摘要： 区分服务(DiffServ)模型中不同队列调度算法对网络性能有不同的影响。该文介绍了DiffServ实现模型，分析比较了目前4种典型队列调度算法的基本原理及性能特点。基于OPNET Modeler构建了采用不同调度算法的DiffServ仿真实现模型，通过对各仿真结果的比较研究，进一步验证了几种算法各自的优劣特性。

关键词: 区分服务模型, 服务质量, 调度算法, 网络仿真

Abstract: In DiffServ QoS framework, queuing algorithm is the key factor that impacts the network performance. This paper introduces the DiffServ realization model, analyzes the basic principle of four main queuing algorithms and compares their characteristics, constructes the DiffServ simulation realization model with different queuing algorithms, validates and compares the different characteristics of queuing algorithms through the simulation.

Key words: DiffServ model, Quality of Service(QoS), queuing algorithm, network simulation

中图分类号: 

• TP393