Estimation of Position Using WLAN Access Point Radio Propagation Characteristics in a WLAN Positioning System
First Claim
1. A method of characterizing a WLAN access point, comprising:
- receiving a plurality of positions at which signals transmitted by a WLAN access point have been detected;
estimating a signal coverage area of the WLAN access point based on the plurality of positions at which the signals were detected;
dividing the signal coverage area of the WLAN access point into at least one section; and
assigning a weight to each section of the WLAN access point based on at least one of the estimated signal coverage area and the plurality of positions at which the signals were detected.
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Accused Products
Abstract
A method for estimating position using WLAN access point radio propagation characteristics in a WLAN location based service is provided. A location-based services system has a plurality of Wi-Fi access points in a target area. The Wi-Fi access points are positioned at geographic locations and have signal coverage areas. A method of characterizing at least one of the Wi-Fi access points comprises determining the geographic location of the Wi-Fi access point, dividing the signal coverage area of the Wi-Fi access point into at least one section, and determining radio propagation characteristics for each section. The radio propagation characteristics of each section characterize a radio channel of the Wi-Fi access point, and the characterization can be used in a location algorithm.
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Citations
10 Claims
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1. A method of characterizing a WLAN access point, comprising:
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receiving a plurality of positions at which signals transmitted by a WLAN access point have been detected; estimating a signal coverage area of the WLAN access point based on the plurality of positions at which the signals were detected; dividing the signal coverage area of the WLAN access point into at least one section; and assigning a weight to each section of the WLAN access point based on at least one of the estimated signal coverage area and the plurality of positions at which the signals were detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification