System and method to initiate a housekeeping operation at a mobile device

• US 9,014,749 B2
• Filed: 08/12/2010
• Issued: 04/21/2015
• Est. Priority Date: 08/12/2010
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Toms, Thomas R., Rao, Hari M., Kang, Seung H., Kim, Jung Pill, Suh, Jungwon
• Primary Examiner(s): Patel, Nimesh
• Application Number:
  US12/855,045
• Publication Number:
  US 20120040712A1
• Time in Patent Office: 1,713 Days
• Field of Search: 455/550.1, 455/572, 455/573, 455/574, 320/114, 320/115, 320/133, 320/134, 320/136, 320/155
• US Class Current: 455/550.1
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: G06F 11/1048 using arrangements adapted for a specific error detection or correction feature
• CPC Class Codes: G11C 16/3418 Disturbance prevention or evaluation; Refreshing of disturbed memory data

Abstract

A system and method to initiate a housekeeping operation at a mobile device is disclosed. In a particular embodiment, a method at a mobile device includes modifying a scheduled housekeeping operation in response to determining that the mobile device is in a charging mode.

Claims

1. A method comprising:

detecting that a mobile device is charging;

in response to detecting that the mobile device is charging, modifying a schedule for performance of a scheduled housekeeping operation at the mobile device and

wherein the scheduled housekeeping operation comprises performing an error correction operation at a memory of the mobile device, performing a memory self-refresh operation at the memory of the mobile device, performing a transfer operation from volatile memory of the mobile device to non-volatile memory of the mobile device, or any combination thereof.

2. The method of claim 1, further comprising pausing the housekeeping operation in response to detecting that the mobile device is not charging.

3. The method of claim 2, further comprising resuming the housekeeping operation in response to detecting that the mobile device is charging after pausing the housekeeping operation.

4. The method of claim 1, further comprising executing the scheduled housekeeping operation when a housekeeping timer exceeds a threshold and the mobile device is not connected to a charger.

5. The method of claim 4, further comprising resetting the housekeeping timer in response to a completion of the housekeeping operation.

6. The method of claim 1, wherein modifying the scheduled housekeeping operation is performed at a processor integrated into the mobile device.

7. A method at a mobile device that executes housekeeping operations according to a schedule, the method comprising:

detecting that the mobile device is charging; and

in response to detecting that the mobile device is charging, initiating a housekeeping operation at the mobile device in accordance with a system-level policy of the mobile device, wherein the system-level policy comprises, when the mobile device is charging, initiating the housekeeping operation at a time other than a scheduled initiation time; and

wherein the housekeeping operation comprises performing an error correction operation at a memory of the mobile device, performing a memory self-refresh operation at the memory of the mobile device, performing a transfer operation from volatile memory of the mobile device to non-volatile memory of the mobile device, or any combination thereof.

8. The method of claim 7, wherein the housekeeping operation is applied to a component within the mobile device, and wherein the system-level policy is controlled external to the component.

9. The method of claim 8, wherein the component comprises at least one of a system-on-a-chip or a memory.

10. The method of claim 7, wherein the system-level policy comprises initiating the housekeeping operation when the mobile device is not connected to a charger in response to determining that a housekeeping timer exceeds a threshold.

11. The method of claim 7, wherein the system-level policy is user programmable.

12. The method of claim 7, wherein the detection that the mobile device is charging and the initiation of the housekeeping operation are performed at a processor integrated into the mobile device.

13. A method comprising:

relaxing a physical design requirement of a component of a mobile device based on an adjustable system-level policy controlled external to the component, wherein the adjustable system-level policy controls performance of a housekeeping operation based on, at least in part, whether the mobile device is charging; and

wherein the housekeeping operation comprises performing an error correction operation at a memory of the mobile device, performing a memory self-refresh operation at the memory of the mobile device, performing a transfer operation from volatile memory of the mobile device to non-volatile memory of the mobile device, or any combination thereof.

14. The method of claim 13, wherein the component comprises a memory, and further comprising:

selecting the adjustable system-level policy; and

wherein relaxing the design requirement comprises selecting a data retention characteristic of the component based on the adjustable system-level policy.

