Title :
Simulation of parallel redundant WLAN with OPNET
Author :
Rentschler, Markus ; Mady, Omar A. ; Kassis, Marco T. ; Halawa, Hassan H. ; Refaat, Tarek K. ; Daoud, Ramez M. ; Amer, Hassanein H. ; ElSayed, Hany M.
Author_Institution :
Hirschmann Autom. & Control GmbH, Baden-Wuerttemberg, Germany
Abstract :
Applying multiple redundant and diverse communication channels is an established method to achieve an improved overall communication channel. When applied for packet-based data transmission over channels with strongly nondeterministic behaviour due to environmental influence, such as Wireless Communications, timing performance can be greatly improved by this approach. The central element in such a system is the so called “Combiner” on the receiving side. In this work, a new specific type named “Timing Combiner” is described. The Parallel Redundancy Protocol (PRP) according to IEC 62439-3 realizes such a Timing Combiner on the Ethernet level. In this work, an OPNET simulation model is created and analysed for its performance characteristics. Also a quantitative analysis of the effect of different interference models in an industrial environment is presented.
Keywords :
parallel processing; protocols; wireless LAN; Ethernet; OPNET; PRP; diverse communication channels; packet based data transmission; parallel redundancy protocol; parallel redundant WLAN; timing combiner; wireless communications; Delays; Diversity reception; Jitter; Noise; Protocols; Redundancy;
Conference_Titel :
Emerging Technologies & Factory Automation (ETFA), 2013 IEEE 18th Conference on
Conference_Location :
Cagliari
Print_ISBN :
978-1-4799-0862-2
DOI :
10.1109/ETFA.2013.6648021