Providing a power state alter signal to a device based upon a position signal corresponding to the mobile device

1. A method for altering a power state of a device, comprising:

while the device is operating at a reduced power state:

generating a position signal indicative of a location of the device;

comparing the position signal to a power altering rule providing for altering the power state of the device from the reduced power state to an increased power state, different than the reduced power state, when the device is within a specified geographic range of a desired location; and

generating a power state alter signal responsive to the position signal satisfying the power altering rule, the power state alter signal configured to initiate altering the power state of the device from the reduced power state to the increased power state, the increased power state providing for one or more functionalities that are not provided when the device is operating at the reduced power state; and

while the device is operating at the increased power state:

providing a message pertaining to the desired location on the device responsive to the position signal satisfying the power altering rule.

2. The method of claim 1 , comprising:

searching a calendar associated with a user of the device to determine the desired location.

3. The method of claim 1 , the message describing an event associated with the desired location.

4. The method of claim 1 , the device comprising a mobile device.

5. The method of claim 1 , the device comprising a cellular telephone.

6. The method of claim 1 , the message comprising at least one of a visual message or an audio message.

7. The method of claim 1 , the desired location corresponding to a location of a second device.

8. The method of claim 7 , comprising:

sending a second message from the device to the second device responsive to the position signal satisfying the power altering rule.

9. The method of claim 1 , the generating a position signal comprising:

generating the position signal via a location signal receiver configured to receive power while the device is operating at the reduced power state.

10. The method of claim 9 , the location signal receiver comprising at least one of a global navigation satellite system (GNSS) receiver or an advanced global positioning system (AGPS) receiver.

11. The method of claim 1 , the generating a power state alter signal comprising:

computing an accuracy of a correlation between the power altering rule and the position signal; and

generating the power state alter signal when the accuracy of the correlation is above a specified threshold.

12. A system for altering a power state of a device, comprising:

one or more processing units; and

memory comprising instructions that when executed by at least some of the one or more processing units perform a method, comprising:

while the device is operating at a reduced power state:

generating a position signal indicative of a location of the device;

comparing the position signal to a power altering rule providing for altering the power state of the device from a reduced power state to an increased power state, different than the reduced power state, when the device is within a specified geographic range of a desired location; and

generating a power state alter signal responsive to the position signal satisfying the power altering rule, the power state alter signal configured to initiate altering the power state of the device from the reduced power state to the increased power state, the increased power state providing for one or more functionalities that are not provided when the device is operating at the reduced power state; and

while the device is operating at the increased power state:

providing a message pertaining to the desired location on the device responsive to the position signal satisfying the power altering rule.

13. The system of claim 12 , the method comprising:

identifying the desired location from a calendar entry of a calendar associated with a user of the device.

14. The system of claim 12 , the message comprising at least one of a visual message, an audio message, or a tactile message.

15. The system of claim 12 , the device comprising a mobile device.

16. The system of claim 12 , the generating a position signal comprising:

generating the position signal via a location signal receiver configured to receive power while the device is operating at the reduced power state.

17. The system of claim 16 , the location signal receiver comprising at least one of a global navigation satellite system (GNSS) receiver or an advanced global positioning system (AGPS) receiver.

18. The system of claim 12 , the generating a power state alter signal comprising:

computing an accuracy of a correlation between the power altering rule and the position signal; and

generating the power state alter signal when the accuracy of the correlation is above a specified threshold.

19. The system of claim 12 , the desired location corresponding to a location of a second mobile device.

20. A computer-readable memory not comprising a propagated data signal and comprising instructions that when executed perform a method for altering a power state of a device, the method comprising:

while the device is operating at a reduced power state:

generating a position signal indicative of a location of the device;

comparing the position signal to a power altering rule providing for altering the power state of the device from a reduced power state to an increased power state, different than the reduced power state, when the device is within a specified geographic range of a desired location; and

generating a power state alter signal responsive to the position signal satisfying the power altering rule, the power state alter signal configured to initiate altering the power state of the device from the reduced power state to the increased power state, the increased power state providing for one or more functionalities that are not provided when the device is operating at the reduced power state; and

while the device is operating at the increased power state:

providing a message pertaining to the desired location on the device responsive to the position signal satisfying the power altering rule.