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Judging method and system for starting protection conversion system in light network

A technology for initiating protection and protection switching, applied in the field of communication, can solve the problems of system switching confusion, performance loss, system oscillation state, etc., to avoid false switching and improve survivability

Active Publication Date: 2009-09-30
CHINA UNITED NETWORK COMM GRP CO LTD
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AI Technical Summary

Problems solved by technology

We only analyzed the use of two consecutive optical line 1+1 protection systems. When several optical line 1+1 protection systems are used in succession, it will not only cause system switching confusion and performance loss, but also may cause the system to be in oscillation. state

Method used

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  • Judging method and system for starting protection conversion system in light network
  • Judging method and system for starting protection conversion system in light network
  • Judging method and system for starting protection conversion system in light network

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Embodiment Construction

[0034] The present invention proposes a new method and system for judging the startup of protection switching. In the past, the OSC channel did not participate in the judgment of starting the protection switching system, but in the present invention, the OSC channel and the main optical channel are bound together to jointly serve as the startup of the protection switching system. criteria for judging. The specific discriminant system such as Figure 6 shown.

[0035] In the present invention, the optical power of the OSC channel will be combined with the optical power of the main optical channel as the basis for judging whether to start the protection switching system. Since both the working line and the protection line contain the OSC channel and the main optical channel, the optical power that needs to be monitored The power has the following four points: the optical power of the OSC channel of the working line, the optical power of the main optical channel of the working l...

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Abstract

The method includes following steps: (1) setting up on optical monitoring channel, optical power detection device is in use for detecting optical power of optical monitoring channel; (2) based on optical power of main optical channel in working line, optical power of main optical channel and optical power of monitoring channel in protective line to determine whether protection and rearrangement system is start up or not. The invention can prevent light protection effectively from being error rearranged in procedure adopted continuously. The invention guarantees use of light protection, raises survivability of network, and provides technical groundwork for using linear protection in operation and maintenance.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method and system for judging the starting protection switching system in an optical network. Background technique [0002] In wavelength division multiplexing (WDM) or future optical transport network (OTN), an optical supervisory channel (OSC) carried by a wavelength independent of the main optical channel is adopted. OSC (Optical Supervisory Channel) is the carrier of dense wavelength division multiplexing (DWDM) / optical transport network (OTN) system management and control information. In the DWDM system, OSC is a relatively independent subsystem, which transmits maintenance and management information of the optical channel layer, optical multiplexing section layer and optical transmission section layer, provides official communication and use channels, and it can also provide other additional functions. Different from the main optical channel, the OSC signal is segmental. Aft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/08H04B1/74H04B10/03H04B10/07
Inventor 王健全孔祥华张忠平
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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