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Cache Layout System and Cache Method Based on Genetic Algorithm

A genetic algorithm and cache technology, applied in the field of cache layout system based on genetic algorithm, can solve problems such as increasing data volume, and achieve the effects of improving speed, reducing computational complexity, and improving utilization.

Active Publication Date: 2021-01-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thanks to SVC, all aspects of the caching strategy increase significantly, because the cache content that needs to be decided is not just one video file, but each video layer, and the amount of data processed is multiplied

Method used

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  • Cache Layout System and Cache Method Based on Genetic Algorithm
  • Cache Layout System and Cache Method Based on Genetic Algorithm

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Embodiment Construction

[0036]The technical scheme of the present invention will be further described below in conjunction with the drawings. In the following description, “node” refers to devices that communicate with each other and have a cache (Cache) in a communication network. Depending on the network used by users, it may be, for example, a mobile communication base station or a wireless access point. The current node refers to the device connected to the user, and the neighboring node is the node adjacent to the current node according to the network topology. This node and neighboring nodes form an area.

[0037]figure 1 It is a system structure diagram of a cache placement system based on genetic algorithms. The cache placement system is placed in the local cache (Cache) of the node. The system includes: user interface, request processing module, cache management module, local cache module, cache information module and Information monitoring and interaction module. Among them, the cache information mo...

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Abstract

The invention discloses a cache arrangement system based on a genetic algorithm, and a cache method. The method comprises the following steps: (1) obtaining a size matrix and a user demand matrix of some popular videos according to the user historical request information; (2) using the genetic algorithm to give a caching strategy of these videos; (3) when the request arrives, directly taking fromthe local cache region if the video is in the local cache region, and downloading from the neighboring node or remote server if not; and (4) calculating the total delay for each request to obtain an optimization of the delay after the cache. The invention may provide a caching strategy according to the popularity of the video and the user's request for different video quality requests, find the optimization degree of the delay to verify the correctness of the caching strategy, and continuously change the caching arrangement as the user demand information is continuously updated, thereby ensuring that the node continues to cache hot contents and gets a cache hit ratio that is asymptotic to the ideal cache method.

Description

Technical field[0001]The invention belongs to the technical field of mobile communication networks, and specifically relates to a cache arrangement system based on genetic algorithms.Background technique[0002]Today, mobile video services have entered a period of rapid development, driving the rapid growth of mobile video traffic services. Video on demand has become one of the main sources of income for operators and providers of wired and wireless networks. Video-on-demand services have high requirements for delay. In order to meet this growing video demand, how to achieve the smallest possible delay in video transmission is crucial.[0003]An effective way to achieve this goal is to cache the video content as close as possible to the end user, such as a mobile base station close to the user. The idea of ​​this distributed cache architecture has been proposed and used in content distribution networks and telecommunication content distribution networks, and has gradually been applied i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/231H04N21/239H04N21/2225H04N21/218G06N3/12
CPCG06N3/126H04N21/2181H04N21/2225H04N21/23103H04N21/23106H04N21/23113H04N21/2393
Inventor 周爱君蒋雁翔
Owner SOUTHEAST UNIV
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