FemtocellFemtocell SolutioSolutioFemtocell Femtocell SolutioSolutioof SoftBanof SoftBan

18 Februa

YOSHIHITOYOSHIHITOYOSHIHITO YOSHIHITO Deputy Div

NetworkNetwork SoftBank Mobil

n and Deploymentn and Deploymentn and Deployment n and Deployment nk Mobilenk Mobileary, 2009

SHIMAZAKISHIMAZAKISHIMAZAKISHIMAZAKIision Head.DivisionDivisione Corporation.,

History of Business ExpansHistory of Business Expans

Merger of Vodafone Japan Mobile Phone Subscribers:15M Vodafone

2004

15M2

ADSL Broadband ServiceDomestic Share #1

2004

Domestic Share #1

1996

19Starts Publication

Business

JapaStarts

19

Startsfor P

1981

sionsion

Merger of Japan Telecom

2006 Total 33 mil.Merger of Japan TelecomFixed Line Subscribers: 7.5M

*As of 2004

2001

Capital Investment in Yahoo!Launches Yahoo! Japan

982n SoftBank Corp. Establisheds Distribution Business of Packaged Software

982

2

s Distribution Business of Packaged SoftwarePC

Group Synergy EffectsGroup Synergy Effects

SoftBank GroupSoftBank Group111 C i111 C i111 Companies111 Companies

Broadband

Mobile

d Fixed Line

3

SoftBank Group NetworkSoftBank Group Network

080/090Number

3G/WLAN

3G Handset

3G/WLANDual mode Handset

FemtoRNCRNC

SoftBN080/090Number

xDSL/FTTH

Femto N

SoftBank TeNetwor

080/090NumberFMC Yahoo!

xDSL/FTTH

PSTNPSTN

Internet

MSCMSC

GGSNGGSN

HLRHLR

Bank MobileN t k GGSNGGSN

SGSNSGSN HSSHSS MGWMGW SGWSGW

Network

MGCFMGCF

IMS Networkelecomrk

AAAAAA

CSCFCSCFMGCFMGCF

BB NetworkFemto GWFemto GW

(PDG)(PDG)

Internet

4

Quarter Based Net IncreaseQuarter Based Net IncreaseNet Inc

docomo3

100%

docomo3

KD6

80%

6.MNP

60%

40%

do

SoftB

20%do

KD

0%

Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Vodafone

-20%FY2005 FY2006 FY2007 FY2008

RateRatecrease Rate of Share(09/01)

32.6%32.6%

61.2%DDI4%

No 1

61.2%4%* w/o EMOBILE

No.1 over the past 21 months in a row!!

ocomo

Bank

ocomo

DDI

4

5

Source: Telecommunications Carrier Association (TCA)

3G Subscription Rate3G Subscription Rate

2,000

2,20022

20

(M)

2G+3G Total

1,800

,

18

1,400

1,60016

142G(PDC)

1 000

1,20012

10Vodafone

800

1,00010

8 3G Subscribers :18%

400

6006

4

0

2002

0３Ｇ Users

0MarchSepMarchSepMarchSepMarchSep 3

0March Sep March Sep March Sep March Sep M

2004 2005 2006 20072008

20.12

17.57

3G Users ：17.57M3G Ratio ：87.3%

*As of 2009/01

Source: Telecommunications Carrier Association (TCA)

63月 9月

March Sep

3G Penetration in JAPAN3G Penetration in JAPAN

Extremely High pe

100%100%

y g p

2G2G

2G2G100%100%

2G2G

3G3G80%80%

50%50%

3G3G60%60%

80%80%

0%0%20062006 20072007

enetration of 3G

2G2G2G2G 2G2G

Still Growth!!

