【摘要】 提出了基于Fuzzy综合评判的无线/有线融合网络中2种丢包原因区分算法——联合平均丢包率和包对探测帧的相对单向传输时延(ROD),构造不同网络环境下的动态权重分布,从而采用Fuzzy综合评判模型区分因无线误码造成的丢包和网络拥塞造成的丢包.该算法不是简单地设置某一参数在不同丢包模式下的阈值,而是在变化的网络环境下,构建不同参数的动态权重,按照多因素综合评判原则以适应变化的网络环境.仿真显示,该算法在不同的网络条件下,具有更好的网络适应性.更多还原

【Abstract】 A Fuzzy comprehensive evaluation based loss differentiation algorithm for wired/wireless hybrid network is brought out,it takes both average packet loss rate(PLR) and probe packet relative one-way delay(ROD)in loss pair as loss differentiation parameters,arranges them dynamic weight values in different network environments,and then distinguishes the wireless error loss from the congestion loss according to the fuzzy comprehensive evaluation principle.Unlike most of the current loss discrimination algorithms,the proposed algorithm does not take one loss differentiation parameter and simply set its threshold of one loss pattern,but takes different parameters and arrange them dynamic weight values in different network conditions,and then uses fuzzy comprehensive evaluation model for distinction.Simulation demonstrated that the algorithm has better network adaptability.更多还原