Smart Korea 2011 Asia's IT Future and role in the Smart eraitfind.or.kr/smartkorea/2011/creative_06.pdf · · 2011-11-02Typical 3G radio network configuration in DOCOMO. Remote

Copyright© 2011 NTT DOCOMO, Inc. All rights reservedCopyright© 2011 NTT DOCOMO, Inc. All rights reserved 1Seizo ONOEOctorber 12, 2011

Evolution to a true 4th GenerationEvolution to a true 4th Generation Mobile CommunicationsMobile Communications

Seizo ONOESeizo ONOESenior Vice President and Managing Director of Senior Vice President and Managing Director of

R&D Strategy DepartmentR&D Strategy DepartmentNTT DOCOMO, INC.NTT DOCOMO, INC.

Smart Korea 2011

Asia's IT Future and role in the Smart era

Copyright© 2011 NTT DOCOMO, Inc. All rights reservedSeizo ONOEOctorber 12, 2011 2

ContentsContentsMobile Market Trends

Overview of LTE Service ‘Xi’

LTE Commercial Launch Strategy

Further Evolution to True 4G/LTE-Advanced

New Disaster Preparedness Measures against 311 Great East Japan Earthquake

end

SummaryPre-history of LTE standardization


31.5

41.5

51.1

61.169.3

75.981.9

87.091.8

96.7102.7

107.5112.2

119.5

0.1 7.216.7

30.4

48.3

88.1

99.6

109.1

118.2

34.6

51.9

62.569.7

75.279.8

84.488.7 91.2 93.2

97.4

69.9

0

20

40

60

80

100

120

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

Mobile Subscribers

3G Subscribers

Mobile Internet Access

31.5

41.5

51.1

61.169.3

75.981.9

87.091.8

96.7102.7

107.5112.2

118.2

0.1 7.216.7

30.4

48.3

88.1

99.6

109.1116.7

34.6

51.9

62.569.7

75.279.8

84.488.7 91.2 93.2 96.4

69.9

0

20

40

60

80

100

120

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

Mobile Subscribers

3G Subscribers

Mobile Internet Access

Mobile Market in JapanMobile Market in Japan

•The penetration rate of 3G has become almost 100%.•Mobile internet had been widely spread in early 2000s.

Reference : Telecommunications Carriers Association

Subs

crib

ers

(Mill

ion)

63% for e-mail,47% for browsing 37% for gamingin a train

Mar. Mar.

Copyright© 2010 NTT DOCOMO, Inc. All rights reservedSeizo ONOEOctorber 12, 2011 4Seizo ONOEFebruary 19, 2009 4

(Jun 2004)

Growth of Packet Traffic per UserGrowth of Packet Traffic per User

1,000

0

2,000

3,000

4,000

5,000

Num

ber of Packets P

er Day

・User

Feb1999

Aug1999

Feb2000

Aug 2000

Feb2001

Aug2001

Feb2002

Aug2002

Feb2003

Aug2003

Feb2004

Aug2004

Used 2G PacketsPer Day Per User

Used 3G PacketsPer Day Per User

We need more improvement in spectrum efficiency and cost-effectiveness of the networkin order to provide attractive services by reasonable payment,

• 3G has a much higher capacity than that of 2G. • A potential demand is observed in the increasing traffic.


DOCOMO provides various servicesover the 3G network and mobile devices.

ETWSETWSMeteorological Office

http://www.nttdocomo.co.jp/service/entertainment/1seg/index.html

http://www.nttdocomo.co.jp/service/entertainment/video_imotion/imotion_videoclip/index.html

http://www.nttdocomo.co.jp/service/entertainment/pocket_u/index.html

http://www.nttdocomo.co.jp/service/entertainment/iappli_online/index.html

http://www.nttdocomo.co.jp/service/entertainment/iappli_touch/index.html

http://www.nttdocomo.co.jp/service/entertainment/chaku_uta_full/index.html

http://www.nttdocomo.co.jp/service/entertainment/uta_houdai/index.html

http://www.nttdocomo.co.jp/service/customize/kisekae/index.html

http://www.nttdocomo.co.jp/service/communication/imode_mail/function/deco_mail/index.html

http://www.nttdocomo.co.jp/service/communication/imode_mail/function/decome_anime/index.html

