【正文】 A scientific method is badly needed to reflect and predict the capabilities of the work. Then OPNET emerges as the times require. This design is in the OPNET surroundings. First, on the basis of analyzing the problem of QoS routing in the wireless sensor works, a new distributed QoS routing algorithm according to the minimum node energies on path and minimum hop counts has been proposed by extending Directed Diffusion. Then the model is designed. By analyzing the results of simulation, I find this porosed algorithm can provide differential services both for realtime traffic and besteffort traffic, achieve the energycostbalancing on the whole work and prolong the work lifetime by 500%. Second, I emphasize my attention on the flow project of WSN and make modeling and simulation about it. From the simulation results, I know the impact of portfolio towards the throughput of the work, data lose rate and pointtopoint delay. By mapping the portfolio with the resources, we may decrease congestion, improve the characteristics of the work and its security. Through Oping, we’re to increase the reliability and accuracy of work programming and designing. Of course, there will be less risk of investment and less wastes which are unnecessary. Keywords: wireless sensor work (WSN), OPNET simulation, QoS routing, directed diffusion, flow project, throughput, delay 河海大學(xué)工學(xué)學(xué)士學(xué)位論文 目錄 目 錄 中文摘要 .............................................................................................................. Ⅰ 英文摘要 .............................................................................................................. Ⅱ 引言 ........................................................................................................................ 1 第 1 章 概述 .......................................................................................................... 3 無(wú)線(xiàn)傳感器網(wǎng)絡(luò) (WSN)概述 .................................................................. 3 無(wú)線(xiàn)傳感器網(wǎng)絡(luò)基本概念 ............................................................. 3 無(wú)線(xiàn)傳感器網(wǎng)絡(luò)的通信結(jié)構(gòu) ......................................................... 3 網(wǎng)絡(luò)仿真 .................................................................................................. 5 什么叫仿真（ Simulation）？ ....................................................... 5 仿真的意義 ..................................................................................... 5 OPNET 簡(jiǎn)介 ............................................................................................ 6 OPNET 的歷史和現(xiàn)狀 ................................................................... 6 OPNET Modeler 的主要特性 ........................................................ 6 OPNET Modeler 建模流程 ............................................................ 7 第 2 章 無(wú)線(xiàn)傳感器網(wǎng)絡(luò)的 QoS 路由研究與仿真 ............................................. 8 WSN 的特點(diǎn) ............................................................................................ 8 WSN 的 QoS 路由 ................................................................................... 8 網(wǎng)絡(luò)模型和 QoS 路由 .................................................................... 9 QoS 路由策略 .............................................................................. 10 基于 DirectedDiffusion 的 QoS 路由擴(kuò)展 .......................................... 10 Directed Diffusion 及其擴(kuò)展機(jī)制 ................................................ 10 算法描述 ...................................................................................... 11 仿真試驗(yàn)與結(jié)果分析 ............................................................................ 12 仿真環(huán)境與評(píng)價(jià)方法 ................................................................... 12 仿真環(huán)境 ............................................................................ 12 評(píng)價(jià)方法 ............................................................................ 13 與傳統(tǒng) DD 的性能比較 ............................................................... 13 不同業(yè)務(wù)混合比例性能分析 ....................................................... 14 本章小結(jié) ................................................................................................ 14 第 3 章 OPNET 流量建模機(jī)制 .......................................................................... 16 OPNET 流量建模機(jī)制綜述 .................................................................. 16 背景路由流量建模 ................................................................................ 17 背景利用率流量建模 ............................................................................ 18 前景業(yè)務(wù)流量建模 ................................................................................ 18河海大學(xué)工學(xué)學(xué)士學(xué)位論文 基于 OPNET 的無(wú)線(xiàn)傳感器網(wǎng)絡(luò) QoS 路 由及流量建模研究與仿真 實(shí)例仿真 ................................................................................................ 19 第 4 章 WSN 流量模型的仿真 .......................................................................... 24 網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu) ........................................................................................ 24 Application Configuration .................................................................... 26 Profile Configuration ........................................................................... 26 搜集統(tǒng)計(jì)量 ............................................................................................ 28 復(fù)制場(chǎng)景 ................................................................................................ 28 配置并運(yùn)行仿真 .................................................................................... 29 查看并分析結(jié)果 .................................................................................... 29 第 5 章 總結(jié)與展望 ............................................................................................ 31 總結(jié) ........................................................................................................ 31 展望 .........................................................