本文關(guān)鍵詞： 智能交通系統(tǒng) 車聯(lián)網(wǎng) 混合業(yè)務(wù) 媒體接入控制　出處：《北京郵電大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著社會發(fā)展和經(jīng)濟水平的提高,機動車保有量,尤其是私家車的數(shù)量大大增加。汽車數(shù)量的增加帶了很多隨之而來的問題,其中交通擁堵和道路安全問題尤為突出。因此研究人員提出智能交通系統(tǒng)來應(yīng)對這些問題。車聯(lián)網(wǎng)是智能交通系統(tǒng)實現(xiàn)的重要組成部分。車聯(lián)網(wǎng)可以實現(xiàn)車輛間的信息交互,提高道路交通安全；它還可以為乘車人員提供互聯(lián)網(wǎng)接入,增加乘車時的樂趣。目前車聯(lián)網(wǎng)的通信技術(shù)主要有由IEEE制定的WAVE/802.11p協(xié)議族。在車載無線通信系統(tǒng)中,該協(xié)議因為最具代表性受到研究者廣泛關(guān)注,很多車聯(lián)網(wǎng)通信系統(tǒng)的研究都是基于該協(xié)議進行的。 本文首先簡要介紹了目前車聯(lián)網(wǎng)的研究和發(fā)展?fàn)顩r,重點介紹了WAVE協(xié)議的媒體接入控制(MAC)層設(shè)計和車聯(lián)網(wǎng)MAC層設(shè)計的問題。隨后介紹了本文為了考察車聯(lián)網(wǎng)混合業(yè)務(wù)性能做出的仿真系統(tǒng)分析以及設(shè)計。接下來,本文結(jié)合現(xiàn)有網(wǎng)絡(luò)流量的分析,定義了車聯(lián)網(wǎng)中的混合業(yè)務(wù)和各類業(yè)務(wù)的模型。隨后本文考察了在給定的混合業(yè)務(wù)下IEEE802.11p的MAC層性能,即現(xiàn)有協(xié)議對于混合業(yè)務(wù)的支持能力,并針對IEEE802.11p對于混合業(yè)務(wù)支持能力不足的情況,提出了一種新的基于分布式時分多址技術(shù)的MAC層改進方案,CFR MAC。經(jīng)過本文的車聯(lián)網(wǎng)仿真平臺的驗證,本文提出的CFR MAC性能總體優(yōu)于IEEE802.11p的MAC機制,可以更好的傳輸車聯(lián)網(wǎng)混合業(yè)務(wù)。
[Abstract]:With the development of society and the improvement of economic level, the number of motor vehicles, especially the number of private cars, has increased greatly. The increase of the number of cars has brought a lot of problems. Traffic jams and road safety problems are especially prominent among them, so researchers put forward intelligent transportation system to deal with these problems. Car networking is an important part of intelligent transportation system. Information exchange. Improving road traffic safety; It can also provide Internet access for passengers. To increase the fun of riding. At present, the communication technology of car networking mainly includes the WAVE/802.11p protocol family, which is formulated by IEEE. It is in the vehicle wireless communication system. The protocol is widely concerned by researchers because of its representativeness, and the research of many vehicle networking communication systems is based on the protocol. First of all, this paper briefly introduces the current research and development of vehicle networking. The media access control of WAVE protocol is introduced in detail. Layer design and vehicle networking MAC layer design problems. Then this paper introduces the performance of the vehicle networking hybrid business simulation system analysis and design. Next. Combined with the analysis of existing network traffic, this paper defines the models of hybrid services and various services in vehicle networking. Then, this paper investigates the MAC performance of IEEE802.11p under a given hybrid service. That is, the existing protocol for the hybrid service support ability, and for the IEEE802.11p for the hybrid service support capacity is insufficient. A new MAC layer improvement scheme based on distributed time division multiple access (DTAMA) technology is proposed, which is verified by the simulation platform of vehicle networking in this paper. The performance of CFR MAC proposed in this paper is better than that of MAC mechanism of IEEE802.11p.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U495

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本文編號：1448991