本文選題：TD-LTE + 無線傳播模型　； 參考：《電子科技大學》2017年碩士論文

【摘要】：隨著TD-LTE網(wǎng)絡(luò)大規(guī)模的建設(shè),目前我國移動通信網(wǎng)絡(luò)已跨入LTE時代。與2G、3G移動通信網(wǎng)絡(luò)相比,4G網(wǎng)絡(luò)采用新增的高頻段(2.6GHz)進行無線傳播,而高頻段4G網(wǎng)絡(luò)覆蓋范圍明顯低于現(xiàn)網(wǎng)2G、3G網(wǎng)絡(luò),因此傳統(tǒng)的傳播模型規(guī)劃方案已遠不能滿足4G網(wǎng)絡(luò)規(guī)劃的需求。在此背景下,TD-LTE網(wǎng)絡(luò)的規(guī)劃組網(wǎng)問題也越來越引起重視,而傳播模型是無線網(wǎng)絡(luò)規(guī)劃的重要因素之一并直接影響了網(wǎng)絡(luò)規(guī)劃的準確性。因此,為了更好的保證工程建設(shè)中投資的有效性和合理性,在網(wǎng)絡(luò)建設(shè)初期需對網(wǎng)絡(luò)網(wǎng)絡(luò)傳播模型校正,以提供更加準確的預(yù)測結(jié)果,為后續(xù)無線網(wǎng)規(guī)網(wǎng)優(yōu)工作奠定良好的基礎(chǔ)。本論文首先結(jié)合無線電磁波理論,研究和分析了無線環(huán)境中的電波傳播方式,及傳播過程中易受到各種因素影響,如用戶移動速度、傳播環(huán)境、業(yè)務(wù)類型、用戶分布等,并簡述了目前無線網(wǎng)絡(luò)規(guī)劃中常用幾種傳播模型。通過對傳播模型校正技術(shù)的分析和理解,并結(jié)合實際環(huán)境進行驗證校正方案設(shè)計,并對校正方法和校正結(jié)果進行驗證。最后通過使用專業(yè)的仿真軟件ANPOP對現(xiàn)網(wǎng)相類似場景的傳播模型進行仿真,并通過分析仿真預(yù)測數(shù)據(jù)和實際路測數(shù)據(jù)基本相吻合,校正結(jié)果基本符合實際測試環(huán)境模型。最后將校正結(jié)果應(yīng)用在實際工程上,通過仿真軟件預(yù)測數(shù)據(jù)便可準確判斷現(xiàn)網(wǎng)絡(luò)存在各種實際問題如越區(qū)覆蓋、弱覆蓋、重疊覆蓋、高干擾和速率偏低等區(qū)域。從而能夠有效地、準確地對現(xiàn)網(wǎng)網(wǎng)絡(luò)的規(guī)劃和優(yōu)化起到指導和參考的作用,及提高了后續(xù)續(xù)網(wǎng)絡(luò)優(yōu)化的效率。
[Abstract]:With the large-scale construction of TD-LTE network, China's mobile communication network has entered the era of LTE. Compared with the 2GN 3G mobile communication network, the 4G network uses a new high frequency band of 2.6GHz) for wireless transmission, and the coverage of the high-frequency 4G network is obviously lower than that of the current 2GN 3G network. Therefore, the traditional propagation model planning scheme can not meet the needs of 4G network planning. In this context, more and more attention has been paid to the planning and networking of TD-LTE networks, and the propagation model is one of the important factors of wireless network planning, which directly affects the accuracy of network planning. Therefore, in order to better guarantee the validity and rationality of the investment in the project construction, the network propagation model should be corrected in the early stage of the network construction to provide more accurate prediction results. It lays a good foundation for the following work of wireless network planning. Based on the theory of wireless electromagnetic wave, this paper studies and analyzes the radio wave propagation mode in wireless environment, and the influence of various factors, such as user moving speed, propagation environment, service type, user distribution and so on. Several propagation models commonly used in wireless network planning are also briefly described. Based on the analysis and understanding of the propagation model correction technology, and combining with the actual environment, the verification and correction scheme design is carried out, and the correction method and the correction results are verified. Finally, the propagation model of the similar scene is simulated by using the professional simulation software ANPOP, and the simulation prediction data and the actual road test data are basically consistent with the actual test environment model by analyzing the simulation prediction data and the actual road test data, and the correction results are basically in line with the actual test environment model. Finally, the correction results are applied to practical engineering, and the prediction data of simulation software can accurately judge the existing network problems such as overpass coverage, weak coverage, overlapping coverage, high interference and low rate. Thus it can effectively and accurately guide and reference the planning and optimization of existing network and improve the efficiency of subsequent continuous network optimization.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN929.5

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