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Research and Implementation of the streaming system based on P2P networks

Author: LiuFei
Tutor: QinZhiGuang
School: University of Electronic Science and Technology
Course: Information and Communication Engineering
Keywords: P2P streaming media Gossip overlay network
CLC: TN919.8
Type: Master's thesis
Year: 2011
Downloads: 21
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Abstract


With the development of information technology and the prevalence of internet,the application of streaming media become more and mord widely.There are sorts of defects in traditional streaming model:such as the bottleneck and bad scalability in client/sever model,expensive cost and complexity in CDN,the problem of security,reliability and congestion controlling in IP multicast.Because of the viture of the good scalability and solving the problem of bottlenect of P2P network,P2P technology is being more and more widely used in the application of streaming media.Mesh structure is one of the most widely used application of streaming media,and Gossip is the most representative protocol in this P2P structure.However,there exists some defect in traditional Gossip.By improving the traditional Gossip protocol and proposing several improved mechanisms,this thesis designs a streaming media system called CuteStreaming based on improved gossip.The main work and innovation of this thesis are as follows:1.Study the related research results of P2P streaming media.Introduce the background of the technology of P2P streaming media,summary the related technology of the transmission of P2P streaming media.Analyze the basic principle of typical system corresponding to each technology and summary each system’s advantages and disadvantages.2.This thesis proposes a mechnism of adaptive topology maintaining to overcome Gossip’s ignoring the heterogeneity of nodes.Traditional Gossip protocol forwards message randomly,which will lead to large mount of redundant message.To solove this problem,the mechnism of effective message broadcasting is proposed.The randomness and uncertainty of forwarding message will lead to unsatisfied playback continuity and the mechnism of data prefetching is put forward to settle this.3.Porpose prescription priority scheme of data scheduling,which considers both the priority of data and lackness of resources.Develop the scheme from the following two respects:the bandwidth allocating of data requesting node and the bandwidth allocating of data supplying node.4.Based on improved Gossip protocols above in this thesis,the P2P streaming media system designed mainly consists of overlay network,the module of selecting and optimizing the data sending nodes,the module of data scheduling,the module of data prefetching,the module of network monitioring,the module of buffer managing and so on.Besides,this thesis presents the implementation and algorithms of every module.5.Design a simulating platform,Testing the function and performance of proposed system and analysising the test results,which proves the superiority of the system.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Image communication, multimedia communication
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