TAILIEUCHUNG - Báo cáo hóa học: " Research Article Problem Solving of Low Data Throughput on Mobile Devices by Artefacts Prebuffering Ondrej Krejcar"

Research Article Problem Solving of Low Data Throughput on Mobile Devices by Artefacts Prebuffering Ondrej Krejcar | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 802523 8 pages doi 2009 802523 Research Article Problem Solving of Low Data Throughput on Mobile Devices by Artefacts Prebuffering Ondrej Krejcar Department of Measurement and Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science VSB Technical University of Ostrava 17 Listopadu 15 70833 Ostrava Poruba Czech Republic Correspondence should be addressed to Ondrej Krejcar Received 29 March 2009 Revised 29 July 2009 Accepted 11 November 2009 Recommended by Naveen Chilamkurti The paper deals with a problem of low data throughput on wirelessly connected mobile devices and a possibility to solve this problem by prebuffering of selected artefacts. The basics are in determining the problem parts of a mobile device and solve the problem by a model of data prebuffering-based system enhancement for locating and tracking users inside the buildings. The framework uses a WiFi network infrastructure to allow the mobile device determine its indoor position. User location is used for data prebuffering and for pushing information from a server to PDAs. All server data are saved as artefacts with its indoor position information. Accessing prebuffered data on a mobile device can significantly improve a response time needed to view large multimedia data. The solution was tested on a facility management information system built on purpose with a testing collection of about hundred large size artefacts. Copyright 2009 Ondrej Krejcar. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. Introduction The mobile wireless devices laptops PDA devices Smart phones etc. are commonly used with internet connection which is available almost everywhere .

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