BcN 을위한 DMB 기술및응용. The 15 th High-Speed Network Workshop 2005 Jeju-Island,
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1 BcN 을위한 DMB 기술및응용 The 15 th High-Speed Network Workshop 2005 Jeju-Island, Broadcasting Media Research Group Digital Broadcasting Research Division Broadcasting Media Research Group 11
2 Contents 1. Current Trends 2. Convergence 3. What is T-DMB? 4. Domestic standard of T-DMB 5. What makes T-DMB? 6. How can T-DMB be delivered? 7. What can we get from T-DMB? 8. Future of T-DMB 9. Conclusion A. What is Available for T-DMB? Broadcasting Media Research Group 2
3 Current Trends Personalization Cell Phone Nomad No more fixed location Convergence Today s Buzzword Service Terminal Media Anywhere, Anytime, Any Contents, In a Personalized way DMB Broadcast Network + Communication Network Simultaneous Use of Two homogeneous Networks Cellular Network WiBro Broadcasting Media Research Group 3
4 Convergence (1/4) 방송 통신융합 융합형서비스 인터넷방송, IP TV, DMB, Mobile streaming 양방향데이터방송 방송과통신영역의 Convergence 콘텐츠, 전송망, 사용자단말 방통융합배경 / 발전방향 방송의디지털화및통신의광대역화 디지털방송콘텐츠의이종망간서비스가능 BcN 기반의다양한접속망 초고속인터넷, 이동통신, 케이블, 휴대인터넷, 지상 / 위성 /DMB 방송망 Broadcasting Media Research Group 4
5 Convergence (2/4) 방송 통신융합이란 이종망을통한다양한단말의방송콘텐츠서비스 이종망연동 방송망, 유무선인터넷, 이동통신망 다양한통합단말 TV, PC, PDA, 휴대폰 디지털방송콘텐츠 대화형 / 맞춤형 UCA: Ubiquitous Content Access 서비스제공 Any Content 사용자가원하는콘텐츠, 원하는형태로 (in a personalized way) Anywhere 이종접속망을통한다양한단말에서 Anytime 맞춤형방송 Broadcasting Media Research Group 5
6 Convergence (3/4) 방송통신융합기술개발 방통융합 Infra-structure BcN 광대역화 / 이동성, 이종접속망연동 방통융합 Info-structure 방통융합멀티미디어프레임워크 방통융합멀티미디어프레임워크 이종망과다양한단말로구성된방송통신융합환경에서, 멀티미디어콘텐츠의제작 / 보호 - 전달 - 유통 / 소비의단대단서비스를위한 포괄적이고체계적인상호연동가능한멀티미디어서비스골격 MPEG-21 Multimedia Framework Interoperable data model UMA: Universal Multimedia Access Broadcasting Media Research Group 6
7 Convergence (4/4) 방송과통신의융합가속화 기술개발의필요성 Emergence of New Media 방송매체 T, T, C, C, S, S, DMB DMB 콘텐츠콘텐츠 AV AV New New Types Types 다채널다채널 Consumer Active, Active, Smart Smart Personal Personal Need Need 망연동 / 접속망 / Broad., Broad., Internet, Internet, Mobile, Mobile, WLAN WLAN 단말단말 PDR, PDR, PC, PC, mpdr, mpdr, PDA, PDA, CellPhone, CellPhone, DMB DMB Expectation of Explosive Mass Market Convergent Service 의주요사항 : 편리성, 경제성, 신뢰성 (IPMP), 품질, etc. Broadcasting Media Research Group 7
8 T-DMB in BcN Forward Link (Main Channel): Broadcast Network Backward Link (Return Channel): Wireless Network S-DMB BcN T-DMB Broadcasting Media Research Group 8
9 What is T-DMB? (1/3) Digital Multimedia Broadcasting AV services through DAB-T framework From listening to watching while listening Small sized TV, PDA receivers and mobile phones Complementary to DTV Mobile Multimedia Broadcasting over terrestrial DAB framework Changed from analogue to digital radio Weather/ Stock information T-commerce CD quality audio Text & data service DAB : Digital Audio Broadcasting Traffic info & Navigation Mobile broadcasting Broadcasting Media Research Group 9
10 What is T-DMB? (2/3) Service Delivery Path 9 Provision of mobile multimedia (audio/video/data) broadcasting services at anytime, anywhere with anydevice GPS Radio Studio Service transmission Network (IP/Data network) TV studio Fixed receiver 휴대 Service provider 이 Terminal for moving ones Mobile terminal Additional info provider Mobile communication network Broadcasting Media Research Group 10
11 What is T-DMB? (3/3) Service Delivery Path Content packaging Media Encoder Contents Provider Content packaging Service Provider Data broadcasting server Return Channel Server Multiplexr Transmitter Station DMB Broadcating network Portable Mobile 지상파 DMB / CDMA 연동단말 Internet PSTN PSTN Voice data MSC BSC Content packaging Router CDMA 1x packet data 1XEV-DO Packet data BSC BTS 1XEV-DO Access Point Contents Provider MediaFLO Billing CDS System AAA Server CDMA 1x-EVDO Broadcasting Media Research Group 11
