建立在MANET上的并行路由传输编码原理与方法研究

发布时间：2018-03-06 17:19

本文选题：移动无线自组网　切入点：并行路由　出处：《电子科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：移动无线自组网(Mobile Ad-hoc Wireless Network,MANET)是由一组携带无线通讯设备的运动终端构成的一个多跳的临时自治专网。由于MANET不依赖任何基础设施,没有控制中心,抗毁性强,适用于网络布线困难的环境。基于这些优势,MANET在军用领域发挥着重要作用,在民用领域也有十分多的运用场景。MANET使用无线信道,其节点具备运动性且可以自由接入退出网络,由此导致网络拓扑动态变化,网络中点对点的通信链路可靠性不高。目前MANET上的多路由传输,在一次会话过程中只使用了某条路由作为传输路由,在某个时间观测点上,其传输路由是单一路由。为此,本文从路由协议着手,进行以提高端到端的数据传输可靠性为目标的并行路由传输研究。本文首先归纳MANET上的各种路由协议,解析按需距离矢量路由(Ad-hoc On-demand Distance Vector Routing,AODV)和按需距离矢量多路由协议(Ad-hoc On-demand Multipath Distance Vector Routing,AOMDV)协议的工作机制。AOMDV路由协议在传输数据时只使用一条主路由,不会维护替代路由,选路的标准是最小跳数。本文以AOMDV路由协议为基础,建立维护多条节点不相交可用路由,且能够不间断地切换所使用的多条节点不相交路由。接续通过介绍门限系统引出一类优良的删除码——RS码,以RS码为例介绍如何利用删除码的纠删能力来设计N条路由中的任意K条路由不中断情况下的数据编码和恢复。最后把数据编码和恢复建立在多条独立路由之上,在MANET中实现端到端的并行路由传输。文中使用的仿真工具为网络模拟器3(Network Simulator Version 3,NS-3)。由于NS-3没有提供AOMDV路由协议模块,因此需要先将NS-3中已有的AODV路由协议模块进行拓展得到一个新的多路由协议模块,以此实现多路由的建立和维护,并配合此模块进行数据的编码和恢复,实现并行路由传输。本文将对新添加的多路由协议模块进行测试,以验证其能进行多路由建立和维护,再对并行路由传输进行仿真验证。结果显示,MANET中的并行路由传输能够在一定条件下提升数据包传输的可靠性。
[Abstract]:Mobile Ad-hoc Wireless Network (Manet) is a multi-hop temporary autonomous private network consisting of a group of mobile terminals carrying wireless communication devices. Because MANET does not rely on any infrastructure, there is no control center, so it is highly invulnerable. Based on these advantages, Manet plays an important role in the military field. There are also a lot of applications in the civilian field. Manet uses wireless channels, and its nodes are mobile and can freely access and exit the network. As a result of the dynamic change of network topology, the reliability of point-to-point communication links in the network is not high. At present, the multi-route transmission on MANET only uses one route as the transmission route during a session, and at a certain time observation point, The transmission route is a single route. Therefore, this paper starts with the routing protocol, and studies the parallel routing transmission aiming at improving the reliability of end-to-end data transmission. Firstly, this paper summarizes the various routing protocols on MANET. Analyzing the working Mechanism of Ad-hoc On-demand Distance Vector routing Protocol and Ad-hoc On-demand Multipath Distance Vector routing AOMDV Protocol .AOMDV routing Protocol uses only one main route when transmitting data, and does not maintain alternative routes. The standard of routing is the minimum number of hops. Based on the AOMDV routing protocol, this paper establishes and maintains multiple nodes disintersecting available routes. And the disjoint routing of many nodes used can be switched without interruption. By introducing the threshold system, a kind of excellent delete code, RS code, can be obtained. Taking RS code as an example, this paper introduces how to use erasure ability of deletion code to design data encoding and recovery of any K route in N route without interruption. Finally, data coding and recovery are built on multiple independent routes. End-to-end parallel routing transmission is realized in MANET. The simulation tool used in this paper is Network Simulator 3Network Simulator Version 3NS-3. Because NS-3 does not provide AOMDV routing protocol module, Therefore, it is necessary to extend the existing AODV routing protocol module in NS-3 to obtain a new multi-routing protocol module, so as to realize the establishment and maintenance of multi-routing, and to code and restore the data with this module. This paper will test the newly added multi-routing protocol module to verify that it can be established and maintained. The simulation results show that the parallel routing transmission in Manet can improve the reliability of packet transmission under certain conditions.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

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