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Wave division multiplexing (WDM) network path search method and system

A technology of network path and wavelength division multiplexing, which is applied in the field of optical communication, can solve problems such as the inability of the carrier to send services to the destination, wrong connections, and complexity, and achieve the effects of improving efficiency, improving accuracy, and improving stability

Inactive Publication Date: 2009-11-11
OPEN INVENTION NEWTORK LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the connection rules of various boards are different, and some are very complicated. If you don’t pay attention, you will make a wrong connection, and the path found is wrong. The carrier cannot send the service to the destination along the path.

Method used

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  • Wave division multiplexing (WDM) network path search method and system
  • Wave division multiplexing (WDM) network path search method and system
  • Wave division multiplexing (WDM) network path search method and system

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specific Embodiment approach

[0045] A kind of wavelength division multiplexing network path searching method of the present invention, its a kind of specific embodiment, comprises the following steps:

[0046] A. According to the connection between network elements, search out the network element linked list from the source network element of the service to the sink network element;

[0047] B. Carry out a port search on the network element linked list, and check the validity of the searched nodes, and do not continue to search from this node for invalid nodes;

[0048] C. According to the searched path topology data, sort out all possible path linked lists.

[0049] Among them, the validity check specifically checks whether each item in the wavelength, band, working or protection attribute, branch number, time slot, and service type matches.

[0050] Step B also includes checking whether there is a conflict between the searched node and the established path, and for a node with conflict, the process of ...

Embodiment approach

[0056] Another embodiment of the method of the present invention, such as image 3 As shown, its process includes the following steps:

[0057] Step 301: According to the connection between network elements, search out the network element-level connection from the source network element of the service to the sink network element, and form a first-level network element linked list;

[0058] Step 302: Divide the first-level network element linked list into several segments according to the principle of being adjacent and having the same type of network elements, to form several second-level network element linked lists;

[0059] Step 303: Generate a search thread for each network element, and perform sub-path search refined to ports in parallel with multiple threads;

[0060] Step 304: According to the searched path topology data, sort out all possible path linked lists;

[0061] Step 305: Calculate the historical number of interruptions of all connections on each path;

[00...

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Abstract

The invention discloses a WDM network path search method, including the following steps: A, a network element linked list is searched from a source network element of service to a destination network element according to network element connection; B, port searching is carried out on the network element linked list, validity check is carried out on the searched nodes, and searching is not continued from an invalid node any longer; C, all available path linked lists are sorted out according to the searched path topology structure data. The invention also discloses a WDM network path search system. The invention firstly searches out network element linked list, the port searching is carried out on the network element linked list, validity check is carried out on the node, and searching is not continued from the invalid node any longer, thus the searching efficiency is improved while the node validity is fully judged.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a wavelength division multiplexing network path search method and system. Background technique [0002] With the development of high-speed transmission network, optical communication has become a trend. Wavelength division multiplexing (WDM) technology uses a multiplexer to combine signal carriers of different specified wavelengths at the sending end and send them into an optical fiber for transmission; at the receiving side, another wave splitter combines the optical signals of these different signals Carriers are separated. In order to carry services, the WDM network management system first needs to search for available paths based on equipment resources and optical fiber connections or cross-connections between them. Equipment resources refer to various single boards that perform various functions during the carrier transmission process, and various WDM network elements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J14/02H04L45/02H04L45/125
CPCH04J14/0263H04J14/0267H04J14/0258H04J14/0271H04J14/0269H04J14/0287H04L45/125H04B10/25H04B10/2581H04L12/28
Inventor 石丽丽
Owner OPEN INVENTION NEWTORK LLC
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