bcn을위한dmb 기술및응용 -...

Broadcasting Media Research Group 1

BcN을 위한 DMB 기술 및 응용

The 15th High-Speed Network Workshop 2005

Jeju-Island, 2005. 1. 26.

Broadcasting Media Research GroupDigital Broadcasting Research Division

1


Contents

1. Current Trends2. Convergence3. What is T-DMB?4. Domestic standard of T-DMB5. What makes T-DMB?6. How can T-DMB be delivered?7. What can we get from T-DMB?8. Future of T-DMB9. ConclusionA. What is Available for T-DMB?


Current Trends

Personalization Cell PhoneNomad No more fixed locationConvergence Today’s Buzzword

ServiceTerminalMedia

DMB Broadcast Network + Communication NetworkSimultaneous Use of Two homogeneous Networks

• Cellular Network• WiBro

Anywhere, Anytime, Any Contents, In a Personalized way


Convergence (1/4)

방송∙통신 융합융합형 서비스

• 인터넷 방송, IP TV, DMB, Mobile streaming• 양방향 데이터 방송

방송과 통신 영역의 Convergence• 콘텐츠, 전송 망, 사용자 단말

방통융합 배경/발전 방향방송의 디지털화 및 통신의 광대역화

• 디지털 방송 콘텐츠의 이종망간 서비스 가능

• BcN 기반의 다양한 접속망

– 초고속인터넷, 이동통신, 케이블, 휴대인터넷, 지상/위성/DMB방송망


Convergence (2/4)

방송∙통신 융합이란이종 망을 통한 다양한 단말의 방송 콘텐츠 서비스

• 이종 망 연동 – 방송망, 유무선인터넷, 이동통신망

• 다양한 통합 단말 – TV, PC, PDA, 휴대폰

• 디지털 방송 콘텐츠 – 대화형/맞춤형

UCA: Ubiquitous Content Access 서비스 제공

• Any Content– 사용자가 원하는 콘텐츠, 원하는 형태로(in a personalized way)

• Anywhere– 이종 접속망을 통한 다양한 단말에서

• Anytime– 맞춤형 방송


Convergence (3/4)

방송통신 융합 기술 개발방통융합 Infra-structure

• BcN – 광대역화/이동성, 이종접속망 연동

방통융합 Info-structure• 방통융합 멀티미디어 프레임워크

방통융합 멀티미디어 프레임워크이종망과 다양한 단말로 구성된 방송통신 융합 환경에서,

• 멀티미디어 콘텐츠의 제작/보호-전달-유통/소비의 단대단 서비스를

위한

• 포괄적이고 체계적인 상호연동 가능한 멀티미디어 서비스 골격

MPEG-21 Multimedia Framework• Interoperable data model

UMA: Universal Multimedia Access


Convergence (4/4)

방송과 통신의 융합 가속화 – 기술 개발의 필요성

Emergence of New Media

Expectation of Explosive Mass MarketConvergent Service의 주요 사항: 편리성, 경제성, 신뢰성(IPMP), 품질, etc.

콘텐츠AVNew Types다채널

콘텐츠콘텐츠AVNew Types다채널

단말PDR, PC, mPDR, PDA, CellPhone, DMB

단말단말PDR, PC, mPDR, PDA, CellPhone, DMB

망연동/접속망Broad., Internet, Mobile, WLAN

망연동망연동//접속망접속망Broad., Internet, Mobile, WLAN

방송매체T, C, S, DMB

방송매체방송매체T, C, S, DMB

ConsumerActive, SmartPersonal Need

ConsumerConsumerActive, SmartPersonal Need


T-DMB in BcN

Forward Link (Main Channel): Broadcast NetworkBackward Link (Return Channel): Wireless Network

BcN

T-DMB

S-DMB


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

DAB : Digital Audio Broadcasting

Changed from analogue to digital radio

Mobile broadcasting

CD quality audioWeather/ Stock informationT-commerce

Text & data service

Traffic info &Navigation



Service Delivery PathProvision of mobile multimedia (audio/video/data) broadcasting services at anytime, anywhere with anydevice

