动态网络的仿真系统研制  

Design & Implementation Concerning the Simulation System of Dynamic Networks

作　　者：颜昕[1] 李腊元[1] 

机构地区：[1]武汉理工大学计算机科学与技术学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2006年第3期405-408,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目(批准号:60172035;90304018);湖北省自然科学基金项目资助(批准号:2000J154)

摘　　要：网络仿真是网络研究的重要方法和手段,现有的网络仿真系统在路由仿真方面都存在一定的局限性,不能很好地实现对真实的网络动态及非精确状态信息的模拟.为此,对N S2的状态更新模型作了修改,采用了带三个更新元素的混合更新模型,并加入了新的流量发生器,同时对其链路对象进行扩展,使之具有检测和控制Q oS的功能.设计出一套基于N S2并能对网络动态和非精确状态信息进行有效模拟的网络仿真软件,提供了一种研究网络动态与Q oS路由的工具.Network simulation is an important approach to networking research. However, there exist some limitations to the simulations on network routing in current netwo rk simulation systems, in that they can＇t implement the simulations of the real network dynamics and the imprecise state information efficiently. Therefore, we modify the state update model of NS2 by using a triple hybrid update model to take place of it, and add several new traffic generators to the traffic model of NS2. Meanwhile, we extend the link object of NS2 so that it＇s able to detect and control QoS metrics on it. Eventually, a set of network simulation software based on NS2 and be able to simulate efficiently the network dynamics and the imprecise state information is designed, which provides a solution to the researches on network dynamics and QoS routing.

关 键 词：仿真 网络动态 非精确状态 QOS路由 拓扑 流量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]