Child node, father node and cache method and system for multi-level video network

Abstract

Disclosed are a child node, father node and buffer method and system for a multi-layer video network. The multi-layer video network comprises at least one father node and a plurality of child nodes connected to the father node. The method comprises: collecting the user request arrival rate for each content in the content set of each child node; and based on the user request arrival rates, the storage capacity and uploading bandwidth of each child node and the size of each content, determining an optimal storage policy and an optimal uploading bandwidth allocation policy of each child node for each content. By means of the above disclosure, the technical solution disclosed by the present invention can fully conserve the network bandwidth and enable cooperation among buffer nodes; in addition, the technical solution is compatible with a heterogeneous network resource environment.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a child node, a parent node, and a caching method and system for a multi-layer video network. Background technique [0002] With the rapid development of computer network technology and infrastructure construction, multimedia network services such as high-resolution video on demand provided by multimedia service providers are gradually emerging. These services usually utilize the bandwidth and storage resources in the cache system to provide high-quality and uninterrupted video streams to end users. However, the ever-increasing number of users and higher demands on service quality have also brought great pressure to service providers. The overall bandwidth and storage resources of the video-on-demand system are limited, so service providers have to increase investment in infrastructure construction to meet the growing user needs. In this context, how to effectivel...

AI Technical Summary

Problems solved by technology

[0006] 2. A content with the second highest attention is only stored on some underlying nodes;

[0007] 3. The remaining content with low attention is only stored in a certain underlying node

[0009] The method of the prior art has the following defects: the method assumes that the overall resources of the system are isomorphic

However, in an actual large-scale video system, the capacity of the server is usually heterogeneous, and users in different regions often have different patterns for content requests; this method fails to reflect the bandwidth consumption characteristics of the current video system. In the caching strategy design of the video system, the path length should not only be used as the measurement standard of the system performance, but also the problem of limited bandwidth resources should be considered

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