configured to match an SC-PTM DRX offset of the SC-PTM DRX schedule.
20. The base station of claim 16 , wherein the at least one CDRX on duration is configured to completely coincide with the at least one SC-PTM DRX on duration.
21. The base station of claim 16 , wherein the at least one CDRX on duration is configured to partially coincide with the at least one SC-PTM DRX on duration.
22. The base station claim 16 , wherein the at least one CDRX on duration is configured to be contiguous with the at least one SC-PTM DRX on duration.
23. The base station of claim 16 , wherein the TMGI is received in a multimedia broadcast multicast service (MBMS) interest indication (MII) message.
24. A user equipment (UE) for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
transmit a temporary mobile group identifier (TMGI) for a single cell point-to-multipoint (SC-PTM) service to which the UE is to be subscribed;
receive a connected mode discontinuous reception (CDRX) schedule that is configured based on an SC-PTM discontinuous reception (DRX) schedule that corresponds to the TMGI,
wherein at least one CDRX on duration of the CDRX schedule is configured to be time-aligned with at least one SC-PTM DRX on duration of the SC-PTM DRX schedule, and
wherein the at least one CDRX on duration is configured to occur within a threshold time period of the at least one SC-PTM DRX on duration; and
configure the UE using the CDRX schedule.
25. The base station of claim 23 , wherein the MII message is received after an initial CDRX schedule configuration, and
wherein the CDRX schedule is reconfigured after the initial CDRX schedule configuration.
26. The base station of claim 23 , wherein the MII message is received prior to an initial CDRX schedule configuration, and
wherein the CDRX schedule is configured as part of the initial CDRX schedule configuration.
27. The base station of claim 16 , wherein a CDRX on duration timer of the CDRX schedule is configured to match an SC-PTM DRX on duration timer of the SC-PTM DRX schedule.
28. The base station of claim 16 , wherein a CDRX inactivity timer of the CDRX schedule is configured to match an SC-PTM DRX inactivity timer of the SC-PTM DRX schedule.
29. The UE of claim 24 , wherein a CDRX cycle length of the CDRX schedule is configured based on an SC-PTM DRX cycle length of the SC-PTM DRX schedule.
30. The UE of claim 24 , wherein a CDRX offset of the CDRX schedule is configured based on an SC-PTM DRX offset of the SC-PTM DRX schedule.