Estimating and preserving battery life based on usage patterns

• US 9,632,556 B2
• Filed: 10/16/2015
• Issued: 04/25/2017
• Est. Priority Date: 06/07/2011
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Flores Assad, Javier N., Saba, Maher Afif, Apostolopoulos, Pantelis, Deschamps, Daniel Guilherme Paixao, Calinov, Iulian D., Thapanakul, Wanittha
• Primary Examiner(s): Elamin, M
• Application Number:
  US14/885,653
• Publication Number:
  US 20160041598A1
• Time in Patent Office: 557 Days
• CPC Class Codes: G06F 1/3212 Monitoring battery levels, e.g. power saving mode being initiated when battery voltage goes below a certain level
• CPC Class Codes: G06F 1/325 Power saving in peripheral device
• CPC Class Codes: G06F 1/329 by task scheduling
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Embodiments apply user-specific usage patterns to estimate and preserve remaining battery life on a computing device. An amount of battery drain and an execution context are determined and stored for a plurality of recurring time periods. The execution context identifies operations executed by the computing device, signal strength, and other data describing the associated time period. If one of the operations is expected to be executed during a recurrence of at least one of the time periods, the expected execution is adjusted based on execution context and an estimated remaining battery life for the computing device. For example, the computing device may postpone or reschedule the operation for a time period during which the operation is expected to have a greater likelihood of completing successfully. In some embodiments, the battery preservation operations are automatically enabled at a particular threshold.

Claims

1. A system comprising:

a memory area associated with a computing device, said memory area storing a plurality of battery records that include an amount of battery drain and corresponding operations executed by the computing device during a plurality of defined periods of time; and

a processor programmed to;

identify an expected execution of an operation during one of the plurality of defined periods of time;

determine, from the battery records, an expected battery drain during the one of the plurality of defined periods of time; and

adjust a timing of the expected execution of the operation based on an estimated remaining battery life for the computing device and the expected battery drain during the one of the plurality of defined periods of time.

3. The system of claim 1, wherein the estimated remaining battery life is calculated based on previous discharge data stored in the plurality of the battery records.

4. The system of claim 1, wherein the estimated remaining battery life is specific to a particular user and is calculated based on a regular activity of the particular user.

6. The system of claim 1, wherein the memory area represents cloud storage, and wherein the processor is programmed to predict the battery drain by estimating, based on the plurality of battery records stored in the cloud storage, the remaining battery life for the computing device.

7. The system of claim 1, wherein the battery drain stored in the plurality of battery records represents a linear approximation of a battery discharge rate observed during the one of the plurality of recurring time periods.

8. The system of claim 1, wherein the plurality of defined periods of time are dynamic based on a type of the computing device.

9. The system of claim 1, wherein the processor is further programmed to calculate a rolling average of the battery drain based on the plurality of battery records stored in the memory area, and wherein the processor is further programmed to predict the battery drain for the computing device during the plurality of defined periods of time based on the calculated rolling average of the battery drain.

10. The system of claim 1, wherein the processor is further programmed to analyze the plurality of battery records stored in the memory area to identify one or more of operations having an amount of battery drain exceeding a pre-defined threshold.

11. The system of claim 1, wherein the processor is further programmed to analyze the plurality of battery records stored in the memory area to identify one or more of the plurality of defined periods of time during which the operations have a success rate exceeding a pre-defined threshold.

2. The system of clam 1, wherein the processor is further programmed to

determine data usage statistics relating to the one of the plurality of defined periods of time and

update the plurality of battery records with the determined data usage statistics, wherein the updated battery records represent a usage pattern for use when estimating and preserving battery life.

5. The system of claim 2, wherein the processor is programmed to adjust the identified expected execution of the operation by:

determining if a success rate of the operation during the one of the plurality of defined periods of time is less than a pre-defined threshold;

based on said determining, identifying another period of time during which a success rate of the operation is greater than the pre-defined threshold; and

rescheduling the identified expected execution of the operation for said another period of time.

12. A method comprising

identifying an expected execution of an operation during one of a plurality of time periods, wherein said identifying includes selecting battery records from a plurality of battery records, the selected battery records corresponding to the plurality of time periods;

determine, from the battery records, an expected battery drain during the one of the plurality of time periods; and

adjust a timing of the expected execution of the operation based on an estimated remaining battery life for a computing device and the expected battery drain during the one of the plurality of time periods.

13. The method of claim 12, further comprising:

detecting a change in a charge of a battery associated with the computing device; and

detecting when the charge is less than a pre-defined threshold and then automatically enabling battery preservation operations, wherein the battery preservation operations are automatically suspended when the charge is more than the pre-defined threshold.

14. The method of claim 13, further comprising accessing the plurality of battery records to determine when a user charges the computing device.

15. The method of claim 12, wherein one or more of the plurality of battery records are defined by the computing device for a plurality of recurring time periods, the one or more of the plurality of battery records including an amount of battery drain and a corresponding, execution context.

16. The method of claim 12, further comprising calculating power consumption for the operation based on the plurality of battery records to create a power consumption profile for the operation.

17. The method of claim 12, further comprising analyzing the plurality of battery records to produce power consumption profiles for a plurality of users or a plurality of geographical areas.

18. A computer storage media comprising computer executable instructions that when executed by a processor perform operations comprising:

accessing, by a component executing on a computing device, a plurality of battery records that include an amount of battery drain and corresponding operations executed by the computing device during a plurality of time periods;

identifying an expected execution of an operation during one of a plurality of time periods wherein identifying includes selecting battery records corresponding to the plurality of time periods;

determining, from the battery records, an expected battery drain during the one of the plurality of time periods; and

adjusting a timing of the expected execution of the operation based on an estimated remaining battery life for a computing device and the expected battery drain during the one of the plurality of time periods.

19. The computer storage media of claim 18, wherein the computer executable instructions, when executed by the processor, further perform operations comprising:

identifying at least one of a plurality of recurring time periods during which the computing device is charged; and

notifying a user of the computing device upon determining that the calculated, estimated remaining battery life is insufficient to last until a recurrence of said at least one of the plurality of recurring time periods.

20. The computer storage media of claim 18, wherein the computer executable instructions, when executed by the processor, further perform operations comprising determining a probability of the computing device being able to meet an expected discharge until a next expected charge cycle.