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Node conflict resolution method and device based on crosstalk avoidance and resource reservation

A resource reservation and node conflict technology, applied in the field of optical communication, can solve problems such as crosstalk in service transmission, high cost, immature spectrum conversion technology, etc.

Active Publication Date: 2020-10-20
CHINA MOBILE M2M
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Node conflict resolution method and device based on crosstalk avoidance and resource reservation
  • Node conflict resolution method and device based on crosstalk avoidance and resource reservation
  • Node conflict resolution method and device based on crosstalk avoidance and resource reservation

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Embodiment Construction

[0050] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0051] as attached figure 1 As shown, it is a layered all-optical node structure of the space division multiplexing elastic optical network, and all services are switched on the all-optical layered node. The layered all-optical node structure of the space division multiplexing elastic optical network has N input / output ports, each port has a fiber core, and each fiber core has M modes of transmission services. When the service arrives at the switch port of the node, the control module performs spectrum space exchange in the N×N full-connection mode on the first layer of the layered all-optical node structure according to the destination port of the service. If the business conflicts due to competition for the same spectrum resource, the control module will switch the conflicting business to the second layer of the all-optical hierarchical ...

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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 comprises the following steps: configuring a finite spectrum converter and a resource reservation module in an all-optical hierarchical node of the space division multiplexing elastic optical network; and constructing a mode-spectrum crosstalk auxiliary graph by comprehensively considering crosstalk between adjacent modes in the few-mode optical fiber and spectrum resource use conditions on the modes. In an all-optical layered node, when packets compete for spectrum resource conflicts of the same destination port, a sliding window method based on crosstalk avoidance is proposed to calculate resource values of idle spectrum blocks according to idle spectrum block resources of a limited spectrum converter conversion range and mode of the node, so that the scheduling problem of conflict servicesis solved in a space-frequency domain; and when the space-frequency domain cannot solve the conflict, the conflict service is reserved to the next time slot scheduling of the resource reservation module so as to reduce the bandwidth blocking rate and the average time delay of the service.

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 network with a fixed grid c...

Claims

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Application Information

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IPC IPC(8): H04Q11/00
CPCH04Q11/0062H04Q2011/0086
Inventor 刘焕淋方菲陈勇蔚承英任杰
Owner CHINA MOBILE M2M
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