15. The method of claim 14, wherein selecting the data retention characteristic comprises reducing a retention capability of memory in the component in response to selecting in the adjustable system-level policy an increase in a refresh rate of the memory.

16. The method of claim 13, wherein relaxing the physical design requirement comprises reducing a write current for a data write operation at the component.

17. The method of claim 13, wherein the relaxing of the design requirement is performed at a processor integrated into the mobile device.

18. An apparatus comprising:

a component configured to execute a housekeeping operation at a mobile device according to a schedule; and

a power management integrated circuit configured to, when the component is operating according to the schedule, initiate the housekeeping operation at the component in response to detecting that the mobile device is charging and at a time other than a scheduled initiation time of the housekeeping operation; and

wherein the housekeeping operation comprises performing an error correction operation at a memory of the mobile device, performing a memory self-refresh operation at the memory of the mobile device, performing a transfer operation from volatile memory of the mobile device to non-volatile memory of the mobile device, or any combination thereof.

19. The apparatus of claim 18, wherein the power management integrated circuit implements a system-level policy to control initiation of the housekeeping operation.

20. The apparatus of claim 18, wherein the power management integrated circuit is further configured to instruct the component to initiate the housekeeping operation in response to a housekeeping timer exceeding a threshold.

21. The apparatus of claim 18, wherein the component comprises a memory device.

22. The apparatus of claim 18, integrated in at least one semiconductor die.

23. The apparatus of claim 18, further comprising at least one of a set top box, a music player, a video player, an entertainment unit, a navigation device, a communications device, a personal digital assistant (PDA), or a computer, into which the apparatus is integrated.

24. An apparatus comprising:

means for executing a housekeeping operation at a mobile device according to a schedule;

means for initiating the housekeeping operation, when the means for executing the housekeeping operation is operating according to the schedule, in response to detecting that the mobile device is charging and at a time other than a scheduled initiation time of the housekeeping operation; and

wherein the housekeeping operation comprises performing an error correction operation at a memory of the mobile device, performing a memory self-refresh operation at the memory of the mobile device, performing a transfer operation from volatile memory of the mobile device to non-volatile memory of the mobile device, or any combination thereof.

25. The apparatus of claim 24, integrated in at least one semiconductor die.

26. The apparatus of claim 24, further comprising at least one of:

a set top box, a music player, a video player, an entertainment unit, a navigation device, a communications device, a personal digital assistant (PDA), or a computer, into which the apparatus is integrated.

27. A method comprising:

at a mobile device that executes housekeeping operations according to a schedule;

a first step for detecting that the mobile device is charging; and

a second step for, in response to detecting that the mobile device is charging, initiating a housekeeping operation at the mobile device in accordance with a system-level policy of the mobile device, wherein the system-level policy comprises, when the mobile device is charging, initiating the housekeeping operation at a time other than a scheduled initiation timer; and

wherein the housekeeping operation comprises performing an error correction operation at a memory of the mobile device, performing a memory self-refresh operation at the memory of the mobile device, performing a transfer operation from volatile memory of the mobile device to non-volatile memory of the mobile device, or any combination thereof.

28. The method of claim 27, wherein the first step and the second step are performed by a processor integrated into the mobile device.

29. A computer-readable tangible medium storing instructions that, when executed by a processor of a mobile device that executes housekeeping operations according to a schedule, cause the processor to:

detect that the mobile device is charging;

in response to detecting that the mobile device is charging, initiate a housekeeping operation at the mobile device in accordance with a system-level policy of the mobile device, wherein the system-level policy comprises, when the mobile device is charging, initiating the housekeeping operation at a time other than a scheduled initiation time; and

wherein the housekeeping operation comprises performing an error correction operation at a memory of the mobile device, performing a memory self-refresh operation at the memory of the mobile device, performing a transfer operation from volatile memory of the mobile device to non-volatile memory of the mobile device, or any combination thereof.

30. The computer-readable tangible medium of claim 29, wherein the instructions are executable by a processor integrated in at least one of a set top box, a music player, a video player, an entertainment unit, a navigation device, a communications device, a personal digital assistant (PDA), or a computer.