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提出了一种描述计算机互联网络数据包传输的简单元胞自动机模型 ,并研究了沿着网络固定路径中路由节点数据包队列长度和传输时间的统计特性 .计算机仿真结果表明 ,根据数据包输入速率和路由节点平均最大传输速率的不同 ,系统存在自由流和拥塞两种相态 .在自由流状态 ,路由节点数据包排队长度和传输时间都呈现幂律特性 ;在拥塞状态 ,路由节点数据包排队长度呈现白噪声特征 ,而传输时间在低频段为幂律、高频段为白噪声特征 .仿真结果和已有文献和经验数据得到的结论一致 .
A simple Cellular Automata model is presented to describe the packet transmission in computer Internet and the statistical characteristics of packet queue length and transmission time of routing nodes along a fixed path in a network are studied.The simulation results show that according to the data packet input In the state of free flow, the queuing length and transmission time of the routing nodes have power-law characteristics. In the congestion state, the routing node data packets The queue length shows white noise characteristics, while the transmission time is power law in the low band and white noise in the high band.The simulation results are consistent with the conclusions obtained from previous literature and empirical data.