互联网体系结构应用适应性评估方法研究

发布时间：2018-02-17 03:16

本文关键词： 体系结构应用适应性应用效用用户效用内置缓存机制微分方程　出处：《清华大学》2014年博士论文　论文类型：学位论文

【摘要】：随着互联网应用环境、类型及组成的多样化发展，构造符合应用变化需求的未来互联体系结构成为学术界和工业界的共识，如何评估提出的方案是否符合应用发展的需求也成为互联网体系结构研究中的一个重要课题。由于互联网体系结构的复杂性，现有互联网体系结构的评估工作相对分散且针对性较强，主要以功能和性能评估为主，缺乏对体系结构自身适应应用变化能力进行评估的框架及模型。本文总结体系结构提供应用服务过程中的扩展性、可部署性和经济性需求，提出了互联网体系结构应用适应性的概念，并围绕其评估方法及应用变化下的互联网体系结构发展问题展开了相关研究，主要的研究内容如下： 1.多角度总结互联网体系结构发展及现有评估工作。总结分析了互联网应用变化的趋势，，针对面向应用变化的高效数据分发体系结构研究进行了综述；从模型、机制和方法三个方面总结分析了互联网体系结构评估工作的研究现状、发展趋势及面临的问题，明确了研究方向。 2.基于应用环境变化导致的挑战及应用发展需求，提出互联网体系结构应用适应性概念及其评估框架。该框架建立在体系结构应用服务扩展能力及经济适应能力基础上，结合效用机制及多学科融合来表示和分析技术及经济因素对体系结构应用适应性的影响，为从多角度建立应用适应性评估模型提供了理论指导。 3.提出基于服务能力的互联网体系结构应用适应性评估模型。该模型从体系结构提供应用服务的本质出发，可支持不同应用组成及类型变化下体系结构适应性的评估。利用该模型对多种内容分发机制的应用适应能力进行了分析讨论，实验结果对于运营商部署和完善相关协议具有重要的参考价值。 4.提出基于用户效用的三网融合评估模型。该模型通过用户效用将应用组成、初始市场份额、社会经济状况、投资及用户群体关系等影响三网合一的要素结合在一起，可用于分析多种体系结构在合作竞争下的发展趋势。基于该模型及微分方程对三网融合发展趋势的分析结果可为网络运营商的决策提供指导。 5.提出一种应用效用最大化的自适应内置缓存系统。该系统从应用需求现状出发，结合现有内容分发机制的优势，综合考虑缓存位置、数据访问热点、数据量、经济开销对应用效用的影响，采用在边缘自治域部署支持组播的内置缓存策略，实现了特定经济开销限制下的高效数据分发。
[Abstract]:With the diversified development of the Internet application environment, types and components, it has become a consensus in academia and industry to construct a future interconnection architecture that meets the needs of application change. How to evaluate whether the proposed scheme meets the needs of application development has also become an important issue in the research of Internet architecture. Because of the complexity of Internet architecture, The evaluation of the existing Internet architecture is relatively scattered and highly targeted, with the main focus on function and performance evaluation. This paper summarizes the scalability, deployable and economic requirements of architecture in providing application services. In this paper, the concept of application adaptability of Internet architecture is put forward, and the related research is carried out around the evaluation method and the development of Internet architecture under the change of application. The main research contents are as follows:. 1. Summarize the development of Internet architecture and the current evaluation work from many angles, summarize and analyze the trend of Internet application change, and summarize the research of efficient data distribution architecture oriented to application change. This paper summarizes and analyzes the current research situation, the development trend and the problems faced by the evaluation of Internet architecture from three aspects: mechanism and method, and clarifies the research direction. 2. Based on the challenges caused by the changes in the application environment and the application development needs, the concept of application adaptability of Internet architecture and its evaluation framework are proposed. The framework is based on the extensibility of architecture application services and the ability of economic adaptation. The utility mechanism and multidisciplinary integration are combined to express and analyze the impact of technology and economic factors on the application adaptability of the architecture, which provides theoretical guidance for the establishment of an application adaptability evaluation model from multiple perspectives. 3. An application adaptability evaluation model of Internet architecture based on service capability is proposed, which is based on the nature of application service provided by architecture. It can support the evaluation of the adaptability of the architecture under the change of application composition and type. This model is used to analyze and discuss the application adaptability of various content distribution mechanisms. The experimental results have important reference value for operators to deploy and improve the related protocols. 4. A three-network fusion evaluation model based on user utility is proposed. The model combines application composition, initial market share, social and economic conditions, investment and user group relationship, etc., which influence the integration of three networks, such as application composition, initial market share, social and economic situation, investment and user group relationship, etc. It can be used to analyze the development trend of various architectures under cooperative competition. The analysis results based on the model and differential equation can provide guidance for network operators to make decisions. 5. An adaptive built-in cache system with maximum application utility is proposed, which considers the cache location, data access hotspots, data volume, considering the advantages of the existing content distribution mechanism and considering the current situation of application requirements. The effect of economic cost on the utility of application is achieved by deploying a built-in cache policy supporting multicast in edge autonomous domains to achieve efficient data distribution under the constraints of specific economic overhead.
【学位授予单位】：清华大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TP393.02

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