ICN logical topology construction method based on SDN

A construction method and a technology of logical topology, applied in the Internet field, can solve the problems that the ICN network topology reconstruction cannot be directly applied, and the dynamic change characteristics of the network are not considered.

Active Publication Date: 2016-05-04
GUANGDONG POLYTECHNIC NORMAL UNIV +1
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Problems solved by technology

[0005] The research scope of the above methods is limited to undirected and unweighted complex networks, and they do not consider the dynamic characteristics of the network, so they cannot be directly applied to the network topology reconstruction of ICN.

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  • ICN logical topology construction method based on SDN
  • ICN logical topology construction method based on SDN
  • ICN logical topology construction method based on SDN

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Embodiment Construction

[0030] The schematic diagram of the implementation framework of the present invention is as figure 2 shown.

[0031]Step1: The SDN control plane perceives the network resources and network status of the ICN, and sends it to the controller to complete the generation of the logical topology reconfiguration strategy. During the generation process of the logical topology reconfiguration mechanism, such as image 3 As shown, two aspects of work are mainly completed: logical closing link and logical adding link. The specific implementation method is as follows:

[0032] Logical link closing strategy: First, according to the perception of network link traffic faced by SDN control, a spatial hidden Markov model is constructed. Then, determine the set of logically closed links, and implement this scheme through the SDN data plane. The logical shutdown link determination proposed in this project is divided into two stages: model training and link shutdown decision (real-time evaluati...

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Abstract

The invention provides an information center network (ICN) logical topology construction method based on software defined networking (SDN) and belongs to the technical field of the internet. Due to the fact that the ICN framework undergoes fundamental change compared with the TCP / IP framework, the existing network topology structure and ICN flow distribution are not matched, and in order to achieve matching between the topology structure and ICN flow distribution, by means of the method, reconstruction of network logical topology is achieved through a logic closing link mechanism and a logic adding link mechanism. To be specific, firstly, aggregation of a logic closing link is determined in real time through a hidden markov model in a spatial state transition graph which is constructed according to ICN flow distribution and has hidden markov characteristics; secondly, link aggregation and corresponding bandwidth are added through the maximum-flow minimum-cut theorem positioning logic in a weighting directed complex network constructed according to ICN flow distribution. By means of the method, an effective path is provided for further optimization of ICN flow.

Description

technical field [0001] The invention belongs to the technical field of the Internet and relates to providing an effective way for further optimization of ICN flow. Background technique [0002] In order to adapt to the transformation of Internet applications from the end-to-end communication mode driven by the sender to the mass content acquisition mode driven by the receiver, and at the same time enhance the network's support for security, service quality, mobility, scalability, etc., the researchers In recent years, a new type of information-centric network architecture has been proposed, collectively referred to as Information-Centric Networking (ICN). In order to alleviate the severe pressure on network bandwidth caused by the rapid growth of network traffic, ICN has added a built-in cache for the entire network. Existing research shows that the performance improvement obtained by optimizing network traffic only by means of an isolated caching mechanism in ICN is limite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
CPCH04L41/12
Inventor 蔡君
Owner GUANGDONG POLYTECHNIC NORMAL UNIV
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