4g wireless technology شبكات الجيل الرابع كتاب في غاية الاهمية

4G -WIRELESS TECHNOLOGY4G -WIRELESS TECHNOLOGY

Contents

Introduction Evolution of Processors and DSP Technology for 4G Beyond 3G Why 4G ? Principle Technologies Features of the 4G systems ITU’s Vision of IMT 4G Architecture 4G Networks Difference between 3G and 4G Advantages & Disadvantage Future Outlook Conclusion Bibliography

Introduction

Definition : According to the Wireless World Research Forum

(WWRF),4G is a combination of wired and wireless networks in computer, consumer electronics and communication technology systems based on the internet technology that can merge applications like the Wi-Fi and Wi-MAX capable of transmitting at a speed ranging from 100 Mbps(in cell-phone networks) to 1Gbps(in local Wi-Fi networks). It is also known as “beyond 3G,"

Evolution of 4G Technology

Beyond 3G

Affordable broadband communication everywhere and on the move.

All-IP network for all applications – voice, messaging and multimedia.

Beyond 3G

Why 4G ?

Business Need and Opportunity Technology Pull Rate of Innovation Disruptive Technologies Standardization New Revenue Opportunities Validation of Radio Technologies Cost and Availability of Spectrum Ecosystem Development

Principle Technologies

OFDM : To exploit the frequency selective channel property.

MIMO : To attain ultra high spectral efficiency.

UMTS : Universal Mobile Telecommunication System.

SMART ANTENNAS , SDR

Adaptive radio interface Modulation, spatial processing including multi-

antenna and multi-user MIMO

Features of the 4G system

Support interactive multimedia, voice, video, wireless internet and other broadband services.

High speed, high capacity and low cost per bit. Global mobility, service portability, scalable

mobile networks. Better scheduling and call admission control

techniques. Seamless switching, variety of services based on

Quality of Service (QoS) requirements. Ad hoc networks and multi-hop networks.

4G Applications

Fully integrated IP solution “Anytime, Anywhere”.

4G is capable of providing users with streaming High definition television.

Global access and interconnection.

Data rates of at least 100Mbps.

Seamless connectivity - wireless and wire-lines.

ITU’s Vision of IMT-Advanced Providing Service Continuity

4G NETWORKS

NIT DoCoMo

(Japan) SPRINT NEXTEL

(Europe) DiGiWeb (Irish Co) TELUS & BELL

(Canada) VERIZON WIRELSS

(US)

4G Broadband Services

Low cost

Coverage of Wide Area

Wide Variety of Services Capability

Capacity and performance improvement

Innovative wireless technologies

Key Attributes of 4G

Support for Multiple Applications and Services

Quality of Service

Network Detection and Network Selection

Seamless Handover and Service Continuity

Technology and Topology Independence

3G & 4GAttribute 3G 4G

Speed (Data Rate) 385 Kbps - 2 Mbps 20 – 100 Mbps

Frequency Bandwidth 1.6 - 2.5 GHz 2 – 8 GHz

Access WCDMA/CDMA 2000 MC-CDMA or OFDM

Bandwidth 5 – 20 MHz 100+ MHz

Switching Circuit/Packet Packet

Component Design Optimized antenna, Multi- band adapters

Smart antennas, SW Multi-band, Wideband

radios

4G Coverage & Performance

Advantages Affordable cost

High network capacity more simultaneous users per cell.

A data rate of at least 100 Mbit/s between any two points in the world.

User has freedom and flexibility to select the service at a reasonable price and QoS, anytime, anywhere.

Seamless connectivity and global 7-8 across multiple networks.

Disadvantages

Battery usage is more

Hard to implement

Need complicated hardware

Future Outlook WiMAX First 4G Technology Standardization of wireless networks 4G Multi-Biometric Platform

WiMAX First 4G Technology WiMAX is defined as "Worldwide Interoperability for

Microwave Access" by the WiMAX Forum. It was formed in June 2001 to promote conformance and

interoperability of the IEEE 802.16 standard officially known as Wireless MAN.

WiMAX aims to provide wireless data over long distances, in a variety of different ways, from point to point links to full mobile cellular type access.

WiMAX service providers covering 430 million people globally in 135 countries today.

4G at a 3G price Speeds of up to 100 Mbps Customer satisfaction.

WiMAX Service Concept

4G Multi-Biometric Platform

Interoperability

Scalability

Modularity

Flexibility

Expandability

Open Standards

CONCLUSION

4G is showing tremendous promise and has the capacity to revolutionize our world.

High Speed, Capacity, low cost per bit

Single worldwide cellular network

Scope of wireless networks is expanding.

Bibliography

www.google.com www.wikipedia.com www.technologyworld.com www.remon-4g.org.il http://www.ieee-infocom.org www.nmscommunications.com www.networkworld.com/news http://www.cefriel.it/topics/ http://www.nd.edu/NET/wireless/4G http://www.nsf.gov http://www.wireless-world-research.org

Thank You

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