基于天通卫星移动通信的物联网系统设计  

Design of IoT System Based on Tiantong Satellite Mobile Communication

作　　者：张开禾[1] 王力权[1] 王力男[1] ZHANG Kaihe;WANG Liquan;WANG Li’nan(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所

出　　处：《无线电通信技术》2019年第5期488-492,共5页Radio Communications Technology

摘　　要：针对物联网系统中负责数据和指令传输的网络层通信受到地面基础设施、区域及地形等的限制,同时在自然灾害时无法正常工作等问题,提出一种采用我国自主卫星移动通信系统作为网络层的物联网系统。目前,由于卫星系统传输时延较长,占用专用物理信道较多,卫星物联网系统容量较小,发展面临较大的压力。针对卫星通信这些特点,设计了一种基于接入网架构的专用物联网方案,实现多用户、快速数据传输。物联网终端数据通过卫星公共信道方式转发到信关站接入网,接入网中数据服务器完成鉴权后,把合法数据传送到核心网,核心网的短信中心负责数据计费和网外转发。该系统运行不会影响天通常规模式应用,目前已投入试运行。The core layer ofInternet of Things(IoT)is network layer,which is in charge of data and instructions transmission,but it is limited by ground infrastructure,area,terrain and so on,even breaks down during natural disaster.To deal with these disadvantages,an IoT system adopting our own satellite mobile communication system as the network layer is proposed.Because of the long delay of satellite transmission and the more occupation of dedicated physical channel,the capacity of satellite IoT is small and its development faces high pressure.Aiming at these characteristics of satellite communication,a private IoT scheme based on AN(Access Network)framework is designed to realize high speed data transmission of multi-user for IoT.The terminal data of IoT is forwarded to AN of gateway station in satellite public channel mode,and then the legitimate data is transferred to CN(Core Network)after the data server authentication is complete.The short message center(SMSC)of CN takes charge of data billing and forwards outside.The system doesn’t affect the normal mode application of Tiantong,and has been put into trial operation.

关 键 词：物联网 网络层 卫星移动通信 接入网架构 

分 类 号：TN927.23[电子电信—通信与信息系统]