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Cheng-Lin Tsao, Dr. Yeonsik Jeong, Prof. Raghupathy Sivakumar

Multihomed Video Delivery. Testbed Environment. Three Screen Television (3S-TV). 3S-TV Goal 3 screens: TV, PC, and mobile device. Developing a universal content delivery platform for three screens. Traditional stand-alone content delivery platforms: Cable operators: video to TV.

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Cheng-Lin Tsao, Dr. Yeonsik Jeong, Prof. Raghupathy Sivakumar

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  1. Multihomed Video Delivery Testbed Environment Three Screen Television (3S-TV) • 3S-TV Goal • 3 screens: TV, PC, and mobile device. • Developing a universal content delivery platform for three screens. • Traditional stand-alone content delivery platforms: • Cable operators: video to TV. • Internet service providers: data access to PC. • Telecom operators: voice to mobile device. 3S-TV Testbed • 3 screen video delivery platform over IP network. • Proof of 3S-TV concept with industry-standard products. • Implementation of 3S-TV solutions. 3S-TV Testbed Multihoming Challenges of 3S-TV Multihomed Video Delivery for Three Screen Television Cheng-Lin Tsao, Dr. Yeonsik Jeong, Prof. Raghupathy Sivakumar • Performance: first challenge of 3S-TV. • Capacity: data rate not sufficient for multiple video streams. • Resilience: packet losses in the Internet. • Interoperability among 3S-TV platforms. • Killer-application service for 3S-TV. • Performance factors have a direct impact on perceived video quality. Multihoming is used to improve capacity performance. • Scientific Atlanta video streaming headend • Video streams: H.264 video codec, AC-3 audio codec • HD video: 720p, 5.6 Mbps • SD video: 480p, 3.1 Mbps • LD video: 240p, 1.1 Mbps • Access interfaces: • AT&T DSL: 3~6 Mbps • Comcast Cable: ~6 Mbps • GT LAWN Wi-Fi: 1~4 Mbps • Verizon EV-DO: 0.5~1 Mbps • Multihoming encoder/decoder: • Linux router (Fedora 9) with Core 2 Duo 1.8 GHz • Reloadable kernel module for multihoming • Three screens: • HDTV with Scientific Atlanta STB • Linux PC with VLC • Nokia tablet or Linux laptop with VLC • Subscribing to multiple Internet access technologies. • Typical home users have access to: • Cable modem • xDSL • Municipal Wi-Fi • 3G (EV-DO, HSDPA) • WiMAX • Either one does not have sufficient capacity to deliver multiple video streams for 3S-TV. • Multihoming technology uses all interfaces for video delivery simultaneously. • Form a large delivery-pipe from content provider to 3S-TV by aggregating multiple access interfaces. • Decoupling content delivery and capacity provisioning: • All video streams are mixed at multihoming encoder. • Multihoming encoder transport packets through multiple interfaces. • Multihoming encoder aggregate packets from all interfaces and relay to three screens. • Benefits of decoupling: • No modification to content provider and customers. • Full utilization of all access interfaces.

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