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Method, device and system for establishing wavelength connection

A technology of connection establishment and wavelength, which is applied in the field of network communication, can solve problems such as allocation of wavelength regeneration modules, failure of second wavelength connection establishment, etc., to achieve the effects of improving reliability, avoiding establishment failure, and optimizing usability

Active Publication Date: 2013-11-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a wavelength division node includes two wavelength regeneration modules, namely, wavelength regeneration module 1 and wavelength regeneration module 2, assuming that both wavelength regeneration module 1 and wavelength regeneration module 2 support the first wavelength connection, and only wavelength regeneration module 1 Support the second wavelength connection, in this case, if the wavelength division node selects the wavelength regeneration module 1 for the first received wavelength connection establishment request message, then the wavelength division node can no longer receive The second wavelength connection establishment request message successfully allocates the wavelength regeneration module, resulting in the failure of the second wavelength connection establishment

Method used

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  • Method, device and system for establishing wavelength connection
  • Method, device and system for establishing wavelength connection
  • Method, device and system for establishing wavelength connection

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Experimental program
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Embodiment 1

[0035] Embodiment 1. A wavelength connection establishment method. The flow of the method is attached figure 1 shown.

[0036] S100. Acquire wavelength regeneration module support information (that is, wavelength regeneration module regeneration capability information) of the wavelength division node. The wavelength division nodes here may include wavelength division nodes that need to perform wavelength regeneration processing.

[0037] The execution subject of S100 may be the first node of the wavelength path (that is, the first node of the wavelength path in the distributed wavelength path calculation mode), or may be the centralized wavelength path calculation node. The executing subject of S100 may acquire the wavelength regeneration module support information of the wavelength division node from the information stored by itself. That is to say, the execution body of S100 stores the wavelength regeneration module support information of the WDM node, and the stored info...

Embodiment 2

[0049] Embodiment 2, a wavelength connection establishment method. The flow of the method is attached figure 2 shown.

[0050] figure 2 In S200, a wavelength division node in a wavelength path that needs to perform wavelength regeneration processing receives a message including wavelength regeneration module selection information.

[0051] The message received by the wavelength division node may be a wavelength connection establishment request message. The wavelength regeneration module selection information in the message may be the number of the selected wavelength regeneration module or other information.

[0052] The wavelength regeneration module selection information carried in the message is determined by other nodes according to the optimal use algorithm of the wavelength regeneration module in the wavelength division node. The other nodes here are the head node of the wavelength path or the centralized wavelength path computing node.

[0053] The message includ...

Embodiment 3

[0057] Embodiment 3, a wavelength connection method. Attached below Figure 3A , attached Figure 3B And attached Figure 3C This embodiment will be described with an example.

[0058] Figure 3A Include three nodes, namely N1, N2 and N3. Between the wavelength interfaces of N1 and N3, a wavelength connection can be established through N2. The optical fiber link between N1 and N2 may be referred to as optical fiber link 1, and the optical fiber link between N2 and N3 may be referred to as optical fiber link 2. N2 is a wavelength division node that needs to perform wavelength regeneration processing. N2 can switch the wavelength signal in optical fiber link 1 to optical fiber link 2, so that the wavelength interfaces of N1 and N3 are connected.

[0059] Figure 3A The wavelength division node N2 in , contains 4 wavelength regeneration modules, and the numbers of the 4 wavelength regeneration modules are 1, 2, 3 and 4, for example Figure 3A The boxes labeled 1, 2, 3 and...

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Abstract

A method, device and system for setting up wavelength connection are disclosed. The method for setting up wavelength connection therein comprises: acquiring wavelength regeneration module supporting information of a wavelength division node; calculating a wavelength path according to the wavelength regeneration module supporting information and selecting a wavelength regeneration module for the wavelength division node that needs a wavelength regeneration process in the wavelength path; and distributing a message containing wavelength regeneration module selection information to the wavelength division node in the wavelength path so that the wavelength division node sets up the wavelength connection according to the wavelength regeneration module indicated in the wavelength regeneration module selection information. By the technical solution, the phenomenon that the set up of the wavelength connection fails can be avoided, and the reliability of the set up of the wavelength connection is improved.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to the wavelength division technology. Background technique [0002] In WDM networks, wavelength connections can span one or more fiber links. When the wavelength connection spans multiple optical fiber links, the wavelength signals on different optical fiber links are connected by the wavelength division node, that is, the wavelength division node performs wavelength cross-connection. [0003] The wavelength division node may include multiple wavelength regeneration functional modules, and the wavelength regeneration functional modules are mainly used for wavelength conversion, so as to switch wavelength signals in one optical fiber link to another optical fiber link. The wavelength regeneration function module can also be used to amplify the wavelength signal so as to improve the quality of the wavelength signal. A wavelength division node usually includes waveleng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/00H04Q2011/0086H04J14/0257H04J14/0271H04L45/42H04L45/62H04J14/0267H04L45/44H04Q2213/1301H04Q2213/13295
Inventor 资小兵
Owner HUAWEI TECH CO LTD