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Synchronization calibration method for network element device

A network element equipment, step calibration technology, applied in electrical components, data exchange networks, digital transmission systems, etc., can solve problems such as high computational complexity and precision, insufficient chip computing power and speed, and difficult application.

Inactive Publication Date: 2008-06-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the NTP server 11 selection algorithm set by the NTP protocol itself has relatively high computational complexity and precision, and at the same time, the computing power and speed of the chip on the network element device 12 cannot meet this requirement. Difficult to apply

Method used

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  • Synchronization calibration method for network element device
  • Synchronization calibration method for network element device
  • Synchronization calibration method for network element device

Examples

Experimental program
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Embodiment Construction

[0027] Such as figure 2 , the network element device synchronous calibration method of the present invention comprises the following specific steps:

[0028] 210) The NTP CLIENT in the network element device starts running;

[0029] 220) Setting or directly reading the priority of each NTP server that has been set;

[0030] 230) Waiting for a longer time interval to arrive;

[0031] 240) judge whether the number of times of high priority NTP server failures reaches the maximum allowable selection times N; yes, enter step 241); no, enter step 242);

[0032] 241) select the next priority NTP server, proceed to step 250);

[0033] 242) select this high-priority NTP server, proceed to step 250);

[0034] 250) judging that the time comparison is successful, yes, return to step 230); no, enter the next step;

[0035] 260) Select the number of NTP server failures plus one;

[0036] 270) judge that the number of times of failure of all NTP servers has reached the maximum allowa...

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Abstract

The invention relates to a method for synchronous time calibration by a network element equipment. The method uses a standard network time protocol (NTP) for time synchronization. The method also includes the following steps: a plurality of standard NTP servers (11) are provided in the network and priority levels are set; when the network element equipment (12) selects the NTP servers (11) according to the priority level order for time calibration, N times of the selection to the maximum permitted corresponding to each NTP server (11) can be carried out before success. The method, through priority level setting and simple counting for the selection of the NTP servers, is totally applicable to the network element equipment. The problem that calculation ability and rate of a chip in the network element equipment cannot satisfy requirements of NTP server selection algorithm set by the NTP is solved.

Description

technical field [0001] The invention relates to communication and network synchronization, in particular to a method for network element equipment to use the network time protocol (NTP) for time synchronization and calibration. Background technique [0002] In a communication network, network element devices have their own working hours, and the standard network time protocol (NTP) is usually used for time synchronization. Carriers provide multiple standard NTP servers, and network element devices need to select one of them as the corresponding NTP server. Specific as figure 1 , the solid arrow in the figure indicates the NTP protocol, and the dotted arrow indicates the network management protocol. The network manager 13 of the operator manages the network element devices 12 of equipment vendors A and B. The network element devices A, B and the network manager 13 all need to synchronize time through the NTP protocol. They need to select A, B, One of C three synchronized N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/24
Inventor 边海蓉
Owner ZTE CORP
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