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ITU Asia-Pacific Centres of Excellence Training on
Digital Broadcasting Technologies and Implementation
5-7 FEBRUARY 2014, New Delhi, India
Tomoyuki Ohya
Director, Senior Vice President, mmbi, Inc.
Chair, Technology Working Group, ISDB-T Multimedia Forum
ISDB-Tmm Mobile Multimedia
Broadcasting in Japan
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Digital Switch Over in Japan 1
Analog Switch Off (24 July 2011*) Except Fukushima, Miyagi, Iwate prefectures which were pospponed to 31 March 2012 because of 3.11, Great East Japan Earthquake
470~710MHz (13~52ch)
90 108 170 222 710 770 470
(60MHz bandwidth) (52MHz bandwidth)
(18MHz bandwidth)
(240MHz bandwidth)
【Digital TV】
【 UHF】 【 V-Low】 【 V-High】 【 UHF】
470~770MHz (13~62ch)
90~108MHz (1~3ch)
170~222MHz (4~12ch)
【Analog TV】
【 V-Low】 【 V-High】 【 UHF】
(370MHz bandwidth)
90 108 170 222 770 470
mmbi, Inc. launched “NOTTV” service on
April, 2012, using 6MHz in V-High
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Quick Overview of NOTTV 2
NOTTV is a subscription-based, nation-wide Mobile Multimedia
Broadcasting service for smart phones and tablet devices, the
service which was commercially launched in April 2012 in Japan,
using a part of VHF spectrum after analog TV switch off.
NOTTV subscriber reached 1,531,014 at the end of December 2013.
Based on ISDB-Tmm, a family of the ISDB-T global standard.
8.8 Million+ NOTTV compatible Android smart phones and tablet
devices have been sold in Japan from manufacturers such as Fujitsu,
LG, NEC, Samsung, Sharp, Sony, and Panasonic.
NOTTV program mainly features on live, original contents such as
sports, music, entertainment, and drama; broadcasting 3 real time
channels, including a 24 hours news channel, and 200+ storage type
contents for JPY 400 (USD 4) per month.
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Table of Contents 3
(1) ISDB-Tmm Technologies
(2) ISDB-Tmm Broadcasting Network
(3) NOTTV Broadcasting Services
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ISDB-Tmm Services
(2) File-based Broadcasting Service (1) High-quality Real Time Service ■ Providing high quality original live contents
and licensed drama/movie programs Audio visual contents as well as digital contents by broadcasting channels are stored in mobile terminals temporarily. Subscribers are able to watch their favorite contents at their convenient timing. 。
3G
LTE
(3) Use of Communications and Broadcasting Channels
Concert
News
Watch real-time programs
Sports Watch on your spare time
Music
Movies
Newspaper
Novels
Tickets
Content
Complementation
License
Submitting comments
Recommendations
Network
servers
Social Networking
Service (SNS)
4
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ISDB-Tmm Protocol Stack 5
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Physical Layer Specifications of ISDB-Tmm 6
ISDB-Tmm ISDB-T
Bandwidth 6000 / 14 = 428.57 kHz, 7000/14 = 500 kHz, 8000/14 = 571.428 kHz
Segments
Any combination of 1, 13 segments (connected 33 segment format is defined in
ARIB-STD-B46) 1, 3, 13
# of radiated carriers / segment
108 (Mode 1), 216 (Mode 2), 432 (Mode 3)
Modulation OFDM (DQPSK, QPSK, 16QAM, 64QAM)
Forward Error Correction
Outer Code: Reed Solomon (204, 188) Inner Code: Convolutional Code (7/8, 5/6, 3/4, 2/3, 1/2)
Hierarchical Transmission
Possible
SFN Operation Possible
Guard interval duration
1/4, 1/8, 1/16, 1/32 of active symbol duration
Inner interleaving
Intra and inter segments interleaving (frequency interleaving). Symbol wise convolutional interleaving 0, 380, 760, 1520 symbols (time interleaving)
Outer interleaving
Byte wise convolutional interleaving, I = 12
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Physical Layer Configuration 7
13 Segments(6MHz) 13 Segments(6MHz) 1 Seg x 7
Call for new broadcasters on going (currently vacant)
Call for new broadcasters on
