Business level classification based frequency spectrum sharing degree protecting method and device

Abstract

The invention discloses a business level classification based frequency spectrum sharing degree protecting method and device. The business level classification based frequency spectrum sharing degree protecting device mainly comprises a path business request level classification module (2), an establishment module (4), a frequency spectrum sharing degree setting module (6), a first frequency spectrum resource distribution module (8), a second frequency spectrum resource distribution module (10) and a sequence classification module. The general conception of the business level classification based frequency spectrum sharing degree protecting method and device aims at the survivability problem of an optical network with flexible frequency spectrums and the problem of how to carry out effective protection and rapid recovery when a business is in failure. Different business service levels are classified and protected by introducing the basic idea of the frequency spectrum sharing degree, and distribution and optimization of the frequency spectrum resource for the businesses are carried out through self-adaptively adjusting the threshold of the frequency spectrum sharing degree, so that vicious competition in a malfunctioned business recovery process caused by frequency spectrum resource sharing is removed, a restrictive relation between the business failure recovery and the frequency spectrum efficiency is removed, and the network survivability of the businesses is ensured.

Description

technical field [0001] The invention is applied in the spectrum flexible optical network, and is mainly used to solve the vicious competition in the recovery process of service failure. Background technique [0002] With the rapid development of mobile Internet, big data, cloud services, and the Internet of Things, the demand for network services and applications has grown rapidly, and the bandwidth capacity has increased significantly. Optical networks are evolving in the direction of scale and complexity. In the traditional wavelength division multiplexing optical network, the network settings such as wavelength channel grid, signal rate, and modulation format are basically fixed, and this optical network cannot dynamically and flexibly schedule services corresponding to service bandwidth requirements according to the size of bandwidth required by customers. Matching bandwidth resources leads to a serious waste of bandwidth in wavelength division multiplexing optical netwo...

AI Technical Summary

Problems solved by technology

However, since the spectrum resources on the protection path cannot be utilized by other services, the utilization efficiency of spectrum resources in this protection mode is low

In the second method, since the spectrum resource sharing function is added to the protection path, the spectrum resource efficiency of this protection method is higher than that of dedicated protection; however, since the spectrum resources can be shared, it is necessary to determine which protected loss of business, the recovery speed of this protection method is slower than that of dedicated path protection

[0007] Although the above two protection methods can solve the failure problem of a single service to a certain extent, when multiple services fail, they cannot effectively restore multiple damaged services

In particular, for the spectrum sharing protection technology, the reserved shared spectrum resources are shared by multiple damaged services. During the service recovery process, these damaged services compete fiercely for the shared spectrum resources, which may easily lead to bad competition in the service recovery process. It causes information out of synchronization between services, making it difficult to determine the order of service recovery, which makes the service face the risk of unrecoverable failures, thus wasting the spectrum resources of the optical network and causing low efficiency of service recovery from failures

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