Method, equipment and system for switching optical service signal protection

Abstract

The invention suits for field of light communication, it provides a light operation signal protection rearrange method, equipment and system, said method includes following steps: channel-associated marking signal is load to light operation signal at the protection rearrange operation source node; At the protection rearrange operation persistent node, channel-associated marking signal which is load in light operation signal is detected; The detecting result of channel-associated marking signal is as the trigger condition of light operation signal protection rearrange to trigger the light operation signal protection rearrange. The invention proceeds the light operation signal protection rearrange based on the detecting result of channel-associated marking signal or protection spending information ofchannel-associated marking signal, the fault detecting rate and rearrange success rate of light layer and useableness of system are increased, it also can detects whether is there fault joint in operation link, the generation of fault link can be suppressed and increases the efficiency of protection rearrange.

Description

technical field [0001] The invention belongs to the field of optical communication, and in particular relates to an optical service signal protection switching method, equipment and system. Background technique [0002] The progress of optical devices has greatly promoted the development of optical communication technology, especially the development of wavelength division multiplexing (Wavelength Division Multiplexing, WDM) technology. Currently, the communication capacity that can be carried by a single optical fiber has reached as high as terabits per second (Tbps). In this case, the failure of optical fiber lines or equipment failures in the underlying optical network often affects a large number of services, and improving network survivability has increasingly become an important issue that operators and equipment suppliers need to pay attention to. [0003] Network survivability is the ability of a network to maintain an acceptable level of service quality during netw...

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Problems solved by technology

[0011] The purpose of the embodiments of the present invention is to provide a method for protection switching of optical service signals, aiming at solving the problem that in existing optical service signal protection switching, it is difficult to faithfully reflect the optical service by using optical service signal power detection as the detection condition for optical service signal protection switching. The problem with the actual situation of the signal

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