Disaster and ICT Systems in Japan
December 2012
Michiko Fukahori
Ministry of Internal Affairs and Communications
Japan
Contents
Ⅰ. Disaster countermeasures and Great East Japan
disaster
Ⅱ. ICT systems which was effective in disaster situation
Ⅱ-1. Disaster Warning System
Ⅱ-2. Communications System
Ⅱ-3. Information Sharing
TV
Mobile TV
Radio
Data Broadcasting
Internet
Ⅱ-4. Research and Development - for the future
1
Ⅰ. Disaster countermeasures and
Great East Japan disaster
2
Outline of the Disaster Management System
[National Level]
Prime Minster
|
Central Disaster Management Council
|
Designated Government Organizations
Designated Public Corporations
Formulation and promoting implementation of the Basic
Disaster Management Plans
[Prefectural Level]
Governor
|
Prefectural Disaster Management Council
Designated Local Government Organizations
Designated Local Public Corporations
Formulation and promoting implementation of Local Disaster
Management Plans
[Municipal Level]
Mayors of Cities, Towns and Villages
|
Municipal Disaster Management Council
Formulation and promoting implementation of the Basic
Disaster Operation Plans
Formulation and promoting implementation of Local Disaster
Management Plans
[Residents level]
Designated Government Organizations
24 ministries and agencies
Designated Public Corporations
56 organizations including independent administrative agencies, Bank of Japan and gas companies and NTT
Source: Cabinet Office, Disaster Management in Japan, p.8
3
Organization of National Government
Central Disaster Management Council President
Prime Minister
Ministers
Chief Cabinet Secretary
Minister of State for
Disaster Management
Cabinet Secretariat in
charge of security and
risk management
Ministries related to
disaster management
Disaster management,
Cabinet Office
Interact with each other
Source: Cabinet Office, Disaster Management in Japan, p.9
4
Structure of Basic Disaster Management Plan
Natural Disasters
Earthquake Disaster
Countermeasures
Storm and Flood
Countermeasures
Volcano Disaster
Countermeasures
Snow Disaster
Countermeasures
Maritime Disaster
Countermeasures
Aviation Disaster
Countermeasures
Railroad Disaster
Countermeasures
Road Disaster
Countermeasures
Nuclear Disaster
Countermeasures
Hazardous Materials Disaster
Countermeasures
Large-scale Fire
Disaster Countermeasures
Forest Fire Disaster
Countermeasures
Accident Disaster
(Addressing all the disaster phases)
Disaster Prevention and
Preparedness
Disaster Emergency
Response
Disaster Recovery and
Rehabilitation
(Tangible countermeasures to be taken by each stakeholder)
National Government
Local Governments
Source: Cabinet Office, Disaster Management in Japan, p.11
Residents
5
The number of victims (deaths and missing)
of disasters
Storm and Floods
Snowfall
Earthquake, Volcano
and Tsunami
Source: Cabinet Office, Disaster Management in Japan, p.2
6
Earthquake in the vicinity of Japan
Date
Earthquakes or Hypocenters
①
1982.3.21
Uraga-oki Earthquake
②
1993.1.15
Kushiro-oki Earthquake
③
1994.10.4
Hkkaido-Toho-oki Earthquake
④
1994.12.28
Sanriku-Haruka-oki Earthquake
⑤
1995.1.17
Great Hanshin-Awaji Earthquake
⑥
1997.5.13
Satsuma region in Kagoshima Prefecture
⑦
1998.9.3
Northern region in Iwate Prefecture
⑧
2000.7.1
Niijima and Kozushima Earthquake
⑨
2000.10.6
Western Tottori Earthquake
⑩
2001.3.24
Geiyo Earthquake
⑪
2003.5.26
Miyagi-ken-oki Earthquake
⑫
2003.7.26
Northern Miyagi Earthquake
⑬
2003.9.26
Tokachi-oki Earthquake
⑭
2004.10.23
Niigata-ken-Chuetsu Earthquake
⑮
2005.3.20
Fukuoka-ken-Seihou-oki Earthquake
⑯
2005.8.16
Miyagi-ken-oki Earthquake
⑰
2007.3.25
Noto-hanto Earthquake, 2007
⑱
2007.7.16
Niigata-Chuetsu-oki Earthquake, 2007
⑲
2008.6.14
Iwate-Miyagi Inland Earthquake, 2008
⑳
2008.7.14
Northern coastal area of Iwate Prefecture
㉑
2009.8.11
Suruga Bay
③
Legend