http://www.nttdocomo.co.jp/service/safety/voiceinput_mail/index.html

http://www.nttdocomo.co.jp/service/communication/videophone/index.html

http://www.nttdocomo.co.jp/service/customize/iconcier/index.html

http://www.nttdocomo.co.jp/service/communication/2in1/index.html

http://www.nttdocomo.co.jp/service/information/index.html#p02

http://www.nttdocomo.co.jp/service/convenience/osaifu/index.html

http://www.nttdocomo.co.jp/service/world/roaming/outline/index.html

http://www.nttdocomo.co.jp/service/data/high_speed/index.html

http://www.nttdocomo.co.jp/service/data/high_speed/index.html

http://www.nttdocomo.co.jp/service/safety/areamail/index.html

http://www.nttdocomo.co.jp/service/entertainment/music_video_channel/index.html

http://www.nttdocomo.co.jp/english/product/index.html


ProductsProductsFeature phones


Smartphone LineupSmartphone Lineup6.00 million units of smartphones in FY2011

2011 Summer Models: 9 smartphone models

Android 2.38

models

Max. speed14Mbps 6

models

“Osaifu-Keitai” e-wallet 5

models

One-segment broadcasting

Waterproof 3

models

Tethering7

models

Infrared data exchange 6

model s

5models

GALAXY S IIMEDIASWP Xperia acro

AQUOS Phone

F-12C P-07C Optimus bright

AQUOS PHONE f

BlackBerry Bold 9780







end



１１GGAnalog

2G2GDigital

3G 3G IMT-2000

4G4GIMT-Advanced

19８０s 19９０s ２０00s ２０１０s

Voice centric

Voice and Data

High-speed data

Super high-speed data(100Mbps ～

1Gbps)

Evolution

Evolution of Mobile CommunicationsEvolution of Mobile Communications

(3.9G)(3.9G)LTELTE

Long-Term Evolution


Brand

LTE Service LTE Service ‘‘Xi (Xi (CrossyCrossy))’’

launched on December 24 2010

Maximum Downlink Speed

75Mbps37.5Mbps

UE Capability

100Mbps (Category 3)

(In case of 10MHz bandwidth)

(In case of 5MHz bandwidth)

Large Large CapacityCapacity

High High SpeedSpeed

Low Low LatencyLatency


Phased Area Deployment ofLTE Service ‘Xi’

Tokyo, Nagoya, Osakaat service launch

Prefectural capitals and similarly sized cities

Other major cities nationwide

within fiscal 2011

LTE: Xi CoverageLTE: Xi Coverage

Phased Area Deployment

TokyoOsaka Nagoya

within fiscal 201215,000 eNodeBs in FY201235,000 eNodeBs in FY2014


LTE: Xi ProductLTE: Xi Product

Ｘｉ

Data Terminal at launch

LTE/HSPA/W-CDMA /GSM/GPRS

Ｌ-０２Ｃ

On sale now (December 24, 2010)

Ｆ-０６Ｃ

USB data terminal for LTE World’s first ExpressCard-type data terminal for LTE

LTE/HSPA/W-CDMA /GSM/GPRS

On sale now (April 30,2011)

Ｌ-０９Ｃ

Mobile WiFi router

On sale now (June 30,2011)

LTE/HSPA/W-CDMA


LTE: Xi Product Lineup EnrichmentLTE: Xi Product Lineup Enrichment

FY2010 FY20111Q

FY20112Q

FY20113Q or beyond

Xi SmartphoneWinter 2011

Xi SmartphoneWinter 2011

1 Million(Planned)

15 Million(Target)

FY2010 FY2011 FY2014〜〜No. of subs

Further enrichment

Further enrichment

As of Mar. 20110.026 Million

Xi TabletAutumn 2011

Xi TabletAutumn 2011

Xi WiFi RouterSummer 2011

Xi WiFi RouterSummer 2011

Dec. 24,2010 Apr. 30,

2011

Jun. 30,2011

料金

As of Aug. 20110.296Million

LTE Tablet will be available soon







end



0

20

40

60

80

100

120

140

160

180

200

Jul.

Oct. Jan

Apr. Jul.

Oct. Jan

Apr. Jul.

Oct. Jan

Apr. Jul.

Oct. Jan

Apr. Jul.

Oct. Jan

Apr. Jul.

