Upload
manasvi-mehta
View
229
Download
1
Embed Size (px)
Citation preview
8/6/2019 4G Cellular Communication
1/13
1
8/6/2019 4G Cellular Communication
2/13
SEMINAR TOPIC
4G CELLULAR COMMUNICATION4G CELLULAR COMMUNICATION
PRESENTED BY
(BCA-16)
Manasvi Mehta
2
8/6/2019 4G Cellular Communication
3/13
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
8/6/2019 4G Cellular Communication
4/13
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.
4
8/6/2019 4G Cellular Communication
5/13
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.
5
8/6/2019 4G Cellular Communication
6/13
A Vision OF 4G Technology6
8/6/2019 4G Cellular Communication
7/13
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
8/6/2019 4G Cellular Communication
8/13
4G System Research Areas
Adaptive
Antennas for
Broadband
Broadband
Air Interface
Research
Broadband
Implementations
4G System Design
8
8/6/2019 4G Cellular Communication
9/13
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
9
8/6/2019 4G Cellular Communication
10/13
Data Rate Comparison
10
8/6/2019 4G Cellular Communication
11/13
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
11
8/6/2019 4G Cellular Communication
12/13
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.
12
8/6/2019 4G Cellular Communication
13/13
13