3G3G90%90%

3G3G9N%9N%90%90% 9N%9N%

S TCA

7

20082008 Source: TCA20092009

IMS Femto ComA hiArchi

mmercial Network it titecture

8

SoftBank’s Selected ArchiteSoftBank’s Selected Archite

PLMN/PSTNPLMN/PSTN

FFSGSNSGSN GGSNGGSNMSCMSC

PLMN/PSTNPLMN/PSTN

Macro CoreMacro Core

RNCRNC

HLRHLR

O&MO&M

RNCRNC

SDH RingSDH Ring

ConfigurationConfigurationProvisioProvisio

IP BacIP Bac

O&MO&MSDH RingSDH Ring

Macro AreaMacro Area

xDSLxDSLAccessAccess

FemtFemtFemto APFemto APFemto APFemto AP

ectureecture

GG

Official SitesOfficial Sites

Femto CoreFemto Core(IMS)(IMS)

WAP GWWAP GWNonNon--official official

SitesSites(IMS)(IMS)

FemtoFemtoGWGW

(PDG)(PDG)

InternetInternet

RadiusRadius

DNS/DHCPDNS/DHCP(PDG)(PDG)ningning

ckboneckbone

RadiusRadius

L/FTTH L/FTTH s Networks Network

o APo APFemto APFemto AP

WiFi APWiFi AP

9

IMS Femto Core NetworkIMS Femto Core Network

3G Core Network

SMSC SGVMS

MSCSGMSCS SGOtherOtherPOTS/PLMNPOTS/PLMN

3G-MGW ETSI-WAP GW

3G-MGW

HLR/FNR SG

GGSN SGSNGi-Router

InternetInternet

Gi Router

3G RANC Plan

U Pl

RNCSDH RingU Plan

IMS Femto Core Network

IP-SM-GWGW TAS

P/S/I-CSCFMGCFGW

IM-MGW-CNV

HSS/AAAGWMRF

Femto GW(PDG）GW(PDG）

Femto Network

10

IP BackboneIP Backbone

Integrating with Existing NWIntegrating with Existing NW

ISUP

I/FI/F

VMS MSCS

3G MGW

ISUP

STM

MG

IM3G-MGW

HLR/FNRMAP

MAPIM-

HSSHLR/FNRDia

MAPHSS

A

SMSC

DiMAP

IM-S

GGSN

SGSN

3G Core Network

WW

MRFSIP

SIP

SIP

RTP

GCF

MGW I/S-CSCF

P CSCF

TASSIP

RTP

Diameter

-MGW

S (VLR) P-CSCF

Femto GW

SIPDiameter

ameter

S (VLR)

AAAameter

SIP

SM-GW

Femto AP

11

IMS Femto Core Network

SBM Network Centre SBM Network Centre -- IMS FeIMS Fe

FemIMS Femto Core Fem(

emto Core emto Core --

CSCFCSCF

mto GW

12

mto GWPDG)

Area QualityFi ld-Field

y EvaluationT i l Trial-

13

Area Coverage Quality ChecArea Coverage Quality Chec

Commercially Licensed Femto AP Deployment

SoftBank Internal Employee SoftBank Internal Employee Trial Conducted in Tokyo Trial Conducted in Tokyo Metropolis and 3 PrefecturesMetropolis and 3 Prefectures

YahooYahooIP BacIP Bac

pp

SourceSource：：http://www.craftmap.boxhttp://www.craftmap.box--i.net/i.net/

Items Confirmed- Checked the indoor coverage area field str

l l (+10dB d 5dB )power levels (+10dBm and -5dBm)- Checked performance of the automatic trathe RF field strength of the macro network

