femtocell power point presentation for college students

1. A NEW GENERATION CELLULAR
STATIONS
FEMTOCELL

3. What is Femtocell?
 Cluster of small cells
 Consists of a base station FAP(Femtocell Access
Point)
 Two types of FAPs:
• home FAP
supports 3-5 users.
• enterprise FAP
supports 8-16 users.

4. Purpose of Femtocell
 A Femtocell provides an improved cellular
coverage within a building
 Bringing the network to the subscriber
 Cost effective
 High bandwidth
 Transmit voice and data cellular signals within a
home or small office

6. Femtocell Self-organization
Requirements
 Femtocell Self-Configuration
Femtocell to be able to select the initial
parameters(channel, neighbor list, power, etc. )
 Femtocell Self-Optimization
Monitor the environment and adjust changes.
 Femtocell Self-Healing
Able to resolve any problems
 Secure and Self-Managing
Encrypt all voice and data

7. Femtocell Architecture

8. Femtocell Network Architecture

9. Home NodeB (HNB)
 Femtocell Access Point (FAP)
 low-power access point installed in user premises
(base station)
 better access to the network and this in turn
increases the coverage area

10. HNB GateWay (HNB GW)
 link security, control, and aggregation
 maintains the core network functionality

11. Security GateWay (SeGW)
 secured internet connection between femtocell
users and the core network
 uses the standard Internet security protocols such
as IPSec
 provide encryption support for all signaling and
user traffic

12. HNB Management System
(HMS)
 Consists of two elements:
 Automatic Network Planner application
- adds RF planning algorithms, RF
configuration and a northbound interface to
Operational Support Systems (OSS)
 Device Manager application
- implements functions such as remote
configuration, remote diagnostics, software
upgrade, fault management, performance
data collection and device authentication

13. Iu-h Interface
 used to provide the link or interface that connects the
HNB with the HNB-GW
 includes a new HNB Application Protocol(HNBAP)
-provides the high level of scalability

14. Iu-b Over IP
 Existing RNCs connect to Femtocells through
standard Iu-CS (circuit-switched) and Iu-PS
(packet-switched) interfaces present in macro cell
networks
 capital expenditure is comparatively low

15. Femtocell Issues
 Femtocell interference issues
 Femtocell spectrum issues
 Femtocell regulatory issues
 Femtocells and health issues

16. Synchronization
 Three types of synchronization might be required:
• Frequency
• Time
• Phase

17. COMPARISON OF FEMTOCELL
WITH OTHER TECHNOLOGIES

18. Femtocell vs. Wi-Fi
Femtocell Wi-Fi
Enable cellular carriers to compete
with VoIP, Wi-Fi and UMA
VoIP pricing on calls within the home
No need for expensive dual mode
handsets
Need expensive handset
Improves 3G coverage indoors and
encourages use of data services
Provides indoor coverage via Wi-Fi (or
Bluetooth)
Improves capacity Use dual mode phones in Wi-Fi hot spots
Works in licensed spectrum Works in unlicensed spectrum

19. Femtocell vs. Macro cell
Femtocell Macro cell
Air Interface Telecommunication standard Telecommunication
Standard
Backhaul Broadband Internet Telephony network
Cost $200/year $60,000/year
Cellphone power
consumption
Low High
Radio Range 10-50 meters 300-2000 meters

20. Femtocell vs. WLAN
Femtocell WLAN
Spectrum Licensed Unlicensed
Unlicensed Conflict-free Contention-based
Backhaul Cable/DSL Cable/DSL
Air interface Cellular standard 802.11a/b/g/n
Range 10-50m 35-70m
Service Primarily voice Primarily data
Current Cost $200-$250 $50-$100

21. Thank you...