DYNAMIC POWER MANAGEMENT OF CONTEXT AWARE SERVICES

• US 20140245033A1
• Filed: 02/28/2013
• Published: 08/28/2014
• Est. Priority Date: 02/28/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Grokop, Leonard Henry, Sadavisam, Shankar
• Granted Patent: US 9,594,411 B2
• Time in Patent Office: Days
• US Class Current: 713/300
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: G06F 1/3206 Monitoring of events, devices or parameters that trigger a change in power modality
• CPC Class Codes: G06F 1/3234 Power saving characterised by the action undertaken
• CPC Class Codes: H04M 1/72454 according to context-related or environment-related conditions
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The disclosure is directed to modifying the operation of one or more hardware subsystems when a new context awareness service begins. An aspect determines a power budget for a plurality of operating context awareness services including the new context awareness service, wherein the power budget is based on a power requirement for each of the plurality of context awareness services, and wherein the power requirement for each of the plurality of context awareness services is based on power utilizations of the one or more hardware subsystems corresponding to the plurality of context awareness services, and allocates power resources to the one or more hardware subsystems based on importances of the plurality of context awareness services and/or the one or more hardware subsystems, wherein the allocation of the power resources is performed within the power budget.

Claims

1. A method for modifying the operation of one or more hardware subsystems when a new context awareness service begins, comprising:

determining a power budget for a plurality of operating context awareness services including the new context awareness service, wherein the power budget is based on a power requirement for each of the plurality of context awareness services, and wherein the power requirement for each of the plurality of context awareness services is based on power utilizations of the one or more hardware subsystems corresponding to the plurality of context awareness services; and

allocating power resources to the one or more hardware subsystems based on importances of the plurality of context awareness services and/or the one or more hardware subsystems, wherein the allocation of the power resources is performed within the power budget.

2. The method of claim 1, wherein the allocating the power resources to the one or more hardware subsystems is based on an accuracy required for each of the plurality of context awareness services.

3. The method of claim 2, wherein the accuracy of a context awareness service depends on the power utilization of the hardware subsystem.

4. The method of claim 1, wherein at least one of the one or more hardware subsystems comprises a plurality of sensors.

5. The method of claim 1, wherein at least one of the one or more hardware subsystems comprises a single sensor.

6. The method of claim 1, wherein a context awareness service is associated with a plurality of hardware subsystems.

7. The method of claim 1, wherein the plurality of context awareness services are one or more of a geo-fencing service, a motion classification service, a speech detection service, an in-meeting detection service, a location clustering service, or an audio clustering service.

8. The method of claim 1, wherein the one or more hardware subsystems are one or more of a motion sensor subsystem, a wireless network access subsystem, a GPS subsystem, an audio subsystem, a short-range wireless communication subsystem, or a camera subsystem.

9. The method of claim 1, wherein the determining the power budget is based on user selection of a power management profile.

10. The method of claim 1, wherein the determining the power budget is based on a battery level of a device comprising the one or more hardware subsystems.

11. The method of claim 1, further comprising:

determining cumulative performance metrics of the plurality of context awareness services.

12. The method of claim 11, wherein at least one of the cumulative performance metrics is an accuracy of a classifier or a detector service.

13. The method of claim 11, further comprising:

if the cumulative performance metrics fall below a threshold, increasing the allocation of the power resources within the power budget.

14. The method of claim 11, wherein the cumulative performance metrics are a function of a performance/power trade-off of each context awareness service.

15. The method of claim 1, wherein a lookup table is used in modifying operation of the plurality of context awareness services.

16. The method of claim 1, wherein a plurality of applications utilize one or more of the plurality of context awareness services.

17. The method of claim 16, further comprising:

allocating additional power resources to a shared one of the plurality of services within the power budget.

18. The method of claim 1, wherein at least one of the plurality of context awareness services share one or more hardware subsystems.

19. The method of claim 18, further comprising:

allocating additional power resources to a shared one of the one or more hardware subsystems within the power budget.

20. The method of claim 1, wherein the determining the importance comprises:

determining a number of the plurality of context awareness services using a hardware subsystem; and

assigning a higher importance to a hardware subsystem being used by a higher number of the plurality of context awareness services.

