Future of the broadcasting spectrum


Published on

An overview of the future of the Broadcast spectrum and of new Broadcasting applications.

Published in: Technology
  • Be the first to comment

Future of the broadcasting spectrum

  1. 1. Technologies and the Future of the Broadcast Spectrum Communications Research Centre Bernard Caron, Vice-President, Broadcast Technologies Research Warning: The views presented are those of the author only.
  2. 2. Broadcasting Technologies at CRC <ul><li>CRC is the primary technical centre of excellence in broadcasting technologies in Canada, and the only organization with a R&D program and unique facilities dedicated to Broadcasting. </li></ul><ul><li>CRC provides supports for Spectrum Management to the Canadian Department of Industry. </li></ul><ul><li>CRC works with Private Industry and other Research organizations through collaborations, Service Contracts and IP licencing in Canada and around the world </li></ul>
  3. 3. The Future of the Broadcast Spectrum <ul><li>Spectrum for : </li></ul><ul><li>1-OTA digital Broadcasting stations </li></ul><ul><li>2-New Broadcasting Services </li></ul><ul><li>3-Other telecommunication systems </li></ul>
  4. 4. 1-Spectrum for OTA Digital broadcasting stations <ul><li>Scenarios for Digital TV </li></ul><ul><li>Scenarios for Digital Radio </li></ul><ul><li>More Efficient Use of Spectrum for OTA </li></ul><ul><li>Improving Broadcasting Coverage </li></ul>
  5. 5. Possible Scenarios for OTA DTV <ul><li>Full transition from analog to digital (HDTV) services (e.g. USA) </li></ul><ul><li>Hybrid model </li></ul><ul><ul><li>Replicate analog coverage with DTV in major centres </li></ul></ul><ul><ul><li>Free (or low cost) Satellite or cable services elsewhere </li></ul></ul><ul><li>Multiplex Model </li></ul><ul><ul><li>HDTV services OTA in large cities </li></ul></ul><ul><ul><li>SDTV services (Shared DTV multiplex) elsewhere </li></ul></ul><ul><li>Switch off OTA TV. </li></ul><ul><ul><li>Replaced by cable, IPTV, satellite, Internet and Wi-Max distribution </li></ul></ul>
  6. 6. Possible Scenarios for Radio <ul><li>Full transition from analog to digital radio in the AM and FM bands (e.g.All-digital HD Radio,DRM+, DRM) </li></ul><ul><li>Backward FM compatible Digital Radio (e.g. HD-Radio) </li></ul><ul><li>Continuation of analog services in the FM band on </li></ul><ul><li>Expansion of radio to the TV band </li></ul><ul><li>Transfer of AM radio services to another band </li></ul><ul><li>New digital radio/multimedia services  in dense urban areas only  (e.g. DMB on L-band) </li></ul><ul><li>Radio distribution using ATSC M/H, 3-4G, Wi-Fi, WIMAX… </li></ul>
  7. 7. Efficient use of spectrum by OTA DTV <ul><li>Distributed Transmitters Networks </li></ul><ul><ul><li>A number of low-power transmitters replace one centrally located high-power station </li></ul></ul><ul><ul><li>Coverage can be shaped to reach only populated areas </li></ul></ul><ul><ul><li>Potential for reduced construction and operating costs </li></ul></ul><ul><ul><li>Potential for spectrum saving </li></ul></ul><ul><ul><li>Needs for new tower sites may be problematic </li></ul></ul><ul><li>Replace off-channel repeaters by a Single Frequency Network (SFN) for regional, provincial or national coverage </li></ul><ul><li>Multiple SD TV stations on the same channel </li></ul><ul><li>More efficient compression techniques: H.264/AVC (toward 1080P) </li></ul><ul><li>More efficient transmission techniques: Modulation, Smart Antenna… </li></ul>
  8. 8. Possible Distributed Transmitters Network: TV Ontario
