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| Document ID | 71439 |
| Application ID | 9XJDNPXrBNGihysjownaSQ== |
| Document Description | Resubmitted Users Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 110.63kB (1382843 bits) |
| Date Submitted | 1999-11-22 00:00:00 |
| Date Available | 2000-02-10 00:00:00 |
| Creation Date | 1999-11-10 16:14:26 |
| Producing Software | Acrobat 3.0 Scan Plug-in |
| Document Lastmod | 1999-11-10 16:14:40 |
| Document Title | Resubmitted Users Manual |
| Document Creator | Acrobat 3.0 Scan Plug-in |
MICRO-B BTS
System Description
@ SMDOOs-SYAZIO
Ol(01)/991006/1.0
Copyright © 1999 LGIC
All Rights Reserved
Printed in Korea
Notice
No part of this document may be reproduced or distributed in any means, without the express
prior written permission of LG Information & Communications, Ltd.
LG information & Communications, Ltd. Makes no representations or warranties, express or
implied, with respect to the contents hereof, The information in this document may be
changed at any time without notice
LGIC is a trademark of LG Information & Communications, Ltd. All other trademarks
mentioned herein are the property of their respective owners.
System Description Cements
Contents
1. General
1.1 Overview ......
General Specificauo
Soflware Configuration
3. Functions
3.1 Main Functions ofBTS
3.2 Hardware Configuration and Functio
3.3 Sofiware Configuration Diagram
4. Abbreviation............i.........................
MD 00 YA 210 Page: 1
@ S 8—6” Issue: 1.0
System Description Micro-B B TS
1. General
1.1 Overview
Micro-B BTS (hereinafier called M-BTS), located between MS and BSC, a private
communication system using CDMA digital mobile communication technology, controls calls
and performs the maintenance function for MS.
That is, it leads MS to initially recognize BTS, downloads necessary data, assigns trafiic
channel as to call request, and opens call Path.
M-BTS is divided largely into MBMR and MBRR and accommodates all the functions below.
0 Call control and call resources management
0 Loading function
Configuration and operational information processing function
Fault handling function
Statistics, overload measurement and control function
Radio signal processing, radio link test and TPTL
Packet routing and transmission
Inventory function
Remote Control function
. MBMR environment, power monitoring function
- Automatic temperature control device, humidity sensor and humidity adjustment device
- Using a suitable device to ensure dehumidification
— Sensing and reporting whether air conditioner/heater, rectifier, and battery are abnormal
e MBRR additional function
- Door Open function
- Volt pressure function
Page: 2
©SMD—008—SYA210 bsue: 1.0
System Description Micro-B BIS
1.2 General Specification
I. U to 2FA/3 Secto Extended
w 13K lCELP Vocoder
Trafiic Handling Capacity per Sector More than 9.0 Erlang/Sector/FA
D BP=2%
No. of Channel Elements - r Board 20 Channel Elements
Environmental Requirements
0 Operating Temperature Limits
MBMR -30 ~ 46°C
MBRR -30 ~ 46°C
0 Relative Humidity Limits
M'BMR 5 ~ 90%
MBRR 5 ~ 90%
Rack Size
MBMR 750Wx700Dx846H(mm)
297Wx 132Dx510H mm
No. of Receiver Antenna ZEA/Sector
Frequency Band Downlink (MS —> BTS) :
1 ,850~1 ,91 OMHZ
Uplink (BTS —> MS)
1,9304 ,990MHZ
@SMD-008-SYAZIO [$21.3
System Description Micro-B BTS
2. Architecture
2.1 Hardware Configuration
2.1.1 MBMR (Micro-B BTS Main Rack)
MBMR consists of MCC-C, MGPS, Nut/II, rectifier, environment sensor, battery.
< MBMR Configuration and Insertion Diagram >
2.1.1.1 MCC-B (Micro-B BTS Control & Channel Bank Block — B)
MCC-B block performs Downloading, call control, and maintenance functions of BTS. It also
performs Modem function and Channel distribution functions of CDMA Channel and
tip/down convening function of RF signal.
(1) ECPAAM : Master Processor function of BTS
(2) BAMA : Alarm gathering and maintenance in BTS
(3) RCPA : RF device control function, Base-band Digital Combining function of the forward
link
(4) MCPA20 : Overhead channel function, digital signal processing as to CDMA channel
(5) BUDA : Frequency conversion function of Tx/Rx signal, A/D Conversion function
(6) LICD : Function which interfaces BSC with Trunk
(7) MCCB-B : Back Board ofMCC-B block
(8) PSU/L : DC [DC Converter Module
©SMD—008—SYA210 13153;
Syflem Description Micro-B BTS
2.1.1.2 MGPS (Micro-B BTS’s Global Positioning System)
MGPS block is composed of BTMA which provides synchronization with BTS system and
CLOCK, using TOD and synchronous signal provided from GPS receiver and MGPS
composed ofGPS engine, Power supply, OCXO‘ and Controller.
BTMA receives 10MHZJ(sine wave)‘ 1PPS('1'1'L) and TOD(Tune of Day) fi'om MGPS, and
TOD uses IPC link in BTS to perform Broadcasting. Signals between MGPS and BTMA
are all connected through Backplane, and BTMA and MGPS use their own On-board power
supply.
