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Identifier uch.csd.msc//2006katranidou
Title Εντοπισμός θέσης χρησιμοποιώντας την υποδομή του ΙΕΕΕ 802.11 και το δυομότιμο μοντέλο για κινητές υπολογιστικές εφαρμογές
Alternative Title Location-sensing using the IEEE 802.11 Infrastructure and the Peer-to-peer Paradigm for Mobile Computing Applications
Creator Katranidou, Anastasia
Abstract During the last years, there is a growing interest in location-based applications. For example, vehicles with navigation tools and location-based services, health monitoring and assistive technology, smart spaces, virtual reality applications, wearable computing, and games are becoming widely spread. For the support of location-dependent services, the positioning becomes critical. One such location-sensing mechanism is the Cooperative Location-sensing System (CLS) that exploits the mobile peer-to-peer (p2p) paradigm and the wireless communication infrastructure. We evaluated CLS analyzing the impact of range error, density of landmarks, density of wireless devices, and mobility on the accuracy of the position estimations. We extended CLS by incorporating a signal strength map, information about the environment, and mobility information. For example, considering 10% of hosts to be landmarks, average connectivity degree equal to 10, and range error equal to 10% of the transmission range, 80% of the hosts can position themselves with a location error of at most 0.8 meters, compared to 1.5 meters in the case of simple CLS. The same percentage of hosts can locate themselves with a location error of at most 2.6 meters, when 60% of them are mobile.
Issue date 2006-04-01
Date available 2006-07-19
Collection   School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses
  Type of Work--Post-graduate theses
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