System and method for asset location in wireless networks
First Claim
1. A computing arrangement for determining a location of a wireless communications device, comprising:
- a processor;
a memory arrangement storing a location of each of at least three access points; and
a communication arrangement receiving first data, the first data including at least one of first signal strength data and second signal strength data, the first signal strength data being indicative of a strength of a first signal transmitted by the device and received by the at least three access points, the second signal strength data being indicative of a strength of a second signal transmitted by the at least three access points and received by the device,wherein the processor determines a location area of the device as a function of the first data and the location, the location area being an area within a predetermined reception range of the at least three access points, andwherein the processor determines a location of the device within the location area as a function of second data and a further location of each of at least three further access points, the second data being indicative of a travel time of a third signal from the device to each of the at least three further access points.
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Accused Products
Abstract
Described is a system and method for tracking an asset. The system may include a plurality of wireless access points and a computing arrangement communicating with the access points. The arrangement determines a location area of the device as a function of first data and a location of each of at least three access points of the plurality of the access points. The first data includes at least one of first signal strength data and second signal strength data. The first signal strength data is indicative of a strength of a first signal transmitted by the device and received by the at least three access points. The second signal strength data is indicative of a strength of a second signal transmitted by the at least three access points and received by the device. The location area is an area within a predetermined reception range of the at least three local access points. The arrangement determines the location of the device within the location area as a function of second data and a further location of each of the at least three further access points of the plurality of access points. The second data is indicative of a travel time of a third signal from the device to each of the at least three further access points.
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Citations
20 Claims
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1. A computing arrangement for determining a location of a wireless communications device, comprising:
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a processor; a memory arrangement storing a location of each of at least three access points; and a communication arrangement receiving first data, the first data including at least one of first signal strength data and second signal strength data, the first signal strength data being indicative of a strength of a first signal transmitted by the device and received by the at least three access points, the second signal strength data being indicative of a strength of a second signal transmitted by the at least three access points and received by the device, wherein the processor determines a location area of the device as a function of the first data and the location, the location area being an area within a predetermined reception range of the at least three access points, and wherein the processor determines a location of the device within the location area as a function of second data and a further location of each of at least three further access points, the second data being indicative of a travel time of a third signal from the device to each of the at least three further access points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for determining a location of a wireless communication device, comprising:
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(a) determining a location area of the device as a function of first data and a location of each of at least three access points, the first data including at least one of first signal strength data and second signal strength data, the first signal strength data being indicative of a strength of a first signal transmitted by the device and received by the at least three access points, the second signal strength data being indicative of a strength of a second signal transmitted by the at least three access points and received by the device, the location area is an area within a predetermined reception range of the at least three local access points; and (b) after the step (a), determining the location of the device within the location area as a function of second data and a further location of each of at least three further access points, the second data being indicative of a travel time of a third signal from the device to each of the at least three further access points. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system for determining a location of a wireless communications device, comprising:
- a plurality of wireless access points; and
a computing arrangement communicating with the access points, the arrangement determining a location area of the device as a function of first data and a location of each of at least three access points of the plurality of access points, the first data including at least one of first signal strength data and second signal strength data, the first signal strength data being indicative of a strength of a first signal transmitted by the device and received by the at least three access points, the second signal strength data being indicative of a strength of a second signal transmitted by the at least three access points and received by the device, the location area being an area within a predetermined reception range of the at least three local access points, and wherein the arrangement determines the location of the device within the location area as a function of second data and a further location of each of at least three further access points of the plurality of access points, the second data being indicative of a travel time of a third signal from the device to each of the at least three further access points. - View Dependent Claims (18, 19, 20)
- a plurality of wireless access points; and
Specification