本文選題：NDN　切入點(diǎn)：蟻群算法　出處：《中南民族大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：目前基于TCP/IP的網(wǎng)絡(luò)體系在資源分配、安全性、移動性等方面存在一定局限。為了解決這些問題,需要研究更能符合未來網(wǎng)絡(luò)發(fā)展要求的下一代互聯(lián)網(wǎng)架構(gòu)。作為一種新型網(wǎng)絡(luò)體系結(jié)構(gòu),命名數(shù)據(jù)網(wǎng)絡(luò)(Named Data Networking,NDN)近年來得到了廣泛關(guān)注及認(rèn)可。在NDN中數(shù)據(jù)包格式中的地址字段已經(jīng)從TCP/IP中的主機(jī)IP地址轉(zhuǎn)變?yōu)樾畔⒌拿?因此,其尋址方式也從傳統(tǒng)的基于數(shù)據(jù)包IP地址尋址方式轉(zhuǎn)變?yōu)楦鶕?jù)數(shù)據(jù)包名字信息進(jìn)行查找的尋址方式。同時(shí),隨著互聯(lián)網(wǎng)業(yè)務(wù)種類的不斷增加,未來網(wǎng)絡(luò)必須能夠有效承載視頻、語音、數(shù)據(jù)等多種業(yè)務(wù),如何保障網(wǎng)絡(luò)中各業(yè)務(wù)服務(wù)質(zhì)量(Quality of Service,QoS),已成為一個(gè)重要的互聯(lián)網(wǎng)研究課題。支持QoS的路由技術(shù)能夠?yàn)椴煌愋蜆I(yè)務(wù)提供區(qū)分化服務(wù),能夠充分利用網(wǎng)絡(luò)資源,滿足關(guān)鍵業(yè)務(wù)的需求。本文在NDN網(wǎng)絡(luò)現(xiàn)有路由策略基礎(chǔ)上,提出一種基于蟻群算法的QoS路由優(yōu)化方案,該方案通過轉(zhuǎn)發(fā)端口度量對路徑進(jìn)行優(yōu)化為各類型業(yè)務(wù)選擇較優(yōu)路徑,有效實(shí)現(xiàn)了NDN中多業(yè)務(wù)的承載,并提高網(wǎng)絡(luò)的傳輸性能。具體工作:首先,闡述了蟻群算法理論基礎(chǔ)及其在網(wǎng)絡(luò)路由中的應(yīng)用,分析了蟻群算法中各參數(shù)的設(shè)置對算法優(yōu)化的影響;介紹了NDN的體系架構(gòu),包括數(shù)據(jù)包類型、信息資源命名方式及其轉(zhuǎn)發(fā)策略等,并對蟻群算法在NDN路由優(yōu)化中的實(shí)例做了簡要論述。其次,根據(jù)NDN中各業(yè)務(wù)的QoS需求將業(yè)務(wù)分成不同的類型,基于蟻群算法提出一種支持QoS的多業(yè)務(wù)多路徑路由方案,著重研究NDN節(jié)點(diǎn)的設(shè)計(jì)、數(shù)據(jù)包結(jié)構(gòu)的改進(jìn)及其運(yùn)行機(jī)制等方面。最后,在ndn SIM仿真平臺上對所提方案進(jìn)行仿真實(shí)驗(yàn)。仿真結(jié)果表明,本文所提出的NDN中支持QoS的路由方法不僅可以為不同類型業(yè)務(wù)選擇不同路徑進(jìn)行傳輸,還能夠充分利用網(wǎng)絡(luò)資源,降低了不同類型業(yè)務(wù)之間的相互影響,為存在多業(yè)務(wù)的NDN網(wǎng)絡(luò)提供了較好地QoS服務(wù)支持。
[Abstract]:The current network architecture based on TCP/IP has some limitations in resource allocation, security, mobility, etc. In order to solve these problems, As a new network architecture, we need to study the next generation Internet architecture that can meet the needs of the future network development. Named Data networking (NDN) has received wide attention and recognition in recent years. The address field in the packet format in NDN has changed from the IP address of the host in TCP/IP to the name of the information. Its addressing mode has also changed from the traditional IP address addressing method based on data packet to the addressing method based on packet name information. At the same time, with the increasing of Internet services, the future network must be able to carry video effectively. Voice, data and other services, how to ensure the quality of service QoS in the network has become an important Internet research topic. The routing technology supporting QoS can provide area differentiation services for different types of services. This paper proposes a QoS routing optimization scheme based on ant colony algorithm based on the existing routing strategy of NDN network. This scheme optimizes the path for each type of service by forwarding port metric, realizes the load carrying of multi-service in NDN effectively, and improves the transmission performance of the network. This paper expounds the theoretical basis of ant colony algorithm and its application in network routing, analyzes the influence of the setting of parameters in ant colony algorithm on algorithm optimization, and introduces the architecture of NDN, including the data packet type. The naming method of information resources and its forwarding strategy are briefly discussed. The examples of ant colony algorithm in NDN routing optimization are briefly discussed. Secondly, according to the QoS requirements of each service in NDN, the services are classified into different types. Based on ant colony algorithm, a multi-service multipath routing scheme supporting QoS is proposed. The design of NDN nodes, the improvement of data packet structure and its running mechanism are studied in detail. The simulation results of the proposed scheme on ndn SIM platform show that the proposed routing method in NDN can not only select different paths for different types of traffic, but also make full use of network resources. It reduces the interaction between different types of services and provides a better QoS service support for NDN networks with multiple services.
【學(xué)位授予單位】：中南民族大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TP393.09
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本文編號：1633675