ckscks

IMS CoreIMS Core

InternetInternet

SoftBankSoftBank Network CentreNetwork Centre

o!o! BBBBckboneckbone

Femto GWFemto GW(PDG)(PDG) SoftBankSoftBank

MobileMobile3G Core3G Core3G Core3G Core

SBTM/NTT/KDDISBTM/NTT/KDDIPSTNPSTN

docomo/KDDIdocomo/KDDIPLMNPLMN

rength and the outside leakage at 2 transmit

nsmit power adaptation function in relation to

14

Equipment UsedEquipment Used

Femto AP

Test UE

ADSLADSL Modem

15

Indoor Measurement Result-Areas with Weak Macro Coverage with Wood Made

Area with Weak Coverage：Below-95dBm

RSCP Femto Tx -5dBm

- 5 0

- 4 0

Femto

- 7 0

- 6 0Femto

- 9 0

- 8 0

M- 1 0 0① ② ③ ④ ⑤

Macro

In one area, the Femtocell is weak

tsBuilding-

③

①②④⑤

RSCP Femto Tx ＋10dBm

- 5 0

- 4 0

Femto

- 7 0

- 6 0

- 9 0

- 8 0

- 1 0 0⑤ ① ② ③ ④ ⑤

16 The Femtocell is dominant

Outdoor Measurement Resu-Areas with Weak Macro Coverage with Wood Made

Testing to check the extent of Femto RF leakage outside of buildings

- 4 0

Femto Tx -5dBm RSCP

- 6 0

- 5 0

- 8 0

- 7 0 MacroFemto

1 0 0

- 9 0

- 1 0 0① ② ③ ④ ⑤⑥ ⑦ ⑧ Some leakage outsideg Macro is dominant for the most part

ultsBuilding- ③

①②

③④

⑤⑥⑦ ⑤⑦

⑧

- 4 0

Femto Tx +10dBm RSCP

- 6 0

- 5 0

MFemto

- 8 0

- 7 0

Macro

1 0 0

- 9 0

8 0

- 1 0 0 ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ Leakage outside

17

5m from the building, macro isdominant

Area Coverage Quality Test Area Coverage Quality Test

Area coverage rate in the average Japtti f +10dB (CPICH 0dB )setting of +10dBm(CPICH : 0dBm)

Success rate of the transmit power con

Expected result： Higher transmit p

transmit power levels : over 91Expected result： Higher transmit p

Lower transmit p

Transmit power control algorithm settinTransmit power control algorithm settinJapanese home : -5dBm --- +

Transmit power range：Transmit power range：

The key is controll

B l i f t

transmit power

Balancing factoMaintaining good coverage

ConclusionsConclusions

panese home based upon a power ) over 95%) : over 95%ntrol algorithm in setting the expected

power in areas with strong macro coverage

%power in areas with strong macro coveragepower in areas with weak macro coverage

ng range required by the averageng range required by the average +10dBm： Necessary to conduct wider scale testing： Necessary to conduct wider scale testing

ing

18

orEffect on macro network

Call QualityFi ld-Field

y EvaluationT i l Trial-

19

Call Quality ChecksCall Quality Checks

Commercially Licensed Femto AP DeploymentADSLADSLADSLADSLDL: 1MbpsDL: 1MbpsUL: 1MbpsUL: 1Mbps

Femto APFemto AP ADSL ModemADSL ModemYahooYahooIP BacIP Bac

VQTVQTADSADSDL:DL:

Femto APFemto APADSL ModemADSL Modem

DL: DL: UL: UL:

Node BNode B

Items Confirmed- Call quality on an ADSL line （D

C d lit ith th t f th- Compared quality with that of th

InternetInternet

IMS CoreIMS CoreFemto GWFemto GW

(PDG)(PDG)

SoftBankSoftBank Network CentreNetwork Centressss

InternetInternet

(PDG)(PDG) SoftBankSoftBankMobileMobile

3G Core3G Coreo!o! BBBBckboneckbone

SBTM/NTT/KDDISBTM/NTT/KDDI docomo/KDDIdocomo/KDDISLSL1Mbps1Mbps SBTM/NTT/KDDISBTM/NTT/KDDI

PSTNPSTNdocomo/KDDIdocomo/KDDI

PLMNPLMN1Mbps1Mbps1Mbps1Mbps

RNCRNCADSL Link Speed is fixed to ADSL Link Speed is fixed to 1Mbps for both U/L and D/L1Mbps for both U/L and D/L

Delay, PESQ）h M N t k

20

he Macro Network

Call Quality Measurement RCall Quality Measurement R

Table1. Call Quality Measu

Voice Delay (ms)

Femto <-> Femto 286

Macro <-> Macro 199.5

F ll ithi th F t For calls within the FemtoCall quality is as good as

Table2 Call Quality Measurement Res

Voice Delay (ms)

Table2. Call Quality Measurement Res

F to M M to F

Femto <-> Macro 251 300

For Femto Macro calls,PESQ is as good as the macPESQ is as good as the macDelay in voice calls is almost

