Arief Hamdani Gunawan - Telkom Indonesia- LTE Femtocells

Deploying LTE Femtocells in Order toAchieve Coverage in Rural Areas

Arief Hamdani Gunawan

As of June 30, 2009 :

The Core Business

As of June 30, 2009 :

Penetration in Telco Industry

Agenda

•Traffic approach

•Optimizing

through Femto

Deploying LTE Femtocells Achieving Coverage in Rural Areas

•Adoption of technologies

•Deployment scenarios

•SAE capability

through Femto

•Possibility

for 700 MHz

LTE

urban

Traffic Approach

HSPA+ / EV-DO Rev A/B

traffic

•optimistic traffic

•optimistic revenue

•pessimistic traffic

•equipment capacity

HSPA /EV-DO Rev A

suburban

rural

EV-DO Rev A/B

The decouple of traffic and revenue is bigger in higher traffic

time

•pessimistic traffic

•pessimistic revenue

Different Deployment Scenarios for LTE

CDMAto LTE

GSMto LTE

Optimistic ScenarioPessimistic Scenario

GSM

3G 1X

Today LTE Deployment

GSM

LTE

3G 1X

LTEEV-DO Rev A/B

3G1X

3G 1X

Scenarios

Important Prerequisites:

•Technology maturity

•Demand

•Frequency allocation

Other:

•Efficient

W-CDMAto LTE

Optimistic ScenarioPessimistic Scenario

GSM

UMTS

GSM

UMTS UMTS

GSM

GSM

UMTS

LTE

GSM

UMTS

LTE

The LTE introduction for wireless operator

3G 1X

EV-DO Rev A

3G 1X

EV-DO Rev A/B

LTE

•Efficient

•Scalable

The Right Time - Relative Adoption of Technologies

3.9G

3G

Rysavy Research projection based on historical data.

2G

Saturation of 2G < LTE Introduction Timing < Saturation of 3G(after 2010) (before 2020)

LTE / SAE

System Architecture Evolution

3GPP

IP Access

(HSPA, HSPA+)

S3/S4

S2LTE / SAE

EPCEUTRAN

non 3GPP

IP Access

(EV-DO Rev A/B)

WLAN 3GPP

IP Access

S2

S2

S1

The S2, S3, S4 interface enable SAE to provide flexibility

System Architecture Evolution Support

to Achieve Coverage in Rural Areas

Suitable to support: Existing GSM/W-CDMA in rural areas

LTE / SAE

3GPP

IP Access

(HSPA, HSPA+)

Suitable to support: Existing CDMA in rural areas

Suitable to support: Existing GSM/W-CDMA in rural areas

Suitable to support:

•(Optimizing) current wireline infrastructure

•High reliability

•New wireless deployment

LTE / SAE

EPCEUTRAN

non 3GPP

IP Access

(EV-DO Rev A/B)

WLAN 3GPP

IP Access

FEMTO, X2 interface, and SON architecture able to serve un-coverage area, remote area and isolated area

Why

(Optimizing) current wireline infrastructure through Femto

• Basic coverage: provide Femto as the main infrastructure in the

‘blank spot’.

• Data coverage: provide Femto as the main infrastructure in the low

speed area or no data area (ex: GSM only area), in fact the indoor is

become more critical.

• Capacity expansion: the ‘independent individual BTS’ able to reduce

congestion in BTS.

• User experience: provide xDSL experience in the home

user/building user

• Cost reduction: Reduce backhaul cost and maintenance

Most Mobile Data Use Occurs Indoors

Source: Informa’s Mobile Access at Home Report

A Typical Femto Solution

HLRAAA

FAPUE SEGW FGWCS/PS

CN

ISP Network(ADSL)

IPsec tunnel

Uu Iu orA/Gb

D’

Service Network

Option 1 Option 3Option 2

AAA = Authentication, Authorization, and Accounting

CS/PS CN = Circuit Switch / Packet Switch Core Network

FGW = Femto Gateway

HLR = Home Location Register

SeGW/Sec =GW Security Gateway

UE = User EquipmentIEEE Communications Magazine . September 2009

Femto-subsystem reference architecture- example -

FGW

Femto Management System

FAP-MS FGW-MS

Fm Fg

Subscriber Databases

Fr

HPLMN Core Network

FAPMobile

device

Home

GWFL

Fa

SeGW

Access

Network

Radioi/f

CS core

PS core

Fb-cs

Fb-ps

IMS coreFb-ims

HPLMN RAN

Frequency Allocation Candidate

in UHF Band (470 – 806 MHz)

• Current condition:

– Capacity: 42 Analogue Channels (22 to 61).

– Jakarta condition: 29 trans, 37 tpi, 39 tvri, 41 ivm, 43 rcti, 45 sctv,

47 antv, 49 dvnm 51 dlob, 53 latvm 57 metro, 31 tvri, 35 ivm, 27

spcet (Source: RANCANGAN KEBIJAKAN PENATAAN PITA spcet (Source: RANCANGAN KEBIJAKAN PENATAAN PITA

FREKUENSI TV SIARAN UHF (470 – 806 MHz))

• Future approach:

– 502 to 606 MHz: Band IV and V (lower): 16 channels (25 to 41)

and bandwidth/channel 8 MHz for DVB-T free-to-air.

– 606 to 806 MHz: Band V (upper) : 20 channels (42 to 62) and

bandwidth/channel 8 MHz for mobile multimedia.

Achieving Digital Dividend for LTE Deployment

• Fixed Broadcast

– Modulation: 64 QAM and capacity: 48 Mbps.

– High Definition TV (HDTV) : 4 programs

– SDTV (per program 2 Mbps) : 24 programs

– Audio content 64 kbps: 750 programs

• Mobile Broadcast • Mobile Broadcast

– Modulation: 16 QAM and capacity: 12 Mbps

– SDTV: 8 programs

• Time and license constraint:

– Digital TV Trial

– Analogue moratorium and simulcast

– Analogue Phase Out

• More to SDTV rather than HDTV.

• More to frequency efficiency.

ClosingDeploying LTE Femtocells to achieve coverage in rural areas

• So, what is the main consideration to deploy LTE (in rural)?– Technology maturity

• Why LTE Femtocells able to achieve coverage in rural areas

– Through the X2 interface, LTE able to utilize existing wireless access / cellular infrastructure

– Through the Femto interface, LTE able to optimize the infrastructure. FEMTO can be suitable for providing basic coverage, data coverage, capacity expansion, user experience and cost reduction.capacity expansion, user experience and cost reduction.

– FEMTO, X2 interface, and SON architecture able to serve un-coverage area, remote area and isolated area

– Demand• The uncertainty of decouple in urban is higher rather than in rural.

• The scalable solution of technology and/or the capability to optimize the current infrastructure might be important to serve in rural areas.

– Frequency allocation• The digital dividend is very interesting for LTE deployment in many countries

• The other considerations are efficiency and scalability

Thank YouThank You

Arief Hamdani GunawanArief Hamdani Gunawan

hamdani2@telkom.co.idhamdani2@telkom.co.id