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4thGeneration Networks
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Contents
Introduction to 4G
History
Objectives of 4G
Expectations of 4GFeatures
What is needed
Wireless technoloies used!
Issues
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Short history
"echnoloy #G $G $!%G &G 4G
'esin (ean #)*+ #),+ #),% #))+ $+++
I-ple-entation #),4 #))# #))) $++$ $+#+.
/ervice 0nalo
1oice2/ynchronousdata to )!3bps
'iital voice2
short -essaes
Hiher capacity
pac5et6ied data
Hiher capacity
broadband dataupto $7bps
Hiher capacity2
co-pletely I8oriented2-ulti-edia datato hundreds of7(s
/tandards 078/2 "0C/297" etc
"'702 C'702G/72 8'C
G8:/2 E'GE2#;:""
WC'702C'70$+++
/inle standard
'ata (and
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Objectives
= Flexible channel band
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4G A70GICB!!!
Is the next co-plete evolution in
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Expectations of 4G
Will have end@to@end Internet 8rotocol AI8B2 and peer@to@peer
net
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Features
/upport for interactive -ulti-edia2 voice2 strea-in video2 Internet2 andother broadband services
I8 based -obile syste- Hih speed2 hih capacity2 and lo< cost@per@bit Global access2 service portability2 and scalable -obile services /ea-less s
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Components in 4G
Fe
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4G EPS architecture
"he core net
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Contenders
Long Term Evolution (LTE/LTE Advanced):"E is the project na-e of ane< hih perfor-ance air interface for cellular -obile co--unication syste-s! It is the last step to
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What is needed.
/ufficient spectru-2
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8rincipal technoloies
Orthoonal Freuency 'ivision 7ultiplexinAOF'7B in the do
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OFDM
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Orthogonal frequency-division multiple
access
7ulti@user version of the traditional OF'7OF'70 can be seen as an alternative to co-binin OF'7
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/oft
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7ultiple@input 7ultiple@output A7I7OB
technoloy that can carry 4 to % ti-es -ore data
traffic than todayKs -ost advanced ?7"/@
H/'80@ready A&GB net
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Others
Turbo#principle error#correcting code ($orward Error %orrection):For
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Issues ith 4G
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!han" you