NS2, with advanced design ideas, is a free-of-charge and open-source multiprotocol network simulation software. NS2 is a very important tool in the area of network simulation.
基于先进设计思想的NS2，是一个免费的、开源的多协议网络仿真软件，在网络仿真领域中占有十分重要的地位。
Authors use the mainstream network simulation tool NS2 in teaching network, set up a simulation model to discuss the network topology and the method of simulation parameters selection.
该文使用主流网络仿真工具NS 2对教学实验网络建立了仿真模型，讨论了网络拓扑结构和仿真参数的选取方法。
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 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。
The simulation on NS2 shows that the average throughput is improved, and the packet loss rate is decreased. With the JRED algorithm, the stableness and reliability of network are enhanced.
利用NS 2对改进的算法进行仿真，结果表明，JRED算法提高了平均吞吐量，降低了丢包概率，增强了网络稳定性和可靠性。
The algorithm is simulated in NS2, and the results demonstrate that the method can improve the utilization ratio of network resources, and fall the drop rate of packets.
用提出的动态带宽分配算法，在NS2环境下进行了仿真。 仿真结果表明：该分配方法提高了网络资源利用率，降低丢包率。
We use NS2 as the simulation platform to verify the research mentioned above, the simulation results show that the utilization of load in RED can improve the stability of RED and reduce its drop rate;
本文使用NS2作为网络仿真实验平台对上述研究进行了验证和分析，实验结果表明：结合负载有助于提高RED的稳定性，降低丢包率；
Besides, with the tool of network simulation (NS2), the system was analyzed and tested. Last but not least, the thesis summarizes the project and refers to the trendy.
论文还利用网络仿真工具NS 2对系统进行了分析和测试，最后论文对未来的工作做了总结和相关的展望。
The NS2 simulation results show that the improved algorithm can save the energy of nodes and reduce routing overhead and prolong the maximal living time of network.
NS2仿真结果表明，改进后的算法能够节约节点剩余能量，降低路由开销，延长网络的最大生存时间。
Then we used the NS2 software to emulate the algorithm and the results show that it can provide a better average end-to-end delay and quality of service (QoS).
最后用ns2进行仿真，结果表明该算法能够提供较好的端到端延迟，从而更好的保证了网络服务质量。
At last, Shared key is adopted to maintain the security of message transmitting. Finally, performance evaluation of routing algorithm and secure mechanism is showed in NS2 under different topologies.
最后，使用网络仿真工具ns2在多种网络场景下分别对提出的路由算法和安全机制进行了性能评估。
Current status of underwater acoustic networks and the networking techniques are intro-duced. A data link layer protocol for shallow water acoustic networks is proposed and simulated on NS2.
简要介绍了水声通信网的研究现状和水声网络组网方式，提出一种比较适合于浅海的水声通信网数据链路层协议，并在NS2仿真器上进行了仿真研究。
With the help of simulator tool — NS2, simulation has verify the performance of this algorithm, has improved delay and throughput of the wireless LAN, reach better performance to require.
在NS2仿真工具的帮助下，模拟验证了该算法的性能，改善了无线网络的延迟与吞吐量，达到更好的性能要求。
With the help of simulator tool — NS2, simulation has verify the performance of this algorithm, has improved delay and throughput of the wireless LAN, reach better performance to require.
在NS2仿真工具的帮助下，模拟验证了该算法的性能，改善了无线网络的延迟与吞吐量，达到更好的性能要求。
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