GSM BTS312 Hardware Structure potx

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Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
GSM BTS312
Ha rdwa re Structure
Page2
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Objective s
Upon completion of this course, you will be able to:

Know the functions and features of BTS

Master the BTS hardware structure

Master the signal processing of BTS
Page3
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Re fe re nces

BTS312 User Manual

BTS3.0 User Manual
Page4
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents

Overvie w

System Components

Signal Processing


Antenna and Feeder System
Page5
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Location
MS: Mobile Station
BTS: Base Transceiver Station
OMC: Operation and Maintenance Center
HLR: Home Location Register
EIR: Equipment Identity Register
MSC: Mobile Switching Center
VLR: Visitor Location Register SMC: Short Message Center
VM: Voice Mailbox
BSC: Base Station Controller
AUC: Authentication Center

PSTN
ISDN
PSPDN
Um Interface
BTS
BTS
BTS
BTS
OMC
HLR/AUC/EIR
BSC
MSC/VLR
SMC/VM
A Interface
MAP

M
A
P
TUP,ISUP
MS
MS
MS
Page6
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Fea tures a nd Functions

High integration and low power consumption

15 radio carriers at the Abis sharing an E1 for transmission
(15:1)

Support various transmission modes and complex
topologies,

e.g. SDH, E1, microwave, satellite etc.

1-minute fast startup
Page7
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Fea tures a nd Functions

Support GSM900,DCS1800,EGSM and RGSM

Support GSM PHASE 1 、 PHASE 2 and PHASE 2+


Support GPRS and EDGE

Support baseband hopping and RF hopping

Support FR, HR, EFR and AMR

Support A5/1 and A5/2 encryption/decryption
Page8
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Hardwa re Structure
DATA_BUS/CONTROL_BUS/TIMING_BUS
External
control
External
alarm
E1
TMU
Opt. fiber
xDSL
TEU
PMU
FH_BUS
CDU
PSU
TRX
TRX
TRX
Signal Processing Unit
Common Unit
CDU

CDU
antenna
antenna
antenna
Antenna Feeder Unit
TES
Page9
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Ca binet and Boards
CDU: Combiner & Divider Unit
TRX: Transceiver
PMU: Power Monitoring Unit
TMU: Timing/Transmission &
Management Unit
PSU: Power Supply Unit
TDU: Time Distribution Unit
TES: Transmission Extension Power
Supply Unit
TEU: Transmission Extension Unit
FAN BOX
SWITCH BOX
FAN BOX
AIR BOX
AIR BOX
P
S
U
P
S
U

P
S
U
P
S
U
P
S
U
P
S
U
P
M
U
T
M
U
T
E
S
T
E
U
T
M
U
T
E
U

T
R
X
T
R
X
T
R
X
T
R
X
C
D
U
C
D
U
T
R
X
T
R
X
T
R
X
T
R
X

C
D
U
C
D
U
T
R
X
T
R
X
T
R
X
T
R
X
C
D
U
C
D
U
TDU
Page10
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents

Overview


Sys tem Components

Signal Processing

Antenna and Feeder System
Page11
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents
2 System Componnents
2.1 Co mmo n Unit
2.2 Signal Processing Unit
Page12
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
TMU

Functions of TMU

Provide E1 connection interface

Provide channel multiplexing and flexible networking modes

Provide Man-machine interface (MMI) and operation &
maintenance link

Provide centralized BTS clock

Provide alarm signal input ports
Page13
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Structure of TMU
BSC
External synchronous clock
MMI (man-
machine
Interface)
Environment
monitors
BIU
OMU
MCK
Standby MCK
Extended BIU
DBUS
CBUS
TDU
TBUS
Standby
TMU
EAC
Page14
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Indictors on TMU
Indic ato r
Name
Co lo r Meaning Explanation No rmal S tate
PWR Green Power
On: Normal
Off: Abnormal
On

