This document discusses different generations of mobile technologies. It describes 1G technologies as analog systems from the 1980s using standards like AMPS, TACS and ETACS. 2G introduced digital networks for better quality voice and higher capacity. Main 2G standards were GSM, CDMA and TDMA. 3G promised faster internet, voice and fax services globally. 4G provides a comprehensive IP solution for anytime, anywhere access to voice, data and multimedia at higher rates than previous generations, with support for interactive services and wider bandwidths.

2. Types of Technologies:
- 1G
- 2G
- 3G
- 4G

3. 1 Generation:
These are analog telecommunication
standards introduced in 1980s and
continued until being replaced by 2G
digital telecommunication

4. 1G used following standards:
»AMPS (Advanced Mobile Phone System)
»TACS (Total Access Communication System)
»ETACS (Extended Total Access
Communication System)

5. 1G Devices:

6. 2G: these system did the following
»Digitized not only the control link but also
voice signal
»The new system provided better quality and
higher capacity at lower cost to consumers

7. Main 2G telephony standard are:
» GSM(Global System For Mobile Communication
» CDMA( Code Division Multiple Access)
»TDMA(Time Division Multiple Access)

8. 3 Generation:
»These promise faster communication services,
including voice, fax and internet, anytime and
anywhere with seamless global roaming

9. 3G Technology:

10. 3G working:

12. How does 3G cost and its adv.:
»3G is not very cheap but it is worthwhile for the
user who need connectivity on the move.
»Since 3G is a packet based technology
therefore user is charged for amount of data
transferred.
»3G network is a available on the move, unlike
wi-fi, which is limited to only a few meters.

13. Comparison:

15. Definition:
4G (also known as Beyond 3G), an abbreviation for
Fourth-Generation, is a term used to describe the
next complete evolution in wireless communications.
A 4G system will be able to provide a comprehensive
IP solution where voice, data and streamed
multimedia can be given to users on an “Anytime,
Anywhere” basis, and at higher data rates than
previous generation.

17. Features of 4G Networks:

18. Features of 4G Networks(cont.)
»Support interactive multimedia services:
teleconferencing, wireless Internet , etc.
»Wider bandwidths , higher bit rates.
»Global mobility and services portability.
»Low cost.
»Scalability of mobile networks(>10 times the
capacity of 3G)

19. iphone 4G:

20. »A single physical terminal with
multiple interfaces to access the
different wireless networks
» Advantages
- Improve call completion
- Expand coverage area
- Reliable coverage in case of
network, link or switch failure
» Disadvantages:
-Complexity in the hardware of
the device.
»Handoff Mechanism:
Performed by the user, device or
network

21. 3G vs. 4G:

22. Difference between 3G and 4G:

24. Thank You