  9. 9. Need to Improve Broadcasting Coverage <ul><li>Mobile-Handheld reception </li></ul><ul><li>Portable reception </li></ul><ul><li>Indoor reception </li></ul><ul><li>Subway reception </li></ul><ul><li>Digital Replication of Analog Reception area in FM,VHF and UHF </li></ul><ul><li>More uniform and better coverage </li></ul><ul><li>More targeted coverage </li></ul>
  10. 10. Improv ing Coverage <ul><li>Distributed transmitters networks (DTN) </li></ul><ul><li>Adaptive and directional antenna performance. </li></ul><ul><li>VHF DTV Reception </li></ul><ul><li> In Québec City on Channel 12 </li></ul><ul><li> Poor performance with ‘’HDTV Ready’’ antenna </li></ul><ul><li>Rabbit ears better at VHF </li></ul><ul><li>Coverage Prediction: </li></ul><ul><ul><li>CRC-COVLAB </li></ul></ul><ul><ul><li>Can be used with Distributed </li></ul></ul><ul><ul><li>Transmitters networks </li></ul></ul><ul><ul><li>Try it free on-line at Lrcov.crc.ca. </li></ul></ul><ul><ul><li>See Demo in CRC Booth at NAB </li></ul></ul>
  11. 11. Improvements to ATSC DTV Coverage : Prediction of SFN Coverage Example of CRC-COVLAB prediction for Mobile/Fixed Fixed Mobile
  12. 12. 2-Spectrum for New Broadcast Services <ul><li>Mobile Television </li></ul><ul><li>Radio services using DTV Transmitters </li></ul><ul><li>3-D TV </li></ul><ul><li>New Applications: </li></ul><ul><ul><li>Intelligent Transportation Systems </li></ul></ul><ul><ul><li>Public Alerting </li></ul></ul><ul><ul><li>Datacasting </li></ul></ul>
  13. 13. Mobile Television <ul><li>Various distribution technologies </li></ul><ul><ul><li>ATSC Mobile DTV -- DVB-H </li></ul></ul><ul><ul><li>Wi-Fi/WiMax -- DMB </li></ul></ul><ul><ul><li>Qualcom/MediaFlo -- 3-4G wireless networks </li></ul></ul><ul><li>Broadcasters advantages </li></ul><ul><ul><li>Spectrum availability </li></ul></ul><ul><ul><li>Transmission facilities </li></ul></ul><ul><ul><li>Dual Transmission Mode: Mobile-Fixed (ATSC-M/H DVB-T/H, ISDB-T) </li></ul></ul><ul><ul><li>Own Content. Local content in particular. </li></ul></ul><ul><ul><li>Spectrum Efficiency </li></ul></ul><ul><li>One problem: Lack of built-in receivers in handheld devices </li></ul><ul><ul><li>Open devices </li></ul></ul><ul><ul><li>Personal Wi-Fi Hot Spot </li></ul></ul><ul><ul><li>External receivers connected to devices (USB) </li></ul></ul>
  14. 14. Technologies for Mobile Broadcasting <ul><li>Mobile Broadcasting transmission systems: </li></ul><ul><ul><li>HD-Radio, DAB, T-DMB,DRM, DRM+ </li></ul></ul><ul><ul><li>ATSC Mobile DTV , MediaFlo, DVB-H, ISDB-T </li></ul></ul><ul><li>More efficient Audio/Video compression technologies </li></ul><ul><ul><li>Wavelet-based codec </li></ul></ul><ul><ul><li>Frame rate conversion (CRC-FRC) </li></ul></ul><ul><ul><li>Multi-frame motion estimation </li></ul></ul><ul><ul><li>Bio-inspired audio coding algorithms </li></ul></ul><ul><li>Investigations on Multimedia Broadcasting using DAB-DMB, Wi-Fi, Wi-MAX technologies in the VHF-UHF Band </li></ul><ul><li>Smart Mobile UHF-VHF Antenna </li></ul>
  15. 15. Radio Services using DTV Transmitters <ul><li>Use ATSC Mobile DTV transmissions for radio services instead </li></ul><ul><li>Radio (24-48 kbps/program) and Mobile TV service (400 kbps/program) </li></ul><ul><li>10-20 Radio stations in one Mobile Channel </li></ul><ul><li>Could include images: Album Cover, Publicity... </li></ul><ul><li>Text information: Traffic , Weather, Headlines </li></ul><ul><li>Needs receivers </li></ul>
  16. 16. 3-D Video <ul><li>Popularity of 3-D Cinema </li></ul><ul><li>Future Upgrade to HDTV standard </li></ul><ul><li>Availability of glass-based 3-D Display </li></ul><ul><li>No standard distribution format yet. </li></ul>
  17. 17. Spectrum Efficient 3-D Video <ul><li>Investigation on compression technologies for 3-D video </li></ul><ul><li>Small increase in data requirement </li></ul><ul><li>Conversion of 2-D video </li></ul><ul><li>programs to 3-D (Demo in NAB International Research Park) </li></ul>
