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Transmission errors in a sensor network at the edge of the world
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems. (Communication Research)
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems. (Communication Research)
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems. (Communication Research)
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems. (Communication Research)
2013 (English)In: Proc. 5th Extreme Conference on Communication, New York: ACM Press, 2013Conference paper, Published paper (Refereed)
Abstract [en]

The performance of an outdoor wireless sensor network for remote monitoring is dictated by its ability to deliver sensed data to a sink. The often isolated location means that radio interference is typically low and with different patterns in transmission errors compared to an indoor deployment. To better understand these processes, we investigate packet errors in such a network. Specically, we study characteristics of decoding errors within 802.15.4 transmissions.

We describe the experimental deployment of an outdoor sensor network, located above the Arctic circle, where we log both successfully received and broken packets. Results indicate that a substantial amount of received packets contain errors, where the errors in each packet are typically few. We distinguish between transmission errors and payload errors, and find that transmission errors are equally probable over all positions of a packet, whereas bit errors in the payload are not. This results in some bits having a 25% higher risk of being corrupted than others.

Place, publisher, year, edition, pages
New York: ACM Press, 2013.
National Category
Computer Science Communication Systems
Identifiers
URN: urn:nbn:se:uu:diva-201447ISBN: 978-1-4503-2171-6 (print)OAI: oai:DiVA.org:uu-201447DiVA: diva2:627271
Conference
ExtremeCom 2013
Projects
CNDSWISENET
Available from: 2013-06-11 Created: 2013-06-11 Last updated: 2014-07-25
In thesis
1. Meteorological impact and transmission errors in outdoor wireless sensor networks
Open this publication in new window or tab >>Meteorological impact and transmission errors in outdoor wireless sensor networks
2013 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Wireless sensor networks have been deployed outdoors ever since their inception. They have been used in areas such as precision farming, tracking wildlife, and monitoring glaciers. These diverse application areas all have different requirements and constraints, shaping the way in which the sensor network communicates. Yet something they all share is the exposure to an outdoor environment, which at times can be harsh, uncontrolled and difficult to predict. Therefore, understanding the implications of an outdoor environment is an essential step towards reliable wireless sensor network operations.

In this thesis we consider aspects of how the environment influence outdoor wireless sensor networks. Specifically, we experimentally study how meteorological factors impact radio links, and find that temperature is most significant. This motivates us to further study and propose a first order model describing the impact of temperature on wireless sensor nodes. We also analyze transmission errors in an outdoor wireless sensor networks, identifying and explaining patterns in the way data gets corrupted. The findings lead to a design and evaluation of an approach for probabilistic recover of corrupt data in outdoor wireless sensor networks. Apart from the experimental findings we have conducted two different outdoor deployments for which large data sets has been collected, containing both link and meteorological measurements.

Place, publisher, year, edition, pages
Uppsala University, 2013
Series
Information technology licentiate theses: Licentiate theses from the Department of Information Technology, ISSN 1404-5117 ; 2013-007
National Category
Computer Science Communication Systems
Research subject
Computer Science with specialization in Computer Communication
Identifiers
urn:nbn:se:uu:diva-227639 (URN)
Supervisors
Projects
WISENET
Available from: 2013-12-17 Created: 2014-06-29 Last updated: 2017-08-31Bibliographically approved

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Wennerström, HjalmarMcNamara, LiamRohner, ChristianNordén, Lars-Åke

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