Oct. Jan

Apr.

WW--CDMA Operators in the WorldCDMA Operators in the World

HSD

PA

Num

ber o

f ope

rato

rs

2004200320022001 2005 2006 2007

•Smooth path to the next generation was essential from business point of view.

• Introduction timing is very important.


““DOCOMODOCOMO’’ss Change and Challenge to Achieve New GrowthChange and Challenge to Achieve New Growth”” 31 October, 200831 October, 2008

One of the First Group in the worldCEO Mr. YamadaONOE


TeliaSonera first in the world with 4G (LTE)

TeliaSonera first in the world with 4G (LTE)=LTE

Dec. 14, 2009


2009 2010 2011 2012日

本

海外

LTE Global StatusLTE Global StatusThe leading operators planned LTE launches in around 2010.They carried out the plans as scheduled or an ahead of schedule.

LTE launch planning

Wor

ldJa

pan

achievements

http://www.vodafone.com/

http://www.telstra.com/

http://www.att.com/

http://www.nttdocomo.com/

http://www.francetelecom.com/

http://www.teliasonera.com/


http://www.telecomitalia.com/

http://www.vodafone.cz/index_en.htm

http://www.mtsgsm.com/

http://www.google.co.jp/imgres?imgurl=http://telecomarketing.files.wordpress.com/2011/05/singapore-m1.jpg&imgrefurl=http://telecomarketing.wordpress.com/2011/05/04/singapore-m1-logo/&usg=__OH6JPG9SpTS69PF1H_RL1psJyNY=&h=480&w=480&sz=14&hl=ja&start=9&zoom=1&tbnid=L0cl-MEwmeRTaM:&tbnh=129&tbnw=129&ei=ZNEPTpeRMYiImQWHxK3LDg&prev=/search%3Fq%3Dm1%2Bsingapore%2Blogo%26hl%3Dja%26sa%3DX%26rlz%3D1T4ADFA_jaJP359JP359%26tbm%3Disch%26prmd%3Divns&itbs=1


0

20

40

60

80

100

120

140

160

180

200

.Sep.Dec.Mar. Ju

n..Sep.Dec.Mar. Ju

n..Sep.Dec.Mar. Ju

n..Sep.Dec.Mar. Ju

n..Sep.Dec.Mar. Ju

n..Sep.Dec.Mar. Ju

n.

Num

ber o

f ope

rato

rs

2004200320022001 2005 2006 2007

2012201120102009 2013 2014 2015

3G3G:W:W--CDMACDMA

LTELTE

http://www.nttdocomo.com/



http://www.teliasonera.com/media/image-bank/our-logo/


System Deployment ScenarioSystem Deployment Scenario

2001 2010s 2015-Ultimate status

After 2020s

LTE-A

4G S

pect

rum

(A n

ew IM

TS

pect

rum

)

2G

LTE

3G3G S

pect

rum

(IMT

Spe

ctru

m)

PDC

LTE/LTE-A

Spectrum UseSpectrum Use

Efficient use of 3G spectrum for a long time

1Gbps services with broad spectrum allocation

At the LTE launch,DOCOMO launched LTE with 5-10MHz bandwidth in 2.1GHz band.A new spectrum, 1.5GHz band with 15MHz bandwidth, will be used in 2012. Others(800MHz,1.7GHz) will be also used for LTE.

The LTE spectrum will be expanded according to the spread of LTE UEs for a long timeframe.

At the LTE launch,DOCOMO launched LTE with 5-10MHz bandwidth in 2.1GHz band.A new spectrum, 1.5GHz band with 15MHz bandwidth, will be used in 2012. Others(800MHz,1.7GHz) will be also used for LTE.

The LTE spectrum will be expanded according to the spread of LTE UEs for a long timeframe.

•We can reuse the assets of nationwide base sites such as antennas.

•2.1GHz is favorable from global roaming point of view.

•UEs have 2.1GHz RF parts.

Spectrum fragmentation is a challenge for LTE.Europe：2.6GHz band, 800MHz band, 1.8GHz bandUS：700MHz band, AWS band(1.7GHz/2.1GHz)Japan：1.5GHz, 1.7GHz, 2.1GHz, 800MHz band

Let’s use the existing spectrum for LTE!


