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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.
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