GEOFENCE BREACH CONFIDENCE

• US 20130295970A1
• Filed: 12/20/2012
• Published: 11/07/2013
• Est. Priority Date: 05/01/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Sheshadri, Suhas H., Srivastava, Aditya N.
• Granted Patent: US 9,451,402 B2
• Time in Patent Office: Days
• US Class Current: 455/456.6
• CPC Class Codes: G01S 19/25 involving aiding data received from a cooperating element, e.g. assisted GPS
• CPC Class Codes: G01S 19/34 Power consumption
• CPC Class Codes: G01S 19/52 Determining velocity
• CPC Class Codes: H04W 4/021 Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences

Abstract

A system and method for a mobile device to efficiently use a geofence capability without draining its battery, and to allow flexibility in specifying various parameters related to geofencing, such as the latency and confidence in determining when or where a geofence breach occurs, and reducing the probability of not detecting a geofence breach.

Claims

1. A mobile device comprising a set of receivers, a first processor, a second processor, and a memory to store instructions that when executed on the first processor perform a process comprising:

selecting a receiver from the set of receivers based upon a breach confidence setting;

selecting a time interval based upon the breach confidence setting;

obtaining location information from the selected receiver during the time interval;

calculating a position of the mobile device using the location information;

determining a breach of a geofence based upon the location information;

waking up the second processor in response to the breach of the geofence.

2. The mobile device of claim 1, further comprising:

a modem, wherein the modem comprises the first processor;

an application processor, wherein the application processor comprises the second processor.

3. The mobile device of claim 1, wherein the set of receivers comprises a WWAN (Wireless Wide Area Network) receiver and a GNSS (Global Navigation Satellite System) receiver.

4. The mobile device of claim 1, further comprising:

indexing into a table based upon the breach confidence setting to select the receiver and the time interval, wherein the table is stored in the memory.

5. A method to indicate a geofence breach of a mobile device, the method comprising:

providing a geofence client to a first processor in the mobile device, wherein the geofence client specifies a breach confidence setting;

selecting a receiver from a set of receivers in the mobile device based upon the breach confidence setting;

selecting a time interval based upon the breach confidence setting;

obtaining location information from the selected receiver during the time interval;

calculating a position of the mobile device using the location information;

determining a breach of a geofence based upon the location information;

waking up a second processor in the mobile device in response to the breach of the geofence.

6. The method of claim 5, wherein a modem comprises the first processor, and wherein the second processor is an application processor for the mobile device.

7. The method of claim 5, wherein the set of receivers comprises a WWAN (Wireless Wide Area Network) receiver and a GNSS (Global Navigation Satellite System) receiver.

8. The method of claim 5, further comprising:

indexing into a table based upon the breach confidence setting to select the receiver and the time interval, wherein the table is stored in a memory of the mobile device.

9. A computer-readable storage medium having instructions stored therein to cause a mobile device to execute a process comprising:

providing a geofence client to a first processor in the mobile device, wherein the geofence client specifies a breach confidence setting;

selecting a receiver from a set of receivers in the mobile device based upon the breach confidence setting;

selecting a time interval based upon the breach confidence setting;

obtaining location information from the selected receiver during the time interval;

calculating a position of the mobile device using the location information;

determining a breach of a geofence based upon the location information;

waking up a second processor in the mobile device in response to the breach of the geofence.

10. The computer-readable storage medium of claim 9, wherein a modem comprises the first processor, and wherein the second processor is an application processor for the mobile device.

11. The computer-readable storage medium of claim 9, wherein the set of receivers comprises a WWAN (Wireless Wide Area Network) receiver and a GNSS (Global Navigation Satellite System) receiver.

12. The computer-readable storage medium of claim 9, the process further comprising:

indexing into a table based upon the breach confidence setting to select the receiver and the time interval, wherein the table is stored in a memory of the mobile device.

13. A mobile device comprising a set of receivers, a modem, and an application processor, the modem including a memory to store instructions that when executed on the modem perform a process comprising:

means for selecting a receiver from the set of receivers based upon a breach confidence setting;

means for selecting a time interval based upon the breach confidence setting;

means for obtaining location information from the selected receiver during the time interval;

means for calculating a position of the mobile device using the location information;

means for determining a breach of a geofence based upon the location information;

means for waking up the application processor in response to the breach of the geofence.

14. The mobile device of claim 13, wherein the set of receivers comprises a WWAN (Wireless Wide Area Network) receiver and a GNSS (Global Navigation Satellite System) receiver.

15. The mobile device of claim 13, further comprising:

means for indexing into a table based upon the breach confidence setting to select the receiver and the time interval, wherein the table is stored in the memory.