基于TD-LTE参考信号仿真结果的基站电磁安全性分析  

Electromagnetic security analysis of base station based on simulation results of TD-LTE reference signal

作　　者：赵吉庆 周文颖 Zhao Jiqing;Zhou Wenying(Key Laboratory of Opto-Electronic Technology and Intelligent Control Ministry of Education,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China)

机构地区：[1]兰州交通大学光电技术与智能控制教育部重点实验室,甘肃兰州730070

出　　处：《环境与发展》2023年第6期74-80,共7页Environment & Development

基　　金：国家自然基金(62161017,61701208),甘肃省自然科学基金(21JR7RA283)。

摘　　要：为了简化TD-LTE基站(工作频率为1885~1905 MHz)电磁环境的安全性评估过程,本文首先提出了基于射线跟踪的建模方法,仿真了TD-LTE基站的参考信号(RS)强度,并通过基站RS接收功率的实地测量结果对仿真结果进行验证,以证明本论文所提出的建模方法的可靠性。其次,提出基于运用RS信号强度仿真结果进行基站电磁环境电场强度的计算方法,根据仿真结果进一步结合基站配置参数、指标和链路损耗值,计算出基站主辐射方向上不同位置观测点处的电场强度。计算结果表明:当资源利用率到达最大值时,TD-LTE基站天线主辐射方向上的电场强度为0.008~0.29 V/m,该值分别低于ICNIRP和国标GB8702-2014公众暴露控制限值207倍和41倍以上,表明了该TD-LTE基站电磁环境的安全性。In order to simplify the safety assessment process of the electromagnetic environment of TD-LTE base stations,whose operating frequency band is from 1885 to1905 MHz.this paper first proposes a modeling method based on ray tracing,simulates the reference signal(RS)strength of TD-LTE base stations,and verifies the simulation results through on-site measurement of the received power of the RS base station,in order to prove the reliability of the model⁃ing method proposed in this paper.Secondly,the calculation method for the electric field intensity of the electromagnet⁃ic environment of the base station based on the simulation results of RS signal strength was proposed.According to the base station configuration parameters,indexes and link loss values,the electric field intensity in the antenna main radiation direction at different locations is further calculated.The calculated results show that the electric field intensity in the antenna main radiation direction is 0.008~0.29 V/m,when the resource utilization reaches the maximum.These values are 207 times and 41 times lower than the public exposure control limits of ICNIRP and GB8702-2014,respec⁃tively,indicating the safety of the TD-LTE base station electromagnetic environment.

关 键 词：TD-LTE基站信号 射线跟踪算法 电磁环境 

分 类 号：X837[环境科学与工程—环境工程]