發(fā)布時間：2018-02-17 03:16

  本文關鍵詞： 體系結構應用適應性 應用效用 用戶效用 內(nèi)置緩存機制 微分方程　出處：《清華大學》2014年博士論文　論文類型：學位論文

【摘要】：隨著互聯(lián)網(wǎng)應用環(huán)境、類型及組成的多樣化發(fā)展，構造符合應用變化需求的未來互聯(lián)體系結構成為學術界和工業(yè)界的共識，如何評估提出的方案是否符合應用發(fā)展的需求也成為互聯(lián)網(wǎng)體系結構研究中的一個重要課題。由于互聯(lián)網(wǎng)體系結構的復雜性，現(xiàn)有互聯(lián)網(wǎng)體系結構的評估工作相對分散且針對性較強，主要以功能和性能評估為主，缺乏對體系結構自身適應應用變化能力進行評估的框架及模型。本文總結體系結構提供應用服務過程中的擴展性、可部署性和經(jīng)濟性需求，提出了互聯(lián)網(wǎng)體系結構應用適應性的概念，并圍繞其評估方法及應用變化下的互聯(lián)網(wǎng)體系結構發(fā)展問題展開了相關研究，主要的研究內(nèi)容如下： 1.多角度總結互聯(lián)網(wǎng)體系結構發(fā)展及現(xiàn)有評估工作�？偨Y分析了互聯(lián)網(wǎng)應用變化的趨勢，，針對面向應用變化的高效數(shù)據(jù)分發(fā)體系結構研究進行了綜述；從模型、機制和方法三個方面總結分析了互聯(lián)網(wǎng)體系結構評估工作的研究現(xiàn)狀、發(fā)展趨勢及面臨的問題，明確了研究方向。 2.基于應用環(huán)境變化導致的挑戰(zhàn)及應用發(fā)展需求，提出互聯(lián)網(wǎng)體系結構應用適應性概念及其評估框架。該框架建立在體系結構應用服務擴展能力及經(jīng)濟適應能力基礎上，結合效用機制及多學科融合來表示和分析技術及經(jīng)濟因素對體系結構應用適應性的影響，為從多角度建立應用適應性評估模型提供了理論指導。 3.提出基于服務能力的互聯(lián)網(wǎng)體系結構應用適應性評估模型。該模型從體系結構提供應用服務的本質出發(fā)，可支持不同應用組成及類型變化下體系結構適應性的評估。利用該模型對多種內(nèi)容分發(fā)機制的應用適應能力進行了分析討論，實驗結果對于運營商部署和完善相關協(xié)議具有重要的參考價值。 4.提出基于用戶效用的三網(wǎng)融合評估模型。該模型通過用戶效用將應用組成、初始市場份額、社會經(jīng)濟狀況、投資及用戶群體關系等影響三網(wǎng)合一的要素結合在一起，可用于分析多種體系結構在合作競爭下的發(fā)展趨勢�；谠撃Ｐ图拔⒎址匠虒θW(wǎng)融合發(fā)展趨勢的分析結果可為網(wǎng)絡運營商的決策提供指導。 5.提出一種應用效用最大化的自適應內(nèi)置緩存系統(tǒng)。該系統(tǒng)從應用需求現(xiàn)狀出發(fā)，結合現(xiàn)有內(nèi)容分發(fā)機制的優(yōu)勢，綜合考慮緩存位置、數(shù)據(jù)訪問熱點、數(shù)據(jù)量、經(jīng)濟開銷對應用效用的影響，采用在邊緣自治域部署支持組播的內(nèi)置緩存策略，實現(xiàn)了特定經(jīng)濟開銷限制下的高效數(shù)據(jù)分發(fā)。
[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.
【學位授予單位】：清華大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TP393.02

【參考文獻】

相關期刊論文 前1條

1 王恩海;李幼平;;基于無尺度網(wǎng)絡的互聯(lián)網(wǎng)信息播存體系研究[J];電子學報;2011年04期

本文編號：1517088