本文關(guān)鍵詞： 體系結(jié)構(gòu)應(yīng)用適應(yīng)性 應(yīng)用效用 用戶效用 內(nèi)置緩存機(jī)制 微分方程　出處：《清華大學(xué)》2014年博士論文　論文類型：學(xué)位論文

【摘要】：隨著互聯(lián)網(wǎng)應(yīng)用環(huán)境、類型及組成的多樣化發(fā)展，構(gòu)造符合應(yīng)用變化需求的未來(lái)互聯(lián)體系結(jié)構(gòu)成為學(xué)術(shù)界和工業(yè)界的共識(shí)，如何評(píng)估提出的方案是否符合應(yīng)用發(fā)展的需求也成為互聯(lián)網(wǎng)體系結(jié)構(gòu)研究中的一個(gè)重要課題。由于互聯(lián)網(wǎng)體系結(jié)構(gòu)的復(fù)雜性，現(xiàn)有互聯(lián)網(wǎng)體系結(jié)構(gòu)的評(píng)估工作相對(duì)分散且針對(duì)性較強(qiáng)，主要以功能和性能評(píng)估為主，缺乏對(duì)體系結(jié)構(gòu)自身適應(yīng)應(yīng)用變化能力進(jìn)行評(píng)估的框架及模型。本文總結(jié)體系結(jié)構(gòu)提供應(yīng)用服務(wù)過程中的擴(kuò)展性、可部署性和經(jīng)濟(jì)性需求，提出了互聯(lián)網(wǎng)體系結(jié)構(gòu)應(yīng)用適應(yīng)性的概念，并圍繞其評(píng)估方法及應(yīng)用變化下的互聯(lián)網(wǎng)體系結(jié)構(gòu)發(fā)展問題展開了相關(guān)研究，主要的研究?jī)?nèi)容如下： 1.多角度總結(jié)互聯(lián)網(wǎng)體系結(jié)構(gòu)發(fā)展及現(xiàn)有評(píng)估工作。總結(jié)分析了互聯(lián)網(wǎng)應(yīng)用變化的趨勢(shì)，，針對(duì)面向應(yīng)用變化的高效數(shù)據(jù)分發(fā)體系結(jié)構(gòu)研究進(jìn)行了綜述；從模型、機(jī)制和方法三個(gè)方面總結(jié)分析了互聯(lián)網(wǎng)體系結(jié)構(gòu)評(píng)估工作的研究現(xiàn)狀、發(fā)展趨勢(shì)及面臨的問題，明確了研究方向。 2.基于應(yīng)用環(huán)境變化導(dǎo)致的挑戰(zhàn)及應(yīng)用發(fā)展需求，提出互聯(lián)網(wǎng)體系結(jié)構(gòu)應(yīng)用適應(yīng)性概念及其評(píng)估框架。該框架建立在體系結(jié)構(gòu)應(yīng)用服務(wù)擴(kuò)展能力及經(jīng)濟(jì)適應(yīng)能力基礎(chǔ)上，結(jié)合效用機(jī)制及多學(xué)科融合來(lái)表示和分析技術(shù)及經(jīng)濟(jì)因素對(duì)體系結(jié)構(gòu)應(yīng)用適應(yīng)性的影響，為從多角度建立應(yīng)用適應(yīng)性評(píng)估模型提供了理論指導(dǎo)。 3.提出基于服務(wù)能力的互聯(lián)網(wǎng)體系結(jié)構(gòu)應(yīng)用適應(yīng)性評(píng)估模型。該模型從體系結(jié)構(gòu)提供應(yīng)用服務(wù)的本質(zhì)出發(fā)，可支持不同應(yīng)用組成及類型變化下體系結(jié)構(gòu)適應(yīng)性的評(píng)估。利用該模型對(duì)多種內(nèi)容分發(fā)機(jī)制的應(yīng)用適應(yīng)能力進(jìn)行了分析討論，實(shí)驗(yàn)結(jié)果對(duì)于運(yùn)營(yíng)商部署和完善相關(guān)協(xié)議具有重要的參考價(jià)值。 4.提出基于用戶效用的三網(wǎng)融合評(píng)估模型。該模型通過用戶效用將應(yīng)用組成、初始市場(chǎng)份額、社會(huì)經(jīng)濟(jì)狀況、投資及用戶群體關(guān)系等影響三網(wǎng)合一的要素結(jié)合在一起，可用于分析多種體系結(jié)構(gòu)在合作競(jìng)爭(zhēng)下的發(fā)展趨勢(shì)。基于該模型及微分方程對(duì)三網(wǎng)融合發(fā)展趨勢(shì)的分析結(jié)果可為網(wǎng)絡(luò)運(yùn)營(yíng)商的決策提供指導(dǎo)。 5.提出一種應(yīng)用效用最大化的自適應(yīng)內(nèi)置緩存系統(tǒng)。該系統(tǒng)從應(yīng)用需求現(xiàn)狀出發(fā)，結(jié)合現(xiàn)有內(nèi)容分發(fā)機(jī)制的優(yōu)勢(shì)，綜合考慮緩存位置、數(shù)據(jù)訪問熱點(diǎn)、數(shù)據(jù)量、經(jīng)濟(jì)開銷對(duì)應(yīng)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(shí)現(xiàn)了特定經(jīng)濟(jì)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(xué)位授予單位】：清華大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.02

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