Research and experiments of Full Distribution P2P-CDN System

• 1、State Key Laboratory of Networking and Switching Technology Beijing University of Posts & Telecommunications

Abstract：Based on the facts that number of customers of IPTV is quite large, customers are mostly discretely scattered and that requirement for QoS is high, facility providers and ISPs usually use CDN system as the practical percept when building IPTV system. Thanks to the features, like leveled structure, load balance and edge-node content pushing, of CDN system, it serves IPTV service very well. As the number of customers keeps expanding and that more new related service become available, current CDN system has to face the problems such as lacking in scalability and high cost to upgrade. So we need to improve current CDN system from the aspect of technologies to make it adaptable with the growth of IPTV service. Currently one of the solutions for such problem is to form a new P2P-CDN system by combining P2P technology with existing CDN system so as to solve the disadvantage of CDN system with extraordinary scalability of P2P technology. So this paper builds virtual models with computers of CDN system and Full Distribution P2P network structure. And with massive and precise simulation experiments, we combine CDN system with Full Distribution P2P architecture and simulate. Then we perform quantificational analysis of statistical simulation data and try to find an optimized configuration for P2P-CDN system by analyzing the data of related performance parameters. With this serial of analysis, we could offer the future constructions of P2P-CDN system more persuasive advice in the aspects of theory and practical data.

Keywords： Internet P2P CDN Full Distribution