1. Femtocells
April-2008

2. Agenda
Fix Mobile Convergence trend
Repeaters
Dual mode WiFi
Femtocells
What is a femtocell
Femtocell Definition
Kinds of UMTS femtocells (different architectures)
Femtocells challenges
Cost
Interference
Potential Consumer Concerns
Worldwide activity
Carrier position towards femtocells
Existing trails
Femtocells players
Femtoforum
Confidential

3. The Need
Voice, Data, Video Anywhere
Single Device & Single Number
Mobility – Indoor & Outdoor
Confidential

4. Potential Solutions
Repeaters
Dual Mode WiFi
Femtocells
Confidential

5. Femtocell Concept
Indoor cellular coverage
Can “talk” with any handset device
Low cost backhauling
Confidential

6. A Femtocell Definition
A small cellular base station, designed for use in residential.
Connects to the service provider’s network via broadband.
Support 2 to 5 mobile.
Allows service providers to extend service coverage indoors.
Incorporates the functionality of a typical base station but
extends it to allow a simpler, self contained deployment.
The concept is applicable to all wireless standards, including
UMTS, GSM, CDMA-2000, TD-SCDMA and WiMAX solutions.
Confidential

7. UMTS Macro NW Architecture
Confidential

8. UMTS Femtocells Architecture
Iub over IP Architecture
Scalability Problem
RNC can’t handle 1000s of NodeBs
Confidential

9. UMTS Femtocells Architecture
Iu over IP Architecture
Requires RNC implementation per
femtocell
Confidential

10. UMTS Femtocells Architecture
SIP/IMS Architecture
Requires changes at the existing CNs
Confidential

11. UMTS Femtocells Architecture
De-facto architecture is the Iu over IP
Confidential

12. Femtocells Challenges
Femtocell Cost
Network Architecture Harmonization
RF Interference
Remote Device Management
Potential Consumer Concerns
Confidential

13. Femtocells Cost
Today femtocell price is ~$250
Femtocell price must be less than $100
in order to have a high volume market
Digital baseband and RF ICs must be
highly integrated
Confidential

14. Network Arc Harmonization
Confidential

15. RF Interference
Need to investigate the interference
scaling effect of large deployments of
femtocells on the same/adjacent carrier
in a range of different networks
Confidential

16. Potential Consumer Concerns
A basestation at my home???
Femtocell transmits less than DECT or WiFi
Handset transmits less power near femtocell
UMTS femtocell max transmit power is 10-
17dBm (3G handset max transmit power is 21dBm)
Confidential

17. Femtoforum
Today has 65 members
Confidential

18. Femtoforum
Confidential

19. Femtocells Vendors
NW vendors, startups companies and consumer networking vendors
Confidential

20. Femtocells Here They Are
Ubiquisys
ip.access Ericsson
Airvana Radioframe Samsung
Confidential

21. US Operators View
Confidential

22. Europe & Japan Operators View
Confidential

23. Thank You!
Confidential