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.
Research on 5G wide-area Internet of things information transmission method based on mobile piggyback
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.
Internet of thingsservice analysiscaching strategyrelay node
万方数据
维普
