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TIME SYNCHRONIZATION ERROR COMPENSATION METHOD FOR MULTI-HOP WIRELESS BACKHAUL NETWORK BASED ON PTP
Alternative Title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)
Department工业控制网络与系统研究室
Rights HolderSHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES
Country美国
Subtype发明
Status有权
Abstract

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.

description.patentprioritydatacn201510988867.7 20151224
PCT Attributes
Application Date2016-01-14
2017-12-21
Date Available2018-08-21
Application NumberUS201615525687
Open (Notice) NumberUS2017366287A1
Language英语
Contribution Rank1
Document Type专利
Identifierhttp://ir.sia.cn/handle/173321/21447
Collection工业控制网络与系统研究室
AffiliationSHENYANG INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES
Recommended Citation
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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