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Method and controller for expansion and commissioning of wavelength division multiplexing optical network

A wavelength division complex and controller technology, applied in the field of optical communication, can solve the problems of difficult to determine the adjustment pace, slow adjustment speed, affecting the optical signal, etc., to achieve the effect of improving the commissioning efficiency

Inactive Publication Date: 2016-05-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the above-mentioned feedback-based adjustment method is adopted, the adjustment pace is difficult to determine, and when the adjustment pace is not selected properly, the adjustment speed may be too slow. Then, the optical parameters of the optical signals in the network need to be repeated. Multiple adjustments may affect other optical signals that have been opened in the network

Method used

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  • Method and controller for expansion and commissioning of wavelength division multiplexing optical network
  • Method and controller for expansion and commissioning of wavelength division multiplexing optical network
  • Method and controller for expansion and commissioning of wavelength division multiplexing optical network

Examples

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Embodiment 1

[0029] see figure 1 , a method for WDM optical network capacity expansion commissioning, specifically comprising the following steps:

[0030] Step 101: Calculate the initial power of the wavelength service to be added according to a predetermined rule, and add one or more wavelength services according to the calculated initial power;

[0031] Step 102: Detect the power of each newly added wavelength service during transmission, and calculate the target power of each newly added wavelength service according to the detected value and the initial power;

[0032] Step 103: Calculate the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly added wavelength service when each newly added wavelength service reaches its target power;

[0033] Step 104: When each newly added wavelength service reaches its target power, and the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly added w...

Embodiment 2

[0040] see figure 2 , is an example diagram of a WDM (WavelengthDivisionMultiplex, wavelength division multiplexing) optical network system architecture corresponding to an embodiment of the present invention, the system includes five sites A, B, C, D and E, wherein A and E It is an OTM (Optical Terminal Multiplexer, optical terminal multiplexing) site, B and D are OLA (Optical Line Amplifier, optical line amplification) sites, C is a ROADM (Reconfigurable Optical Add-Drop Multiplexer, reconfigurable optical add-drop multiplexing equipment) site, sites A and B , C, D and E are connected through optical fibers a, b, c and d, and the length of a, b, c and d can be specifically 80 km.

[0041] The following is a detailed introduction to the specific structure and corresponding functions of the above-mentioned sites:

[0042]Site A includes OTU (Optical Transponder Unit, optical wavelength conversion board), M40V (40-channel Multiplexing Board with VOA, 40-channel adjustable opt...

Embodiment 3

[0113] see Figure 4 , a controller, the controller may specifically be the same as the controller in the method embodiment, including: a service activation module 301, a first calculation module 302, a second calculation module 303, and a commissioning module 304;

[0114] The service opening module 301 is used to calculate the initial power of the wavelength service to be added according to predetermined rules, and add one or more wavelength services according to the initial power;

[0115] The first calculation module 302 is used to detect the power of each new wavelength service during transmission, and calculate the target power of each new wavelength service opened by the service activation module 301 according to the detected value and the initial power;

[0116] The second calculation module 303 is used to calculate the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service when each newly-added w...

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Abstract

The present invention discloses a method and a controller for commissioning a wave division multiplexing optical network during capacity expansion, and belongs to the field of optical communications. The method includes: calculating, according to a preset rule, initial power of a wavelength service to be added and adding one or more wavelength services according to the initial power; detecting power of each newly-added wavelength service in transmission and separately calculating target power of each newly-added wavelength service according to a detected value and the initial power; calculating end-to-end performance of an existing wavelength service and end-to-end performance of each newly-added wavelength service when each newly-added wavelength service reaches its respective target power; and adjusting the power of each newly-added wavelength service when each newly-added wavelength service reaches its respective target power and the end-to-end performance of the existing wavelength service and the end-to-end performance of each newly-added wavelength service meets their respective lowest threshold requirements. With the present invention, a newly-added wavelength service imposes no impact to performance of an existing wavelength service on a network, thereby effectively improving commissioning efficiency.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a method and controller for capacity expansion and commissioning of a wavelength division multiplexing optical network. Background technique [0002] The optical signals in the WDM (Wavelength Division Multiplex) optical network can be multiplexed, transmitted, amplified, routed and restored in the optical domain, making the WDM optical network a research hotspot in the field of optical communication. According to whether the network elements in the WDM optical network can perform electrical processing on optical signals, the WDM optical network can be divided into two types: Transparent (transparent) optical network and Opaque (opaque) optical network. For transparent optical networks, optical signals are always transmitted in the form of optical signals during transmission from the source network element to the sink network element, and signal regeneration, switching, and w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/077H04B10/079H04J14/02
CPCH04B10/07955H04B10/294H04J14/0221H04J14/0282
Inventor 韩建蕊徐明明石礌谭琳
Owner HUAWEI TECH CO LTD
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