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Network-transmission-overhead-based data migration method

A data and overhead technology, applied in transmission systems, electrical components, etc., can solve the problems of lack of consideration, low practicability, and reduce network transmission overhead, and achieve the effect of reducing the probability of failure and reducing the burden

Active Publication Date: 2014-12-10
ZHENGZHOU SEANET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The network coding method has high computational complexity and is not very practical in the actual P2P streaming media system; the traditional data backup method is mostly used in the file sharing system, the starting point is only to increase the number of copies of the file in the network, and does not consider the time of data backup. How to minimize the network transmission overhead so as not to affect the normal data sending and receiving between nodes

Method used

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Embodiment Construction

[0016] The invention proposes a data migration method based on network transmission overhead. This method first migrates more popular data needed by neighboring nodes, and at the same time fully considers the network transmission overhead during the migration, and preferentially selects the neighboring nodes with a smaller transmission overhead ratio as the target node for migration.

[0017] figure 1 The flow of one implementation approach taken to achieve the above data migration is shown:

[0018] (Step 1) The node counts the data blocks that already exist in its own cache;

[0019] (Step 2) Calculate the utility value of each existing data block according to the data block utility function,

[0020] (Step 3) Arrange the data blocks in descending order of utility value to form a migration data block queue Que data ;

[0021] (Step 4) Calculate the transmission overhead ratio of the node itself and all neighbor nodes, and arrange the neighbor nodes in ascending order of ...

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Abstract

The invention discloses a data migration method for a peer-to-peer (P2P) streaming media system. Media data is backed up in a P2P network by calculating a utility value of a data block and the transmission overhead ratio of neighbor nodes. By the method, the probability of invalidation of data distributed by a server in the network due to the dynamics of nodes can be reduced; and the bandwidth resources of the nodes are fully utilized, so that the load of the server is reduced, and the expandability of the system is improved.

Description

technical field [0001] The present invention relates to the technical field of computer network streaming media, and more specifically, the present invention relates to a data migration method in a P2P streaming media system. Background technique [0002] With the development of the Internet and the popularization of broadband applications, using the network to provide streaming video services is becoming a hot spot in network applications. Streaming media technology is a streaming transmission technology that transmits multimedia data in real time on the network. Traditional streaming media systems based on client / server architecture have poor scalability due to the limitation of server bandwidth and processing power. As an effective solution, P2P (Peer-to-Peer) peer-to-peer network technology has been greatly promoted in recent years. In the P2P mode, since each node has the functions of client and server, each node sends data to other nodes while receiving data from othe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
Inventor 王劲林任浩尤佳莉苏杭
Owner ZHENGZHOU SEANET TECH CO LTD