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標題Title: The Key Technologies for a Large-scale Real-time Interactive Video Distribution
作者Authors: 郭宇航
上傳單位Department: 資訊工程系
上傳時間Date: 2013-12-31
上傳者Author: 郭宇航
審核單位Department: 資訊工程系
審核老師Teacher: 許子衡
檔案類型Categories: 課堂報告In-class Report
關鍵詞Keyword: Keywords- Peer-to-Peer network, real time, interactione, video distributation
摘要Abstract: Abstract—a real-time, interactive video distribution system on
Internet for large-scale users faces three bottlenecks: real-time
performance, interactive performance and bandwidth pressure.
This paper, based on the approach to establish a Real-time
Peer-to-Peer network (RTP2P) with the minimum video data
delay as the primary goal, and establish a hybrid framework of
P2P and centralized networks, argues that the goal of real-time,
interactive video distribution system for large-scale users is
able to be achieved. The key technologies include: greedy
scheduling algorithm, push-pull scheduling model, and the
hybrid network model. The test result proves, through an
online education system with 2000 simultaneous users, that the
end user’s video delay is within 10 seconds. Compared with the
normal P2P video streaming system with the delay varies
between 30 to 120 seconds, Real-time P2P is far more close to
C/S networks, the widely adopted network in China, the high
bandwidth cost of which restricts its promotion. In short,
RTP2P is a more real-time, lower bandwidth-costing network
to distribute video stream, saving more than 90% of the
bandwidth cost. This program is applicable to the field of large
scale users’ video real-time performance and interaction, such
as online education, chat rooms, multimedia social games, live
broadcasting, etc.

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