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

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

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.

Table of Contents 3

(1) ISDB-Tmm Technologies

(2) ISDB-Tmm Broadcasting Network

(3) NOTTV Broadcasting Services

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

ISDB-Tmm Protocol Stack 5

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

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

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

9

ISDB-Tmm Broadcasting Network

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

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

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

Tx for Tokyo Sky Tree

Tx （25kW） Cooler

Tx monitors

RF Switch Filter Dummy load

13

Display Only

Display Only Display Only

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

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)

16

Service Aspect of NOTTV

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

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]

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)

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

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”

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

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

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

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.

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

Thank you for your attention.

27

(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”