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Airborne IP Multicast: Ethernet Returns to the Ether

This presentation covers the theory and practical aspects of ATSC data broadcasting, including digital TV basics, datacast fundamentals, and live datacast demonstrations. It also explores the Texas Public Broadcasters Educational Network (TPBEN) and its infrastructure.

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Airborne IP Multicast: Ethernet Returns to the Ether

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  1. Airborne IP Multicast:Ethernet Returns to the Ether Greg Economides Wayne M. Pecena Educational Broadcast Services Texas A&M University

  2. Outline • The “Theory” • Digital TV Basics • Datacast Fundamentals • The “Practical” • Texas Public Broadcasters Educational Network Overview • “LIVE” Datacast Demonstrations • Questions ? Fall 2004 Internet 2 Member Meeting - September 2004

  3. Analog TV Basics Single Standard Definition “SD” Program Stream Fall 2004 Internet 2 Member Meeting - September 2004

  4. DTV Basics - HD Single High Definition “HD” Program Stream Fall 2004 Internet 2 Member Meeting - September 2004

  5. DTV Basics - SD Multiple “SD” Program Streams 4 – 6 streams possible Fall 2004 Internet 2 Member Meeting - September 2004

  6. DTV Basics - Typical Standard Definition High Definition Multiple Stream Types Datacast Fall 2004 Internet 2 Member Meeting - September 2004

  7. ATSC Program Stream ATSC Stream Contains 188-byte MPEG-2 Packets Fall 2004 Internet 2 Member Meeting - September 2004

  8. MPEG-2 Transport Stream Fall 2004 Internet 2 Member Meeting - September 2004

  9. Datacast Stream Fall 2004 Internet 2 Member Meeting - September 2004

  10. Data Receivers LGE B2C2 AccessDTV …others Fall 2004 Internet 2 Member Meeting - September 2004

  11. Personal Receiver • Personal Use Applications • Attached to Notebook or Desktop PC via USB • Receive Software Application Installed Fall 2004 Internet 2 Member Meeting - September 2004

  12. Basic Receiver • Integrates with existing LAN infrastructure • Integrates with existing web/file server • Dedicated to DTV datacast reception Fall 2004 Internet 2 Member Meeting - September 2004

  13. Basic Receiver / Server • Integrates with existing LAN infrastructure • Provides Web/File services • Dedicated to DTV datacast reception Fall 2004 Internet 2 Member Meeting - September 2004

  14. Datacast Reception Solutions 14 dB SNR REQUIRED for Data Reception Fall 2004 Internet 2 Member Meeting - September 2004

  15. Datacast OSI Model Fall 2004 Internet 2 Member Meeting - September 2004

  16. Datacast Standards • Data Transport • ATSC Data Broadcast Standard T3/S13 • Application Development • Advanced Television Enhancement Forum ATVEF Transport B – SMPTE DDE-1 • ATSC DTV Application Environment DASE T3/S17 Fall 2004 Internet 2 Member Meeting - September 2004

  17. System Specifications • 19.38 Mbps Maximum Data Rate • A/90 Conformant IP Encapsulation • TFTP32 & UHTTP File Encapsulation • Support Opportunistic Data Insertion • Error Correction Capable • UHTTP XOR FEC / Packet Interleaving • N-Pass Recovery Fall 2004 Internet 2 Member Meeting - September 2004

  18. Further Study • www.atsc.org • www.etvcookbook.org • www.pbs.org/digitaltv • www.smpte.org Data Broadcasting: Understanding The ATSC Data Broadcast Standard ISBN 0071375902 Fall 2004 Internet 2 Member Meeting - September 2004

  19. Texas Public Broadcasters Education Network - TPBEN • What is TPBEN ? • Statewide Digital TV Based Datacast Network • Development of Pilot Content Datacast Applications • Funded by TIFB Grant to Texas A&M University • Partnership of 14 Public TV Stations • WhyTPBEN ? • Evaluate Advantage of New Distribution Models • Need to Reach More Texans With Broadband Content • Provide Equitable Broadband Educational Access Fall 2004 Internet 2 Member Meeting - September 2004

  20. TPBENStations Fall 2004 Internet 2 Member Meeting - September 2004

  21. Infrastructure • “Intranet” Between Stations • DS-1 for Connectivity – “Star” Topology • Broadcast Station Equipment • Cisco Router, Switch, & Content Engine • Triveni “SkyScraper” Based • Data Fab • Data Hub • Data Receiver(s) Fall 2004 Internet 2 Member Meeting - September 2004

  22. Typical Station Installation Cisco Router Cisco Switch Cisco Content Engine Triveni “Test” Receiver Triveni Data Hub Fall 2004 Internet 2 Member Meeting - September 2004

  23. Station Model Fall 2004 Internet 2 Member Meeting - September 2004

  24. Datacast Content • Software • .DOC, .PDF, .XLS Files & Documents • Digital Audio & Video • .JPG and other Graphics Files • Basically, ANY file type that can be accessed by a personal computer Fall 2004 Internet 2 Member Meeting - September 2004

  25. Application Support • File Delivery • IP Streaming Delivery • Interactive TV Content Insertion • Internet Service Acceleration Fall 2004 Internet 2 Member Meeting - September 2004

  26. Content Distribution Model Fall 2004 Internet 2 Member Meeting - September 2004

  27. Data Fab • Specify Content • Specify Schedule • Prioritize Content • Guarantee • Best Effort • Encrypt – Access - DRM • Generate Catalogs Fall 2004 Internet 2 Member Meeting - September 2004

  28. Data Hub • Activate / Deactivate Accounts • Allocates Bandwidth to “Accounts” • Inserts Content Into ATSC Broadcast Stream • Administration & Management • Bandwidth Logging (Metered Billing) • Status Logging • Optional Acknowledgement Server “Back Channel” Fall 2004 Internet 2 Member Meeting - September 2004

  29. Data Receiver • Select Desired RF Channel • Select Data Stream • Extract Data From Stream • Render Content / Launch Application • Manage Local Cache Fall 2004 Internet 2 Member Meeting - September 2004

  30. Demonstrations Special Thanks To KLRU DT – Austin Public Television for Providing the Bits! Fall 2004 Internet 2 Member Meeting - September 2004

  31. Demo 1 Description EMWIN Emergency Managers Weather Information Network Real Time Weather Data from The National Weather Service http://iwin.nws.noaa.gov/emwin/index.htm Fall 2004 Internet 2 Member Meeting - September 2004

  32. Demo 1 Flow Fall 2004 Internet 2 Member Meeting - September 2004

  33. Demo 2 Description Live Audio & Video Streaming Fall 2004 Internet 2 Member Meeting - September 2004

  34. Demo 2 Flow Fall 2004 Internet 2 Member Meeting - September 2004

  35. THANK YOU! Questions ? Greg Economides Educational Broadcast Services Texas A&M University College Station, TX 77843-4244 979.458.GREG econ@tamu.edu Wayne M. Pecena Educational Broadcast Services Texas A&M University College Station, TX 77843-4244 979.845.5662 w-pecena@tamu.edu Fall 2004 Internet 2 Member Meeting - September 2004

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