(1) BTMA : Provides synchronization with BTS system and Clock.
(2) MGPS : Provides IOMHZ, IPPS, and TOD and controls two GPS modules
2.1.1.3 MMIU (Micro Master interface Unit)
M M M
M M M
I I I
U U U
a B 7
< WIU Insertion Diagram >
2.1.1.4 Rectifier
PSOM is an Unit developed for a stable power supply to M-BTS, and its basic functions
include System DC power supply fimction and environment control function.
2.1.1.5 ACU-M (Access Control Unit - M)
ACU-M is an Unit inserted to sense and control environment Alarm of M—BTS, and it senses
BTS status through the sensor loaded, and transmits sense data and environment Alarm to
BAMA. In addition, it operates Heat exchanger to control the environment in the housing.
Page: 5
®SMD~008—SYA210 lssue: 1.0
System Description Micro-B BTS
2.1.1.6 Battery
Upon a commercial power failure it supplies power to the system, and 30 minute system Back
up is enabled.
2.1.2 MBRR (Micro-B BTS Remote Rack)
MBRR is comprised of MRCA, MFEU-B, PACA-EB, Bias Tee, DC/DC Booster, DC/DC
Converter; and HPAU-NT.
MBRR Insertion Diagram
MBRR is operated with DC power from MBMR, and it amplifies, oombines and separates
Tx/Rx signal, and performs RP output control function at MBMR through the sense and
report of Tx signal level. In preparation for power emergency it receives Battery power
from MBMR for operation.
For the diversity of Rx signal it uses two antennas, and Tx/Rx Duplexing function. It also has
an extra control line and the Control function for Control and status management with Master
side.
Page: 6
©sm>4msmzm Issue: 1.0
System Description Micro-B BIS
(l) MRCA : Controls a device in MBRR.
(2) Bias Tee: Combines and separates power and RF Tx/Rx signal.
(3) Duplexer: Combines and separates Tx/Rx signal.
(4) HPAU-NT: Performs the amplification function necessary for the output of Nominal RF
Power ofo signal.
(5) WEU-B: Amplifies lFA BPF and two Rx path signal, and detects and separates Tx signal.
(6) PACA-EB : Detects and reports Tx signal.
(8) PSUR-BB: Boosts the voltage of DC power.
(9) PSUR-B: Converts DC/DC and mpplies power to each Device.
2.2 Software Configuration
S/W ofBTS is composed of 2 Subsystems, i.e., ECMS, RCCS.
2.2.1 ECMS (Enhanced BTS Call Control & Management) Subsystem
-ECMS Subsystem performs the function that sets up and releases mobile calls and manages
resources related to calls.
In addition, for operation and maintenance, it performs downloading function, status
management function, configuration and operational information change function, fault
handling function, Remote Control function, Inventory function, test function using BADA,
overload control and statistics function, etc.
2.2.2 RCCS (RF & Channel Control) Subsystem
RCCS Subsystem controls MCPA, BUDA, etc. and performs digital signal processing and call
processing as to J-STD-Oos CDMA channel.
In addition, it performs operation and maintenance related functions such as channel element
downloading function, device status management function, statistics function, etc.
It performs the function that controls and manages all RF devices such as BUDA Frequency
Synthesizer Control, HPAU Enable/Disable, etc. and controls RF power such as AGC/RSSI
Level measurement and TX Gain Control of the entire sector, etc.
———__—————-_pag¢;_7
©SMD-008—SYA210 km. 1.0
a ‘ ———-——~-~
System Description Micro-B BTS
3. Functions
3.1 Main functions ofBTS
The main functions of BTS subsystem are as follows:
1) Call control function
It interworks with MS and BSC to perform the function that sets up and releases Mobile-to
Land, Land-to-Mobile, and Mobile-to-Mobile calls entered into BTS, and supports Sofler,
Sofi, Hard handoff functions. In addition, it performs Markov call processing function for
setting up of test calls.
2) Call resources management function
It performs the function that selects Channel Element resources by distributing loads, and
collects them upon call release. In addition, according to handoff occurrence frequency of
each BTS, it reserves handofl' only resources and supports a safe handoff.
' 3) Downloading function
BTS downloads OS and Application Code it needs by processor from the higher processor.
Upon downloading of OS and Application Code, in case of the same Version it does not
receive loading again, and it rather receives a transfer from Flash Memory, a nonvolatile
memory, for execution.
4) Configuration, status function
For operation and maintenance of BTS, it performs the functions such as processor status
management, device status management, configuration information and operational
information management, etc.
5) Fault, alarm handling function
It handles sofiware faults which do not need any hardware device for hardware fault or
detection such as power fault, processor function fault, cable open fault.
6) Test function
As for Charmel element (especially Traffic Channel), it heightens dependability on resources
by periodically testing available resources On-Line. It judges whether to continuously utilize
it as call resources according to the test result. Test by the request of the operator is also
enabled. CE related test has two types, Le, a function which tests CE’s own HIW and a
function which uses BTS Markov Call.
