Geographical boundary based tracking
First Claim
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1. A method for tracking an asset, the method comprising:
- obtaining a geographical boundary;
receiving fix data comprising uncertainty parameters defining an area of uncertainty;
determining an over-inclusive area of uncertainty based on at least one of the uncertainty parameters;
determining a relationship between the geographical boundary and the area of uncertainty based on the over-inclusive area of uncertainty, wherein the relationship comprises one of possible relationships comprising a relationship in which the area of uncertainty is completely inside the geographical boundary;
a relationship in which the area of uncertainty is completely outside the geographical boundary; and
an indeterminate relationship;
resolving the indeterminate relationship using a first order test to determine whether the area of uncertainty is inside the geographical boundary or outside the geographical boundary; and
reporting an event based on a change from a previous determined relationship.
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Abstract
An apparatus, method and system for geographical tracking entry and/or exiting of an asset into and/or out of a defined geographical boundary and reporting the same. Entry and exit tests compare position fixes with various thresholds and parameters to determine if the asset has entered or exited the geographical boundary. Tests are sequenced such that tests having lower levels of complexity (lower order) are performed before tests having higher levels of complexity (higher order). In this way, most position fixes are processed using computations having a lower order of mathematical complexity than conventionally implemented.
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Citations
37 Claims
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1. A method for tracking an asset, the method comprising:
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obtaining a geographical boundary; receiving fix data comprising uncertainty parameters defining an area of uncertainty; determining an over-inclusive area of uncertainty based on at least one of the uncertainty parameters; determining a relationship between the geographical boundary and the area of uncertainty based on the over-inclusive area of uncertainty, wherein the relationship comprises one of possible relationships comprising a relationship in which the area of uncertainty is completely inside the geographical boundary;
a relationship in which the area of uncertainty is completely outside the geographical boundary; and
an indeterminate relationship;resolving the indeterminate relationship using a first order test to determine whether the area of uncertainty is inside the geographical boundary or outside the geographical boundary; and reporting an event based on a change from a previous determined relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system for tracking an asset, the system comprising:
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means for obtaining a geographical boundary; means for receiving fix data comprising uncertainty parameters defining an area of uncertainty; means for determining an over-inclusive area of uncertainty based on at least one of the uncertainty parameters; means for determining a relationship between the geographical boundary and the area of uncertainty based on the over-inclusive area of uncertainty, wherein the relationship comprises one of possible relationships comprising a relationship in which the area of uncertainty is completely inside the geographical boundary;
a relationship in which the area of uncertainty is completely outside the geographical boundary; and
an indeterminate relationship;means for resolving the indeterminate relationship using a first order test to determine whether the area of uncertainty is inside the geographical boundary or outside the geographical boundary; and means for reporting an event based on a change from a previous determined relationship. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. A geographical tracking device comprising a processor and a memory wherein the memory includes software instructions to:
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obtain a geographical boundary; receive fix data comprising uncertainty parameters defining an area of uncertainty; determine an over-inclusive area of uncertainty based on at least one of the uncertainty parameters; determine a relationship between the geographical boundary and the area of uncertainty based on the over-inclusive area of uncertainty, wherein the relationship comprises one of possible relationships comprising a relationship in which the area of uncertainty is completely inside the geographical boundary;
a relationship in which the area of uncertainty is completely outside the geographical boundary; and
an indeterminate relationship;resolve the indeterminate relationship using a first order test to determine whether the area of uncertainty is inside the geographical boundary or outside the geographical boundary; and report an event based on a change from a previous determined relationship.
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37. A non-transitory computer-readable medium including program code stored thereon, comprising program code to:
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obtain a geographical boundary; receive fix data comprising uncertainty parameters defining an area of uncertainty; determine an over-inclusive area of uncertainty based on at least one of the uncertainty parameters; determine a relationship between the geographical boundary and the area of uncertainty based on the over-inclusive area of uncertainty, wherein the relationship comprises one of possible relationships comprising a relationship in which the area of uncertainty is completely inside the geographical boundary;
a relationship in which the area of uncertainty is completely outside the geographical boundary; and
an indeterminate relationship;resolve the indeterminate relationship using a first order test to determine whether the area of uncertainty is inside the geographical boundary or outside the geographical boundary; and report an event based on a change from a previous determined relationship.
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Specification