Abstract
This work addresses the gap regarding existing indoor location-awareness support solutions and their integration in real-world smart spaces composed of commodity mobile/fixed devices. The work describes experiences and lessons learnt in designing and implementing support for indoor location-based services within the framework of our research about smart space application platforms. The extensive usage of web technologies in our smart space application platform enables easy creation and mash-up of location based services in both ad hoc settings and interconnected environments. As for the indoor location sensing, the solution relies on a novel technique that is suitable for easy large-scale deployments on top of existing IEEE 802.11 wireless network infrastructures. The technique, which is based on received signal strength (RSS), is suitable for RSS measurements and location calculation to take place at the mobile terminal with minimum setup work. In addition, it does not require any proprietary hardware devices to be installed in the target environment. Experimental results, referring to different categories of mobile devices (commercial smartphones, PDAs and laptops), show that the technique performs quite well on commodity mobile devices in terms of power consumption and time required to calculate the indoor location.
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