基于激励的机会网络协作传输机制

发布时间：2017-12-30 22:10

本文关键词：基于激励的机会网络协作传输机制　出处：《北京邮电大学》2015年硕士论文　论文类型：学位论文

【摘要】：智能终端设备在近几年得到了广泛的发展,其普及率逐渐提高,由于智能终端设备提供更好的操作系统支持,终端可以运行功能更加丰富的应用程序。用户在体验丰富多样的移动应用的同时也带来了移动数据业务需求的爆炸式增长。这一现状给蜂窝网络带来了巨大的业务压力,在一些移动节点密集的区域,网络的性能会因为大量移动设备的数据业务请求而下降。为了分流网络数据业务,提升网络吞吐量,有必要引入健壮可靠的负载分流机制来提高网络的整体性能。在移动节点密集区域,节点之间的相遇频率较高,彼此之间往往表现一定的社会关系。在这样的场景下可以引入机会网络,利用节点之间的协作传输分流移动数据。本文将传统集中式网络与机会网络融合,构建混合网络架构。在混合网络架构的基础上,本文设计混合传输路由协议,采用“机会传输为主,中心补传为辅”的方针。路由算法在PRoPHET的基础上引入传输空间和节点信誉概念,在保证数据交付率的同时有效控制副本数量。由于节点往往表现一定的自私性,为了保证路由策略有效执行,本文针对混合网络架构设计了基于信誉的激励机制。与传统激励机制不同,本文设计的激励机制综合考虑节点的社会属性,主要工作集中在量化节点的关联属性上。通过构建量化模型,优化了信誉更新因子,在信誉更新过程中,采用节点主动更新和被动更新两种方式,优化了更新算法,在有效惩罚自私节点同时,维护边缘节点的利益,保证网络的公平性。本文还设计了针对混合网络的仿真平台,采用模块化设计,具有很强的扩展性。其中,平台中的节点单元可以理解为移动终端也可以理解为基站等中心设备。节点类中私有成员内容丰富,能够为路由模块提供丰富的网络数据支持,目前仿真平台能够顺畅运行Epidemic、 CORE等经典路由协议。
[Abstract]:Intelligent terminal equipment has been widely developed in recent years, its popularity has gradually increased, because intelligent terminal devices provide better operating system support. Terminals can run more functional applications. While users experience rich and diverse mobile applications, they also bring explosive growth in the demand for mobile data services. This situation has brought a huge industry to cellular networks. Pressure. In some areas where mobile nodes are dense, the performance of the network will decline because of a large number of data service requests from mobile devices. In order to split the network data services, improve the network throughput. It is necessary to introduce a robust and reliable load shunt mechanism to improve the overall performance of the network. In the mobile node dense area, the meeting frequency of the nodes is high, and the social relations between each other are often certain. In such a scenario, the opportunity network can be introduced. In this paper, the traditional centralized network and opportunity network are combined to construct the hybrid network architecture. Based on the hybrid network architecture, this paper designs the hybrid transport routing protocol. The routing algorithm introduces the concepts of transmission space and node reputation on the basis of PRoPHET. Ensure the data delivery rate while effectively controlling the number of copies. In order to ensure the effective implementation of routing strategy, this paper designs a credit-based incentive mechanism for hybrid network architecture, which is different from the traditional incentive mechanism. The incentive mechanism designed in this paper takes into account the social attributes of nodes, and the main work is focused on the correlation attributes of quantized nodes. By constructing a quantitative model, the reputation update factor is optimized, and in the process of reputation updating. Both active and passive updating methods are adopted to optimize the updating algorithm to maintain the interests of the edge nodes and ensure the fairness of the network while punishing the selfish nodes effectively. This paper also designed a simulation platform for hybrid networks, using modular design, which has a strong scalability. The node unit in the platform can be understood as a mobile terminal or a central device such as a base station. The private members in the node class are rich in content and can provide abundant network data support for the routing module. At present, the simulation platform can run the classic routing protocols such as Epidemicand CORE smoothly.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN929.5

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