12 Domestic standard of T-DMB (1/2) Next generation digital broadcasting standard forum started the discussion on the domestic mobile multimedia broadcasting standard ( ) Ministry of Information and Communication announced the development of mobile multimedia broadcasting technology ( ) Finalized the draft of the domestic mobile multimedia broadcasting standard (T-DMB) ( ) TTA announced T-DMB as the domestic standard ( ) TTA: Telecomunications Technology Association Broadcasting Media Research Group 12
13 Domestic standard of T-DMB (1/2) Requirements Receiving condition Receivable on a moving vehicle up to 100Km/h Basic audio CD-quality stereo Multimedia services Video VCD-quality for 5 inch display (max. 352x288@30fps) Audio CD-quality stereo (max. 48 KHz sampling) Data service (Optional) text & graphic (defined by ISO/IEC ) Provision of local and remote interactivity CAS Provision of CAS functionality TTA: Telecomunications Technology Association Broadcasting Media Research Group 13
14 What makes T-DMB? (1/2) DAB specification (EUREKA-147: Rec. ITU-R BS System A) Bandwidth: 1.54MHz Modulation: DQPSK/OFDM Audio Program Service: MPEG-1,-2 Layer 2 Multiplexing: Eureka 147 Inner Error Correction Code: Convolution Code (4,1,7) Variable Rate Multimedia specification Video : MPEG-4 Part 10 AVC (H.264) Audio : MPEG-4 Part 3 BSAC Data broadcasting : MPEG-4 BIFS Multiplexing : MPEG-4 SL + MPEG-2 TS Additional channel coding : Reed-Solomon (204, 188) Broadcasting Media Research Group 14
15 What makes T-DMB? (2/2) Eureka-147 FIC: Fast Information Channel SI: Service Information Broadcasting Media Research Group 15
16 How can T-DMB be Delivered? (1/3) Frequency range Currently VHF TV Channel of 6MHz Another VHF TV channel could be used later on Number of broadcasting services 1.5MHz FDM x 3 6MHz - 1 ensemble = a multiplexed 1.54 MHz Possible No. of multimedia 6MHz Contents-dependent dynamic rate allocation 3 programs (1 program/an ensemble: up to 768 Kbps video) 6 programs (2 programs/an ensemble: up to 384 Kbps video) 9 programs (3 programs/an ensemble: up to 256 Kbps video) Broadcasting Media Research Group 16
17 LPacketizeHow can T-DMB be Delivered? (2/3) Transmission System Conventional DAB Transmitter EnMUX Manager Scheduling/Control/Monitoring signal Audio Source MPEG Audio Encoder MPEG-1/-2 audio stream SI, MCI PAD (text, image, etc.) Data Inserter N-PAD (file, stream, etc.) Service MUX STI Ensemble MUX ETI IOD ETI DMB Media Processor MPEG-4 Systems M4onM2 Encoder IOD Ensemble ReMUX ETI COFDM Modulator/ Up- Converter RF HPA/ Channel Filter OD/BIFS Generator OD/ BIFS Video SLP, Audio SLP, OD/BIFS SLP M4overM2 DVB-ASI *Outer Coder *Outer Coder : RS Encoder + Conv. Interleav er A/V Source Generator SMPEG-4 A/V Encoder Video Encoder MPEG-4 Audio Encoder Video ES rmpeg-4 Audio ES Scheduling/ Control/ Monitoring EnReMUX Manager BIFS : Binary Format for Scene COFDM : Coded-Orthogonal Frequency Division Multiplexing DVB-ASI : Digital Video Broadcast Asynchronous Serial Interface ES : Elementary Stream ETI : Ensemble Transport Interface HPA : High Power Amplifier IOD : Initial Object Descriptor MCI : Multiplex Configuration Information MPEG : Moving Picture Expert Group N-PAD : Non-Programme Associated Data OD : Object Descriptor PAD : Programme Associated Data RF : Radio Frequency SI : Service Information SL : Sync Layer STI : Service Transport Interface TS : Transport Stream Broadcasting Media Research Group 17
