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Soft real-time traffic communication in loaded Wireless Mesh Networks
Universidad de Zaragoza, Zaragoza, Spain .
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0001-5590-0784
Universidad de Zaragoza, Zaragoza, Spain .
University of Porto, Porto, Portugal.
2016 (Engelska)Ingår i: IEEE International Workshop on Factory Communication Systems - Proceedings, WFCS, 2016, artikel-id Article number 7496503Konferensbidrag, Publicerat paper (Refereegranskat)
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Abstract [en]

Industrial applications have been shifting towards wireless multi-hop networks in recent years due to their lower cost of deployment and reconfiguration compared with their wired counterparts. These wireless networks usually must support real-time communication to meet the application requirements. For this reason, Wireless Mesh Networks (WMNs) are potential candidates for industrial applications as they support a fixed infrastructure of static nodes for relaying packets. To meet the application demands, we modify the wireless chain network protocol (WICKPro) to support soft real-time traffic in WMNs with chain topologies over IEEE 802.11. We employ tele-operation of mobile robots as our case study, and perform extensive simulation and laboratory experiments. We show that the data delivery ratio is increased up to 42% in a scenario with 7 nodes, when the maximum end-to-end delay tolerated by the application is doubled. This is particularly suited to soft real-time applications that can trade longer delays by higher reliability. Moreover, when compared with a distributed priority-based token-passing protocol (RT-WMP), the lower overhead of WICKPro allows, in an error-free scenario, obtaining a throughput improvement of 33.42% on average.

Ort, förlag, år, upplaga, sidor
2016. artikel-id Article number 7496503
Nyckelord [en]
chain topology, cyclic scheduling, IEEE 802.11, soft real-time, token passing, Wireless mesh networks, Chains, Mesh generation, Network protocols, Standards, Topology, Wireless mesh networks (WMN), Wireless networks, IEEE 802.11s, Soft real time, MESH networking
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URN: urn:nbn:se:mdh:diva-32531DOI: 10.1109/WFCS.2016.7496503ISI: 000382857300009Scopus ID: 2-s2.0-84982812542ISBN: 9781509023394 (tryckt)OAI: oai:DiVA.org:mdh-32531DiVA, id: diva2:953621
Konferens
12th IEEE World Conference on Factory Communication Systems, WFCS 2016, 3 May 2016 through 6 May 2016
Tillgänglig från: 2016-08-18 Skapad: 2016-08-18 Senast uppdaterad: 2017-09-15Bibliografiskt granskad

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