This is a basic ppt on 4G wireless communication systems.

1.  4G WIRELESS COMMUNICATION SYSTEMS
 BY
 Department of Electronics and
Communication
 Anuraj Anand
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2. AGENDA
 Introduction
 Objectives of 4G
 Features of 4G
 Key technologies of 4G
 Services of 4G
 Challenges in Implementing 4G
 Conclusion
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3. 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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4. 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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5. THE EVOLVING G’S
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6. Comparison of wireless
communication technologies
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7. 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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8. 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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9. Seamless connections of
network
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10. 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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11. Key Elements of 4G
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12. MAGIC
 Mobile multimedia,
 anytime anywhere ,
 global mobility support,
 integrated wireless solution
 customized personal service.
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13. 4G Technologies truly
broadband wireless access
• LTE release 10
• 802.16M WiMAX
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14. LTE and WiMAX
Long term evolution
Advantages
1. 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
industry
3. LTE will have lower latency ,which makes real time
interaction
WiMax
1.Technology Considered as a part of pre 4G
2.Worldwide interoperability for microwave access
3.Technology for wirelessly delivering high speed internet to
large geographical areas
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15. WIMAX base stations
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16. WIMAX equipment
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17. 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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18. 4G Applications
• Virtual Presence
• Virtual Navigation
• Tele Geo-processing applications
• Tele Medicine and Education
• Crisis Management
• Multimedia Services
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19. 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 ).
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