Towards a comprehensive disaster relief ICT system

EWBS
Emergency Warning Broadcast System
Emergency information at anytime, anywhere, for anybody
4th July, 2022
EWARNICA Annual Meeting
San José, Costa Rica
Yasuji SAKAGUCHIJapan Telecommunications Engineering and Consulting ServiceJapanese Digital TV standard adopted by 20 countries

Japan
Honduras
GuatemalaPhilippines

Nicaragua

El Salvador

Venezuela

Costa Rica

AngolaEcuador

Sri Lanka

PeruMaldives

Bolivia

BotswanaParaguay
Chile■DVB-T/T2 adopted

UruguayArgentina

As of February 2020 Research by DiBEG■ISDB-T adopted

Brazil■ATSC adopted■DTMB adopted

14 countries in Latin America
Those countries which are facing the risk of natural disasters （Peru, Central American countries etc.)
have strong interest in EWBS introduction with a technical assistance from Japan.

Video (5 minute)
The case of Digital TV EWBS in Latin America

Why Emergency Information on Broadcast radio wave?

1. Wide coverage
2. Robust transmission
3. One way communication
4. Low Latency
5. Resistant mobile reception
6. Low cost, easy introduction

Why Emergency Information on Broadcast radio wave?

1. Wide coverage

Broadcasting is public media accessible to everyone.
Broadcast radio wave reaches every corner of nation in most countries.

Why Emergency Information on Broadcast radio wave?

2. Robust transmission

Devastated landslide by torrential rains hit Izu-Oshima, on 16 Oct. 2013

Telecommunication failed
Electricity failed

Broadcasting transmitting station

Broadcasting kept transmission !
Broadcasting transmission system is designed to be disaster resistant.
Wireless operation, Located in a higher place, Backup by emergency generator….

Why Emergency Information on Broadcast radio wave?

3. One way communication
Traffic Congestion freeResistant to cyber security

Guarantees high reliability

Why Emergency Information on Broadcast radio wave?

6. Low cost, easy introduction

Maximum usage of existing network

Guarantees low cost and easy introduction

Technical Cooperation to Latin American countries
so far for EWBS introductions

1. Development of EWBS devices
2. Support for practical application of EWBS

Development of EWBS devices for Latin American countries
Broadcasting Radio Wave
(Digital TV)

Display EWBS

EWBS STBEWBS Gateway
EWBS Inserter

EWBS
Reception
ModuleØ Emergency information dissemination systemutilizing Broadcasting Radio Wave
Ø Efficient dissemination with maximum use ofexiting infrastructure

Siren♪ “EWBS”
Siren♪ “EWBS”
Siren♪ “EWBS”

EWBS Superimpose Modulen Exclusive reception of EWBS Signal
n 24-hour monitoringn Robust “One-seg” receptionn Small size , Low consumption

EWBS Superimpose Module

Applications of “EWBS Gateway”
Bridge of EWBS to any existing communication systems

Network out

Audio out

Contact out

HDMI out

WiFi
Siren
EWBS

PublicCommunication
SystemEWBS
Gateway

Speaker

Signage
EWBS
EWBS

EWBS
Gateway

EWBS
robustness
wide coveragehigh reliability

CATV

EWBSEWBS

EWBS
Gateway・・・EWBS

EWBS implementation in Latin America with Japan’s cooperation

NicaraguaBrasil3/2018 Field experiment of EWBS equipment
4/2021 Start of test transmission of EEW (Earthquake Early Warning) information
12/2021 Pilot project for EWBS receivers’ expansion
10/2018 Field experiment of EWBS equipment
10/2019 Demonstration of EWBS receivers
4/2021 Start of test transmission of EEW (Earthquake Early Warning) information
10/2018 Field experiment of EWBS equipment
3/2019 Demonstration of EWBS receivers
4/2021 Start of test transmission of EEW (Earthquake Early Warning) information
1/2019 Field experiment of EWBS equipment
3/2019 Start of technical support with operation training
11/2019 Large scale demonstration in national evacuation drill on WorldTsunami Awareness day (Nov. 5,2019 )12/2019 Field experiment of EWBS equipment

Ecuador3/2021 In-door experiment of EWBS equipment

El Salvador

Costa RicaPerúPeruvian disaster management institution ,INDECI began installation of 400-set
EWBS receivers in various strategic institutions located in tsunami flood zones in Peru
https://www.gob.pe/institucion/indeci/noticias/528600-indeci-realiza-entrega-e-instalacion-de-equipos-receptores-del-sistema-de-radiodifusion-de-alertas-de-emergencias

EEW around the globe

EEW Real-time testing stage
in Central America region

Cooperative Project with EWARNICA
Deliver earthquake early warning (EEW) automatically to the residents byconnecting EWARNICA system and EWBSTechnical cooperation between EWARNICA and JTEC
Dissemination

Automatedcommunication
Interface(Newly developed)

EWARNICATVInternet

Speaker

Siren

EWBS

Signage

CATV

Mensaje EWBS
de Alarma deemergencia

EWBS trial disseminating Earthquake (EEW) information (April 2021）
in El Salvador

Broadcasting
Transmitting Station

Canal 10
Earthquake Early
Warning (EEW)

EWBS

Seismic observation agency MARN

20

EWBS Pilot Project in Nicaragua 2021.8 – 2022.1(Japan)MIC ProjectTechnical Corporationof TDT/EWBS

