移动容迟网络中基于虚拟货币的内容分发激励策略研究

发布时间：2018-01-25 09:41

本文关键词： 移动容迟网络内容分发激励策略虚拟货币　出处：《内蒙古大学》2017年硕士论文　论文类型：学位论文

【摘要】：移动容迟网络(MobileDTN,简称MDTN)是从延迟容忍网络(Delay Tolerant Network,简称DTN)发展起来的一种新型网络,其特点是节点移动性强、长延迟、低传输率,采取"存储-携带-转发"的路由方式转发数据。在MDTN中引入内容分发技术,能够使节点就近获取内容资源,降低传输延迟,提高网络性能。然而,节点为了节省自身有限的资源如能量、缓存和CPU等,不愿为其他节点转发数据。目前已有的研究表明节点的这种自私行为导致数据传输率下降,对网络的性能产生了严重影响。为了解决这个问题,提高节点间的合作性,本文提出了一种基于虚拟货币的激励策略 VCBIS(Virtual Currency Based Incentive Strategy)。该策略的主要思想是节点从网络中获取内容资源时需要支付一定的虚拟货币,而节点帮助其他节点转发数据后能够获取网络系统给予其的货币奖励。节点为了赚取虚拟货币,将积极地参与数据的转发。同时,为了抵御恶意节点对该激励策略发起的各种攻击行为,我们还引入了密码学中的签名加密技术,提高了网络的安全性。最后我们对该策略在节点预算、有效性、安全性和可行性等方面的问题进行了综合分析,并利用ONE仿真工具将该策略在真实数据集下进行了仿真实验。仿真结果表明节点的自私行为致使网络性能降低,而应用本策略后能够提高数据传输率、降低网络延迟,改善了网络的性能。
[Abstract]:Mobile Delay-tolerant Network (MDN) is a delay Tolerant Network from a delay tolerant network. DTN-based network is a new network, which is characterized by strong mobility, long delay and low transmission rate. Using "store-carry-forward" route to forward data. The introduction of content distribution technology in MDTN can enable nodes to obtain content resources nearby, reduce transmission delay, and improve network performance. In order to save their limited resources, such as energy, cache and CPU, nodes are unwilling to forward data for other nodes. It has a serious impact on the performance of the network. In order to solve this problem, the cooperation between nodes is improved. In this paper, an incentive strategy based on virtual currency, VCBIS(Virtual Currency Based Incentive strategy, is proposed. The main idea of the strategy is that nodes need to pay a certain amount of virtual currency when they obtain content resources from the network. In order to earn the virtual currency, the node will actively participate in the transmission of data after helping other nodes forward the data. At the same time. In order to resist all kinds of attacks by malicious nodes on the incentive policy, we also introduce the signature encryption technology in cryptography to improve the security of the network. The safety and feasibility are comprehensively analyzed. The simulation results show that the selfish behavior of the nodes results in the network performance degradation, and the application of this strategy can improve the data transmission rate. Reduce network delay and improve network performance.
【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】：TN929.5

【相似文献】