PRESENTED BY –DHANANSHU TIWADI

CHANDRAPRAKASH JATPARAS JOSHI

AVLESH MEENAPRAVEEN KUMAR

PROF. –ASHOK GADHWAL

1G

2G

3G

4G

CONTENTS

1. 1G TECHNOLOGY

*FEATURES

* DRAWBACKS OF 1G

2. 2G TECHNOLOGY

*FEATURES

*DRAWBACKS OF 2G

3. 2.5G TECHNOLOGY

* FEATURES

4. 3G TECHNOLOGY

*FEATURES

*MUSIC ON MOBILE

*TAKING GAME THE NEXT LEVEL

* EXTENDING TV TO MOBILE

*ADVANTAGES

*DISADVANTAGES

5. 4G TECHNOLOGY

*WHAT IS 4G

*3G VS 4G

*ADVANTAGES

*DISADVANTAGES

*4G SERVICES IN ASIA

*ESTIMATION OF GLOBAL WIRELESS

SUBSCRIBER GROWTH

1G WIRELESS TECHNOLOGYUsing Analog signals

Listen to handset

Frequency typically 150MHz & above

Poor voice quality

Poor battery life

Large phone size

No security

Frequent call drops

Limited capacity and poor handoff

reliability.

2G phones using global system for mobile communications (GSM) were first used in the early 1990 s in Europe. GSM provides voice and limited data services and uses digital modulation for improved audio quality. Digital AMPS , CDMA were some of the 2G systems.

• Text

• SMS

• Fax

• 2 Dimensional

The GSM is a circuit switched , connection oriented technology, where the end systems are

dedicated for the entire call session.

This causes inefficiency in usage of bandwidth and resources.The GSM enabled

systems do not support high data rates. They are unable to handle complex data such as video.

Reduce range of sound.

Weaker digital signal.

o Phone calls/ Fax

o Voice mail

o Send/Receive e-mail messages

o web browsing

o camera phones

o speed: 64-144 kb/sec

o Time to download a 3 min MP3 song 6-9 min

THIRD GENERATION To meet the growing demand in network capacity, rates

required for high speed data transfer and multimedia applications , 3G standards started evolving.

It is based on the International Telecommunication Union (ITU) family of standards. 3G technologies enable network operators to offer users a

wider range of more advanced services. Services include wide-area wireless voice telephony, video-

calls and broadband wireless data , all in a mobile environment.

The data are sent through the technology calledPacket switching.Voice calls are interpreted through circuit switching.

Features includes

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.

EXTENDING TV TO

MOBILES

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

Video-Conferencing

ADVANTAGES OF 3G

ANYTIME,ANYWHERE

CONNECTION ‘’4G’’ Also known as “Mobile Broadband Everywhere”

One of the terms used to describe 4G is:

Mobile Multimedia

Anytime Anywhere

Global mobility Support

Integrated wireless solution and

Customized personal service.

WHAT IS 4G???

Faster and more reliable – 100 Mbps Lower cost than previous generations. Multi-standard wireless system

- Bluetooth , Wifi Coverage of wide area. Wide Variety of services capability. Ad Hoc networking IPv6 core Potentially IEEE standards 802.11 Only packet switching used unlike previous generations. OFDMA(Orthogonal Frequency Division Multiple access)

and MIMO(Multiple In Multiple Out) replace CDMA spread spectrum radio technology.

3G VS 4G

Specifications 3G 4G

Frequency band 1.5- 2.8 GHz 2-8 GHz

Band width 5-20 MHz 5-20 MHz

Data rate upto 2 Mbps 20 Mbps or more

Access wideband CDMA Multi-carrier-CDMAorOFDM(TDMA)

FEC Turbo codes concatenated codes

Switching Circuit/ Packet Packet

Top speeds 200kmph 200kmph

Estimation of Global

Wireless Subscriber

growth

ADVANTAGES OF 4G

High usability: anytime, anywhere and with any

technology.

Support for multimedia services at low transmission cost.

Higher bandwidth , tight network security.

DISADVANTAGES OF 4G

The equipment required to implement a next generation

network is still very expensive.

Carriers and providers have to plan carefully to make sure

that expenses are kept realistic.