摘要： 分析了宽带无线系统中所承载业务的QoS需求，提出了一种用模拟业务来测试网络QoS的技术。在探讨业务特性参数提取的基础上，实现了VoIP业务在Ixia设备上的模拟过程，并用该模拟数据对Wimax设备进行了测试。同基于实际业务的网络QoS测试技术相比，该技术具有定量性、通用性、灵活性的优点。

关键词: 宽带无线系统, 服务质量, 业务模拟, Wimax

Abstract: The paper analyses QoS requirement of different services in broadband wireless system. The method of service-simulation is proposed to test QoS of a network. Based on detail discussion on the service-characteristic parameters, the VoIP traffic pattern is simulated by Ixia testing device. A real test on Wimax device is carried out using the simulated traffic. Compared to the method based on real-service, this method has such advantages: quantity measurement, generality, flexibility.

Key words: Broadband wireless system(BWS), Quality of service, Service-simulation, Wiamx