隧道环境下高带宽低时延视频通信技术  

High bandwidth and low delay video communication technology in tunnel environment

作　　者：张志坚 何建益 陈峻宇 徐雅惠 张培伦 ZHANG Zhijian;HE Jianyi;CHEN Junyu;XU Yahui;ZHANG Peilun(Wuxi Electric Power Supply Company,State Grid Jiangsu Electric Power Co.,Ltd.,Wuxi 214000,China)

机构地区：[1]国网江苏省电力有限公司无锡供电分公司,江苏无锡214000

出　　处：《电子设计工程》2023年第8期176-179,184,共5页Electronic Design Engineering

基　　金：国网江苏省电力有限公司科技项目资助(J2020094)。

摘　　要：针对当前使用的视频通信技术受隧道环境的影响,导致视频通信吞吐量低、平均端到端时延高的问题,提出了隧道环境下高带宽低时延视频通信技术。基于多径效应仿真隧道环境,构建信号接收数字模型,估计隧道环境下无线通信技术频率。在无人机地面站优化集成结构下,设计隧道环境下定向天线,保证信号通过多效应路径接收全部反射的信号。通过动态最小帧长均匀时隙分配协议,解决信号平均端到端时延高的问题,实现高带宽低时延视频通信。仿真实验结果表明,该技术最高吞吐量为5.6 mbit/s,最小时延为10 ms,具有良好的视频通信效果。Aiming at the problems of low video communication throughput and high average end⁃to⁃end delay caused by the influence of tunnel environment,a high bandwidth and low delay video communication technology in tunnel environment is proposed.Based on the multipath effect,the tunnel environment is simulated,the signal receiving digital model is constructed,and the frequency of wireless communication technology in the tunnel environment is estimated.Under the optimized integrated structure of UAV ground station,the directional antenna in tunnel environment is designed to ensure that the signal receives all reflected signals through multi effect path.Through the dynamic minimum frame length uniform slot allocation protocol,the problem of high average end⁃to⁃end delay of signal is solved,and the video communication with high bandwidth and low delay is realized.The simulation results show that the maximum throughput of this technology is 5.6 mbit/s and the minimum delay is 10 ms,and it has a good video communication effect.

关 键 词：隧道环境 高带宽 低时延 视频通信 吞吐量 端到端时延 

分 类 号：TN91[电子电信—通信与信息系统]