Ffinal Ppt on 4G

8/8/2019 Ffinal Ppt on 4G

1/22

4G

TECHNOLOGY

xyz


2/22

Introduction

4G is aninitialism oftheterm Fourth-Generation

Communications System.

A 4G system will provide anend-to-endIP

solution wherevoice,data andstreamed

multimedia can beservedtouserson an

"Anytime,Anywhere" basis athigherdata rates

than previousgenerations.

Noformal definitionisset asto what 4G is, but

theobjectivesthat are predictedfor4G can be

summarized asfollows:


3/22

Thefollowing aresome possiblefeaturesofthe 4G systems:

Supportinteractivemultimedia,voice,video, wirelessinternet andotherbroadbandservices.

Highspeed,highcapacity and low cost perbit.

Global mobility,service portability,scalablemobilenetworks.

Seamlessswitching,variety ofservices basedon Quality ofService(QoS) requirements

Better scheduling andcall admissioncontrol techniques.

Adhocnetworks andmulti-hop networks.

Introduction -contd


4/22

Introduction - contd


5/22


6/22


7/22


8/22


9/22


10/22

Technology - parametersof

3G Vs 4G

Attribute 3G 4G

MajorCharacteristicPredominantly voice- data as

add-onConvergeddata and VoIP

Network Architecture Widearea Cell based Hybrid integrationofWirelessLan (WiFi),Blue Tooth,WideArea

Frequency Band 1.6- 2.5 GHz 2 8 GHz

Component DesignOptimized antenna; multi-band

adapters

Smart antennas; SWmulti-band;

widebandradios

Bandwidth 5 20 MHz 100+ MHz

Data Rate 385 Kbps- 2 Mbps 20 100 Mbps

Access WCDMA/CDMA2000 MC-CDMAorOFDMForward ErrorCorrection Convolutioncode 1/2, 1/3; turbo Concatenated Coding

Switching Circuit/Packet Packet

Mobiletop Speed 200kmph 200kmph

IP Multipleversions All IP (IPv6.0)

Operational ~2003 ~2010


11/22

Architecture


12/22

Architecture - contd


13/22

Challenges

4G definition Aglobal consensusonthe 4G definitionisneeded beforethe

standardizationstarts.

Despiteeffortstherestill aretoomany diverging approachedto4G.

Seamlessconnectivity Inter- andintra-networkconnectivity isfundamental tothe

provisionoftemporally andspatially seamlessservices.

Vertical andhorizontal handovers arecritical for4G.Intheformercase,theheterogeneity andvariety ofnetworksexacerbatethe problem.

Latency Many 4G services aredelay sensitive.

Guaranteeingshortdelaysinnetworks withdifferent accessarchitecture andcoverageisfarfromstraightforward.


14/22

Challenges -

contd Concealingcomplexity 4G networks would beundoubtedly complex, butthisneedsto

behiddenfromtheuser.

Spectrumissues

Spectrumfor4G will be allocatedin2007. Itisdifficulttodesign a wirelesssystem withoutknowingthechannel,in particularifexploitmulti-antenna technology.

Complex resource allocation Managementoftime,frequency andspatial resourcesin a multi-

network,multi-userenvironmentisfarfromtrivial.

Interference Multiple accessinterferencecontrol andmitigationin

heterogeneousenvironments (coexisting airinterfaces,variedterminals andservices) is anissue.


15/22

Challenges -

contd Powerconsumption By any measure, powerconsumptioninfuturemulti-

functionmulti-standard 4G terminals will sharplyincrease.

Usability isseriously compromised,heatmanagementbecomes anissue.

Cost Costofinfrastructureiskey forthesuccessof4G.

However,new access architecturesmay require alargenumberofaccess points.

Costofterminal should be low enoughto attractcustomers.

Servicesneedto be attractively priced.


16/22


17/22


18/22


19/22

Development

A Japanesecompany has beentesting a 4Gcommunicationsystem prototype at 100Mbit/s whilemoving, and 1 Gbit/s whilestationary. Recentlyreached5 Gbit/smoving at 10km/h, andis planningonreleasingthefirstcommercial networkin2010.

AnIrishcompany has announcedthatthey havereceived a mobilecommunications licensefromIrishTelecomsregulator. Thisservice will beissuedthemobilecode088 inIreland and will beusedfortheprovisionof4G Mobilecommunications.

Sprint plansto launch 4G servicesintrial markets by

theendof2007 with planstodeploy a networkthatreaches asmany as 100million peoplein2008


20/22

Conclusion


21/22

Sourcesontopic

Web Link Wikipedia title: 4G

http://en.wikipedia.org/wiki/4G National Science Foundation

http://www.nsf.gov Groups working on 4G : WWRF , projects funded by NSF , Lucent , AT&T, Motorola, etc.

http://www.wireless-world-research.org/ 4G Wireless Systems

http://users.ece.gatech.edu/~jxie/4G 4G Wireless Standard

http://www.nd.edu/~mhaenggi/NET/wireless/4G/ IEEE:

http://www.ieee.org IEEE Communications Society:

http://www.comsoc.org/index.html International Telecommunications Union:

http://www.itu.org Association of Computer Machinery:

http://www.acm.org European Telecommunications Standard Institue:

http://ww.etsl.org 3Gpp partnership project:

http://www.3gpp.org Internet Engineering Task Force:

http://www.ietf.orgB Bluetooth official website:

htt ://www.bluetooth.com


22/22

THANK YOU

Documents

Ffinal Ppt on 4G