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Two-way circuit protective inverting method

A bidirectional line and protection switching technology, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve problems such as unprotected, unable to realize partial protection of sections on the optical fiber ring, and unable to be configured by users

Inactive Publication Date: 2005-02-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Once the protection switching of the bidirectional line protection switching ring is configured successfully, the entire bidirectional line protection switching ring will be used for protection. When it is protected, it cannot meet the user's requirements, and the user cannot perform flexible and convenient configuration. The user can only have one choice, either all the sections on the optical fiber ring are protected, or all the sections on the optical fiber ring are not protected. Realize partial protection of sections on fiber optic rings

Method used

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  • Two-way circuit protective inverting method
  • Two-way circuit protective inverting method
  • Two-way circuit protective inverting method

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Embodiment Construction

[0094] The core of the present invention is the E-NUT technology, and the technical solution of the present invention is realized based on the E-NUT technology, wherein the E-NUT technology is such a technology: by specifying the STS channel on a section on the BLSR ring as E -NUT channel, if the STS channel is a working channel, it cannot be protected, and if it is a protection channel, it cannot be used to protect other STS channels. Once an STS channel on the ring is configured as an E-NUT channel, all nodes on the ring should maintain an E-NUT table. The impact of configuring the E-NUT channel on the above.

[0095] In order to enable those skilled in the art to which the present invention belongs to understand the present invention more clearly, detailed descriptions will now be given in conjunction with the accompanying drawings.

[0096] As shown in FIG. 2 , taking a bidirectional line ring with four nodes as an example, the four nodes on the ring are node A, node B, n...

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Abstract

The method for implementing partial protection includes following step: determining that at least a STS channel in at least a section of bidirectional line is needed to be created as not protective, or not taking part in protection channel (E-NUT) or deleting (E-NUT) channel; configuring list item of E-NUT parameter of relevant node in bidirectional line, and the said list item includes first mode and second mode; when annulus rearranging occurs, if annulus rearranging of STS channel in list item of E-NUT is prohibited or allowed, then the channel is not protected or protected by annulus rearranging operation; when section rearranging occurs, if section rearranging of STS channel in list item of E-NUT is prohibited or allowed, then the channel is not protected or protected by annulus rearranging operation. The invention provides partial protection in bidirectional line bringing flexibility for user' configuration.

Description

technical field [0001] The invention relates to synchronous optical network transmission in a communication system, in particular to a bidirectional line protection switching method applied in transmission technology. Background technique [0002] In network communication, when it is necessary to maintain and test network equipment, when the optical fiber line is damaged or interrupted or the interface fails, in order to keep the network communication system from being affected and the transmission of normal network communication services, it is necessary to communicate in the network. Set up protective equipment to protect the working equipment. [0003] Bidirectional line protection switching is an important service protection method applied in synchronous optical network transmission technology. It completes the protocol action with the help of K bytes in the line overhead, so that the service signal originally transmitted on the damaged optical fiber is transferred to th...

Claims

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Application Information

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IPC IPC(8): H04B10/032
Inventor 陈斌
Owner HUAWEI TECH CO LTD