Digital Multimedia Broadcasting
November 2007 Jo, GueJo
Contents I
Introduction of DMB
II
Service in Korea
III Business Model IV
DMB Overseas Launching Status
V
Future Service 2
I Introduction of DMB
3
1. Definition Provides video and data services as well as CD-quality audio service AV and data standard extension of Digital Audio Broadcasting(DAB) Fully backward compatible with Eureka-147 DMB Transmitter
GPS
Radio Studio
TV Studio
i Additional info provider
Fixed receiver
Distribution Network Terminal for Moving vehicles
Mobile Terminal
Mobile Communication network 4
2. Characteristics of T-DMB Personal services using individual receiver
Personal
. Mobile phone, PDA, Notebook PC, DMB receiver
Seamless reception of broadcasting contents
Mobile
. Any time, anywhere . Good reception at the speed of 150 km/h
Bidirectional services linked with mobile communication network
Interactive
. PPV, on-line shopping, internet services
Personal Mobile Interactive Multimedia Broadcasting Service 5
3. Available Multimedia Service Audio only service Stereo(CD-like)
Video service Video : VCD quality(7” LCD) Audio : Stereo(FM-like) Program related Data
Data service Electronic Program Guide Headline news, Weather, Stocks Traffic, Navigation Slide show, Broadcasting Web Service, etc. 6
4. System Structure Modulator
DAB system + Multimedia Processor
Radio Transmitter
MUSICAM Encoder
TV T-DMB Encoder
= DMB
Ensemble MUX
Data TTI Streamer BWS Encoder
Audio Service (MUSICAM)
Packet or stream Mode
Data Service
Video Associated Audio (Interactive) Data
Video Encoder (H.264) Audio Encoder (ER-BSAC)
Video service TS Mux
RS Encoder (204,188)
Conv. Interleaver
DAB MUX Stream Mode
Additional modules for T-DMB
OFDM Modulation Transmitter
Eureka-147 DAB System (ETSI 300 401)
7
5. Transmission Parameters Signal
COFDM
Modulation
DQPSK
Channel Coding
Convolutional : variable rate, constraint length = 7
Time Interleaving
Ms
Depth = 384
Frequency Interleaving
MHz
Width = 1.536
System Bandwidth
MHz
1.536 MHz
Effective Data Rate
Mbps
0.8 ~ 1.7 Mbps
Mode Application Frequency Band
GHz
Sub carriers
I
II
III
IV
Terrestrial(SFN)
Terrestrial
Satellite/Cable
Terrestrial
< 0.375
< 1.5
<3
< 1.5
1,536
384
192
768
1
4
8
2
Sub carrier interval
KHz
Guard interval
us
246
62
31
123
Symbol length
us
1,000
250
125
500
Frame length
ms
96
24
24
48
※ COFDM : Coded Orthogonal Frequency Division Multiplexing ※ DQPSK : Differential QPSK
8
6. Spectrum Utilization Usable Spectrum for T-DMB VHF Band-III (TV ch-7~ch13, 174~216MHz) L-band (1452~1492MHz) Example: Ch.12 in Korea Block A
512kHz
1.536MHz
192kHz
Block B
Block C
192kHz
1.536MHz
1.536MHz
KBS
SBS
MBC
496kHz
1 TV Channel (6MHz)
204MHz
210MHz
Effective Data Rate 1.152Mbps video (512kbps)
audio 1 audio 2 audio 3 (128kbps) (128kbps) (128kbps)
video 1 (512kbps)
data (256kbps)
video 2 (512kbps)
data (128kbps) 9
7. Technologies for T-DMB A/V Encoding MPEG-4 Part 10 AVC(H.264) and BSAC/AAC Increase Frequency Usage Efficiency
Interactive Data MPEG-4 System core2D Profile(BIFS) Video Program associated Data Service
MPEG-4 AVC Video
MPEG-4 BSAC/AAC Audio
MPEG-4 BIFS Interactive Contents
MPEG-4 SL MPEG-4 SL MPEG-4 SL Encapsulation Encapsulation Encapsulation adaptation MPEG-2 TS Multiplexing
Error Correction RS-Coding, Convolutional Interleaving High Quality in Audio/Video
transport Forward Error Correction
Transmission OFDM(Orthogonal Frequency Division Multiplexing) Good service quality in high speed moving vehicle
EU-147 DAB Stream Mode 10
8. T-DMB Service Category and Standard Type Audio
Quality
Technology
Near CD quality stereo(BER 10-4) MUSICAM(MPEG-1,2, layer 2) Video
7” display
MPEG-4 AVC(H.264)
Audio Near CD Quality Video Data Many applications streaming (DMB) Multiplex A/V/D Mobile, Urban Channel (BER 10-8) Data
MPEG-4 BSAC MPEG-4 BIFS MPEG-4 SL, TS RS(204, 188), Convolutional Byte interleaver
EPG, news, weather, stock, traffic PAD, NPAD,TDC, MOT, BWS, IPinformation, etc. tunneling, Slideshow, etc.
