Publications:Meeting reliability and real-time demands in wireless industrial communication
From CERES
| Title | Meeting reliability and real-time demands in wireless industrial communication |
|---|---|
| Author | Magnus Jonsson and Kristina Kunert |
| Year | 2008 |
| PublicationType | Conference Paper |
| Journal | |
| HostPublication | IEEE Symposium on Emerging Technologies and Factory Automation, ETFA |
| DOI | http://dx.doi.org/10.1109/ETFA.2008.4638500 |
| Conference | 13th IEEE International Conference on Emerging Technologies and Factory Automation, 15-18 September 2008, Hamburg, Germany |
| Diva url | http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:239396 |
| Abstract | Employing wireless communication in industrial applications requires methods that deal with the high fraction of packet errors common to wireless transmissions. At the same time, industrial applications have real-time demands that protocols like TCP are unable to support. This paper combines ARQ (automatic repeat request) with real-time worst-case scheduling analysis to achieve both high reliability and real-time support. One or several retransmission attempts of erroneous data packets are handled, while still not jeopardizing stated delay guarantees of other packets. We present the real-time analysis for a full-duplex link using our retransmission scheme. In simulation studies, we demonstrate a possible reduction of the message error rate by several orders of magnitude for bit error rates typically experienced in wireless communication. |
