在分析NS 2网络仿真软件的基础上，构建了计算机网络辅助教学平台，归纳了计算机网络课程涉及的网络协议。
Following the analysis of the software of NS2 network simulation, the aided teaching system of computer networks was designed, the network protocol in the computer networks curriculum was summarized.
在分析NS的跟踪输出格式的基础上讨论了仿真结果的处理，这对于NS软件的使用及网络协议的研究具有较强的实用价值。
Finally, analyze the mechanism of trace and discuss how to process the simulating results. The paper is quite useful for how to use NS and network protocol research.
文中运用NS网络仿真软件搭建了完整的UWB网络环境，实现了一种融合物理层编码技术的MAC协议，并与几种传统的MAC协议进行了仿真分析比较。
NS was used to establish UWB network model and implement a MAC protocol combining the coding technology of the physical layer. It was compared with several traditional MAC protocols.
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