机会移动社会网络中基于访问热点的消息转发机制研究

发布时间：2018-05-29 11:17

本文选题：机会移动社会网络 + 路由算法　；参考：《南京邮电大学》2017年硕士论文

【摘要】：机会移动社会网络是由具有社会特性的移动节点组成的特殊的机会网络。它不仅具有机会网络在通信方面节点之间连接中断、资源受限以及无法保证延时等特点,且节点的移动具有一定的社会性和热点特性。鉴于这些特点,设计高效的路由协议是近年来机会移动社会网络中的热门研究点。本文首先研究了机会移动社会网络的相关理论及关键技术,从而为研究机会移动社会网络中的消息转发机制提供理论基础。在此基础上,重点就机会移动社会网络中节点访问频繁的位置形成的热点特性以及基于社区热点中的路由开展研究。机会移动社会网络中的节点通常频繁访问某些社区热点,而访问其他位置很少。基于此特性,本文提出了一种基于热点的机会移动社会网络模型,分析网络中节点与热点平衡协作的消息扩散过程,提出了一种基于热点与节点协作的消息转发路由算法(Cooperation-based Home and Node Spreading,简称CHNS)。仿真实验表明CHNS算法可以获得较好的性能表现。进一步,本文考虑多社区的机会移动社会网络环境,针对CHNS算法进行扩展研究,提出了基于多社区、多热点的机会移动社会网络模型和社区间联系强度的概念。根据社区间消息转发的实际期望延时,提出了基于多社区的热点与节点协作的消息转发路由算法(Cooperation-based Home and Node Spreading with Multi-Community,简称CHNS_MC)。仿真实验结果表明CHNS_MC算法在投递延时和开销(跳数)上都有较好的性能表现。本文的研究成果为机会移动社会网络路由协议的研究提供思路,可用于机会移动社会网络的实际应用中,具有较好的理论价值和应用前景。
[Abstract]:Opportunistic mobile social network is a special opportunity network composed of mobile nodes with social characteristics. It not only has the characteristics of the interruption of the connection between nodes in the communication aspect of the opportunity network, the limitation of resources and the inability to guarantee the delay, but also the mobility of the nodes has some characteristics of sociality and hot spots. In view of these characteristics, the design of efficient routing protocols is a hot research point in opportunistic mobile social networks in recent years. This paper first studies the relevant theories and key technologies of opportunistic mobile social networks, which provides a theoretical basis for the study of message forwarding mechanisms in opportunistic mobile social networks. On this basis, this paper focuses on the characteristics of hot spots formed by frequent node access in opportunistic mobile social networks and the routing based on community hotspots. Nodes in opportunistic mobile social networks often visit some community hotspots frequently, but rarely access other places. Based on this feature, an opportunistic mobile social network model based on hot spots is proposed to analyze the message diffusion process of nodes and hot spots in the network. In this paper, a message forwarding routing algorithm based on cooperation between hot spots and nodes is proposed, which is called Cooperation-based Home and Node Spreading, (CHNSN). Simulation results show that CHNS algorithm can achieve better performance. Furthermore, considering the opportunity mobile social network environment of multi-community, this paper studies the extension of CHNS algorithm, and puts forward the concept of opportunity mobile social network model based on multi-community and multi-hot spot and the relationship intensity between communities. According to the expected delay of message forwarding between communities, a message forwarding routing algorithm, Cooperation-based Home and Node Spreading with Multi-Community (CHNSMC), is proposed based on multi-community cooperation between hot spots and nodes. Simulation results show that the CHNS_MC algorithm performs well in delivery delay and overhead (hops). The research results of this paper provide ideas for the research of opportunistic mobile social network routing protocols, and can be used in the practical application of opportunistic mobile social networks. It has good theoretical value and application prospect.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.09

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