Service provider TV studio

Radio Studio

GPS

Additional info provider

Service transmission Network(IP/Data network) 휴대

이

Fixed receiver

Mobile terminalTerminal for moving ones

Mobile Mobile communication communication networknetwork



Service Delivery Path

Return ChannelServer

ServiceProvider

ContentsProvider

BSCMSC

BTS

PSTN

PSTN

1XEV-DOAccess Point

Router

CDMA 1xpacket data

1XEV-DOPacket data

AAAServer

BillingSystem

CDMA 1x-EVDO

TransmitterStation

MediaFLOCDS

Data broadcastingserver

Multiplexr

Media Encoder

Contentpackaging

ContentsProvider

MobilePortable

MobilePortable

MobilePortable

Internet

지상파 DMB /CDMA연동 단말

DMB Broadcatingnetwork

Voice data

BSC

Contentpackaging

Contentpackaging


Domestic standard of T-DMB (1/2)

Next generation digital broadcasting standard forum started the discussion on the domestic mobile multimedia broadcasting standard (2001.8.)

Ministry of Information and Communication announced the development of mobile multimedia broadcasting technology (2002.12.)

Finalized the draft of the domestic mobile multimedia broadcasting standard (T-DMB) (2003.6.)

TTA announced T-DMB as the domestic standard (2003. 8.)

TTA: Telecomunications Technology AssociationTTA: Telecomunications Technology Association


Domestic standard of T-DMB (1/2)Requirements

Receiving conditionReceivable on a moving vehicle up to 100Km/h

Basic audioCD-quality stereo

Multimedia servicesVideo

• 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 14496-1)• Provision of local and remote interactivity

CASProvision of CAS functionality

TTA: Telecomunications Technology AssociationTTA: Telecomunications Technology Association


What makes T-DMB? (1/2)

DAB specification (EUREKA-147: Rec. ITU-R BS. 1114 System A)

Bandwidth: 1.54MHzModulation: DQPSK/OFDMAudio Program Service: MPEG-1,-2 Layer 2Multiplexing: Eureka 147Inner Error Correction Code: Convolution Code (4,1,7) Variable Rate

Multimedia specificationVideo : MPEG-4 Part 10 AVC (H.264)Audio : MPEG-4 Part 3 BSACData broadcasting : MPEG-4 BIFSMultiplexing : MPEG-4 SL + MPEG-2 TSAdditional channel coding : Reed-Solomon (204, 188)


What makes T-DMB? (2/2)Eureka-147

FIC: Fast Information ChannelFIC: Fast Information Channel

SI: Service InformationSI: Service Information


How can T-DMB be Delivered? (1/3)

Frequency rangeCurrently VHF TV Channel of 6MHzAnother VHF TV channel could be used later on

Number of broadcasting services1.5MHz FDM x 3 ensembles @ 6MHz- 1 ensemble = a multiplexed stream @ 1.54 MHz

Possible No. of multimedia programs @ 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)


How can T-DMB be Delivered? (2/3)Transmission System

Ensemble MUX

Ensemble ReMUX

ETI

ETI RF

EnReMUXManager

Conventional DAB T ransm itter

A/VSource

VideoES

Audio

ES

Video SLP,Audio SLP,

OD/BIFS SLP

*Outer Coder : RS Encoder + Conv . Interleaver

Sched

ulin

g/

Co

ntro

l/M

onito

ring

MPEGAudio

Encoder

DataInserter

COFDMModulator/

Up-Converter

HPA/Channel

Filter

PAD(text, image, etc.)

N-PAD(file, stream, etc.)

MPEG-1/-2audio stream

DVB-ASIM4overM2

SI, MCI

Scheduling/Control/Monitoring signal

EnMUXManager

ServiceMUX

STI

OD/BIFSGenerator

IODGenerator

SL

Packe

tizer

MPEG-4Video

Encoder

MPEG-4Audio

Encoder

OD/BIFS

IOD

AudioSource

M PEG-4 A/ V

Encoder

M 4onM 2

BIFS : Binary Format for Scene

COFDM : Coded-Orthogonal Frequency Division MultiplexingDVB-ASI : Digital Video Broadcast Asynchronous Serial Interface ES : Elementary StreamETI : Ensemble Transport Interface

HPA : High Power AmplifierIOD : Initial Object DescriptorMCI : Multiplex Configuration InformationMPEG : Moving Picture Expert GroupN-PAD : Non-Programme Associated Data

