The Emergence of Digital Video Broadcast TV in Mobile Terminals: DVB-H

Transcription

1 The Emergence of Digital Video Broadcast TV in Mobile Terminals: DVB-H Don Shaver Director, Communications Systems Laboratory Texas Instruments Incorporated May 17, 2005

2 Outline Market Overview Mobile Digital Video Alternatives DVB-H System Overview Technical Challenges Summary

3 Wireless and Consumer Electronics Converge Creating Huge Opportunity Unconnected CE Devices Connected Wireless Bluetooth Cellular UWB Wi-Fi Digital TV Digital camcorders Digital still cameras Internet audio players Digital juke boxes And more Many new connected devices requiring content

4 Extending Entertainment: Your Living Room in Your Phone Display CIF, VGA Up to D1 Audio Dolby audio and 3D audio effects Camera 4 megapixel Up to 6 megapixel Video VGA video Up to DVD quality TV TV output Digital TV reception Games 3D interactive Game-console quality soon

5 Digital TV and Video Come to Wireless Millions of Video (TV) Users Worldwide Mobile Entertainment Users 300 On Handsets Today Source: ARC Group Broadcast analog TV Store and play TV Live TV Digital TV over cellular network Broadcast digital TV Digital rights management PVR or DVR capable phones coming soon

6 TV Snacking and Events will Drive Adoption

7 Value Chain for DVB-H Content Generator Content Packager Service Definition Broadcast Operator End User Device Disney ESPN CNN etc. Cellular operator Local content 3rd Party Broadcast operator Content generator Cable/ Satellite Content packager Content generator 3rd Party Content packager Content generator Handsets from OEMs SW (GUI, middleware, drivers) HW from SC suppliers Cellular Service Operator Cellular Network Operator

8 Outline Market Overview Mobile Digital Video Alternatives DVB-H System Overview Technical Challenges Summary

9 Mobile Terrestrial Digital Video TV Alternatives DVB-H (International) ISDB-T (Japan) Hollywood T-DMB (International) MediaFLO TM (Qualcomm/U.S.) Cellular Based Services 3GPP2/1xEV-DO BCMCS 3GPP/UMTS MBMS* * Multimedia Broadcast/Multicast Service

10 TV over 3G Networks UMTS 3GPP Reference Model for MBMS CBC Content Provider PDN (e.g. Internet) OSA SCS HLR CSE BM-SC Content Provider Gr Gmb Gi UE Uu UTRAN Iu SGSN Gn/Gp GGSN Gi BG Gi Multicast Broadcast Source Gi UE Um GERAN Iu/Gb Multicast Broadcast Source

11 TV Over Terrestrial Networks Satellite sends feed to digital TV towers User receives content on their phone or home TV set over digital TV frequencies User receives voice and data through the cellular network

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13 DVB Standards Method Carrier Modulation Channel Useful Channel Frequency Bandwidth Datarate Property Satellite Single QPSK MHz 45.4 Time- DVB-S/S2 Carrier GHz Invariant ETSI EN 36MHz /307 Cable Single QPSK, 8MHz 38.1 Time- DVB-C Carrier MHz 16-QAM, Mbps w Invariant ETSI EN 64-QAM 64-QAM Terrestrial Time- Multi , QPSK, 6,7,8 MHz 24.7 DVB-T/H ETSI EN /304 Carrier (OFDM) MHz 16-QAM, 64-QAM (VHF/UHF) 5 MHz (non-tv) Mbps w 64-QAM Variant

14 Geographic View of Mobile DTV DVB-H Qualcomm MediaFLO TM DVB-H DMB DVB-H DMB or DTV-M DVB-H DMB ISDB-T DVB-H North America Market Timing (DVB-H) Clear, nationwide spectrum available today, no waiting for analog channels to become available Crown Castle Network trial in Pittsburgh Network testing of prototype phones - mid 2005 Trial phones launch Volume phones launch - 1H 2007 Europe Market Timing (DVB-H) Trials in Europe Germany, France, UK, Finland, Sweden Network testing of prototype phones - mid 2005 Trial phones launch - late 2005, early 2006 Volume phones launch - early 2007 Japan Market Timing (ISDB-T) Trial Phones Launch to Market in 2006 Volume Phones Launch to Market in late 2006, 1H 2007

15 TV-Phone : Broadcast Video Standards DVB-H ISDB-T T-DMB MediaFLO TM Standard Open Open Open Closed International Japan International Qualcomm/US Air OFDM OFDM (sub- OFDM OFDM Interface banded) Service Early-2006 Early-2006 Today Avail. (for nationwide) Service Subscription Free initially Subscription Subscription Model FLO Forward Link Only

