TD系统规划仿真的演进与方法研究

发布时间：2018-11-05 13:46

【摘要】：移动通信中的网络规划仿真是运营商在进行网络建设前评估网络规划方案的重要依据,其原理是基于地理信息系统、信号传播模型以及规划工程参数进行网络的覆盖预测、资源分配以及评估网络容量和性能,并根据仿真的结果对工程参数进行优化,最终目的是使整个网络达到“覆盖”、“容量”和“干扰”三者的和谐统一。同时,规划仿真对于网络建成后的优化以及补盲具有宏观的指导作用。本文首先以TD-SCDMA规划仿真为例,说明了规划仿真的基本要求和流程以及仿真方法。其次,本文介绍了TD-HSDPA规划仿真的方法,从本质来看,基于共享信道的调度机制是TD-HSDPA规划仿真的最重要特征。之后,本文根据技术的发展演进,重点分析论述了TD-LTE规划仿真的流程和方法,并针对蒙特卡罗仿真的调度机制提出了可行的实现方法:一种用户排序方法和一种仿真收敛机制,这两项研究目前正在中国移动内部的规划仿真工具中正在逐步实现。最后,本文对比了规划仿真和现网实际测试的结果,讨论分析了规划仿真的准确性。本文针对规划仿真所提出的一种用户优先级排序算法,一种收敛机制方法具有一定的工程指导意义。另外,本文对提高规划仿真准确性等方面的研究探讨,具有较强的实用功能。
[Abstract]:The network planning simulation in mobile communication is an important basis for operators to evaluate the network planning scheme before the network construction. Its principle is based on geographic information system (GIS), signal transmission model and planning engineering parameters to predict the coverage of the network. Resource allocation and evaluation of network capacity and performance, and optimization of engineering parameters according to the simulation results, the ultimate goal is to make the whole network "coverage", "capacity" and "interference" harmonious unity. At the same time, planning simulation plays a macro-guiding role in network optimization and blind compensation. In this paper, TD-SCDMA programming simulation is taken as an example to illustrate the basic requirements, flow chart and simulation method of planning simulation. Secondly, this paper introduces the method of TD-HSDPA planning simulation. In essence, the scheduling mechanism based on shared channel is the most important feature of TD-HSDPA planning simulation. Then, according to the development and evolution of technology, this paper analyzes and discusses the flow and method of TD-LTE planning simulation. A feasible implementation method is proposed for the scheduling mechanism of Monte Carlo simulation: a user ordering method and a simulation convergence mechanism. These two studies are being implemented step by step in the planning simulation tools of China Mobile. Finally, this paper compares the results of the planning simulation with the actual test results, and discusses the accuracy of the planning simulation. In this paper, we propose a user priority ranking algorithm for planning simulation, and a convergence mechanism method has a certain significance of engineering guidance. In addition, this paper has a strong practical function to improve the accuracy of planning simulation.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

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