EWBS

Antenna
Measurement equipment
Signage Display 20 units
STB 50 units

EWBS Insertor

Gateway 3 units

States Broadcaster

Canal 6
TechnicalCorporation

Donation of EWBS
reception devices(Japan)JICA Project
Corporationof EWBS receivers’
expansion

Ministry ofCommunications

TELCOR

Joint implementation in Nicaragua
Seismic observation
AgencyDisaster prevention
AgencyINETER

SINAPRED

AutomatedcommunicationInterface(Swiss)
EWARNICA project(Newly developed)

EEW
EWBS receivers’ Installation
into 40 locations in Managua

Next Challenges
Towards a comprehensive disaster relief ICT system

1. CAP aggregation & dissemination
2. Expanded use for Radio broadcasting (FM / MW)“EWBS-CAP Hybrid transmission” utilizing existing broadcasting network
Emergency information at anytime, anywhere, for anybody
FY 2022

FY 2023

R&D study

Development of devices
Demonstration / Implementation(Tentative)(Expected to be adopted ）March 2023

March 2024

Comprehensive disaster relief ICT systemutilizing “EWBS - CAP Hybrid Transmission” (Proposal)① EWBS Dissemination (open use)

EWBS Transmission
by extracted CAPBroadcastingRadio Wave

CAP Transmission（Direct)

for General public ( Household, Public Space ..)CAP/EWBS Multiplex

Public WiFi

EWBS
Reception
Broadcasting

General Receivers
For Household

EWBS
EWBS

Public Display / Speaker

Satellite
VHF
Mobile② CAP Dissemination (closed use)・・・

for Disaster Management Organizations / Equipment

CAP Aggregation

Specific Display
Early Waring Siren system
Emergency Radio etc.

CAP
Reception
・・・・・・

Emergency!!

Classification of Emergency Information delivery on Broadcast radio waves
EWBS for General Public（open use)

Recipient

General household
Public Space (Public hall, shopping mall etc.）

CAP for Specific Recipient(closed use）

Disaster management organizations（Municipalities, fire departments, police, media, etc.）

Purpose

Dissemination
for General public

Aggregation & Dissemination
among related parties

TypeBroadcasting contents／One-way

Data communication ／ Interactive*

Receivers
Information to carry

TV, Radio etc. for Household
Specific Display, Emergency radio
Signage, Speaker etc. for Public space Early Waring Siren system etc.
Minimum Information

CAP-XML(Activation flag / Text message / Area-code)

Technical regulation
for receivers’
manufacturing

General receivers that comply toBroadcasting technological standard(ISDB-T standard)

Dedicated receivers that is freely
manufactured according to an usage(outside of broadcasting standard)

Monitoring Functionof receivers

N/A“Return channel” required

Area coding

Maximum 4096 specified by ISDB-T

Flexible setting by CAP（Subdivision difficult）（Subdivision possible）* Internet connection to be used for upstream communications

Types of EWBS
MethodAudio Analogue
Multiplexing
Digital DataMultiplexing

Capacity<1kbps(64bps)>16kbpsCodeTextTV✔

NANA *1✔

✔

Ø JapanØ Latin America

ApplicationMWFMØ JapanØ Tonga

NA*2InternationalIntroduction
in considerationby using “DARC”*3*1 in Japan, used to be in operation in analogue TV broadcasting*2 MW is technically incompatible to digital data multiplexing*3 in Japan, under operation in ITS communication service (VICS)EWBS introduction with Analogue Radio in Tonga（undergoing in JICA project）
Radio EWBS is used as an“emergency radio communication system”

75 Sirens installed in risk areas

Disaster Management Agency“Early Warning Siren system”
using Radio EWBS
Copyright © 2021 Japan Telecommunications
Engineering and Consulting Service26

Video (1 minute)
The case of Radio EWBS in Tonga

Utilization of FM Data castingØ FM Radio broadcast standard is common throughout the world
Ø Digital data multiplexing system on FM Radio are standardized in ITU-R
European ”RDS” ( Radio Data System) / Japanese “DARC” ( Data Radio Channel).
Ø Japanese DARC has enough capacity and ability to cover “EWBS-CAP
Hybrid transmission” .
Ø In Japan, DARC has long been in service in “VICS” ( Vehicle Information andCommunication System) and widespread.
Ø DARC has promising potential to expand the case of Latin America to
Asia-Pacific countries by utilizing the exiting FM Radio wave.

Digital data multiplexing system on FM Radio
Bandwidth assigned for FM Radio Broadcasting( The only one ITU standard)

FM Radio Program
to be used for EWBS
L+R

L-R
Digital Data
1938

Frequency (kHz)100

Digital data multiplexing system on FM Radio
RDS

DARC

(Radio Data System)(Data Radio Channel)

Development

EuropeJapanStandardization

1986(ITU-R Rec. 643)

1995
(ITU-R Rec.1194)

Modulation

DBPSK

LMSK

Sub-Carrier

57 kHz76 kHzData Capacity

1 kbps

16 kbpsSufficient capacity
for the EWBS-CAP Hybrid transmission

DARC in operation in Japan
VICS (Vehicle Information and Communication System)
https://www.vics.or.jp/en/
VICS is an innovative information and communication
system, enables you to receive real-time road traffic
information about congestion and regulation.

Information is provided through three communication and broadcast media

Text information delivery is compatible to EWBS

Thank you !
Gracias!
sakaguchi @ jtec.or.jp
https://www.jtec.or.jp/english/activities/ewbs.html

Japan Telecommunications Engineering and Consulting Service