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A P2P Download Algorithm Based on Blocking and Switching Servers

A server and node server technology, applied in the Internet field, can solve problems such as node server network bandwidth performance changes, and achieve the effect of improving accuracy

Inactive Publication Date: 2018-03-09
安徽小马创意科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, formula (2) ignores a problem, the network bandwidth performance of the node server is always changing during the download process

Method used

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  • A P2P Download Algorithm Based on Blocking and Switching Servers
  • A P2P Download Algorithm Based on Blocking and Switching Servers
  • A P2P Download Algorithm Based on Blocking and Switching Servers

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Experimental program
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Embodiment Construction

[0049] The meaning of the technical vocabulary involved in the present invention is explained as follows:

[0050] The degree of network heterogeneity refers to the difference in bandwidth performance of servers in the entire peer-to-peer coverage network, that is, the difference in bandwidth between the server with the largest bandwidth and the server with the smallest bandwidth. The higher the degree of heterogeneity, the greater the difference in bandwidth.

[0051] Normalized standard deviation: Refers to the user's download bandwidth fluctuations. The smaller the standard deviation, the smaller the bandwidth fluctuation.

[0052] Download ratio: the number of node servers with file blocks / number of users. The smaller the download ratio, the more users there are in the network, or the fewer node servers, the more congested the download environment.

[0053] Blocking ratio: (the judgment bandwidth that the current node will be blocked / the upload bandwidth of the current...

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PUM

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Abstract

The invention relates to a P2P downloading algorithm based on blocking switching servers. The algorithm first calculates the average bandwidth of node servers in the network, and then determines the blocking conditions. According to the blocking conditions, users and node servers with low performance are blocked, and the nodes with large average value of load are continuously selected. The server is connected, that is, the node server with high performance is connected, so as to improve the download efficiency of the client. This algorithm reduces the normalized standard deviation of the overall network, and the reduction of the normalized standard deviation means that the bandwidth fluctuation of the entire coverage network becomes smaller, so that the remaining download time can be predicted more accurately. As the normalized standard deviation of the overall coverage network decreases, the average download time of users will gradually decrease. The simulation experiment proves that the average performance of the algorithm of the present invention is improved by 113% of the traditional algorithm in a non-competitive environment. Although the average performance is only improved by 1% in a competitive environment, the accuracy of estimated download time is increased by 44%.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a P2P download algorithm based on blocking switching servers. Background technique [0002] With the rapid development of the Internet, users have higher and higher requirements on the quality of Internet access. In P2P (peer-to-peer peer-to-peer) network. The way for users to download files is to choose the node server with the best bandwidth performance. However, the variability of the P2P network leads to very unstable server performance, which affects the user's download speed and the estimation of the remaining download time. In the current research, the way to increase the user's download rate is to maximize the utilization of gradually reduced bandwidth when the server performance drops, and to select the optimal server for downloading by changing the connected server. The premise of the implementation of these two methods is to evaluate the network by calculating ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L12/801
CPCH04L47/10H04L67/104H04L67/565
Inventor 杨梦宁罗杨洋徐玲洪明坚葛永新张小洪杨丹
Owner 安徽小马创意科技股份有限公司