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Mobile TV

Mobile TV. Jian Huang. Seminar of CSCE 5520: Wireless Networks Dept of Computer Science and Engineering University of North Texas. Outline. Introduction Challenge Network Architecture Standards Application Example Main Concerns Conclusion. Future Market.

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Mobile TV

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  1. Mobile TV Jian Huang Seminar of CSCE 5520: Wireless Networks Dept of Computer Science and Engineering University of North Texas

  2. Outline • Introduction • Challenge • Network Architecture • Standards • Application Example • Main Concerns • Conclusion

  3. Future Market • 2007 – 2009 Mobile TV will begin commercial service in earnest • 2010 70 million TV-enabled phones worldwide

  4. Contents and locations • Sports • News • Weather • Music • Major events • Dentists waiting lounge • Bedroom • Bus-stop • Outside in parks

  5. Mobile Service Features • Return channel • Service portal (EPG,ESG) • Control of the terminal specifications and distribution • End-user knowledge and technical expertise in network provisioning

  6. Challenge • 2G networks: 14 Kbps • 3G networks: 2 Mbps • Mobile TV: 300 Kbps

  7. Challenge

  8. Concept: Unicast and Broadcast

  9. Two mobile-TV approaches • Cellular approaches Using existing 3G cellular networks Unicast (user limits, overwhelm) Multimedia Broadcast and Multicast Services standard (MBMS) TDtv

  10. Two mobile-TV approaches • Dedicated networks New infrastructure Not constraint other mobile services DVB-H (digital video broadcasting) DMB (digital mobile broadcast) MeidaFLO (Media forward link only) ISDB-T (Integrated Services Digital Broadcasting-Terrestrial)

  11. Solution

  12. Hybrid Network Architecture

  13. Hybrid Network Architecture

  14. Standard: MBMS (Multimedia Broadcast and Multicast Service) • Use 3G/UMTS architecture • Eliminate new hardware for networks • Impact other services • Two mode: broadcast, multicast • Suited for small, less complex multimedia

  15. Standard: TDtv • IPWireless, T-mobile, Sprint, Orange • Licensed spectrum • Unpaired spectrum • 5 MHz: 5 Mbps • 10 MHz: 9.7 Mbps

  16. Concept: OFDM • Orthogonal frequency-division multiplexing • Split signal into multiple sets • Modulating each onto a different subcarrier (spaced orthogonally) • Transmitted simultaneously without interference

  17. Standard: DVB-H (Digital Video Broadcast - Handheld) • Planning in German • Extension of DVB-T • OFDM • MPEG-4 advanced video coding (AVC) • High efficiency advanced audio coding (AAC) • Resolutions: 176*144 to 2048*1024 • Frame rate: 15 to 30 fps • Data rate: 128 Kbps to 20 Mbps

  18. Standard: DMB (Digital Multimedia Broadcasting) • Used in South Korea, France (LG, Samsung) • Terrestrial DMB OFDM VHF channels 8 (180 to 186 MHz) and 12 (204 to 210 MHz) • Satellite DMB CDMA UHF (2630 to 2655 MHz)

  19. Standard: MediaFLO (Forward link only) • QUALCOMM (Verizon, LG, Sanyo) • OFDM • Digital-TV transmitter to send MediaFLO waveform • MPEG4 AVC and ACC codecs • UHF channel 55 (716 to 722 MHz) • Data rate: 11 Mbps • Frame rate: 30 fps

  20. ISDB-T • A satellite-to-tower system similar to DVB-T • Used in Japan

  21. Mobile Broadcast Standards

  22. Standards Conclusion

  23. Application example: Nokia N92 • DVB-H receiver (470-750MHz) • Video / Audio codecs: H.264 AVC 384kbps@QVGA 15fps/QCIF 30fps and AAC up to 128 kbps) • Mobile TV application for selection, purchase, consumption, and storage of TV programs • Support for interactive services • Mobile TV electronic service guide • Channel and content protection: OMA DRM 2.0, IPSec rel. w IPv6, IPv6 scalable multicast • Large, 2.8" up to 16 million color display (QVGA 320 x 240 resolution) • Fold, twist, and stand design and dedicated media keys • Up to 5 hours watch time, stereo speakers, memory card support up to 2GB • $799.99

  24. Main Concerns • Standards • Allocation of frequency spectrum • DRM and business/revenue models • Infrastructure improvements • Quality of service • Handset cost • Handset performance/battery life

  25. Conclusion • “Killer application” • Balance the practical concerns: hybrid network architecture • Unified standard

  26. Quiz • What’s the difference of unicast distribution and broadcast distribution? • What’s the possible hybrid network architecture for mobile TV • What’s the practical concerns of mobile TV

  27. References • Lida Dailey Paulson, “TV Comes to the Mobile Phone”, IEEE Computer Society, April, 2006 • Norbert Jordan, et. al., “Broadcast Television Services Suited for Mobile Handheld Devices”, ICDT, Aug. 2006 • Nokia Mobile TV Forum, http://www.mobiletv.nokia.com/ • Wireless Solutions: Mobile TV, http://focus.ti.com/general/docs/wtbu/wtbugencontent.tsp?templateId=6123&navigationId=12424&contentId=4618 • SAMSUNG's Digital World, http://www.samsung.com/Products/Semiconductor/MobileSoC/Mobile_TV.htm

  28. Questions

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