2G..

INTRODUCTION TO

WELCOME

1G.

3G…

4G.…MOBILES

1G WIRELESS TECHNOLOGY

Using Analog signals Listen to handset Frequency typically 150MHz & above

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

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.

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 Ipods etc.

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

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

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.

4G 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. 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.

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 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.

CDMA (1XEV-DO)Korea: SKT, KTFJapan:AV(KDDI)

WCDMA / UMTSJapan: NTT DoCoMo, Vodafone KK

Australia:3HutchinsonHongkong:3Hutchinson

CS-VI th B

Ankush GoyalNIET