Live media flow rate allocation in P2P multipath networks

摘要

Rapid development of multimedia industry not only provides multimedia entertainments, creates special communities but also influences the method of digital contents transmission efficiently. How to achieve the goal of entertainment becomes a popular topic in both industry and academic. The delivery of multimedia that efficiently maximizes its quality in changing network conditions is one of the most challenging tasks in the design of live streaming systems. This study attempts to improve current P2P (peer-to-peer) live streaming systems by allowing users to enjoy high-quality service under the limitations of network resources. The proposed improvement method involves summing up and analyzing the consideration factors and restriction factors involving live stream quality during system operations. The proposed R-D (Rate-Distortion) optimized dynamic nodes join algorithm is based on multipath streaming concept and receiver-driven approach. This distributed algorithm enables the system to evaluate the current network status, in order to optimize the end-to-end distortion of P2P networks. Results of this study demonstrate the effectiveness of the proposed approach.