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無線自組織網(wǎng)絡(luò)(adhoc)路由協(xié)議性能比較(已修改)

2024-12-02 06:59 本頁面
 

【正文】 無線自組織網(wǎng)絡(luò) (Ad hoc)路由協(xié)議性能比較 系 (部 ): 專 業(yè): 通信工程 學(xué) 號: 學(xué)生姓 名: 指導(dǎo)教 師: 2020 年 06 月 長沙學(xué)院 畢業(yè) 論文 I 摘 要 隨著網(wǎng)絡(luò)技術(shù)的發(fā)展,路由選擇技術(shù)成為移動無線自組織網(wǎng)絡(luò)的關(guān)鍵技術(shù)之一。如何針對各種特定的應(yīng)用場景提出與之對應(yīng)的協(xié)議,是當(dāng)前研究的主要問題。 本次畢業(yè)論文,我主要是在 網(wǎng)絡(luò)仿真軟件所提 供的平臺下,搭建各種不同的網(wǎng)絡(luò)仿真環(huán)境,并對 AdHoc 網(wǎng)絡(luò) 現(xiàn)有的三種 較成熟的路由協(xié)議: DSDV(目標(biāo)序列距離矢量路由協(xié)議 )、 AODV(按需距離矢量路由協(xié)議 )、 DSR (動態(tài)源路由協(xié)議 ),進(jìn)行仿真 研究 。根據(jù)仿真結(jié)果, 從 平均端到端延時(shí), 分組投遞比, 路由開銷,平均跳數(shù)等 幾個(gè)方面, 作出比較。 并分析各自所適用的環(huán)境以及存在的缺點(diǎn),提出自己的看法。 本文 主要工作如下: 1)查閱文獻(xiàn)資料,對 AdHoc 網(wǎng)絡(luò)有個(gè)全局的認(rèn)識與了解 ; 2)學(xué)習(xí) 網(wǎng)絡(luò)模擬器的基礎(chǔ) 原理,操作步驟 , 學(xué)習(xí)其所采用的 2 種編程語言:Otcl 和 C++,并且能熟練的用 平臺搭建符合自己定義的網(wǎng)絡(luò)模型 ; 3)翻譯 三種涉及到的 AdHoc 網(wǎng)絡(luò) 路由協(xié)議的英文原版資料,加深對協(xié)議的原理的了解和認(rèn)識 ; 4)設(shè)計(jì) AdHoc 網(wǎng)絡(luò) 仿真 所采用 網(wǎng)絡(luò)模型 ,網(wǎng)絡(luò)環(huán)境 , 并編寫仿真程序 分別 對三種路由協(xié)議進(jìn)行仿真 ; 5)編制 gawk 腳本語言程序, 分析仿真 時(shí)所追蹤記錄的 結(jié)果, 并用 gnuplot 繪圖工具繪制出直觀的圖形 ; 6)通過 對 最終 結(jié)果 圖 的 比較 分析 , 得出 如下 結(jié)論: DSDV 協(xié)議在小規(guī)模網(wǎng)絡(luò)環(huán)境下,各項(xiàng)的性能都比較穩(wěn)定突出,然而規(guī)模不斷 增大的時(shí)候,他的丟包率一直都最大的,適用于低 速,低負(fù)載的環(huán)境中 。 AODV 協(xié)議在各種環(huán)境中的性能參數(shù)都很好,都很穩(wěn)定,因此比較適合網(wǎng)絡(luò)規(guī)模大,拓?fù)渥兓?,?fù)載大的場景中。 DSR 協(xié)議整體表現(xiàn)來看,不受網(wǎng)絡(luò)規(guī)模的影響,各種情況下分組投遞比最高,路由開銷很低,因此適用在高速,低負(fù)載的網(wǎng)絡(luò)環(huán)境中。 關(guān)鍵詞 : 無線自組織網(wǎng)絡(luò) , 網(wǎng)絡(luò)仿真, , DSDV, AODV, DSR 長沙學(xué)院 畢業(yè) 論文 II ABSTRACT With the development of work technologies, routing selection bees one of the key technologies of adhoc work . How to propose the specific protocols to specific application is the main problem of current research. In the paper, basied on the platform provided by the software NS2 ,I mainly builded different work simulation environment and simulated three mature existing routing protocols: DSDV (DestinationSequenced DistanceVector Routing Protocol), AODV (Ad Hoc OnDemand Distance Vector protocols), DSR (Dynamic Source Routing Protocol), . Then according to the results, make a analysis and parison in terms of average of endtoend delay, packet delivery rate, routing load, the average hops, etc. Analysed their matched environment, as well as existent shortages and present my own views. My main jobs as follows: 1) Consult reference books, understand and aware of AdHoc work in the large 2) Study the basic principleamp。operating steps of NS2 , to learn two kinds of programming languages which equipped in NS2: Otclamp。C++, and can build expertly work model on NS2 3) Translate the English original data refering to those three AdHoc work routing protocol , better understand and know the the principle of protocols. 4) According to simulation conclusion expected , design a work model, and bulid work environment, simulate the three routing protocols. 5) Compile procedures with gawk, analyse the trace record, and plot figure with gnuplot. 