基于地理位置的Ad Hoc网络路由协议研究

【作者】 刘卫彪；

【导师】 张修如；

【作者基本信息】 中南大学 ， 通信与信息系统， 2008， 硕士

【摘要】 随着对Ad Hoc网络研究的不断深入,为了摆脱路由协议对拓扑结构的依赖,提出了一种基于地理位置的路由机制。Ad Hoc网络对高速移动的网络环境的适应成为了当前研究的热点。目前的基于地理位置的位置管理系统要依靠部分或者全部网络节点,很难适应高速移动的网络环境;而贪婪策略和区域受限的包转发算法都要依赖于地理位置信息的良好获得;也没有对节点的移动模型进行建模分析,没有充分考虑节点的移动特性。针对这些不足,在现有基于地理位置的移动Ad Hoc网络路由协议的研究基础上,论文提出了一种集中式的位置管理系统,对高速移动状态下的无线Ad Hoc网络节点的位置信息和移动模型进行了深入研究,通过移动模型建模提出了一种新的加权方向受限转发策略。集中式的位置管理系统使节点地理位置信息的获得更加有效,同时通用加权方向受限包转发算法考虑了节点移动性和链路移动性两方面因素,保证了路由的节能和稳定,使得协议更具稳定和健壮。经在OPNET中对该算法进行仿真,确定了在不同网络拓扑环境下路由性能达到最优时的参数。仿真验证了集中式位置管理服务模式的可行性,表明CSAMP协议是一种有效的健壮的协议,适应于高密度和高速移动的网络环境。更多还原

【Abstract】 The research of Ad Hoc network becomes more and more deeply gradually. Domestic and overseas scholars put forward a kind of address based routing protocol so as to break away from the infection of net topology . That how to make it be fit to the highly mobile net circumstance becomes a hotspot now.The existing address based routing protocols for Ad Hoc network have two import problems: strategy of address information getting and data transmitting .But the existing strategy of address information getting depend on partial or all nodes ,they cann’t adapt well to High-mobile network ;The greedy and zone limiting must depend on favorable address informations .And they did not consider the node’s mobile performance because they did not analyse the node’s mobile model. Aimming at these shortages ,based on the research of the exisiting routing protocols .This dissertation brings forward a concentricity address serve mode .And work over the node’s address information and the mobile model penetrability, finally brings forward a Power assistant direction limiting transmitting strategy .The concentricity address serve mode makes address information services simplify .The strategy of transmitting makes this protocol more steady and powerful as it thinks over node’s mobile velocity and direction adequately.At last we make use of computer emulate tools to confirm the parameters when the performance of this protocol reaching optimization .And approve the validity and stability of the concentricity address serve mode and this protocol.更多还原