Development of Mobile Broadband and Spectrum Policy Vision

PTC Seminar on
Spectrum Future
Development of Mobile Broadband
and Spectrum Policy Vision
October 2014
Radio Department
Ministry of Internal Affairs and Communications
Japan
Increase of Mobile Users and Development of Functions
Number of Subscribers
（百万）
150
・Mobile Phones:
・3G :
・LTE :
140
June, 2014
appx. 145.55 million（113.7%）
appx. 94.66 million （73.9%）
appx. 50.89 million （39.7%）
※Total population
appx.
Ratio 3G+LTE 100 %
※ world wide average 20 %
（source: GSM Association）
128.06 milion
2012.7
2G terminated
130
120
110
100
100 %
2010.12
LTE started
3G＋LTE
80
70
20006 0
Handset with
50
camera
2004
Digital wallet
40
30
1999
started
2 i-mode
0
(internet access)
10
2002
ringtone service
0
1996
1998
2005
fixed rate for
packet service
2000
2002
2004
2006
2008
（as of FY end）
2010
2012
2014.6
Mobile phone users
2001
3G started
90
2
Increase of Smartphone Users and Mobile Communications Traffic
Number of Smartphone Subscribers
(million)
70.0
(Gbps)
800
Mobile Communications Traffic
Monthly Average
706.5
700
60.0
600
50.0
586.2
546.4
500
469.8
40.0
422.0
400
30.0
57.3
43.6
20.0
25.7
10.0
300
200
100
9.6
0
0.0
10
671.7
59% increase
in one year
349.0
328.9
274.3
234.8
181.3
154.6
123.5
105.2
Growth of Mobile Data Traffic in total and per user
(Gbps)
800
700
Busy Hour Traffic
(Average Traffic 11pm)
1200
59% increase
in one year
671.7
1000
5000
57% increase
in one year
4500
979.8
869.5
823.3
546.4
800
500
712.7
469.8
422.0
400
349.0
522.9
487.7
100
400
200
417.9
270.0
227.9
180.6
0
2011.03
2011.06
2011.09
2011.12
2012.03
2012.06
2012.09
2012.12
2013.03
2013.06
2013.09
2013.12
2014.03
3500
3965
3751
3276
2985
3000
2500
2425
2063
1799
2000
1500
350.2
157.1
105.2
0
623.2
1000
500
1430
1251
1018
883
0
2011.03
2011.06
2011.09
2011.12
2012.03
2012.06
2012.09
2012.12
2013.03
2013.06
2013.09
2013.12
2014.03
200
274.3
234.8
181.3
154.6
123.5
4435
2528
600
328.9
300
49% increase
in one year
4000
586.2
600
Average Traffic
per Subscriber
(bps)
2011.03
2011.06
2011.09
2011.12
2012.03
2012.06
2012.09
2012.12
2013.03
2013.06
2013.09
2013.12
2014.03
Average Traffic
(Gbps)
4
4
○Mobile data communication traffic has increased at a pace of approximately 1.6 times in one year.