going (currently vacant)
• 16 QAM • rate 1/2 inner convolutional code • guard interval : 1/4 symbol
(256μsec)
• 64 QAM • rate 3/4 inner convolutional code • guard interval : 1/8 symbol (126μsec)
• QPSK • rate 2/3 inner convolutional code • guard interval : 1/8 symbol (126μsec)
● medium FEC for moderate data rate and for moderate error resiliency
● long guard interval for nationwide SFN
(cf.) ISDB-T Terrestrial TV
ISDB-Tmm
13 Segments(6MHz)
● strong FEC for low for high error
resiliency
● low FEC overhead for high
data rate under reliable
transmission channels
12 Seg for HDTV
1 Seg for mobile
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Technical Enhancements to One-Seg 8
(1) High Quality Media Coding
•ITU-T H.264/MPEG-4 AVC Main Profile
- 720x480 (VGA+), 30 fps
•MPEG HE-AAC, MPEG Surround
(2) Advanced use of Meta-data
•EPG/ECG
•Charging
•Contents delivery control
(3) High Efficiency File Delivery Protocol
•Efficient File Transmission for Mobile Environments with AL-FEC
•Lost data in broadcast channel can be compensated with communication channels
(4) Advanced Content Protection
•Hybrid use of Broadcast channel and Communications channel for delivering license information
•Support both for real-time services and file-based services
•Contents transfer in case of cellular terminal replacement
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9
ISDB-Tmm Broadcasting Network
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0
25
50
75
100
125
150
2012.4 2013.4 2014.4 2015.4 2016.4
Operating 61 Transmitters (as of January, 2014) 10
60% House Hold Coverage at Service Launch
90%+ House Hold Coverage within 3 years from Service Launch
# of Tx Stations
House Hold Coverage (%) Now
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Contents Broadcaster (mmbi, Inc)
TS for
Real Time Services
File Based Services
TS for
Other Contents Broadcasters
Multiplexer
13 Segment Format
TS
Broadcasting Network Operator (Japan Mobilecasting, Inc.)
TS
33 Segment Multiplexer
Satellite Uplink Station
GPS
SFN Synchronization
GPS
ISDB-Tmm Broadcasting Network 11
*61 Txs installed as of January 2014 Additional 65 Txs planned
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ISDB-Tmm Antenna 12
535m Hight, 4 Stack, 16 Surface Twin Loop Antennas Installed on Tokyo Sky Tree (25kw @ 14.5MHz, 33 segments)
Display Only
Display Only
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Tx for Tokyo Sky Tree
Tx (25kW) Cooler
Tx monitors
RF Switch Filter Dummy load
13
Display Only
Display Only Display Only
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ISDB-Tmm Transmitters 14
Nagoya Hiroshima
Effective reuse of existing towers and buildings used for analog TV
- located quite suitable for effective area coverage
- low cost Tx contraction
- easy to avoid interference to TV boosters and CATVs
Display Only Display Only Display Only
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Field Measurement Results in Tokyo 15
Tx Site 1 (Sawara)
Tx Site 2 (Yokohama)
Prefectural Boundary
City Boundary
Measurement Course (with corresponding C/N)
30km
Tx Site 1 (Tokyo - Sumida)
Strong Signal Reception Around Tx
Sites
Seamless Coverage with SFN
C/N :>15 (Good receiving environment)
C/N :10-15 (No difficulty for receiving)
C/N :5-10 (Partially Receivable) C/N :1-5 (Difficult to receive)
C/N :0-1 (Not receivable)
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16
Service Aspect of NOTTV
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NOTTV Services 17
3 channels of real time broadcasting services and file-based services
NOTTV 1 is main channel, NOTTV 2 is flexible channel, NOTTV news is
24 hr. live news program
For file-based service, electronic newspaper, music clips, etc. are delivered
every day.
Real-time broadcasting ;
Live programs
24hr. Live news / Live sports (baseball, soccer, golf etc.) / Live concert / Live
show etc.
