Peer-Paired Collaboration for On-Demand Streaming Applications and an Improved Error Recovery Technique  

作　　者：郭常杰 沈国斌 李世鹏 钟玉琢 

机构地区：[1]Department of Computer Science and Technology, Tsinghua University [2]Microsoft Research Asia, Sigma Center

出　　处：《Tsinghua Science and Technology》2003年第6期651-657,共7页清华大学学报（自然科学版（英文版）

摘　　要：Previous studies on streaming media networks have mainly focused on how to conserve the network bandwidth, especially the Internet backbone bandwidth, while maintaining a desired quality. This paper tackles the problem from another perspective, trying to improve the individual streaming quality while not increasing the backbone traffic. Specifically, we apply a peer-paired collaborative streaming architecture that exploits the power of peer-to-peer networking and extends the peer-paired collaboration from a live broadcasting scenario to the more general on-demand streaming scenario by introducing a unique catch-up scheme. Experimental results show that the peer-paired collaboration can bring about a significant performance gain for on-demand streaming application scenarios. In addition, we propose a forward error correction based error recovery technique that can resist up to 50% packet losses regardless of whether the losses are independent or shared.Previous studies on streaming media networks have mainly focused on how to conserve the network bandwidth, especially the Internet backbone bandwidth, while maintaining a desired quality. This paper tackles the problem from another perspective, trying to improve the individual streaming quality while not increasing the backbone traffic. Specifically, we apply a peer-paired collaborative streaming architecture that exploits the power of peer-to-peer networking and extends the peer-paired collaboration from a live broadcasting scenario to the more general on-demand streaming scenario by introducing a unique catch-up scheme. Experimental results show that the peer-paired collaboration can bring about a significant performance gain for on-demand streaming application scenarios. In addition, we propose a forward error correction based error recovery technique that can resist up to 50% packet losses regardless of whether the losses are independent or shared.

关 键 词：streaming media peer-paired collaboration ON-DEMAND forward error correction (FEC) 

分 类 号：TN919.8[电子电信—通信与信息系统]