○: Earthquakes with seismic intensity of 6 or
greater
～: Active faults
②
①
⑬
④
⑦⑳
⑲
⑪
⑫ ⑯
⑰ ⑱⑭
⑮
⑨ ⑤
⑩
㉑
⑧
⑥
Source: Cabinet Office, Disaster Management in Japan, p.24
7
The Great East Japan Earthquake & Tsunami
- Date and Time: 11 March 2011 (FRI) 14:46 JST (05:46 UTC)
- Magnitude:
9.0 (the largest magnitude recorded in Japan’s history)
- Epicenter:
N38.1, E142.9 (130km ESE off Oshika Peninsula) Depth 24km
Miyako (Iwate)
Run-up height:38m*
JMA Seismic Intensity
Sendai
Otsuchi (Iwate)
Run-up height:17m*
Tokyo
Epicenter
Fukushima nuclear power station
(Japan Meteorological Agency)
Kesennuma (Miyagi)
Run-up height: 20m*
* The 2011 Tohoku Earthquake Tsunami Joint Survey Group (http://www.coastal.jp/)
8
The 3.11 Disaster
Miyako City,
Iwate Prefecture
9
Summary of Damages
Great East Japan
Earthquake (2011.3.11)
Great Hanshin
Earthquake (1995.1.17)
Magnitude
9.0
7.3
Dead
15,835
6,434
Missing
3,669
3
Damaged
Houses
903,220
639,686
Damaged
Fishing Boats
> 22,000
40
Damaged
Fishing Ports
> 300
17
Damaged
Farmland
23,600ha
214ha
*1 As of November 7, 2011 (source: National Police Agency)
*2 As of November 24, 2011 (source: MAFF)
10
Damage to Fixed Lines, Mobile Base Stations
Mobile Communications
Fixed-line Communications
■ In total, around 1.9 million communication
lines were damaged.
■ In total, about 29,000 base stations were
damaged.
Max. no. of damaged base stations
Max. no. of damaged lines
15000
～
～
[Unit:
10,000
Lines]
fixed-line
phones
FTTH
fixed-line FTTH
phones ＋ADSL
fixed-line
phones
[base
stations
]
11
Emergence of Network Congestion
Fixed-line Communications
■ Carriers restricted phone traffic by as much as 80
to 90 percent.*
* There was 4 to 9 times the normal volume of traffic (NTT East.)
Max. outgoing traffic restrictions
Mobile Communications
■ Carriers restricted voice traffic by as much as 70 to 95
percent.*
■ Packet traffic, however, was either not restricted or
restricted at a lower rate (0 to 30 percent) than voice traffic.
* There was 50 to 60 times the normal volume of traffic (DoCoMo).
eMobile was not subject to restrictions.
Max. outgoing traffic restrictions
voice packet voice packet voice packet
12
Locations of Damage to Mobile Networks
Base stations
collapsed or backup
batteries ran out
NTT central office
(housing building)
NTT central office,
customer building, etc.
(relay building)
Backup generators
ran out of fuel
because of long
power outages
Transmission line
relay station
Area A
Base
station
Communication cable
RNC
Trunk
exchange
Cables cut off or
duct destroyed
Area B
13
Revision to Technical Standards on Measures
for Countering Congestion and for Ensuring Important Communications
●Network design capacity and communications quality reporting, etc.
•
•
•
Reporting to MIC of basic policy for network capacity and measures for usage restrictions and preferential
treatment of important communications.
Regular actual measurement and reporting to MIC of communications quality (connection quality, etc.).
Disclosure in appropriate form of information helpful to users on basic policy for network capacity and on
measures for usage restrictions.
●Analysis of communications status during usage restrictions
•
Preservation and analysis of data on status of important communications and general communications during
usage restrictions in the event of disaster, and continuing review of network design capacity and implementation
rules for usage restrictions etc. and reporting thereof to MIC.
●Disclosure of congestion status
•
•
Immediate disclosure of status of congestion and usage restriction in the event congestion occurs.
Announcements and appeals to avoid making inessential and non-urgent calls and to keep call time as short as
possible, and to use communication methods other than voice calls, including emergency message services.
