基于移动捎带的5G广域物联网信息传输方法研究  

Research on 5G wide-area Internet of things information transmission method based on mobile piggyback

作　　者：郭政 徐乐 张海英 邹丰光 孟维晓[1] GUO Zheng;XU Le;ZHANG Haiying;ZOU Fengguang;MENG Weixiao(School of Electronics and Information Engineering,Harbin Institute of Technology,Harbin 150001,China;China Information Communication Technologies Group Corporation·FiberHome International Technologies Co.,Ltd.,Beijing 100191,China;FiberHome Telecommunication Technologies Co.,Ltd.,Wuhan 430073,China)

机构地区：[1]哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨150001 [2]中国信息通信科技集团有限公司烽火国际技术有限公司,北京100191 [3]烽火通信科技股份有限公司,湖北武汉430073

出　　处：《电信科学》2024年第3期15-28,共14页Telecommunications Science

基　　金：国家重点研发计划项目(No.2020YFE0205800);黑龙省重点研发计划项目(No.JD22A001)。

摘　　要：针对偏远地区低速率、时延非敏感业务的入网问题,提出了一种基于移动捎带的广域物联网信息传输方法。利用移动载体为物联网设备提供无感接入支持,扩展了网络覆盖范围。在无基站信号覆盖区域,移动载体与传感器建立连接,获取传感器数据并存储,具备5G接入条件时,将感知信息卸载实现信息入网。提出了一种基于代价函数的数据缓存策略,提高了信息捎带效率,分析了移动捎带方案的覆盖性能,并设计了一种基于远距离无线电(long range radio,LoRa)技术的硬件实现方案。仿真结果表明,基于移动捎带的广域物联网信息传输方法能够提高物联网信息捎带效率,并将5G网络的物联网覆盖范围扩大4.98倍,实地测试验证了所提方法的有效性,移动捎带节点可以实现半径4 km的通信覆盖。To solve the network access problem of low data rate and delay-insensitive services in remote areas,a wide-area Internet of things(IoT)information transmission method based on mobile piggyback was proposed.Mobile carri‐ers were used to provide senseless access support for IoT devices and expand network coverage.In areas without base station signal coverage,the mobile carrier established a connection with the sensor,obtained sensor data and stored it.When 5G access conditions were met,the sensing information was offloaded to achieve information access to the net‐work.A data caching strategy based on cost function was proposed to improve the efficiency of information piggy‐backing.The coverage performance of the mobile piggyback scheme was analyzed and a hardware implementation scheme based on LoRa was designed.Simulation results show that the wide-area IoT information transmission method based on mobile piggyback can improve the efficiency of IoT information piggyback,and expand the cover‐age area of 5G network by 4.98 times.Field tests verify the effectiveness of the proposed method,and mobile piggy‐back nodes can achieve communication coverage with a radius of 4 km.

关 键 词：物联网 业务分析 缓存策略 中继节点 

分 类 号：TN925[电子电信—通信与信息系统]