4 g technology
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Transcript of 4 g technology
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100Mbps-1Gbps
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INTRODUCTION
4G-4th Generation of mobile communication.
A descendant to 2G and 3G technology aiming
to provide the very high data transfer rates.
Best described in one word “MAGIC”.
MAGIC Mobile multimedia Anytime Anywhere
Global mobility support, integrated wireless
and personalized services.
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Magic of 4G Technology:
3G utilized WiMax &WiFi as separate
wireless technologies
4G is expected to coalesce these two
technologies.
4G will be able to connect various high
speed networks together.
In 4G HD data will be made available
without much of a problem over the
internet.
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History:
The 4G system was originally envisioned
by the Defense Advanced Research
Projects Agency (DARPA).
The DARPA selected the distributed
architecture and end-to-end Internet
protocol (IP), and in peer-to-peer
networking.
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Commercial Deployment:
Two 4G candidate systems are commercially
deployed:
Mobile WiMax standard
Long Term Evolution (LTE) standard
Bharti Airtel launched India's first 4G service,
using TD-LTE technology, in Kolkata on April
10, 2012.
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Why 4G over 3G?
4G (LTE) is quicker than 3G
4G holds:
less buffering
better audio quality
improved gaming experience
streaming services with reduced lag.
Our 4G Plus network uses the 1800 & 2300 MHz
frequency bands
Our 3G Plus network uses the 900 & 2100 MHz
frequency bands
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Components of 4G:
There are some components which makes the
successful 4G systems they are:
a) OFDMA
b) MIMO
c) IPv6.0
d) Spectral efficiency of 4G
e) SDR(Software Defined Radio)
f) Smart antennas
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Components (contd..)
OFDMA: Orthogonal Frequency Division Multiple
Access.
It captures entire energy
Only few signals are affected or lost in OFDM while
compared to CDMA in 3G.
MIMO(Multi Input Multi Output):
improve the communication performance between sender
and receiver
range, quality of received signal and spectrum efficiency
are high.
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Component (contd..)
IPv6.0:
Allows more address than IPv4.0
IPv6 each device have own IP address.
SDR(Software Defined Radio):
A SDR will allow increasing network
capacity at specific time.
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Components(contd..)
Smart antenna
Switched Antenna: Based on the requirement
of the system ,signal is received at any given
time.
Adaptive Antenna: Steer the signal at any
direction of interest ,nullify the interfering signal.
Switched antenna Adaptive antenna
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System Architecture:
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Work flow:
UE
eNodeB
SGW(Service gateway)
MME(Mobility Management Entity)
PDN(Packet Data network)
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3G Vs 4G
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4G working:
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Advantage of 4G:
Higher bandwidth
Better response time. 10 times better then 3G
Works at 2.6GHz frequency
Less time to build 4G
It use the same tower and fiber cables as 3Gs -
they only have to upgrade the towers with 4G
components.
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Disadvantage of 4G:
New technology which makes it more
expansive than 3G
It is impossible to make our current
equipment to be compatible with 4G.
It is available in certain cities within
US.
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Application:
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4G future:
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4G will bring a great revolution in mobile
communication.
The future of 4G is nothing but 5G.
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Conclusion:
4G technologies was still at research stages
in many of the countries.
Companies like NTT Do Como Mobile and
Nortel Networks, and Nokia Siemens
Networks successfully demonstrated the
working of4G.
This technology will be deployed in the world
market soon.
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4G can be quoted as:
“Every one, Anytime & Every Where”
BY,I.MADHUMITHAHT.AMUTHARINIII M.Sc(CS).,
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