Method and system for optimizing performance of a PCD while mitigating thermal generation

Patent metadata

Field	Value
Publication number	US-10082847-B2
Application number	US-201414289675-A
Country	US
Kind code	B2
Filing date	May 29, 2014
Priority date	Apr 1, 2014
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

A temperature of a component within the portable computing device (PCD) may be monitored along with a parameter associated with the temperature. The parameter associated with temperature may be an operating frequency, transmission power, or a data flow rate. It is determined if the temperature has exceeded a threshold value. If the temperature has exceeded the threshold value, then the temperature is compared with a temperature set point and a first error value is then calculated based on the comparison. Next, a first optimum value of the parameter is determined based on the first error value. If the temperature is below or equal to the threshold value, then a present value of the parameter is compared with a desired threshold for the parameter and a second error value is calculated based on the comparison. A second optimum value of the parameter may be determined based on the second error value.

First claim

What is claimed is:

1. A method for optimizing operation of a portable computing device, comprising:
monitoring, by a first control loop, temperature of a processing component within the portable computing device;
monitoring, by a second control loop, a control parameter affecting thermal generation by the processing component and affecting performance of the portable computing device, the control parameter having a present value;
determining if the temperature has exceeded a threshold value; and
based on the temperature determination, applying a dual loop control scheme, wherein:
if the temperature has exceeded the threshold value, adjusting the control parameter in response to the first control loop based on a set point for the temperature; and
if the temperature is below or equal to the threshold value, adjusting the control parameter in response to the second control loop based on a target for the control parameter.

2. The method of claim 1 , wherein the control parameter comprises at least one of operating frequency, transmission power, and a data flow rate.

3. The method of claim 1 , wherein the target for the control parameter is set during manufacture of the portable computing device.

4. The method of claim 1 , wherein the processing component comprises at least one of a central processing unit, a core of a central processing unit, a graphical processing unit, a digital signal processor, a modem, and a RF-transceiver.

5. The method of claim 1 , wherein the method is applied individually to each of a plurality of processing components of the portable computing device.

6. The method of claim 5 , wherein the plurality of processing components comprise one or more of a central processing unit, a core of a central processing unit, a graphical processing unit, a digital signal processor, a modem, and a RF-transceiver.

7. The method of claim 1 , wherein the portable computing device comprises at least one of a mobile telephone, a personal digital assistant, a pager, a smartphone, a navigation device, and a hand-held computer with a wireless connection or link.

8. A computer system for optimizing operation of a portable computing device, the system comprising:
a processor operable for:
monitoring, by a first control loop, temperature of a processing component within the portable computing device;
monitoring, by a second control loop, a control parameter affecting thermal generation by the processing component and affecting performance of the portable computing device, the control parameter having a present value;
determining if the temperature has exceeded a threshold value; and
based on the temperature determination, applying a dual loop control scheme, wherein:
if the temperature has exceeded the threshold value, adjusting the control parameter in response to the first control loop based on a set point for the temperature; and
if the temperature is below or equal to the threshold value, adjusting the control parameter in response to the second control loop based on a target for the control parameter.

9. The system of claim 8 , wherein the control parameter comprises at least one of operating frequency, transmission power, and a data flow rate.

10. The system of claim 8 , wherein the target for the control parameter is set during manufacture of the portable computing device.

11. The system of claim 8 , wherein the processing component comprises at least one of a central processing unit, a core of a central processing unit, a graphical processing unit, a digital signal processor, a modem, and a RF-transceiver.

12. The system of claim 8 , wherein the processor is further operable for applying the recited steps individually to each of a plurality of processing components of the portable computing device.

13. The system of claim 12 , wherein the plurality of processing components comprise one or more of a central processing unit, a core of a central processing unit, a graphical processing unit, a digital signal processor, a modem, and a RF-transceiver.

14. The system of claim 8 , wherein the portable computing device comprises at least one of a mobile telephone, a personal digital assistant, a pager, a smartphone, a navigation device, and a hand-held computer with a wireless connection or link.

15. A computer system for optimizing operation of a portable computing device, the system comprising:
means for monitoring, by a first control loop, temperature of a processing component within the portable computing device;
means for monitoring, by a second control loop, a control parameter affecting thermal generation by the processing component and affecting performance of the portable computing device, the control parameter having a present value;
means for determining if the temperature has exceeded a threshold value; and
means for, based on the temperature determination, applying a dual loop control scheme, wherein:
if the temperature has exceeded the threshold value, adjusting the control parameter in response to the first control loop based on a set point for the temperature; and
if the temperature is below or equal to the threshold value, adjusting the control parameter in response to the second control loop based on a target for the control parameter.

16. The system of claim 15 , wherein the control parameter comprises at least one of operating frequency, transmission power, and a data flow rate.

17. The system of claim 15 , wherein the target for the control parameter is set during manufacture of the portable computing device.

18. A computer program product comprising a computer usable medium having a computer readable program code embodied therein, said computer readable program code adapted to be executed to implement a method for optimizing operation of a portable computing device, said method comprising:
monitoring, by a first control loop, temperature of a processing component within the portable computing device;
monitoring, by a second control loop, a control parameter affecting thermal generation by the processing component and affecting performance of the portable computing device, the control parameter having a present value;
determining if the temperature has exceeded a threshold value; and
based on the temperature determination, applying a dual loop control scheme, wherein:
if the temperature has exceeded the threshold value, adjusting the control parameter in response to the first control loop based on a set point for the temperature; and
if the temperature is below or equal to the threshold value, adjusting the control parameter in response to the second control loop based on a target for the control parameter.

19. The computer program product of claim 18 , wherein the control parameter comprises at least one of operating frequency, transmission power, and a data flow rate.

20. The computer program product of claim 18 , wherein the target for the control parameter is set during manufacture of the portable computing device.

21. The computer program product of claim 18 , wherein the processing component comprises at least one of a central processing unit, a core of a central processing unit, a graphical processing unit, a digital signal processor, a modem, and a RF-transceiver.

22. The computer program product of claim 18 , wherein the portable computing device comprises at least one of a mobile telephone, a personal digital assistant, a pager, a smartphone, a navigation device, and a hand-held computer with a wireless connection or link

Assignees

• Qualcomm Inc

Inventors

• Raman Vijay
• Derbyshire Amy
• Medrano Christopher
• Mathew Shiju Abraham
• Alton Ronald Frank
• Anderson Jon James

Classifications

• H10W40/10

  Arrangements for heating · CPC title

• H10W40/00

  Arrangements for thermal protection or thermal control (integrated devices comprising arrangements for thermal protection H10D89/60) · CPC title

• G06F1/206 Primary

  comprising thermal management · CPC title

• G06F1/324

  by lowering clock frequency · CPC title

• G06F1/3203

  Power management, i.e. event-based initiation of a power-saving mode · CPC title