针对地下室场景4.8 GHz频段传播特性研究  

Study on propagation characteristics of 4.8 GHz band for basement scenarios

作　　者：孙磊 丁茂 尹以雁 幸锋 李治文 张婧 张静怡 蒋金鸿 SUN Lei;DING Mao;YIN Yiyan;XING Feng;LI Zhiwen;ZHANG Jing;ZHANG Jingyi;JIANG Jinhong(China Mobile Communications Group Yunnan Co.,Ltd.,Kunming 650228,China;College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]中国移动通信集团云南有限公司,云南昆明650228 [2]南京邮电大学电子与光学工程学院、柔性电子(未来技术)学院,江苏南京210003

出　　处：《现代电子技术》2024年第5期23-28,共6页Modern Electronics Technique

基　　金：南京邮电大学校引进人才科研启动基金(自然科学)项目(NY222059);江苏省研究生科研与实践创新计划项目(KYCX21_0718)基金

摘　　要：地下室无线网络信号覆盖一直都是关系到人们感知通信的重要民生事件,但由于其空间封闭,使得室外信号难以穿透,严重影响了运营商的服务质量。文中基于入射及反弹射线法/镜像法对典型地下室环境进行建模仿真;研究了4.8 GHz频段下有车体存在和无车体存在时的电波传播特性并对数据进行处理;计算出不同距离的发射机与接收机对应的接收功率和路径损耗,并与1.9 GHz频段相应参数进行了对比,为优化网络覆盖提供了理论依据。通过研究表明,有车体存在时接收功率更大一些,5G频段相比4G频段接收功率更小一些。Basement wireless network signal coverage has always been an important livelihood event related to people's perception of communication.However,due to its closed space,it is difficult for outdoor signals to penetrate,which seriously affects the service quality of operators.In this paper,the typical basement environment is modeled and simulated based on the incident and bounce ray method/mirror method.The radio wave propagation characteristics of the presence of vehicle body and the absence of vehicle body in the 4.8 GHz band are studied and the data are processed,and the corresponding receiving power and path loss of transmitter and receiver at different distances are calculated and contrasted with the corresponding parameters of the 1.9 GHz band,which provides a theoretical basis for optimizing network coverage.This research has shown that the receiving power is greater when there is a vehicle body,and the receiving power at 5G frequency band is smaller than that at 4G frequency band.

关 键 词：地下室 接收功率 路径损耗 网络覆盖 4G 5G 不同频段 

分 类 号：TN929.5-34[电子电信—通信与信息系统]