CAJ | 학술논문

为解决媒体流在网络直播的低延迟与可扩展性，结合P2P的特点，研究了一种基于P2P的自适应网络快速传输模型。该模型首先对网络节点状态进行分类，通过一种位索引机制实现节点状态的识别，接着在MST 覆盖网络基础上，探讨了一种面向请求节点构建MST的P2P媒体直播系统，并提出了一种自适应网络快速传输控制算法。数学模型分析与模拟结果表明提出的模型能较大程度地缩短端到端传播的延迟时间，且减少跳点数与服务负载，从而进一步提升了媒体播放的流畅性，为采用P2 P技术实现媒体的快速直播提供了很好的参考与借鉴。
위해결매체류재망락직파적저연지여가확전성，결합P2P적특점，연구료일충기우P2P적자괄응망락쾌속전수모형。해모형수선대망락절점상태진행분류，통과일충위색인궤제실현절점상태적식별，접착재MST 복개망락기출상，탐토료일충면향청구절점구건MST적P2P매체직파계통，병제출료일충자괄응망락쾌속전수공제산법。수학모형분석여모의결과표명제출적모형능교대정도지축단단도단전파적연지시간，차감소도점수여복무부재，종이진일보제승료매체파방적류창성，위채용P2 P기술실현매체적쾌속직파제공료흔호적삼고여차감。
To address the problem of low delay and scalability on media living streaming in internet ,combing the char‐acteristic of P2P ,this paper investigates a model of adaptive fast‐forward on P2P system .Firstly ,the model classifies peers according to its status ,then achieves the peers status by identifying mechanism on bit index .Based on minimum spanning tree(MST) overlay ,a media living system using request peer to construct MST is discussed ,also an algorithm of adaptive fast‐forward control is proposed .The analysis of mathematical model and simulation results show that our model can widely shorten the delay between ends and reduced hops count and server load so as to further promote smooth for media playing . Similarly ,our model can provide a valuable reference for implementing media fast living on P2P system .