Increase of smartphone users and use of large-volume contents, such as videos, streaming data
History of Mobile Communications Terminals
1979
5
On Vehicle Mobile Phone（1st and 2nd Generation)
1979.12~1999.3 analog 1999.3 ~2012 digital
1991
Analog Cellular Mobile Phone （1G 、Mova）
1991.４~1999.3
【rental subscription US$400, Monthly US$150, Guarantee US$900】
Digital Cellular Mobile Phone (PDC, 2G)
1993.3~2012.3
Data transfer at 9600bps （≒0.01 Mbps）
* used as modem by connecting with PC
1993
1999
i-mode introduced
E-mails transaction directly from handset
【ARPU FY2000 8,650 Yen = US$ 80】
2001
W-CDMA (first 3G)
2001.10～、 Data Transfer at 64~384 kbps
【ARPU FY2003: 7,890 Yen = US$ 70】
2010
LTE（３．９G）
2010.12～, Data Transfer at 37.5~150 Mbps
【ARPU FY2010 5,320 Yen = US$ 50】
5
Changes in ARPU Level and Structure (NTT Docomo’s Case)
Voice ARPU
Packet ARPU
Smart ARPU
Source: NTT Docomo HP
Frequency Allocation for Mobile Communication Systems
Bands
700MHz 800MHz 900MHz 1.5GHz
FDD/TDD
Bandwidth
FDD
30MHz x 2
FDD
30MHz x 2
FDD
15MHz x 2
FDD
35MHz x 2
1.7GHz
FDD
35MHz x 2
2GHz*
FDD
60MHz x 2
TDD
2.5GHz
Total
Subscriber
―
160MHz
63.57
mill
―
110MHz
41.02
mill
―
90MHz
36.48
mill
―
81.2MH 4.49 mill
(PHS)
z
5.52 mill
TDD
(June. 2014)
100MHz**
31.2MHz
LTE(plan)
3G/LTE
LTE(plan)
3G/LTE
20MHz 30MHz
Limited
20MHz 30MHz
Limited
―
***
LTE(plan)
―
―
―
3G/LTE(plan)
LTE
3G/LTE
3G/LTE
40MHz 40MHz
30MHz Only
in some areas
LTE
20MHz
3G
30MHz 20MHz
Partially limited
―
―
3G/LTE
40MHz
3G/LTE
40MHz
3G/LTE
PHS
20MHz
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
Limited
31.2MHz
30MHz Frequency
sharing
(Cellular phone)
WiMAX R2.1
50MHz 50MHz 4.15 mill
AXGP
30MHz 30MHz 3.96 mill
Total : 521.2MHz
* Others, such as pending systems (2GHz-MSS:60MHz, 2GHz-TDD:15MHz)
** including Regional WiMAX (20MHz)
*** eAccess and Willcom merged on June 1st, 2014（Change in corporate name from eAccess to Y!mobile on July 1st, 2014）
Radio Spectrum Use in Japan
Wavelength100km
Frequency 3kHz
10km
30kHz
Typical
Services
Docomo
KDDI
eAccess
10m
30MHz
ＬＦ
ＭＦ
ＨＦ
900MHz
band
1.5GHz
band
1.7GHz
band
Docomo
Docomo
Softbank
KDDI
Softbank
1m
300MHz
10cm
3GHz
1cm
30GHz
1mm
300GHz
0.1mm
3000GHz
Marine radio
FM broadcast
DTB
Microwave relay
Aeronautical radio Disaster prevention Mobile phone/PHS Satellite broadcasting
Public safety
Wireless LAN Radio astronomy Radio astronomy
Shortwave broadcast
RFID
Air control
Cordless phone
Wireless LAN Satellite communication
Marine radio
AM radio
Beacon
800MHz
band
KDDI
100m
3MHz
Beacon
Standard wave
RFID
ＶＬＦ
700MHz
band
1km
300kHz
8
Docomo
eAccess
ＶＨＦ
2GHz
band
Docomo
KDDI
Softbank
ＵＨＦ
ＳＨＦ
2.5GHz band
UQ Communications
Wireless City Planning
BWA system
3G system
ＥＨＦ
3.4GHz band
―
4G system
(planned to start the service around 2015)
※PHS（1.9GHz band）…WILLCOM
● The Information and Communications Council issued a report on technical
conditions for Long Term Evolution-Advanced (LTE-A), a cellular networking
standard for previously assigned IMT band and 3.4-3.6 GHz band (Jul. 2013).
MIC developed amended technical regulations in accordance with the report.
● Regarding the introduction of LTE-A in 3.4-3.6GHz band, assignment of the band
to operators is planned before the end of this year.
Broadband Traffic over Fixed Network and Mobile Network
While the total download traffic of fixed broadband subscribers in Japan increased by
27.1% from year 2013, the total traffic of mobile phone users increased by 47.9% , and
has reached 600 Gbps.
