Conflict resolution method for all-optical nodes of space division multiplexing elastic optical network

Abstract

The invention relates to a conflict resolution method for all-optical nodes of a space division multiplexing elastic optical network, and belongs to the technical field of optical communication. The method comprises the following steps: configuring a shared finite frequency spectrum converter and an optical fiber delay line in an all-optical node of the space division multiplexing elastic opticalnetwork; comprehensively considering an idle spectrum proportion, an idle spectrum block proportion and different fiber core spectrum utilization rates of a fiber core in the all-optical node, and carrying out fiber core switching on conflict services in an airspace to solve a conflict problem; when the airspace cannot solve the conflict, comprehensively considering the maximum frequency slot index occupied by the frequency spectrum in the optical fiber delay line, the proportion of idle frequency spectrum blocks in the optical fiber delay line, the number of limited frequency spectrum converters and the conversion range of the limited frequency spectrum converters, designing a resource measurement formula of idle spectrum blocks in an optical fiber delay line, and proposing a minimum spectrum discrete conversion degree algorithm based on the formula, thereby solving the conflict service scheduling problem in a time-frequency domain, and reducing the service bandwidth blocking rate andcache time delay.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and relates to a conflict resolution method for an all-optical node of an elastic optical network with space division multiplexing. Background technique [0002] In recent years, with the rapid development of new Internet protocol applications, such as high-definition television, interactive games, the Internet of Things, and cloud computing, the scale of equipment has gradually increased, and the network load has gradually increased. On the other hand, different applications have also caused Differentiated bandwidth requirements. The traditional wavelength division multiplexing network using single-core, single-mode fiber divides the frequency spectrum into channels of wavelength units. This fixed-grid network will cause bandwidth waste, and it is difficult to meet high-speed, different-granularity bandwidth requirements for service transmission. In the elastic optical network bas...

AI Technical Summary

Problems solved by technology

When a large number of data services are transmitted in the space division multiplexing elastic optical network, due to the limited number of port transceivers in the all-optical node, when the service passes through the all-optical node, it will cause conflicts due to contention for port spectrum resources

If there is no effective all-optical node structure and resource competition conflict resolution algorithm applied in the space division multiplexing elastic optical network, a large number of services will be blocked, causing network paralysis

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