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Two-way circuit protective inverting method

A bidirectional line, protection switching technology, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve the problems that users cannot configure, cannot achieve partial protection or unprotected upper section of the optical fiber ring, etc.

Inactive Publication Date: 2007-02-14
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
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  • Two-way circuit protective inverting method

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Embodiment Construction

[0094] The core of the present invention is the E-NUT technology. The technical solution of the present invention is based on the E-NUT technology. The E-NUT technology is such a technology: by designating the STS channel on a certain section of the BLSR ring as E -NUT channel, if the STS channel is a working channel, it cannot be protected, and if the STS channel 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. This table indicates whether the STS channel on the east-west section of the node is affected by the ring. Configure the influence of the E-NUT channel.

[0095] In order to enable those skilled in the art to which the present invention pertains to understand the present invention more clearly, it will be described in detail with reference to the accompanying drawings.

[0096] Such as figure 2 As shown, taking a bidirectional l...

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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 two-way line protection switching method for transmission technology application. Background technique [0002] In network communication, when network equipment needs to be maintained and tested, when the optical fiber line is damaged or interrupted or the interface fails, in order to prevent the network communication system from being affected and not interrupt the normal network communication service transmission, it is necessary to communicate on the network Set up protective equipment to protect working equipment. [0003] Two-way line protection switching is an important service protection method used in synchronous optical network transmission technology. It uses K bytes in the line overhead to complete the protocol action, so that the service signal originally transmitted on the damaged fiber is transferred to the protection fiber. Perform ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/00H04B10/24H04B10/032
Inventor 陈斌
Owner HUAWEI TECH CO LTD