TDMB and its Convergence with Telecommunication

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T-DMB and its Convergence with Telecommunication

• Yong Han Kim (yhkim_at_uos.ac.kr)
• Associate Professor, University of Seoul
• Chairman, DMB Sub-Committee,
• Next-Generation Digital Broadcasting Standards
  Forum (NGBF)

WWRF 13 Meeting (2005. 3. 2. Jeju Silla Hotel)
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Next-Generation Digital Broadcasting Standards
Forum (NGBF)

• Domestic Open Forum for the Standardization of
  New Broadcasting Media
• Members broadcasters, receiver manufacturers,
  middleware companies, encoder manufacturers,
  research organizations, government organizations,
  and universities
• Structure

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Next-Generation Digital Broadcasting Standards
Forum (NGBF) Brief History

• 1993
• Established as HDTV Co-Development Consortium
  lead by Prof. Choong-Woong Lee, Seoul National
  University
• 1997
• Re-named as Next Generation Broadcasting
  Consortium
• Collected opinions on terrestrial digital TV,
  digital audio broadcasting, etc.
• 2000
• Re-established as Next-Generation Digital
  Broadcasting Standards Forum on May 24.
• President of the Forum Professor Sang-Uk Lee,
  Seoul National University
• 2001-2005 Produced all the first draft of
  domestic T-DMB standards (Work still goes on.)
• 2005 New President of the Forum Prof. Jechang
  Jeong, Hanyang Univ.

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Contents

• Overview of T-DMB (Terrestrial Digital Multimedia
  Broadcasting)
• T-DMB Data Services
• T-DMB and its Convergence with Telecommunication

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Overview of T-DMB
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Concept of DMB

Extend the concept of DAB(Digital Audio
Broadcasting) to DMB (Digital Multimedia
Broadcasting) ? ITU names it DAB (Digital Audio
Broadcasting), but Korea uses the term,
DMB, to highlight the characteristics of mobile
multimedia broadcasting.
Mobile
CAR AV
PDA
Satellite DMB
(ITU-R System E)
Portable
Cell phone
Broadcasting Centers
Audio
Lap top/PC
Fixed
Terrestrial DMB
(ITU-R System A)
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T-DMB Transmission System
NPAD
Ensemble Mux
VHF
Packet Mux
Data Server
Fixed
PAD
HP Amp.
Portable
OFDM Mod.
Video Encoder
AV Mux
Add. Channel Coding
Mobile
Audio Encoder
Data Encoder

• PAD Program Associated Data
• NPAD Non-Program Associated Data
• OFDM Orthogonal Frequency Division Multiplex

• DAB (Eureka-147) System
• T-DMB Addition

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T-DMB Standard (TTAS.KO-07.0024)

• Compression Layer
• Video H.264 MPEG-4 Part 10 AVC (Advanced
  Video Coding ) Baseline Profile _at_ Level 1.3
• Audio MPEG-4 Part 3 ER-BSAC (Bit Sliced
  Arithmetic Coding)
• Auxiliary Data MPEG-4 BIFS Core2D Profile
• Multiplexing Layer M4onM2
• MPEG-4 SL
• MPEG-2 TS (PES)
• Channel Coding Layer
• Reed-Solomon Coding (204,188)
• Convolutional Interleaving
• Req. BER Performance less than 10-8
• Transmission Layer
• DAB (EUREKA-147) Stream Mode

ETSI and ITU-R standardization in process!!
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Service Visions of T-DMB (1)

• Why another TV-like service?
• Excellent mobile reception (TV in my
  car/pocket/palm)
• Receivers combined with cell phones
• Receivers combined with telematics terminals in
  automobiles
• Independent portable receivers
• PDA
• Notebook PC

T-DMB
DAB
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Service Visions of T-DMB (2)

• Why another mobile-phone-like multimedia service?
• free services like conventional TV
• WiBro will provide multimedia services at less
  cost than mobile-phone networks.
• high-bandwidth data box in my pocket for free
  reception ? charges for data-service content
  usage are necessary
• high cost for content production
• new business models
• DMB-commerce
• A variety of interactive data services
• installation of indoor gap-fillers
• accelerating convergence of
• broadcasting and telecommunication