18 ompositpedge-2umtsohow can T-DMB be Delivered? (3/3) Terminal tuner Ensemble DEMUX MCDecoder Video IF ADC OFDM demodulator Decoder DAC MPEG speakeraudio sspdif XVHF ri2s Decoder Digital AMP MPEG-1/-2 layer II audio IOD Decoder MPEG-4 on MPEG-2 TS OD/BIFS Decoder RS+Conv. Interleaver MPEG-4 MPEG-4 Audio Decoder Broadcasting Media Research Group 18
19 What can we get from T-DMB? Customer -Better quality AV service under mobile environment -Enjoying interactive Multimedia Contents at anytime and anywhere without payment Industry Exploitation of new market Service provider - Less investment for mobile services - Deployment of the convergence between broadcasting and communication Broadcasting Media Research Group 19
20 Future of T-DMB Is T-DMB just for a domestic standard? No, it is going to be available toward the world Introduced to World DAB forum Field demonstration to the chairs group Demonstration results posted in the World DAB forum Homepage International T-DMB conference To world DAB chair, ITU-R 6W, Asian DAB committee During at Renaissance Hotel, Seoul World DAB forum approved T-DMB ETSI Standard (Expect to be approved Feb. 2005) Tentative service schedule AV service from the Summer of 2005 Interactive data service from the end of 2006 Bi-directional interactive service from the end of 2008 Broadcasting Media Research Group 20
21 Conclusion T-DMB, a new paradigm for the digital multimedia broadcasting Mobile reception with various data (audio/video/data) services Next generation broadcasting framework for anytime, anywhere and anydevice Towards the personalized broadcasting Foundation for ubiquitous information service Provision of various interactive services by harmonizing broadcasting and communications Broadcasting Media Research Group 21
22 Appendix: Milestones 12 DMB Expo 9/10~14 IBC 6/14~15 DMB 국제포럼 6/14~15 DMB 국제포럼 5 KOBA 12 DMB Expo 10 IBC 지상파 DMB 규격초안 7 미디어처리기 (SW) 개발 8 국가표준최종승인 11/17~12/5 세계최초시험방송대국민시연회 8 미디어처리기 (HW) 개발 11/16 T-DMB 휴대폰개발 (LG) 10~12 국제시연회 ( 독일, 브라질, 중국, 영국, 프랑스 ) 7 지상파 DMB 방송 5 위성 DMB 방송 2 ETSI 표준 1 WorldDAB 표준 Broadcasting Media Research Group 22
23 Appendix: What is available for T-DMB? (1/8) Test System MPEG-4 Broadcasting Server DMB Multiplexers DMB Transmitters Channel Emulator + Speaker left Signal Interferer + Speaker right DMB Receivers Broadcasting Media Research Group 23
24 Appendix: What is available for T-DMB? (2/8) Media Processor Stream Server Ensemble ReMuliplexer Broadcasting Media Research Group 24
25 Appendix: What is available for T-DMB? (3/8) T-DMB Terminals T-DMB Player USB-based PCI-based DSP-based Broadcasting Media Research Group 25
26 Appendix: What is available for T-DMB? (4/8) T-DMB Media Processor SW 미디어처리기 (2003 년 ) HW 미디어처리기 (2004 년 ) 지상파 DMB 재생기 Broadcasting Media Research Group 26
27 Appendix: What is available for T-DMB? (5/8) The first public demonstration Duration: 2003/11/17 12/5 T-DMB Transmission Systems Antenna Inside the vehicle Demonstration vehicle with T-DMB receiver Broadcasting Media Research Group 27
28 Appendix: What is available for T-DMB? (6/8) Studio: SBS Transmitter location: Kwanak Mountain Transmission power: 1kW Transmitter at Kwanak Mt. Chaneel Fileter Modulator G.704 connection Ensemble MUX (ETI NI) Service MUX Deonstration Vehicle TS Pumping/RS/ Interleaver DMB studio DMB terminal ETRI Player (PC) Broadcasting Media Research Group 28
29 Appendix: What is available for T-DMB? (7/8) T-DMB Coverage Broadcasting Media Research Group 29
30 Appendix: What is available for T-DMB? (8/8) Broadcasting Media Research Group 30
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