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A method, device, and slave clock device for suppressing pdv noise in a packet network

A packet network and noise technology, which is applied in the field of slave clock devices to suppress PDV noise in packet networks, can solve problems such as the inability to effectively suppress PDV noise in packet networks.

Active Publication Date: 2018-01-05
STATE GRID CORP OF CHINA +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a method, device, and slave clock device for suppressing PDV noise in a packet network to solve the problem that the current suppression method for PDV noise in a packet network cannot effectively suppress PDV noise in a packet network

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  • A method, device, and slave clock device for suppressing pdv noise in a packet network
  • A method, device, and slave clock device for suppressing pdv noise in a packet network
  • A method, device, and slave clock device for suppressing pdv noise in a packet network

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Embodiment Construction

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0070] An embodiment of the present invention provides a method for suppressing PDV noise in a packet network, which is applied to such as figure 2 A shown packet network 22 comprising a plurality of slave clock devices (Super slaver for short) nodes 21; the slave clock device nodes 21, such as image 3 Shown includes PTP time signal receiving interface 301, GNSS signal receiving interface 302, PDV noise processing chip 303, phase detector 304, loop filter 30...

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Abstract

The present invention provides a method, a device and a slave clock device for suppressing PDV noise in a packet network, and relates to the technical field of packet networks. The method includes: taming the local rubidium atomic clock according to the GNSS satellite signal, determining the fixed time error of the PTP time signal receiving interface, and correcting the PTP data packet with a fixed delay error; collecting the corrected PTP data packet; One or more of the .8261 packet selection algorithms and the design parameters of each algorithm, select the destination PTP data packet; determine the synchronization stability index corresponding to one or more algorithms; judge whether the synchronization stability index satisfies the preset Threshold condition; when the synchronization stability index meets the threshold condition, the destination PTP data packet is processed for time and frequency signal recovery, and the frequency signal and PTP time signal are output to complete the deployment processing of the slave clock device node; when the synchronization stability index When the threshold condition is not met, the design parameters are dynamically adjusted, and the destination PTP data packet is returned to be reselected.

Description

technical field [0001] The invention relates to the field of packet network technology, in particular to a method, device and slave clock device for suppressing PDV noise in a packet network. Background technique [0002] At present, the PTP Precision Time Protocol (Precision Time Protocol, referred to as PTP) technology is used as an alternative to the Global Positioning System (Global Positioning System, referred to as GPS) to solve the time synchronization problem of 3G / 4G base stations, and has been used by telecom operators ( For example, China Mobile) has been piloted in the metropolitan area network; in some cities in the power system, a PTP time synchronization test network has also been established to provide high-precision time synchronization signals for the timing equipment in the substation. Although the use of PTP technology has established a time synchronization network for time transmission, and can provide sub-microsecond time synchronization signals for tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0644H04J3/0667
Inventor 吕博胡昌军汪建华常宁张军连纪文林福国周晓东刘刚李舒婷李信马跃张辉邢宁哲周则军汪洋高强滕玲陈希丁慧霞焦群黄杰马涛葛红武李伯中李伟华夏小萌白夫文唐佳王颖黄源源吴林
Owner STATE GRID CORP OF CHINA