Patent ID: 8787930
Filing Date: 2014-07-22
Classification: G01S,H04W

Abstract:
1. A method of estimating a position of an access point (AP) in a Wi-Fi system, the method comprising: measuring a strength of a signal, transmitted by the AP, at three or more measurement points (MPs); selecting an imaginary attenuation factor; calculating a range between the AP and each of the MPs based on the imaginary attenuation factor and a strength of a signal measured at each of the MP; calculating an intersecting point of ranging circles in each of which a position of the MP is a center and the range between the MP and the AP is a radius; calculating a best intersecting point from among a plurality of the intersecting points obtained by repeating the calculating the range and the calculating the intersecting point of ranging circles while changing the imaginary attenuation factor; and estimating the best intersecting point as the position of the AP.