Transcript Slide 1

Network Structure
of
3rd Generation
Content
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What is the 3G ?
What are the features of 3G?
Radio interfaces of 3G
W-CDMA
CDMA2000
UMTS
EDGE
WCDMA (Wide Code Division Multiple Access)
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DS-CDMA
Wide Band Services
3GPP
Then WCDMA
5 Mgh wide band
Voice,data,image,video
TDD (same frequency)
FDD (sperated frequency)
2 Mbps (local area access)
384 Kbps (wide area access)
WCDMA & GSM
CDMA2000
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Multible Access Shame
mobile digital radio technology
Delivers data and voice
CDMA2000 1x(1.25Mhz radio chanel)
CDMA2000 3x (3.75Mhz radio chanel)
UMTS (Universal Mobile Technology System)
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3GSM
3G+GSM
Faster Than GSM
384kbit/s to 1920kbit/s
Video Conferance
Watching Video
EDGE( Enhanced Data rates for GSM Evolution )
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increased data transmission
Enlarge bandwidth
transmission reliability
Between 100 and 380 kbit
Encryptiont