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Method and system for adjusting network time

A technology of network time and time, applied in the field of communication, can solve the problems of inconvenient maintenance and high maintenance cost

Inactive Publication Date: 2008-04-30
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is the adjustment of the delay time of the transmission network. Using the method and system of the present invention, the secondary time server can realize the time signal calibration without external equipment, and can automatically measure the transmission when the delay of the transmission network changes. Delay and automatic compensation solves the problems of inconvenient maintenance, high maintenance cost and one-time calibration caused by specific technicians carrying a large number of instruments to the site for adjustment

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  • Method and system for adjusting network time

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Embodiment Construction

[0037] The invention provides a method for adjusting network time, through which the system can enable the secondary time server to realize DCLS time signal calibration without an external instrument, and can automatically measure transmission delay and automatically compensate when transmission network delay changes.

[0038] See the specific implementation figure 2 and image 3 :

[0039] Step 011: the primary time server (11) obtains the time signal from the GPS global satellite positioning system.

[0040] Step 012: the primary time server (11) outputs the DCLS signal to the E1 conversion device (12),

[0041] And record the first time A of sending the DCLS signal;

[0042] Step 013: The DCLS signal is converted by the E1 conversion device (12), and inserted into a 64K time slot of the E1 conversion device (12).

[0043]Step 014: The E1 conversion device (12) is multiplexed to the N-order synchronous transmission module through the transmission device in the transmiss...

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Abstract

The invention provides a method for adjusting network time, which includes the following steps: a Grade I time server obtains the delayed time of transmission network, and sends the time to a Grade II time server which adjusts the own time thereof to the coordinated universal time through the received delayed time of transmission network. The invention also provides a system for adjusting network time. The system includes an obtaining unit and an adjusting unit.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and system for adjusting network time. Background technique [0002] Due to the continuous development of communication technology and the improvement of customers' requirements for time synchronization, time synchronization technology is also constantly developing, and more and more applications are applied to communication networks. The so-called time synchronization technology refers to that after obtaining the standard time UTC (Coordinated Universal Time Coordinated Universal Time) from the time source (such as the global satellite positioning system), the time information is sent to all kinds of time synchronization through the inter-office / intra-office time distribution link. on the device. [0003] At present, the more common means of transmitting time signals in the world are IRIG-B (Inter Range Instrumentation Group internal instrument organization), DC...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B17/00
CPCH04J3/065H04J3/0638
Inventor 洪治
Owner HUAWEI TECH CO LTD
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