SEMINAR REPORT ON GENERIC ACCESS NETWORK (GAN) By: Karan Kukreja 109/B.Tech(CSE)/ASET/2005 Submitted for: PARTIAL FULFILLMENT OF THE AWARD OF THE DEGREE OF B.TECH. (CSE) Under the Guidance of: Mr. Amrit Nath Thulal DEPARTMENT OF INFORMATION TECHNOLOGY, AMITY SCHOOL OF ENGINEERING AND TECHNOLOGY [AFFILIATED TO G.G.S.I.P.UNIVERSITY] OCTOBER, 2008
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
SEMINAR REPORT
ON
GENERIC ACCESS NETWORK
(GAN)
By:
Karan Kukreja
109/B.Tech(CSE)/ASET/2005
Submitted for:
PARTIAL FULFILLMENT OF THE AWARD OF THE DEGREE OF
B.TECH. (CSE)
Under the Guidance of:
Mr. Amrit Nath Thulal
DEPARTMENT OF INFORMATION TECHNOLOGY,
AMITY SCHOOL OF ENGINEERING AND TECHNOLOGY
[AFFILIATED TO G.G.S.I.P.UNIVERSITY]
OCTOBER, 2008
TABLE OF CONTENTS
1. Abstract
2. Introduction
3. Theoretical Description
3.1 How does this dual mode service work
3.2 Basic requirements for using GAN services
3.3 Participating companies and vendors of the GAN
3.4 A note on the history of the GAN (also called as the UMA)
4. Technical Details
4.1 GAN functional architecture
4.1.1. GANC(GAN Controller)
4.1.2. Security gateway
4.1.3. Authentication, Authorization and Accounting (AAA) infrastructure
4.1.4. Dual mode handset
4.1.5. Standard Wi-fi access point
4.2 Modes of operation
5. Advantages
5.1 For Carrier
5.2 For Subscriber
6 . Disadvantages
7. GAN/UMA beyond the dual mode
7.1 Femtocell
7.2 Analog Terminal Adapter
7.3 Soft Mobile
8. Similar Technology
9. Conclusion
10. References
1. ABSTRACT
Generic Access Network (GAN) is a telecommunication system which extends mobile
services voice, data and IP Multimedia Subsystem/Session Initiation Protocol (IMS/SIP)
applications over IP access networks.
This report will attempt to discuss the details of the GAN, its evolution, its services,
architecture, and other implications.
2. INTRODUCTION
The Generic Access Network (GAN) is an evolving wireless communications system in
which mobile phone sets function seamlessly between local area networks (LANs) and
wide-area networks (WANs). Using GAN technology, a cell phone subscriber can
communicate by voice, data and multimedia. As GAN technology is implemented,
cellular telephone subscribers can expect improved coverage, the ability to use a single
phone set for all their voice communications and perhaps cheaper rates with a single bill
for Internet and voice communications.
Main application of this GAN/UMA is the Dual-mode Handset service.
3. THEORETICAL DESCRIPTION
3.1 How does this dual-mode service work
With dual-mode services(GSM and Wi-fi), subscribers make calls from outside the home
as they would ordinarily, using the GSM radio network at the standard tariff rate. But
inside the home, the call travels over the subscriber’s wireless broadband connection,
so the operator can enjoy a similar economic structure as VoIP-over-broadband
provider.
3.2 Basic requirements for using GAN services
To offer GAN dual-mode services, mobile operators need handsets, network controllers,
call control, the security to protect the mobile operator voice network from
Internet-based threats, and wireless access points for their subscribers.
3.3 Participating companies and vendors of the GAN
Alcatel
British Telecom
Cingular
Ericsson
Kineto Wireless
Motorola
Nokia
Nortel Networks
O2
Research in Motion
Rogers Wireless
Siemens
Sony Ericsson
T-Mobile US
3.4 A note on the history of the GAN (also called as the UMA)
In September 2004, the participating companies published the initial UMA
specifications and formally introduced them to the 3rd Generation Partnership Project
(3GPP) standards body.
In April 2005, an unprecedented eight months later, the UMA specifications were
incorporated into the 3GPP release 6 specifications. While referred to as "Generic
Access Network" or GAN, within the 3GPP specifications.
In mid 2006, mobile operators around the world began announcing their intention to
deploy dual-mode handset (DMH)-based UMA services.
Throughout 2007, there were constant announcement of new UMA-enabled dual-mode
phones to support the commercial service offers.
In early 2008, the first commercial UMA-based fixed line VoIP service appeared as well
as the first UMA-enabled softmobile client.
4. TECHNICAL DETAILS
4.1 GAN functional architecture:
As seen in the figure the GAN functional architecture consists of 5 basic components :
4.1.1. GANC(GAN Controller)
4.1.2. Security gateway
4.1.3. Authentication, Authorization and Accounting (AAA) infrastructure
4.1.4. Dual mode handset
4.1.5. Standard Wi-fi access point
4.1.1.GANC :
The GANC provides dual-mode handsets with alternative access
to GSM voice and GPRS data services.
For voice traffic, the GANC integrates directly into an
operator Mobile Switching Center (MSC) through the
A interface.
For data traffic, the GANC integrates directly into an
operator serving GPRS support node (SGSN) through
the Gb interface.
4.1.2. Security gateway :
The introduction of a GAN solution into an operator network raises
numerous security implications and vulnerabilities inherent in an
IP-based architecture. The security gateway provides two important