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Service Visions of T-DMB (3)

• Yes, T-DMB also provides FM-like services with
  the following upgrades (legacy DAB services)
• CD-quality Audio Broadcasting beats analog FM
• Audio possibly with slide show
• Music album jacket photos
• Studio cuts of live music show with a DJ and
  his/her guests
• T-DMB provides alternative upgrades for legacy
  DAB services
• DAB audio technology (MPEG-1 Audio Layer II,
  MUSICAM) requires 384 Kbps for CD-quality audio.
• ? Higher-compression audio codec is available in
  T-DMB (96 Kbps)
• ? Slide-show and even video-clip-show are
  possible in T-DMB (MPEG-4 BIFS)

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Characteristics of T-DMB

• Valid (pure-content) bitrate per multiplex (Band
  III, 1.5Mhz) 1 Mbps
• Mobility Max. 200 km/h
• Coverage without gap-fillers FM Coverage
  (emission power 1-2 kW)
• Audio services (legacy DAB service)
• CD-quality stereo (DAB MUSICAM)
• Video services
• Video VCD-quality, 352288_at_30Hz, 5-7 in. LCD
  (H.264 MPEG-4 AVC)
• Audio max. CD-quality stereo (MPEG-4 ER-BSAC)
• Interactive data broadcasting (option) text
  graphic (MPEG-4 BIFS)
• Data services (legacy DAB services) optionally
  many (BWS, EPG, Slide-show, Interactive service
  protocols, etc.)
• Number of channels enough to promote market
  penetration
• of video programs Min. 6, Max. 12 (Seoul and
  its vicinity)

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T-DMB Data Services
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T-DMB data services (legacy DAB )

• Basic Protocols
• Multimedia Object Transfer (MOT) Protocol
• IP Tunneling
• Transparent Data Channel (TDC)
• Interactive Service (Network-Independent/dependent
  protocols) CDMA, IMT-2000, WiBro included
• Data applications
• Broadcast Web Site (BWS) NEW baseline Profile
• JPEG Slide Show
• Electronic Program Guide (EPG) using XML
• Voice EPG

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T-DMB-unique Interactive Data Broadcasting using
MPEG-4 BIFS
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T-DMB interactive data service scenario
T-DMB
wirelss Internet
VoD AoD Cartoon-on-Demand DMB-commerce Ring
Tone Color ring .
MPEG-4 BIFS

• Broadcaster-push data overlay (in a shape that
  the broadcasters want)
• Local interactivity
• Viewer-pull data overlay
• From BWS pages (local)
• From the information providers through a
  back-channel

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Examples of BIFS - hyperlink
Click !
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T-DMB and its Convergence with Telecommunication
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Perspectives of Mobile Multimedia
Broadcasting/Streaming in Korea
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WiBro (Wireless Broadband Internet)

• WiBro is a new wireless Internet service that
  uses 2.3 GHz frequency band and can provide
  high-speed Internet access even in high-speed
  mobile environment. Its advantages are
• Much lower service charges than Ev-Do
• Much higher-speed Internet access than Ev-Do
• Mobile Internet access in high-speed mobile
  environment
• Much wider coverage than wireless LAN-based
  services
• Some Design Parameters of WiBro
• Channel Bandwidth 10 MHz
• Transmission speed per subscriber
• Uplink Min. 128 Kbps, Max. 1 Mbps
• Downlink Min. 512 Kbps, Max. 3 Mbps
• Mobility
• Max. 60 Km/h
• Service Coverage
• Pico Cell 100 m
• Micro Cell 400 m
• Macro Cell 1 Km

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Ideal Terminal Device
A single, multi-purpose, highly-personalized,
hand-held device
T-DMB
S-DMB
WiBro
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DMB-commerce
One click today leads to the product at my door
in the next day (and unhappy card bill.)
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T-DMB WiBro Video Services
MPEG-4 BIFS

• Regular Videos
• News
• Education
• Sports
• Drama, Cinema

• Special Videos
• News (topic trace, Interview)
• Education (more info)
• Sports (Soccer goal collection)
• Drama, Cinema (NG collection)

DMB-triggered video streaming
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Q A