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Time synchronization method, device and system for optical fiber line termination equipment

An optical fiber line termination and time synchronization technology, applied in the field of communications, can solve problems such as inflexibility, poor system time accuracy, and difficult system time maintenance, etc., and achieve the effects of improving clock accuracy, solving poor accuracy, and ensuring reliability.

Inactive Publication Date: 2014-12-17
TOPVISION TECH CO LTD
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Problems solved by technology

This method of system time synchronization belongs to the method of local crystal oscillator synchronization clock. The system time synchronized by this method has the disadvantages of poor accuracy and inflexibility, and it cannot be synchronized with an external standard clock source. In the existing network where there are multiple OLT devices It is difficult to maintain the system time in the environment
[0003] Aiming at the problem of poor accuracy and inflexibility of the system time synchronization method in related technologies, no effective solution has been proposed so far

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  • Time synchronization method, device and system for optical fiber line termination equipment
  • Time synchronization method, device and system for optical fiber line termination equipment
  • Time synchronization method, device and system for optical fiber line termination equipment

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Embodiment Construction

[0024] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0025] The embodiment of the present invention mainly provides a flexible time synchronization method and system. Through this embodiment, the OLT device can obtain the system time by obtaining the actual standard clock source from the standard time server on the existing network through the main control board, and keep the same Time consistency of other devices in the network, and then synchronize the system time to other boards in the OLT device in real time, so that standard time stamps can be provided for services such as ONU online.

[0026] figure 1 It is a flowchart of a time synchronization method for optical fiber line terminal equipment according to an embodiment of the present invention, ...

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Abstract

The present invention discloses time synchronization method, device and system for optical fiber line termination equipment, wherein the method comprises: in a predetermined period, a main control panel of optical fiber line termination (OLT) equipment acquires an external standard time from an external standard time server via a simple network time protocol (SNTP); the main control panel synchronizes the external standard time into a system time of the OLT equipment; and the main control panel broadcasts the system time to a line card of the OLT equipment via the SNTP protocol. The present invention achieves the effects for improving clock accuracy and ensuring reliability of services having higher requirements to time accuracy.

Description

technical field [0001] The present invention relates to the communication field, in particular to a time synchronization method, device and system for optical fiber line terminal equipment. Background technique [0002] At present, the method of synchronizing the system time of an Optical Line Terminal (OLT) is: when powering on the device, the operator configures the main The system time of the board is synchronized to each online board. This method of system time synchronization belongs to the method of local crystal oscillator synchronization clock. The system time synchronized by this method has the disadvantages of poor accuracy and inflexibility, and it cannot be synchronized with an external standard clock source. In the existing network where there are multiple OLT devices It is difficult to maintain the system time in the environment. [0003] Aiming at the problem of poor accuracy and inflexibility of the system time synchronization method in the related art, no ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00
Inventor 郑喜军
Owner TOPVISION TECH CO LTD
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