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Amazon.com, Inc., “V.O.D Streaming Speed,” 2011. http://www.amazon.com/gp/help/customer/display.html?nodeId=3748&#speed

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• TITLE: Ethernet Implementation of Fault Tolerant Train Network for Entertainment and Mixed Control Traffic

  AUTHORS: Tarek K. Refaat, Mai Ibrahim, Ramez M. Daoud, Hassanein H. Amer

  KEYWORDS: Ethernet; Networked Control Systems; Fault-tolerance; Railways; Intelligent Transportation Systems; WiFi

  JOURNAL NAME: Journal of Transportation Technologies, Vol.3 No.1, January 29, 2013

  ABSTRACT: This paper studies the integration of the control system and entertainment on board of train wagons. Both the control and entertainment loads are implemented on top of Gigabit Ethernet, each with a dedicated controller/server. The control load has mixed sampling periods. It is proven that this system can tolerate the failure of one controller in one wagon. In a two wagon scenario, fault tolerance at the controller level is studied, and simulation results show that the system can tolerate the failure of 3 controllers. The system is successful in meeting the packet end-to-end delay with zero packet loss in all OPNET simulated scenarios. The maximum permissible entertainment load is determined for the fault tolerant scenarios.