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All optical network business restoration method based on band width compression

A bandwidth compression and service recovery technology, applied in the field of computer networks, can solve problems such as not considering the impact of protection bandwidth resources between channels, and achieve the effect of improving the success rate of business recovery, the success rate of protection recovery, and the utilization rate of resources

Inactive Publication Date: 2012-02-08
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] In the existing recovery schemes, the impact of the protection bandwidth between channels on resources is not considered

Method used

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  • All optical network business restoration method based on band width compression
  • All optical network business restoration method based on band width compression
  • All optical network business restoration method based on band width compression

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Embodiment Construction

[0031] A bandwidth compression-based all-optical network service recovery method proposed by the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0032] The invention proposes a new recovery method in the spectrum flexible optical network, which reduces the new demand for bandwidth in the network due to failure as much as possible, recovers the damaged service, and improves the survivability of the network.

[0033] When a faulty service (or damaged service) occurs, the shortage of network resources is reflected in two aspects: first, the bandwidth required by the faulty service itself exceeds the remaining network resources; second, in the spectrum flexible optical network, due to the characteristics of optical filters, different A certain protection bandwidth is required between the channels to perform effective filtering without affecting the signal quality at the node, and the protection bandwidth occupies a ...

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Abstract

The invention relates to the technical field of a computer network and particularly discloses an all optical network business restoration method based on bandwidth compression, which comprises the following steps of: S1, reducing a bandwidth required for restoring a failure business from two aspects: 1) first compressing a protection bandwidth between channels through a specific restoration route strategy to obtain a restoration route; 2) utilizing the controllable modulation order characteristics of an all optical network to compress the bandwidth required by the failure business self if network resources for the normal restoration of the failure business are insufficient on the restoration route; S2, allocating required frequency spectrum resources for the failure business in the restoration route so as to restore the transmission of the failure business. The invention has the advantages that with the restoration route strategy, the protection bandwidth between the channels can be compressed, the utilization rate of the resources and the protection restoration success rate are improved, and the network survivability is enhanced; with the mode for improving the modulation order, the bandwidth required by the business self can be compressed as far as possible under the condition of ensuring certain signal quality, and the business restoration success rate can be effectively increased.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to an all-optical network service recovery method based on bandwidth compression. Background technique [0002] With the rapid development of modern telecommunication, computer and Internet technologies, business transmissions such as data, voice, and video are increasing and showing a trend of convergence. In order to meet the rapidly growing business needs, it is required to make full use of limited network resources. The all-optical network that supports flexible spectrum utilization adopts optical orthogonal frequency division multiplexing technology, which can well improve the utilization rate of network resources. With the rapid increase of the transmission load in the optical network, improving the survivability of the optical network and the effective utilization of resources has become an important issue faced by network service providers. When the network is und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/56H04B10/08H04B10/032H04L45/28
Inventor 赵永利张杰陈海宁黄善国顾畹仪纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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