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Adaptive streaming media caching method

An adaptive streaming media and streaming media technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of low utilization of streaming media cache, improve user access quality, reduce costs, and reduce storage. cost effect

Inactive Publication Date: 2013-11-27
GUANGDONG UNIV OF TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0009] The main purpose of the present invention is to overcome the problem that the streaming media cache utilization rate is not high in the prior art, and propose a kind of adaptive streaming media cache method with high cache utilization rate

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Embodiment Construction

[0040] The present invention will be further described below with reference to the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0041] The Zipf distribution law is used to evaluate the streaming media. From the Zipf distribution law, the law of 28 can be obtained, that is, 80% of users only access 20% of the streaming media content. From this, 20% of streaming media can be defined as high-favorite streaming media, and 80% of streaming media can be defined as low-favorite streaming media. The present invention proposes different caching strategies according to the difference in the popularity of streaming media.

[0042] Combined with the hit rate of high-heat streaming media and the idleness of cache space, the caching method for 20% high-heat streaming media:

[0043] i. When there is cache space, cache 20% of the high-heat streaming media to the edge server in turn according to the streaming media heat until the cache space ...

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Abstract

The invention discloses an adaptive streaming media caching method. Combined with the behavior analysis of user access, different caching methods are employed for streaming media of different heat degrees. For 20% high heat degree streaming media, the caching method is that the streaming media is all cached when a caching space is sufficient, and an effect of fully using the space is achieved. When the caching space is insufficient, a strategy of getting 50% of the caching space with low hit rate can realize the purpose of greatly saving space and reducing cost in the condition that a user experience degree is basically satisfied. For 80% low heat degree streaming media, a model is fit according to the play on demand behavior of a user, as an adaptive template, the caching space is initialized, then according to the concrete play on demand behavior of the user, a caching segment is dynamically added and deleted, thus in one hand, the caching space is greatly saved in the initialization, the storage cost is saved, on the other hand, the number of catch replacement is reduced as much as possible, and the effect of reducing transmission cost is achieved.

Description

technical field [0001] The present invention relates to the technical field of value-added services of telecommunication networks, and more particularly, to an adaptive streaming media caching method. Background technique [0002] With the popularization of the Internet and the maturity of digital video technology, streaming media systems such as video-on-demand (VOD), distance education and interactive games have also developed rapidly. Compared with traditional static media, streaming media has the characteristics of large amount of content data, high delay sensitivity and strong interactivity. In the existing CDN-based streaming media system, the streaming media source server and the streaming media proxy server are the key platforms and core devices for providing streaming services. The streaming media source server is generally located in the IP core network and is used to store streaming media files, respond to user requests, and send streaming media data to the termi...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06G06F17/30
Inventor 谢胜利蒋业文何昭水李爽梁啟成吴宗泽李石清李其力张坤
Owner GUANGDONG UNIV OF TECH
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