Thermal power budget allocation for maximum user experience

• US 9,229,503 B2
• Filed: 11/27/2012
• Issued: 01/05/2016
• Est. Priority Date: 11/27/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Park, Hee Jun, Alton, Ronald
• Primary Examiner(s): Abbaszadeh, Jaweed A
• Assistant Examiner(s): HARRINGTON, CHERI L.
• Application Number:
  US13/686,730
• Publication Number:
  US 20140149753A1
• Time in Patent Office: 1,134 Days
• Field of Search: 713/324
• US Class Current: 1/1
• CPC Class Codes: G06F 1/206 comprising thermal management
• 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 1/324 by lowering clock frequency
• CPC Class Codes: G06F 1/325 Power saving in peripheral device
• CPC Class Codes: G06F 1/3265 Power saving in display device
• CPC Class Codes: G06F 1/3278 Power saving in modem or I/O interface
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A method, an apparatus, and a computer program product for allocating a total power budget among a plurality of components of a user device are provided. The apparatus prioritizes the plurality of components based on a user experience model (performance/power model) for each of the plurality of components. The user experience model (performance/power model) of a component includes a measure of component attribute as a function of component power consumption. The apparatus allocates portions of the total power budget among the user-device components based on priority established by the user experience model. The apparatus may further prioritize the components based on weights assigned to the components.

Claims

1. A method of allocating a total power budget among a plurality of components of a user device, said method comprising:

prioritizing the plurality of components based on a performance/power model for each of the plurality of components, wherein the performance/power model of a component of the plurality of components is defined by a plurality of measures of an attribute of the component of the plurality of components as a function of a corresponding plurality of power consumption values, and wherein the prioritizing comprises determining a rate of change for each of the plurality of components based on a difference between a current power consumption value and an increased power consumption value, and a difference between a measure of the attribute corresponding to the current power consumption value and a measure of the attribute corresponding to the increased power consumption value;

allocating portions of the total power budget among the plurality of components based on the prioritizing by allocating a first portion to a component of the plurality of components having a largest rate of change; and

repeating the prioritizing and allocating for a next portion of power.

2. The method of claim 1, wherein the prioritizing the plurality of components further comprises determining a priority for the plurality of components in order from the largest rate of change to a smallest rate of change.

3. The method of claim 1, wherein a weight is associated with the component of the plurality of components and determining the rate of change for the component of the plurality of components comprises applying the weight to the determined rate of change for the component of the plurality of components to obtain a weighted rate of change.

4. The method of claim 3, wherein the weight of the component of the plurality of components is determined by monitoring one or more of a pattern of usage of the component, frequency of usage of the component, context of usage of the component, location of usage of the component or time of usage of the component.

5. The method of claim 3, wherein the weight of the component of the plurality of components is predefined for the user device.

6. The method of claim 2, further comprising removing the component of the plurality of components from the priority if its rate of change does not satisfy a minimum threshold.

7. The method of claim 2, wherein the allocating the portions of the total power budget comprises allocating to one or more of the plurality of components, a portion of power required to turn on the component of the plurality of components, wherein such allocation occurs prior to allocating the first portion to the component having the largest rate of change.

8. The method of claim 2, wherein allocating portions of the total power budget power further comprises reducing power to the plurality of components in a reverse order that is reverse to the order of the priority.

9. The method of claim 2, further comprising determining a measure of overall device performance based on a power demand of each component of the plurality of components, a current power allocated to each component of the plurality of components and a weight of each component of the plurality of components.

10. An apparatus for allocating a total power budget among a plurality of components of a user device, said apparatus comprising:

means for prioritizing the plurality of components based on a performance/power model for each of the plurality of components, wherein the performance/power model of a component of the plurality of components is defined by a plurality of measures of attribute of the component of the plurality of components as a function of a corresponding plurality of power consumption values, and wherein the means for prioritizing is configured to determine a rate of change for each of the plurality of components based on a difference between a current power consumption value and an increased power consumption value, and a difference between a measure of the attribute corresponding to the current power consumption value and a measure of the attribute corresponding to the increased power consumption value;

means for allocating portions of the total power budget among the plurality of components based on priority by allocating a first portion to a component of the plurality of components having a largest rate of change; and

means for repeating the prioritizing and allocating for a next portion of power.

11. The apparatus of claim 10, wherein the means for prioritizing the plurality of components is configured to determine a priority for the plurality of components in order from the largest rate of change to a smallest rate of change.

12. The apparatus of claim 10, wherein a weight is associated with the component of the plurality of components and the means for prioritizing the plurality of components is configured to determine the rate of change for the component of the plurality of components by applying the weight to the determined rate of change for the component of the plurality of components to obtain a weighted rate of change.

13. The apparatus of claim 12, wherein the weight of the component of the plurality of components is determined by means configured to monitor one or more of a pattern of usage of the component, frequency of usage of the component, context of usage of the component, location of usage of the component or time of usage of the component.

14. The apparatus of claim 12, wherein the weight of the component of the plurality of components is predefined for the user device.

15. The apparatus of claim 11, wherein the means for prioritizing is further configured to remove the component of the plurality of components from the priority if its rate of change does not satisfy a minimum threshold.

16. The apparatus of claim 11, wherein the means for allocating the portions of the total power budget is configured to allocate to one or more of the plurality of components, a portion of power required to turn on the component of the plurality of components, wherein such allocation occurs prior to allocation of the first portion to the component having the largest rate of change.

17. The apparatus of claim 11, wherein the means for allocating portions of the total power budget power is configured to reduce power to the plurality of components in a reverse order that is reverse to the order of the priority.

