基于测量的典型工业物联网场景毫米波信道特性分析  

Measurement Based Analysis on Millimeter Wave Channel Characteristics in Typical Industrial IoT Scenarios

作　　者：王丽红 朱春华 杨靖雅[4,5] WANG Lihong;ZHU Chunhua;YANG Jingya(Key Laboratory of Grain Information Processing and Control(Henan University of Technology),Ministry of Education,Zhengzhou 450001,China;Henan Key Laboratory of Grain Photoelectric Detection and Control,Henan University of Technology,Zhengzhou 450001,China;Henan Engineering Research Center of Grain Condition Intelligent Detection and Application,Henan University of Technology,Zhengzhou 450001,China;Henan Province High-Speed Railway Operation and Maintenance Engineering Research Center,Zhengzhou Railway Vocational&Technical College,Zhengzhou 451460,China;Beijing Engineering Research Center of High-speed Railway Broadband Mobile Communications,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]河南工业大学粮食信息处理与控制教育部重点实验室,河南郑州450001 [2]河南工业大学河南省粮食光电探测和控制重点实验室,河南郑州450001 [3]河南工业大学河南省粮情智能监测与应用工程研究中心,河南郑州450001 [4]郑州铁路职业技术学院河南省高速铁路运营维护工程研究中心,河南郑州451460 [5]北京交通大学北京市高速铁路宽带移动通信工程研究中心,北京100044

出　　处：《无线电通信技术》2024年第5期876-885,共10页Radio Communications Technology

基　　金：国家自然科学基金(62101507);河南省科技研发计划联合基金青年科学家项目(225200810112);河南工业大学创新基金支持计划专项资助(2022ZKCJ13)。

摘　　要：为更好地补充和扩展典型工业物联网(Industrial Internet of Things,IIoT)场景中毫米波频段电波传播特性的研究,并满足IIoT在连接性、可靠性、安全性、智能化和覆盖性等方面的更高需求,在26 GHz频段下,对典型IIoT场景进行了信道测量与特性分析。研究涉及的典型工业场景包括不同设备布置密度的工业密集场景和工业稀疏场景。基于实测数据,对上述两种工业环境下的信道特征参数进行了萃取,并在此基础上分析和比较了两种典型工业场景的毫米波信道特性。研究发现,由于工业密集场景存在大量金属设备会对信号产生强反射,导致其路径损耗指数小于工业稀疏场景,且莱斯K因子更小、时延扩展更大。当接收端使用相控阵天线时,通过波束跟踪可以实时调整波束方向,从而提高信号的传输效果,减小信号传播时延。对IIoT场景信道特性的准确分析将有助于理解信号在工业环境中的传播规律,预测和评估通信系统的传输可靠性,进而优化系统设计和网络规划,确保IIoT应用的高效稳定运行。To better complement and expand the research on propagation characteristics of millimeter-wave radio frequency bands in typical Industrial Internet of Things(IIoT)scenarios and meet higher demands of IIoT in terms of connectivity,reliability,security,intelligence,and coverage,channel measurement and characteristic analysis were conducted in the 26 GHz frequency band for typical IIoT scenarios.Typical industrial scenarios involved in the research include industrial dense scenarios and industrial sparse scenarios with different equipment layout densities.Channel characteristic parameters are extracted from the measured data for both industrial environments.Subsequently,the millimeter wave channel characteristics in two typical industrial scenarios are analyzed and compared.Foundation Item:National Natural Science Foundation of China(62101507);Program for Science&Technology R&D Plan Joint Fund of Henan Province(225200810112);Innovative Funds Plan of Henan University of Technology(2022ZKCJ13)The findings indicate that in industrial dense scenarios,characterized by numerous metal devices,signals experience strong reflections leading to a lower path loss exponent compared to industrial sparse scenarios,as well as a smaller Rice K factor and greater delay expansion.The utilization of phased array antennas for beam tracking at the receiver improves signal transmission efficiency and reduces propagation delay.Accurate analysis of the channel characteristics in IIoT scenarios is crucial for understanding signal propagation patterns in industrial environments,predicting and evaluating the transmission reliability of communication systems,thereby optimizing system design and network planning,and ensuring efficient and stable operation of IIoT applications.

关 键 词：工业物联网 信道特性 宽带信道测量 毫米波信道 

分 类 号：TN928[电子电信—通信与信息系统]