基于DWT—FARIMA仿真预测的网络拥塞预警与协议优化研究

RESEARCH OF NETWORK CONGESTION CAUTION AND PROTOCOL OPTIMIZATION BASED ON DWT -FARIMA SIMULATING PREDICTION

根据拓展仿真的原理和方法，以建立符合网络特性的流量预测模型为目标，笔者提出一种基于定量统计建模方法的网络仿真平台．结合网络仿真器NS构建基于DWT和FARIMA的流量预测模型，并应用该模型的预测结果辅助主动队列管理的显式拥塞标记，采取拥塞预警的方式达到对网络协议进行优化的目的．文中给出所设计的分层组播协议FLM实现算法，并开展了关于流量行为和协议策略的仿真测试．

In analyzing model is order to monitor and predict the behavior properties of network traffic flow, a quantiative proposed,in which the DWT and FARIMA scheme based on NS2 simulator is adopted to assist the AQM＇s ECN marking strategies. The network protocol can thus be optimized with the indication of congestion caution information. Detailed algorithm of FLM designed according to the model is presented, and simulating experiments are also performed to test and demonstrate the effects of traffic analysis and protocol optimization.