Extending the list of target institutions
for emergency priority calls
Introducing call length limits
Careful consideration based on a review of network design capacity
Issue for future study
Introducing phone calls with reduced sound quality
Issue for future study
14
Thanks for assistance from all over the world
Offers from 163 countries and regions, and 43 international organizations
Condolences expressed by more than 180 countries and regions,
and more than 60 international organizations
As of October 17,2011, survey by Ministry of Foreign Affairs Japan
Ⅱ. ICT systems
which was effective in disaster situation
Ⅱ-1. Disaster Warning System
Ⅱ-2. Communications System
Ⅱ-3. Information Sharing
Ⅱ-4. Research and Development
- for the future
16
Ⅱ-1. Disaster Warning Systems
17
Earthquake Early Warning System
Main-wave
P-wave
S-wave
Disaster management
Organizations
Immediate action against disasters
Ensure Safety of residents
Public Institutions
(hospitals, schools, etc. )
Ensure evacuation and safety
Use to reduce
damage
Residents
Fire prevention, evacuation
Japan
Meteorological
Agency
Dissemination
Transportation, elevators, etc.
Emergency stop for safety
Earthquake Early Warning
Companies/Factories
Source: Cabinet Office, Disaster Management in Japan, p.13
Protection of workers and facilities
against disasters
Backup of important data
18
Early Warning Systems
Loud Speaker
National Government
Roof-top Installation type
Ministries and Agencies
Japan
Meteorological Related to Disaster Management
Agency
Local Governments
TV & Radio
Early Evacuation
Loud Speaker
On-street Installation type
Indoor receivers
Source: Cabinet Office, Disaster Management in Japan, p.14
Public-relations vehicles
(Official Vehicles)
19
Information flow on Earthquake and Tsunami
Seismic data
Gathering System
4,200 sites around Japan.
Japan
Meteorological
Agency
EPOS
(Earthquake
Phenomena
Observation
System)
20
Monitoring earthquake activities
Seismic data Gathering System
4200 sites around Japan.
The earthquake monitoring system collates seismic
data coming from seismographs installed in 4200
locations throughout Japan.
21
Gathering and analyzing information on earthquake and tsunami
EPOS
（Earthquake Phenomena Observation System）
・Analyzes the seismic data for Earthquake and Tsunami.
・Announces Earthquake Warning alarm starting right after from
detection of the earthquake.
22
Delivering Information on Earthquake and Tsunami
Japan
Meteorological
Agency
Fire and Disaster
Management Agency
Administrative Organ
Local Government
Telecom Carriers
Media
EPOS
(Earthquake Phenomena
Observation System)
Lifeline carriers
Transportation facilities
Japan Coast Guard
Earthquake or tsunami warnings are instantly
delivered to central & local governments,
Ministry for Land,
broadcasters, telecom carriers.
infrastructure,
After receiving this warning, local government Transport and Tourism (MLIT)
deliver alarm through their sirens or
microphones.
WEB
C
I
T
I
Z
E
N
23
Early Warning to Mobile Phones
Detection of
earthquake
Japan Meteorological
Agency
Earthquake Early Warning
Process message
delivery
Mail Center
Disaster/ Evacuation information
From state/ local governments
- No monthly fee or telecommunication fee is charged
24
Early Warning through Broadcasting System
Japan
Meteorological
Agency (JMA)
Broadcasting
Station
EEW
Alert information in Program only
EWBS
EEW: Earthquake Early Warning
EWBS: Emergency Warning Broadcasting System
Alert information with
“Switch-on” signal of receivers
Automatic activation !!
Mobile television – Example 1 One-seg Mobile TV Saved Many Lives during the 3.11 Disaster
A huge earthquake struck on March 11 in the north-east area of Japan. Right after the end of the violent
shakes caused by the earthquake, Mr. Takahashi, Senior Managing Director of TOYO KNIFE, an
industrial cutlery company located in Miyagino district, Sendai City, immediately turned on the oneseg TV function on his mobile phone in his office, to which the power supply was cut off.
He got an emergency warning alarm for a tsunami on his one-seg TV (mobile phone). Regrettably his
office was located very near the port (about 500m from Sendai-Shiogama Port), so he and other staff
did not have much time to evacuate, but 100 people managed to rush to a shelter on a hill.
By the time they arrived at the shelter (Tagajyo Public Cultural Center) at 3:30 pm, the TOYO KNIFE
office and factory had been completely destroyed by the long-lasting, huge tsunami.
Mr. Takahashi said “ We couldn’t watch TV because of the power cut, but we could get information on
the disaster quickly from our one-seg TVs.”
