A node conflict resolution method and device based on crosstalk avoidance and resource reservation

Abstract

The invention relates to a node conflict resolution method and device based on crosstalk avoidance and resource reservation, and belongs to the technical field of optical communication. The method of the present invention configures a limited spectrum converter and a resource reservation module in an all-optical layered node of a space-division multiplexing elastic optical network; and comprehensively considers the crosstalk between adjacent modes in the few-mode fiber and the spectrum resources on the mode Usage, Construct Mode‑Spectral Crosstalk Auxiliary Map. In the all-optical layered node, when the group conflicts due to competition for the spectrum resource of the same destination port, according to the limited spectrum converter conversion range and mode of the idle spectrum block resource of the node, a sliding window method based on crosstalk avoidance is proposed to calculate the idle spectrum block In order to solve the scheduling problem of conflicting services in the space-frequency domain; when the conflict cannot be resolved in the space-frequency domain, reserve the conflicting services to the next time slot scheduling of the resource reservation module to reduce the bandwidth blocking rate of services and average delay.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and relates to a node conflict resolution method and device based on crosstalk avoidance and resource reservation. Background technique [0002] In recent years, with the rapid development of new Internet protocol applications, such as high-definition video transmission, interactive games, the Internet of Things, and cloud computing, the scale of equipment has gradually increased, and the network load has gradually increased. It is necessary to build a large number of data centers to meet Increasing computing resource requirements. Because different applications are distributed in their respective data centers for high-speed processing, the data center network can meet the network requirements of large capacity. However, the traditional wavelength division multiplexing network divides the frequency spectrum into channels of wavelength units. This kind of fixed-grid network causes b...

AI Technical Summary

Problems solved by technology

However, spectrum conversion in the optical domain has shortcomings such as immature technology, high cost, and difficult implementation. On the other hand, there is a problem of crosstalk in service transmission.

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