RUN Green Running State
Flash(0.5Hz): Normal
On or Off: Abnormal
Flash
LI1,2,3,4 Green
E1
Transmission
On: Local Alarm
Flash: Remote Alarm
Off: Normal
Off
M/S Green
Master/Slave
indication
Slow flash(1HZ): Master
Quick flash(2Hz): Slave
Master Board:
Slow flash
Slave Board:
Quick flash
PLL Green
Phase
identification
indicator
On: Free oscillation
Quick flash(4Hz):
Catching
Slow flash(1Hz): Locked
Off: Abnormal
Slow flash

TMU
MMI
T13M
FCK
T2M
DBG
RST
PWR
M/S
RUN
LI1
LI2
LI3
LI4
PLL
Page15
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TDU

Functions of TDU

Provide clock channels in one synchronous cell

Provide alarming channels

Provide bus-control interfaces
Page16
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Position of TDU
Page17

Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Ca binet-top Connectors
(1) Data bus
interfac e (DCF1)
(2) Exte rnal alarm
interfac e (EAC1 and EAC2)
(3) 120Ω E1
interfac e (TME1)
(4) Built-in o ptic al
trans mis s io n E1 interface
(TRA1, TRA2, TRB1, and
TRB2)
(5) Storag e battery
manag eme nt s ig nal
cable interfac e
(PWRC)
(6) Clock interfac e (CKB1
and CKB2)
(7) Data bus inte rfac e
(DCF2)
(8) 75Ω E1 inte rfac e (TX and
RX)
(9) Exte rnal
s ync hronous clo c k
interfac e (SYNC)
(10) Grounding c able
interface fo r c ombined cabinet
(S HELLGND)
(11) External powe r
cable interfac e

(12) Fe e der input interface
(ANT)
(13) Cas c ading inte rfac e o f CDU combined c abinet
(CDU)
Page18
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
When the supply input is 220VAC,the AC/DC

module is used.

When the supply input is +24VDC,neither
DC/DC nor AC/DC module is used.

When the supply input is -48VDC,the DC/DC
module is used.
220VAC
-48VDC
+24VDC
Power Supply
Page19
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Power Supply System
AC/DC
(DC/DC)
module
Monitoring
unit PMU
Anti-lightning
Power

distribution
EMI
filter
DC contacter
Battery group Fuse
220VAC IN
-48VDC IN
+
-
+24VDC IN
+
-
26VDC OUT
Load
…
EMI
filter
AC/DC
(DC/DC)
module
AC/DC
(DC/DC)
module
AC/DC
(DC/DC)
module
EMI
filter
Page20
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PSU Configura tion
mode
Capacity
(TRX)
Boards
(PS U)
Boards
(PMU)
notes
24VDC
1 ~ 12 0 1
-48VDC 1 ~ 3 2 1
One PSU
for backup
4 ~ 6 3 1
7 ~ 9 4 1
10 ~ 12 5 1
220VAC 1 ~ 3 3 1
4 ~ 6 4 1
7 ~ 9 5 1
10 ~ 12 6 1
Page21
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PMU s tructure
PMU s tructure
PMU
AC/DC AC/DC AC/DC
AC power supply
Power monitoring
unit PMU

Fan
Fuse
Battery
Load
AC/DC
Page22
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FMU

Functions of FMU

Fan feeding

Fan revolution speed control

Alarm detection

+24V power supply input interface
Page23
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Contents
2 System Componnents
2.1 Common Unit
2.2 Sig nal Pro ce s s ing Unit
Page24
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TRX

Functions of TRX


Baseband speech processing

Um and Abis interface signaling processing

Modulation and demodulation

RF signal amplification
Page25
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PAU
TRX Module Structure
Transmitter
DBUS
TBUS
SCP
CUI
Clo ck proce s s ing part
TBPU
DSP
FH_BUS
TDP
RCU
RPU
Receiver
Diversity
receiver
CBUS
TBPU:TRX Baseband signal Processing Unit
RPU:RF signal Processing Unit
SCP: Signaling Processing Unit DSP: Digital Signal Processing

Unit
CUI: Carrier Unit Interface
TDP: Transmitter Driver and PLL Unit PAU: Power Amplifier Unit RCU: Receiving Unit
DBUS: Data Bus CBUS: Control Bus TBUS: Timing
Bus
FH_BUS: Frequency Hopping Bus