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Network coding in P2P streaming media live

Author: LiDiSheng
Tutor: LongKePing
School: University of Electronic Science and Technology
Course: Communication and Information System
Keywords: P2P technology Live streaming Network coding
CLC: TN919.8
Type: Master's thesis
Year: 2011
Downloads: 53
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Abstract


With the increase of Internet users , network technology , network application services to large-scale development , but the traditional client / server mode allows the system to expand the limited performance of P2P network technology is proposed larger development ; P2P streaming system suitable for very large network video streams became popular , rich Internet applications , to solve the original problem due to the limitations of server deployment overhead , there was the new direction of development and problems . This paper first introduces the P2P technology combined with P2P technology streaming system , introduced their characteristics , development and application trends ; then focus on the technical characteristics of P2P live streaming systems , and P2P streaming based on network coding the strengths and weaknesses of the key technologies of the media broadcast system . For P2P Live Streaming System based on network coding can not be well adapted to the status quo of the heterogeneous network environment , proposed a design based on network coding and scalable video SVC P2P streaming media broadcast system to adapt to the P2P live streaming systems that may appear in the new situation , the full realization of network coding to enhance system performance . The program consists the tracker server node connection management, pre-processing of the the convection packet data transmission , data encoding and decoding process of the network with the policy part , the implementation of the intergenerational network coding and streaming layered coding . The program is judged according to the different network or node position of part or all of the source data transmission network coding , the receiving node to decide whether to request the sending node sends the enhancement layer data based on bandwidth conditions , to reduce the startup delay , and to improve the quality of the overall playback . The contrast simulation test results, under different network conditions , with respect to the existing P2P live streaming systems , the use of the transmission scheme based on network coding in this article must improve playback quality and playback continuity node .

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