ResultsResults

PESQ PESQ

rement Results (Between Femto)

PESQ（male voice agja3m01.wav）

PESQ(female voice agja3f01.wav)

2.95 2.69

2.78 2.52

t ko network,for the macro network

sults (Between Femto and Macro)

PESQ(male voiceagja3m01 wav)

PESQ(female voice agja3f01 wav)

sults (Between Femto and Macro)

(male voiceagja3m01.wav) (female voice agja3f01.wav)

F to M M to F F to M M to F

2.87 2.81 2.59 2.56

cro network

21

cro networkt good, the adjustment is being executed

Transmission Line Between FemtocelTransmission Line Between Femtocel

Y!BBY!BB NetworkNetwork

AP-side Jitter Buffer

RNCNode-B

Solution to Delay ChallengeFinding the right Jitter Buffer value to

l and Macro Networkl and Macro Network

IMS NetworkIMS NetworkMGW-side Jitter Buffer

PDG IM-MGWkk

300ms 251ms

MGWMSC

Macro Network

o improve call quality (delay)

22

Regulatory barg y rriers overcome

23

Process of Japan RegulatorProcess of Japan Regulator06/02/2008 Draft idea of “Handling Policy for t

to the Radio Law, the TelecommunicationHandling Policy”)” had proposed by MIC.

07/02 -10/03/2008 Acceptance period of publi17/04/2008 A t f “FAP H dli17/04/2008 Announcement of “FAP Handling

the Radio Law ththe Radio Law thMay –Jun./2008

the Diet discussions on the possible revision of the Radio Law

23Ju

09/07/2008 The inquiry at the Radio Regulatory Council

09/07/2008 Acceptance period of public comment on 2409/07/2008 –Aug./2008

Acceptance period of public comment on possible revision of the Radio Law

24-21

03/09/2008 Announcement of the result of public comment

0218/09/2008 revision of the Radio Law will be

published on an official gazette

01/10/2008 Enforcement of the Radio Law and related ministerial ordinances

10

MIC：Min

ryry (Overview)(Overview)

the Utilization of Femtocell Base Stations with regard ns Business Law and Related Ordinances (”FAP

c comment on the “FAP Handling Policy”P li ”Policy”

he Telecommunications Business Lawhe Telecommunications Business Law3/04 –ul./2008

Actualization study in view of their standard handling at Next Generation IP Network Promotion Forum Fixed Mobile seamlessPromotion Forum Fixed-Mobile seamless SWG(NGNPF-FMS), the sharing of responsibility modeling WG

4/10/2008 Acceptance period of public comment on the4/10/2008

1/11/2008

Acceptance period of public comment on the revised “Handling Guidelines for the Telecommunications Business Law and ordinances relevant to Femtocell Base Stations”

2/12/2008 Announcement of “MIC Guidelines for the Telecommunications Business Law and ordinances relevant to Femtocell Base Stations”

0/12/2008 Announcement of “Handling Guidelines for the Telecommunications Business Law and ordinances relevant to Femtocell Base Stations”

24nistry of Internal Affairs and Communications

Process of Japan RegulatoryProcess of Japan Regulatory (O(O

the Telecommunications Business Law

Broad Band Line (xDSL, FTTH) can be used Following items are contracted out for indoor Following items are contracted out for indoor

Spare Equipment Earthquake Protection Action of electrical Outage (Battery)g ( y)

the Radio Law

Unlicensed Staff can do simple operation of i Simplified radio license application for indoor

(Omission of Antenna LNG Lat Altitude Ab(Omission of Antenna LNG, Lat, Altitude Ab

Overview)Overview)

for indoor Femto cell Back holeFemto cellFemto cell

ndoor Femto cell (Relocation, Recovery)r Femto cellbove sea level and Ground Height )bove sea level, and Ground Height.)

