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Nodes Management and Data Distributing Machanism for P2P Streaming Media System Research

Author: WangYanWei
Tutor: LiuZuo
School: Shandong University
Course: Communication and Information System
Keywords: streaming media RTSP/RTP/RTCP nodes maintenances data schedule
CLC: TN919.8
Type: Master's thesis
Year: 2010
Downloads: 130
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Abstract


With the rapid development of Internet technology, users are no longer satisfied with simple services such as browsing the web page, sending or receiving E-mail. Streaming media applications are increasingly widespread. Streaming media always has the characters of large volumes of data, long duration, high bandwidth, and traditional Client/Sever model has poor scalability, poor utilization of network resources, needs high-performance streaming media servers. These factors severely restrict the development of streaming media service. CDN technology which evolved by the proxy server has to face the high cost, and limits in reliable transmission, flow control, congestion control and other aspects of the inherent limitations make IP multicast difficult to widely deployed in the streaming media system.In order to improve the performance of network streaming media services, researchers introduce P2P (Peer-to-Peer, peer networks) to streaming media services. By making some general computers in the networks carry out parts of the functions of streaming media server, excess tasks of the server are transfered to the network edge, which effectively reduces the pressure of servers and high consumption of some network bandwidth. Therefore, streaming media services based on P2P technology, has its inherent advantages and broad prospects for development.This paper describes related technologies about P2P and streaming media, and makes in-depth analysis of P2P streaming media system, and research the key technologies of P2P streaming media system, such as network search algorithms, data caching techniques, the node selection strategy, data distribution mechanism, and proposes a new nodes maintenance strategy and data distribution mechanism.At last, we evaluate the newly proposed nodes maintenance strategy and data distribution mechanism.This paper mainly include the following aspects:1. Analysis streaming media technology and the principle of streaming media protocol stack, study the implementation and their interactions principle of streaming protocol RTSP/RTP/RTCP.2. Analysis and evaluate the existing model of P2P streaming media applications on the network, make a comprehensive presentation and analysis, and compare them to sum up the pros and cons of various models.3. Analysis in-depth and study several key technologies which impact the performance of P2P streaming media system, such as internet search algorithms, data caching techniques, node selection strategies, data distribution mechanism4. Put forward a new nodes maintenance strategy to resolve the existing problems on the base of studying in-depth the existing strategy, and make the contrast with the original strategy.5. Bring forward a new data dissemination mechanism to resolve the problems in the existing data dissemination mechanisms on the base of studying in-depth the existing data dissemination mechanisms.

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