Basic Civil Engineering first year Notes- Chapter 4 Building.pptx
3G
1.
2. To meet the growing demand in network capacity
3G standards started evolving.
Launched in japan by NTT 2001
It is based on the ITU family of standards.
3G technologies enable network operators to offer
users a wider range of more advanced services.
Services include many applications all in a mobile
environment.
The data are sent through the technology called
Packet switching.Voice calls are interpreted
through circuit switching.
3. The first pre-commercial 3G network was launched by NTT DoCoMo in
Japan on 1998.
It was first available in May 2001 as a pre-release (test) of technology.
The first commercial launch of 3G was in Japan on 1 October 2001.
The first commercial network in Europe was opened for business
by Telenor in December 2001 with no commercial handsets and
thus no paying customers.
The first network to go commercially live was by SK Telecom in South
Korea on the CDMA-based 1xEV-DO technology in January 2002.
4. Poor voice quality
Poor battery life
Large phone size
No security
Frequent call drops
Limited capacity and poor handoff
reliability.
5.
6.
7.
8. 3G technology has taken the gaming to the next level.
Real-time multiplayer gaming is possible in 3G system.
Innovative new services are being added by developer daily.
9. Not simply rebroadcast of TV or website.
Enhanced existing service for mobile
environment.
Multi-faceted – 24*7 access to multiple
live streams , video , image & text
content , voting , messaging.
User interaction on multiple levels.
Fully integrated in browser – one click
access.
10. 3G was relatively slow to be adopted globally.
In some instances, 3G mobile operators must build
entirely new networks and license entirely new
frequencies.
In December 2007, 190 3G networks were operating
in 40 countries, according to the Global Mobile
Suppliers Association (GSA).
3G has also introduced the term "mobile broadband"
USB Modems connecting to 3G networks are becoming increasingly
common.
11.
12.
13. Specifications 2G 3G
Frequency band 1- 1.5 GHz 1.5- 2.8 GHz
Band width 30-200 kHz 15-20 MHz
Data rate 96- 384 kbps upto 2 Mbps
Access CDMA Wideband CDMA
system GSM ITU
Switching Circuit Packet/circuit
Top speeds 200kmph 200kmph
14.
15. Asia is also using 3G services very well.
Dialog Axiata PLC was First to serve 3G Service in South Asia in 2006
A lot of companies like BSNL, WorldCall, PTCL, Maxis, Vodafone,
Airtel, Idea Cellular, Aircel, Tata DOCOMO and Reliance have
released their 3G services.
11 December 2008, India entered the 3G arena with the launch of 3G
enabled Mobile and Data services by Government owned Mahanagar
Telephone Nigam Ltd MTNL in Delhi and later in Mumbai.
After MTNL, another state operator Bharat Sanchar Nigam Ltd.
(BSNL) launched 3G services on 22 Feb 2009 in Chennai and later
launched 3G as Nationwide.
16. Top five 3g providers in india
BSNL
Airtel
Reliance
Tata docomo
Idea
17. 3g providers in India
Maharastra Karnataka
1. Tata 1. Tata
2. Vodafone 2. Aircel
3. Idea 3. Airtel
A.P Tamilnadu
1. Airtel 1. Airtel
2. Idea 2. Vodafone
3. Aircel 3. Aircel
