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System and method for impairment-aware routing and wavelength assignment in wavelength switched optical networks

A wavelength distribution, optical network technology, applied in electromagnetic wave transmission systems, optical multiplexing systems, selection devices for multiplexing systems, etc., can solve problems such as path calculation constraints

Inactive Publication Date: 2011-11-16
HUAWEI TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Path calculations can also be constrained by other issues along the optical path, such as excessive optical noise

Method used

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  • System and method for impairment-aware routing and wavelength assignment in wavelength switched optical networks
  • System and method for impairment-aware routing and wavelength assignment in wavelength switched optical networks
  • System and method for impairment-aware routing and wavelength assignment in wavelength switched optical networks

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Embodiment Construction

[0023] It should be understood at the outset that although an illustrative implementation of one or more embodiments is provided below, the disclosed systems and / or methods may be implemented using any number of techniques, whether presently known or in existence. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but rather be limited by the appended claims along with their full scope of equivalents. modified within the scope.

[0024] To ensure proper operation in an optical network, multiple network components (eg, NEs, subsystems, devices, cabling, etc.) can be characterized at a level of detail. The detailed characteristics of these network components can be taken into account during the network planning, installation and connection phases. In addition, the network component characteristics can be used during day-to...

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Abstract

An apparatus comprising a path computation element (PCE) configured for at least partial impairment aware routing and wavelength assignment (RWA) and to communicate with a path computation client (PCC) based on a PCE protocol (PCEP) that supports path routing, wavelength assignment (WA), and impairment validation (IV). Also disclosed is a network component comprising at least one processor configured to implement a method comprising establishing a PCEP session with a PCC, receiving path computation information comprising RWA information and constraints from the PCC, establishing impairment aware RWA (IA-RWA) based on the path computation information and a private impairment information for a vendor's equipment, and sending a path and an assigned wavelength based on the IA-RWA to the PCC. Disclosed is a method comprising establishing impairment aware routing and wavelength assignment for a plurality of network elements (NEs) in an optical network using routing and combined WA and IV.

Description

[0001] Cross References to Related Applications [0002] This application requires Li Yong et al. to submit the application number "US 12 / 695634" on January 28, 2010, and the title is "Architecture Framework for the Control Plane and Measurement of Impairment-Aware Routing and Wavelength Assignment in Wavelength Switched The priority of the US official application of "Optical Networks", the official application requested by Li Yong et al. on February 6, 2009, the application number is "US 61 / 150,679", and the title is "Architecture Framework for the Control Plane and Measurement of Impairment-Aware Routing and Wavelength Assignment in Wavelength Switched Optical Networks", both of which are incorporated herein by reference as if reproduced in their entirety. Background technique [0003] Wavelength Division Multiplexing (WDM) is a technology envisioned to increase bandwidth capacity and enable bi-directional communication in optical networks. In a WDM network, multiple data ...

Claims

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Application Information

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IPC IPC(8): H04B10/12
CPCH04J14/0258H04J14/0256H04J14/0269H04J14/0257H04J14/0271H04J14/0227H04Q2011/0073H04Q11/0062H04J14/0267H04Q2011/0086
Inventor 李勇伯恩斯坦·格雷格
Owner HUAWEI TECH CO LTD
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