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GSM and Evolution of Mobile Networks

GSM is a digital cellular technology used for transmitting mobile voice and data services. It was developed in the early 1990s and introduced digital modulation to improve audio quality over first-generation analog mobile networks. 2G networks enabled limited data services while 2.5G networks provided faster data speeds up to 144 kbps for early email and web access from phones. 3G networks supported broadband data speeds up to 2 Mbps for services like video calls and streaming. 4G networks, currently being deployed, provide speeds up to 100 Mbps for mobile multimedia services anywhere through integrated wireless technologies.

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63 views15 pages

GSM and Evolution of Mobile Networks

GSM is a digital cellular technology used for transmitting mobile voice and data services. It was developed in the early 1990s and introduced digital modulation to improve audio quality over first-generation analog mobile networks. 2G networks enabled limited data services while 2.5G networks provided faster data speeds up to 144 kbps for early email and web access from phones. 3G networks supported broadband data speeds up to 2 Mbps for services like video calls and streaming. 4G networks, currently being deployed, provide speeds up to 100 Mbps for mobile multimedia services anywhere through integrated wireless technologies.

Uploaded by

Goran
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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CHAPTER ONE

Introduction to the Global System for Mobile Communication


(GSM)

Prepared by : Goran Wnis

1
What is GSM?
• GSM stands for Global System for Mobile Communication. It is a
digital cellular technology used for transmitting mobile voice and
data services.

• GSM uses Wireless Technology.

• Wireless : is the transfer of information (Voice call and Data)between


two or more points that are not connected by an electrical conductor
or wire.

2
Generation of Mobile Wireless Communications

3
1G Wireless Technology
• The first mobile networks in the early 1980s were analog
modulation systems:
• AMPS (Advanced Mobile Phone System) in the USA.

• TACS (Total Access Communications System) in the UK.

• C-Netz in Germany.

• Radiocom 2000 in France.

• NMT in Scandinavia.

• These networks were planned to achieve maximum coverage with as


few antennas as possible.

4
1G Wireless Technology

 In early networks, the emphasis was to provide radio coverage with little
consideration for the number of calls to be carried. As the subscriber base grew, the
need to provide greater traffic capacity had to be addressed.

5
Drawbacks of 1G Wireless Technology

• Poor voice quality


• Poor battery life
• Large phone size
• No security
• Frequent call drops
• Limited capacity and poor handoff
• Reliability.

6
2G Wireless Technology
 2G phones using global system for mobile communications (GSM) were first
used in the early 1990s 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:

7
Drawbacks of 2G Wireless Technology

8
2.5G WIRELESS

Features includes:-
• Phone calls/ Fax
• Voice mail
• Send/Receive e-mail messages
• web browsing
• camera phones
• speed: 64-144 kb/sec
• Time to download a 3 min MP3 song: 6-9 min

9
• To meet the growing demand in network capacity, rates required for high speed

data transfer and multimedia applications , 3G standards started evolving.

• 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

10
 Features include :
• 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
11
 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.

12
• simply rebroadcast of TV or website

• live streams , video , image & text

• content , voting , messaging.

• User interaction on multiple levels.

• Fully integrated in browser – one click access.

13
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.

14
• 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
• Only packet switching used unlike previous generations.
• MIMO(Multiple In Multiple Out) replace CDMA spread spectrum radio technology.

15

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