移动Ad Hoc网络论文:移动Ad Hoc网络基于稳定域的节能路由算法.doc
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1、移动Ad Hoc网络论文:移动Ad Hoc网络基于稳定域的节能路由算法【中文摘要】移动Ad Hoc网络是一种不依赖于中心基础设施,由一些移动终端自组织形成的无线多跳移动网络,通常在一些特殊的环境里提供临时通信便利,如战场、灾区、临时会议等一些不方便布设有线网络的地点。随着技术的发展和进步,移动Ad Hoc网络的应用已越来越广泛。移动Ad Hoc网络中的每个节点都具有路由器和主机两种功能,有较强的灵活性。相比于其他通信网络,移动Ad Hoc网络具有动态变化的网络拓扑结构、有限的无线传输带宽、有限的物理安全、移动终端的能量限制等特点。路由技术是影响网络整体性能的最重要因素之一,是移动Ad Hoc网
2、络的技术关键所在。在移动Ad Hoc网络中,移动节点由电量有限的电池供电,因此减少能量消耗,延长节点生存时间,延迟网络分区,成为评价路由协议性能优劣的一个重要指标。本文首先概述了移动Ad Hoc网络的定义、特点、应用及其关键技术和主要研究问题,其次分析了移动Ad Hoc网络的路由设计方面的问题,对现有移动Ad Hoc网络的路由协议进行了分类介绍,然后归纳总结了现有移动Ad Hoc网络的各种节能机制和功率控制策略。基于现有的能量有效路由算法,提出了一种基于稳定域的节能路由策略,稳定域通过距离门限值划分,并根据节点间距离计算链路有效性,以路径有效性为选路度量,分GMM算法和CMM算法进行分析比较。
3、GMM算法以最大最小链路有效性选路,CMM算法则在相同路径有效性条件下,以最短距离(最小跳数)选路。现有路由协议中的网络节点通常以最大功率通信,由于节点能量消耗过快,其生存时间将会缩短。本文利用MAC层功率控制机制,使节点根据下一跳节点的位置自动调整发射功率,从而达到节能的。最后,本文利用Matlab仿真软件从路由跳数、路径能量消耗和网络生存时间等方面,对本文所提算法和DSR进行了比较。仿真结果表明该算法与DSR相比能有效减少网络能量消耗,从而延长网络生存时间,是一种简单有效的算法,且在节点密度较高的情况下CMM算法更优于GMM算法。【英文摘要】Mobile ad hoc network is
4、 a self organized and multi-hop wireless network that consists of some mobile terminates and frees from any central infrastructure. It usually offers temporary communicate facilities to some special environment such as battlefields, disaster areas and provisional meetings which are inconvenient to l
5、ayout traditional network. With the development and progress in technology, the use of mobile ad hoc network is becoming more and more popular. Each node in mobile ad hoc network is of strong flexibility and can serve as router or host. Compared with other communication networks, mobile ad hoc netwo
6、rk has many features like dynamic network topology, limited wireless transmission bandwidth and physical safety, and constrained node energy and so on. The routing technology is where the key of mobile ad hoc network stands and it is one of the most important factors that affect the performance of t
7、he whole network. The nodes in mobile ad hoc network are powered by batteries which have limited power, so it becomes a significant index to judge whether a routing protocol is good or not to reduce energy consumption, prolong nodeslife time and delay network partition.Firstly, it summarizes the def
8、inition, features, applications, key technologies and the main research problems of ad hoc network. Secondly, it analyzes the problems exist in the field of routing design and introduces the current routing protocols of mobile ad hoc network in different kinds. Thirdly, it concludes several existing
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