NS2中异构网络的QoS监测模块的扩展

异构网络中的QoS监测功能对进行端到端QoS控制、接纳控制以及垂直切换判决等有着重要影响,但是作为广泛应用的网络模拟器,NS2对QoS监测功能方面的支持几乎是空白,需要进行深入研究与扩展。在分析QoS监测功能的基础上,提出了一种QoS监测模型,着重设计与实现了在NS2中进行QoS监测的功能模块,并把监测模块嵌入NS2原有节点内部结构中从而扩展了NS2中的QoS监测功能,为异构网络QoS方面的研究提供了仿真基础。仿真结果表明该扩展模块能在所部署的节点上和网络中方便准确地进行QoS监测。

NS2 Extension for QoS Monitoring in Heterogeneous Networks

Quality of Service(QoS) monitoring in heterogeneous networks is important to end-to-end QoS control,admission control,vertical handover decision and so on.However,as a famous simulator,the Network Simulator 2(NS2) offers little support for it.Hence,further researches and extensions are needed.By analyzing the QoS monitoring function,a novel QoS monitoring model for NS2 was proposed,which was also implemented by embedding the QoS monitoring function into the original node structure.The extension improves the simulation basis for QoS research in heterogeneous networks.Tests have been performed to assess the behaviors of the new model introduced to the simulator and results show the accuracy and efficiency of the proposed model.