25

Definition of “Femtocell” in JA

Femtocell is absolutely a baby “Ordinance Regulating Radio Eqby Ordinance Regulating Radio Eq

Should be approved by engineering sta

Antennas:Output Power : <= 20mWT it t i 2dBTransmit antenna gain : <=2dB Others : should no

Should be in one box and difficult to opeShould be in one box and difficult to ope

Having a function to detect fault in Femradio transmission.-Having a function to stop radio transmiis not possible to establish connection v

Femtocell base stations are exclusi= Femtocell base stations a

PAN

ase station, and defined quipment” as following conditionsquipment as following conditions

andards of radio facilities

W

ot be removed easily

enen

mtocell and a function to stop

ission automatically if itvia communication line

ion of application for “handover” are not for extend “area*1”

26

*red box: newly added law by latest revision

Why SoftBank ChoF t ll AFemtocell A

ose an IMS-BasedA hit t ?Architecture?

27

SoftBank’s Current SolutionSoftBank’s Current Solution

Various Indoor Base Station Types

Micro, PicoCells

Indoor MacroCells FemtocellsCellsCells

Indoor StrategyIndoor Strategy

nn

B ildiBuildings Towerss

Outdoor Macro CellsRepeater Outdoor Macro Cellsp

28

Network Strategy Network Strategy (Coverage)(Coverage)

Indoor Coverage is Extremely Importa

Situation Regarding Indoor RelatedSituation Regarding Indoor Related

3G Area Coverage Satisfaction Survey (from J

Indoor Complaints 79.4

0 20 400 20 40

Percent of Comp

ant to Maintain Customer Satisfaction

StrengtheningIndoor Coveraged Complaints Indoor Coveraged Complaints

anuary to September,’08)Vehicle

Outdoor

Vehicle2.9%

4%Outdoor

Complaints17.7%

60 80 10060 80 100

plaints(%)<Source> SoftBank Internal Documents

29

Existing Indoor SolutionsExisting Indoor Solutions

Where UsedWhere Used

HomeHome

ICS ICS ReRe

Small Store LocationsSmall Store Locations

Large Store LocationsLarge Store Locations

Solution TypeSolution Type

RepeaterRepeaterRepeaterRepeater

epeaterepeater RF RF RepeaterRepeater

PICO CellPICO CellRRH/RRURRH/RRU

30

Network Strategy Network Strategy (Capacity)(Capacity)

Home repeaters are effective for extenfor increasing capacityfor increasing capacity

Femtocell and Repeate

Femtocell

Capacity Better

nding coverage, but Femtocells are best

er Comparison

Repeater

-

31

Network Strategy Network Strategy (High Speed)(High Speed)

Using the Femto to offload the massiveRealization of a high-speed network baRealization of a high speed network ba

the feeling that they have a whole netw

User-to-Network ratio of 1:1

Existing 3G Core Network Femto

User-to-Network ratio of 1:1

SDH RiY!BB/S

Existing 3G Core Network Femto

SDH RingA

Mobile broadbausing br

ely expanding traffic to the fixed line networkased upon the idea that of giving customersased upon the idea that of giving customers work to themselves

IP Core Network

SBTM IP Backbone

IP Core Network

High Speed

xDSL/FTTH Access Network

Fast, expansive and highFast, expansive and highquality service

and environment for each user, roadband lines at home

32

FemtoFemto StrategyStrategy (From Network Str(From Network Str

SoftBank's Net Subscriber Acquisitions and Network Usage

3G Packet

-> Effect on Network Capacity

raffic

Tr

Time

Phase.1Phase.1

rategy to New Business)rategy to New Business)

2 Phase Femtocell Strategy

An important element in the NGN architecture->New business creation

33Phase.Phase.２２

Keywords for Creating NewKeywords for Creating New

Femtocell Camp-On/Off

Keyword 1

LoPu

Keyw

Femtocells will becomeFemtocells will become for Mobile

w Business Areasw Business Areas

Local Information

Keyword 2

ocalush

word 3

a New Revenue Driver34

a New Revenue DriverOperators

The World of the Femtocell The World of the Femtocell

Creating a bridge betw

ASPASPASPASP

Company C Company D

Company CServiceOffering

Company DServiceOffering

Company CSecurity Service

Company DAdvertising

Delivery Service OSGiOSGi FF

HomeHome

NetworkNetwork

een users and ASPs！

ASPASPASPASP

Company A Company B

Company AServiceOffering

Company BServiceOffering

Company AMobile Gaming Service

Company BHealth-Related ServiceFrameworkFramework

ShopsShops

35

Femtocell Service Example:

