Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All ARIB Standardization Activities on Multimedia Broadcasting for Mobile Terminals Tomoyuki Ohya ARIB

Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

ARIB Standardization Activities on ARIB Standardization Activities on Multimedia Broadcasting for Multimedia Broadcasting for

Mobile TerminalsMobile Terminals

Tomoyuki OhyaTomoyuki Ohya

ARIB (mmbi, Inc.)ARIB (mmbi, Inc.)

Document No:

GSC16-GRSC9-03

Source: ARIB

Contact: Tomoyuki Ohya (mmbi, Inc.) [email protected]

GSC Session:

GRSC9

Agenda Item:

4.3


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2

Highlight of Current Activities(1)Highlight of Current Activities(1)• Digital TV Switchover in Japan

– Analog terrestrial TV broadcasting terminated on 24th July, 2011, except for three North-Eastern prefectures (to be terminated by 31st March, 2012)

– Using the vacant VHF spectrum, ISDB-T based multimedia broadcasting for mobile terminals will be launched:

• VHF-L (90-108MHz): Local Block are (ISDB-Tsb: ARIB STD-B29)• VHF-H (207.5-222MHz): Nationwide area (ISDB-Tmm)

• Standards Completed– “Mobile Multimedia Broadcasting System WG” in ARIB has been

working on establishing related standards since November, 2009

– Nine ARIB STDs (B10, B25 Part4, B32, B38, B45 Part 2, B46, B53) are either newly created or modified to support ISDB-Tmm (published in March 2011)


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3

Highlight of Current Activities(2)Highlight of Current Activities(2)• Operational Guidelines Completed

– ARIB TR-B33: “Operational Guidelines for Terrestrial Mobile Multimedia Broadcasting by Transmission System Based on Connected Segments” was published in March, 2011

– The operational guidelines document is maintained by “ISDB-T Multimedia Forum”

• Harmonization with ITU-R standardization– ISDB-T based multimedia broadcasting is standardized in ITU-R

BT-1833: “Broadcasting of multimedia and data applications for mobile reception by handheld receivers”, as Multimedia System “F”

– File based broadcasting defined in ARIB STD-B45 Part 2 is also standardized as ITU-R BT-1888: “Basic elements of file-based broadcasting systems ”


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Strategic DirectionStrategic Direction

• Commercial Service in Japan– ISDB-T based VHF-H multimedia broadcasting

(Mobacas) to be launched in April, 2012

• Activities towards the global harmonization– Physical layer parameters for 6/7/8 MHz bandwidth

were already defined in ARIB STD-B46 and ITU-R BT.1306

– New recommendations on the emission system and the planning criteria for terrestrial multimedia broadcasting for mobile reception using handheld receivers in the VHF/UHF band are under discussion in ITU-R (BT.[ETMM] and BT.[ETMMPLAN])


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ChallengesChallenges• Coexistence / Competition with other visual contents

services such as:– One-seg services

– On-demand video services over communications channels

• Key success factors for mobile DTV– Providing open technical information to the industry for rapid

terminal penetration

– Preparation for wide radio coverage area

– Collaboration of communications and broadcasting services• Reliable reception of high quality programs is possible using

communications channels to supplement data which cannot be received over broadcasting channels

• New broadcasting programs collaborating with bi-directional services, such as social networking services


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Next Steps / ActionsNext Steps / Actions

• Continue to contribute to establishing / improving standard documents in ARIB and ITU-R

• Expecting commercial service launch in April, 2012


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Supplementary SlidesSupplementary Slides


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Storage type Services (File Download)

Storage type Services (File Download)

Live Concerts

Live News

Sports game

Movie/Drama

NewspapersAudio file

Novels

E-Magazine

Real time Services (Streaming)Real time Services (Streaming)

Enjoy live programs such as sports, news, and music.

Enjoy live programs such as sports, news, and music.

Various typesof contents

Various typesof contents

■ Viewers can watch live videos just like conventional mobile television in much better quality.

■ Various types of contents can be automatically downloaded into storage on mobile handsets.

Automatically stored to your mobile handsetsAutomatically stored to your mobile handsets

Can be used anytimeanywhere

Can be used anytimeanywhere

ISDB-Tmm system seamlessly provides both Storage type (download) services and Real time (streaming) services in a single allocated bandwidth.

