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  本文選題：內(nèi)容中心網(wǎng)絡(luò) + 內(nèi)容名��； 參考：《北京郵電大學(xué)》2014年碩士論文

【摘要】：近年來,互聯(lián)網(wǎng)的網(wǎng)絡(luò)規(guī)模和使用流量迅猛快速增長,新型的互聯(lián)網(wǎng)和移動網(wǎng)絡(luò)應(yīng)用APP飛速增加�；ヂ�(lián)網(wǎng)最初的是面向科學(xué)研究設(shè)計的,隨著互聯(lián)網(wǎng)的發(fā)展,在可擴展性、安全性、移動性、能耗等方面面臨了重大挑戰(zhàn)。 為了解決目前互聯(lián)網(wǎng)面臨的問題,國內(nèi)外主要有兩種解決思路,分為“改良”和“革命”兩種。凡是不改變IP的主體地位的,就屬于“改良”,而要替代互聯(lián)網(wǎng)IP的網(wǎng)絡(luò)就叫“革命”,內(nèi)容中心網(wǎng)絡(luò)希望對現(xiàn)有的網(wǎng)絡(luò)進行重新設(shè)計,屬于網(wǎng)絡(luò)“革命”。內(nèi)容網(wǎng)絡(luò)中將不再使用IP地址作為尋址的方式,而是把內(nèi)容作為最基本的實體,只關(guān)注內(nèi)容和數(shù)據(jù),不關(guān)心在哪里,通過內(nèi)容名進行尋址和定位。用存儲來換取帶寬,減少冗余數(shù)據(jù)的傳輸,降低鏈路帶寬消耗。 本文以未來網(wǎng)絡(luò)的研究為出發(fā)點,先闡述內(nèi)容中心網(wǎng)絡(luò)CCN的體系結(jié)構(gòu),工作機制,設(shè)計原則和目標,對CS(Content Store)、 PIT(Pending Interest Table)、 FIB(Forward Information Base)等關(guān)鍵概念給出解釋,介紹其基本的存儲轉(zhuǎn)發(fā)模型,在PARC提出內(nèi)容中心網(wǎng)絡(luò)的基礎(chǔ)之上,更深入的研究內(nèi)容中心網(wǎng)絡(luò)中內(nèi)容的命名體系,實現(xiàn)命名的持久性、可讀性、可擴展性、靈活性、全網(wǎng)唯一性的要求,讓內(nèi)容網(wǎng)絡(luò)能通過內(nèi)容名來驅(qū)使路由,通過分析扁平化和哈希的特點,提出一套類似于URI的命名體系方案,并進行分析和討論。 當內(nèi)容請求包到達路由后,名字的解析和路由是我們研究的最核心的問題。由于內(nèi)容名不定長以及數(shù)量極其龐大,而且還在呈指數(shù)型增長的特點,加大了路由和尋址的難度,本文根據(jù)BGP協(xié)議和DNS解析解決現(xiàn)有網(wǎng)絡(luò)問題的思想,提出內(nèi)容網(wǎng)絡(luò)自治域AS的概念,引入內(nèi)容網(wǎng)絡(luò)自治域,進一步提出"ASNA(Autonomous Systems Network Architecture)"網(wǎng)絡(luò)路由架構(gòu),降低內(nèi)容尋址和定位的復(fù)雜度,提升網(wǎng)絡(luò)運行效率。分析其域間路由,設(shè)計AS Sever的報文結(jié)構(gòu),包括查詢和響應(yīng)報文設(shè)計。為了優(yōu)化內(nèi)容名在FIB和CS中的查找和存儲的效率,本文提出一種內(nèi)容名壓縮和最長前綴匹配算法,提高網(wǎng)絡(luò)的效率。 內(nèi)容中心網(wǎng)絡(luò)是基于安全性和可信設(shè)計的,本文根據(jù)內(nèi)容名的特點,利用內(nèi)容名的空間,引入Sign_id簽名機制,研究基于內(nèi)容提供者身份的可信機制和簽名驗證機制。最后根據(jù)內(nèi)容中心網(wǎng)絡(luò)的體系架構(gòu)進行數(shù)學(xué)建模和分析,利用CCNx和NS-2平臺對結(jié)果進行分析和驗證。
[Abstract]:In recent years, the network scale and traffic of the Internet are increasing rapidly, and the new application app of Internet and mobile network is increasing rapidly. The Internet was originally designed for scientific research. With the development of the Internet, it faces great challenges in scalability, security, mobility, energy consumption and so on. In order to solve the problems faced by the Internet, there are two main solutions at home and abroad, one is "improvement" and the other is "revolution". Those who do not change the status of the main body of IP belong to "improvement", and the network that wants to replace Internet IP is called "revolution". The content-centered network hopes to redesign the existing network, which belongs to the network "revolution". Content network will no longer use IP address as the addressing method, but content as the most basic entity, only pay attention to the content and data, do not care where, through the content name to address and locate. Use storage to exchange bandwidth, reduce redundant data transmission, reduce link bandwidth consumption. In this paper, the architecture, working mechanism, design principles and objectives of CCN are introduced, and the key concepts such as CS (content Store), pie (pending interest Table), FIB (forward Information Base) are explained, and its basic storage and forwarding model is introduced. On the basis of the content center network proposed by Parc, the naming system of content in the content center network is studied in depth to realize the requirements of persistence, readability, expansibility, flexibility and the uniqueness of the whole network. The content network can drive routing by content name. By analyzing the characteristics of flatness and hash, this paper proposes a naming scheme similar to Uri, and analyzes and discusses it. When the content request packet arrives at the route, name resolution and routing are the core problems we study. Due to the fact that the content name is indefinite and the quantity is very large, and the content is growing exponentially, which makes it more difficult to route and address, this paper solves the existing network problems according to the BGP protocol and DNS parsing. The concept of content network autonomous domain (as) is proposed, and the content network autonomous domain is introduced. Furthermore, the "Autonomous Systems Network Architecture" network routing architecture is proposed to reduce the complexity of content addressing and location, and to improve the efficiency of network operation. Analyzing the inter-domain routing, designing the message structure of as Sever, including query and response message design. In order to optimize the efficiency of searching and storing content names in FIB and CS, this paper proposes a content name compression and longest prefix matching algorithm to improve the efficiency of the network. Content-centric network is based on security and trusted design. According to the characteristics of content name and using the space of content name, the signature mechanism is introduced to study the trusted mechanism and signature verification mechanism based on the identity of content provider. Finally, according to the architecture of the content-centric network, mathematical modeling and analysis are carried out, and the results are analyzed and verified by using CCNx and NS-2 platforms.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.4

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相關(guān)期刊論文 前1條

1 閔二龍;陳震;許宏峰;梁勇;;內(nèi)容中心網(wǎng)絡(luò)CCN研究進展探析[J];信息網(wǎng)絡(luò)安全;2012年02期

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本文編號：2108591