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A Delay-Bounded MAC Protocolfor Mission- and Time-Critical Applicationsin Industrial Wireless Sensor Networks
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology. (CSN)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology. (CSN)ORCID iD: 0000-0003-0873-7827
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology. (CSN)
2018 (English)In: IEEE Sensors Journal, ISSN 1530-437X, E-ISSN 1558-1748, Vol. PP, no 99Article in journal (Refereed) Published
Abstract [en]

Industrial Wireless Sensor Networks (IWSNs) designedfor mission- and time-critical applications require timelyand deterministic data delivery within stringent deadline bounds.Exceeding delay limits for such applications can lead to system malfunction or ultimately dangerous situations that can threaten human safety. In this paper, we propose SS-MAC, an efficient slot stealing MAC protocol to guarantee predictable and timely channel access for time-critical data in IWSNs. In the proposed SS-MAC, aperiodic time-critical traffic opportunistically steals time slots assigned to periodic non-critical traffic. Additionally, a dynamic deadline-based scheduling is introduced to provide guaranteed channel access in emergency and event-based situations where multiple sensor nodes are triggered simultaneously to transmit time-critical data to the controller. The proposed protocol is evaluated mathematically to provide the worst-case delay bound for the time-critical traffic. Performance comparisons are carried out between the proposed SS-MAC and WirelessHARTstandard and they show that, for the time-critical traffic, theproposed SS-MAC can achieve, at least, a reduction of almost 30% in the worst-case delay with a significant channel utilization efficiency.

Place, publisher, year, edition, pages
2018. Vol. PP, no 99
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-32771DOI: 10.1109/JSEN.2018.2793946OAI: oai:DiVA.org:miun-32771DiVA: diva2:1178735
Available from: 2018-01-30 Created: 2018-01-30 Last updated: 2018-01-30Bibliographically approved

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Gidlund, MikaelÖsterberg, Patrik

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CiteExportLink to record
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