Title :
Network-driven adaptive video streaming in wireless environments
Author_Institution :
Inst. of Commun. Networks & Comput. Eng., Univ. of Stuttgart, Stuttgart
Abstract :
In this paper, a concept of a network-driven adaptive video streaming is proposed and investigated in a state-of-the art UMTS/HSDPA network in order to alleviate the impact of strongly time-varying quality of wireless links on video quality. We propose making adaptation decisions in a radio access network based on channel-quality information available there. This is done by a so-called Multimedia Network Controller (MNC), which is aware of server and client capabilities and the channel quality. Upon a decision, the MNC sends a rate switching request to the video server, which adapts its data rate. We evaluate results with a novel PSNR/video-interruptions diagram allowing to show and to compare video quality graphically in a compact form. For the performance evaluation, we developed a comprehensive video streaming testbed around a detailed UMTS/HSDPA emulation tool.
Keywords :
3G mobile communication; multimedia communication; radio access networks; video communication; video streaming; wireless channels; PSNR/video-interruptions diagram; UMTS/HSDPA network; multimedia network controller; network-driven adaptive video streaming; radio access network; video quality; wireless environments; wireless links; 3G mobile communication; Adaptive systems; Art; Emulation; Multiaccess communication; Network servers; PSNR; Radio access networks; Streaming media; Testing;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on
Conference_Location :
Cannes
Print_ISBN :
978-1-4244-2643-0
Electronic_ISBN :
978-1-4244-2644-7
DOI :
10.1109/PIMRC.2008.4699806
