【摘要】：Ad Hoc網(wǎng)絡(luò)作為一門新興的無線通信技術(shù)，因其自組網(wǎng)、可移動(dòng)等顯著特點(diǎn)，被廣泛的應(yīng)用在城市智能交通管理中。由于城市道路場景中存在著多車道、多岔口等復(fù)雜情形，以及行人與非機(jī)動(dòng)車輛移動(dòng)隨意性等干擾因素，道路信息復(fù)雜多變。所以導(dǎo)致作為Ad Hoc無線網(wǎng)絡(luò)中最基本的通信方式——廣播技術(shù)，目前存在的幾種算法都存在局限性，因此提出了基于節(jié)點(diǎn)相對(duì)距離與消息類型的廣播算法(theBroadcasting Algorithm based on Relatively Distance and Message Type, RDMT-BA)。具體內(nèi)容如下： 首先，介紹了Ad Hoc網(wǎng)絡(luò)的基本結(jié)構(gòu)、特點(diǎn)及應(yīng)用，并對(duì)目前常見廣播算法的優(yōu)缺點(diǎn)進(jìn)行了詳盡的討論和分析。 其次，根據(jù)城市場景的復(fù)雜多變性，提出了RDMT-BA廣播算法。該算法定義了相對(duì)距離S、相對(duì)速度v、轉(zhuǎn)發(fā)閾值D和等待時(shí)間T四個(gè)參數(shù)，并應(yīng)用于直路和岔路兩種不同的場景，分別在覆蓋率、轉(zhuǎn)發(fā)節(jié)省數(shù)和延遲時(shí)間三個(gè)性能上，進(jìn)行了仿真分析，同時(shí)與洪泛算法進(jìn)行了對(duì)比。 最后，應(yīng)用ZigBee無線技術(shù)，，設(shè)計(jì)了相應(yīng)的硬件模塊和軟件程序，并進(jìn)行了詳細(xì)的實(shí)驗(yàn)測試。實(shí)驗(yàn)結(jié)果與RDMT-BA算法的仿真數(shù)據(jù)進(jìn)行比對(duì)分析，驗(yàn)證了RDMT-BA算法的可行性和準(zhǔn)確性。
[Abstract]:As a new wireless communication technology, Ad Hoc network is widely used in urban intelligent traffic management because of its characteristics of ad hoc network and mobility. The road information is complex and changeable because of the complex situations such as multi-lane and multi-fork in the urban road scene and the random movement of pedestrians and non-motor vehicles. Therefore, as the most basic communication mode in Ad Hoc wireless network, the broadcast technology has some limitations. Therefore, a broadcast algorithm based on the relative distance between nodes and message types, (theBroadcasting Algorithm based on Relatively Distance and Message Type, RDMT-BA) is proposed. The main contents are as follows: firstly, the basic structure, characteristics and applications of Ad Hoc network are introduced, and the advantages and disadvantages of common broadcast algorithms are discussed and analyzed in detail. Secondly, according to the complex variability of urban scene, the RDMT-BA broadcast algorithm is proposed. The algorithm defines four parameters, namely relative distance S, relative velocity v, forwarding threshold D and waiting time T, and applies them to two different scenarios, namely, the coverage rate, the forwarding savings and the delay time, respectively. The simulation analysis is carried out, and the flooding algorithm is compared. Finally, using ZigBee wireless technology, the corresponding hardware modules and software programs are designed, and detailed experimental tests are carried out. The experimental results are compared with the simulation data of RDMT-BA algorithm to verify the feasibility and accuracy of the RDMT-BA algorithm.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U495;TN929.5;TP391.44

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本文編號(hào)：2218227