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Routing distribution method and device applied to hybrid grid optical network

An optical network and routing technology, applied in the field of hybrid grid optical network, can solve the problems of affecting network performance, occurrence of rerouting, fixed signal rate and format, etc., to avoid sorting process, avoid rerouting, and improve performance. Effect

Active Publication Date: 2021-04-20
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the fundamental problem of WDM optical network is: In order to reduce the difficulty of network implementation, a "one-size-fits-all" mode is adopted in bandwidth allocation and performance management, that is, channel spacing, signal rate and format, etc. parameters are fixed
For example, the corresponding de-fragmentation operation is performed only when fragments have gradually accumulated to a certain threshold or have caused business congestion, which means that rerouting will occur during this process, which will affect the performance of the entire network

Method used

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  • Routing distribution method and device applied to hybrid grid optical network
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  • Routing distribution method and device applied to hybrid grid optical network

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0042] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechan...

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Abstract

The present invention discloses a route distribution method and device applied to a hybrid grid optical network. The method includes: determining several alternative routes between a source node and a destination node in the hybrid grid optical network; Alternate routing, after calculating the spectrum compactness of each link according to the grid attribute of the starting node of each link of the alternative route, determine the cost value of the alternative route according to the calculated spectrum compactness; According to the cost value of each candidate route, one of the candidate routes is selected as the final route allocated to the service between the source node and the destination node. The application of the present invention can avoid resource defragmentation and the occurrence of rerouting caused by resource defragmentation, so that the performance of the entire network is improved.

Description

technical field [0001] The present invention relates to the technical field of hybrid grid optical network, in particular to a routing distribution method and device applied to hybrid grid optical network. Background technique [0002] With the rapid growth of new large-capacity services represented by high-definition video services, data center data requests, and distributed services, the data traffic has shown an exponential growth. Lattice optical network has become one of the main directions of optical network development. However, due to the high price of key enabling devices (such as bandwidth variable wavelength selection switches, etc.), the cost of large-scale deployment is too high, and the upgrade of equipment from traditional WDM optical networks to flexible grid optical networks will affect or even interrupt the network. Therefore, the more realistic situation is to partially upgrade the traditional WDM optical network and gradually transition to the flexible g...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04L12/707H04L12/721H04L45/24
CPCH04Q11/0005H04L45/22H04L45/14H04Q2011/0022
Inventor 郁小松陈文征赵永利张杰
Owner BEIJING UNIV OF POSTS & TELECOMM
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