NodeB

CPRI

RRE

Antenna

Optical fiberOptical fiber

2.1GHz

RemoteRadio Equipment

(Base Band Unit)

RRE launch in 2004DOCOMO’s Network

Typical 3G radio network configuration in DOCOMORemote radio heads are used widely in DOCOMO's network.

NodeB

CPRI

RRE

Antenna

Remote Radio Equipment for LTE and 3G


2.1GHz

(Base Band Unit)

eNodeBeNodeB Deployment Scenario with Deployment Scenario with Remote HeadsRemote Heads

All IP Network All IP

NetworkEPC

NodeB

CPRI/OBRI/ORI

RRE

eNodeB

Antenna


2.1GHz

Common spectrum 2.1GHz band used for LTE and UMTS

Remote Radio Equipment for LTE and 3G

(Base Band Unit)

Commercial launch in 2009

Commercial launch in 2010

3G LTE

f

/OBRI/ORI

photo


Downlink Throughput with 5MHz Bandwidth Uplink

LTE Performance in OutdoorLTE Performance in Outdoor

Average Throughputthorough the course 6.78Mbps

Maximum Throughputin the course 26.64Mbps

Max. in specifications 37.5Mbps

500m

Site2

Site5

Site1 Site3

Site4

= 0 bps <5Mbps 5Mbps<

10Mbps< 15Mbps< 20Mbps<


Indoor CoverageIndoor CoverageBefore LTE launch

Indoor Coverage RoF System

NodeB

E/O

O/E

antennas

O/E

O/E O/E

3G

f

3G

fNodeB

Optical fibers

LRE

NodeBeNodeB

LRE E/O

O/E O/E

O/E O/E

3G LTE

f

3G LTE

f

withoutMIMO

After LTE launch without MIMOTo use the system as it is

NodeB/ eNodeB


To use fiber wiring as it is

NodeBeNodeB

LRE

LRE

NodeBeNodeB

LRE

導入前

MIMO無

MIMO有

追い張り

After LTE launch with MIMO

O/E O/E

O/E O/E

NodeBeNodeB

LRE E/O

3G LTE

f

3G LTE

f

To change the system to new one

WDMPolarization

Antennas

NodeB/ eNodeB


To use fiber wiring as it is

withMIMO


13,500 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,40083,200

男子便所

倉庫１

システム機械室

プレゼンテーションホール準備室

展示室

風除室

エントランスホール

打合せコーナー

倉庫

倉庫

１

２

廊下

喫煙室

健康管理室

給湯室

相談室

女子便所

（PS）

Downlink Throughput (Average)

50m

39Mbps

46Mbps 39Mbps

41Mbps

30Mbps

34Mbps

36Mbps23Mbps

22Mbps23Mbps

22Mbps

20Mbps

35Mbps

50Mbps

13,500 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,400 6,40083,200

男子便所

倉庫１

システム機械室

プレゼンテーションホール準備室

展示室

風除室

エントランスホール

打合せコーナー

倉庫

倉庫

１

２

廊下

喫煙室

健康管理室

給湯室

相談室

女子便所

（PS）

50m

49Mbps

49Mbps 49Mbps

49Mbps

42Mbps

40Mbps

40Mbps42Mbps

48Mbps38Mbps

20Mbps

26Mbps

39Mbps

51Mbps

50 Mbps <40 Mbps <30 Mbps <20 Mbps <

Downlink Throughput (Maximum)LTE Performance in Indoor LTE Performance in Indoor

with 10MHz Bandwidth

DOCOMO R&D CenterBldg. #1 1st Floor in Yokosuka

details

with MIMO







end



History of 4G ResearchHistory of 4G Research

Oct. 2002: 100Mbps data in LaboratoryMay 2003: 100Mbps data in Field TestAug. 2004: 1Gbps data in LaboratoryMay 2005: 1Gbps data in Field TestDec. 2005: 2.5Gbps dataDec. 2006: 5Gbps data

100 MHz

Mobility High Low Low

Data rate 100 Mbps(1 bits/sec/Hz)

1 Gbps(10 bits/sec/Hz)

2.5～5Gbps(25～50bits/sec/Hz)

