本文選題：高速鐵路 + EVDO��； 參考：《大連理工大學(xué)》2016年碩士論文

【摘要】：近些年來(lái)鐵路速度大幅提升,中國(guó)進(jìn)入了高鐵時(shí)代,高鐵作為一種新型的交通工具,其快速、廉價(jià)與便捷的特點(diǎn)深深的吸引了許多用戶,乘坐高鐵出行漸漸成為越來(lái)越多用戶的第一選擇。哈大高鐵是國(guó)家骨干高速鐵路網(wǎng)絡(luò)的重要組成部分,全長(zhǎng)921公里,設(shè)計(jì)時(shí)速350公里,跨越東北三省四大城市,線路位于遼寧境內(nèi),全長(zhǎng)達(dá)到553公里。大連境內(nèi)線路總長(zhǎng)113公里,設(shè)有大連、大連北、普蘭店西、瓦房店4個(gè)停車站,九里莊、臺(tái)山、三十里堡明洞、小山屯、筆架山、老虎屯共計(jì)6條總長(zhǎng)度為6.7公里隧道。哈大高鐵線路匯集了多類的場(chǎng)景,如隧道、市區(qū)與郊縣交界、山區(qū)、農(nóng)村空曠場(chǎng)景等等,用戶感知問(wèn)題涉及的連續(xù)覆蓋、弱覆蓋、系統(tǒng)間操作問(wèn)題的優(yōu)化較為困難；同時(shí)哈大高鐵時(shí)速較高,在高鐵場(chǎng)景研究中也涉及普通鐵路的類似問(wèn)題,如多普勒效應(yīng)的影響分析、快衰落問(wèn)題、車體穿透損耗問(wèn)題、終端高速移動(dòng)問(wèn)題、高速行駛中連續(xù)覆蓋的保持問(wèn)題等等,這大大增加了移動(dòng)網(wǎng)絡(luò)覆蓋優(yōu)化的難度,在這樣的情況下,也對(duì)以往的列車高速運(yùn)行狀態(tài)下無(wú)線網(wǎng)絡(luò)的優(yōu)化方案提出了挑戰(zhàn)。本文主要研究了哈大高鐵大連段中國(guó)電信CDMA無(wú)線網(wǎng)絡(luò)覆蓋優(yōu)化問(wèn)題,基于高鐵的高時(shí)速、密封性強(qiáng)導(dǎo)致信號(hào)穿透性差、邊緣用戶感知、切換帶設(shè)置等特異性,分析和論證了多普勒頻移、快衰落、車體穿透損耗以及終端高速移動(dòng)等阻礙無(wú)線傳播的物理現(xiàn)象,提出了新的高鐵移動(dòng)網(wǎng)絡(luò)覆蓋的優(yōu)化策略,最終以哈大高鐵大連段為例得出一些通用的解決方案,最終提升后續(xù)的高鐵用戶感知。本文詳細(xì)介紹了高鐵移動(dòng)網(wǎng)絡(luò)覆蓋優(yōu)化的難點(diǎn),為了提升哈大高鐵大連段的EVDO的網(wǎng)絡(luò)質(zhì)量,給出了高鐵移動(dòng)網(wǎng)絡(luò)覆蓋優(yōu)化的策略,同時(shí)積累了優(yōu)化經(jīng)驗(yàn),希望經(jīng)過(guò)本次研究,在高鐵移動(dòng)網(wǎng)絡(luò)覆蓋優(yōu)化上形成一套完善的優(yōu)化思路,最終為高鐵上的3G用戶提供滿意的移動(dòng)網(wǎng)絡(luò)使用感知。同時(shí),本文還通過(guò)大連高鐵沿線的CDMA網(wǎng)絡(luò)覆蓋信號(hào)質(zhì)量的優(yōu)化后的網(wǎng)絡(luò)進(jìn)行復(fù)測(cè),對(duì)整個(gè)系統(tǒng)進(jìn)行了有效的調(diào)整,最后各項(xiàng)指標(biāo)都有了非常明顯的提升,優(yōu)化效果顯著。
[Abstract]:In recent years, the speed of the railway has greatly increased. China has entered the era of high-speed rail. As a new type of transportation, high-speed rail has attracted many users deeply because of its rapid, cheap and convenient characteristics. Travel by high-speed train has gradually become the first choice for more and more users. The high-speed railway is an important part of the national backbone high-speed railway network, with a total length of 921 km / h and a design speed of 350 km / h, spanning four cities in three provinces of northeast China. The line is located in Liaoning Province and has a total length of 553 km / h. Dalian line total 113 km, with Dalian, Dalian North, Plantan West, Wafangdian four parking stations, Jiulizhuang, Taishan, Sanshilibao Ming Dong, Xiaotun, Bijiao Hill, Tiger Tun a total of 6 total length of 6.7 km tunnels. There are many kinds of scenarios such as tunnel, the border between urban area and suburban county, mountain area, rural open area and so on. The problem of user perception involves continuous coverage, weak coverage and optimization of operational problems between systems. At the same time, the speed of high-speed railway in Harbin and Dalian is relatively high. Similar problems such as the analysis of the influence of Doppler effect, the problem of fast fading, the problem of car body penetration loss, and the problem of terminal high-speed movement are also involved in the research of high-speed railway. The maintenance of continuous coverage in high speed driving greatly increases the difficulty of mobile network coverage optimization. In this case, it also challenges the previous wireless network optimization schemes in high-speed train operation. This paper mainly studies the coverage optimization of China Telecom CDMA wireless network in Dalian section of high-speed railway. Based on the high speed of high-speed rail, the strong sealing of high-speed railway leads to poor signal penetration, edge user perception, switching band setting and so on. The physical phenomena such as Doppler frequency shift, fast fading, car body penetration loss and terminal high-speed movement are analyzed and demonstrated, and a new optimization strategy for high-speed rail mobile network coverage is proposed. Finally, take Dalian section of Harbin high-speed railway as an example to come up with some common solutions, and finally improve the user perception of high-speed rail. In order to improve the network quality of EVDO in Dalian section of high-speed railway, this paper gives the strategy of coverage optimization of high-speed rail mobile network, and accumulates the experience of optimization, and hopes to pass through this study, in order to improve the network quality of EVDO in Dalian section of high-speed railway. A set of perfect optimization ideas are formed in the coverage optimization of high-speed rail mobile network, and finally provide satisfactory mobile network usage perception for 3G users on high-speed rail. At the same time, this paper also through the CDMA network coverage signal quality optimization of Dalian high-speed rail network after re-testing, the entire system has been effectively adjusted, the last indicators have a very obvious improvement, the optimization effect is remarkable.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TN929.533

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 潘偉杰;王琦;;高速鐵路CDMA無(wú)線網(wǎng)覆蓋探討[J];移動(dòng)通信;2012年10期

2 蔡萍;張濤;陳海琦;;我國(guó)高鐵通信技術(shù)專利分析與發(fā)展趨勢(shì)[J];中國(guó)發(fā)明與專利;2011年08期

相關(guān)碩士學(xué)位論文 前1條

1 王國(guó)平;通信系統(tǒng)中多普勒頻移估計(jì)的研究[D];電子科技大學(xué);2008年

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本文編號(hào)：2019235