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提出了模糊路由选择（ＱｏＳ－ＦＲ）模型，定义一组隶属函数来反映对某个度量值的ＱｏＳ要求，基于模糊规则推理出每条路径的模糊代价．ＱｏＳ－ＦＲ在全网范围内均衡负载，从而减小了链路上拥塞的概率．仿真结果表明，在保证ＱｏＳ的前提下，该方法可获得更高的链路利用率和更大的吞吐量．
A QoS-FR model is proposed. A set of membership functions is defined to reflect the QoS requirements of a metric. The fuzzy cost of each path is deduced based on fuzzy rules. QoS-FR balances the load across the entire network, reducing the probability of congestion on the link. The simulation results show that this method can achieve higher link utilization and greater throughput under the precondition of guaranteeing QoS.