传统的服务质量(QoS)路由假设网络节点拥有精确的状态信息,这与实际网络环境并不相符,因此会严重影响算法的性能,基于不精确状态信息的QoS路由技术应运而生。首先论述产生不精确状态信息的各种原因,然后给出了多种解决方案,接着简要描述了迄今为止主要的基于不精确状态信息的QoS路由算法,最后对这些算法进行分析和比较,指出各自的利弊和适用环境。 Traditional QoS routing assumes that network nodes have accurate state information, which is not in accordance with the actual network environment. Therefore, the performance of the algorithm will be seriously affected. QoS routing technology based on inaccurate state information has emerged. First of all, we discuss various reasons for producing inaccurate state information, and then give a variety of solutions. Then we briefly describe the main QoS routing algorithms based on inaccurate state information so far. Finally, we analyze and compare these algorithms, The pros and cons and the applicable environment.