(Gbps)
Download traffic over fixed network (red) and mobile network (yellow)
3000
2,892
Total Download Traffic
over fixed broadband
networks
2,892Gbps (estimated）
2,584
2500
2,275
2000
27.1％
Increase
1,905
1,730
1,600
1,516
1500
1,102
1000
939
500
390
459
540
257344
351
241
295
224 259
216
189 209
708
629
398
447
835
799
494 574
655
769
905
770
741 715
693
834
621
521 592
490
420
378
313
296
247
47.9％increase
211
163
139
112
65 80
95
36 44 49 57
12 15 18 23 27 33
10
640
658 666
86
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
7
9
11
1
3
5
0
1,206
2004
2005
2006
Total Upload Traffic
over fixed broadband
networks
905Gbps （estimated）
1,363
1,235
2007
2008
2009
2010
2011
2012
2013
Total Download
Traffic over Mobile
Networks 621Gbps
Total Upload Traffic
over Mobile Networks
86Gbps
2014
（*1） FTTH、DSL、CATV、FWA
（*2） 2011年5月以前は、一部の協力ISPとブロードバンドサービス契約者との間のトラヒックに携帯電話網との間の移動通信トラヒックの一部が含
まれていたが、当該トラヒックを区別することが可能となったため、2011年11月より当該トラヒックを除く形でトラヒックの集計・試算を行うことと
した。 （5月、11月に計測）
（*3）『総務省 我が国の移動通信トラヒックの現状（平成２６年６月分）』より引用（3月、6月、9月、12月に計測）
9
PTC Seminar on
Spectrum Future
Spectrum Policy Vision 2020
Interim Report
Society in Year 2020 and Wireless Systems
11
Japanese Society in 2020 and after
○While Japanese society keeps aging, the society has to be more convenient, safe, secured, resilient and sustainable.
As well, the economy needs to be more energy saving, time saving, cost saving and competitive.
○For those purposes, various wireless technologies and services should be widely introduced and used throughout the
nation. The spectrum policy has to contribute to the purposes through efficient use.
（Purposes）
（Roles of Wireless Use）
1 Development of Mobile Communications in
Quality and Quantity
Convenient,
Active,
Comfortable
Safe, Secured,
Resilient
Sustainable,
Competitive
（Typical Systems by Spectrum）
○ 4G/5G enabling comparable transmission with
optical fibers
○ Various devices including wearable terminals
2 Development and penetration of M2M
Communications
○ Sensor Network
○ Smart Network, smart grid, smart community,
etc.
3 Higher Usage of High Resolution Image
Technology
○ Mobile viewing
○ Special operation with High resolution image
4 Higher Usage of Wireless Systems for Safety,
Security and Resilience of Society
○ Infrastructure Monitoring System
○ Next Generation ITS
○ Life Monitoring and Disaster Response by
G-space info.
5 Wider Delivery of Public Services by Wireless
Technology
○ Disaster Communications
○ Satellite Communications and G-space
applications
6 Applications of Wireless Technologies in
Broader Areas
○ Radars, sensors
○ Wireless Power Supply
Priority Systems and Spectrum Use
Priority Systems up to 2020 (tentative)
5G Mobile Phones, WLAN, 4K/8K Broadcasting, ITS
（１）Targets in Spectrum Use by 2020
①Mid-Term Target to 2020
In total, 2000 MHz bands should be provided for
wireless broadband services.
Spectrum needed by 2020 and after
②Target after 2020
Target should be reviewed by considering
development of new services such as M2M etc.
as well as necessary preparation for
Olympic/Paralympic Games.
⇒WLAN and other access should be included.
（２）Measures to ensure Efficient Use
① Strengthening PDCA review system
・Annually frequency use should be analyzed and action plan should be renewed.
・Incentive systems and facilitating schemes for reallocation should be studied.
② Promoting spectrum Sharing
Better use of White Space, and other sharing scheme should be promoted.
③ Strategic R&D Promotion
R&D should be implemented under public and private collaboration with strategic targets and practical plans.
12
PTC Seminar on
Spectrum Future
5 Generation Mobile Communications
5G Mobile communications to be realized in 2020
(bps
)
10G
Communication speed will be 10,000
times faster in 30 years
5G
LTE-Advanced
1G
100M
HSDPA
Browser
10M
Photos
(still
images)
1M
Mail
Voic
e
Analogue
PDC
9.6Kbps
1G (analogue
1980 based)
1990
64Kbps
28.8Kbps
2G (digital
based)
2000
1Gbps
4G
100Mbps
14.4Mbp
s
HSUPA
3.5G
CDMA200
0
1x EV-DO
W-CDMA
Packet
Communicatio
ns
cdmaOne
100k
10k
LTE
Movie
14
3.9G
2.4Mbps
Capacity increased
by introducing
OFDMA & MIMO
3G (IMT2000)
384Kbp
s
Capacity increased
by transition from
TDMA to CDMA
2010
2020
(year)
Studies in MIC on 5G
 MIC set up Spectrum Policy Vision Council in Jan. 2014.
