This document discusses the evolution of wireless network technologies from 1G to 4G. 1G networks provided basic call functionality with poor voice quality. 2G introduced digital encryption, text messaging, and improved roaming. 3G enabled higher data rates and multimedia services like maps and video calling. 4G offers even higher speeds of 100Mbps, lower costs, support for WiFi, and capabilities for video streaming, online gaming, and mobile TV broadcasting. The conclusion states that wireless networks are becoming a critical global infrastructure connecting 1G through 4G systems.

1. 1G, 2G, 3G, 4G
TECHNOLOGY
Presented
By
Aurovindo Sahu
Reg. No. 12031024
2nd semester MCA

2. Overview
Introduction
Generation of wireless network
technology
1st Generation (1G)
 Drawbacks of 1G
2nd Generation (2G)
 Benefits of 2G technology & drawbacks
2.5G wireless

3. Overview (con’t)
3rd Generation (3G)
 Benefits of 3G
 Drawbacks of 3G
4th Generation (4G)
 Why 4G ?
 Benefits of 4G
Comparison between 3G and 4G
Conclusion

4. Introduction
What is the Generation of cellular network
technology ??

5. 1st Generation (1G)
The first commercially automated cellular network
(the 1G) was launched in Japan by NTT (Nippon
Telegraph and Telephone) in 1979, initially in the
metropolitan area of Tokyo.
First generation used Total Access
Communication System (TACS).

6. Drawbacks of 1G
 Poor voice quality
 Poor battery life
 Large phone size
 No security
 Frequent call drops
 Can’t send text message

7. 2nd Generation (2G)
2G is short for second-generation wireless telephone
technology. Second generation 2G cellular telecom
networks were commercially launched on
the GSM standard
in Finland by Radiolinja in 1991.

8. Benefits of 2G Technology
 Phone conversations were digitally
encrypted.
 Text message service.
 Roaming facility.
Drawbacks of 2G Technology
 Roaming facility is semi-global
 Voice quality is not so good

9. 2.5G wireless
An interim stage that is taken between 2G and
3G that is 2.5G.
Features includes
 Phone calls/ Fax
 Voice mail
 Send/ Receive e-mail message
 web browsing
 Camera phones
 Speed: 64-144 kb/sec

10. 3rd Generation (3G)
 To meet the growing demand in network capacity,
rates required for high speed data transfer and
multimedia applications, 3G standard started
evolving.
 3G technologies enable network operators to offer
users a wider range of more advanced services.
 Data are sent through the technology called packet
switching / circuit switching.

11. Features includes
 Phone calls/ Fax
 Global roaming
 Send/ receive large email messages
 High speed web
 Navigation/ maps
 Video conferencing
 TV streaming
 Speed : 200 kb/sec- 2 mb/ sec

12. Advantages of 3G
 More bandwidth, security & reliability.
 Inter- portability between service providers.
 High data rates.
 Rich multimedia services.
 Always online devices.

13. Disadvantages of 3G
 Expensive input fees for the 3G service
licenses.
 Numerous differences in the licensing terms.
 It is a challenge to build the necessary.
 Infrastructure for 3G.
 Expense of 3G phones.

14. 4th Generation (4G)
A new revolution in the mobile market of India has
begun by Bharathi Airtel, one of the leading
mobile companies in the country, which has started
their services for the fourth generation mobiles in
Kolkata.

15. What is 4G ?
 Faster and more reliable – 100 Mbps
 Lower cost than previous generations
 Multi-standard wireless system
 Wi-Fi
 Coverage of wide area
 Wide variety of services capability
 IPv6 core
 Only packet switching used.

16. Why 4G ?
For the customer
 Video streaming, TV broadcast
 Video calls, video clips-news, music, sports
 Enhanced gaming, chat, location services
For Business
 High speed Tele-working
 Video conferencing
 Real-time financial information

17. 3G vs 4G

18. Conclusion
Wireless systems becoming an important
infrastructure in our society. A virtual global system
is a good solution that can efficiently connect many
dedicated wireless systems including 1G to 4G
cellular systems.