面向TD-LTE系统多频段组网的无线网络规划方法研究和仿真验证

发布时间：2018-03-09 12:40

本文选题：TD-LTE系统　切入点：无线网络规划　出处：《北京邮电大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着无线移动通信技术迅速发展,尤其是随着当前各种新型设备和服务的创新与发展,人们对数据速率和系统容量的需求越来越高,急需加快下一代移动通信网络的建设步伐。TD-LTE作为我国自主知识产权的4G标准,必将在此网络演进大潮中,发挥重要的作用。本文的主旨即针对不同场景的特点,研究如何利用不同的频段来部署最高效的TD-LTE网络,既能解决覆盖需求,又能满足热点地区高容量的要求。首先,本文介绍了TD-LTE系统的发展背景和频谱使用现状,说明TD-LTE开展多频段多层次网络部署研究和规划的必要性。然后对TD-LTE的主要关键技术、网络规划方法流程以及系统模拟仿真验证工具做了系统的介绍,以辅助后续研究和验证工作的展开其次,本文针对TD-LTE系统在不同场景下不同频段的覆盖性能展开研究。利用之前介绍的网络规划方法,选择密集城区、城区、郊区、农村四种典型场景,针对中移动的F频段(1880-1920MHz)、E频段(2300-2400MHz、其中2320-2370MHz已经分配)、D频段(2500-2690MHz)、以及广电持有的700MHz“数字红利”频段(698-806MHz),根据各场景下不同的性能指标要求,配置系统参数,选择适当的传输方案,进行链路预算,完成覆盖估算。另外,本文进行了不同场景下各频段覆盖性能的优劣势比较。再次,为了满足人们日益增加的数据速率和系统容量需求,本文选择了高业务量需求的密集城区作为研究场景,先分析了不同频段在此场景下的性能差异,再分别研究了宏站密集部署和多层网络部署这两种网络扩容方案对系统容量性能的提升。然后进行了大量的仿真验证,完成比较分析。最后结合覆盖、容量两个方面,分析比较了多个研究频段下的系统性能,给出了各频段组网的建议。最后,对全文工作进行总结,指出未来研究方向和产业前景。
[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.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.53

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