基于TD-LTE蜂窝网络的覆盖规划及性能研究

发布时间：2018-01-05 08:04

本文关键词：基于TD-LTE蜂窝网络的覆盖规划及性能研究　出处：《宁夏大学》2014年硕士论文　论文类型：学位论文

【摘要】：LTB的全称是Long Time Evolution,我国在LTE的技术标准下,制定了TD-LTE无线网络标准。2013年年底,TD-LTE正式投入商用运营,在这样一个大的市场背景之下,大量TD-LTE网络规划建设工程正紧锣密鼓地展开,网络的规划和优化日趋成为电信运营商们关注的热点。如何在满足工程指标的前提下,达到区内最大面积的覆盖,并且在有限的频谱和带宽资源下引入OFDM技术提高系统利用率,减少系统内或者系统间的干扰,并降低设备成本,成为亟待解决的课题。本文基于TD-LTE无线网络,主要研究蜂窝网络的覆盖规划。第一部分首先介绍了TD-LTE的基本架构与原理、OFDM、MIMO等关键技术,并与FDD系统比较了各自的共性与个性,为后面的TD-LTE无线网络覆盖规划做了一个理论铺垫。第二部分根据TD-LTE无线网络的各种特点,阐述了基于无线网络覆盖的基本规划流程、方法和需要用到的参数,并且简要分析了几个影响覆盖的因素。第三部分根据不同的场景和需求,建立合适的传播模型,通过链路仿真和链路预算得出覆盖所需的规模参数。根据上述的步骤,第四部分使用Atoll仿真软件对覆盖规划地区的无线网络进行仿真,并结合仿真结果分析信号覆盖的质量与性能参数,比如RSRP和SINR等。仿真分析后,首先从编码方式,邻区干扰等因素入手分析并对比造成无线网络覆盖性能差异的各参数,然后通过对天线角度和功率等参数的调整与对比优化网络的覆盖质量,最终实现规划总目标。仿真结果对于TD-LTE无线网络规划有一定的指导意义,对各参数的分析也能够在无线网络优化过程中起到参考作用。
[Abstract]:LTB is the abbreviation of Long Time Evolution, China's technical standards in LTE, developed a TD-LTE wireless network standard of.2013 at the end of the year, TD-LTE officially put into commercial operation, under such a big market background, a large number of TD-LTE network planning and construction project planning and optimization of wildly beating gongs and drums to start the network increasingly become the focus of telecom operators taking attention. How to meet the engineering requirements, the maximum area within the area of coverage, and the introduction of OFDM technology in the limited spectrum and bandwidth resources to improve system utilization, reduce the interference of the system or systems, and reduce the cost of equipment, become the urgent task.
In this paper, based on the TD-LTE wireless network coverage planning focuses on cellular networks. The first part introduces the basic structure and principle of TD-LTE, OFDM, MIMO and other key technologies, and compares the commonness and individuality of their own with the FDD system, TD-LTE wireless network coverage planning behind a theoretical groundwork for the second part according to the various. The characteristics of TD-LTE wireless network, expounds the basic planning process of wireless network coverage based on the methods and parameters needed, and a brief analysis of the factors affecting the coverage. The third part according to the different scenarios and requirements, the establishment of appropriate propagation model, the scale parameter coverage required by simulation. According to the link and link budget the above steps, the fourth part uses Atoll software to simulate wireless network coverage planning area, combined with the quality of signal coverage analysis of simulation results And the performance parameters, such as RSRP and SINR. After simulation analysis, first of all from the encoding, adjacent area interference and other factors are analyzed and compared by the parameters of the wireless network coverage performance differences, and then through the adjustment of antenna angle and power parameters compared with the optimization of the network coverage quality, and ultimately achieve planning overall goal.
The simulation results have some guiding significance for TD-LTE wireless network planning, and the analysis of each parameter can also play a reference role in the process of wireless network optimization.

【学位授予单位】：宁夏大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

【参考文献】