18. The apparatus of claim 11, further comprising means for determining a measure of overall device performance, wherein the means for determining is configured to sum a plurality of individual performance measures, each individual performance measure being a function of a power demand for each component of the plurality of components, a current power allocated to each component of the plurality of components and a weight of each component of the plurality of components.

21. The apparatus of claim 10, wherein a weight is associated with the component of the plurality of components and the at least one processor is configured to determine the rate of change for the component of the plurality of components by applying the weight to the determined rate of change for the component of the plurality of components to obtain a weighted rate of change.

22. The apparatus of claim 21, wherein the at least one processor is configured to determine the weight of the component of the plurality of components by being further configured to monitor one or more of a pattern of usage of the component, frequency of usage of the component, context of usage of the component, location of usage of the component or time of usage of the component.

23. The apparatus of claim 21, wherein the weight of the component of the plurality of components is predefined for the user device.

19. An apparatus for allocating a total power budget among a plurality of components of a user device, said apparatus comprising:

a memory; and

at least one processor coupled to the memory and configured to;

prioritize the plurality of components based on a performance/power model for each of the plurality of components, wherein the performance/power model of a component of the plurality of components is defined by a plurality of measures of an attribute of the component of the plurality of components as a function of a corresponding plurality of power consumption values, and wherein the at least one processor prioritizes by being further configured to determine a rate of change for each of the plurality of components based on a difference between a current power consumption value and an increased power consumption value, and a difference between a measure of the attribute corresponding to the current power consumption value and a measure of the attribute corresponding to the increased power consumption value;

allocate portions of the total power budget among the plurality of components based on priority, wherein the at least one processor is further configured to allocate a first portion to a component of the plurality of components having a largest rate of change; and

repeat the prioritizing and allocating for a next portion of power.

20. The apparatus of claim 19, wherein the at least one processor is configured to determine a priority for the plurality of components in order from the largest rate of change to a smallest rate of change.

24. The apparatus of claim 20, wherein the at least one processor is further configured to remove the component of the plurality of components from the priority if its rate of change does not satisfy a minimum threshold.

25. The apparatus of claim 20, wherein the at least one processor is configured to allocate to one or more of the plurality of components, a portion of power required to turn on the component of the plurality of components, wherein such allocation occurs prior to allocation of the first portion to the component having the largest rate of change.

26. The apparatus of claim 20, wherein the at least one processor is configured to reduce power to the plurality of components in a reverse order that is reverse to the order of the priority.

27. The apparatus of claim 20, wherein the at least one processor is configured to determine a measure of overall device performance by being configured to sum a plurality of individual performance measures, each individual performance measure being a function of a power demand for each component of the plurality of components, a current power allocated to each component of the plurality of components and a weight of each component of the plurality of components.

28. A non-transitory computer-readable medium storing computer executable code for allocating a total power budget among a plurality of components of a user device, comprising code for:

prioritizing the plurality of components based on a performance/power model for each of the plurality of components, wherein the performance/power model of a component of the plurality of components is defined by a plurality of measures of an attribute of the component of the plurality of components as a function of a corresponding plurality of power consumption values, and wherein the prioritizing comprises determining a rate of change for each of the plurality of components based on a difference between a current power consumption value and an increased power consumption value, and a difference between a measure of the attribute corresponding to the current power consumption value and a measure of the attribute corresponding to the increased power consumption value;

allocating portions of the total power budget among the plurality of components based on the prioritizing by allocating a first portion to a component of the plurality of components having a largest rate of change; and

repeating the prioritizing and allocating for a next portion of power.

29. The non-transitory computer-readable medium of claim 28, further comprising code for determining a priority for the plurality of components in order from the largest rate of change to a smallest rate of change.

30. The non-transitory computer-readable medium of claim 28, wherein a weight is associated with the component of the plurality of components and further comprising code for applying the weight to the determined rate of change for the component of the plurality of components to obtain a weighted rate of change.

31. The non-transitory computer-readable medium of claim 30, comprising code for determining the weight of the component of the plurality of components by monitoring one or more of a pattern of usage of the component, frequency of usage of the component, context of usage of the component, location of usage of the component or time of usage of the component.

32. The non-transitory computer-readable medium of claim 30, wherein the weight of the component of the plurality of components is predefined for the user device.

33. The non-transitory computer-readable medium of claim 29, comprising code for removing the component of the plurality of components from the priority if its rate of change does not satisfy a minimum threshold.

34. The non-transitory computer-readable medium of claim 29, comprising code for allocating to one or more of the plurality of components, a portion of power required to turn on the component of the plurality of components, wherein such allocation occurs prior to allocating the first portion to the component having the largest rate of change.

35. The non-transitory computer-readable medium of claim 29, comprising code for reducing power to the plurality of components in a reverse order that is reverse to the order of the priority.

36. The non-transitory computer-readable medium of claim 29, comprising code for determining a measure of overall device performance based on a power demand of each component of the plurality of components, a current power allocated to each component of the plurality of components and a weight of each component of the plurality of components.

37. A method of allocating a total current budget among a plurality of components of a user device, said method comprising:

prioritizing the plurality of components based on a performance/current model for each of the plurality of components, wherein the performance/current model of a component of the plurality of components is defined by a plurality of measures of an attribute of the component of the plurality of components as a function of a corresponding plurality of current consumption values, and wherein the prioritizing comprises determining a rate of change for each of the plurality of components based on a difference between a current power consumption value and an increased power consumption value, and a difference between a measure of the attribute corresponding to the current power consumption value and a measure of the attribute corresponding to the increased power consumption value;

allocating portions of the total current budget among the plurality of components based on the prioritizing by allocating a first portion to a component of the plurality of components having the largest rate of change; and

repeating the prioritizing and allocating for a next portion of current.