一种基于NS2的多信道网络模型的建立和性能检测  

Construction and Performance Test of a Multi-channel Network Model Based on NS2

作　　者：果然[1] 谭学治[1] 徐贵森[1] 

机构地区：[1]哈尔滨工业大学通信技术研究所,哈尔滨150001

出　　处：《科学技术与工程》2009年第17期4950-4954,共5页Science Technology and Engineering

摘　　要：作为目前主流的网络仿真软件,NS2(Network Simulator v2)虽然具备很强大的网络仿真功能,却不支持多信道多接口模型,难以有效进行基于多信道物理层的媒体接入控制层(MAC)以及网络层等高层协议的仿真以及吞吐量和网络延迟的测试。这就给从事多信道ad hoc网络和认知无线电网络协议研究的学者和科研人员利用NS2进行仿真造成了困难。提出一种方案,对NS2的无线节点的底层模块进行修改,使之能够支持多信道多接口的物理层模型,并且能够进行高层协议的仿真和性能测试。最后将建立一个运行AODV路由协议的无线网络场景进行仿真,对该方案有效性进行验证,并与单信道网络性能进行了对比。As the most often used software for network simulation,NS2 is very powerful. On the other hand,it does not support the multi-channel and multi-interface network model, and this shortage makes the simulation of material access control layer（MAC） ＇s protocol which is built on the muhi-chan physical layer （PHL）and the capability test of throughput and delay of net layer protocol very troublesome. A method to modify the basic units of the wireless node is provided and it is endbled to support the PHL model with multi-channel and multi-interface. In this way researchers can use NS2 to simulate and test their own high-layer protocols. Finally a scheme is created with several wireless nodes which employ AODV as their routing protocol, the effect of the modification is tested, and the performance of original wireless network and the modified one are contrasted.

关 键 词：NS2 多信道多接口扩展 AODV路由协议 

分 类 号：TN915.01[电子电信—通信与信息系统]