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Algorithms and Protocols Enhancing Mobility Support for Wireless Sensor Networks Based on Bluetooth and Zigbee
Mälardalens högskola, Institutionen för datavetenskap och elektronik.
2006 (Engelska)Doktorsavhandling, monografi (Övrigt vetenskapligt)
Abstract [en]

Mobile communication systems are experiencing a huge growth. While traditional communication paradigms deal with fixed networks, mobility raises a new set of questions, techniques, and solutions. This work focuses on wireless sensor networks (WSNs) where each node is a mobile device. The main objectives of this thesis have been to develop algorithms and protocols enabling WSNs with a special interest in overcoming mobility support limitations of standards such as Bluetooth and Zigbee. The contributions of this work may be divided in four major parts related to mobility support. The first part describes the implementation of local positioning services in Bluetooth since local positioning is not supported in Bluetooth v1.1. The obtained results are used in later implemented handover algorithms in terms of deciding when to perform the handover. Moreover local positioning information may be used in further developed routing protocols. The second part deals with handover as a solution to overcome the getting out of range problem. Algorithms for handover have been implemented enabling mobility in Bluetooth infrastructure networks. The principal achievement in this part is the significant reduction of handover latency since sensor cost and quality of service are directly affected by this parameter. The third part solves the routing problems originated with handovers. The main contribution of this part is the impact of the Bluetooth scatternet formation and routing protocols, for multi-hop data transmissions, in the system quality of service. The final part is a comparison between Bluetooth and Zigbee in terms of mobility support. The main outcome of this comparison resides on the conclusions, which can be used as a technology election guide.

The main scientific contribution relies on the implementation of a mobile WSN with Bluetooth v1.1 inside the scope of the ”Multi Monitoring Medical Chip (M3C) for Homecare Applications” European Union project (Sixth Framework Program (FP6) Reference: 508291) offering multi-hop routing support and improvements in handover latencies with aid of local positioning services.

Ort, förlag, år, upplaga, sidor
Västerås: Mälardalens högskola , 2006. , s. 160
Serie
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 32
Nyckelord [en]
Algorithm, Bluetooth, Mobility, Protocol, Wireless Sensor Network, Zigbee.
Nationell ämneskategori
Annan elektroteknik och elektronik
Forskningsämne
Elektronik
Identifikatorer
URN: urn:nbn:se:mdh:diva-154ISBN: 91-85485-21-7 (tryckt)OAI: oai:DiVA.org:mdh-154DiVA, id: diva2:120542
Disputation
2006-09-15, Kappa, U, Högskoleplan 1, Västerås, 14:00
Opponent
Handledare
Tillgänglig från: 2006-09-01 Skapad: 2006-09-01

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