History


LTE Development HistoryLTE Development History

1 Q

2 Q

4 Q

3 Q

20062 Q

4 Q

3 Q

2 Q

4 Q

3 Q

1 Q

20081 Q

20092 Q

3 Q

201120101 Q

2 Q

1 Q

1 Q

4 Q

2 Q

20074 Q

3 Q

4 Q

3 Q

CommercialService

Tokyo

▲LTE Launch

▲RFP

▲ ▲ ▲ ▲

Core specs Test specs

Experimental SystemDevelopment

Indoor/FieldTest & Demo

C Y 1

Q2 Q

4 Q

3 Q

20051 Q

2 Q

4 Q

3 Q

20044 Q

20 03

Pre-Launch

Operation

RRE commercial launch

3GPP3GPPStandardizationStandardization

Conceptproposal

▲Launch

▲RFP

StandardizationStandardization

ExperimentsExperiments

CommercialSystemDevelopment


CommercialOperationCommercialOperation

▲StudyItem ▲

WorkItem

▲RFP

Field Test

Lab TestDevelopment


March 28, 2008 DoCoMo / Seizo ONOE 28Copyright© 2008 NTT DoCoMo, Inc. All rights reserved26th May 2004, ICB3G

migration to migration to ４４GGNOW

3G Evolution

4G Launch

3G

(2010s）

3G

3G

4G 4G

3G

3G４Ｇ

3G４Ｇ

3G 3G 3G4GSuper3G Super 3G

４Ｇ

Super 3G

Scenario 2:

Maximize existing

3G NW assets in

building 4G

Scenario 3:

First evolve 3G, then build 4G on top

Scenario 1:

Independent 4G system

26th May 2004, ICB3G

Ideas on migration to 4G (3)Ideas on migration to 4G (3)

NOW 4G Evolution4G Launch

Scenario 3 ： First evolve 3G, then build 4G on top→ Extensibility is greater than Scenario2

→Cost is lower than Scenario1

(Innovative 4G evolution possible)

3G Evolution

3G 3G3G

4GＳｕｐｅｒ3G Ｓｕｐｅｒ3G

４Ｇ

Ｓｕｐｅｒ3G

※Ｓｕｐｅｒ3Ｇ： The name ｏｆ Enhanced3G called in DoCoMo

(2010s）

Super3G conceptSuper3G concept

In an International Conference in 2004, DoCoMo presented Super3G concept.

In an International Conference in 2004, DoCoMo presented Super3G concept.

26th May 2004, ICB3G


3G Spectrum

4G Spectrum

Super 3G (3.9G) Super 3G (3.9G) High-level Objectives

To ensure the continuous and long- term growth of the mobile communication industry

To maintain the competitiveness of 3G even in the 4G era To provide a smooth path to 4G introduction

=LTE =LTE

3GPP Specs

2000 2005 2010 2015

HSDPA

R99

4G

HSPA

Super 3G

4G

S3G

Smooth introduction

of 4G

Long-term evolution of 3G

R99

HSDPA

HSPA

LTE

LTE-A

• Providing a smooth path toward 4G was DOCOMO’s original motivation for Super3G（LTE) in 2004.

• In 2008, 3GPP started IMT-Advanced study and TR 36.913 stated “LTE- Advanced is an evolution of LTE.”

LTE promises an evolution path toward a true 4G / LTE-Advanced.

http://www.3gpp.org/../article/lte-advanced


System deployment scenario

LTE/LTE-A3G

f

All IP Network All IP

NetworkEPC

LTELTE--A introduction scenario exampleA introduction scenario example

NodeB

2.1GHz/800MHz

3G

fRRERRE 2.1GHz

eNodeB

LTE-A introductionLTE-A introduction

LTE/LTE-A

To share RF carriers between LTE and LTE-A

To share RF carriers between LTE and LTE-A

for 3G for LTE

Base Band UnitRF Unitfor 3G/LTE/LTE-A

RF Unit:To use as it is

Base Band Unit:Software upgrade for minor functions

RF Unit:To use as it is

Base Band Unit:Software upgrade for minor functions

CarrierAggregation

800MHz

Add a new band


LTELTE--Advanced Experiments in DOCOMOAdvanced Experiments in DOCOMO

32

DOCOMO developed experimental system aligned with 3GPP Rel.10 specs.Laboratory experimentsTotal throughput of 1Gbps in downlink and 200Mbps in

uplink achieved (4x2 MU-MIMO for DL, 2 Mobile stations)Field experimentsThroughput of 600Mbps in downlink and 200Mbps in

uplink achieved (2x2 SU-MIMO)

