NeTS:Small:View-Upload Decoupling: A Redesign of Multi-Channel P2P Video Systems

NeTS:Small:查看-上传解耦：多通道 P2P 视频系统的重新设计

• 批准号: 0916734
• 负责人: Yong Liu
• 金额: $ 40万
• 依托单位: Polytechnic University of New York
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0916734&HistoricalAwards=false
• 关键词: NeTS; Small; View; Upload; Decoupling

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Although there are several large-scale industrial deployments of peer-to-peer (P2P) live video systems, these existing systems have several fundamental performance problems, including huge channel switching delays, large playback lags, poor performance for less-popular channels, ISP unfriendliness. In these traditional systems, a peer only redistributes the video it is currently watching. In this research, the PIs are exploring a radically different approach to P2P live video streaming, View-Upload Decoupling (VUD). The main idea of VUD is to have each peer distribute one or more channels, with the assignments being made independently of what the peer is viewing. This novel approach has three major advantages over the traditional isolated-channel designs: channel-churn immunity; cross-channel multiplexing; and the enabling of structured streaming. The PIs are developing tractable analytical performance models for multi-channel P2P video streaming systems, for both VUD and traditional design approaches. The analytical results not only highlight the advantages of the VUD approach, but also provide important ``rules-of-thumb'' for the design of VUD systems. The PIs are developing dynamic VUD provisioning algorithms that are both robust with respect to channel churn and also adapt to dynamic channel popularity and flash crowds. The PIs are developing VUD provisioning, management and streaming schemes that take into account ISP locality and largely reduce the video streaming traffic imposed on ISP networks. The PIs and their PhD students are also developing an open-source VUD prototype.

该奖项是根据2009年的《美国回收与再投资法》（Publy Law 111-5）资助的。尽管有几个大规模的点对点工业部署（P2P）实时视频系统，但这些现有系统存在一些基本的性能问题，包括巨大的频道切换延迟，大型播放，大型播放，较差的绩效，较少的绩效绩效，较小的popopopular channellesseliness inspull unfriendselless，是unefriend insp unfriendselenses。在这些传统系统中，同伴仅重新分发它当前正在观看的视频。在这项研究中，PI正在探索P2P实时视频流，观看式解耦（VUD）的根本不同的方法。 VUD的主要思想是让每个同行分发一个或多个频道，而分配是独立于同伴观看的。这种新颖的方法比传统的孤立通道设计具有三个主要优势：频道换取免疫力；跨通道多路复用；以及结构化流的启用。 PI为VUD和传统设计方法开发了可用于多渠道P2P视频流系统的可进行的分析性能模型。分析结果不仅突出了VUD方法的优势，而且还为VUD系统的设计提供了重要的``thumb shumb''。 PI正在开发动态VUD供应算法，这些算法在频道流动方面既有强大又适应动态通道的受欢迎程度和闪存人群。 PI正在开发VUD供应，管理和流媒体方案，这些方案考虑了ISP区域，并且很大程度上减少了ISP网络上施加的视频流流量。 PI及其博士生也正在开发开源VUD原型。