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4G WIRELESS COMMUNICATION SYSTEMS

BY Department of Electronics and

Communication Anuraj Anand

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AGENDA Introduction Objectives of 4G Features of 4G Key technologies of 4G Services of 4G Challenges in Implementing 4G Conclusion

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COUNTDOWN TO TRUE WIRELESS BROADBAND!!(WHY 4G??)

User requirements are growing faster than ever

The limitations of the 3G mobile communication systems

Many technologies like VoIP, broadband data access in mobile environment etc..

Need of deploying technologies that can integrate all these systems into a single unified system.

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Objectives of 4G(BWA) Fully IP based integrated system Capability to provide speed between

100 Mbps to 1 Gbps ( both indoor and outdoor) with premium quality and high security.

A single worldwide celluar network completley standardized based on the IP for video, Voice over IP (VoIP)

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THE EVOLVING G’S

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Comparison of wireless communication technologies

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Limitations and difficulties of 3G Technologies Difficulty in continuously increasing bandwidth and

high data rate to meet multimedia services requirements, together with the coexistence of different services needing different QoS and bandwidth.

Limitations of spectrum and its allocation Difficult to roam across distinct service environment

in different frequency bands. Lack of end-to-end seamless transport mechanism

spanning a mobile sub-network and fixed one.

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What is 4G

• It is 4th generation wireless technology.• It will provide a comprehensive IP

solution where voice, data and multimedia can be given to user on “any time , anywhere” basis.

• It includes several types of broadband wireless communication system access including celluar telephone system.

• It will provide seamless mobility and internet access at a rate of 100 Mbps.

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Seamless connections of network

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Features of 4G Technology• High performance• Interoperability and easy roaming• Fully converged services• Low cost• Devices :more user friendly• Enhanced GPS Services• Scalabilty• Crisis Management application

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Key Elements of 4G

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MAGIC Mobile multimedia, anytime anywhere , global mobility support, integrated wireless solution customized personal service.

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4G Technologies truly broadband wireless access• LTE release 10• 802.16M WiMAX

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LTE and WiMAX

Long term evolutionAdvantages1. It is quite fast with data rates of

100Mbps(download) and 50Mbps (upload)2. It can heal the GSM/CDMA rift that has divided

the industry3. LTE will have lower latency ,which makes real

time interaction WiMax1.Technology Considered as a part of pre 4G2.Worldwide interoperability for microwave

access3.Technology for wirelessly delivering high speed

internet to large geographical areas

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WIMAX base stations

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WIMAX equipment

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Major aspects in migration to 4G Multimode user terminals Selection among various wireless

systems Security Network infrastructure and Qos support Charging/Billing Attacks on application level Jamming and spoofing Data encription

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4G Applications• Virtual Presence• Virtual Navigation• Tele Geo-processing applications• Tele Medicine and Education• Crisis Management• Multimedia Services

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Conclusion

• 4G systems offer to reduce a number of technologies to a single global standard.

• Future networks need to support diverse IP multimedia applications to allow sharing of resources among multiple users.

• 4G fulfilled the goal of PCC ( personal computing and communication ).