Time synchronization method and system

A time synchronization system and time synchronization technology, applied in the field of communication, can solve the problems of low time synchronization accuracy, asymmetric communication link, low network timing accuracy, etc., to improve timing accuracy and time synchronization accuracy, accurate synchronization, and reduce delay. effect of time

Active Publication Date: 2019-09-24
GUIZHOU METROLOGY & TESTING INST
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Problems solved by technology

[0013] The purpose of the present invention is to provide a time synchronization method and system to solve the problem of low network timing accuracy due to the asymmetry of communication links in the wide area network environment, resulting in low time synchronization accuracy

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Embodiment Construction

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0058] The purpose of the present invention is to provide a time synchronization method and system, which can improve network timing accuracy and time synchronization accuracy.

[0059] In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0...

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Abstract

The invention discloses a time synchronization method and system. The time synchronization method comprises the following steps of acquiring the original communication round-trip delay data, wherein the original communication round-trip delay data comprises the original round-trip delay time and the original time deviation, and the original round-trip delay time and the original time deviation are in one-to-one correspondence; fitting the original communication round-trip delay data, and determining a fitting slope and the fitted communication round-trip delay data, wherein the fitted communication round-trip delay data comprises fitted round-trip delay time and fitted time deviation; and synchronizing the local time according to the fitted communication round-trip delay data and the original communication round-trip delay data. By adopting the time synchronization method and system provided by the invention, the network time service precision and the time synchronization precision can be improved.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a time synchronization method and system. Background technique [0002] The Network Time Protocol (NTP) is a very widely used time synchronization protocol in the Internet. It was first proposed by Professor DLMills of the University of Delaware in the United States in 1985 and was designed and implemented. Its purpose is to adopt The local computer synchronizes the clock with the clock source to improve the accuracy of the local time so that different machines on the Internet can maintain a uniform and standard time, which is distributed to systems running in a variety of and extensive distributed network environments Accurate and reliable time information. [0003] Network time synchronization technology is constantly innovating. The early time synchronization technology required the establishment of a dedicated network to provide services for each system, and the cost was rela...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0667H04J3/0682
Inventor 龙波张宇胡鹏飞黄徐瑞晗韩锋王菊凤沈力杨宇红
Owner GUIZHOU METROLOGY & TESTING INST
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