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Optical layer protection method for ROADM in multi-node ROADM ring network

A multi-node, ring network technology, applied in the field of communication, to achieve the effect of fast scheduling, optimization of system resource utilization, and cost saving

Active Publication Date: 2009-11-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional OADM equipment needs different hardware equipment to realize these three kinds of protection

Method used

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  • Optical layer protection method for ROADM in multi-node ROADM ring network
  • Optical layer protection method for ROADM in multi-node ROADM ring network
  • Optical layer protection method for ROADM in multi-node ROADM ring network

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Embodiment Construction

[0076] image 3 It is a realization block diagram of the present invention, and the optical layer protection method of ROADM equipment comprises the following steps:

[0077] The first step is to divide the protection type of service wavelength, wavelength and transmission working path and protection path according to the priority of system business;

[0078] The second step is to configure detectors, actuators and controllers according to the protection type;

[0079] In the third step, the controller controls the actuator to switch according to the protection type and system status.

[0080] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment:

[0081] Figure 4 is based on figure 2 The structural block diagram of the ROADM node device in the two optical directions of the ROADM is shown. The ROADM is composed of an optical preamplifier OPA_A in the A direction, a coupler in the A direction, a w...

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Abstract

The invention discloses an optical layer protection method for ROADM in a multi-node ROADM ring network, comprising the following steps: (1), dividing the protection type of a service wavelength, a wavelength and a working path and a protection path of transmission according to the priority level of system service; (2), configuring a detector, an actuator and a controller according to the protection type; and (3), collecting and analyzing the detection information of the detector by the controller, and controlling the actuator to switch according to the protection type and an analysis result.Based on the same device, the invention utilizes the characteristic of wavelength reconstruction of ROADM equipment, the controller can control the actuator to carry out different operation accordingto the information of the detector, the switching of various protection types is flexibly realized under the precondition that hardware equipment is not replaced, the effect of the fast scheduling ofservice resources by the optical network is achieved, the cost of service fulfillment is saved, the speed of service fulfillment is enhanced, and the utilization of system resources is optimized.

Description

technical field [0001] The invention relates to a configurable optical add-drop multiplexing (ROADM) optical transmission device in the communication field, in particular to an optical layer protection method of the device. Background technique [0002] With the extensive application of Dense Wavelength Division Multiplexing (DWDM) and Optical Amplifier (OA) technologies on the backbone network, the bandwidth and transmission capacity of the network have been greatly improved, and the development of a large number of communication resources has rapidly expanded the demand for services, among which The explosive growth of data services makes the optical transmission system more and more applied in the land network of the city. The networking mode of the metropolitan area network is generally ring-based, consisting of a backbone ring and an access ring, and optical add-drop multiplexing (OADM) equipment is widely used. [0003] Due to the large amount of business in the MAN, ...

Claims

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Application Information

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IPC IPC(8): H04J14/02H04B10/12H04B10/038
Inventor 张红宇
Owner ZTE CORP
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