16 DVB-H Highlights One Way Multicast Use in conjunction with 2G/3G cellular for back channel MPEG-2 TS (mobile DVB-T with outer FEC/interleaver) IP Datacast capabilities (H.264, WMV9+, others) IP encapsulated in MPEG-2 TS Digital Video Broadcast for Handheld (DVB-H) VHF III: MHz UHF IV and V: MHz Others: MHz in U.S. DVB-T extension with new optional modes Leverages existing transmission hardware and designs Time slicing, Multi-Protocol Encapsulation (MPE-FEC), 4K mode Time Slicing reduces power dissipation 90% over DVB-T Receiver off in non-active time slices 7-8 hours battery operation

17 DVB-H Systems at a Glance Frequency Band Scope of Standards DVB-H Video Service VHF Band MHz UHF Band MHz (U.S MHz) Multiplexing Channel coding Modulation Subcarriers Video, audio associated with video, & optional aux data CH Bandwidth 5, 6, 7, 8 MHz OFDM Convolutional/R-S QPSK, 16-QAM, 64-QAM 2K, 4K, 8K MPEG-2 (DVB-T compatible), H.264/MPEG4-AVC, WMV9, Realplayer9/10, others

18 DVB-H Phase-1 Field Trials

19 DVB-H Phase-1 Field Trials

20 Mobile Terrestrial Digital Video TV Alternatives DVB-H (International) ISDB-T (Japan) T-DMB (International) MediaFLO TM (Qualcomm/U.S.) Cellular Based Services 3GPP2/1xEV-DO BCMCS 3GPP/UMTS MBMS

21 Integrated Services Digital Broadcasting (ISDB-T) Digital Terrestrial Broadcasting in Japan

22 Information Rates per Segment for ISDB-T (6 MHz)

23 Mobile Terrestrial Digital Video TV Alternatives DVB-H (International) ISDB-T (Japan) T-DMB (International) MediaFLO TM (Qualcomm/U.S.) Cellular Based Services 3GPP2/1xEV-DO BCMCS 3GPP/UMTS MBMS

24 Terrestrial DMB (T-DMB) One Way Multicast Terrestrial Digital Multimedia Broadcast Promoted by the World DAB forum DAB is currently deployed in 28 countries DAB front end Included in Eureka 147 standard Bands: VHF Band III: MHz L-Band: MHz Bandwidth: MHz Modulation: OFDM, DQPSK Capacity of 1.5 Mbit/s

25 T-DMB Systems at a Glance Frequency Band Scope of Standards T-DMB Video Service VHF Band III: MHz L-Band: MHz Audio coding algorithm Multiplexing Channel coding Modulation Subcarriers Video, audio associated with video, & optional aux data CH bandwidth MHz MPEG-1/-2 Layer II, BSAC/AAC OFDM Convolutional/R-S DQPSK 256, 512, 1K, 2K H.264/MPEG4-AVC & BSAC

26 T-DMB Video Service Terminal Architecture RF + ADC OFDM Demod Time De--interleaver Convolutional Decoder (Viterbi) CAS Descrambler T-DMB Rx System Based on TDMB Tx System (TTAS.KO )\ Defined by DAB (ETSI EN , Eureka 147) Conditional Access Based on DVB (ETSI EN ) Outer Convolutional De-interleaver Outer Decoder RS (204,188) MPEG-2 TS TS Demux Audio/Video Decode TDMB Video Demux Based on 2003SG r1

27 Mobile Terrestrial Digital Video TV Alternatives DVB-H (International) ISDB-T (Japan) T-DMB (International) MediaFLO TM (Qualcomm/U.S.) Cellular Based Services 3GPP2/1xEV-DO BCMCS 3GPP/UMTS MBMS

28 Qualcomm MediaFLO TM MediaFLO TM USA -- $800M investment Turnkey End-to-End with Media Distribution System Billing, security, media distribution One-Way Multicast Proprietary/OFDM Channel 55 ( MHz) Earliest nationwide transmission in timeframe Able to transmit in areas where channels 54/55/56 are open 2007 may be possible with adjacent channel 54/56 waiver ~100 Channels 15 Real-Time Kbps 85 Clipcast Channels Subscription: $20 per month FLO Forward Link Only

29 Lower 700MHz Band Upper 700MHz Band Qualcomm License

30 MediaFLO TM Licensed Band

31 Other Frequency Bands MMDS/BRS Frequency Bands 2.5 GHz in U.S., 200 MHz total, 5.5 MHz bands 2000 watts (33 dbw EIRP) of radiated power Sprint and Nextel own licenses in this spectrum + others They own 1-3 BRS bands depending on the area Fixed Broadband Wireless (IEEE ) Mobile WiMax (IEEE802.16e) Candidate for Mobile Digital Video Broadcast * EBS Educational Broadband Service BRS Broadband Radio Service

