Systems for and methods of determining likelihood of atypical transmission characteristics of reference points in a positioning system
First Claim
1. A method of determining a measure of likelihood that a designated wireless device exhibits signal transmission range that is atypical of a wireless device of a type matching the designated wireless device and using the determination in a wireless positioning system, the method comprising:
- determining a set of one or more reference points associated with the designated wireless device, one or more of the reference points being at least one of (i) a geographic position at which signals from the designated wireless device were detected and (ii) another wireless device from which signals were also detected by a receiver within a selected period of time during which the signals from the designated wireless device were detected by the receiver;
determining statistical measures of a spatial distribution of the reference points of the set;
determining a measure of likelihood that the designated wireless device exhibits signal transmission range that is atypical of a wireless device of the type matching the designated wireless device based on the statistical measures of the spatial distribution; and
in response to the measure of likelihood, excluding the designated wireless device from being used by the wireless positioning system as a beacon for estimating a position of a client device.
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Accused Products
Abstract
Systems for and methods of determining likelihood of atypical transmission characteristics of reference points in a positioning system are disclosed. A method of determining a measure of likelihood that a designated wireless device exhibits signal transmission characteristics atypical of a wireless device of a type matching the designated device includes determining reference points associated with the designated device, which are a geographic position at which signals from the designated device were detected and/or another wireless device from which signals were also detected by a receiver within a selected period of time during which the signals from the designated device were detected. The method also includes determining statistical measures of a spatial distribution of the reference points and determining a measure of likelihood that the designated device exhibits signal transmission characteristics that are atypical of a wireless device of a type matching the designated device based on the statistical measures.
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Citations
38 Claims
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1. A method of determining a measure of likelihood that a designated wireless device exhibits signal transmission range that is atypical of a wireless device of a type matching the designated wireless device and using the determination in a wireless positioning system, the method comprising:
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determining a set of one or more reference points associated with the designated wireless device, one or more of the reference points being at least one of (i) a geographic position at which signals from the designated wireless device were detected and (ii) another wireless device from which signals were also detected by a receiver within a selected period of time during which the signals from the designated wireless device were detected by the receiver; determining statistical measures of a spatial distribution of the reference points of the set; determining a measure of likelihood that the designated wireless device exhibits signal transmission range that is atypical of a wireless device of the type matching the designated wireless device based on the statistical measures of the spatial distribution; and in response to the measure of likelihood, excluding the designated wireless device from being used by the wireless positioning system as a beacon for estimating a position of a client device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for determining a measure of likelihood that a designated wireless device exhibits signal transmission range that is atypical of a wireless device of a type matching the designated wireless device and using the determination in a wireless positioning system, the system comprising:
a computer readable media including instructions that when executed by a computer system cause the computer system to; determine a set of one or more reference points associated with a designated wireless device, one or more of the reference points being at least one of (i) a geographic position at which signals from the designated wireless device were detected and (ii) another wireless device from which signals were also detected by a receiver within a selected period of time during which the signals from the designated wireless device were detected by the receiver; determine statistical measures of a spatial distribution of the reference points of the set; determine a measure of likelihood that the designated wireless device exhibits signal transmission range that is atypical of a wireless device of a type matching the designated wireless device based on the statistical measures of the spatial distribution; and in response to the measure of likelihood, cause the designated wireless device to be excluded from use as a beacon for estimating a position of a client device by the wireless positioning system. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
Specification