Distribution of Fingerprints for 802.11-based Positioning Systems


King, Thomas ; Butter, Thomas ; Brantner, Matthias ; Kopf, Stephan ; Haenselmann, Thomas ; Biskop, Alexander ; Färber, Andreas ; Effelsberg, Wolfgang


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URL: https://ub-madoc.bib.uni-mannheim.de/1351
URN: urn:nbn:de:bsz:180-madoc-13514
Document Type: Working paper
Year of publication: 2006
The title of a journal, publication series: Technical Reports
Volume: 06-019
Place of publication: Mannheim
Publication language: English
Institution: School of Business Informatics and Mathematics > Sonstige - Fakultät für Mathematik und Informatik
MADOC publication series: Veröffentlichungen der Fakultät für Mathematik und Informatik > Institut für Informatik > Technical Reports
Subject: 004 Computer science, internet
Subject headings (SWD): Positionierung , IEEE 802.11
Keywords (English): fingerprint distribution, positioning systems, 802.11, ubiquious computing, location-based services
Abstract: While indoor positioning systems based on 802.11 and fingerprinting work pretty well, it is unknown how to distribute a large amount of fingerprint data to mobile devices. Even worse, many mobile devices are restricted in terms of memory. In this demo proposal, we present two distribution approaches for fingerprints that fill this gap: the Strongest Access Point (SAP) and the Intersection of Access Points (IAP) algorithms. These approaches utilize the 802.11 infrastructure to download only a subset of the complete fingerprint data to a mobile device. The subset covers the area close to the actual position of the mobile device in such a way that position estimates can be computed. For the MDM~2007 demo session, we offer to demonstrate how these distribution approaches for fingerprint data work. The demo will include live indoor positioning of visitors using mobile devices while concurrently displaying the distribution of fingerprint data.

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King, Thomas ; Butter, Thomas ; Brantner, Matthias ; Kopf, Stephan ; Haenselmann, Thomas ; Biskop, Alexander ; Färber, Andreas ; Effelsberg, Wolfgang (2006) Distribution of Fingerprints for 802.11-based Positioning Systems. Open Access Technical Reports Mannheim 06-019 [Working paper]
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