基于Atoll的GSM-R无线场强覆盖仿真研究

Research on Atoll-based GSM-R Wireless Field Coverage Simulation

铁路沿线的电磁环境日趋复杂,无线网络场强分布示意图已经成为各路局向北京铁路通信技术中心报审网络数据申请的必要材料。然而,目前主要的无线网络规划软件均未对铁路数字移动通信系统(GSM-R)仿真提供直接支持,无线网络场强分布示意图的制作存在一定的难度。本文将以GSM-R的理论特性为依据,通过论述Atoll软件中的三维电子地图模型信息导入、GSM-R网络参数配置、无线基站仿真参数设置、特殊区段无线仿真处理等关键性问题,提出一种GSM-R无线场强覆盖仿真方法。最后,结合国内某条高速客运专线的无线网络场强分布仿真结果,说明本文方法的合理性,并且验证该线路的无线网络设计方案具备理论可行性。

As the electromagnetic environment along the railway is becoming more and more complicated,the wireless field coverage map has become a necessary part of the materials in the network data application submitted to Beijing Railway Communication Technology Center. However, the current wireless network planning software fails to provide direct support to the simulation of Global System for Mobile Communications-Railway（ GSM-R）,making it difficult to produce a wireless field coverage map.Based on the theoretical characteristics of GSM-R system,such key issues in Atoll are discussed as three-dimensional electronic map model import,GSM-R network parameter configuration,base station simulation parameters configuration and simulation processing of special section wireless,and a simulation method with GSM-R field coverage map is proposed. Eventually,with the simulation results from one domestic high-speed railway line for passenger traffic,the rationality of the proposed method is explained,and the theoretical feasibility of the design scheme is verified.