Post on 30-Apr-2015
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SAAD AHMEDBE (VI)
Introduction To Technology’s Generations
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Using Analog signals Listen to handset Frequency typically 150MHz &
above
1G WIRELESS TECHNOLOGY
DRAWBACKS OF 1G
Poor voice quality
Poor battery life
Large phone size
No security
Frequent call drops
Limited capacity and poor handoff
reliability.
SECOND GENERATION
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.
FEATURES INCLUDES:
•Text•SMS•Fax• 2 Dimensional
DRAWBACKS OF 2G
The GSM is a circuit switched , connection
oriented technology, where the end systems are
dedicated for the entire call session.
This causes ineffi ciency 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.
2.5G WIRELESS
An interim stage that is taken between 2G and 3G that is 2.5G
Features includes:-o Phone calls/ Faxo Voice mailo Send/Receive e-mail messageso web browsingo camera phoneso speed: 64-144 kb/seco 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 called
Packet switching.Voice calls are interpreted
through circuit switching.
Features includes
Phone calls/ fax
Global roaming
Send/receive large email messages
High speed web
Navigation / maps
Video conferencing
TV streaming
Electronic agenda meeting reminder
Speed: 200 kb/sec-2mb/sec
Time to download a 3 min MP3 song:
11 sec-1.5 min
MUSIC ON YOUR MOBILE!!
Music is an important mobile
Content category.
Mobiles can’t compete with Ipads
True mobility immediate & direct
access to downloadable music,with
no cables or PC.
Taking games to the next level
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.
Fully integrated in browser – one click access.
Video-Conferencing
ADVANTAGES OF 3G
New radio spectrum to relieve overcrowding in
existing systems.
More bandwidth , security & reliability.
Inter-portability between services providers.
High data rates.
Rich multimedia services.
Always online devices.
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 .
Lack of buy-in by 2G mobile users for the new
3G
wireless services.
Large cell phones.
ANYTIME,ANYWHERE CONNECTION
Also known as “Mobile Broadband Everywhere” One of the terms used to describe 4G is:
MAGIC 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.
IPv6 core
Potentially IEEE standards 802.11
Only packet switching used unlike previous generations.
MIMO(Multiple In Multiple Out) replace CDMA spread spectrum
radio technology.
WHY 4G ???
Higher bandwidth enables a range of new applications! 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 / VPN access Sales force automation Video conferencing Real-time financial information
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-CDMA orOFDM(TDMA)
FEC Turbo codes concatenated codes
Switching Circuit/ Packet Packet
Top speeds 200kmph 200kmph
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 4GThe 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.
Estimation of Global Wireless Subscriber growth
Thank you