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工业监测用无线网状网络低开销高精度时间同步方法
Alternative TitleWireless meshed network low-spending high-precision time synchronization process for industry monitoring
曾鹏; 于海斌; 尚志军
Department工业控制系统研究室
Rights Holder中国科学院沈阳自动化研究所
Patent Agent沈阳科苑专利商标代理有限公司
Country中国
Subtype发明
Status有权 许可备案
Abstract本发明属于无线网络通信领域,具体是用于实现无线网状网络内节点与时间基准源的高精度时间同步方法。主要技术要点是:在MAC层记录报文发送与接收的精确时戳;需要同步的接收节点收集时间源周期性发布的时间同步信标,在收到若干时间同步信标后,采用统计方法建立本地时间与时间同步信标发送节点处全局时间的关系方程,消除时钟晶振频率偏移对时间同步精度的影响;在网络运行过程中,关系方程的参数在线更新。采用本发明方法可最大程度地消除同步过程中的时间不确定性,降低同步的开销。
Other AbstractThe present invention belongs to the radio network communication field, in particular to a method for realizing the high-precision time synchronization of the radio mesh network internal node and thetime benchmarking source. The main technical points are that the accurate time stamp of emitting and receiving message is recorded on the MAC layer synchronous receiving nodes are needed for collecting the time synchronous signals issued by time source cyclically and after a plurality of time synchronous signals is received, statistic method is adopted to establish the relation equation of the overall time between the local time and time synchronous signal emitting node, the relation equation removes the effect of the frequency deviation of clock crystal vibration on the time synchronous precision the parameter of the relation equation is updated in the process of network operation. By adopting the method of the present invention, the time uncertainty in the process of synchronization is removed to the maximum and the synchronization spending is reduced.
description.patentprioritydataCN20061134134
PCT Attributes
Application Date2006-11-03
2008-05-07
Date Available2010-02-03
Application NumberCN200610134134.8
Open (Notice) NumberCN101174939A
Language中文
Contribution Rank1
Document Type专利
Identifierhttp://ir.sia.cn/handle/173321/12751
Collection工业信息学研究室_工业控制系统研究室
Affiliation中国科学院沈阳自动化研究所
Recommended Citation
GB/T 7714
曾鹏,于海斌,尚志军. 工业监测用无线网状网络低开销高精度时间同步方法[P]. 2008-05-07.
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