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A Collaborative Caching Method Based on Cournot Game in Fog Computing

A collaborative caching and fog computing technology, applied in the field of fog computing, can solve the problems of repeated transmission, occupation of network bandwidth resources, and great impact on user experience, so as to improve the cache hit rate, reduce requests, and enrich the types of content.

Active Publication Date: 2021-04-27
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When network traffic peaks, a large number of mobile terminal users request relatively popular content, causing the popular content to be repeatedly transmitted in the network, occupying limited network bandwidth resources, and greatly affecting user experience

Method used

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  • A Collaborative Caching Method Based on Cournot Game in Fog Computing
  • A Collaborative Caching Method Based on Cournot Game in Fog Computing
  • A Collaborative Caching Method Based on Cournot Game in Fog Computing

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Embodiment 1

[0089] combine figure 1 , the cooperative caching method based on the Cournot game in the fog computing of the present invention, the parameters in each step are as follows:

[0090]The diameter of geographic range is 1000m; the total number of requested content is V=2500; the size of a single request content is 1 (unit cache block size); the fog server node N∈[2,8]; the number of user terminals M=1000; Loose distribution; single node cache capacity C∈[50,100]; Zipf parameter σ∈[0.6,1.2]; cache period T=3600; collaboration ratio R∈[0.4,0.8]; bandwidth between user terminal and fog server node 100MHz; Bandwidth between fog server nodes and cloud content center 10 4 MHz; where the parameters of the Cournot game a=0, b=1, τ=1.

[0091] The Link Minimal Cost (LMC) algorithm proposed in this patent also selects the traditional caching algorithm First In First Out (FIFO) algorithm, Least Recency Used (LRU) algorithm, Random (Random) ) algorithm as a comparison algorithm to compar...

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Abstract

The invention discloses a collaborative caching method based on Cournot game in fog computing. The method is as follows: first, divide the fog server nodes into cooperative and non-cooperative parts according to the cooperation ratio; then cache the requested content of the user terminals in the autonomous domain of each server node, and perform passive content caching in combination with the requested content and link cost; finally, through The Cournot game schedules the same request content between different fog server nodes, so that the request content obtains the minimum link cost in the entire cache system, and finally improves the space utilization rate in the cache system. The present invention makes full use of the cooperative cache among the fog server nodes, enriches the content types of the entire cache system, reduces the request for content acquisition from the cloud content center, and improves user terminal experience.

Description

technical field [0001] The invention belongs to the technical field of fog computing, in particular to a cooperative caching method based on a Cournot game in fog computing. Background technique [0002] With the rapid development of the mobile Internet, a large number of mobile smart devices are connected to the Internet. Traditional cloud computing faces increasingly prominent problems when dealing with such massive user requests, such as high latency, weak geographic location awareness, and poor mobility support. As an extension of cloud computing, fog computing greatly makes up for various deficiencies of traditional cloud computing. Fog computing is a highly virtualized middle layer between user terminals and cloud content centers. Fog computing provides computing, storage, and network services for user terminals. Different from the centralized control framework of cloud computing, fog computing deploys server nodes in a geographical location closer to user terminals ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
CPCH04L67/1097H04L67/5682H04L67/568
Inventor 涂亮徐雷李千目杨余旺
Owner NANJING UNIV OF SCI & TECH