基于OPNET的IP QoS技術(shù)研究

電子通信論文編號:TX228 有開題報告，任務(wù)書， 論文字?jǐn)?shù):18413,頁數(shù):38

目錄
摘要 I
Abstract II
引言 1
1  IP QoS技術(shù) 1
1.1  IP QoS基本概念 1
1.1.1  IP QoS的定義 1
1.1.2 IP QoS的參數(shù) 1
1.2  IP QoS 的兩種主要服務(wù)模型 2
1.2.1  綜合業(yè)務(wù)模型InterServ 2
1.2.2  DiffServ模型 5
1.2.3  兩種模型的結(jié)合 9
1.3 IP QoS實現(xiàn)技術(shù) 10
1.3.1報文分類 10
1.3.2 擁塞管理 10
1.3.3 避免擁塞 11
1.3.4 流量監(jiān)管和整形 12
1.4  IP QoS 有待研究的問題 12
2  OPNET仿真軟件 14
2.1 OPNET簡介 14
2.1.1 OPNET的功能 14
2.1.2 OPNET軟件的特點(diǎn) 14
2.2 OPNET網(wǎng)絡(luò)仿真軟件的使用 15
3 在OPNET上實現(xiàn)IP QoS仿真 17
3.1網(wǎng)絡(luò)設(shè)計思想 17
3.1.1模型介紹 17
3.1.2設(shè)計思想 20
3.2仿真實現(xiàn) 20
3.2.1仿真目標(biāo) 20
3.2.2仿真過程 20
3.2.3結(jié)果分析 29
3.3小結(jié) 31
結(jié)論 32
致謝 33
參考文獻(xiàn) 34

摘要
 在Internet迅速發(fā)展的今天，人們非常關(guān)注如何能夠高效、高質(zhì)量地傳輸Internet業(yè)務(wù)以及實時多媒體業(yè)務(wù)。傳統(tǒng)Internet是一種盡力而為的服務(wù)方式，已不能適應(yīng)一些新業(yè)務(wù)（如I P 電話、傳真、電子商務(wù)等）對服務(wù)質(zhì)量的要求，IP QoS的研究成為目前的熱點(diǎn)。因此，通信網(wǎng)絡(luò)的仿真，成為通信領(lǐng)域的熱點(diǎn)問題。如何高效地建立網(wǎng)絡(luò)模型，如何對網(wǎng)絡(luò)模型進(jìn)行修改以提高其性能，如何提高 IP QoS等，都需要網(wǎng)絡(luò)仿真。而OPNET則是當(dāng)前網(wǎng)絡(luò)仿真以及分析領(lǐng)域一種十分優(yōu)秀的軟件，特別是在優(yōu)化通信網(wǎng)絡(luò)和提高網(wǎng)絡(luò)效率方面有十分顯著的效果。
 本文首先介紹了IP QoS的基本概念，其次分析了IP QoS的關(guān)鍵技術(shù)，如綜合服務(wù)模型、區(qū)分服務(wù)模型以及主要的實現(xiàn)技術(shù)等，并就各種實現(xiàn)方法的特點(diǎn)進(jìn)行了總結(jié)。最后使用OPNET仿真軟件構(gòu)建基于IP QoS技術(shù)的網(wǎng)絡(luò)模型，對其性能進(jìn)行仿真。因此，IP QoS技術(shù)的研究具有一定的現(xiàn)實意義。
 
 關(guān)鍵詞：IP QoS  網(wǎng)絡(luò)仿真  OPNET 
 
  
 
 
Abstract
 With the current boon in Internet usage special due to its proliferation into business, there is a greater and more urgent need for the transmission of efficient and high-quality service and real-time multi-media service. Traditional IP is a best-efforts service, now it can not fit for some new services (For example, IP phone, IP Fax, electron commerce and etc.) of Quality of Service. Quality of Service has been a research issue in society. Thus the communications network simulation, become a hot issue. How to make a network model, how to modify the network model to improve the function and how to improve the Quality of Service of IP network need network simulation. Then the OPNET is very excellent network simulation software, especially in optimization communication network and raising network efficiency.
 This paper firstly introduces some basic concepts about QoS .Secondly the paper analyses several key technique, such as Integrated Services, differentiated services and achievement techniques of QoS and so on. And the paper summarizes the traits of these achievement techniques. Finally the paper introduces the principle of OPNET software usage. Using OPNET simulation software builds the network which is on the basis of IP QoS technique and simulates the performance of the network. So, the research of the IP QoS technique has certain meaning of the realism.
 
Keywords: IP QoS   Network Simulation   OP