摘要
随着流媒体实时应用的日益扩大,传统C/S(Client/Server)模式网络构架的服务器负载过重,导致QoS(Quality of Service)得不到保证,而P2P(Peer-to-Peer)网络具有负载均衡、可扩展性强、容错性强等优点。目前P2P技术开始逐步走向成熟,诸多学者对P2P流媒体系统缓存策略的研究愈演愈烈,本文提出的一系列P2P实时流媒体缓存策略,通过仿真实验,从系统开销、帧丢失率等方面对两者进行了性能对比。实验结果表明,本文提出的缓存策略有效的减少了数据块传输时延,并且在很大程度上避免了数据块的重复推送,降低了数据冗余。
With the live streaming media application growing, the server of traditional C/S(Client/Server) mode network archi-tecture overloads, which leads to naked QoS (Quality of Service).P2P (Peer-to-Peer) network has advantages of load balancing, scalability, strong fault tolerance and so on.P2P technology is coming to mature. Many scholars to study P2P streaming system cachingstrategy inten-siifed, this paper presents a series of real-time streaming P2P caching strategy, through simulation experiments, conducted a performance comparison between the aspect of the system overhead and frame loss rate. Experimental results show, this paper presents an effective cach-ing strategy to reduce the data block transmission delay, and largely avoid duplication of push data block, reduces the data redundancy.
出处
《软件》
2014年第4期12-17,共6页
Software
基金
国家自然科学基金
面上项目(61071077)
关键词
P2P
流媒体
分区概率
缓存策略
P2P
streaming media
Partition probability
Caching strategy
