rsa method using traffic prediction and spectrum conversion in elastic optical network

A flexible optical network and spectrum technology, applied in the field of communication, can solve problems such as congestion, underutilization of network resources, and failure to consider the flexibility of spectrum allocation

Active Publication Date: 2020-06-05
XIDIAN UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the two factors considered in route selection are based on the current network status information, ignoring the impact of specific source and sink nodes on future service requests on current service route selection. From a global perspective, This makes network resources underutilized
The disadvantage of this method is that in the spectrum allocation stage, when the network resources cannot provide a spectrum block that meets the service request, the service is directly blocked, and the use of spectrum conversion technology to improve the flexibility of spectrum allocation is not considered, resulting in service congestion. The rate is high, wasting network resources

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • rsa method using traffic prediction and spectrum conversion in elastic optical network
  • rsa method using traffic prediction and spectrum conversion in elastic optical network
  • rsa method using traffic prediction and spectrum conversion in elastic optical network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0050] refer to figure 1 , to further describe the specific implementation steps of the present invention.

[0051] Step 1, preprocessing network and service information.

[0052] Input the network topology of the elastic optical network, the link spectrum status information and the collection of service requests.

[0053] At least one node in the elastic optical network is randomly selected to place a spectrum converter.

[0054] Using the K shortest path method, three candidate paths for each service request in the service set are obtained.

[0055] Step 2, construct radial basis neural network RBFNN.

[0056] Build a three-layer radial basis neural network RBFNN, which is the input layer, hidden layer and output layer in turn; set the number of neurons in the input layer to 9, the number of neurons in the hidden layer to 10, and the output layer The n...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention proposes an RSA method combining service prediction and spectrum conversion in an elastic optical network, which is used to solve the problem of dynamic routing and spectrum allocation in an elastic optical network. The implementation steps are: first, select K candidate paths for all node pairs in the network; Then, predict the service request change information on the link, and calculate the comprehensive weight of each candidate path; secondly, judge whether the service request can be processed according to the spectrum constraints; finally, when all candidate paths do not meet the spectrum constraints, consider adding spectrum Converter to handle business requests. The invention uses radial basis neural network RBFNN prediction technology, not only considers the path length and spectrum occupancy, but also considers the competition degree of service request duration on the candidate path, combined with spectrum conversion, can effectively improve network performance , to provide an efficient resource optimization allocation solution for the needs of operators or data center interconnection.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to an RSA (Routing and Spectrum Assignment) method using service prediction and spectrum conversion in an elastic optical network EONs (Elastic Optical Networks) in the technical field of network communication. The present invention can complete route selection and frequency spectrum allocation for each randomly arriving dynamic service request in the elastic optical network. Background technique [0002] The elastic optical network EONs based on CO-OFDM (Coded optical-Orthogonal Frequency Division Multiplexing) can flexibly allocate appropriate spectrum resources according to the bandwidth requested by users, which has become one of the development trends of future optical networks. In elastic optical networks, the routing and spectrum allocation RSA problem is divided into routing sub-problems and spectrum allocation sub-problems. The network operator or network resou...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): H04L12/751H04L12/721H04L12/24H04Q11/00H04L45/02
CPCH04L45/08H04L45/124H04L41/147H04Q11/0062H04Q2011/0086
Inventor张水艳徐展琦贾文彬吴杰
OwnerXIDIAN UNIV