3g system wall chart
TRANSCRIPT
8/4/2019 3g System Wall Chart
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PulseShapingFilter
RFOut
DataChannel
1
DataChannel
N
Linear
Summation
Spread Spectrum Code(PN Code or Gold Code)
FECCoding
OrthogonalCode 1
OrthogonalCode N
1:2Demux
PulseShaping
Filter
I/QModulator
CRCCoding
Inter-leaving
CRCCoding
ComplexMultiplier
(I + jQ)
FECCoding
Inter-leaving
D/A
D/A
SSC_Q SSC_I
I
Q
I
Q
I
Q
Allows for
error detectionin the receiver
Allows for
errorcorrection
in the
receiver
Improves
errorcorrection
in the
receiver
Gives a unique
identity toeach data
stream
Maps
digital bitsto analog
signals
0 +1
1 -1
Provides 2x
higher datarate
(WCDMA,cdma2000
downlink)
Gives a unique
identity to thistransmitter
Contains
transmittedfrequencyspectrum
Allows both signals
from 1:2 Demux toshare the same RF
bandwidth
Pre-coded data (bits) Symbols Chips
Cellular CDMA Transmitter
+
+
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CDMA RAKE Receiver Architecture
BPF LPF
“I” PN
Code(+1/-1)
“Q” PN Code
(+1/-1)
Orthogonal
Code(+1/-1)
Integrateover
„SF‟ chips
De-Interleave
Data
Viterbi/Turbo
Decoder
CRCVerification
DecodedOutputBits
ErrorIndication
cos(2f RFt)
PilotOrthogonal
Code(all zeros)
TimingAdj.
bit rate = chip rate / SF
cos(2f IFt)
Carrier Frequency Tracking Loop
Other Rake Receiver Finger
Rake Receiver “Finger”
D
D
I/Q
Demod
Correlator
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MobileSwitching
Center(MSC)
BaseStation
Controller(BSC)
Base
Transceiver
Station
(BTS)
To other
BTS’s
Toother
BSC’s
To otherBTS’s
Um
Um
Um
Abis
Abis
Abis
A
A
E
VLR HLR
EIR
Gateway
MSC
AC
H F
CB
Toother
MSC’s
E
F
C
VLR
B
D
G
GPRS Network Components
D
GSM/GPRS Network Architecture
Packet
ControlUnit
(PCU)
Serving GPRSSupport Node
(SGSN)
Gateway GPRSSupport Node
(GGSN)
External Networks
PSTN
ISDN
Internet
...
External Data
Network
IP / X.25
To
other
BSC’s
A
Base Station
Subsystem
(BSS)
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MobileSwitching
Center(MSC)
RNCNode B
(BTS)
To other
RNC’s
To other
RNC’s
Uu
Uu
Uu
IuE
VLR HLR
EIR
Gateway
MSC
AC
H F
CB
To
otherMSC’s
E
F
C
VLR
B
D
G
GPRS Network Components
D
WCDMA/UMTS Network Architecture
Serving GPRS
Support Node(SGSN)
Gateway GPRS
Support Node(GGSN)
External Networks
PSTN
ISDN
Internet
...
External Data
Network
IP / X.25
Radio Network Subsystem
(RNS)
Iub
RNCNode B
(BTS)
Uu
Uu
IuIub
Iu
Iu
Iu
UMTS
Terrestrial Radio Access Network
(UTRAN) Core Network
(CN)
Iu
Iur
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Logical Channels(Layers 3+)
Transport Channels(Layer 2)
Physical Channels(Layer 1)
UplinkRF Out
WCDMA Uplink (FDD)
UE
Scrambling
Code
I+jQ I/QMod.
Q
I
Chc
I
Filter
Filter
CCCHCommon Control Ch.
DTCH (packet mode) Dedicated Traffic Ch.
RACHRandom Access Ch.
PRACHPhysical Random Access Ch.
DPDCH #1Dedicated Physical Data Ch.
CPCHCommon Packet Ch.
PCPCHPhysical Common Packet Ch.
