3G Wireless3G Wireless

Raman Raman sanoriasanoria

IntroductionIntroduction

Imagine the possibilities of Imagine the possibilities of connectivity!connectivity!

Scenarios:Scenarios:– Traveler from New York to TokyoTraveler from New York to Tokyo– Insurance appraiser at the scene of a Insurance appraiser at the scene of a

natural disasternatural disaster– Paramedics capturing visuals of a victim’s Paramedics capturing visuals of a victim’s

injuriesinjuries

Evolution of Wireless Evolution of Wireless SystemsSystems Radio telephony during World War IRadio telephony during World War I Wireless telephones in late 1940’s Wireless telephones in late 1940’s

– Provided only basic half-duplex voiceProvided only basic half-duplex voice– Used analog technologyUsed analog technology

Evolved into full-duplex 1G systems in Evolved into full-duplex 1G systems in the 1960’sthe 1960’s

From 1G to 3G…From 1G to 3G…- 1G -- 1G -

Started in the early to mid 1960’s Started in the early to mid 1960’s offering simple wireless voice services offering simple wireless voice services based on analog technologybased on analog technology

Were very limited in capacity and did Were very limited in capacity and did not extend across geographic areasnot extend across geographic areas

Systems using 1G : Systems using 1G : AMPS, TACS, and NMTAMPS, TACS, and NMT

From 1G to 3G…From 1G to 3G…- 2G -- 2G -

Developed in Europe and the US to provide Developed in Europe and the US to provide better voice quality, higher capacity as well better voice quality, higher capacity as well as lower power consumptionas lower power consumption

Offer support for simple non-voice services Offer support for simple non-voice services like SMS (simple messaging service)like SMS (simple messaging service)

2G technologies do not interoperate2G technologies do not interoperate Difficult roaming between countries using Difficult roaming between countries using

different systemsdifferent systems Cannot meet subscriber demands for new, Cannot meet subscriber demands for new,

faster non-voice services on the movefaster non-voice services on the move

What is 2.5G Wireless?What is 2.5G Wireless?

Also known as Interim GenerationAlso known as Interim Generation GPRS (General Packet Radio service) & GPRS (General Packet Radio service) &

EDGE (Enhanced Data rate for GSM EDGE (Enhanced Data rate for GSM Evolution)Evolution)– Provides options for higher data rate Provides options for higher data rate

while building on existing 2G systemswhile building on existing 2G systems GPRS -> 171.2 kbps theoretical max bit rateGPRS -> 171.2 kbps theoretical max bit rate EDGE -> 384 kbps bit rateEDGE -> 384 kbps bit rate

3G Wireless Systems3G Wireless Systems

3G Wireless Systems are the new 3G Wireless Systems are the new generation of systems that offer high generation of systems that offer high bandwidth and support digital voice along bandwidth and support digital voice along with multimedia and global roaming.with multimedia and global roaming.

Globally, different systems are being used, Globally, different systems are being used, so, to migrate to globally acceptable so, to migrate to globally acceptable systems, numerous standardization activities systems, numerous standardization activities were carried out and three systems were carried out and three systems emerged: W-CDMA, CDMA2000, and TD-emerged: W-CDMA, CDMA2000, and TD-SCDMASCDMA

3G System Capabilities3G System Capabilities

•Capabilities to support circuit and packet data at high Capabilities to support circuit and packet data at high bit rates:bit rates:

•144 kilobits/second or higher in mobility (vehicular) traffic144 kilobits/second or higher in mobility (vehicular) traffic•384 kilobits/second for pedestrian traffic384 kilobits/second for pedestrian traffic•2 Megabits/second or higher for indoor traffic2 Megabits/second or higher for indoor traffic

•Interoperability and roamingInteroperability and roaming•Common Billing/User ProfilesCommon Billing/User Profiles

•Sharing of usage/rate information between service providersSharing of usage/rate information between service providers•Standardized call detail recordingStandardized call detail recording•Standardized user profilesStandardized user profiles

•Capability to determine geographic position of mobiles Capability to determine geographic position of mobiles and report it to both the network and the mobile terminaland report it to both the network and the mobile terminal

•Support of Multimedia Services/CapabilitiesSupport of Multimedia Services/Capabilities•Fixed and variable rate bit trafficFixed and variable rate bit traffic•Bandwidth on demandBandwidth on demand•Asymmetric data rates in the forward and reverse linksAsymmetric data rates in the forward and reverse links•Multimedia mail store and forwardMultimedia mail store and forward•Broadband access up to 2 Megabits/secondBroadband access up to 2 Megabits/second

3G System Capabilities ….3G System Capabilities ….

The Road to 3G

2G 2.5G 3G

Communication services

•Video telephony

•Video conference

•Personal location (GPS)

Education

•Virtual schools

•On-line science lab

•On-line library

•On-line language labs

•Training

Applications Using 3GApplications Using 3G

Finance services

•Virtual banking

•On-line billing

•Universal USIM and credit card

Business services

• Mobile office

•Narrowcast business TV

•Virtual workgroups

•Expertise on tap

Entertainment

•Audio on demand

•Games

•Video clips

•Virtual sightseeing

Applications Using 3G…Applications Using 3G…

3G 4GFrequency

Band1.8 - 2.5 GHz 2 - 8 GHz

Bandwidth 5 - 20 MHz 5 - 20 MHz

Data RateUp to 2 Mbps (384

Kbps deployed)Up to 20 Mbps

AccessW - CDMA / CDMA 2000 / TD -SCDMA

MC - CDMA or OFDMA (TDMA)

Switching Circuit / Packet Packet

Mobile top speeds

200 Km/h 200 Km/h

Key Parameters of 3G and 4G SystemsKey Parameters of 3G and 4G Systems

ConclusionConclusion

3G technologies promise to deliver a lot and are 3G technologies promise to deliver a lot and are slowly being put into effect. slowly being put into effect.

We have already started seeing the early We have already started seeing the early features of 3G technologies being implemented features of 3G technologies being implemented in our phones, i.e., the video phones in the in our phones, i.e., the video phones in the market.market.

It remains to be seen how much of the It remains to be seen how much of the promised features and applications are actually promised features and applications are actually implemented in today’s economy. implemented in today’s economy.

However, they have been slow in coming in. However, they have been slow in coming in. Let’s see what the future holds…Let’s see what the future holds…

Thank You!Thank You!

Raman sanoria