The document outlines the evolution of wireless communication from 1G to 4G, detailing the key features, advantages, and drawbacks of each generation. It highlights significant technological advancements, such as the transition from analog to digital signals, and the introduction of services like text messaging and high-speed internet. The summary includes the progression of data transfer rates, from 2.4 kbps in 1G to 100 mbps – 1 gbps in 4G LTE.

1. Evolution of
Wireless
Generations

2.  In last few decades there is a great progress
in wireless networks , namely from 0G to 4G.
 1G
 2G
 3G
 4G

3. 1G
 1st Generation of wireless communication.
 Was launched in Japan in 1979-1980.
 Involve the technology AMPS (Advanced
Mobile Phone System)
 Data transfer rate is 2.4 Kbps

4.  1G uses analog signals , means the signals
are not converted in digital one.
 Called analog telecommunication standards.

5. Features
 Allows the voice calls in one country.

6. Drawbacks
 Poor voice quality
 Poor battery life
 Large phone size
 No security
 Limited capacity
 Low data rate(As 1G uses analog signals so
these signals can not cover up long distance
so we have move forward.)

8. Problem
 As analog signals cant cover long distance
so that is the advantage of analog signal.
Solution
 Instead of sending analog signals they should
be converted into digital signals

9. 2G
 Uses digital technology.
 Uses digital signals.
 Introduced in Finland 1991-2000.
 Data transfer rate is 64 kbps.

10. Features
 Allows text messages , picture messages
and MMS

11. Technology
 GSM is the technology of 2G.
 At start GSM stands for Groupe Special
Module. Later on it changes to Global
System for mobile communications.

12. Problem
 Require strong digital signals for data
transmission , in case of no network
coverage , signals become week.
 Unable to handle videos.

14. 2.5G
 Follows the packet switching methodology.
 From
 Involv-2010
 the technology named GPRS.
 GPRS stands for General Packet Radio Service.
 GPRS support the transmission of data in form of
packets . And these packets are transmit through
air (Radio).
 GPRS refers to data rate of about 64-144 kbps.

15. Features
 Phone calls
 Send/receive email messages
 Web browsing
 Camera phones
 Take 6-9 minutes to download a 3 min mp3
song.

16. Problem
 Data rate is less

17. 3G
 Introduced in 2000.
 Data transfer rate is 144kbps – 2Mbps

18. Features
 Faster communication
 Send / receive large email messages
 High speed web
 High security
 Video conferencing
 3D gaming
 TV streaming
 11 – 90 sec to download a 3 minutes mp3
song.

20. 4G LTE
 The target was set to
 100 mbps – 1 Gbps
 Introduced in 2009.
After a long time research and working this target
is achieved. That’s why its is called Long Term
Evolution.