Estimating the Location of a Wireless Terminal Based on Non-Uniform Locations
First Claim
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11. A method comprising:
- modeling an environment as a plurality of locations, wherein the boundaries of one or more of said plurality of locations are based, at least in part, on the physical attributes of said environment; and
estimating the location of a wireless terminal in said environment based on comparing a measurement of a trait of a signal processed by said wireless terminal to an expected value of said trait for one or more of a plurality of locations.
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Abstract
A technique for estimating the location of a wireless terminal at an unknown location in a geographic region is disclosed. The technique is based on the recognition that there are traits of electromagnetic signals that are dependent on topography, the receiver, the location of the transmitter, and other factors. For example, if a particular radio station is known to be received strongly at a first location and weakly at a second location, and a given wireless terminal at an unknown location is receiving the radio station weakly, it is more likely that the wireless terminal is at the second location than at the first location.
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Citations
24 Claims
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11. A method comprising:
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modeling an environment as a plurality of locations, wherein the boundaries of one or more of said plurality of locations are based, at least in part, on the physical attributes of said environment; and
estimating the location of a wireless terminal in said environment based on comparing a measurement of a trait of a signal processed by said wireless terminal to an expected value of said trait for one or more of a plurality of locations. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method comprising estimating the location of a wireless terminal in a geographic region environment based on comparing a measurement of a trait of a signal processed by said wireless terminal to an expected value of said trait for one or more of a plurality of locations;
wherein the boundaries of one or more of said plurality of locations are based, at least in part, on theoretical predictions and empirical data regarding the location and movement of individuals and groups of people and vehicles in geographic region 220. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 22, 23, 24)
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24-1. The method of claim 21 wherein the boundaries of one or more of said plurality of locations are based, at least in part, on the physical attributes of said environment.
Specification