Presented in LTE World Summit 2010

1. Deploying LTE Femtocells in Order to
Achieve Coverage in Rural Areas
Arief Hamdani Gunawan

2. The Core Business
As of June 30, 2009 :

3. Penetration in Telco Industry
As of June 30, 2009 :

4. Agenda
Deploying LTE Femtocells Achieving Coverage in Rural Areas
•Optimizing
•Traffic approach
through Femto
•Adoption of technologies
•Deployment scenarios
•Possibility
•SAE capability
for 700 MHz

5. Traffic Approach
traffic
•equipment capacity
•optimistic traffic
LTE
urban
•optimistic revenue
HSPA+ /
EV-DO Rev A/B •pessimistic traffic
suburban
HSPA / •pessimistic revenue
EV-DO Rev A
rural
time
The decouple of traffic and revenue is bigger in higher traffic

6. Different Deployment Scenarios for LTE
Scenarios Today LTE Deployment
Important Prerequisites:
GSM GSM
GSM
to LTE LTE •Technology maturity
•Demand
3G1X •Frequency allocation
3G 1X
EV-DO Rev A/B
3G 1X LTE
CDMA Pessimistic Scenario Optimistic Scenario
to LTE Other:
3G 1X
3G 1X •Efficient
EV-DO Rev A/B
EV-DO Rev A
LTE •Scalable
GSM
GSM
GSM UMTS
UMTS UMTS LTE
W-CDMA Pessimistic Scenario Optimistic Scenario
to LTE GSM
GSM
UMTS
UMTS
LTE
The LTE introduction for wireless operator

7. The Right Time - Relative Adoption of Technologies
3.9G
3G
2G
Rysavy Research projection based on historical data.
Saturation of 2G < LTE Introduction Timing < Saturation of 3G
(after 2010) (before 2020)

8. System Architecture Evolution
3GPP
IP Access
(HSPA, HSPA+)
S3/S4
LTE / SAE S2
EUTRAN EPC
S1
S2
non 3GPP
WLAN 3GPP
IP Access
IP Access
(EV-DO Rev A/B)
The S2, S3, S4 interface enable SAE to provide flexibility

9. System Architecture Evolution Support
to Achieve Coverage in Rural Areas
3GPP
Suitable to support:
IP Access Existing GSM/W-CDMA in rural areas
(HSPA, HSPA+)
LTE / SAE
EUTRAN EPC
Suitable to support:
•(Optimizing) current wireline infrastructure
•High reliability non 3GPP
•New wireless deployment WLAN 3GPP
IP Access
IP Access
(EV-DO Rev A/B)
Suitable to support: Suitable to support:
Existing CDMA in rural areas Existing GSM/W-CDMA in rural areas
FEMTO, X2 interface, and SON architecture able to serve un-coverage area, remote area and isolated area

10. 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

11. Most Mobile Data Use Occurs Indoors
Source: Informa’s Mobile Access at Home Report

12. A Typical Femto Solution
D’
AAA HLR
ISP Network
(ADSL)
Uu Iu or CS/PS
UE FAP SEGW FGW A/Gb CN
IPsec tunnel
Option 1 Option 2 Option 3
Service Network
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 Equipment
IEEE Communications Magazine . September 2009

13. Femto-subsystem reference architecture
- example -
Femto Management
System
FAP-MS FGW-MS
Fm Fg HPLMN Core Network
Fr Subscriber
FGW Databases
Fb-cs
CS core
Fa
Radio Fb-ps
i/f PS core
Mobile FAP FL Home Access
device GW
Network SeGW Fb-ims
IMS core
HPLMN RAN

14. 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
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.

15. 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
– 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.

16. Closing
Deploying 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.
– 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

17. Thank You
Arief Hamdani Gunawan
hamdani2@telkom.co.id