MDTN-CCN融合网络的能量约束路由研究

发布时间：2018-03-31 03:13

本文选题：移动容迟网络　切入点：内容中心网络　出处：《内蒙古大学》2017年硕士论文

【摘要】：基于卫星的传统资源共享系统由于缺乏订阅服务和操作不便等原因,导致其已经无法再满足农牧民对内容的需求。可基于互联网的内容中心网络(Content Centric Network,CCN)技术在网络基础设施不足的农牧区难以实施。值得关注的是,智能手机等移动便携式通信设备在农牧区的迅速普及以及移动容迟网络(Mobile Delay Tolerant Network,MDTN)的不断发展,使得利用移动便携式终端设备构成MDTN-CCN融合网络进行内容分发成为一种更加高效的方式。但是MDTN中移动便携式设备的能量有限,这将会影响内容分发路由的效率,从而影响整个网络的性能,如何在能量约束的情况下实现高效路由是在MDTN-CCN融合网络中进行内容分发的关键。本文首先分析了 MDTN的体系架构和路由策略、CCN的工作原理及内容分发机制,然后对MDTN-CCN融合网络中典型的路由策略和MDTN中的能量管理策略进行了研究,并在此基础上提出了一种基于节点兴趣、剩余能量和中心度的路由策略 ECORP-C(Energy and Centric Based Content Opportunistic Routing Protocol)。该策略依据节点的兴趣将整个网络划分为一个个社区,同时依据节点的剩余能量和中心度值将网络中的节点分为不同的等级,在路由的过程中优先选择能量等级和中心度等级都合适的节点作为中继来转发兴趣包和数据包。最后通过ONE仿真器实现所提出的路由策略,并将其与已有的路由策略Spray and Wait_content、Epidemic_content以及局部属性约束的ECORP-C路由策略进行对比。实验结果表明,ECORP-C在保证内容较高投递率的同时可以有效地节约能量,有利于实现农牧区的内容分发,促进偏远地区的信息化进程。
[Abstract]:Because of the lack of subscription service and the inconvenience of operation, the traditional resource sharing system based on satellite, As a result, it is no longer able to meet the content needs of farmers and herdsmen. The Internet-based content Centric Network CCNs are difficult to implement in farming and pastoral areas where the network infrastructure is inadequate. Mobile portable communication devices, such as smartphones, are becoming increasingly popular in farming and pastoral areas, as well as the continuous development of mobile Delay Tolerant Network (MDN), a mobile delay-tolerant network. It makes it a more efficient way to use mobile portable terminal devices to form MDTN-CCN fusion network for content distribution. However, the energy of mobile portable devices in MDTN is limited, which will affect the efficiency of content distribution routing. Thus affecting the performance of the entire network, How to realize efficient routing under the condition of energy constraint is the key of content distribution in MDTN-CCN fusion network. Firstly, this paper analyzes the architecture and routing strategy of MDTN and its working principle and content distribution mechanism. Then, the typical routing strategy in MDTN-CCN fusion network and the energy management strategy in MDTN are studied, and a kind of node interest based on this strategy is proposed. ECORP-C(Energy and Centric Based Content Opportunistic Routing protocol, which divides the whole network into communities according to the interests of the nodes, and divides the nodes into different levels according to the residual energy and the centrality of the nodes. In the process of routing, the nodes with appropriate energy level and center degree are selected as relays to forward interest packets and packets. Finally, the proposed routing strategy is implemented by ONE simulator. Compared with the existing routing policy Spray and wait content and ECORP-C routing strategy with local attribute constraints, the experimental results show that ECORP-C can effectively save energy and realize content distribution in agricultural and pastoral areas. To promote the information process in remote areas.
【学位授予单位】：内蒙古大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN92

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