OD : Object DescriptorPAD : Programme Associated DataRF : Radio FrequencySI : Service InformationSL : Sync Layer

STI : Service Transport InterfaceTS : Transport Stream

ETI

*OuterCoder

M PEG-4 Sy s tems Encoder

DM B M edia Processor


How can T-DMB be Delivered? (3/3)

MPEGAudio

Decoder

MPEG-1/-2layer II audio

tuner ADCOFDM

demodulator

MPEG

-2 T

SD

EM

UX

V HF IF

DAC

Com

posito

r

I2S

EnsembleDEMUX

MPEG-4Video

Decoder

MPEG-4Audio

Decoder

OD/BIFSDecoder

IODDecoder

RS+Conv. InterleaverDecoder

speakers

SPDIF DigitalAMP

MPEG-4 onMPEG-2 TS

Terminal


What can we get from T-DMB?

Service provider

- Less investment for mobile services

- Deployment of the convergence between broadcasting and communication

Customer

-Better quality AV service under mobile environment

-Enjoying interactive Multimedia Contents

at anytime and anywhere without payment

IndustryExploitation of new market


Future of T-DMB

Is T-DMB just for a domestic standard?No, it is going to be available toward the worldIntroduced 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 2004.6.14-15 at Renaissance Hotel, Seoul

World DAB forum approved T-DMB• ETSI Standard (Expect to be approved Feb. 2005)

Tentative service scheduleAV service from the Summer of 2005Interactive data service from the end of 2006Bi-directional interactive service from the end of 2008


Conclusion

T-DMB, a new paradigm for the digital multimedia broadcasting

Mobile reception with various data (audio/video/data) servicesNext generation broadcasting framework for anytime, anywhere andanydeviceTowards the personalized broadcasting

Foundation for ubiquitous information serviceProvision of various interactive services by harmonizing broadcasting and communications


Appendix: Milestones

200320032003

6지상파 DMB 규격 초안

6지상파 DMB 규격 초안

7미디어처리기 (SW) 개발

7미디어처리기 (SW) 개발

10~12 국제 시연회(독일, 브라질, 중국, 영국, 프랑스)10~12 국제 시연회(독일, 브라질, 중국, 영국, 프랑스)

200420042004 200520052005

8국가표준 최종 승인

8국가표준 최종 승인

11/17~12/5세계 최초 시험방송대국민 시연회

11/17~12/5세계 최초 시험방송대국민 시연회

8미디어처리기 (HW) 개발

8미디어처리기 (HW) 개발

1WorldDAB 표준

1WorldDAB 표준

11/16T-DMB 휴대폰 개발 (LG)11/16T-DMB 휴대폰 개발 (LG)

5위성 DMB 방송

5위성 DMB 방송

7지상파 DMB 방송

7지상파 DMB 방송

5KOBA5KOBA

10IBC10IBC6/14~15

DMB 국제포럼

6/14~15DMB 국제포럼

9/10~14IBC9/10~14IBC

2ETSI 표준

2ETSI 표준

12DMB Expo12DMB Expo

12DMB Expo12DMB Expo6/14~15

DMB 국제포럼

6/14~15DMB 국제포럼


Appendix: What is available for T-DMB? (1/8)

MPEG-4Broadcasting

Server

DMBMultiplexers

DMBTransmitters

Channel Emulator+ Speaker left

Signal Interferer+ Speaker right

DMBReceivers

Test System



Media Processor

Ensemble ReMuliplexer

Stream Server



T-DMB Terminals

T-DMB Player

USB-based

PCI-based

DSP-based



T-DMB Media Processor

SW 미디어 처리기 (2003년) HW 미디어 처리기 (2004년)

지상파 DMB 재생기



The first public demonstrationDuration: 2003/11/17 – 12/5

T-DMB Transmission Systems Antenna

Demonstration vehicle with T-DMB receiverInside the vehicle



DMB studio

Transmitter at Kwanak Mt.

Deonstration VehicleService MUX

Ensemble MUX(ETI NI)

TS Pumping/RS/Interleaver

Chaneel Fileter

G.704 connection

Modulator

DMB terminal

ETRI Player(PC)

Studio: SBS

Transmitter location:

Kwanak Mountain

Transmission power: 1kW



T-DMBCoverage

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