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An In-Network Video Cache Method Based on Joint Cache Architecture

A technology for caching video and video, applied in the field of communication, can solve problems such as low efficiency, high algorithm complexity, and inability to effectively solve the problem of dynamic request mode

Active Publication Date: 2019-07-02
陕西尚品信息科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, due to the contradiction between the number of videos in the Internet and the user's video needs and the limited storage capacity and link bandwidth, it is difficult to efficiently cache videos in the network
[0003] The deficiencies of the current solutions to the video caching problem in the network are: (1) relying on static configuration and time-average request arrival rate, which cannot effectively solve the problems arising in the dynamic request mode; (2) solving video caching at the same time Problems and source node selection problems lead to high complexity of the algorithm, and it takes a long time and the efficiency is too low

Method used

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  • An In-Network Video Cache Method Based on Joint Cache Architecture
  • An In-Network Video Cache Method Based on Joint Cache Architecture

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Embodiment Construction

[0057] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can understand the solution of the present invention more clearly, but the protection scope of the present invention is not limited thereby.

[0058] Such as figure 1 As shown, the video caching method in the network based on the joint caching architecture described in the present invention is specifically as follows:

[0059] Step 1: Cache a specific video on all nodes.

[0060] For the convenience of description, let M be the set of all nodes i in the network; N be the set of all videos k that need to be cached; S k is the size of video k; λ i k Indicates the probability that node i receives a user request for video k, where λ i k ∈[0,1], can be calculated or predicted through historical statistics; y i k Indicates whether there is video k, y in the cache of node i i k = 0 means there is no video k, ...

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Abstract

The invention discloses a video cache method in a network based on a joint cache architecture. The implementation plan is: in the network using the joint cache architecture, reserve a part of the total cache space with a ratio of α to cache the most popular videos, and use the remaining space to ensure that the network caches all videos. Moreover, after the video cache is completed, according to the video request mode and the dynamic change of the link state information, the best video source node is found for the video requester. The invention effectively solves the problem of video caching in the network, can ensure reliable and efficient storage and calling of video data in the mobile network, saves system bandwidth, and effectively reduces network delay costs.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an intra-network video caching method based on a joint caching architecture. Background technique [0002] With the rapid development of the mobile Internet and the rapid growth of online video content, it is particularly important to improve end-user experience and reduce user costs when caching video in the network. However, due to the contradiction between the number of videos in the Internet and the user's video needs, and the limited storage capacity and link bandwidth, it is difficult to efficiently cache videos in the network. [0003] The deficiencies of the current solutions to the video caching problem in the network are: (1) relying on static configuration and time-average request arrival rate, which cannot effectively solve the problems arising in the dynamic request mode; (2) solving video caching at the same time The problem and the source node se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/231H04N21/647H04L29/08
CPCH04N21/23106H04N21/64723H04L67/5682H04L67/63
Inventor 林木森刘涛刘轩
Owner 陕西尚品信息科技有限公司
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