本文選題：WAVE短消息協(xié)議　切入點：車載節(jié)點　出處：《重慶理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：交通信息物理系統(tǒng)（TCPS）作為信息物理系統(tǒng)（CPS）在交通領(lǐng)域的具體應(yīng)用，是下一代智能交通系統(tǒng)（ITS）發(fā)展的關(guān)鍵技術(shù)，具備CPS信息世界與物理世界深度融合的特點，為ITS的發(fā)展提供了新的思路和方向，受到越來越多研究機構(gòu)和學(xué)者的關(guān)注。車載節(jié)點作為TCPS系統(tǒng)中車輛獲取各項交通環(huán)境參數(shù)的重要設(shè)備，良好的通信性能是及時、準確、可靠地獲取交通信息的重要保障，同時也是保障交通系統(tǒng)安全、穩(wěn)定、高效的重要手段。因此本文把TCPS中車載節(jié)點的通信技術(shù)作為研究對象，具有重要的研究價值和社會意義。 WAVE協(xié)議作為專門應(yīng)用于交通領(lǐng)域的無線通信技術(shù)，與其他無線通信技術(shù)相比兼具了傳輸時延低、移動性支持好、通信距離遠、數(shù)據(jù)傳輸速率高等優(yōu)點，同時具備WBSS和WIBSS兩種通信模式，非常適合于交通系統(tǒng)中車-車之間、車-路邊設(shè)施之間的信息通信。本文在詳細分析了WAVE協(xié)議的基礎(chǔ)上，針對TCPS中車載節(jié)點與車載節(jié)點、車載節(jié)點與路邊設(shè)施之間WSM通信的設(shè)計與實現(xiàn)過程進行了深入研究。 首先提出了TCPS層次體系架構(gòu)，該架構(gòu)共劃分為四個部分：物理層、融合層、信息層和應(yīng)用層，簡要說明了各層的結(jié)構(gòu)和功能，并分析了TCPS的特點和關(guān)鍵技術(shù)。其次，介紹了WAVE協(xié)議的兩個重要組成協(xié)議IEEE802.11p和IEEE1609.4/3，重點分析了IEEE802.11p中定義的兩種通信模式WBSS和WIBSS、IEEE1609.4中定義的多信道訪問控制機制以及IEEE1609.3中定義的WAVE短消息協(xié)議WSMP。然后重點研究了WIBSS通信模式下OBU與OBU之間WSM通信的實現(xiàn)過程以及WBSS模式下OBU與RSU通信的實現(xiàn)過程，，并通過編程實現(xiàn)OBU與RSU之間的仿真通信，并通過NCTUns-6.0平臺仿真分析設(shè)備天線高度、車輛速度對數(shù)據(jù)丟包率的影響情況。最后，針對OBU與OBU之間信息傳輸?shù)穆酚蓡栴}提出了VP-LD算法，該算法對下一跳的選擇基于鄰居節(jié)點的方位和通信鏈路持續(xù)時間為依據(jù)，通過NCTUns-6.0平臺仿真，比較了該算法與GPSR算法的性能，仿真結(jié)果表明，本文提出的VP-LD算法比GPSR算法的性能優(yōu)越，特別是當(dāng)車輛移動速度較高時，優(yōu)越性更加明顯。
[Abstract]:As a specific application of information physics system (CPS) in the field of transportation, the transportation information physics system (TCPS) is the key technology of the development of the next generation of intelligent transportation system (its). It has the characteristics of the deep fusion of the CPS information world and the physical world. It provides new ideas and directions for the development of ITS, and attracts more and more attention of research institutions and scholars. As an important equipment for vehicles to obtain various traffic environment parameters in TCPS system, the good communication performance is timely and accurate. Reliable access to traffic information is also an important means to ensure the safety, stability and efficiency of traffic system. Therefore, this paper takes the communication technology of vehicular nodes in TCPS as the research object, which has important research value and social significance. Compared with other wireless communication technologies, WAVE protocol has the advantages of low transmission delay, good mobility support, long communication distance and high data transmission rate. At the same time, it has two communication modes of WBSS and WIBSS, which is very suitable for the information communication between vehicle and vehicle in traffic system and between vehicle and roadside facilities. Based on the detailed analysis of WAVE protocol, this paper aims at the on-board node and vehicular node in TCPS. The design and implementation of WSM communication between vehicle nodes and roadside facilities are studied. Firstly, the TCPS hierarchical architecture is proposed, which is divided into four parts: physical layer, fusion layer, information layer and application layer. The structure and function of each layer are briefly explained, and the characteristics and key technologies of TCPS are analyzed. This paper introduces two important protocols of WAVE, IEEE802.11p and IEEE 1609.4 / 3, and analyzes two communication modes defined in IEEE802.11p, WBSS and WBS IEEE 1609.4, as well as the WAVE short message protocol defined in IEEE1609.3. The realization process of WSM communication between OBU and OBU in WIBSS communication mode and OBU and RSU communication in WBSS mode are discussed. The simulation communication between OBU and RSU is realized by programming, and the influence of antenna height and vehicle speed on data packet loss rate is analyzed by NCTUns-6.0 platform. Finally, the VP-LD algorithm is proposed for the routing of information transmission between OBU and OBU. The algorithm is based on the location of neighbor node and the duration of communication link. The performance of the algorithm is compared with that of GPSR algorithm through the simulation of NCTUns-6.0 platform. The simulation results show that the proposed algorithm is based on the location of the neighbor node and the duration of the communication link. The performance of the proposed VP-LD algorithm is superior to that of the GPSR algorithm, especially when the moving speed of the vehicle is high.
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U495;U463.6

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