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Open Software Platforms for Mobile Digital Broadcasting
- 1. Open Software Platforms for Mobile Digital Broadcasting François Lefebvre Communications Research Centre, Canada UQO, 4 février 2010 1
- 2. Context for MobileBroadcasting The DAB/DMB System CRC Projects Future? 2
- 3. Replacement technologies for Terrestrial Radio + TV Spectrum efficiency / digital dividend Digital enhancements Convergence of services and devices 3
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- 5. Device Convergence 5
- 6. The Long Tail Size of Specialized Infrastructure Audience Efficiency: Spectrum, $/bit Head of the Long Tail Very large audiences Live Content ranked by popularity 6
- 7. Mobile Digital BroadcastingStandards 7
- 8. DAB System Features High speed mobility Capacity: 1.5 Mbps / channel ( 16 Gb / day ) High bitrate AV & Data: Typical video to mobile screen: 384-512 kbps Spectrum: Band III : 174 to 240MHz L-Band : 1452 to 1492MHz Modulation: COFDM Single Frequency Networks 8
- 9. DAB/DMB Applications Dynamic label segment (text for radio) Slideshow Broadcast Website Electronic Program Guide Traffic information DMB ... 9
- 10. DAB System Transmitter Audio Codec 1 M U Audio L Codec 2 One DAB T Ensemble High Power I Modulator Amplifier Audio P Codec 3 L E . . X . E Audio R Codec N 10
- 11. DAB/DMB Applications Video DAB Data Pipeline Audio 1 1.5 Mbps 2 Programs 3 4 5 Subscription Datacasting Services Navigation, Traffic, Weather, Maps, etc. 11
- 12. CRC Projects: DAB Transmission 12
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- 14. Trend: Software onGeneric HW
- 17. Software Defined Radio USRP:Ettus research
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- 19. CRC DAB SoftwareStack 19
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- 22. Ubuntu with CRCTools
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- 26. CRC DAB Projects: Reception
- 27. Colliding Business Models ? Broadcaster MNO FTA-TV Pay-TV
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- 31. Openmokast Architecture Receiver control Demultiplexing Application decoding Presentation
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- 38. Android Openmokast Player Openmokast Player on on T-Mobile G1 Android Market (MAS)
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- 41. Adopt Royalty-Free Tech • In broadcasting: most standards require non-RF tech • Must pay royalties for most CODECS • - Can't distribute free software implementations at large • Foster adoption of RF tech in standards • CRC mmbTools now includes CELT wideband audio CODEC for DAB
- 42. mmbTools Community www.opendigitalradio.org Tweak USRP for appropriate bands Build power amplifier 8 streaming internet radio into CRC mmbTools FM modulator with USRP + Gnu Radio Companion Receiver manufacturers Pre-market field trials
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- 44. New Software ReceiverPlatforms IGEPv2 Beagleboard Zoom ... SDR? Multi-standard? Mobile Hotspot – Wifi
- 45. FM + RDSin mobile devices GSM Phones © HTC 45
- 46. Other Potential Projects • Live CD: • Support more standards: FM/RDS, ATSC/MH, … • Update tu recent Ubuntu releases (LTS) • Openmokast: Bcast chipsets into open phones • Openmokast: Port to Android • New broadcast apps • Royalty-free codecs: audio, video (CELT, Theora) • OpenBTS as return link • Broadcast apps in “App Stores” • Micro-broadcasting: events,… • Field trial: 3G radio reception • …?
- 47. Internet Radio Appsfor iPhone © Apple, iTunes Store 47
- 48. Internet Radio Standardisation - Central listings of radio stations - Detailed stations info + more... - CE devices and others - Managed vs unmanaged - Free vs licensed FM Radio Unique internet link Internet radio unmanaged, free Internet radio + DAB + FM + ... Managed, licensed 48
- 49. Conclusions Broadcasting = One-to-many Telecom Business models for broadcasting still evolving Open & RF & Software and Generic HW = democratisation = rapid innovation cycles, adoption, QoL Other platforms coming: Internet, 3G, LTE, Wimax,... Identified potential R&D projects 49
- 50. Merci ! PROJECTS openmokast.org mmbtools.crc.ca www.crc.ca/mmb http://www.youtube.com/crcmmb http://www.slideshare.net/tag/crcmmb BLOG Broadcasting20.org, Twitter: @fralef francois.lefebvre@crc.ca