适用于Pbit/s光分组交换网络的丢包率下限模型

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[摘要] 文章针对通过优化路由来改善光分组交换网络性能这一方法进行了深入地分析。文章认为在输出光缓存结构下可以计算出网络丢包率下限的理论模型，通过将该模型得到的丢包率下限与在已有路由算法下由仿真得到的丢包率进行比较，能够预测出最佳路由算法下的丢包率，从而进一步预测通过优化路由所能获得的最大性能提升。

[关键词] Pbit/s交换；光分组交换；光缓存

[Abstract] In this paper, we analyze the improvement in performance brought about by optimized routing in optical packet-switched (OPS) networks. The theoretical model for the lower bound on the packet loss rate can be calculated in the buffer structure, and the packet loss rate of the optimal routing algorithm can be predicted by comparing the theoretical lower bound on the packet loss rate with the packet loss rate under existing routing algorithms. In this way, the maximum performance of an OPS with optimized routing routing can be predicted.

[Keywords] Pbit/s switching; optical packet switching; optical buffer