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A method for improving grid protection performance

A technology of protection performance and grid network, applied in the field of optical transmission, can solve problems such as low efficiency, achieve the effect of improving performance and reducing the probability of resource conflict

Inactive Publication Date: 2009-12-09
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the recovery method of preset routes, currently only one guarantees 100% service recovery for a single node or single network segment failure. When multiple failure points fail, the traditional method is efficient in terms of fully utilizing the protection bandwidth to restore services for users. relatively low

Method used

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  • A method for improving grid protection performance
  • A method for improving grid protection performance
  • A method for improving grid protection performance

Examples

Experimental program
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Embodiment Construction

[0015] The present invention introduces the protection channel usage rate K (that is, the frequency used by the protection channel as a backup route for normal business) to all channels, and will be applied to the calculation process of the Mesh network service recovery backup route, that is, the cumulative calculation of the use of the protection channel , and use the utilization rate of the protection channel as a weighting factor in calculating the path weight of the network topology of the service recovery route, so that the route calculation of the service recovery route can avoid the route with a high utilization rate of the protection channel. At the same time, for a calculated routing segment, the protection channel with a low protection channel utilization rate is preferentially arranged.

[0016] The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings. exist figure 1 , figure 2 and imag...

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Abstract

The invention discloses a method for improving the protection performance of a grid network, comprising: step 1, selecting a port with a protection service from the grid network and taking out the protection service of the port; step 2, reorganizing the grid network network topology, and the protection channel utilization rate is included in the weight of the grid network topology path edge after reorganization; step 3, using a known algorithm to calculate a backup route for the port protection service; step 4, according to the calculated Backup routes, using the protection channel usage rate to allocate specific protection channels segment by segment; step 5, repeating steps 1 to 4, until the calculation of backup routes for all protection services in the entire grid network is completed. The method provided by the invention maximizes the utilization of the protection bandwidth of the system, reduces the resource conflict probability of multi-point failure, and improves the protection performance of the Mesh network.

Description

technical field [0001] The invention belongs to the field of optical transmission, in particular to a service recovery method for optical transmission Mesh (grid) complex network. Background technique [0002] Optical transmission networks, including transmission networks such as Wavelength Division Multiplex (WDM), Synchronous Digital Hierarchy (SDH), and Synchronous Optical Network (SONET), have been widely used in the telecommunications field. At the same time, fault service recovery methods such as multiplex section protection ring and linear link multiplex section protection suggested by ITU-TG.841 are also widely used in practice, but these methods are not suitable for complex networks such as mesh networks ) is not very applicable. For the mesh network, the recovery method of preset routing or dynamic routing is generally used at present. For the recovery method of preset routes, currently only one guarantees 100% service recovery for a single node or single network...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/56H04B10/08H04L12/437H04J14/00H04B10/032H04L45/28
Inventor 涂晓平
Owner ZTE CORP
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