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Fault-tolerant real-time communication in distributed computing systems

By: Shin, K.G.; Zheng, Q.;

1992 / IEEE / 0-8186-2875-8


This item was taken from the IEEE Periodical ' Fault-tolerant real-time communication in distributed computing systems ' An increasing number of applications require packets to be delivered reliably within prespecified delay bounds. It is shown how this can be achieved by using real-time channels that make soft reservation of network resources to ensure the timely delivery of real-time packets. Algorithms are presented for the establishment of real-time channels, and it is shown how the basic real-time channels can be enhanced to be fault tolerant using the multiple paths between a pair of communicating nodes. The contribution of the former is a tighter schedulability condition that makes more efficient use of network resources than other existing approaches, and the contribution of the latter is a significant improvement in fault tolerance over the basic real-time channel, which is inherently susceptible to component failures.<>