Analysis of adaptive streaming for hybrid CDN/P2P live video systems

摘要: Most commercial video streaming systems rely on Content Distribution Networks (CDNs) to distribute content. HTTP adaptive has been recently adopted by major providers and is now considered the standard technique used with CDN-based systems. Despite success of these systems, cost-effective scalability continues be concern in their design deployment. To address this, recent work proposed use hybrid CDN Peer-to-peer (P2P) live The aims combine P2P desirable performance properties However, streaming, not explored extensively such Designing operating an system very challenging. Two decisions are critical operation any system. first one bitrate adaptation strategy which specifies how different bitrates assigned users while maximizing user satisfaction. second defining operational guidelines for switching between modes efficiently utilizing available resources. In this paper we present a model analysis CDN-P2P objective answering two questions. We stochastic fluid single obtain theoretical results guide as described above. then extend case multiple bitrates. linear optimization problem best strategy. validate our using simulations. Our conclusion that can significantly improve ability satisfy more higher over