Base station

Mobile station

◆ Field @ Yokosuka, Japan◆ Laboratory

LTE-Advanced key technologies, e.g., carrier aggregation and enhanced MIMO

Hills

A

100 m 200 m 300 m 400 m

B

NTT DOCOMO

R&D Center

Mobile station• Tx Power: 2 W• Antenna: 2Tx/Rx• UL Bandwidth: 40 MHz

Base station• Tx power: 20W• Antenna: 4 Tx/Rx • DL Bandwidth:

100MHz







end


34

Restoration Status of Service Areas

As of Mar. 12, 2011 As of Apr. 30, 2011

Service disrupted at 4,900 base stations

Restored to nearly pre-disaster level

Servicedisrupted

Serviceavailable

FukushimaPower Plant

#1


New Disaster Preparedness Measures

Further improvement of customer convenience in disasters

Securing communication in key areas

Swift response to disaster-stricken areas

Deploy large-zone base stations across Japan (approx. 100 locations)

Swift provision of satellite mobile phones (3,000 units)

Development of disaster voice message service

1

2

3

5

4

6

7

8

9

10

Promote use of uninterruptible power supply systems and ensure 24-hour autonomous power supply in base stations (Approx. 1,900 stations)

Quick construction of service areas using satellite system

Flexible area construction using microwave entrance circuits (100 sections)

Enrichment of “Restoration Area Maps”

Support of voice guidance in “Disaster Message Board” service for improved ease of use

Further utilization of “Area Mail”

Further utilization of ICT through convergence with SNS, etc.

New Disaster Preparedness MeasuresNew Disaster Preparedness Measures


SummarySummaryMobile Market Trends

Data explosion is the common issue to all mobile operators in the world.The popularization of smartphones is accelerating the trends.

DOCOMO’s LTE launch and service ‘Xi’DOCOMO launched LTE service ‘Xi’ (crossy) on 24 Dec. 2010 as one of the first group of operators in the world.Performance in commercial network satisfies the original expectations.

Further evolution to true 4G/LTE-AdvancedLTE provides a smooth path to a true 4G, as DOCOMO originally thought with Super3G concept.

end



LTE History and Plan of DOCOMOLTE History and Plan of DOCOMO

1 Q

2 Q

4 Q

3 Q

20062 Q

4 Q

3 Q

2 Q

4 Q

3 Q

1 Q

20081 Q

20092 Q

3 Q

201120101 Q

2 Q

1 Q

1 Q

4 Q

2 Q

20074 Q

3 Q

4 Q

3 Q

CommercialService

Tokyo

▲LTE Launch

▲RFP

▲ ▲ ▲ ▲

Core specs Test specs

Experimental SystemDevelopment

Indoor/FieldTest & Demo

C Y 1

Q2 Q

4 Q

3 Q

20051 Q

2 Q

4 Q

3 Q

20044 Q

2003

Pre-Launch

Operation

RRE commercial launch

3GPP3GPPStandardizationStandardization

Conceptproposal

▲Launch

▲RFP

StandardizationStandardization

ExperimentsExperiments



CommercialOperationCommercialOperation

▲StudyItem ▲

WorkItem

▲RFP

Field Test

Lab TestDevelopment

Mar. 8, 2004

In early 2004, DOCOMO assumed that 3GPP would start the study itemin December 2004 and approve specs in 2007 and technology development by 2009.

A Slide used for initiating Super3G standardizationin a meeting with an influential vender

A Slide used for initiating Super3G standardizationin a meeting with an influential vender

A Slide used for initiating Super3G standardizationin a bilateral meeting

A Slide used for initiating Super3G standardizationin a bilateral meeting


DOCOMODOCOMO’’ss 2020 Vision 2020 Vision ““HEARTHEART””

Vision for 2020

2000－2009 2010－2020

In the past decade, we have been pursuing the possibilities of mobile

This decade, we will evolve into an “integrated service company”

with mobile at its core

Documents

Smart Korea 2011 Asia's IT Future and role in the Smart eraitfind.or.kr/smartkorea/2011/creative_06.pdf · · 2011-11-02Typical 3G radio network configuration in DOCOMO. Remote