We develop a performance model for an optical burst switch employing Fiber Delay Lines (FDLs) to enhance system performance. An M/M/k queueing model with balking is derived to predict the system behavior for both classless and prioritized traffic. Simple closed form expressions are obtained for the burst loss probability of classless traffic. Using a conservation relation, the balking model is extended to model the performance of prioritized traffic classes. A discrete event-driven simulator is constructed to verify the accuracy of the proposed models. Numerical results show that the classless model fits simulation results very well. The model for prioritized traffic provides an accurate fit for the performance of the highest traffic class and lower bounds for the other traffic classes that are tighter than earlier known results.
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机译:我们开发了采用光纤延迟线(FDL)的光突发开关的性能模型,以提高系统性能。导出具有BALKING的M / M / K排队模型,以预测无类和优先顺序流量的系统行为。为无类流量的突发损耗概率获得了简单的闭合表达式。使用保护关系,Balking模型扩展以模拟优先级流量类的性能。构建一个离散的事件驱动的模拟器以验证所提出的模型的准确性。数值结果表明,无类模型非常适合仿真结果。优先级流量的模型为最高流量类的性能和低于早期已知结果而更紧密的流量类的性能提供了准确的拟合。
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