Part one: The Statistical Terminal Assisted Mobile Positioning methodology and architecture
Computer Communications
A directional propagation model for locating mobile stations within a mobile phone network
International Journal of Wireless and Mobile Computing
Location management scheme with WLAN positioning algorithm for integrated wireless networks
Computer Communications
Using the ellipse propagation model for mobile location estimation
International Journal of Wireless and Mobile Computing
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Recently, mobile location estimation is drawing considerableattention in the field of wireless communications.Among different mobile location estimation methods, theone which estimates the location of mobile stations with referenceto the wave propagation model is drawing much attention.This approach, in principle, makes use of the mostprimitive property of wave propagation - signal strength,to perform location estimation. Hence this approach shouldbe able to apply to different kinds of cellular network. Wefound out that in estimating mobile location with referenceto signal strength, the azimuth gain of directional antennaand environmental factors can help to improve the accuracy.In this paper, we report our study of a DirectionalPropagation Model (DPM) which enhanced the traditionalpropagation model with these factors. We experimented ourmodel with 3,703 sets of real life data collected from a majormobile phone operator of Hong Kong. Results show thatthe DPM models have significant improvement over otherexisting location methods in terms of accuracy and stability.