Transparent Location Fingerprinting for Wireless Services

Brunato, Mauro and Kiss Kalló, Csaba (2002) Transparent Location Fingerprinting for Wireless Services. UNSPECIFIED. (In Press)

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    Detecting the user location is crucial in a wireless environment, not only for the choice of first-hop communication partners, but also for many auxiliary purposes: Quality of Service (availability of information in the right place for reduced congestion/delay, establishment of the optimal path), energy consumption, automated insertion of location-dependent info into a web query issued by a user (for example a tourist asking informations about a monument or a restaurant, a fireman approaching a disaster area). The technique we propose in our investigation tries to meet two main goals: transparency to the network and independence from the environment. A user entering an environment (for instance a wireless-networked building) shall be able to use his own portable equipment to build a personal map of the environment without the system even noticing it. Preliminary tests allow us to detect position on a map with an average uncertainty of two meters when using information gathered from three IEEE802.11 access points in an indoor environment composed of many rooms on a 625sqm area. Performance is expected to improve when more access points will be exploited in the test area. Implementation of the same techniques on Bluetooth are also being studied.

    Item Type: Departmental Technical Report
    Department or Research center: Information Engineering and Computer Science
    Subjects: Q Science > QA Mathematics > QA075 Electronic computers. Computer science
    Uncontrolled Keywords: Wireless networks, location management, context-aware computing
    Additional Information: Proceedings of Med-Hoc-Net, Mediterranean Wokshop on Ad-hoc Networks, Baia Chia, Cagliari, september 2002
    Report Number: DIT-02-071
    Repository staff approval on: 17 Sep 2002

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