Recorded programs
Drama (original and purchased) /
Music programs /
Entertainment programs
(original and purchased)
File-based broadcasting;
( 1 Giga byte of contents are delivered every day)
Electronic newspaper / Electronic weekly
magazine (coming soon) / horoscope / etc.
Contents which are missed in real time
File Based Service
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Storage Based Broadcasting 18
855
1516
1155
955
1360
881
1195
5896
6481
6681
6031 6321 6326 6321
-500
500
1500
2500
3500
4500
5500
6500
7500
0
500
1000
1500
2000
2500
3000
Aug. 26 (Mon) Aug. 27 (Tue) Aug. 28 (Wed) Aug. 29 (Thu) Aug. 30 (Fri) Aug. 31 (Sat) Sep. 1 (Sun)
Aug. 26 (Mon) Aug. 27(Tue) Aug. 28 (Wed) Aug. 29 (Thu) Aug. 30 (Fri) Aug. 31 (Sat) Sep. 1 (Sun)
Digital Contents 35MB 35MB 35MB 35MB 35MB 35MB 35MB
Music Clip 300MB(28min) 300MB(28min) 300MB(28min) 300MB(
28min) 300MB(28min) 300MB(28min) 300MB(28min)
Animation 115MB(26min) 315MB(24min,
26min) 515MB(24min, 30min,
26min) 115MB(
26min) 115MB(26min)
400MB(24min x 2)
Drama 90MB(13min) 90MB(13min) 90MB(13min) 90MB(14min) 90MB(14min) 400MB(58min)
Talk Show 300MB(40min) 60MB(1min x 6) 200MB(
28min) 400MB(58min) 6MB(1min) 60MB(6min)
Information 15MB 700MB(29分min
58min) 200MB(29min) 200MB(29min) 200MB(29min) 240MB(5min, 26min)
Hobby 200MB(30min)
Movie 300MB(37min)
Co
nte
nts
siz
e o
f th
e d
ay [
MB
yte
]
Cu
mu
lati
ve s
tora
ge u
sage
[M
Byt
e]
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Extremely Long Time Interleaving with Application Layer FEC 19
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Day1 Day2 Day3 Day4 Day5 Day6 Day7
• With IP-based application layer FEC, extremely long time interleaving can be achieved.
• Life-style interleaving effect is observed with day-long transmission.
Sto
rage
Co
mp
leti
on
Pro
vab
ility
(rel
ativ
e to
7-d
ay lo
ng
inte
rle
avin
g)
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Storage Based Broadcasting Contents (1/2) 20
Music Clip
Link to the Music Store for downloading are available.
“ Mainichi Newspaper TAP-i NOTTV edition”
The newspaper will be automatically
delivered to smartphones and tablets in
the morning.
Tap the thumbnail to read the article
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Audience Participation type Quiz Show 21
- Audio, Video on MPEG TS - Interactive Application on Broadcast
Markup Language (BML) with touch panel control
×
3G/LTE Network
Answer Check through Communications Network
- Audiences, who won all the quiz, get money transfer immediately through mobile payment
Mobile Network Operator
Broadcasting Network
“One Million Yen Mobile Sherlock”
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Earthquake Early Warning (EEW) 22
Automatic Text Superimpose
・map of earthquake epicenter
EEW Signals
緊急地震速報 強い揺れに警戒
Chimes Sound and Map
(Server) (Map Renderer)
(Master Control)
Japan Meteorological Agency
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Emergency Information Provided by NOTTV 23
Earthquake Information
After the earthquake, its hypocenter, magnitude, and observed seismic intensity are reported
Wheather Alert
震度4以上が観測された地域は次のとおりです。 神奈川県 横浜市 相模原 川崎市
Tsunami Alert
JMA issues Tsunami Warning/Advisory, containing estimated tsunami heights and arrival
If hazardous weather conditions are expected, JMA delivers warning/advisory, including storm, snow-storm, heavy rain, heavy snow, storm surge, etc.