6) According to figures of final results , e to a conclusion: in smallscale work environment, the performance of DSDV are all , along with increasing of work size ,its packet loss rate is the largest. So it is applicable to lowspeed, lowload environment rather. The performance of AODV are very good and stable, it suit for the scene of largescale work, topology changes quickly and big load .Overall interview of the DSR,it is not affected by the size of work. In all situations, the rate of packet deliversion of DSR is the highest, and the routing overhead is very low. So it is suitable for the work environment with highspeed and lowload . Keywords: Wireless Adhoc work, Network Simulation, Performance paring,DSDV,AODV,DSR 長沙學(xué)院 畢業(yè) 論文 III 目 錄 摘 要 ........................................................ I ABSTRACT................................................... II 第 1 章 緒論 ................................................. 1 Ad Hoc 網(wǎng)絡(luò)研究的背景及意義 ....................................... 1 Ad Hoc 網(wǎng)絡(luò)的背景 ............................................ 1 Ad hoc 網(wǎng)絡(luò)的現(xiàn)狀 ............................................ 1 Ad hoc 網(wǎng)絡(luò)研究的意義 ........................................ 3 Ad hoc 概述 ....................................................... 3 Ad Hoc 的體系結(jié)構(gòu) ............................................ 3 Ad Hoc 的關(guān)鍵技術(shù) ............................................ 6 Ad Hoc 的應(yīng)用場合 ............................................ 7 本論文主要進(jìn)行的工作和組織結(jié)構(gòu) .................................... 8 本論文主要進(jìn)行的工作 ........................................ 8 本論文的組織結(jié)構(gòu) ............................................ 8 第 2 章 Ad Hoc 網(wǎng)絡(luò)路由協(xié)議的概述 ............................ 9 Ad Hoc 無線網(wǎng)絡(luò)的路由協(xié)議分類 ............................................................................. 9 三種典型的 Ad Hoc 協(xié)議 ......................................................................................... 10 DSDV(DestinationSequenced DistanceVector Routing)協(xié)議 ...................... 10 AODV(Ad Hoc OnDemand Distance Vector Protocols)協(xié)議 ....................... 10 DSR(Dynamic Source Routing)協(xié)議 ............................................................. 12 評價(jià) Ad Hoc 網(wǎng)絡(luò)路由協(xié)議的標(biāo)準(zhǔn) ........................................................................ 13 第 3 章 Ad Hoc 網(wǎng)絡(luò)的三種路由協(xié)議的仿真與分析 ................ 15 網(wǎng)絡(luò)仿真軟件簡介 ................................................................................................... 15 概述 ...................................................................................................... 16 的結(jié)構(gòu) .................................................................................................. 16 的 2 種編程語言 – C++和 Otcl ......................................................... 17 現(xiàn)有的仿真元素 .................................................................................. 17 的網(wǎng)絡(luò)仿真方法和一般過程 .............................................................. 18 的應(yīng)用范圍 .......................................................................................... 19 仿真模型的建立 ................................................... 20 隨機(jī)移動模型以及流量生成器的設(shè)置 ........................... 20 仿真模型參數(shù) ............................................... 21 仿真關(guān)鍵代碼
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