Method and apparatus for power efficient user location profile determination in mobile devices
OwnerArdalan Heshmatiinventor
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Abstract
Systems and methods are disclosed for reducing power consumption of a mobile device in determining locations by determining if the mobile device is stationary; and if the mobile device is stationary, determining if the mobile device is in a zone with a known location and assign the known location as the location of the mobile device without involving a position determination system in the mobile device to reduce power consumption arising therefrom.
Claims20
A method for reducing power consumption of a mobile device in determining locations with a position determination system having an active mode where the position determination system has an activated mode that generates position data and a deactivated mode where the position determination system operates with minimal power consumption, comprising:
- a. determining once in advance a known location for a predetermined zone and storing said zone and location in a data storage device;
- b. determining if the mobile device is stationary;
- and
- c. if the mobile device is stationary, determining if the mobile device is in said predetermined zone with said known location and assigning the known location as the location of the mobile device and placing the position determination system in the deactivated mode to minimize power consumption arising from operating said position determination system.
A method for reducing power consumption of a mobile device in determining locations, comprising:
- a. determining if the mobile device is stationary;
- and
- b. if the mobile device is stationary, determining if the mobile device is in a zone with a known location and assigning the known location as the location of the mobile device without activating a position determination system in the mobile device to reduce power consumption arising from said activation, wherein the determining if the mobile device is stationary comprises:
- c. receiving an observation from one or more surrounding radio signals;
- d. forming a radio signature based on the received radio signals;
- e. correlating a current epoch signature with one or more prior epoch signatures;
- and
- f. indicating the mobile device is stationary when a high epoch signature correlation exists.
A mobile device, comprising:
- a. a processor;
- b. a position determination system coupled to the processor, wherein the position determination system has an active mode that generates position data and consumes power and a passive mode that minimizes power consumption;
- c. means for determining once in advance a known location for a predetermined zone and storing said zone and location in a data storage device;
- d. means for determining if the mobile device is stationary;
- and
- e. means for determining if the mobile device is stationary and in said zone with said known location, wherein the known location is assigned to the location of the mobile device while keeping the position determination system in the deactivated mode to reduce power consumption.
Dependencies are inferred from the claim text.