Enhanced triangulation method for positioning of moving devices

This paper proposes an improvement of triangulation methods for a moving device and evaluates the enhancement in detailed simulation experiments for the example use-case of an indoor scenario utilizing Bluetooth technology. Accurate positioning methods using short-range communication technologies are increasingly important for various applications including tracking as well as more general context-sensitive networking approaches and applications. Relevant positioning algorithms include triangulation based on measured link properties to several Base Stations. In the case of moving devices, accurate positioning becomes very challenging for two main reasons. On one hand measurement errors and changing propagation conditions require probabilistic approaches. On the other hand, due to the movement of the devices, the triangulation method based on multiple measurements becomes less accurate, since they cannot be obtained at exactly the same time instant. To mitigate these constraints, the proposed method is based on movement prediction. Keywords— Positioning, Movement Prediction, Triangulation, Bluetooth