 The Future of new spectrum use
 Setting goals for realizing new spectrum use
 The final report will come at the end of 2014
 5G is one of the major pillars for development
 Roadmap of 5G was made by the Council
15
Roadmap Towards Realization of 5G
In 2012
2013
2014
2015
2016
2017
2018
2019
Rugby
World Cup
Promoting
Body
ARIB
2020 and Beyond Adhoc
Inauguration of Promoting
Body (TBD)
R&Ds
Investigation into potential spectrum for 5G through R&D activities
Amend regulations,
allocating Spectrum,
deploy base stations, etc.
International
Affairs
Examine 5G Requirements and Service image
Propose & Evaluate Interface
●ITU-R Report IMT.FUTURE TECHNOLOGY TRENDS
●ITU-R Rec. IMT.VISION
●ITU 5G Workshop
World Radio Conf.
(WRC-15)
5G Standardization
Activities
Secure additional spectrum to 4G
Discussion of spectrum for 5G
Ref.
4th Gen. Mobile
ITU
Radiocommunication
Assembly (RA-12)
World Radio Conf.
(WRC-19)
Possibilities of
identification
of 5G bands
Study on spectrum for 5G
as a preparation of WRC-18 with attention to international harmonization
Set up global Standards
(IMT-Advanced)
Standization
Co-existing study,
establishing technical
standards in Japan
Frequency
Assigning
Deploying
base stations
Service-in
2020
2021
Tokyo Olympic /
Paralympic Games
Missions (examples)
Giving strategic guidance on R&Ds,
standardization, international
cooperation & public relations
R&Ds on 5G through Industry-AcademicGovernment Cooperation
ITU
World Radio Conf.
(WRC-12)
16
Expanding service area
World’s
first 5G
implementation
Government Supported R&D for 5G Technologies
 5G related R&D projects will start intensively in FY2015
 MIC financially supports R&D projects on technologies that use
higher frequencies and use spectrum more efficiently
R&D projects on intercell-coordinating
technology in high-density multi cell
layers/accesses and on high-frequency super
high bit-rate technology by Massive MIMO
examples
BBU
Core NW
LTE／
LTE-A
WiGig
Control
Unit
Small cells
Wi-Fi
R&D projects on Area Forming
従来の基地局
アンテナの例
基地局
アンテナの指向性
（電波が飛ぶ方向
範囲）
干渉エリア
アン
テナ
エリアフォーミ
ングアンテナ
の例
Massive
MIMO
R&D projects on Dynamic
Spectrum Access technology
第5世代携帯電話専用帯域
端末
カバレッジ
ホール
場所・時間に応じて利用可
能な
17
PTC Seminar on
Spectrum Future
Improvement of WLAN Environment
Establishing User-friendly ICT Infrastructure for Foreign Visitors
Keeping in mind Tokyo Olympic/Paralympic Games in 2020, the Government decided
an action plan ‘SAQ SAQ Japan Project’, which intends to provide better ICT
environment for foreign visitors to Japan.
※ SAQ SAQ means Selectable, Accessible and Qualified service for Internet users.
１．Facilitating expansion of free Wi-Fi Network
（１）MIC, Tourism Agency, Telecom Operators, site owners etc. jointly established a forum to facilitate expansion of
Wi-Fi network along with activity ranges of foreign visitors, as well as to simplify the procedures for subscription.
（２）MIC studies how to handle Wi-Fi equipment brought by foreign visitors without testing technical conformity with
domestic standards.
２．Improving usage environment for foreign smartphones/mobile phones by using domestic SIM card
（１）MIC facilitates simplification of subscription procedures and improvement of usage
environment for foreign visitors to use domestic SIM issued by MVNOs.
（２）MIC studies how to handle mobile handsets brought by foreign visitors without
testing technical conformity with domestic standards.
