發(fā)布時(shí)間：2018-12-11 21:19

【摘要】：隨著城市化的快速發(fā)展,傳統(tǒng)的城市感知方法已不能滿足人們?nèi)找嬖鲩L(zhǎng)的需求,更智能化的智慧城市是城市的發(fā)展趨勢(shì)。構(gòu)建智慧城市的基礎(chǔ)是高可靠性、高穩(wěn)定性和高覆蓋率的城市感知網(wǎng)絡(luò),該網(wǎng)絡(luò)是把人、車(chē)、路、建筑物及環(huán)境等狀態(tài)信息真正地融入到動(dòng)態(tài)城市運(yùn)行環(huán)境中來(lái),從而提升城市運(yùn)行效率和服務(wù)水平。本文對(duì)城市感知網(wǎng)絡(luò)中如何高效并可靠地進(jìn)行數(shù)據(jù)收集問(wèn)題進(jìn)行了研究。 首先對(duì)論文所涉及的城市數(shù)據(jù)收集技術(shù)進(jìn)行了分析介紹。本文中的數(shù)據(jù)收集技術(shù)按照數(shù)據(jù)傳輸?shù)倪^(guò)程分為數(shù)據(jù)采集和數(shù)據(jù)傳輸匯聚兩個(gè)階段,對(duì)數(shù)據(jù)采集技術(shù)中固定節(jié)點(diǎn)采集和移動(dòng)節(jié)點(diǎn)采集方式的特點(diǎn)及存在的問(wèn)題進(jìn)行了分析；數(shù)據(jù)傳輸方式主要包括有線傳輸及無(wú)線傳輸,包含骨干網(wǎng)與接入網(wǎng)兩種網(wǎng)絡(luò)；在數(shù)據(jù)匯聚技術(shù)部分主要介紹了基于移動(dòng)匯聚節(jié)點(diǎn)的數(shù)據(jù)匯聚方式。以上內(nèi)容為后文所描述的基于公共交通的城市感知模型提供了理論基礎(chǔ)。 分別研究分析了基于公共交通的車(chē)路協(xié)同感知技術(shù)和車(chē)路信息交互技術(shù)。在此基礎(chǔ)上提出了基于公共交通的車(chē)路協(xié)同感知模型,并進(jìn)行了詳細(xì)的分析介紹。 為實(shí)現(xiàn)高效并可靠的城市感知數(shù)據(jù)收集,本文基于公共交通的城市感知模型,提出了采用SDMA技術(shù)中線性解相關(guān)技術(shù)的城市感知數(shù)據(jù)收集方案。目的是減少城市感知網(wǎng)絡(luò)的能量消耗,縮短數(shù)據(jù)傳輸時(shí)間,提高網(wǎng)絡(luò)性能及傳輸效率。通過(guò)仿真驗(yàn)證與結(jié)果分析,驗(yàn)證了該方案可以實(shí)現(xiàn)更加高效地進(jìn)行城市數(shù)據(jù)收集。
[Abstract]:With the rapid development of urbanization, the traditional urban perception method can not meet the increasing needs of people, more intelligent city is the development trend of the city. The foundation of a smart city is a city perception network with high reliability, high stability and high coverage. The network is a real integration of people, cars, roads, buildings and environment into the dynamic urban environment. In order to improve the efficiency of urban operation and service level. This paper studies how to collect data efficiently and reliably in urban perceptual network. Firstly, the urban data collection technology involved in this paper is analyzed and introduced. The data collection technology in this paper is divided into two stages according to the process of data transmission: data acquisition and data transmission convergence. The characteristics and problems of fixed node acquisition and mobile node acquisition in data acquisition technology are analyzed. The data transmission mode mainly includes wired transmission and wireless transmission, including backbone network and access network. In the part of data convergence technology, the data convergence mode based on mobile convergence node is mainly introduced. The above provides a theoretical basis for the urban perception model based on public transport described later. This paper studies and analyzes the vehicle-road cooperative sensing technology and the vehicle-road information interaction technology based on public transportation. On the basis of this, the model of vehicle-road cooperative perception based on public transportation is proposed and analyzed in detail. In order to achieve efficient and reliable urban perceptual data collection, based on the urban perception model of public transport, this paper proposes a method of urban perceptual data collection based on linear decoupling in SDMA technology. The purpose of this paper is to reduce the energy consumption, shorten the time of data transmission, and improve the network performance and transmission efficiency. Through simulation and result analysis, it is verified that this scheme can collect urban data more efficiently.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U495;TP274.2

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本文編號(hào)：2373237