Controlling operational states of a location sensing system of a mobile device

1. A method of controlling a location sensing system of a mobile device, comprising:

collecting location related information of the mobile device; and

controllably setting the mobile device to operate in one of a high-power state, a low-power state, or a transitional state based on the collected location related information; wherein

a satellite-based positioning system receiver of the mobile device generates location information in the transitional state and in the high-power state, and the satellite-based positioning system receiver does not generate location information in the low-power state, and the satellite-based positioning system receiver consumes less power in the low-power state than in the high-power state and the transitional state; and wherein

when operating in the transitional state, the mobile device repeatedly checks the collected location related information and transitions to the low-power state or the high-power state based on the collected location related information, and if a transition is not made after a predetermined period of time, the controller automatically transitions the satellite-based positioning system receiver into either the high-power state or the low-power state; wherein

the mobile device is operable to transition to the low-power state from the transitional state, and operable to transition to the low-power state from the high-power state, and operable to only transition to the transitional state from the low-power state, and wherein conditional requirements of the location related information or location information is harder to meet in order for the mobile device to transition from the high-power state to the low-power state, than conditional requirements of the location related information or the location information to transition from the transitional state to the low-power state.

2. The method of claim 1 , wherein the high-power state comprises an on state, the low-power state comprises an off state, and the transitional state comprises a wake up state, and fourth state includes a standby state.

3. The method of claim 2 , wherein the wakeup state comprises a transition state wherein the satellite-based positioning system receiver runs, and after a period of collecting information, the satellite-based positioning system receiver maintains the wakeup state or transitions to the high-power state or the low-power state.

4. The method of claim 2 , wherein the during standby state the satellite-based positioning system receiver is turned off, and after a period of collecting information, the satellite-based positioning system receiver transitions from the standby state to the high-power state or maintains operation in the standby state.

5. The method of claim 1 , wherein if the conditional requirements of the location related information and location information in order for the mobile device to transition from the transitional state to the high-power state is not met within the predetermined time-out period of time, the mobile device is automatically transitioned to the low-power state.

6. The method of claim 1 , wherein the conditional requirements of the location related information or location information for the mobile device to transition from the high-power state to the low-power state, and the conditional requirements of the location related information or the location information for the mobile device to transition from the transitional state from the low-power state, are adaptively adjustable.

7. The method of claim 1 , further comprising obtaining location samples by the satellite-based positioning system receiver at a greater rate in the transitional state than in the high-power state.

8. The method of claim 1 , wherein the collected location related information comprises mobile information sensed by motion sensors of the mobile device.

9. The method of claim 1 , wherein the collected location related information comprises mobile information that includes a determination whether a location of the mobile device changed determined by analyzing received network signals.

10. The method of claim 1 , wherein the collected location related information comprises collected network location information of the mobile device.

11. The method of claim 1 , wherein the collected location related information comprises collected radio frequency (RF) beacon information of the mobile device.

12. The method of claim 1 , further comprising controllably transitioning the satellite-based positioning system receiver of the mobile device from operation in the high-power state to operation in the low-power state based on detecting signal loss of the satellite-based positioning system receiver for a certain time duration, or detecting that the mobile device has an average speed less than a threshold.

13. The method of claim 1 , further comprising maintaining satellite-based positioning system receiver in the high-power state based on detecting that a current speed of the mobile device is greater than a threshold or a computed speed ratio of the mobile device is greater than a threshold.

14. The method of claim 1 , further comprising controllably transitioning the satellite-based positioning system receiver of the mobile device from operation in the low-power state to operation in the transitional state based detecting that the mobile device is leaving a building, or detecting that a network location has changed greater than a threshold for a number location samples per a unit of time.

15. The method of claim 1 , further comprising maintaining the satellite-based positioning system receiver in the low-power state based on detecting sensing deviation of motion of the mobile device of less than a threshold.

16. The method of claim 1 , further comprising controllably transitioning the satellite-based positioning system receiver of the mobile device from operation in the transition state to operation in the low-power state based detecting that a satellite-based positioning system receiver wakeup was a false alarm after checking that a current speed of the mobile device is less than a threshold or a computed speed ratio of the mobile device is less than a threshold.

17. The method of claim 1 , further comprising controllably transitioning the satellite-based positioning system receiver of the mobile device from operation in the transition state to operation in the high-power state based on detecting that a current speed of the mobile device is greater than a threshold or a computed speed ratio of the mobile device is greater than a threshold.

18. The method of claim 1 , further comprising controllably maintaining the satellite-based positioning system receiver of the mobile device operating in the transitional state based on determining that enough information is not yet available to make a decision of whether to transition to the low-power state or the high-power state, and the mobile device has been operating in the transitional state for less than a time threshold.

19. The method of claim 1 , further comprising controllably transitioning the satellite-based positioning system receiver of the mobile device from operation in the high-power state to operation in a standby state based on detecting that the mobile device is moving a speed greater than a threshold.

20. The method of claim 1 , further comprising controllably transitioning the satellite-based positioning system receiver of the mobile device from operation in standby state to operation in a high-power state based on detecting a sensed motion of the mobile device greater than a threshold, or detecting a change is a gravity reference direction.

21. A mobile device, comprising:

a satellite-based positioning receiver;

a controller, the controller operative to set the mobile device to operate in one of a high-power state, a low-power state, or a transitional state based on the collected location related information, wherein the satellite-based positioning system receiver of the mobile device generates location information in the transitional state and in the high-power state, and the satellite-based positioning system receiver does not generate location information in the low-power state; wherein

when operating in the transitional state, the mobile device repeatedly checks the collected location related information and transitions to the low-power state or the high-power state based on the collected location related information, and if a transition is not made after a predetermined period of time, the controller automatically transitions the satellite-based positioning system receiver into either the high-power state or the low-power state; wherein

the mobile device is operable to transition to the low-power state from the transitional state, and operable to transition to the low-power state from the high-power state, and operable to only transition to the transitional state from the low-power state, and wherein conditional requirements of the location related information or location information is harder to meet in order for the mobile device to transition from the high-power state to the low-power state, than conditional requirements of the location related information or the location information to transition from the transitional state to the low-power state.

22. The mobile device of claim 21 , wherein if the conditional requirements of the location related information and location information in order for the mobile device to transition from the transitional state to the high-power state is not met within the predetermined period of time, the mobile device is automatically transitioned to the low-power state.

23. The mobile device of claim 21 , wherein the conditional requirements of the location related information or location information for the mobile device to transition from the high-power state to the low-power state, and the conditional requirements of the location related information or the location information for the mobile device to transition from the transitional state from the low-power state, are adaptively adjustable.

24. The mobile device of claim 21 , further comprising obtaining location samples by the satellite-based positioning system receiver at a greater rate in the transitional state than in the high-power state.