Presented By:

B.VASUBAPU08Q61A0505

UNLICENSED MOBILE ACCESS

MY PRESENTATION INTRODUCTIONHISTORYWORKING AND PRINCIPALSRAN versus UMAARCHITECTURE3GPP GANPROTOCOLS IN THE UMA SYSTEMGSM Services supporting abilities by UMA.DEVICESADVANTAGESDISADVANTAGESCONCLUSIONS

INTRODUCTIONUnlicensed 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.

HISTORYUMA 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.

 

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.

RAN versus UMA

ARCHITECTURE

UMA Technology Architecture

3GPP GAN

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 SwitchedResources) for GSM services.

UMA Radio Link Control protocol (Generic Access –Packet Switched Resources) for GPRS services.

GSM Services supporting abilities by UMA.

CS TelephonyCS Supplementary ServicesCS Emergency callShort Message Service (SMS)General Packet Radio Service (GPRS)Location Services (LCS)Multimedia Messaging Service (MMS)

DEVICES

HTC - HTC Touch 3G LG - Optimus One, LG Optimus MeNokia - 6301, 6086, 7510, E73 Mode, E5, C7

AstoundSamsung - T-Mobile's Galaxy SII SGH-T989Sagem - my419XBlackBerry - 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

ADVANTAGESInstead 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.

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)

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.

Thank you