4G Cellular Communication

8/6/2019 4G Cellular Communication

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SEMINAR TOPIC

4G CELLULAR COMMUNICATION4G CELLULAR COMMUNICATION

PRESENTED BY

(BCA-16)

Manasvi Mehta

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INTRODUCTION

The Fourth Generation Of Cellular CommunicationSystem, Generally known as 4G. It Is The Emerging

Technology Of Current Wireless Networks.

Domain Of 4G Is Extend Beyond 1G,2G,3G .

4G service at 100 Mbit/s for high mobility communication

(such as from trains and cars) and 1 Gbit/s for low

mobility communication (such as pedestrians and

stationary users).

One of the terms used to describe 4G is MAGICMobile

multimedia, Anytime anywhere, Global mobility support,

Integrated wireless solution, and Customized personal

service. 3


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PROBLEM WITH THE EXISTING SYSTEM

The current cellular network does not have the available

bandwidth necessary to handle data services well. Not only is

data transfer slow but the bandwidth that is available is not

allocated efficiently for data.

3G systems still have inherent flaws. They are not well-

designed for data. They are improvements on a protocol that

was originally designed for voice.

4G protocols use spectrum up to 3 times as efficiently as 3G

systems, have better ways of handling dynamic load changes ,

and create more bandwidth than 3G systems.

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A View OF 4G

One of the terms used to describe 4G is MAGICMobile

multimedia, Anytime anywhere, Global mobility support,

Integrated wireless solution, and Customized personal service.

4G is not necessarily defined by the bit rate, but by a significant

advance in system capability beyond what can be achieved with3G.

A 4G system is expected to provide a comprehensive and secure

all-IP based mobile broadband solution to laptop, computer

wireless modems, smart phones, and other mobile devices.

Pre-4G technologies such as mobile WiMAX and Long Term

Evolution(LTE) have been on the market since 2006 and 2009

respectively, and are often branded as 4G.

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A Vision OF 4G Technology6


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Some Key Challenges

COVERAGE

Transmit power limitations and higher frequencies limit the

achievable cell size.

CAPACITY

Current air interfaces have limited peak data rate, capacity, and

packet data capability.

SPECTRUM

Location and availability are key issues.

Lower carrier frequencies (< 5 GHz) are best for wide-area

coverage and mobility. 7


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4G System Research Areas

Adaptive

Antennas for

Broadband

Broadband

Air Interface

Research

Broadband

Implementations

4G System Design

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PRIMARY BENEFIT

IMPROVED COVERAGE HIGHER CAPACITY

ASSYMETRIC DATA RATE

HIGH POWER BTS

LOWER FREQUENCY

SMALL CELLS

ADAPTIVE ANTENNAS

Advanced Air Interface and

Link Adaptation

POTENTIAL COVERAGE AND CAPACITY SOLUTION

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Data Rate Comparison

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4G is not one defined technology or standard ,but rather a collection

of technologies and protocol aimed at creating fully packet

switched networks optimized for data.

4G Networks are projected to provide 100 Mbps while moving and 1

Gbps while stationary.

4G infrastructure will consist of a set of various networks using IP as a

common protocol so that users are in control because they will be able

to choose every application and environment.

Based on the developing trends of mobile communication, 4G have

broader bandwidth, higher data rate, and smoother and quicker

handoff and will focus on ensuring seamless service across a multitude

of wireless systems and networks.

Conclusion

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Application adaptability and being highly dynamic are the

main features of 4G services of interest to users.

The 4G systems interoperate with 2G and 3G systems, as well

as with digital (broadband) broadcasting systems.

In addition, 4G systems is fully IP-based wireless Internet.

The features of 4G systems might be summarized with one

wordintegration.

The 4G systems are about seamlessly integrating terminals,

networks, and applications to satisfy increasing user

demands.

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4G Cellular Communication

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