  18. 18. New Applications for Broadcasting Technologies <ul><li>Intelligent Transportation Systems </li></ul><ul><li>Digital Public Alerting </li></ul><ul><li>Datacasting (e.g. Tagging) </li></ul><ul><li>Non-real time data </li></ul><ul><li>Smart Appliances (FM-RDS) </li></ul>
  19. 19. 3-Spectrum to be shared with Others <ul><li>Digital dividend after the analog transmissions switch off </li></ul><ul><ul><li>United States 12-6-2009 </li></ul></ul><ul><ul><li>Canada 31-8-2011 </li></ul></ul><ul><ul><li>UK end of 2012 </li></ul></ul><ul><ul><li>Japan 24-7-2011 </li></ul></ul><ul><ul><li>Russia 2015 </li></ul></ul><ul><ul><li>European Community Recommendation: 1-1-2012 </li></ul></ul><ul><li>Various systems could share the spectrum currently allocated to broadcast </li></ul><ul><ul><li>IEEE 802.22 Wireless Regional Area Networks (Unlicenced Devices) </li></ul></ul><ul><ul><li>Rural and Remote Broadband Systems </li></ul></ul><ul><ul><li>MediaFlo, ATSC Mobile DTV, DVB-H, DMB </li></ul></ul><ul><ul><li>Wi-Fi, LTE or WIMAX in the Broadcast Band </li></ul></ul>
  20. 20. The Broadcasting Systems of T omor r ow <ul><li>Large Local Area </li></ul><ul><li>Wireless </li></ul><ul><li>Broadband </li></ul><ul><li>Mobile </li></ul><ul><li>Flexible: Audio, Mobile TV, HDTV, 3-D, Data </li></ul><ul><li>Integrated with other telecommunication systems to provide two-way interactivity </li></ul><ul><li>Ideal for mass distribution of multimedia content. </li></ul>
  21. 21. Viewers Production An example of integration Distribution Place shifting Distribution Rights Cable TV IPTV Broadcast transmitters Satellite WI-FI Internet Cellular
  22. 22. A possible scenario for the spectrum (…technically) <ul><li>UHF-28 (Distributed Transmitters for ATSC Mobile DTV) </li></ul><ul><ul><li>1 HDTV Program </li></ul></ul><ul><ul><li>2 Mobile TV Programs </li></ul></ul><ul><ul><li>4 Radio Stations </li></ul></ul><ul><li>UHF-32 (Distributed Transmitters for ATSC) </li></ul><ul><ul><li>SDTV Programs from 5 local stations </li></ul></ul><ul><li>UHF-63-64/68-69 </li></ul><ul><ul><li>Allocated to Public Safety Telecommunication </li></ul></ul><ul><li>UHF-52 </li></ul><ul><ul><li>Broadband Wi-Fi </li></ul></ul><ul><li>VHF-6 </li></ul><ul><ul><li>Digital radio stations </li></ul></ul><ul><li>AM </li></ul><ul><ul><li>Digital Radio Mondiale </li></ul></ul><ul><li>FM </li></ul><ul><ul><li>HD-Radio (IBOC) </li></ul></ul>
  23. 23. A challenge: Broadcast Compatible Users Device <ul><li>Multi-standard receivers </li></ul><ul><li>USB Connections </li></ul><ul><li>Bluetooth Connections </li></ul><ul><li>Wi-Fi Repeaters </li></ul><ul><li>Software Defined Radio (SDR) </li></ul><ul><li>Open Devices: e.g. Android </li></ul><ul><li>See CRC Demo in the CRC Booth </li></ul><ul><li>at the NAB International Research Park </li></ul>
  24. 24. Conclusions <ul><li>OTA Broadcasting continue to evolve and to play a major role. </li></ul><ul><li>Radio and Television will be one part of an interactive immersive multimedia experience . </li></ul><ul><li>Ultimate goal is to get anything, anytime, anywhere … on a variety of devices. </li></ul><ul><li>spectrum currently allocated to broadcast will be used around the world by: </li></ul><ul><ul><li>Digital OTA broadcast stations to distribute fixed and mobile TV, Radio and Data services </li></ul></ul><ul><ul><li>New Broadcast services </li></ul></ul><ul><ul><li>Others telecommunication systems and services </li></ul></ul>
  25. 25. Expected Achievement Thank you Communications Research Centre Bernard Caron, Vice-President Broadcast Technologies Research 613-998-2869, bernard.caron@crc.ca www.crc.ca