TIME SYNCHRONIZATION ERROR COMPENSATION METHOD FOR MULTI-HOP WIRELESS BACKHAUL NETWORK BASED ON PTP

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	TIME SYNCHRONIZATION ERROR COMPENSATION METHOD FOR MULTI-HOP WIRELESS BACKHAUL NETWORK BASED ON PTP
其他题名	基于PTP协议的多跳无线回程网络时间同步误差补偿方法
	Zeng P(曾鹏); Wang ZW(王照伟); Li ZB(李志博); Li D(李栋); Wang JT(王金涛)
所属部门	工业控制网络与系统研究室
专利权人	SHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES
授权国家	美国
专利类型	发明
专利状态	公开
摘要	The present invention relates to a wireless network communication technology, and in particular to a time synchronization error compensation method for multi-hop wireless backhaul network based on PTP. Based on PTP, the present invention uses an intermediate node to count the timestamps of transceiving the PTP synchronization message Sync and the delay request message Delay_Req, detect and compensate the local forwarding time of synchronization message Sync and the delay request message Delay_Req and the link delay of transmitting the two between nodes based on the linear regression technology, thereby finally implementing asymmetric delay correction of wireless links between the master and slave nodes and completing time synchronization error compensation. The present invention uses the header of the PTP message to transmit the additional time information about the compensation time, the sending time and arrived time of the message and time correction value without modifying the existing PTP, thereby reducing the message overhead, meeting requirements of real-time and high precision of synchronization error compensation, improving the existing time synchronization precision and having strong practicality.
优先权数据	cn201510988867.7 20151224
PCT属性	是
申请日期	2016-01-14
	2017-12-21
申请号	US201615525687
公开（公告）号	US2017366287A1
语种	英语
产权排序	1
文献类型	专利
条目标识符	http://ir.sia.cn/handle/173321/21447
专题	工业控制网络与系统研究室
作者单位	SHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES
推荐引用方式 GB/T 7714	Zeng P,Wang ZW,Li ZB,et al. TIME SYNCHRONIZATION ERROR COMPENSATION METHOD FOR MULTI-HOP WIRELESS BACKHAUL NETWORK BASED ON PTP[P]. 2017-12-21.

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