基于MQTT的物联网系统文件传输方法的实现  

Implementation of file transfer method for Internet of things system based on MQTT

作　　者：张玉杰[1] 刘丽 冯春倩 张婷婷 

机构地区：[1]陕西科技大学电气与信息工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2018年第1期154-159,共6页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅科技计划项目(2017GY-091);西安市科技计划项目(2017068CG/RC031(SXKD006))

摘　　要：针对物联网系统中设备与设备之间的文件传输需求,结合MQTT协议在物联网系统中的应用特点,提出了一种基于MQTT协议的文件传输方案,在文件拆分传输基础上增加应答、重传等机制,解决了MQTT协议在实现文件传输时硬件设备资源有限、传输过程中信道占用时间长、文件丢包等问题,实现了文件上传和下载等功能.最后通过搭建硬件平台,对文件传输的功能和可靠性进行测试,实验结果表明该文件传输方案可靠性好,适应于物联网系统中设备之间的远程文件传输.Aiming at the requirement of file transfer between equipment and equipment in Internet of things system,combined with the application characteristics of MQTT protocol in Internet of things system,a file transfer scheme based on MQTT protocol is proposed,the confirmation reply,timeout retransmission mechanism is added on the basis of file split transmission t to solves the problem during the MQTT protocol in fulfilling the file transfer that has limited resource resources,the channel takes a long time in the transmission process and packet,to achieve the file upload and download functions.Finally,the function and reliability of the file transfer are tested by setting up the hardware platform.The experimental results show that the file transfer scheme is reliable,and it is suitable for the remote file transfer between the devices in the Internet of things system.

关 键 词：物联网 文件传输 MQTT 应答确认 超时重传 

分 类 号：TP368.2[自动化与计算机技术—计算机系统结构]