Paper Info
Title
In-network adaptation of H.264/SVC for HD video streaming over 802.11g networks
Abstract
In this paper, we present an approach for in-network adaptation of H.264/SVC in the context of 802.11 wireless networks. It builds upon our previous work on an adaptive RTSP/RTP proxy which allows to adapt video streams on Linux-based home router platforms. The proposed approach tackles the throughput variations that occur as a consequence of the physical rate adaptation in 802.11 equipment caused by the mobility of clients. By combining monitoring information available exclusively on the wireless router with the ability to adapt scalable video streams on-the-fly, the proposed in-network adaptation approach allows to quickly adjust the video bit rate to the current link conditions. Instead of reacting on packet loss, our approach uses an increase in queueing delay at the router to detect phases of throughput degradation. This allows a higher responsiveness compared to traditional end-to-end approaches that rely solely on RTCP feedback. The behavior of our novel approach was evaluated in several mobility scenarios in an experimental test bed. The results obtained by streaming and adapting high-definition content clearly demonstrate the feasibility and benefits of this approach.
Year
DOI
Venue
2011
10.1145/1989240.1989245
NOSSDAV
Keywords
Field
DocType
hd video,proposed in-network adaptation approach,novel approach,video bit rate,in-network adaptation,video stream,traditional end-to-end approach,linux-based home router platform,physical rate adaptation,scalable video streams on-the-fly,packet loss,wireless network
Wireless network,RTP Control Protocol,Real Time Streaming Protocol,Computer science,Wireless router,Computer network,Packet loss,Real-time computing,Queueing theory,Throughput,Router
Conference
Citations 
PageRank 
References 
4
0.45
4
Authors
3
Name
Order
Citations
PageRank
Ingo Kofler115319.73
Robert Kuschnig212213.39
Hermann Hellwagner31114134.97