ISDB-Tmm ServicesISDB-Tmm Services

8


GSC16-GRSC9-03Technical specifications of ISDB-TmmTechnical specifications of ISDB-Tmm

ISDB-Tmm (Ref.) ISDB-T(Digital Terrestrial TV, Oneseg)

Spectrum Usage

Bandwidth / segment (Bws)

6000 / 14 = 428.57 kHz, 7000/14 = 500 kHz, 8000/14 = 571.428 kHz

Number 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

13-seg formatISDB-T

ARIB STD-B31 / ITU-R BT1833

1-seg formatISDB-TSB

ARIB STD-B29 / ITU-R BT1833

Any combination of 13-seg/1-seg format

6/7/8MHz (13 segments)

Oneseg Partial Recepti

onHDTV

e.g. 2-layer Hierarchical Reception (including partial reception)

†6MHz bandwidth is specified in ARIB STD-B31

† † 6/7/8MHz bandwidth is specified in ITU-R BT-1306

†6MHz bandwidth is specified in ARIB STD-B31/B29

† † 6/7/8MHz bandwidth is specified in ITU-R BT-1306

6/7/8MHz

Partial Recepti

on

9


GSC16-GRSC9-03Technical specifications of ISDB-Tmm (cont.)Technical specifications of ISDB-Tmm (cont.)

ISDB-Tmm (Ref.) ISDB-T(Digital Terrestrial TV, Oneseg)

Active symbol duration

6MHz , 7MHz, 8MHz252 μs, 216 μs, 189μs (Mode 1)504 μs, 432 μs, 378μs (Mode 2)

1008 μs, 864 μs, 756μs (Mode 3)

Carrier spacing (Cs) 6MHz , 7MHz, 8MHzBws/108 = 3.968kHz, 4.629kHz, 5.271kHz (Mode 1)Bws/216 = 1.984kHz, 2.361kHz, 2.645kHz (Mode 2)Bws/432 = 0.992kHz, 1.157kHz, 1.322kHz (Mode 3)

Guard interval duration

1/4, 1/8, 1/16, 1/32 of active symbol duration63, 31.5, 15.75, 7.875 μs (Mode 1: 6MHz)126, 63, 31.5, 15.75 μs (Mode 2: 6MHz)252, 126, 63, 31.5 μs (Mode 3: 6MHz)

Transmission frame duration

204 OFDM symbols

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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GSC16-GRSC9-03Licensed Spectrum for Multimedia Broadcasting in JapanLicensed Spectrum for Multimedia Broadcasting in Japan

After reallocation of the licensed spectrum for analog terrestrial TV , 207.5-222MHz band (14.5MHz) will allocate for mobile multimedia broadcasting.

1 segment type: 7 slots total

Total:33 segments

13 segments Type13 segments Type

Before Reallocation( ～ 2012.7)

After Reallocation(2012.7 ～ )

Analog TV１～ 3ch

Analog TV４～ 12ch

90MHz 108MHz 170MHz222MHz

Multimedia Broadcasting (V-Low)

90MHz 108MHz 170MHz 222MHz207.5MHz

Public Safety and Homeland Security Band

Nation wide Multimedia Broadcasting (V-High)

202.5MHz

Gu

ard

b

an

d

　　 Reallocation of Licensed Spectrum　　 Reallocation of Licensed Spectrum

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GSC16-GRSC9-03Multimedia Broadcasting System ModelMultimedia Broadcasting System Model

Programming/Contents

Management System

Content Complement Server Broadcast System

Communication System

Meta-data System

CAS/DRM System

File Delivery System

Streaming Playout System

Multiplexer

Broadcast Network

Communication Network

-Contents

-License/Key Information-Contents Complement

Contents Export

12

ISDB-Tmm

3G/LTE


GSC16-GRSC9-03ISDB-Tmm Protocol StackISDB-Tmm Protocol Stack

Contents for realtime service PSI/SI Contents for

file download service ECG/EPG metadata

PES Section

FLUTE / AL - FEC

UDP / IP / ROHC

ULE

MPEG -2 TS

ISDB- Tmm physical layer

Real-time service File download service

SI: Service informationPSI: Program specific information

EPG: Electronic program guideECG: Electronic contents guidePES: Packetized elementary streamFLUTE: File delivery over unidirectional transport

AL- FEC: Application layer – forward error correction

UDP: User datagram protocolIP: Internet protocolROHC: Robust header compressionULE: Unidirectional lightweight encapsulation

TS: Transport stream

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ISDB-TmmISDB-Tmm Technical FeaturesTechnical Features

(1) High Quality Media Coding•ITU-T H.264 / MPEG-4 AVC•MPEG HE-AAC, MPEG Surround

(2) Advanced Inter-media Interaction•Interaction between communications and broadcasting

(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 Power Saving Mechanism•Partial segment reception is supported•Intermittent reception for file download is supported by using advanced meta-data

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Real Time Services (Streaming)

Real Time Services (Streaming): Advanced Profile/Level Support. Higher resolution video.Storage Type Services (Download): Support of High-Definition video.