Data
Coding
DataCoding
DPDCH #3 (optional)Dedicated Physical Data Ch.
DPDCH #5 (optional)Dedicated Physical Data Ch.
DPDCH #2 (optional)Dedicated Physical Data Ch.
DPDCH #4 (optional)Dedicated Physical Data Ch.
DPDCH #6 (optional)Dedicated Physical Data Ch.
Q
DPCCHDedicated Physical Control Ch.
Pilot, TPC, TFCI bits
Chd
Gc
Gd
j
Chd,1 Gd
Chd,3 Gd
Chd,5 Gd
Chd,2 Gd
Chd,4 Gd
Chd,6 Gd
Chc Gd
Chc
Chd
Gc
Gd
j
RACH Control Part
PCPCH Control Part
j
DCCHDedicated Control Ch.
DTCHDedicated Traffic Ch. N
DCHDedicated Ch.
DataEncoding
DTCHDedicated Traffic Ch. 1
DCHDedicated Ch.
Data
Encoding M
U X
CCTrCH
DCHDedicated Ch.
Data
Encoding
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BCCHBroadcast Control Ch.
PCCHPaging Control Ch.
CCCHCommon Control Ch.
DCCHDedicated Control Ch.
DTCHDedicated Traffic Ch. N
BCHBroadcast Ch.
PCHPaging Ch.
FACHForward Access Ch.
DCHDedicated Ch.
P-CCPCH(*)Primary Common Control Physical Ch.
S-CCPCHSecondary Common Control Physical Ch.
DPDCH (up to 14 per carrier)Dedicated Physical Data Ch.
TFCI bits
SSCi
Logical Channels
(Layers 3+)
Transport Channels
(Layer 2)
Physical Channels
(Layer 1)
DownlinkRF Out
DSCHDownlink Shared Ch.
SHCCHDSCH Control Ch.
CTCHCommon Traffic Ch.
DataEncoding
DataEncoding
Data
Encoding
Data
Encoding
Data
Encoding
PDSCHPhysical Downlink Shared Channel
PICH(Paging Indication Channel )
Paging Indication bits
WCDMA Downlink (TDD)
S/P
S/P
S/P
S/P
S/P
Cell-specific
ScramblingCode
I+jQI/Q
Modulator
Q
I
Cch
Cch
Cch
Cch
Cch 256,1
GS
PSC
GP
Sync Codes(*)
* Note regarding P-CCPCH and SCH
Sync Codes are transmitted only in bits 0-255 of each timeP-CCPCH transmits only during the remaining bits of each
Filter
Filter
Gain
Gain
Gain
Gain
SCH (Sync Channel)
DTCH
Dedicated Traffic Ch. 1
DCH
Dedicated Ch.
Data
Encoding
MU
X
CCTrCH
DCHDedicated Ch.
Data
Encoding
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Logical Channels(Layers 3+)
Transport Channels(Layer 2)
UplinkRF Out
WCDMA Uplink (TDD)
UE
Scrambling
Code
I+jQ I/QMod.
Q
IFilter
Filter
CCCHCommon Control Ch.
RACHRandom Access Ch.
PRACHPhysical Random Access Ch.
DPDCH #1Dedicated Physical Data Ch.
Data
Coding
DPDCH #2 (optional)Dedicated Physical Data Ch.
DPDCH #3 (optional)Dedicated Physical Data Ch.
DPDCH #16 (optional)Dedicated Physical Data Ch.
TPC, TFCI bits
RACH Control Part
DCCHDedicated Control Ch.
DTCHDedicated Traffic Ch. N
DCHDedicated Ch.
Data
Encoding
DTCHDedicated Traffic Ch. 1
DCHDedicated Ch.
Data
Encoding
M
U X
CCTrCH
DCHDedicated Ch.
Data
Encoding
USCHDownlink Shared Ch.
SHCCHUSCH Control Ch.
Data
Encoding PUSCHPhysical Uplink Shared Channel
S/P
Cch Gain
S/P
Cch Gain
S/P
Cch Gain
S/P
Cch Gain
S/P
Cch Gain
S/P
Cch Gain