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Optical passage establishing method, wavelength-division apparatus and system

A method of establishing an optical channel technology, applied in the field of optical communication, can solve problems such as wavelength path degradation, error-prone, unavailable, etc., and achieve the effect of improving network transmission performance, facilitating real-time scheduling, and avoiding error-prone effects

Inactive Publication Date: 2011-11-02
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

However, as the network scale increases, an area may be too large to ensure that all optical channels have satisfactory signal quality, which brings two problems to be solved: first, the Optical channel routing may be unavailable after it is actually built; second, due to the mutual influence between wavelengths, after the establishment of a new wavelength path, the existing wavelength path deteriorates and becomes unavailable
Manual operation is error-prone and accuracy cannot be guaranteed

Method used

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  • Optical passage establishing method, wavelength-division apparatus and system
  • Optical passage establishing method, wavelength-division apparatus and system
  • Optical passage establishing method, wavelength-division apparatus and system

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Embodiment Construction

[0034] The present invention provides an optical channel establishment method, a wavelength division system and a wavelength division device. The core idea is: after determining the key physical layer constraint parameters, obtain the margin value of the selected physical layer constraint parameters at the sink node of the existing service wavelength And pass it to the upstream node corresponding to the service wavelength. The node that the existing service wavelength passes determines and publishes the margin value of the section link where the node is located according to the margin value, and calculates the route according to the RWA algorithm. If the calculated route When the margin value of the section link passed meets the preset margin value requirement, an optical channel is established along the route.

[0035] The implementation method of the present invention is described in detail by taking an application in a simple networking as an example.

[0036] figure 2 It...

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Abstract

This invention discloses one light channel establishing method, device and system, which comprises the following steps: getting selected physical layer binding parameters allowance values on current wavelength points on business wavelength upper stream; determining and distributing point section linkage allowance values on current point according to received allowance values; when allowance values of the linkage meet set values according to business path, establishing light channel along the path.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to an optical channel establishment method, a wavelength division device and a wavelength division system. Background technique [0002] WDM (Wavelength Division Multiplexing) technology is a technology that simultaneously transmits multiple wavelength optical signals in one optical fiber. Its adoption solves the problem of network bandwidth caused by the rapid growth of image and data services in recent years. The problem of great demand. The traditional WDM network is a point-to-point static network. With the explosive growth of IP services and the uncertainty and unpredictability of IP traffic itself, the requirement for dynamic allocation of network bandwidth is becoming more and more urgent. A rapidly changing business environment requires a new type of optical network with strong dynamic performance. The emergence of ROADM / WSS (Reconfigurable Optica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J14/02
Inventor 熊皥怡高建华陈铭梁大鹏
Owner HUAWEI TECH CO LTD
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