Codec Profile Level Resolution 　 Frame Rate

： ITU-T H.264/MPEG-4 AVC： Main： 3： 720×480(VGA+)： 30 frame/sec

High Quality Media Coding (Visual)High Quality Media Coding (Visual)

Ref.: One Seg (TR-B14)

Codec ： ITU-T H.264

Profile ： Baseline

Level ： 1.2

Resolution ： 320x240 (QVGA)

Frame Rate ： 15 frame/sec

Storage Type Services (Download)

： ITU-T H.264/MPEG-4 AVC： High： 4.2： 1920×1080(1080HD)： 60 frame/sec

Codec Profile Level Resolution 　 Frame Rate

15

QVGA

VGA+


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ISDB － Tmm Real Time Services (Streaming)

•High efficiency stereo audio broadcasting by using HE-AACv2•Home theater like multi channel audio support by MPEG Surround

Codec Audio Channel

： MPEG HE-AACv2 Surround： Monaural / Stereo / 5.1ch

Stereo Monaural

Surround

High Quality Media Coding (Audio)High Quality Media Coding (Audio)

Ref.: One Seg (TR-B14)

Codec ： AAC+SBR (eq. HE-AAC v1)

Audio Channel ： 2 (maximum)

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GSC16-GRSC9-03Advanced Meta-data UsageAdvanced Meta-data Usage

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• ISDB-Tmm introduces advanced meta-data for both realtime broadcasting (EPG: Electric Program Guide) and storage type broadcasting (ECG: Electric Contents Guide)

• Rich program description is possible by the advanced meta-data

• Flexible charging mechanism is provided by meta-data licensing information, such as:

- Group pricing (for series of contents)- Discount coupon (for promotion)- Rich description of the content license is included in the meta-data

• Meta-data is transmit efficiently by AL-FEC protection


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• Support of flexible inter media interaction among Web/E-mail/Real Time Services(Streaming)/Storage Type Services(Download)

Web Browser

E-Mail

Streaming

Download

Advanced Inter-media InteractionAdvanced Inter-media Interaction

media: DTVTR-X.jp?p_channel=0001 &service_id=0001 &stime=2005-04-1T10:00:00 &title=%82%C4%B7%82%C6 &provider_name=%8B%9F%8B %8B%8E%D2%96%BC

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0 100 200 300 400 500 6000

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

10 20 30 40 50 60

Packet Error Rate (%)

Rec

eive

Suc

cess

Rat

e

AL-FEC

・ 10 MByte File Transmission・ 1,000 byte/packet・ FEC rate = 1/2 (AL-FEC)・ Repetition=2 (Carousel)

•High efficiency file broadcasting protocol with application layer forward error correction (AL-FEC)

High Efficiency File Delivery ProtocolHigh Efficiency File Delivery Protocol

ISDB-Tmm

AL-FECDSM-CC Carousel

A

A

A

A-1

A-2

A-3

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GSC16-GRSC9-03File Delivery ProceduresFile Delivery Procedures

2020

15

・・・

・・・ FEC Packet

・・・

・・・

・・・

・・・

UDP/IP Header

CRC32ULE Header

・・・

TS Header

188 Byte

Contents(Arbitrary Length)

File Segmentation

FEC Packet Generation

LCT Header, FEC Payload ID

FLUTE(File Delivery Protocol)

UDP/IP

ROHC(Header Compression)

ULE(Encapsulation)

IP over MPEG-2(TS Packet)


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• When the content delivered over the broadcast channel is incomplete, the missing data can be compensate using communications channel.

• The terminal issues HTTP request, which is commonly used in communications network and has higher flexibilities.

• Complementation schedule is either:- At the time user uses the content (manual compensation) or- Controlled by meta-data associated with the content (automatic

compensation)

・・・・・・・・・・・・

Data Complementation Request

Complementary Data・・・・・・・・・・・・

Data Broadcast

Receive & Store

Complementation

Broadcast

Communications

Communications

Missing Data

・・・・・・・・・・・・・・

・・・・・・・・・・・・・・

Content Complementation by Communications Content Complementation by Communications ChannelChannel

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13 segment1 segment

Frequency Frequency

time

•Large amount of data: High-speed immediate receiving with full segment receiver

•Small amount of data: Narrow-band low power consumption with one segment receiver

time

Contents AContents BContents CContents DContents EContents F

•Minimum wake-up scheduling for power saving with transmission control metadata

EPG/ECG Meta-data (Program) Transmission Control Meta-data

•Detailed control data for file retrieval, such as, broadcasting schedule, number of repetition, etc.

time

Contents (1st transmission)Wake-up

Sleep

Contents (2nd transmission) If missing 1st transmission

Receiver Wakeup Scheduling

Advanced Power SavingAdvanced Power Saving

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GSC16-GRSC9-03Contents RecommendationContents Recommendation

