Child node, parent node and caching method and system for multi-layer video network

Abstract

The invention discloses a child node, a parent node, and a caching method and system for a multi-level video network, wherein the multi-level video network includes at least one parent node and a plurality of child nodes connected to the parent node, and the method includes: collecting each The user request arrival rate of each child node for each content in the content set; determine the optimal data rate for each child node for each content based on the user request arrival rate, the storage capacity and upload bandwidth of each child node, and the size of each content Storage strategy and optimal upload bandwidth allocation strategy. Through the above disclosure, the technical solution disclosed in the present invention can fully save network bandwidth, realize cooperation among cache nodes, and be compatible with heterogeneous network resource environments.

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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