Unlicenced mobile access

1. Presented By:
B.VASUBAPU
08Q61A0505
UNLICENSED MOBILE ACCESS

2. MY PRESENTATION
INTRODUCTION
HISTORY
WORKING AND PRINCIPALS
RAN versus UMA
ARCHITECTURE
3GPP GAN
PROTOCOLS IN THE UMA SYSTEM
GSM Services supporting abilities by UMA.
DEVICES
ADVANTAGES
DISADVANTAGES
CONCLUSIONS

3. INTRODUCTION
Unlicensed Mobile Access (UMA) technology provides access to
GSM and GPRS mobile services over unlicensed spectrum
technologies, including Bluetooth and 802.11.
 By deploying UMA technology, service providers can enable
subscribers to roam and handover between cellular networks and
public and private unlicensed wireless networks using dual-mode
mobile handsets.
With UMA, subscribers receive a consistent user experience for
their mobile voice and data services as they transition between
networks.
The widespread adoption of UMA technology, a number of
leading companies within the wireless industry have jointly
developed a set of open specifications.

4. HISTORY
UMA was developed by a group of operator and vendor
companies. The initial specifications were published on 2
September 2004.
The companies then contributed the specifications to the
3rd Generation Partnership Project (3GPP) as part of 3GPP work
item "Generic Access to A/Gb interfaces".
On 8 April 2005, 3GPP approved specifications for Generic
Access to A/Gb interfaces for 3GPP Release 6. and, and renamed
the system to GAN. But the term GAN is little known outside the
3GPP community, and the term UMA is more common in
marketing.
 

5. WORKING AND PRINCIPALS
 UMA Technology Operation
UMA technology provides
alternative access to GSM and
GPRS core network services
via IP-based broadband
connections.
In order to deliver a seamless user experience, the specifications
define a new network element (the UMA Network Controller,
UNC) .
The UNC interfaces into the core network via existing 3GPP
specified A/Gb interfaces.

6. RAN versus UMA

7. ARCHITECTURE
UMA Technology Architecture

8. 3GPP GAN

9. PROTOCOLS IN THE UMA SYSTEM
 
In the UMA system, only two protocols have been standardized
specifically for the purpose of providing UMA access to the
mobile network.
UMA Radio Resource protocol (Generic Access –
Resource Control and Generic Access Circuit Switched
Resources) for GSM services.
UMA Radio Link Control protocol (Generic Access –
Packet Switched Resources) for GPRS services.

10. GSM Services supporting abilities by UMA.
CS Telephony
CS Supplementary Services
CS Emergency call
Short Message Service (SMS)
General Packet Radio Service (GPRS)
Location Services (LCS)
Multimedia Messaging Service (MMS)

11. DEVICES
HTC - HTC Touch 3G
LG - Optimus One, LG Optimus Me
Nokia - 6301, 6086, 7510, E73 Mode, E5, C7 Astound
Samsung - T-Mobile's Galaxy SII SGH-T989
Sagem - my419X
BlackBerry - Curve 8320, 8520, 8820, Curve 8900,
Pearl 8120 and 8220, Bold 9700, Bold 9780, Torch 9800,
Blackberry 9105, 9300, soon on Blackberry Bold 9900.
Sony Ericsson - G705u (3G)
Motorola - Motorola DEFY

12. ADVANTAGES
Instead of erecting expensive base stations to cover dead zones,
GAN allows carriers to add coverage using low cost 802.11 access
points. Subscribers at home have very good coverage.
Subscribers do not rely on their operator's ability to roll out
towers and coverage, allowing them to fix some types of coverage
themselves.
GAN is currently the only commercial technology available that
combines GSM and 802.11 into a service that uses a single
number, a single handset, a single set of services and a single
phone directory for all calls.

13. DISADVANTAGES
Subscribers must upgrade to Wi-Fi/UMA enabled handsets to
take advantage of the service.
Calls may be more prone to disconnect when the handset
transitions from Wi-Fi to the standard wireless service and vice
versa (because the handset moved out or within the Wi-Fi's range)

14. CONCLUSIONS
In brief, subscribers using UMA can take advantage of improved
indoor coverage and higher data rates, when accessing the local
WLAN.
While leading UMA Consortium members like Kineto Wireless
are developing services and features that take advantage of this
technology in order to provide compelling features that fixed and
wireless phone users will be keen to pay.

15. Thank you