Note: the one-seg TV function on a mobile phone is powered by the phone’s battery
TOYO
KNIFE
Sendai-Shiogama Port
２５０ｍ
Miyagino district, Sendai City (after the huge tsunami waves)
(Summary from Sankei Shimbun (major Japanese national newspaper), June 24, 2011)
Mobile television – Example 2 Two policemen saved 40 lives from the train with the tsunami warning alarm from
mobile TV(one-seg) right after the earthquake occurred at 14:46 on March 11, 2011.
They got a tsunami warning alarm from the passengers mobile phone with TV when
checking if everyone is fine in the train. They quickly decided to lead the 40
passengers to the hill to avoid the disaster of tsunami. All passengers were safely
evacuated from the tsunami area before the tsunami struck the train.
Derailed cars of train
Shinchi Station
Route for
evacuation
Track of Japan
railway
Pacific
Ocean
Shinchi Station
Town hall of Shinchi
The hill
Passengers got
on the truck here
The cars of train derailed off the track by huge tsunami waves.
(March 12, 2011)
(Summary from Yomiuri Shimbun(Japanese major national news paper), March 29, 2011) 27
Emergency system for high-speed train
Measuring equipment of
earthquake on railroad
Measuring equipment of
earthquake around coast
Main-wave
P-wave
S-wave
EARTHQUAKE
Measuring
control center
Equipment
of
earthquake
28
Ⅱ-2. Communications Systems
29
Central Disaster Management
Radio Communications System
A Communications Satellite
ヘリテレ
Transmission of pictures
from helicopters
官邸
Prime Minister’s
(災害対策本部)
Office
Tachikawa Reserve Facility of
the Government Headquarters for
Disaster Management
Real time pictures on the spot
Designated
Public Corporation
Government
designated
Prefectures
Tokyo
Metropolitan Area
Communication Network
for Disaster Management Organizations
Located Tachikawa Wide-area
Disaster Management Base
Ariake no Oka Core Wide-area
Disaster Prevention Base
Cabinet Office
(Disaster Management)
Mobile equipment
Communications Network for
Disaster Management
Organizations in Central Tokyo
On-site Disaster
Management Headquarters
Designated Local
Public Corporations
Communications Network for
Local Disaster Management
Organizations
Source: Cabinet Office
30
Ⅱ-3. Information Sharing





TV
Mobile TV
Radio
Data Broadcasting
Internet
31
Media used at the time of earthquake
Immediately after the earthquake, the usefulness of mobile phones, mobile phone
messages and terrestrial broadcasts received higher evaluation and at the end of April, the
evaluation of the usefulness of mobile phones, mobile phone messages and terrestrial
broadcasts exceeded that of radios.
During the period from the occurrence of the earthquake until the end
of April, the websites and search sites of administrative agencies and
news media received higher evaluation
At the time of
occurrence of the
earthquake
Immediately
after the
quake
Until
April the end of
At the time of occurrence of the quake, AM radios
received the highest evaluation (60.1%) followed
by FM radios.
Phone calls and Emails
Broadcasting
Internet
Immediately after the earthquake, radios
were the only means to obtain information.
However, radios were insufficient to grasp
the actual state of damage in the area and it
took a long time to know of the enormous
damage caused by tsunami. We were unable
to know who was doing what and felt highly
anxiousness.
Others
32
TV Relay Station after Disaster
（Number of station）
140
Number of relay station off the air for TV
120
120
111
100
Number of relay stations off-the air for TV
reached the maximum on 12th March
76
80
64
60
61
57 57
59 58
53
45
40
42
37
32
19 18
20
5
TV stations suffered significant damages and 120
stations in eleven prefectures were out of service.
As there was no power supply in the large part of
the disaster areas, both transmitters and receivers
were not usable.
