本文選題：TD-LTE系統(tǒng)　切入點(diǎn)：無線網(wǎng)絡(luò)規(guī)劃　出處：《北京郵電大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著無線移動(dòng)通信技術(shù)迅速發(fā)展,尤其是隨著當(dāng)前各種新型設(shè)備和服務(wù)的創(chuàng)新與發(fā)展,人們對數(shù)據(jù)速率和系統(tǒng)容量的需求越來越高,急需加快下一代移動(dòng)通信網(wǎng)絡(luò)的建設(shè)步伐。TD-LTE作為我國自主知識產(chǎn)權(quán)的4G標(biāo)準(zhǔn),必將在此網(wǎng)絡(luò)演進(jìn)大潮中,發(fā)揮重要的作用。本文的主旨即針對不同場景的特點(diǎn),研究如何利用不同的頻段來部署最高效的TD-LTE網(wǎng)絡(luò),既能解決覆蓋需求,又能滿足熱點(diǎn)地區(qū)高容量的要求。 首先,本文介紹了TD-LTE系統(tǒng)的發(fā)展背景和頻譜使用現(xiàn)狀,說明TD-LTE開展多頻段多層次網(wǎng)絡(luò)部署研究和規(guī)劃的必要性。然后對TD-LTE的主要關(guān)鍵技術(shù)、網(wǎng)絡(luò)規(guī)劃方法流程以及系統(tǒng)模擬仿真驗(yàn)證工具做了系統(tǒng)的介紹,以輔助后續(xù)研究和驗(yàn)證工作的展開 其次,本文針對TD-LTE系統(tǒng)在不同場景下不同頻段的覆蓋性能展開研究。利用之前介紹的網(wǎng)絡(luò)規(guī)劃方法,選擇密集城區(qū)、城區(qū)、郊區(qū)、農(nóng)村四種典型場景,針對中移動(dòng)的F頻段(1880-1920MHz)、E頻段(2300-2400MHz、其中2320-2370MHz已經(jīng)分配)、D頻段(2500-2690MHz)、以及廣電持有的700MHz“數(shù)字紅利”頻段(698-806MHz),根據(jù)各場景下不同的性能指標(biāo)要求,配置系統(tǒng)參數(shù),選擇適當(dāng)?shù)膫鬏敺桨?進(jìn)行鏈路預(yù)算,完成覆蓋估算。另外,本文進(jìn)行了不同場景下各頻段覆蓋性能的優(yōu)劣勢比較。 再次,為了滿足人們?nèi)找嬖黾拥臄?shù)據(jù)速率和系統(tǒng)容量需求,本文選擇了高業(yè)務(wù)量需求的密集城區(qū)作為研究場景,先分析了不同頻段在此場景下的性能差異,再分別研究了宏站密集部署和多層網(wǎng)絡(luò)部署這兩種網(wǎng)絡(luò)擴(kuò)容方案對系統(tǒng)容量性能的提升。然后進(jìn)行了大量的仿真驗(yàn)證,完成比較分析。最后結(jié)合覆蓋、容量兩個(gè)方面,分析比較了多個(gè)研究頻段下的系統(tǒng)性能,給出了各頻段組網(wǎng)的建議。 最后,對全文工作進(jìn)行總結(jié),指出未來研究方向和產(chǎn)業(yè)前景。
[Abstract]:With the rapid development of wireless mobile communication technology, especially with the innovation and development of various new devices and services, the demand for data rate and system capacity is increasing. It is urgent to speed up the construction of the next generation mobile communication network. TD-LTE, as the 4G standard of China's own intellectual property rights, will play an important role in the evolution of the network. This paper studies how to deploy the most efficient TD-LTE network in different frequency bands, which can not only solve the coverage requirements, but also meet the requirements of high capacity in hot spots. First of all, this paper introduces the background of TD-LTE system and the current situation of spectrum utilization, and explains the necessity of research and planning of multi-band and multi-level network deployment in TD-LTE. Then, the main key technologies of TD-LTE are discussed. The flow of network planning method and the system simulation and verification tools are introduced systematically to assist the subsequent research and verification work. Secondly, this paper studies the coverage performance of TD-LTE system in different frequency bands under different scenarios. By using the network planning method introduced before, we choose four typical scenarios: dense urban, urban, suburban and rural. According to the F band of China Mobile (1880-1920MHz / E) band 2300-2400MHz, of which 2320-2370MHz has been allocated to the D band (2500-2690MHz), as well as the 700MHz "digital dividend" band held by radio and television, the band 698-806MHzz. according to the different performance requirements of each scenario, the system parameters are configured and the appropriate transmission scheme is selected. The link budget is used to estimate the coverage. In addition, the advantages and disadvantages of coverage performance in different scenarios are compared. Thirdly, in order to meet the increasing demand of data rate and system capacity, this paper chooses the dense urban area with high traffic requirements as the research scene, and analyzes the performance differences of different frequency bands in this scenario. Then, this paper studies the enhancement of system capacity by two network expansion schemes: intensive deployment of macro stations and multi-layer network deployment. Then, a large number of simulations are carried out to complete the comparative analysis. Finally, two aspects of coverage and capacity are combined. This paper analyzes and compares the system performance of several research bands, and gives some suggestions for constructing network in each frequency band. Finally, the paper summarizes the work, pointing out the future research direction and industrial prospects.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.53

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