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通信网络需要提供满足用户需求的QoS(qualityofservice),这就需要业务流模型能准确地捕获实际业务流的统计特征。业务流模型在网络的流量控制及性能分析中都起至关重要的作用。随着网络业务类型不断增加,实际网络中业务流特性越来越复杂,表现为突发性、长相关性或自相似性等。这使得业务流建模方法的研究得到不断发展。文中就当前网络的业务流特性,分析了现有的业务流模型,并指出了这些建模方法的特点。
Communication network needs to provide QoS (qualityofservice) to meet the needs of users. This requires that traffic model accurately capture the statistical characteristics of the actual traffic. The business flow model plays a crucial role in the traffic control and performance analysis of the network. As the types of network services continue to increase, the characteristics of service flows in an actual network become more and more complex, showing suddenness, long correlation, or self-similarity. This makes the research of business flow modeling method develop continuously. The current business flow characteristics of the network, the analysis of the existing business flow model, and pointed out the characteristics of these modeling methods.