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根据卫星光交换网络的高带宽、低丢包率和高链路利用率应用需求,结合现有的地面光交换组装算法,提出了一种新的基于混合门限和轮询方式的星载光交换组装算法。算法首先按照优先级缓存分组,再按照混合门限和轮询方式组装IP分组,减少突发数据包的空闲率,提高了链路利用率。理论分析与仿真证明该算法计算复杂度与轮询方式相同,突发数据包空闲率低于10-4,丢包率在负载为0.5时平均达到10-6,适用于星载光交换系统。
According to the requirements of high bandwidth, low packet loss rate and high link utilization of satellite optical switching network, a new optical switching based on hybrid threshold and polling method is proposed in combination with the existing terrestrial optical switching assembly algorithm Assembly algorithm. The algorithm first caches packets according to priority, and then compresses IP packets according to the hybrid threshold and polling method to reduce the idle rate of burst data packets and improve the utilization of the link. The theoretical analysis and simulation show that the algorithm has the same computational complexity and polling pattern. The burst rate of burst packets is less than 10-4, and the packet loss rate is 10-6 when the load is 0.5. It is suitable for the space optical switching system.