摘要
时间敏感网络(TSN)对在以太网上传输的时间敏感流进行确定性控制,保证了网络传输实时数据的能力。时间同步是TSN技术中的基石,保障了网络数据传输的实时性和确定性。首先对建立时钟同步生成树和选择最佳主时钟的过程进行介绍;然后对路径延迟时间计算的原理进行描述;进而重点论述了各节点中进行时间同步时的计算推导过程。最后探索了一种流量整型技术,通过一个实验展示了时间同步在TSN流量整型中的重要作用。
Time Sensitive Network(TSN)provides deterministic control over time sensitive streams transmitted over Ethernet,and ensures the ability to transmit real-time data of network.As the footing stone of TSN technology,time synchronization ensures the network data transmission is real-time and deterministic.Firstly,the process of establishment of clock synchronization spanning tree and selection of the best master clock are introduced.Then the principle of path delay time calculation is described.Further,the calculation and derivation process of time synchronization in each node is discussed emphatically.Finally,a traffic shaper technology is explored,and the important role of time synchronization in TSN traffic shaper is demonstrated through an experiment.
作者
颜晨
孙云华
陈翔
YAN Chen;SUN Yunhua;CHEN Xiang(China Key System&Integrated Circuit Co.,Ltd.,Wuxi 214072,China)
出处
《现代信息科技》
2023年第11期83-88,共6页
Modern Information Technology
关键词
时间敏感网络
时间同步
时钟同步生成树
最佳主时钟
流量整型
Time-Sensitive Network
time synchronization
clock synchronization spanning tree
best master clock
traffic shaper