３．Reduction of international roaming charges
（１）MIC facilitates bilateral consultations to reduce international data roaming charges
４．Promotion of ‘Global Communications Plan’ to diminish language walls
（１）MIC promotes development of multi-language automatic translation system.
Activity Ranges of Foreign Visitors
Event Stadium
Cafe
Sight seeing
Airport
Hotel
Station
Expanding WLAN on Public-Private Partnership
Tourist Sites
Commercial Sites
Buses
Amusements
Restaurants
Stores
Kiosks
High business incentive
・Attract visitors by improving
communication environment
Encourage site owners to invest
Parks
Historical
Sites
Museums
Info. desks
Evacuation
Spots
Evacuation
Center
Gov.
Low business incentive
・Improve communication environment for
foreign visitors and provide better condition
at disaster time
Support local gov. for development
Local Gov. make plans to expand WLAN on PPP
lead
Stations
Hotels
G ov.
Business lead
Airport
Disaster Management Sites
Wi-Fi Station Project
Government provides financial support to local governments or public entities, who intend to promote
improvement of public WLAN environment by installing Wi-Fi stations.
○Supported sites: ① Tourist sites: Tourist offices, Historical Assets, Natural Parks, Museums etc.
② Disaster Management Sites; Evacuation Spots, Evacuation Centers, City Halls etc.
○Support ratio ：local government ½, semi-public sector 1/3
Concept
In tourist areas, Wi-Fi
networks for moving users are
installed for benefits of tourists
Wi-Fi Stations and
Access Points
In disaster management areas,
Wi-Fi networks with robust
and resilient structure are
installed for safety at disaster time.
Tourist Sites
Info. Office
DM Sites
City Halls
Museums
Evacuation
Natural Parks
heritages
Smartphones and Tablets
・provide
useful
tourist info.
Smartphones and Tablets
・provide
necessary
disaster info
Shelters
Changes in Number of WLAN Access points for Off-Loading
Mobile operators recently increased the numbers of WLAN access points to control
their data traffic by off-loading. Comparison of available stats shows the rapid
changes.
500,000
Appx.440,000
400,000
300,000
Appx.260,000
Appx.240,000
200,000
Appx.150,800
Appx.100,000
100,000
Appx.14,200
0
H24.6末時
Jun.
点 2012
H26.10月時
Oct.2014
点
NTT
Docomo
ＮＴＴドコモ
Mar.H24.3末時
2012 H26.9末時
Sept.2014
点
点
KDDI
H24.5末時
May
2012
点
H26.9末時
Sept.2014
点
Softbank Mobile
ソフトバンクモバイル
PTC Seminar on
Spectrum Future
4K/8K Broadcasting
4K/8K (1) — Significance of 4K and 8K
• Full-HD (2K) broadcasting started upon the completion of digital terrestrial
switch-over in March 2012.
• The specifications of Ultra-High Definition TV (4K and 8K) were set by ITU in
2006.
• The display image qualities of 4K and 8K are four times and 16 times higher
than current Full-HD (2K).
Practical
Resolution
2K
(Current FullHD)
4K
8K
About 2
Application
million pixels
1,920 * 1,080 = 2,073,600
About 8
million pixels
3,840 * 2,160 = 8,294,400
About 33
million pixels
7,680 * 4,320 = 33,177,600
20
TV
(HDTV
broadcasting, e.g.,
digital terrestrial
TV broadcasting)
Movie
(Digital
production and
distribution)
Experiment
(Public Viewing)
4K/8K (2) — Potential Applications of 4K and 8K
 4K and 8K video technology is expected to not only be applicable in the field
of broadcasting but also spread to education, science, medicine,
layout/design, planning and industry use (BtoB). • Consumer use TV
• Broadcasting equipment
 Expected domestic market of 4K
(Cameras, editors, encoders)
and 8K in 2020 is 4,400 billion JPY.
Broadcastin
(1,940 billion JPY)
g
• Museums, Art museums
• Cultural property, archives Education
(3 billion JPY) / Science
• Digital cinema
(Projectors, screens) Movies
(620 billion JPY) , Live
• TV conference system
TV
/services
conferenc
• Projectors
e, etc.
(60 billion JPY)
Advertisin
g, etc.
