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Time synchronization method, device and system

A time synchronization and time technology, applied in time division multiplexing systems, electrical components, multiplexing communications, etc., can solve problems such as the requirement of high-precision time synchronization that cannot be applied

Active Publication Date: 2016-08-31
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as applications have higher and higher requirements for time precision, the existing technology has been unable to meet the requirements of high-precision time synchronization

Method used

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  • Time synchronization method, device and system
  • Time synchronization method, device and system
  • Time synchronization method, device and system

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0034] The inventor of this case found through research on the existing time synchronization scheme that the impact of the time consumed by data transmission in the network is ignored in the existing time synchronization scheme, resulting in low accuracy of time synchronization. With the development of terminals and applications, the requirements for time synchronization accuracy are getting higher and higher, and the existing time synchronization solutions cannot meet the current hi...

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Abstract

The application discloses a time synchronization method, a time synchronization device and a time synchronization system. The method comprises the following steps: sending a time synchronization request to target equipment, receiving a response data package returned by the target equipment and containing a transmitting timestamp, determining transmission time spent from sending the time synchronization request to receiving the data package, determining a transmission time threshold value according to a preset time error scope and expected probability falling into the time error scope, and judging whether the transmission time is shorter than the transmission time threshold value, and if the transmission time is shorter than the transmission time threshold value, correcting the time of the synchronization equipment according to the transmission time and the sending timestamp of the response data package. The application records the influence of transmission time, so that the finally corrected time of the synchronization equipment is more accurate.

Description

technical field [0001] The present application relates to the technical field of time synchronization, and more specifically, to a time synchronization method, device and system. Background technique [0002] Time synchronization can also be called "clock alignment", that is, to align the clocks of each device in the system with the standard clock set in the system. [0003] Time synchronization has a wide range of applications, and it is common that the application client needs to perform time synchronization with the application server. When performing time synchronization in the prior art, the application client initiates a time synchronization request to the application server. When the application server receives the request, it returns the current time of the application server as feedback information to the application client, and the application client sends the current time in the feedback information. The time is "clocked" as standard time. [0004] Since the tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0638H04J3/0685
Inventor 莫思明杨颖
Owner TENCENT TECH (SHENZHEN) CO LTD
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