【摘要】：如今伴隨著移動通信技術(shù)的快速發(fā)展,移動通信中對頻率資源的需求不斷提升。針對于頻率資源有限的問題,TD-LTE技術(shù)具有其他技術(shù)無法比擬的優(yōu)勢。TD-LTE技術(shù)具有非常高的頻率利用率,相比HSPA等3G技術(shù)的3倍以上。TD-LTE技術(shù)在頻率利用效率、速率、時延等方面具有獨特的優(yōu)勢,可以給人們提供豐富多樣的服務(wù),在一定程度之上推動了移動產(chǎn)業(yè)的發(fā)展。由于TD-LTE無線網(wǎng)絡(luò)規(guī)劃與2G、3G網(wǎng)絡(luò)的規(guī)劃具有一定的相似性,但同時也有很多不同點。本文首先對TD-LTE的系統(tǒng)模型和物理層等相關(guān)技術(shù)進行基本分析,相關(guān)技術(shù)包括包括TD-LTE物理層技術(shù)、MIMO技術(shù)、OFDM技術(shù)。在模型之上結(jié)合無線網(wǎng)絡(luò)的規(guī)劃原則分析TD-LTE系統(tǒng)的無線網(wǎng)絡(luò)覆蓋和容量。從鏈路預(yù)算和容量指標等方面分析了TD-LTE網(wǎng)絡(luò)規(guī)劃方面的特點和評估標準,重點分析了無線接入網(wǎng)絡(luò)的參數(shù),如范圍、容量和地址。同時本文從無線網(wǎng)絡(luò)站地選擇方面分析了TD-LTE系統(tǒng)的站選原則和規(guī)劃模型。針對TD-LTE系統(tǒng)無線網(wǎng)絡(luò)的覆蓋存在的問題,本文提出了RF優(yōu)化流程,以哈爾濱市城區(qū)為例進行實地采樣與分析,結(jié)果表明,加入RF優(yōu)化大大提高了市區(qū)TD-LTE網(wǎng)絡(luò)的連續(xù)覆蓋效果。針對RF優(yōu)化流程無法解決的覆蓋不足問題,本文再次提出了無線站點規(guī)劃方案,基于U-Net軟件仿真結(jié)果表明,合理新增站點有效的提升了原弱覆蓋區(qū)域的覆蓋效果。
[Abstract]:With the rapid development of mobile communication technology, the demand for frequency resources in mobile communication is increasing. To solve the problem of limited frequency resources, TD-LTE technology has more advantages than other technologies. TD-LTE technology has a very high frequency utilization ratio. Compared with 3G technology such as HSPA, TD-LTE technology has more than three times the efficiency and rate of frequency utilization. Delay and other aspects have unique advantages, can provide people with a variety of services, to a certain extent, promote the development of the mobile industry. Because of the similarity between TD-LTE wireless network planning and 2GN 3G network planning, there are many differences at the same time. In this paper, the system model and physical layer of TD-LTE are analyzed. The related technologies include TD-LTE physical layer and TD-LTE. The wireless network coverage and capacity of TD-LTE system are analyzed based on the wireless network planning principle. The characteristics and evaluation criteria of TD-LTE network planning are analyzed from the aspects of link budget and capacity index, and the parameters of wireless access network, such as range, capacity and address, are emphatically analyzed. At the same time, this paper analyzes the TD-LTE system station selection principles and planning model from the wireless network site selection. Aiming at the problem of wireless network coverage in TD-LTE system, this paper puts forward the RF optimization flow, taking Harbin urban area as an example to sample and analyze on the spot. The results show that the continuous coverage effect of urban TD-LTE network is greatly improved by adding RF optimization. Aiming at the insufficient coverage problem which can not be solved by RF optimization process, this paper proposes a wireless site planning scheme again. The simulation results based on U-Net software show that the new site can effectively improve the coverage effect of the original weak coverage area.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN929.5

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