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Airborne IP Multicast: Ethernet Returns to the Ether

Airborne IP Multicast: Ethernet Returns to the Ether. Greg Economides Wayne M. Pecena Educational Broadcast Services Texas A&M University. Outline. The “Theory” Digital TV Basics Datacast Fundamentals The “Practical” Texas Public Broadcasters Educational Network Overview

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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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