16
13 12 11
7 7 7 7 5 5 5 5 5 5 5 5 5 5
4 3 3 3 3 3 2 2
1
0
３
月
１
２
日
３
月
１
３
日
３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ３ ４ ４
月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月
１ １ １ １ １ １ ２ ２ ２ ２ ２ ２ ２ ２ ３ ５ ６
４ ５ ６ ７ ８ ９ ０ １ ２ ３ ４ ５ ８ ９ ０ 日 日
日
日 16
日 17
日 18
日 19
日20
日21日22日23日24日
11日
12 日
13 日
14 15
25日
28 29 30
４
月
７
日
４
月
１
０
6
日
４ ４ ４ ４ ４ ４ ４ ４ ４ ４ ４ ４ ４ ４ ５
月 月 月 月 月 月 月 月 月 月 月 月 月 月 月
１ １ １ １ １ １ １ ２ ２ ２ ２ ２ ２ ２ ２
１ ２ ３ ４ ５ ８ ９ ０ １ ２ ５ ６ ７ ８ 日
7 10
18日
19 日
20 日
21 22
日
日 11
日13日14日15日
日 25
日 26
日 27
日 28
日12
５
月
６
日
５
月
９
日
５ ５ ５ ５ ６
月 月 月 月 月
１ １ １ ２ １
２ ６ ９ ３ 日
9日12日16日
19日
23 1
Jun.
May
May
May
May
May
May
May
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Apr.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
Mar.
３
月
１
１
日
5
2 6
【Source】 Information material from MIC
Mobile TV in the Evacuation Center
Many people watched mobile TV in the evacuation center. As power was disrupted, mobile
TV was very important information source for the people in the disaster area.
Image: People could see TV through the mobile phone
even in the blackout in the afflicted area
(Summary from Sankei Shimbun (major Japanese national newspaper), June 24, 2011)
34
Local Disaster FM stations
Radio also played a very important role in the disaster area, as many radio receivers work with
batteries and people can receive information even during a power outage. MIC also provided
10,000 radios to the disaster areas free of charge.
Temporary radio stations have been set up which have been actively providing information
needed at local level. Many volunteers and local government officials contributed to the
operation of such local radio stations.
The Studio of “Natori Saigai(disaster) FM” established at Natori City office building,
Miyagi prefecture
35
Temporary Disaster Designated Broadcasting Stations for Devastated Area
Iwate
 26 stations are established.
MIC has quickly granted broadcasting licenses to
local disaster FM stations, which account for 21 in
the disaster area.
●
●
●
●
●
●
●
Miyagi
●
●
●
●
J●
●
●
●
Fukushima
●
●
●
●
●
Newly established by communities
● Based on the community FM
● Established by broadcasters
●
●
●
国土地理院承認 平14 総複第149号
36
36
36
Digital Signage system at Normal Time
出典:デジタルサイネージ総研
Source: Digital signage Now
Digital Signage systems at the time of disaster
Digital signage network is effective tool for information provision at the time of disaster.
After the earthquake, all the train services stopped and there was terrible traffic jam in Tokyo. About 5
million people were not able to go home. Digital signage system was used as media to provide
information.
■Scenes at each monitor in Tokyo on 11 March 2011
st
A: At a monitor set on 1 Floor at Marunouchi
Building (Photographed around at 22:00)
B: At a monitor set in Central Entrance on 1st
Floor of Otemachi Building
(Photographed around at 16:00)
C: At a monitor set in Elevator Hall on B1
Floor of Shin-Marunouchi Building
(Photographed around at 22:00)
D: At a monitor set on B1 Floor of Marunouchi
Building (Photographed around at 22:00)
38
(Source: MITSUBISHI ESTATE CO.,LTD.)
The Internet as a Lifeline - Person Finder (Google)
– Person Finder provides a registry and message board for survivors, family, and relatives affected
by a natural disaster to post and search for information about each other's status.
(Source: Google)
39
The Internet as a Lifeline - Posted Photos of Evacuee Lists
Traffic Information in Disaster Area
Some car navigation system gathers driving information from navigation unit and the system
consolidate information and send traffic information to users. On March 14, Honda released this
driving information gathered through their navigation system on the website. This information
became instantly available through Twitter and Facebook. Many people thanked that “We could
deliver relief supplies”, or “We could reach family and relatives” by using this system.
Road with traffic record : Blue
No-traffic record
: Gray
Vehicle congestion
: Red
22 March
6 May
(Source: website of ITS Japan)
Ⅱ-4. Research and Development
- for the future
42
R&D into Strengthening the Disaster Tolerance (3rd FY 2011 Supplementary Budget)
(1) Research and development of
technologies for reducing the incidence of
mobile-telephony congestion during disasters
This project establishes communication technologies for
maintaining the use of voice calling during disasters, when voice
communication increases dramatically as users make safety
confirmation calls. The technologies make intensive use of nonvoice communication-processing capabilities and of
communications equipment located outside the affected regions.
