forth generation network-1g 2g 3g

8/6/2019 Forth Generation Network-1G 2G 3G

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Third Generation (3G)Third Generation (3G)

Major technologiesMajor technologies

BluetoothBluetooth Wireless LANWireless LAN (IEEE 802.x standards)(IEEE 802.x standards) WiFiWiFi

Short range wireless communicationsShort range wireless communications

Highly utilized and very popular: offices, airports,Highly utilized and very popular: offices, airports,coffee shops, universities and schoolscoffee shops, universities and schools

Two basic modes of operations:Two basic modes of operations:

-- AdAd--hoc networking: computers send data to onehoc networking: computers send data to oneanotheranother

-- Access point: sending data to the base stationAccess point: sending data to the base station

UMTS Main Requirements (3UMTS Main Requirements (3 MMs)s)

nn MMultiulti--mediamedia

nn MMultiulti--environmentenvironment

nn MMultiulti--operatoroperator Virtual operatorsVirtual operators

VideoConference

(High quality)

VideoConference

(Low quality)

Telephone

Conference

Telephone

VoiceMail

ElectronicMail

FAX

Electronic

Publishing

Electronic

Newspaper

ISDNKaraoke

Video

Catalogshopping

Database AccessRemote medical

service(Medical image) Video on

demand

-Sports-News-Movies

Mobile TV

MobileRadio

Image

Data

Voice

Multicast

Multi Point

AsymmetricSymmetric

Point to Point

Broadcast

2M

384K

64K

32K

16K

9.6K

2.4K

1.2K

News

Weatherforecast

Trafficinformation

Sportsinformation

LeisureInformation

Mobile Multimedia

WWW

e-mail

ftp

IP

telephony

etc

Information

Distribution

Services

Internet

Access

pager

Mobile Multimedia ServicesMobile Multimedia Services

Various Existing and EmergingVarious Existing and Emerging

Wireless TechnologiesWireless Technologies


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CConvergenceonvergence ofofHHighigh SSpeedpeed IInternetnternet && MMobilityobility

aa MMajorajor DDriver ofriver ofFFutureuture WWirelessireless

The Wireless Industry has grown at enormous paceThe Wireless Industry has grown at enormous pace

over the past decade.over the past decade.

More than a billion subscribers to cellular servicesMore than a billion subscribers to cellular services

are enjoying the benefits of staying connected whileare enjoying the benefits of staying connected while

on the move.on the move.

With the growth in Internet, a wide range of servicesWith the growth in Internet, a wide range of services

are accessed by users through a wired infrastructure.are accessed by users through a wired infrastructure.

The introduction of mobile Internet brought about byThe introduction of mobile Internet brought about by

the convergence of Mobile & Internet technologies isthe convergence of Mobile & Internet technologies is

the future objective.the future objective.

Limitations of 3GLimitations of 3G

Difficulty of CDMA to provide higher data ratesDifficulty of CDMA to provide higher data rates

Need for continuously increasing data rate andNeed for continuously increasing data rate andbandwidth to meet the multimedia requirementsbandwidth to meet the multimedia requirements

Limitation of spectrum and itLimitation of spectrum and its allocations allocation

Inability to roam between different servicesInability to roam between different services

To provide a seamless transport endTo provide a seamless transport end--toto--end mechanismend mechanism

To introduce a better system with reduces costTo introduce a better system with reduces cost

The user has freedom and flexibilityThe user has freedom and flexibility

to select any desired service withto select any desired service with

reasonablereasonable QoSQoSandandaffordable price,affordable price,

anytime, anywhere.anytime, anywhere.

4G Concept4G ConceptDesign ObjectivesDesign Objectives


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Next Generation will also have specificallyNext Generation will also have specifically

needs to resolve itneeds to resolve its own multiple issuess own multiple issues

Heterogeneous networksHeterogeneous networks

Access, handAccess, handoverover

Location coordination, resourceLocation coordination, resource coordinationcoordination

Adding new usersAdding new users

Support for multicastingSupport for multicasting

QoSQoS, wireless security and authentication, wireless security and authentication Network failure backupNetwork failure backup

Pricing and billingPricing and billing

Internet

IPIPv6v6 backbonebackbone

BillingBillingSignallingSignalling

GatewayGateway

UMTSUMTS

Broadcast NetworksBroadcast Networks

(DAB, DVB(DAB, DVB--T)T)

Satellite FESSatellite FES

GSM / GPRSGSM / GPRS

IPIP--basedbased

micromicro--mobilitymobility WirelessWirelessLANsLANs

ISPISPSIP ProxySIP Proxy

ServerServer

HeterogeneousHeterogeneous NNetworksetworks

Network SelectionNetwork Selection

Most Appropriate Network Selection CriteriaMost Appropriate Network Selection Criteria

User Context

Service Type

Available Resources

- Data rate

- QoS

- Environment (When and Where)- Mobility

- User preferences

TechnologiesTechnologies

Challenges:

Convergence/integration/inter-working of allexisting and emerging fixed and mobile

(wired and wireless) networks including

broadcast

Simple to select and easy to use desired

services

Universal and low cost terminals

IP

Technology

Agent

Technology

ReconfigurableReconfigurable

TechnologyTechnology


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A multimodeA multimodeterminal attachesterminal attaches

to the WLAN andto the WLAN and

scans the availablescans the available

systems.systems.

It can downloadIt can download

suitable softwaresuitable softwaremanually ormanually or

automatically.automatically.

Wireless System DiscoveryWireless System Discovery ReRe--configurable Technologyconfigurable Technology

In order to use the large variety of services and wirelessIn order to use the large variety of services and wireless

networks, multimode user terminals are essential as theynetworks, multimode user terminals are essential as they

can adapt to different wireless networks by reconfiguringcan adapt to different wireless networks by reconfiguring

themselves.themselves.

This eliminates the need to use multiple terminalsThis eliminates the need to use multiple terminals

(or multiple hardware components in a terminal).(or multiple hardware components in a terminal).

The most promising way of implementing multimodeThe most promising way of implementing multimodeuser terminals is to adopt the software radio approach.user terminals is to adopt the software radio approach.

An ideal software radio receiverAn ideal software radio receiverReRe--configurable Technologyconfigurable Technology

ChallengesChallenges::

Regulatory and Standardisation issuesRegulatory and Standardisation issues

Business modelsBusiness models

User preference profilesUser preference profiles

InterInter--system handover mechanisms and criteriasystem handover mechanisms and criteria

Software download mechanismsSoftware download mechanisms

Flexible spectrum allocation and sharing between operatorsFlexible spectrum allocation and sharing between operators


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CONCLUSIONCONCLUSION

As the history of mobile communications shows,As the history of mobile communications shows,attempts have been made to reduce a number ofattempts have been made to reduce a number of

technologies to a single global standard.technologies to a single global standard.

4G seems to be a very promising generation of4G seems to be a very promising generation ofwireless communication that will change the peoplewireless communication that will change the peoplesslife in the wireless world.life in the wireless world.

4G is expected to be launched by 2010 and the world4G is expected to be launched by 2010 and the worldis looking forward for the most intelligent technologyis looking forward for the most intelligent technologythat would connect the entire globe.that would connect the entire globe.

forth generation network-1g 2g 3g

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