Recommend Engine

User Attributes

(1) Contents usage information

(3) Receiving Recommend Information (list of contents IDs)

(4) Storage of recommended contents, or highlighted display of recommended contents on ECG

Recommend Server

(2) Recommend Information Generation

• Contents recommendation is a key technology for users to efficiently navigate through large number of contents

• Recommendation information is provided through communications channel

• User terminals automatically schedule download on broadcast channel

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△Call for Proposal

2006 2007 2008 2009 2010 2011 2012

△Sin

△License Granted for System Operator(ISDB-Tmm was adapted)Informal Gathering

for Discussion on Multimedia Broadcasting

△MIC Committee Report

△Call for System Proposal

△Technical Requirements(MediaFLO andISDB-Tmm)

Broadcasting System Committee

△Analog TV Shutdown

Time-table of ISDB-TmmTime-table of ISDB-Tmm Technical SpecificationsTechnical Specifications

△Multimedia

Broadcasting Working Group

ARIB

Ministry of Internal Affairs and

Communications

△STD, TR

ISDB-T Multimedia Forum △Release

Technical ReportWorking Group

Today

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ISDB-T Multimedia Forum is an organization dedicated to researching new broadcasting services that utilize the ISDB-T format, in order to contribute to the advancement of digital broadcasting in Japan. The forum also promotes the benefits of mobile multimedia broadcasting, which will continue to use the available VHF frequency band after analog broadcasting has ended.

Steering Board Members

ISDB-TISDB-T Multimedia ForumMultimedia Forum

Fuji Television Network, Inc., NIPPON TELEVISION NETWORK CORPORATION, TOKYO BROADCASTING SYSTEM HOLDINGS, INC., ITOCHU Corporation, Sumitomo Corporation, SKY Perfect JSAT Corporation, Multimedia Broadcasting, INC, DENTSU INC., TV Asahi Corporation

91 members as of 31 January 2011

Steering Board

Content Broadcasting Committee

Broadcasting Infrastructure

Committee

Operational Guidelines WG

Core Council

• Drafting operational guidelines document

• Information exchange on broadcasting infrastructure

• Discussions on other issues related to broadcasting infrastructure

• Discussions on preparation for content broadcasting business

• Information exchange among potential content broadcasters

• Discussions on other issues related to content broadcasting business

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GSC16-GRSC9-03Operational Guidelines for ISDB-TmmOperational Guidelines for ISDB-Tmm

Volume

Title Summary

0 Multimedia Broadcasting Operational Guidelines

Explanation for multimedia broadcasting services and technical outlines.

1 Provisions for Download operations Guideline for update receiver software through broadcasting signal (SDTT)

2 Function Specifications for Receiver Units

Description for the functionalities of the receivers.

3 Provisions for Multimedia Coding Multimedia coding guideline for data broadcasting, subtitles, letter on screen and file casting.

4 Provisions for PSI/SI Operations Necessary PSI for receiver station tuning and guideline for SI to get program information

5 Provisions for Conditional Access System(CAS) Operations and Specifications on Receiver Units

Live streaming service: Conditional receiveFile casting service: Conditional playback

6 Not used -

7 Provisions for Carrier Operations Guideline for encoding Video and Audio and Multiplexing for transmission

8 Provisions for Contents Protection Guideline for contents protection (receiver inside protect and signal output protect)

9 Not used -

10 Provisions for Meta Data Operations Guideline for EPG/ECG meta data that receiver display program table

11 Provisions for Storage Type Service Operations

Guideline for data transport of file downloading.

12 Provisions for Storage Contents Supplementation Operations

Guide for a compensation of storage contents via communications channel.

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• ITU-R BT-1306: “Error correction, data framing, modulation and emission methods for digital terrestrial television broadcasting”

• ITU-R BT-1833: “Broadcasting of multimedia and data applications for mobile reception by handheld receivers”

• ITU-R BT-1888: “Basic elements of file-based broadcasting systems”

• ARIB STD-B10: “Service Information for Digital Broadcasting System”• ARIB STD-B25 Part 4: “Conditional Access System Specifications for Digital

Broadcasting”• ARIB STD-B32: “Video Coding, Audio Coding and Multiplexing Specifications for Digital

Broadcasting”• ARIB STD-B38: “Coding, Transmission and Storage Control for Server Type

Broadcasting”• ARIB STD-B45 Part 2: “Contents Download for Digital Broadcasting System”• 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”

Related StandardsRelated Standards

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Documents

Halifax, 31 Oct – 3 Nov 2011ICT Accessibility For All ARIB Standardization Activities on Multimedia Broadcasting for Mobile Terminals Tomoyuki Ohya ARIB