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Method, system and node equipment for acquiring optical wavelength path

A node device, optical wavelength technology, applied in the field of optical communication, can solve the problems of long calculation time of global optimization path algorithm, long time to obtain optical wavelength path, affecting service performance, etc., to reduce system processing time, reduce transmission delay, The effect of improving business performance

Inactive Publication Date: 2012-09-05
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the existing path algorithm technology can calculate the available and optimized optical wavelength path, there is a transmission delay in the path calculation request and response, and the calculation time of the global optimal path algorithm is also long, which will lead to a long time to obtain the optical wavelength path , thereby affecting business performance

Method used

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  • Method, system and node equipment for acquiring optical wavelength path
  • Method, system and node equipment for acquiring optical wavelength path
  • Method, system and node equipment for acquiring optical wavelength path

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Embodiment 1

[0034] The embodiment of the present invention provides a method for obtaining an optical wavelength path, such as figure 1 shown, including:

[0035] 101: Obtain the optical damage parameter value of the traffic engineering link in the network and the optical reception tolerance parameter value of the node in the network;

[0036] 102: Obtain a path calculation request, and use a conventional path calculation algorithm to obtain a first optical wavelength path according to the path calculation request;

[0037] 103: Accumulate the optical damage parameter values ​​of each traffic engineering link on the first optical wavelength path to obtain a first accumulated optical damage value;

[0038] 104: Compare the accumulated value of the first optical damage with the optical reception tolerance parameter value of the first node of the first optical wavelength path and the optical reception tolerance parameter value of the end node on the first optical wavelength path;

[0039] ...

Embodiment 2

[0062] An embodiment of the present invention provides a method for obtaining an optical wavelength path, such as image 3 shown, including:

[0063] 301-304 are the same as 201-204 in Embodiment 1, and will not be repeated here.

[0064] 305: When the local node judges that the acquired optical wavelength path is unavailable, set the cost weight of the traffic engineering link as the optical damage parameter value of the traffic engineering link, and use the minimum optical damage constraint algorithm to obtain the second optical wavelength path, the minimum optical The damage constraint algorithm is as follows: the optical damage constraint values ​​of each segment of the traffic engineering link on the path in the network are respectively accumulated according to the formula in 304 to obtain the optical damage accumulation value, and the path with the smallest optical damage accumulation value is selected as the obtained second optical wavelength path, the optical damage c...

Embodiment 3

[0068] An embodiment of the present invention provides a node device, such as Figure 4 As shown, the link resource management module and the path calculation module;

[0069] The link resource management module is used to obtain the optical damage parameter value of the traffic engineering link in the network and the optical receiving tolerance parameter value of the node in the network;

[0070] The path calculation module is used to receive a path calculation request, obtain the first optical wavelength path from the local node device to the destination node device by using a conventional path calculation algorithm according to the path calculation request, and divide each segment of the traffic engineering link through which the first optical wavelength path passes The optical damage parameter values ​​of the first optical wavelength path are respectively accumulated to obtain the first optical damage accumulation value of the first optical wavelength path, and the first o...

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Abstract

The embodiment of the invention discloses a method, a system and node equipment for acquiring an optical wavelength path, belonging to the communication field. The method comprises the following steps: acquiring optical damage parameter values of a traffic engineering link in the network and optical receiving margin parameter values of nodes in the network; acquiring a first optical wavelength path by using the conventional path calculating algorithm; accumulating the optical damage parameter values of each section of the traffic engineering link on the first optical wavelength path, and acquiring a first optical damage accumulated value; comparing the first optical damage accumulated value with the optical receiving margin parameter value of the head node on the first optical wavelength path and the optical receiving margin parameter value of the end node on the first optical wavelength path; and judging whether the optical wavelength path is successfully acquired or not according tothe comparative result. The technical scheme of the embodiment of the invention can quickly acquire the optical wavelength path and is favorable for improving the service performance.

Description

technical field [0001] The present invention relates to the field of optical communication, in particular to a method, system and node device for obtaining an optical wavelength path. Background technique [0002] The Automatically Switched Optical Network (ASON) introduces the control plane between the transport plane and the management plane of the traditional optical network, so as to have the functions of automatic neighbor, automatic link and automatic topology discovery, and use the rerouting of the control plane The mechanism, combined with the protection mechanisms such as subnet connection protection and multiplex section protection of traditional transmission networks, can flexibly and automatically provide such as permanent 1+1 protection, 1+1 protection plus recovery, multiplex section protection plus recovery, shared mesh Various types of protection and recovery services such as network recovery, dynamic recovery, unprotected, and additional services. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J14/02
Inventor 孙俊李蔚石兴华饶宝全
Owner HUAWEI TECH CO LTD
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