A calculation method for allocating relay resources in optical transmission network planning

A technology of optical transmission network and calculation method, which is applied in the calculation field of allocating relay resources in optical transmission network planning, can solve the problem of serious calculation time consumption, and achieve the effect of improving calculation efficiency

Active Publication Date: 2019-08-13
FENGHUO COMM SCI & TECH CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you consider minimizing the relay cost, you can traverse all node combinations and configure relays. However, when a single route passes through a large number of nodes, too many analysis situations will lead to serious calculation time consumption.

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  • A calculation method for allocating relay resources in optical transmission network planning
  • A calculation method for allocating relay resources in optical transmission network planning
  • A calculation method for allocating relay resources in optical transmission network planning

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0026] The calculation method for allocating relay resources in the optical transmission network planning of the present invention takes the source node as the starting node, finds the farthest node that can establish an effective optical channel, configures a relay at the farthest node and allocates wavelengths for the effective optical channel , and then iterate with the farthest node as the starting node until reaching the target node. Among them, the available wavelength set of the starting node is obtained, and the intersection of the available wavelength sets of the links between two adjacent nodes is obtained in turn until the result is empty or the optical signal-to-noise ratio (OSNR) of the path from the starting node to the current node is less than If the preset threshold is set, it will go back to the nearest node used to configure...

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Abstract

A method for calculating the allocation of relay resources in optical transmission network planning, which relates the field of routing planning algorithms, comprising: using a source node as a starting node, finding the farthest node which may establish an effective optical channel, configuring a relay at the farthest node and allocating a wavelength for the channel, and then iterating by using the farthest node as the starting node until a target node is reached. The manner of finding the farthest node that may establish an effective optical channel is as follows: obtaining an available wavelength set of the starting node, sequentially calculating intersections of the available wavelength set that passes through a link between two adjacent nodes until the result is empty or the path optical signal noise ratio (OSNR) from the starting node to a current node is less than a preset threshold, and then backtracking to the nearest node that is used to configure a relay. The invention improves computational efficiency without generating additional relay resources.

Description

technical field [0001] The invention relates to the field of route planning algorithms, in particular to a calculation method for allocating relay resources in optical transmission network planning. Background technique [0002] In modern communication core network, the optical transmission network composed of Wavelength Division Multiplexing (WDM) system, Optical Add-Drop Multiplexer (OADM) and Optical Cross-connect (OXC) (Optical Transport Network, OTN), which realizes flexible scheduling of large-grained and multi-type services. With the rapid development of communication technology, the OTN introduces the control plane to evolve into Automatically Switched Optical Network (ASON), realizing the intelligentization of network functions. [0003] Route and Wavelength Assignment (RWA) refers to finding a route from a source node to a sink node under a given service request, and assigning corresponding wavelengths to these routes. RWA implemented by computer program algorith...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J14/02
CPCH04J14/02H04Q11/00
Inventor 万立波马坤刘锦秋何峰
Owner FENGHUO COMM SCI & TECH CO LTD
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