2013 1Q 2Q 3Q 4Q
# of Earthquake info broadcasted
0 50 42 45
2013 1Q 2Q 3Q 4Q
# of Tsunami Alert broadcasted
4 0 0 0
2013 1Q 2Q 3Q 4Q
# of Whether Alert broadcasted
9 199 1,169 157
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Number of NOTTV Subscribers 24
● Achieved 1.5 million subscribers on September 1st, 2013 (17 months after service launce)
● 39 models of smart phones/tablets released as of January, 2014
0
100
200
300
400
500
600
700
800
900
1,000
1,100
1,200
1,300
1,400
1,500
1,600
1,700
2012.4 5 6 7 8 9 10 11 12 2013.1 2 3 4 5 6 7 8 9 10 11 12
# of…
2 models at service
launch
N-06D
SH-06D
5 models for Summer
N-07D T-02D SH-10D
L-06D P-08D
SH-06D NERV L-06D JOJO
3 models for Autumn
HW-01E L-01E
SC-01E
7 models for Winter
N-03E F-03E F-04E N-02E
L-02E SH-02E F-05E
6 models for Spring
(thousand)
Service Launch
April 1st
100,000 on July 28th
N-02E ONE PIECE
500,000 on January 6th
P-02E F-02E N-04E
L-04E HW-03E SO-03E
10 models for Summer
SC-04E S0-04E F-06E SH-06E SH-07E
L-05E P-03E N-06E F-07E SH-08E
1,000,000 on June 1st
Xperia feat. HATSUNE MIKU SO-04E
1,500,000 on September 1st
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The latest docomo 2013-2014 Winter-Spring Handsets 25
AQUOS PHONE ZETA SH-01F
ARROWS NX F-01F
ARROWS Tab F-02F GALAXY J SC-02F
GALAXY Note 3 SC-01F
SH-01F DRAGON QUEST
XperiaTM Z1 SO-01F
© ARMOR PROJECT/BIRD STUDIO/SQUARE ENIX All Rights Reserved. © 2004, 2013 ARMOR PROJECT/BIRD STUDIO/SQUARE ENIX All Rights Reserved.
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Summary (ISDB-Tmm in Japan) 26
Lessons that we learned / Conclusion
ISDB-Tmm based mobile multimedia broadcasting was launched on
April, 2012, using the VHF spectrum after analog TV shutoff.
- # of subscribers (400yen/month) reached 1.5 million
- 8.8 million+ smartphones/tablets in 39 models shipped
ISDB-Tmm provides high quality media coding, advanced use of meta-
data, high efficiency file delivery protocol, advanced content protection,
etc. on top of ISDB-T, supporting:
- Conventional real-time broadcasting
- File-based broadcasting
78%+ house hold covered with 61 transmitters, and targeting 90%+ until
the end of fiscal year 2014.
Key success factors:
- Corroboration among Broadcasters (contents), Mobile network
operator (services), Manufacturers (handsets)
- new program/service format utilizing communications functionality
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Thank you for your attention.
27
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(Sup.) ISDB-Tmm Standard Documents 28
• ITU-R BT-1833: “Broadcasting of multimedia and data applications for mobile reception by handheld receivers”
• ITU-R BT-2016: “Error-correction, data framing, modulation and emission methods for terrestrial multimedia broadcasting for mobile reception using handheld receivers in VHF/UHF bands”
• ARIB STD-B10: “Service Information for Digital Broadcasting System” – English version with ISDB-Tmm update not yet available
• ARIB STD-B25 Part 4: “Conditional Access System Specifications for Digital Broadcasting” – English version with ISDB-Tmm update not yet available
• ARIB STD-B32: “Video Coding, Audio Coding and Multiplexing Specifications for Digital Broadcasting” – English version with ISDB-Tmm update not yet available
• ARIB STD-B38: “Coding, Transmission and Storage Control for Server Type Broadcasting” – English version to be available
• ARIB STD-B45 Part 2: “Contents Download for Digital Broadcasting System” – English version to be available
• ARIB STD-B46: “Transmission System Based on Connecting Segments for Terrestrial Mobile Multimedia Broadcasting”
• ARIB STD-B53: “Receiver for Multimedia Broadcasting”
• ARIB TR-B33: “Operational Guidelines for Terrestrial Mobile Multimedia Broadcasting by Transmission System Based on Connected Segments” – English version partly available as “http://www.isdb-t.jp/doc/ISDB-Tmm_TR_volume0.0_0.75ver.pdf”