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P2P data scheduling method based on feature priorities

A data scheduling and prioritization technology, which is applied in image communication, selective content distribution, electrical components, etc., to achieve the effect of solving freezes and reducing start-up delay

Active Publication Date: 2017-11-24
NANJING NANYOU INST OF INFORMATION TECHNOVATION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This strategy comprehensively considers the characteristics of various shards and effectively solves the defects of traditional shard scheduling strategies, so as to ensure the smoothness of video playback and provide a good user experience

Method used

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  • P2P data scheduling method based on feature priorities
  • P2P data scheduling method based on feature priorities
  • P2P data scheduling method based on feature priorities

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] When the user selects video content, the common node first sends a video resource location request to the index server. The index server will then return a list of common nodes that can provide the video content to the node that sent the request. Then, the node that sends the request will select a part of serviceable nodes that provide video resources for it from the returned list according to the node selection strategy. Finally, the requesting node will establish a connection with these selected serviceable nodes and download the video content from them. The slice scheduling method in th...

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Abstract

The invention discloses a P2P data scheduling method based on feature priorities, through which the problem of the traditional fragment scheduling strategy that only some types of fragments are given attention while other types of fragments are ignored is solved. The method is characterized in that the fragments are divided into four types, i.e., emergent fragments, anchor fragments, rare fragments and ordinary fragments, according to fragment features; anchors are set according to request frequencies of the video fragments, instead of in a manner that a video is simply equally divided in the traditional anchor strategy; and downloading priorities of all the types of fragments are set from high to low, and downloading of the fragments with a lower priority is started upon completion of downloading of the fragments with a higher priority, until all the four types of fragments are downloaded. The method adopting the fragment scheduling scheme has the advantages that good user operation experience is provided while high video playing smoothness is ensured, and the number of copies of the rare fragments in a system is increased.

Description

technical field [0001] The invention is a P2P data scheduling strategy based on feature priority, which belongs to the technical field of multimedia communication. Background technique [0002] In recent years, the application of P2P-based video-on-demand services has developed rapidly, and related technologies have been highly valued by researchers. In a P2P video-on-demand system, there are multiple peer nodes. Each peer node can act as server and client at the same time. Since most video transmission occurs between peer nodes, the pressure on the video server is effectively reduced. However, in the P2P network, there are also problems such as low video-on-demand service quality and low utilization of network node computing resources. Mixed strategies, etc. [0003] The emergency strategy means that the node preferentially selects the segment closest to the current playback time for download. The patent with the publication number CN102025645A proposes an emergency sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/845H04N21/63H04N21/472H04N21/24
CPCH04N21/2407H04N21/2408H04N21/47202H04N21/632H04N21/8456
Inventor 周亮吴道亮陈建新肖俊袁佳欣
Owner NANJING NANYOU INST OF INFORMATION TECHNOVATION CO LTD
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