Content center network caching method based on software defined network

A content-centric network and software-defined network technology, applied in data exchange networks, electrical components, digital transmission systems, etc., can solve the problem of difficult management of content stored in storage nodes by caching strategies, reduce path extension rate, and improve cache hits. rate effect

Active Publication Date: 2017-08-29
XI AN JIAOTONG UNIV
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Problems solved by technology

However, the existing caching strategy is still a technical di

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  • Content center network caching method based on software defined network
  • Content center network caching method based on software defined network
  • Content center network caching method based on software defined network

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Embodiment Construction

[0046] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0047] The present invention proposes a caching strategy for a content-centric network based on software-defined networking, and utilizes the advantages of logical centralization and perception of the entire network under the converged architecture of software-defined networking and content-centric network. According to the global network topology and content information, and perform centralized and overall cache optimization on the content; this method uses the importance and edge of nodes and the popularity of content to carry out overall cache optimization mathematical modeling, and applies particle swarm intelligence algorithm in the optimization process to speed up The speed at which the cache optimization converges. The cache decision algorithm proposed by the invention can obviously improve the cache hit rate and reduce the path extension rate....

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Abstract

The invention provides a content center network caching method based on a software defined network. Under a fused architecture of the software defined network and a content center network, concentrated control and overall cache optimization are performed on caching nodes and content via perception of a controller on overall network topology and cached information. The controller periodically makes statistics on the cached information, and then performs cache optimization according to a data layer cache decision-making request. According to the method provided by the invention, an importance degree and an edge degree of the nodes and the popularity of content are brought into a cache decision-making strategy, mathematical modeling is performed according to the above information, and a particle swarm intelligent algorithm is used for optimizing the mathematical model. The method provided by the invention fully utilizes advantages of the controller on overall control and logic centralization, and thus the cache can perform decision optimization under multi-node coordination.

Description

technical field [0001] The invention belongs to the caching decision-making strategy under the fusion architecture of software-defined network and content-centric network, and relates to the programmability of the controller for data layer operation, and the caching of content by the controller according to the information sensed by the whole network and applying the particle swarm intelligent algorithm decision making. Background technique [0002] In the face of massive Internet traffic dominated by real-time audio and high-definition video, the traditional network architecture based on TCP / IP has huge challenges in terms of availability, mobility, scalability, security, etc., and it is difficult to meet the requirements of current network development. [0003] Content-centric networking (CCN) is considered to be an effective way to solve existing network problems. The content-centric network obtains content in a user-driven mode, and the user sends a content request, and...

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Application Information

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IPC IPC(8): H04L29/08H04L12/24
CPCH04L41/12H04L41/142H04L41/145H04L67/10H04L67/568
Inventor 曲桦赵季红刘军李岩松赵东坡马慧
Owner XI AN JIAOTONG UNIV
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