21. An apparatus for modifying the operation of one or more hardware subsystems when a new context awareness service begins, comprising:

logic configured to determine a power budget for a plurality of operating context awareness services including the new context awareness service, wherein the power budget is based on a power requirement for each of the plurality of context awareness services, and wherein the power requirement for each of the plurality of context awareness services is based on power utilizations of the one or more hardware subsystems corresponding to the plurality of context awareness services; and

logic configured to allocate power resources to the one or more hardware subsystems based on importances of the plurality of context awareness services and/or the one or more hardware subsystems, wherein the allocation of the power resources is performed within the power budget.

22. The apparatus of claim 21, wherein allocating the power resources to the one or more hardware subsystems is based on an accuracy required for each of the plurality of context awareness services.

23. The apparatus of claim 22, wherein the accuracy of a context awareness service depends on the power utilization of the hardware subsystem.

24. The apparatus of claim 21, wherein at least one of the one or more hardware subsystems comprises a plurality of sensors.

25. The apparatus of claim 21, wherein at least one of the one or more hardware subsystems comprises a single sensor.

26. The apparatus of claim 21, wherein a context awareness service is associated with a plurality of hardware subsystems.

27. The apparatus of claim 21, wherein the plurality of context awareness services are one or more of a geo-fencing service, a motion classification service, a speech detection service, an in-meeting detection service, a location clustering service, or an audio clustering service.

28. The apparatus of claim 21, wherein the one or more hardware subsystems are one or more of a motion sensor subsystem, a wireless network access subsystem, a GPS subsystem, an audio subsystem, a short-range wireless communication subsystem, or a camera subsystem.

29. The apparatus of claim 21, wherein determining the power budget is based on user selection of a power management profile.

30. The apparatus of claim 21, wherein determining the power budget is based on a battery level of a device comprising the one or more hardware subsystems.

31. The method of claim 21, further comprising:

logic configured to determine cumulative performance metrics of the plurality of context awareness services.

32. The apparatus of claim 31, wherein at least one of the cumulative performance metrics is an accuracy of a classifier or a detector service.

33. The apparatus of claim 31, further comprising:

logic configured to increase the allocation of the power resources within the power budget if the cumulative performance metrics fall below a threshold.

34. The apparatus of claim 31, wherein the cumulative performance metrics are a function of a performance/power trade-off of each context awareness service.

35. The apparatus of claim 21, wherein a lookup table is used in modifying operation of the plurality of context awareness services.

36. The apparatus of claim 21, wherein a plurality of applications utilize one or more of the plurality of context awareness services.

37. The apparatus of claim 36, further comprising:

logic configured to allocate additional power resources to a shared one of the plurality of services within the power budget.

38. The apparatus of claim 21, wherein at least one of the plurality of context awareness services share one or more hardware subsystems.

39. The apparatus of claim 38, further comprising:

logic configured to allocate additional power resources to a shared one of the one or more hardware subsystems within the power budget.

40. The apparatus of claim 21, wherein the logic configured to determine the importance comprises:

logic configured to determine a number of the plurality of context awareness services using a hardware subsystem; and

logic configured to assign a higher importance to a hardware subsystem being used by a higher number of the plurality of context awareness services.

41. An apparatus for modifying the operation of one or more hardware subsystems when a new context awareness service begins, comprising:

means for determining a power budget for a plurality of operating context awareness services including the new context awareness service, wherein the power budget is based on a power requirement for each of the plurality of context awareness services, and wherein the power requirement for each of the plurality of context awareness services is based on power utilizations of the one or more hardware subsystems corresponding to the plurality of context awareness services; and

means for allocating power resources to the one or more hardware subsystems based on importances of the plurality of context awareness services and/or the one or more hardware subsystems, wherein the allocation of the power resources is performed within the power budget.

42. A non-transitory computer-readable medium comprising program code for modifying the operation of one or more hardware subsystems when a new context awareness service begins, the program code comprising:

at least one instruction to determine a power budget for a plurality of operating context awareness services including the new context awareness service, wherein the power budget is based on a power requirement for each of the plurality of context awareness services, and wherein the power requirement for each of the plurality of context awareness services is based on power utilizations of the one or more hardware subsystems corresponding to the plurality of context awareness services; and

at least one instruction to allocate power resources to the one or more hardware subsystems based on importances of the plurality of context awareness services and/or the one or more hardware subsystems, wherein the allocation of the power resources is performed within the power budget.