Paper Info
Title
How dia-shows turn into video flows: Adapting scalable video communication to heterogeneous network conditions in real-time
Abstract
Video conferencing over IP (VCoIP) is a major trend in current Internet communication and has particularly spread to the mobile realm. In this environment, users face the problem of heterogeneous and fluctuating network conditions. A promising solution to this issue is the scalable video coding (SVC). It allows an adaptation of the video stream to the available bandwidth, but requires a reliable bandwidth estimation. Adaptation times for conversational video at fluctuating network conditions are critical, and a fast strategy for bandwidth estimation is needed to avoid congestion. In this work, we analyse the capabilities of the sender and the receiver to adapt the video coding to changing network conditions. We derive an early congestion indicator at the sender side based on the jitter variation. For receivers, we use sustained goodput to extract a feasible scaling. In thorough evaluations that include real-world 3G networks, we reveal a faster congestion detection at the sender that are also more robust but less accurate than probing at the receiver.
Year
DOI
Venue
2014
10.1109/LCN.2014.6925775
Local Computer Networks
Keywords
Field
DocType
3G mobile communication,bandwidth allocation,real-time systems,telecommunication congestion control,teleconferencing,video coding,Internet communication,SVC,VCoIP,adaptation times,bandwidth estimation,congestion detection,early congestion indicator,fluctuating network conditions,jitter variation,mobile realm,real-world 3G networks,scalable video coding,video conferencing over IP,video flows,video stream
Computer science,Computer network,Real-time computing,Video tracking,Bandwidth (signal processing),Jitter,Goodput,Heterogeneous network,Videoconferencing,Scalable Video Coding,Scalability
Conference
ISSN
Citations 
PageRank 
0742-1303
0
0.34
References 
Authors
16
3
Name
Order
Citations
PageRank
Fabian Jager110.69
Thomas C. Schmidt2696120.55
Matthias Wählisch35417.86