METHOD FOR DYNAMIC CREATION OF A GEOFENCE IN A WIRELESS SYSTEM
First Claim
Patent Images
1. A method for creating a dynamic geo-fence area comprising:
- determining an instant reference point using a first set of pseudorange measurements received by a geo-fence device;
defining the dynamic geo-fence area referenced to the instant reference point;
determining a position fix using a second set of pseudorange measurements; and
comparing the position fix to the dynamic geo-fence area.
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Abstract
A method and apparatus for creating a dynamic GeoFence area by determining an instant reference point using a first set of pseudorange measurements received by a GeoFence device, defining the dynamic GeoFence area referenced to the instant reference point, determining a position fix using a second set of pseudorange measurements, and comparing the position fix to the dynamic GeoFence area. In one aspect, an alert message based on the comparison results is presented to a user.
141 Citations
42 Claims
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1. A method for creating a dynamic geo-fence area comprising:
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determining an instant reference point using a first set of pseudorange measurements received by a geo-fence device; defining the dynamic geo-fence area referenced to the instant reference point; determining a position fix using a second set of pseudorange measurements; and comparing the position fix to the dynamic geo-fence area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for creating a dynamic geo-fence area comprising:
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determining an instant reference point using a first set of pseudorange measurements received by a geo-fence device; defining the dynamic geo-fence area referenced to the instant reference point; determining a position fix using a second set of pseudorange measurements; comparing the position fix to the dynamic geo-fence area; updating the position fix after a first wait time; updating the instant reference point after a second wait time and redefining the dynamic geo-fence area based the updated instant reference point; and comparing the updated position fix to the redefined dynamic geo-fence area. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A method for monitoring dynamic geo-fence areas comprising:
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defining n quantity of dynamic geo-fence areas for n quantity of tracked devices; monitoring the n quantity of dynamic geo-fence areas to determine overlap between the n quantity of dynamic geo-fence areas; and presenting an alert message if at least one of the n quantity of dynamic geo-fence areas does or does not overlap with at least one other of the n quantity of dynamic geo-fence area.
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27. The method of 26 wherein the defining n quantity of dynamic geo-fence areas is performed by a position tracking and management entity.
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28. The method of 27 wherein the monitoring the n quantity of dynamic geo-fence areas is performed by the position tracking and management entity.
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29. A geo-fence device comprising:
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a hardware unit for receiving a first set of pseudorange measurements; a processing unit for determining an instant reference point based on the first set of pseudorange measurements, wherein the processing unit further defines a dynamic geo-fence area based on the instant reference point; and an interface unit for receiving a position fix, wherein the processing unit compares the position fix to the dynamic geo-fence area. - View Dependent Claims (30, 31, 32, 33)
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34. A computer-readable medium including program code stored thereon comprising:
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program code to determine an instant reference point using a first set of pseudorange measurements received by a geo-fence device; program code to define the dynamic geo-fence area referenced to the instant reference point; program code to determine a position fix using a second set of pseudorange measurements; and program code to compare the position fix to the dynamic geo-fence area. - View Dependent Claims (35, 36, 37, 38, 39)
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40. An apparatus, comprising:
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means for determining an instant reference point using a first set of pseudorange measurements received by a geo-fence device; means for defining the dynamic geo-fence area referenced to the instant reference point; means for determining a position fix using a second set of pseudorange measurements; and means for comparing the position fix to the dynamic geo-fence area. - View Dependent Claims (41)
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42. An apparatus, comprising:
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means for defining n quantity of dynamic geo-fence areas for n quantity of tracked devices; means for monitoring the n quantity of dynamic geo-fence areas to determine overlap between the n quantity of dynamic geo-fence areas; and means for presenting an alert message if at least one of the n quantity of dynamic geo-fence areas does or does not overlap with at least one other of the n quantity of dynamic geo-fence area.
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Specification