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光突发交换是面向下一代互联网的光交换模式 .讨论了异步光突发交换系统的交换控制策略以及相应光缓存的优化配置策略 .除了传统预约模式的交换策略 ,还研究了非预约和改进型预约模式 ,它们的性能评估由计算机仿真给出 .结果表明 :在条件相当情况下 ,改进型预约模式具有最低的丢包率 .同时光缓存的配置对上述几类交换控制策略的性能都有很大影响 ,仿真结果指出 :光缓存的粒度对系统性能具有重要影响 ,所讨论的几类交换模式都存在最佳时延粒度 ,研究结果对光交换矩阵的设计有指导意义 .
Optical burst switching is the next-generation Internet optical switching mode.Exchange optical burst switching system switching control strategy and the corresponding optical cache optimization configuration strategy is discussed.In addition to the traditional reservation mode switching strategy, also studied the non-reservation and improvement Type reservation mode and their performance evaluation is given by computer simulation.The results show that the improved reservation mode has the lowest packet loss rate under the condition of the same condition.At the same time the configuration of optical buffer has the performance of the above exchange control strategies The simulation results show that the granularity of optical caching has an important impact on the system performance, and the optimal delay granularity exists in several types of exchange modes discussed. The research results are instructive for the design of optical switching matrix.