※ AVC : Advanced Video Coding, PAD : Program Associated Data, TDC : Transparent Data Channel, ※ BWS : Broadcasting Web Site, BSAC : Bit-sliced Arithmetic Coding, EPG : Electronic Program 11
9. Broadcasting Protocol in T-DMB ◆ Broadcasting Web Site ◆ Local Interactive Service ◆ JPEG Slide Show ◆ EPG
IP MPEG4 MPEG4 TDC Tunneling A/V Data MPEG-4 SL Audio PAD NPAD MPEG-2 TS FEC Data Service Video Service Audio Service Packet Mode Stream Mode MSC Eureka-147(System-A)
2 Ch TMC MCI EWS & SI FIDC FIC
Multi DLS TDC Ch. 5.1
◆ TPEG, DGPS etc
MOT
※ DLS : Dynamic Label Segment, EWS : Emergency Warning System, FIC : Fast Information Channel ※ FIDC : Fast Information Data Channel, IP : Internet Protocol, MCI : Multiplex Configuration Information ※ MOT : Multimedia Object Transfer, MSC : Main Service Channel, NPAD : Non PAD ※ PAD : Program Associated Data, SI : Service Information, TDC : Transparent Data Channel ※ TMC : Traffic Message Channel 12
II Service in Korea
13
1. Commercial Service in Korea Launched in Dec. 2005 covering Seoul metropolitan area Total Channel : Video 7 Audio 13 Data 8 Spectrum : VHF Band III (TV channels 8 & 12) KBS
MBC
SBS
YTNDMB
U1media
HankookDMB
Terrestrial VHF Bandwidth AFN ch2
T-DMB ensemble
T-DMB Channel
KBS1
SBS KBS2 ch3
ch4
ch5
ch6
ch7
ch8
MBC
EBS
ch9 ch10 ch11 ch12 ch13
U1 media
YTN DMB
Korea DMB
MBC DMB
KBS DMB
8A
8B
8C
12A
12B
Video 2 Data 1
Video 1 Audio 2 Data 1
Video 1 Audio 2 Data 1
Video 1 Audio 3 Data 1
Video 1 Audio 3 Data 1
SBS DMB 12C Video 1 Audio 3 Data 3
14
2. Nationwide DMB Network 13
13 봉의산
Metropolitan area 12
13 괘방산
13 8
13
태기산
용문산
8 관악산
봉황산
13 백운산
9 일월산
9 우암산 11
11
9
가엽산
흑성 산
원효봉
13 DMB broadcasters for nonMetropolitan area
함백산
70Km
8
학가산
11
7
계룡산 식장산
6 regional broadcasting areas
7 팔공산
Nationwide commercial T-DMB service: mid of 2007
모악산
9
9
감악산
8
노고단
9 망진산
무등산
8
7 조항산
12
12
8 대둔산
무룡산 12
12
12
불모산 황령산
망운산
7 남산
13 7
13 견월악 삼매봉
8
15
3. Terminal Types Totally 6.3million Receivers sold in Korea until the last July Unit: 10,000
Cellphone 39.8%
357 Feb. Feb 2007
134.
272 249 147 .
