FOURTH GENERATION MOBILE COMMUNICATION SYSTEMS 4G

History 3G and Its Limitations 4G Concept Key Technologies Benefits Applications Conclusion CONTENTS

History

3G and Its Limitations

4G Concept

Key Technologies

Benefits

Applications

Conclusion

Mobile System Generations First Generation (1G) mobile systems were designed to offer a single service, i.e., speech. Second Generation (2G) mobile systems were also designed primarily to offer speech with a limited capability to offer data at low rates. Third Generation (3G) mobile systems are expected to offer high-quality multi-media services and operate in different environments.

First Generation (1G) mobile systems were designed

to offer a single service, i.e., speech.

Second Generation (2G) mobile systems were also

designed primarily to offer speech with a limited capability to offer data at low rates.

Third Generation (3G) mobile systems are expected

to offer high-quality multi-media services and operate

in different environments.

S HORT H ISTORY of M OBILE T ELEPHONE T ECHNOLOGIES

T HIRD G ENERATION (3G) Major technologies Bluetooth Wireless LAN (IEEE 802.x standards) – WiFi Short range wireless communications Highly utilized and very popular: offices, airports, coffee shops, universities and schools Two basic modes of operations: - Ad-hoc networking: computers send data to one another - Access point: sending data to the base station

Major technologies

Bluetooth

Wireless LAN (IEEE 802.x standards) – WiFi

Short range wireless communications

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

Two basic modes of operations:

- Ad-hoc networking: computers send data to one another

- Access point: sending data to the base station

Limitations of 3G Difficulty of CDMA to provide higher data rates Need for continuously increasing data rate and bandwidth to meet the multimedia requirements Limitation of spectrum and it’s allocation Inability to roam between different services To provide a seamless transport end-to-end Mechanism To introduce a better system with reduces cost

Difficulty of CDMA to provide higher data rates

Need for continuously increasing data rate and

bandwidth to meet the multimedia requirements

Limitation of spectrum and it’s allocation

Inability to roam between different services

To provide a seamless transport end-to-end

Mechanism

To introduce a better system with reduces cost

4G Concept “ The user has freedom and flexibility to select any desired service with reasonable QoS and affordable price, anytime, anywhere.”

“ The user has freedom and flexibility

to select any desired service with

reasonable QoS and affordable price,

anytime, anywhere.”

Design Objectives

Next Generation will also have specifically needs to resolve it’s own multiple issues Heterogeneous networks Access, handover Location coordination, resource coordination Adding new users Support for multicasting QoS, wireless security and authentication Network failure backup Pricing and billing

Heterogeneous networks

Access, handover

Location coordination, resource coordination

Adding new users

Support for multicasting

QoS, wireless security and authentication

Network failure backup

Pricing and billing

Heterogeneous Networks

Network Selection Most Appropriate Network Selection Criteria • Service Type -Data rate -QoS • Available Resources • User Context - Environment (When and Where) - Mobility - User preferences

Most Appropriate Network Selection Criteria

• Service Type

-Data rate

-QoS

• Available Resources

• User Context

- Environment (When and Where)

- Mobility

- User preferences

Key 4G Technologies OFDM ( Orthogonal Frequency Division Multiplexing ) SDR ( Software Defined Radio ) MIMO ( Multiple-input multiple-output ) Interlayer Optimization Handover and Mobility

OFDM ( Orthogonal Frequency Division Multiplexing )

SDR ( Software Defined Radio )

MIMO ( Multiple-input multiple-output )

Interlayer Optimization

Handover and Mobility

Benefits Convergence of Cellular Mobile Networks and WLANs Benefits for Operators Higher bandwidths, Lower cost of networks and equipment,The use of licence-exempt spectrum, Higher capacity and Qos enhancement, higher revenue . Users Access to broadband multimedia services with lower cost and here mostly needed, Inter-network roaming . C onvergence of Mobile Communication and Broadcasting Benefits for Operators Cellular operators will benefit from offering their customers a range of new broadband multi-media services in vehicular environments. Users Users will benefit from faster access to a range of broadband multi- media services with reasonable QoS and lower cost.

Convergence of Cellular Mobile Networks and WLANs

Benefits for Operators

Higher bandwidths, Lower cost of networks and equipment,The use

of licence-exempt spectrum, Higher capacity and Qos enhancement,

higher revenue .

Users

Access to broadband multimedia services with lower cost and here

mostly needed, Inter-network roaming .

C onvergence of Mobile Communication and Broadcasting

Benefits for Operators

Cellular operators will benefit from offering their customers a

range of new broadband multi-media services in vehicular

environments.

Users

Users will benefit from faster access to a range of broadband multi-

media services with reasonable QoS and lower cost.

Wireless System Discovery A multimode terminal attaches to the WLAN and scans the available systems. It can download suitable software manually or automatically. .

A multimode terminal attaches

to the WLAN and

scans the available

systems.

It can download

suitable software

manually or

automatically.

Applications Virtual Presence Virtual navigation Tele-geoprocessing applications Tele-Medicine and Education Crisis management Multimedia– Video Services

Virtual Presence

Virtual navigation

Tele-geoprocessing applications

Tele-Medicine and Education

Crisis management

Multimedia– Video Services

CONCLUSION As the history of mobile communications shows attempts have been made to reduce a number of technologies to a single global standard. 4G seems to be a very promising generation of wireless communication that will change the people’s life in the wireless world. 4G is expected to be launched by 2010 and the world is looking forward for the most intelligent technology that would connect the entire globe.

As the history of mobile communications shows

attempts have been made to reduce a number of

technologies to a single global standard.

4G seems to be a very promising generation of

wireless communication that will change the

people’s life in the wireless world.

4G is expected to be launched by 2010 and the

world is looking forward for the most intelligent

technology that would connect the entire globe.

www.google.com www.en.wikipedia.org/wiki/4G www.4g.co.uk www.uscwc.com/4GReport www.four-g.net/ R EFERENCES

www.google.com

www.en.wikipedia.org/wiki/4G

www.4g.co.uk

www.uscwc.com/4GReport

www.four-g.net/

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