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Fault tolerant real-time connection admission control for mission critical applications over ATM-based networks

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3 Author(s)
B. Devalla ; IP & ATM Network Planning, Nortel Networks Syst. Eng., Richardson, TX, USA ; R. Bettati ; W. Zhao

We present methods to provide fault-tolerant real-time communication over ATM networks. Specifically, we are concerned with messages that have to be delivered by their deadlines even in the presence of faults. Connection-oriented communications service is well-suited for mission critical applications that demand delay guarantees. A critical part of connection oriented communication is the design of a connection admission control algorithm. We develop innovative fault tolerant real-time connection admission control algorithms that use an integrated spatial and temporal redundancy scheme and provide algorithms that determine the appropriate redundancy parameters. To aid delay analysis, we first develop a generic traffic model to describe the traffic of individual connections in the network. We then develop an analytical method to derive the end-to-end delay bounds taking into account the impact of faults

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Real-Time Computing Systems and Applications, 1999. RTCSA '99. Sixth International Conference on

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