4K/8K
Ultra-HighDefinition
Video
Technology
Crime
prevention
,
monitorin
sensors)g
・Security cameras
・Industrial cameras (area
(70 billion JPY)
22
• Digital signage
• Outdoor-type LED displays
(1,050 billion JPY)
Medica
l
Layout,
Design
• Medical monitors
• Endoscope systems or
the monitoring of surgical
procedures
(340 billion JPY)
• CAD, CAM, CG
(Mechanical design, automobile
and industrial design)
(340 billion JPY)
Source: Mitsubishi Research Institute
4K/8K (3) —Roadmap for 4K/8K Promotion (As of Sept. 2014)2020
Expected Situation in 2020
 Tokyo Olympics and Paralympics Games are being broadcast in 4K/8K.
 Enthusiasm for the 2020 Tokyo Olympics and Paralympics are being shared nationwide
through public viewing.
 4K/8K obtains popularity and programs are being enjoyed by many home-viewers.
Bring forward 1 year
2014
Satellite
CS
4K Test
Broadcast
2015
2016
4K Actual
Broadcast
CATV
4K 8K Test
Broadcast
4K VOD Trial
IPTV
etc.
4K Test
Broadcast
4K VOD
Service-in
2020
4K Actual
Broadcast
BS
4K Test
Broadcast
2018
4K Actual
Broadcast
4K 8K Actual
Broadcast
(earliest
possible)
8K Experiment
4K Actual
Broadcast
23
8K Experiment
Source: MIC
PTC Seminar on
Spectrum Future
Intelligent Transport System (ITS)
Wireless communications for ITS in Japan
700 MHz ITS
（Driving Safety Support Systems）
Electronic Toll Collection System (ETC)
28
Millimeter Wave Radar
24/26 GHz Band UWB
Radar or 79 GHz Band
High-resolution Radar
76 GHz Band Longdistance Radar
Avoiding Vehicle Collisions by
vehicle-to-vehicle communications.
1620
kHz
76～90
MHz
755.5～764.5
MHz
2.5
GHz
5770～5850
MHz
22～29
GHz
60～61
GHz
76～77
GHz
78～81
GHz
(2) Simplified Graphic display type
Roadside Broadcasting
(Highway radio)
GHz
MHz
kHz
Vehicle Information and Communication System (VICS)
Dedicated Short Range Communication
(DSRC・ITS Spot)
左から合流車、注意
(1) Text display type
(2) Simplified Graphic display type
(3) Map display type
ITS spots provide information
detected by roadside sensors.
ITS Wireless Communication Systems in Japan
Roadside
Broadcasting
Spectrum
Service
Introduction time
1620kHz
Provide Traffic
information
Since 1980
(Highway Radio)
VICS
76-90MHz (FM
Provide Traffic
(Vehicle Information and multiplex broadcasting)
information
Communications System) 2.5GHz (Radio beacon)
Enacted in 1994
ETC
(Electronic Toll
Collection)
5.8GHz
Collect highway toll
Enacted in 1997
5.8GHz
Provide various
information
Enacted in 2001
(Revised in 2007)
760MHz
Provide safety
information
Enacted in 2011
Detect obstacles
Enacted in 2010
Enacted in 1997
Enacted in 2012
DSRC
(Dedicated Short Range
Communication)
Driving Safety Support
System
24/26GHz
Millimeter-wave radar 60/76GHz
79GHz
29
700MHz band communication for Driving Safety Support System
30
Example Services (drives on the left)
[V2V, V2I]
Left-turn collision with motorcycle
prevention system
[V2V, V2I]
Right-turn collision
prevention system
ITU-R Report M.2228
“Advanced ITS
Radiocommunication”
ARIB STD-T109
“700 MHz band ITS”
[V2V, V2I]
Crossing collision prevention system
[V2I]
Crossing pedestrian
recognition enhancement
system
[V2P]
Pedestrian
existence advisory
system
PTC Seminar on
Spectrum Future
Measures for Efficient Spectrum Use
Utilization of TV White Space Frequency
What is “White Space” ?
Depending on geographical and other technical conditions, a frequency band can
be re-used for other services than broadcasting when the terrestrial broadcasting
station uses a different band from the neighboring coverage.
