Intelligent re-routing method and device based on congestion sensing in software-defined network

A software-defined network and intelligent technology, applied in the field of communication, can solve problems such as rigid selection of backup paths and failure to consider network effects of rerouting paths

Active Publication Date: 2018-09-14
XI AN JIAOTONG UNIV
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  • Claims
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Problems solved by technology

Ignoring the characteristics of network status changes, the selection of backup paths is too rigid, and the network effects brought about by rerouting paths are not considered

Method used

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  • Intelligent re-routing method and device based on congestion sensing in software-defined network
  • Intelligent re-routing method and device based on congestion sensing in software-defined network
  • Intelligent re-routing method and device based on congestion sensing in software-defined network

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Embodiment Construction

[0065] The content of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0066] In the examples of the present invention: 1. The software-defined network communication environment is a necessary condition, figure 1 is a concrete manifestation of the necessary conditions, figure 2 yes figure 1 The data stream processing flow; Two, path congestion quality evaluation is one of characteristics of the present invention, image 3 is the process of path congestion quality evaluation, Figure 5 , Image 6 and Figure 7 is the fuzzy relationship of the evaluation parameters of the congestion quality evaluation process; three, the path selection method is the core of the present invention, Figure 4 is the flow of the path selection method.

[0067] The implementation environment of the present invention is divided into user access layer 104 , data layer 103 , control layer 102 and application layer 101 . The user ...

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Abstract

The invention discloses an intelligent re-routing method and device based on congestion sensing in a software-defined network. The method comprises the following steps: a network monitoring module ofa control layer collects and computes a network state of a data layer at fixed time after the initialization; a congestion detection module of the control layer performs fuzzy evaluation on two indexes of link used load ratio and link load change rate so as to obtain a fuzzy evaluation value of the current link congestion quality, and obtaining the congestion quality fuzzy evaluation value of thispath according to the average congestion degree of all links on the path; after the congestion detection module of the control layer accomplishes the congestion quality evaluation of all alternativepaths, a path selection module and the congestion detection module establish connection with the network monitoring module to acquire a path selecting parameter, thereby selecting the optimal path ofthe data stream transmission. The invention provides an intelligent congestion-avoidance routing selection method for the data stream in the network, and the network performance and the user quality of service experience are effectively improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a congestion-aware intelligent rerouting method and device in a software-defined network. Background technique [0002] With the continuous emergence of new networks such as the Internet of Things, mobile Internet, and cloud computing networks, streaming media data has shown explosive growth, and network link congestion has become increasingly serious. The distributed architecture of traditional networks lacks control over network resources and global information, so it is difficult to efficiently utilize network resources. The software-defined network architecture breaks the design concept of traditional network systems and separates the centralized control plane from the distributed data plane. It can not only realize the global optimization and centralized control of the control plane, but also realize high-performance network forwarding capabilities. The software-defined ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/725H04L12/727H04L12/729H04L45/121H04L45/125
CPCH04L45/121H04L45/123H04L45/124H04L45/125H04L45/302H04L45/70
Inventor 曲桦赵季红仝梦菲陈梁骏赵建龙李彬
Owner XI AN JIAOTONG UNIV
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