1 3g overview
TRANSCRIPT
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Internal
OWA200001 3G Overview
ISSUE 1.0
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Upon completion of this course, you willbe able to:
Know the development of 3GKnow the feature of each 3G standard
Know the architecture of WCDMA system
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Chapter 1 3G Summary
Chapter 2 3G Standard Contrast
Chapter 3 WCDMA System Architecture
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Different Service, Different Technology
AMPS
TACS
NMT
Others
1G 1980sAnalog
GSM
CDMA
IS-95
TDMAIS-136
PDC
2G 1990sDigital
Demandsdrive
3GIMT-2000
UMTS
WCDMA
CDMA
2000
Demandsdrive
TD-
SCDMA
3G provides compositive services for both operators and subscribers
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3G Evolution
Proposal of 3G
IMT-2000: the general name of third generation mobile
communication system
The third generation mobile communication was first proposed in1985and was renamed as IMT-2000 in the year of 1996
Commercialization: around the year of 2000
Work band : around 2000MHz
The highest service rate :up to 2000Kbps
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3G Objectives
3G is developed to achieve:
Universal frequency band for standard and seamless global
coverage
High spectral efficiency
High quality of service with complete security and reliability
Easy and smoothly transition from 2G to 3G, compatible with 2G
Provide multimedia services, with the rates:
Vehicle environment: 144kbps
Walking environment: 384kbps
Indoor environment: 2Mbps
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1850 1900 1950 2000 2050 2100 2150 2200 2250
ITU
Europe
USA MSSPCS
A D B BC D CE F A FE MSSReserveBroadcast auxiliary
2165 MHz1990 MHz
1850 1900 1950 2000 2050 2100 2150 2200 2250
1880 MHz 1980 MHz
UMTSGSM 1800 DECT MSS
1885 MHz 2025 MHz
2010 MHz
IMT 2000
MSSUMTS
Japan MSSIMT 2000MSSIMT 2000PHS
1895
1918
BC
1885
A A
2170 MHz
IMT 20002110 MHz 2170 MHz
MSS MSS
CDMATDDWLL
FDDWLL
1980
2025MHz
GSM1800
CDMAFDDWLL
1960
1920
1945
China
cellular(1) cellular(2) cellular(2)
1805 MHz
1865
1865
1870
1885
1890
1895
1910
1930
1945
1965
1970
1975
3G Spectrum Allocation
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Bands WCDMA used
Main bands
1920 ~ 1980MHz / 2110 ~ 2170MHz
Supplementary bands: different country maybe different1850 ~ 1910 MHz / 1930 MHz ~ 1990 MHz (USA)
1710 ~ 1785MHz / 1805 ~ 1880MHz (Japan)
890 ~ 915MHz / 935 ~ 960MHz (Australia)
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3G Application Service
Time Delay
BER
background
conversational
streaming
interactive
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Chapter 1 3G Summary
Chapter 2 3G standard contrast
Chapter 3 WCDMA System Architecture
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The Core technology of 3G: CDMA
CDMA
WCDMA
CN: based on MAP and GPRS
RTT: WCDMA - FDD/TDD
TD-SCDMACN: based on MAP
RTT: TD-SCDMA
cdma2000CN: based on ANSI 41 and MIP
RTT: cdma2000
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What is CDMA?
power
FDMA
power
TDMA
power
CDMA
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Features of CDMA
High spectrum efficiency
Security
spreaded signal is close to noise
with ability of anti-interference
Soft capacity
More band occupancy
Self-interference system
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WCDMA Protocol Version Evolution
3GPP Rel99
3GPP Rel4
3GPP Rel5
2000/03 2001/03 2002/03
GSM/GPRS Core Network
WCDMA RTT
CS domain change to NGN
WCDMA RTT
IMS
HSDPA3GPP Rel6
MBMS
HSUPA
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cdma2000 Protocol Version Evolution
IS-95A
1995 1998 2000
Voice: QCELPData rate: 9.6kbps
Voice: same as 95AData rate: 115.2kbps
Voice: double capacity
Data rate: 307.2kbpscdma2000
1xEV-DO/DV
2002
DO: Data Only, 3Mbps
DV: Data and Voice
IS-95B
cdma20001x
cdma2000-3x
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The development of TD-SCDMA
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Comparison between Three 3G Technologies
WCDMA cdma2000 TD-SCDMA
Multiple Access
methodFDMACDMA FDMACDMA FDMATDMACDMA
Duplex method FDD FDD TDD
Carrier band 5MHz 1.25MHz 1.6MHz
Chip rate 3.84Mcps 1.2288Mcps 1.28Mcps
Synchronization Asynchronous Synchronous Synchronous
Transmission
Diversity
STTDTSTD
FBTDOTDSTS None
Receiver RAKE RAKE RAKE
Power control 1500Hz 800Hz 200Hz
HandoverSoft handover and
hard handover
Soft handover and
hard handoverBaton handover
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Chapter 1 3G Summary
Chapter 2 3G standard contrast
Chapter 3 WCDMA System Architecture
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WCDMA System Architecture
RNS
RNC
RNS
RNC
Core Network
Node B Node B Node B Node B
Iu-CS Iu-PS
Iur
Iub IubIub Iub
CN
UTRAN
UEUu
CS PS
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WCDMA R99 Network Architecture
GSM /GPRS BSS
BTS
BSC
NodeB
RNC
PCU
UTRAN
SCP
SMS
SCE
MSC/VLRGMSC
HLR/AUC
SGSN
CGBG
GGSN
GPRS backbone/
Other PLMN
SS7
Internet,Intranet
PSTNISDN
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WCDMA R4 Network Architecture
GSM /GPRS BSS
BTS
BSC
NodeB
RNC
PCU
UTRAN
SCP
SMS
SCE
HLR/AUC
SGSN
CG BG
GGSN
GPRS backbone
SS7
MGW MGW
IP/ATM Backbone
VMSC Server GMSC Server
PSTNISDN
Other PLMN
Internet,Intranet
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WCDMA R5 Network Architecture
GSM /GPRS BSS
BTS
BSC
NodeB
RNC
PCU
UTRAN
SCPSMS
SCE
HLR/AUC/HSS
SGSN
CG
BG
GGSN
GPRSbackbone
MGW MGW
VMSC ServerGMSC Server
IP/ATM BackboneCS domain
PS
domain
Iu-CS
Iu-PS
IP backbone
MRFP
IMS domain
MGW
P-CSCFS-CSCF
MGCF
MRFC
SS7
PSTN/PLMN
Internet,Intranet
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