1 Channel
A area
2 Channel
B area
“White Space” with 2 Channel can be used in this area.
In theory in each area, there should some channels available for other services.
However, it is necessary to investigate whether interference cannot be caused by using white
space in the area.
32
Examples of Field Trials of TV White Space in Japan
33
○ Various field trials of TV white space were carried out by 35 entities after August 2010. “Area broadcast
systems” and “licensed wireless microphone” were selected for implementation by considering its result.
Information service
on sightseeing spots and events
Construction of network
in specific areas (sensor
network ,etc.)
Sightseeing
information
Energy supply and demand control
Wind power system
Hydro power Photovoltaic
generation generation
generation
Sensor
Network
Energy
supply and demand
control system
Event
informatio
n
Communication systems
in the time of disaster
Office
Home
Electric car
Information service at stations and
airports
Real time
Advertising
information
Real-time advertisement service
Parenting Information
Town
information
Town information service
居酒屋
メ ニ ュ ー＆ク ーポン
居酒屋●●●●
[ 住所 ]●●●●●●●●●●●●
[ 電話 ]●●●●●●●●●●●●
Information service
at sports stadiums
Information service on
campus
Proposed systems for TV White Space
Systems already implemented
Licensed wireless
microphones
（of high quality）
Area broadcasting systems
（local community）
Local
government
（shopping area）
送信機（ハンド型）
transmitter
送信機（ピンマイク型）
可搬型受信
Receiver
Receiver with camera
カメラレコーダ装着例
（transportation）
（emergency
commutations）
3
4
transmitter
機
Other proposed systems
ホワイトスペースを利用した
センサーネットワーク
Sensor
networks
水力発電
Hydro power
plant
太陽光発電
Solar
power plant
Emergency communication systems
Wind
power plant
風力発電
Receiver
発電・産業プラント
Plant
Robot
災害ロボット
Camera
Broadband communication
（super Wi-Fi）
Antenna
カメラ
アンテナ
TVWS無線
TVWS
device
伝送装置
internet
マイク
microphon
e
中継
Robot
ﾛﾎﾞｯﾄ
(自走)
Pla
無線
nt
Plant
Home
家庭
ﾌﾟﾛｰﾌﾞ
Robot
ﾛﾎﾞｯﾄ
(自走)
無線
Plan
t
操作コンソール
Controller
現場映像＋音声、操縦
Plant建屋内
工場
Plant
オフィス
Office
Plant
敷地
Broadband transmission by super
Wi-Fi is also proposed by
NICT and other private entities.
ＴＶ White Space User System Operation Coordination Forum
TV White Space User System Operation Coordination Forum provides a framework necessary operation
coordination among user systems, including management of database used for information management
and evaluation of necessity for coordination as well as network of relevant licensees etc.
User
Systems
spectrum bands
concerned
and
Licensed Microphone (high quality)
 TVWS（470MHz～710MHz）
 710MHz～714MHz
 1.2GHz
Management of
operation info.
Decision on necessity of
coordination
TVW User System S
Coordination Forum
Database
registration
communication
Guidance over coordination
Area Broadcasting
 TVWS（470MHz～710MHz）
ＦＰＵ
 1.2GHz
 2.3GHz
Licensed
Microphones
Operators
Area Broadcasting
Licensees
Broadcasting
companies
Others (if any)
・Disaster Communications
・sensor network
under consideration
Other systems introduced to use White Space Bands
Member
Procedures
Self coordination
Member registers operation info such as location, time, etc. through Internet when needed.
Forum decides the necessity of coordination by the database and send emails for guidance to the members when needed.
The members concerned communicate and coordinate with each other.
New Method for Spectrum Reallocation
Traditional
36
Time required : about 1o years
• Only after the existing operator stops all transmitters and transfers to new bands, the new
licensee starts deployment of base stations.
Existing stations
All transferred
deployment
New licensee
New Method
Time required : about 5 years
• The new licensee financially supports transfer of spectrum, and starts deployment of new
stations where the band becomes available.
Existing stations
Step-by-step
transfer
Deployment
New licensee
Deployment
New licensee
Deployment
New licensee
PTC Seminar on
Spectrum Future
Thank you !
Ministry of Internal Affairs and
Communications, Japan