移动自组网抗毁性研究与仿真

发布时间：2018-04-18 19:54

本文选题：移动自组网 + 抗毁性　；参考：《南京大学》2017年硕士论文

【摘要】：移动自组网是一种不需要依赖任何固定网络设备作为接入点的、无中心的、自组织的、分布式的无线网络。网络的拓扑结构随着节点的移动而实时变化,网络中的移动节点在功能上既是主机又是路由器。移动自组网在很多领域都有着巨大的应用前景。但是,其网络节点的脆弱性和无线信道的安全问题,给移动自组网的设计提出了更高的要求和挑战。为了保证移动自组网的可靠性,网络的抗毁性研究得到了许多研究人员的关注。网络抗毁性研究中的其中一个研究方向就是关键节点问题。本文使用图论中的中心性度量寻找拓扑中的关键节点,拓扑中节点的移动服从高斯—马尔科夫移动模型和随机路点移动模型,并使用流量鲁棒性度量来衡量拓扑的连通性,而从反映不同度量关键节点对拓扑连通性的影响。本文还使用NS-3网络仿真器搭建了一个移动自组网仿真平台。仿真平台使用数据包分发率衡量移动自组网的网络连通性,研究了移动自组网使用AODV协议、DSDV协议和OLSR协议三个不同的路由协议的情况下,网络关键节点对移动自组网网络连通性的影响。对移动自组网的网络设计和抗毁性的提高有一定的指导意义。
[Abstract]:Mobile ad hoc networks are wireless networks that do not rely on any fixed network devices as access points, which are non-central, self-organized, and distributed.The topology of the network changes with the movement of nodes in real time. The mobile nodes in the network are both hosts and routers.Mobile ad hoc networks have great application prospects in many fields.However, the vulnerability of network nodes and the security of wireless channels present higher requirements and challenges to the design of ad hoc networks.In order to ensure the reliability of Manet, many researchers pay attention to the research of network survivability.One of the research directions of network survivability is the key node problem.In this paper, we use the centrality metric in graph theory to find the key nodes in the topology, the mobility of nodes in the topology is from Gao Si-Markov moving model and random path point moving model, and the traffic robustness measure is used to measure the connectivity of the topology.The influence of key nodes on topology connectivity is reflected from different measurements.A mobile ad hoc network simulation platform using NS-3 network simulator is also presented in this paper.The simulation platform uses packet distribution rate to measure the network connectivity of mobile ad hoc networks. In this paper, three different routing protocols, AODV protocol and OLSR protocol, are studied in mobile ad hoc networks.The influence of network key nodes on the connectivity of mobile ad hoc networks.It has certain guiding significance for the network design and the improvement of survivability of mobile ad hoc network.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

【相似文献】