PDA, PMP 8.9%
Navigation 43.6%
37 55
Others 6.5%
Notebook 1.2%
625 July . 2007
8.0
25 41
7.0. Others
Total
16
4. Available Terminals High Price Devices $400 ~ $800
Erantech iubi BLUE
DigitalCube i-STATION
Zen Networks LEO V10
New Media Life TAVI
Samsung yepp ▪▪▪ more
neoSOL CLIOD Gigatelecom CLIOD PMP3550 Tube ND-100
Mid Price Devices $200 ~ $500
DigitalCube i-STATION V35
Cowon Hyundai Autonet A2 T-DMB HNA-6220
Samsung DMB-T450
Samsung DMB-T750
▪▪▪ more Samsung SPH-B2300
P&C PT-K1800
P&C PT-L1800
LG KD-1200
LG SB-100
LG LT-1000
Low Price Devices
▪▪▪ more
$50 ~ $120
Cobalt Technology DMB STICK-K1
Cerings CTD-100
UVBro Technology ARTEMIS
MNBT UD-100
Caros KSD-7070S
Perstel DR 402 VK
17
5. Responses from Users T-DMB Satisfaction Rate Item
Very good
5.0
Satisfaction: 77.5%
Good
0.0
49.0
Same contents to home TV channel
27.7
Mobile reception
16.1
Audio & Video reception with a single device Contents only for DMB
22.5
So so Bad
Satisfaction
72.5
Unsatisfaction: 22.5%
Dissatisfaction
%
Watch any where
5.8 1.3
Coverage
73.3
Same contents to home TV channel
11.1
Contents
6.7
AV quality
6.7
18
III Business Model
19
1. Business Model
TV Radio
Free to air Revenue from the Advertisement Fast Creation of Customer Base
Pay service Data Services (Interactive) Flat Rate/Usage Based ( + Comm. Expenses )
Free Service Revenue
Advertisement
Market Creation
Develop Pay Services Data Service , TTI Cooperate with telco 20
2. Business Model Advertisement • Condition 5 million users • Total revenue 1 Video Channel ☞US$ 80 million/year 1 Audio Channel ☞US$ 18 million/year
Pay Services • EPG • TPEG • Location Based Services ☞ Shopping ☞ Restaurant • Weather • Stock
Added Services • TVTV-Portal • Video/Audio related data services ☞ VOD, MOD, Capture ☞ Detailed program guide • Program community ☞ SMS Reply ☞ Chatting between audiences • Network game/quiz • M-Commerce
21
IV DMB Overseas Launching Status
22
1. DMB Overseas Launching Status U.K London (’04.12, ’05,9)
Norway
France Paris, Cannes(’04.12, ’05.04)
Germany Munich, Berlin Hanover
Italy (07.2~)
Vatican City (07.2~) Nether land (‘07.6~)
Canada
China Korea (05.12.~) India
Hong Kong
Ghana (‘07.7~) Indonesia (’07.3~)
South Africa (’07.1~)
Commercial services: 3 countries Preparing: 3 countries Trial Test: 9 countries
23
V Future Service
24
1. Future Service : Personalized T-DMB Dynamic program guide and contents browsing according to program genre and user preferences ToC (Table of Contents) based browsing in terms of segment units Event/index-based summary and access for news programs Keyword-based segment search
※ Services: Personalized News, Personalized T-Learning, etc. 25
2. Future Service : Advanced T-DMB Doubled Data Rate 1.062 Mbps 2 Mbps 1
Multichannel Services double the number of programs
2
High quality AV service (7” 15” SD-quality video and 5.1 ch audio)
26
3. Future Service : 3D T-DMB 3D DMB Verification System 3D AV media processors on T-DMB Transmitter/Receiver Features •Compatible with the standard T-DMB •2D/3D display selectable R 3D Digital Broa ealis t
3D lay Multimedia sp Di Broadcastin
d c ic as tin g
3D DMB verification system
Applications
gB DM
3D Cellular phone 3.5” Autostereoscopic display
3D DMB Receiver prototype
3D Portable media player
3D Receiver over T-DMB
27
THANK YOU Jo, GueJo
[email protected]
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