KeyworKeyworKeyword 1Keyword 1

Out and About Checking on t

おでかけ安⼼

Front Door

Living Room Window

Bedroom Window

When out house

Living Room Camera

Heater

Washing Machine

Stove

Back OK

: Outside the Home

rd 2rd 2 Keyword 3Keyword 3

the home Mobile Notification

ServiceServiceＡＡof the …

ＡＡ

36

An Open System Made PossAn Open System Made Poss

Supports a wide-ranvarious mvarious m

xSP

Wide-RangPartic

相互協⼒関係

xSPEnterprises Si

Operオープ

Realization of a fair h i An interfa

makes it eabusine

revenue sharing approach

SoftBank Fem

sible by the Femtocellsible by the Femtocell

nge of needs for the arket playersarket players

Content

ging Industry cipation

次世代テクノロジー

ite rators

Local Authorities

Providers

プン化テク

Offering a highly reliable network and aace that

asy to do ess

network and acutting-edge platform

mtocell Platform

37

The Map of Business ModelThe Map of Business Model

3 d P

“FemtoCell Creates New3rd P

EvHealth Care

Recommend

Information

IN HOME

Movie

Art

CareTV

En

Information

HomeSecurity

Elder-Care

Traffic

Weather

HomeMonitoring

Game

EnvironmentTraffic

OUTDOOR

PERSONALDi

SigLocation

Lifelog

Entertainment

Address

Location Info

Education

InformationLocation

PERSONAL HOME TOWN

P t

w EcoSystem” on the SFPParty

vent

SHOPPINGt

ntertainment

Shop

GourmetCafe

CommunityCoupon Wishlist

ShoppingMall

Restaurant

COMMUNICATION

BUSINESS

GroupWare

igital gnage

Phone Public Service

BUSINESSSUPPORT IP

PhoneLocationCommerceAdvertising

38BUSINESS SOCIETY

Schedule Status

June 2008・Start of SoftBank Internal Trial

1Q 2・Fe

Changes to the Domestic Regulations

Telecommunications Business Law・ Enumerated in the Femtocell Usage Guid・ Enumerated in the Operational Guidelines

Smooth Femto-Based Mobile Phone ServRadio Law (Planned Effective Date Oct. 1st)・ Revision of the Japan Radio Law・ Revision of the Radio Law Enforcement R・ Revision of the RF Licensing Procedure R

009mto AP Deployment

Trial

deliness to Ensureice Offerings

Regulations

39

Regulations

ConclusionConclusion

Trial Commercial IMS-Flat Network

Process of Japan Regul

Application Service Trial ConductApplication Service Trial Conduct

k was launched from January 2009

latory was done in 2008

ted with OSGi Platform from Nowted with OSGi Platform from Now

40

Thannk You

41

Appeppendix

42

In the case of Macro 1RF

In the case of Macro 1RF w/ Fe

Frequency A

Subscribed User

Frequency AUnsubscribed User

Macro-Freq. A (only 1carrier)Femto-Freq. A

White Spot created for unregistered user

To avoid White Spot for unregistereto Femto Cell.

Need to consider how to make Sub

emto Access Control Operation

Frequency AGood!!

Subscribed User

Frequency BUnsubscribed User

Macro-Freq. A (only 1carrier)Femto-Freq. B

White Spot avoided for unregistered user

ed User, Different carrier is assigned

43

bscribed User camped on Femto cell

Process of Japan RegulatoryProcess of Japan Regulatory (O(O

In the case of Macro Multi RF w/

Freq A FGood!!

Freq B FFreq B

UnsubscribedFreq C FUnsubscribed User

q F

Unregistered User can escape to other carrier than Femto cell.

Need to consider how to make SubFor offload purpose.p p

Overview)Overview)

/ Femto Access Control Operation

Freq A No Good!!

Freq BFreq B

SubscribedFreq C Subscribed User

Freq C

Possibility of Trouble finding Femto cell Freq B Due to no degrade of Macro Freq A, and C

bscribed User camped on Femto cell

44