(2) Research and development of
technologies for autonomous recovery of
disaster-damaged infrastructure
This project establishes radio communications technologies
for ensuring autonomous access by local authorities and
public facilities to the Internet and other communications
even if the regular communications infrastructure has been
damaged by disaster.
Data
transm
ission
System having
improved flexibility
Internet connection
Transmitting images of
coastal waters
Information on
well-being
important
Emergency
voice calling
Wireline network
Data line
Mobile-telephone
network
Research and development,
testing/verification/evaluation
Forming a world-leading research center
Communications processing capabilities for
different services flexibly shared out in the event of
disaster
(3) Provision of research center
at Tohoku University, etc.
Fostering innovation, strengthening collaboration
between industry, academia, and government, and
promoting standardization and developing results
through joint research with universities in the
affected regions
● Achieving information and communications
networks that are robust in disasters
● Reviving local economic activity in affected regions
Japan’s National Institute of Information and Communications Technology (NICT) has provided Tohoku University with test bed
facilities for testing, verification, and evaluation supported by the NICT facilities-improvement fund.
 Provided are communications network testing equipment introducing the world’s most advanced optical transmission technology,
used in testing technologies for reducing network congestion; field-portable radio network equipment, used in testing autonomous
recovery technologies; and field-portable satellite earth station equipment.
43
R&D on Dynamic Control of Mobile Communication Networks
at the Time of a Major Disaster
- Flexible reconfiguration of communication processing resources
- Maximum possible resources can be directed to basic communication services
during a disaster.
Next-generation congestion-proof system
Voice
calls
Email,
internet
Voice
calls
Music
Movies
Normal
use
Email,
internet
Music
…
Basic communication
services
Basic communication services
…
Voice calls
Email, internet
(emergency
message boards)
Music
Movies
Files
…
Rich media etc.
Emergency
use
Movies
Files
Files
No possibility to reconfigure or redirect
processing resources
Voice calls
Rich media etc.
Email, internet (emergency
message boards)
Other
Dynamic allocation of processing resources
44
R&D on Inter-Cloud Technology for Wide-area Disaster Responses
-
-
Sharing resources among multiple cloud systems by optimal communication route after a large-scale
disaster
Transfer whole processing functions from one cloud to another within 30 minutes
Advantages of the Inter-cloud approach
- Individual operators can keep investment costs to a minimum.
- Small and medium-sized operators will not be forced out of business.
2 stand-by
facilities
Cloud 1
Normal load
3 facilities
Overload
4 facilities
Cloud 2
Use stand-by
facilities of
other carriers
Cloud data center A
Cloud 3
1 stand-by facility
Available to local
businesses in the
Tohoku region
1 stand-by facility
Boost disaster response capacity by
Inter- clouds dispersed around remote regions
Inter-Cloud test bed
Cloud data center C
Cloud data center B
Technology for instant switching
based on validation using JGN-X
45
ITU-T FG-DR&NRR Tokyo, Japan: “Technical Tour of SENDAI CITY”
R&D Projects for Resilient Information and Communication Networks in Japan
MIC and NICT of Japan are promoting R&D projects for realizing a
resilient information and communication network. Please come up
to Sendai and check them out on a technical tour on 8th February,
2013.
Project examples:
Contact;
Mr. Yasuo SHINOZAWA
Deputy Director
Technology Policy Division
Ministry of Internal Affairs and Communication
E-mail: resilient-ICT@soumu.go.jp
R&D for relieving service congestion in the mobile network caused by disaster
 Under a disaster, a vast amount of voice calls are made in
mobile carrier networks and an unprecedented level of traffic
(congestion) is generated.
 New network technology applicable to current and next
generation networks to relieve service congestion in the
network will be explained.
Resource reallocation by dynamic control
Voice
Mail
Music
Video
File
By design
High priority
service
Rich media
communications
In a disaster
R&D on the reconfigurable communication “resource unit” for disaster recovery
 A “Resource Unit” which can meet the wide variety of communication demands under a disaster will be
explained.
 The “Resource Unit” can be transported by means such as a high-mobility vehicle, can be connected to
surviving communication networks, and can reconfigure the damaged networks immediately.
Developments of next generation VSATs effective for severe disasters
 Even in the event of a destroyed ground communication infrastructure by disaster, easy and prompt
establishment of satellite communications networks secures alternative communication paths.
 New multimode VSATs that can connect to heterogeneous satellite systems using easy procedures in a disaster
will be explained.
Thank you for your attention!