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An investigation of link quality assessment for mobile multi-hop and multi-rate wireless networks
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems. (Communication Research)
2012 (English)In: Wireless personal communications, ISSN 0929-6212, E-ISSN 1572-834X, Vol. 65, no 2, 405-423 p.Article in journal (Refereed) Published
Abstract [en]

Wireless ad hoc networks will be an important component in future communication systems. The performance of wireless ad hoc networks can be improved by link quality-aware applications. Wireless link quality is dynamic in nature, especially in mobile scenarios. Therefore, accurate and fast packet delivery ratio estimation is a prerequisite to good performance in mobile, multi-hop and multi-rate wireless ad hoc networks. In this paper, we propose a novel packet delivery ratio estimation method that improves the accuracy and responsiveness of the packet delivery ratio estimation. The proposed link quality estimation components are implemented in a IEEE 802.11b/g test-bed. The experiment results show that the accuracy of the packet delivery ratio estimation can improve up to 50% in mobile scenarios without introducing overhead. We also show the end-to-end performance impact of this improved estimation on route selection using different routing metrics and configurations. The measurement results show that our packet delivery ratio method leads to better route selection in the form of increased end-to-end throughput compared to traditional methods, which respond slowly to the link dynamics.

Place, publisher, year, edition, pages
2012. Vol. 65, no 2, 405-423 p.
Keyword [en]
link quality assessment and measurement, mobile, multi-hop, multi-rate wireless networks, link quality aware routing
National Category
Communication Systems
Research subject
Computer Science with specialization in Computer Communication
URN: urn:nbn:se:uu:diva-196329DOI: 10.1007/s11277-011-0263-1OAI: oai:DiVA.org:uu-196329DiVA: diva2:609872
Available from: 2013-03-07 Created: 2013-03-07 Last updated: 2013-03-08Bibliographically approved

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