面向服务的未来互联网服务迁移策略的研究

发布时间：2018-04-21 13:01

本文选题：未来网络 + 服务迁移策略　；参考：《北京邮电大学》2014年硕士论文

【摘要】：由于目前互联网的不断扩展和网络服务的广泛分布特性,web服务的质量保证日益受到了挑战。当网络拥塞时,访问远端的热门数据服务将耗费较多网络资源,并且无法保证用户的服务质量。而通过将服务或其副本迁移到“本地”,使用户就近获得服务的技术较好地解决了这个问题。服务迁移策略在云计算、内容分发网络和移动agent领域都有相关的研究并取得了较好的成果。因此,面向服务的未来互联网的体系结构,面对网络环境的复杂多样,可以通过研究服务动态迁移方法来降低网络资源消耗、增强网络扩展性、进一步提高用户服务质量。先前文献的传统研究存在一些共同的隐性问题：服务迁移策略是被动的、没有体现局部特性、计算代价较高。本论文提出了一个基于局部信息的主动服务请求迁移策略以克服上述问题,使服务迁移更有目标性和智能性；设计了一个适合该策略的基本框架结构和代价模型,采用最短路径树(SPT)局部搜索确定最终迁移位置。仿真结果表明该策略在降低通信资源消耗和减少服务响应时延方面有较好的性能提升。本论文分为四个部分：第一,对国内外未来网络做了简要介绍,并阐述了服务迁移策略的研究现状。第二,阐述了传统的服务迁移策略的基本结构和方法策略,为面向服务的未来互联网服务迁移策略的提出提供了启发和理论依据。第三,探讨目前研究文献中服务迁移策略不足之处,提出基于局部信息的主动服务请求迁移策略,设计新的代价参考模型和请求节点与服务端节点的协同工作方式,最后基于SPT构造的拓扑确定迁移位置。最后,通过网络仿真软件NS2对论文提出的主动服务迁移策略进行了仿真并对仿真结果进行了分析。
[Abstract]:Due to the continuous expansion of the Internet and the wide distribution of web services, the quality assurance of web services has been increasingly challenged. When the network is congested, accessing the hot data service of the remote end will consume more network resources and can not guarantee the user's quality of service. By migrating the service or its replica to the "local", the technology of getting the service nearby solves this problem. Service migration strategy has been studied in cloud computing, content distribution network and mobile agent. Therefore, the architecture of the future service-oriented Internet, facing the complexity and diversity of the network environment, can reduce the consumption of network resources, enhance the expansibility of the network and further improve the quality of service by studying the method of dynamic migration of services. There are some common implicit problems in the traditional research of previous literature: the service migration strategy is passive, does not reflect the local characteristics, and the computational cost is high. In this paper, an active service request migration strategy based on local information is proposed to overcome the above problems and make the service migration more targeted and intelligent. The local search of the shortest path tree (SPT) is used to determine the final migration location. Simulation results show that the proposed strategy can reduce the consumption of communication resources and reduce the delay of service response. This thesis is divided into four parts: First, the future network at home and abroad is briefly introduced, and the research status of service migration strategy is described. Secondly, the basic structure and method strategy of the traditional service migration strategy are expounded, which provides the inspiration and theoretical basis for the future service-oriented Internet service migration strategy. Thirdly, this paper discusses the shortcomings of the service migration strategy in the current literature, proposes an active service request migration strategy based on local information, designs a new cost reference model and the cooperative working mode between the request node and the server node. Finally, the migration location is determined based on the topology constructed by SPT. Finally, the active service migration strategy proposed in this paper is simulated by the network simulation software NS2 and the simulation results are analyzed.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.09

【参考文献】