Efficient Signal Strength Sampling for 802.11-Based Indoor Positioning Systems

The primary contribution of this paper is the novel Com-PoScan system that can mitigate the effect of scanning on concurrent communications. ComPoScan is based on movement detection to adaptively switch between light-weight monitor sniffing and invasive active scanning. Additionally, it provides an evaluation of the proposed system both by emulation and by validation in a real-world deployment. The emulation showed that movement detection system works independently of the environment, the network card, the signal strength measurement technology, and number and placement of access points.