Paper #10

PRISM, an IP-based architecture
for broadband access to TV and
other streaming media

A. Basso, C. D. Cranor, R. Gopalakrishnan,
M. Green, C. Kalmanek, D. Shur, S. Sibal,
C. Sreenan & J.E. van der Merwe
AT&T Labs - Research &
University College Cork, Ireland


IP-based networks such as the Internet have been the focal point for innovative technologies, services, and applications. These networks have enabled hugely successful services like the World Wide Web, and they are even attracting traditional services such as telephony. The service model for accessing Web content offers tremendous control and choice to users. In particular the on-demand nature of this model provides users instant access to content of their choice.

Another class of services enabled by IP networks is the delivery of streaming audio and video content. While the Web service model also extends to IP-based streaming content, the user experience today does not compare favorably with the quality of broadcast TV. Current broadcasting technologies such as TV, cable, and satellite offer high quality but provide limited choice and do not allow users to access content at arbitrary times (i.e. no on-demand access). Broadcasting is geared towards a "push" model where content distributors control what content is made available to viewers and the time at which it is broadcast. Furthermore, broadcasting systems are essentially closed ...

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- Last revised: Weds Jun 27 20:56:29 EDT 2000