32 Sprint and Nextel own 1-3 BRS blocks depending on area * EBS Educational Broadband Service BRS Broadband Radio Service

33 Outline Market Overview Mobile Digital Video Alternatives DVB-H System Overview Technical Challenges Summary

34 DVB-T/H Parameters OFDM-mode 2k FFT 4k FFT 8k FFT Number of subcarriers Symbol duration 224 us 448 us 896 us Subcarrier spacing khz 2232 khz khz Bandwidth 7.61 MHz Modulation QPSK, 16-QAM, 64-QAM Code rate of inner convolutional coder 1/2, 2/3, 3/4, 5/6, 7/8 Guard interval (GI) 1/4 1/8 56 us 28 us 112 us 56 us 224 us 112 us 1/16 14 us 28 us 56 us 1/32 7 us 14 us 28 us

35 DVB-H Transmitter & Receiver

36 DVB-H IP Datacast Services Sharing a Mux with MPEG-2 Services

37 DVB-H Dedicated Network

38 DVB-T/H Transmitter

39 Outline Market Overview Mobile Digital Video Alternatives DVB-H System Overview Technical Challenges Summary

40 Terrestrial Channel

41 Fading

42 DVB-T/H OFDM Frame Structure

43 DVB-H Receiver AGC Channel Response Estimation RF & IF ADC FIR+Digital Downmixing OFDM Symbol Timing Recovery and Cyclic Prefix Removal FFT (2k, 4k, 8k) Frequency Domain Equalization (FEQ) QPSK, 16- QAM, 64-QAM PLL NCO Fractional Frequency Offset Estimation Frequency Error Integrator Integer Frequency Offset Estimation Transmission Parameter Signalling Decode Symbol De- Interleaver Bit De- Interleaver Viterbi Dec (1/2, 2/3, 3/4, 5/6, 7/8) Convolution De- Interleaver RS Decoder (204,188) Descrambler MPEG-TS Demux MPE-FEC RS Dec (255,191) 2 Mbit Buffer

44 Doppler Performance Maximum Doppler performance: 8K, 16 QAM, rate 2/3, GI = ¼, TU6 channel Hollywood performance MBRAI requirement Hollywood achieves 100 Hz Doppler exceeding the MBRAI requirement of 80 Hz Tolerate 96 miles per hour for 700 MHz band, 8K mode Tolerate 105 miles per hour in the GHz band, 2K mode

45 Implementation Challenges Power Dissipation/integration/cost/performance Use low cost digital CMOS process Board area, single chip with no external components Multi-standard operation (DVB-H, ISDB-T, others) RF performance Noise, linearity, phase noise, jitter, adjacent channel interference, susceptibility to blockers (e.g., 2G/3G co-located transmitters) Digital Baseband ~3-4 GMACS (multiply-accumulate operations per sec) 8K FFT size large memory requirements Doppler processing, ICI, fast channel acquisition (~2 seconds) Power management and time slicing Handoff Seamless handoff between towers Transmitter receiver propagation time varies

46 Inside TI s Hollywood Chip Hollywood Chip Tuner Demodulator ARM Processor Hollywood Single-Chip Receiver Brings TV content to life on the handset OMAP takes the MPEG streams; processes & outputs the image to the screen 3 chips become 1 -- TI s digital RF processor (DRP) Smallest, lowest power, lowest cost to drive DTV into mass market phones Receives & processes TV signals. Outputs video to an OMAP processor Open standards Supports: DVB-H for Europe and U.S. ISDB-T for Japan

47 Summary Rapid advances in SC enable new applications Power dissipation, cost, functionality, board area Submicron CMOS allows fully integrated solution Mobility/Portability Cell phones with accessories WiFi, Bluetooth, Wireless USB, GPS, Internet Audio, PVR/DVR, Broadcast TV, others Opportunities for new revenue sources Operators, content providers, broadcasters, equipment providers/oem s, SC manufacturers TiVo, DVB-H, Seamless Cellular/WiMax/WiFi Phase-2 DVB-H will be widely deployed in Possible due to mature standard and infrastructure 10 years of standardization, development, and deployment know-how in DVB-T

48 See:

49 Backup

50 Value Chain for DVB-H (Example 1) Broadcaster-Led Approach with Mobile Telecom Operator

51 Value Chain for DVB-H (Example 2) Mobile Telecom Operator-Led Approach with Broadcaster

52 Value Chain for DVB-H (Example 3) Independent DVB-H Service Provider

53 Value Chain for DVB-H (Example 4) Mobile Telecom Operator-Led Approach