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

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

3. 3

4. 4 Future Market 2007 – 2009 Mobile TV will begin commercial service in earnest 2010 70 million TV- enabled phones worldwide

5. 5 Contents and locations Sports News Weather Music Major events Dentists waiting lounge Bedroom Bus-stop Outside in parks

6. 6 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

7. 7 Challenge 2G networks: 14 Kbps 3G networks: 2 Mbps Mobile TV: 300 Kbps

8. 8 Challenge

9. 9 Concept: Unicast and Broadcast

10. 10 Two mobile-TV approaches Cellular approaches Using existing 3G cellular networks Unicast (user limits, overwhelm) Multimedia Broadcast and Multicast Services standard (MBMS) TDtv

11. 11 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)

12. 12 Solution

13. 13 Hybrid Network Architecture

14. 14 Hybrid Network Architecture

15. 15 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

16. 16 Standard: TDtv IPWireless, T-mobile, Sprint, Orange Licensed spectrum Unpaired spectrum 5 MHz: 5 Mbps 10 MHz: 9.7 Mbps

17. 17 Concept: OFDM Orthogonal frequency-division multiplexing Split signal into multiple sets Modulating each onto a different subcarrier (spaced orthogonally) Transmitted simultaneously without interference

18. 18 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

19. 19 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)

20. 20 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

21. 21 ISDB-T A satellite-to-tower system similar to DVB- T Used in Japan

22. 22 Mobile Broadcast Standards

23. 23 Standards Conclusion

24. 24 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

25. 25 Main Concerns Standards Allocation of frequency spectrum DRM and business/revenue models Infrastructure improvements Quality of service Handset cost Handset performance/battery life

26. 26 Conclusion “Killer application” Balance the practical concerns: hybrid network architecture Unified standard

27. 27 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

28. 28 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/Mobil eSoC/Mobile_TV.htm

29. 29 Questions