Page: 8
©s1uo-oax-smm 1m: 1,0
was] i ____,_.,__ ____._.___ m»
swam Description Micro-B BIS
7) Overload control function
It is divided into four grades (Normal, Minor, Major, and Critical) according to the load of the
processor, and it takes necessary measures such as origination barring, tenninafion/origination
barring, etc. according to the corresponding grade
8) Statistics and measurement functions
It performs the collection and report functions as to various statistics (call statistics, Process
statistics, paging statistics, CE (Channel Element) statistics, BTS performance statistics, and
CA] (common Air Interface) statistics, etc.). Statistics are collected every hour basically to
be reported to BSM, and, m occasion demands, can be measured with the input of the time
and period that the operator wants.
9)Remote Control function
lt plays a role of isolating or resetting shelf Power, processor or Dew'ce. When the operator
took an isolation (or Reset) command on BSM, ECP receives it and selects a subject (BAMA
or RCP) which actually performs an isolation, and then transmits a message to the
corresponding isolation (or Reset) subject for its isolation (or Reset)‘
10) Inventory function
It is to manage each board’s history. It manages a history about a specific board and a
specific BTS (CN application, repair history, or comments in particular).
Page: 9
®SMD~008~SYA210 km: 1.0
”raj I , _,
System Description Micro-B 31's
3.2 Hardware Configuration and Function
3.2.1 Hardware Configuration Diagram
Micro-B BTS
3.2.2 Function of Each Hardware Unit
3.2.2.1 MBMR
3.2.2.1.1 MCC-B (BTS Control & Channel Bank Block - B)
(l) ECPA (Enhanced Control Processor cireuit board Assembly)
ECPA is the Master Processor of BTS, and is in charge of the fimction which receives a
download from the higher processor and performs a download to the sub-processor, and call
control of MS, performing status management of BTS,
The function of ECPA is largely divided into two parts, i.e., ECP function consisting of 68030
Local Processor function, Shelf Bus Master fimction, duplexing function, Packet Bus Slave
Page: I 0
©s1uo-00mmm lmu: 1.0
system Description Micro-B BIS
’ Node function, M-Bus interface function, etc. and NMM-P function consisting of Network
Master function, Trunk interface function, Packet Bus Slave Node function, M-Bus interface
function.
The main functions are as follows:
0 ECP function
- MC68030 Core function
- IPC Slave Node function
- Duplexing function
- Shelf Bus Master function
- M—Bus interface function
- vaflvi-P function
- 68360 Core function
- lPC Slave Node function
— M-Bus interface function
- Network Master function
- Trunk interface function
(2) BAMA (BTS Alarm collection & Maintenance hoard Assembly)
It performs Alarm collection and Reporting in BTS, Remote Control, BSM access through
PSTN (Modern), and BTS Maintenance.
The main functions are as follows:
0 l-l/W Alarm Collection and Reporting in BTS
It can accommodate up to 180EA of BTS H/W Alarm (Cable Alarm : 158EA, Alarm in
Shelf : 22EA) including Reserved 16Pin, and collected Alarm is sent to ECPA through
lPC(RS-422/HDLC).
0 Remote Control
It can perform Power Pack On /0ff through BAMA or restart Processors in each Board,
and up to 24EA are enabled.
Electrical standards are TTL, and when High it is in Power Pack 06 or Board Reset status,
when Low it is Power Pack On or Board Run status,
Page: 11
©sm4m-smw 1mm 1.41
system Description Micro-B BTS
o BSM access through User I/F (PSTN) Modem
BSM(Work Station or PC) can access BTS BAMA through PSTN, and BSM can check
the BTS status, perform Remote Control and diagnose the Boards in BTS. Modem’s
Protocol is v.90, and its transmission speed is up to 56Kbps.
- BTS Maintenance( by Maintenance Bus, EDU Communication)
BAMA is Master of the Maintenance Bus, and through this it checks the status of each
board in BTS and manages it. M BUS is in the method of l-DDLC BUS consisting of one
Master and multiple Slaves, and each Slave can escape the collision between the Slaves
through CTS Control. Electrical standards are in the method of RS-485.
(3) RCPA (Radio & Channel Processing board Assembly)
RCPA plays a role of Base-band Digital Combining of the forward link, Parity Check and
generation of the backward link, and distribution of the Timing and basic frequency of the
Digital Shelf, and of RF Device Control.
The main functions are as follows:
0 Core Control Module (CCM)
- Interrupt Control
- DMA Control
- Timer
- Control port
- ESCC
- RS—232 Monitor Interface
0 Memory Controller
- Dram, Cache RAM, Tag RAM Control
- Cache Mode Control between Cache RAM and DRAM
- Flash Memory Control
0 HDLC
- NIM2- Board Duplex
0 Peripheral Controller
4 CSM(Cell Site Modem) ASIC or ECM ASIC — Modem Chip
- CDM - CDMA Date interface Control
©sMD—008—SYAZIO £55115
System Description Micro-B BIS
- SDM — Self states Detecting Module (Open/Fail)
- PIM - Packet lnterface with MCPA
- STM — System Timing
- HPA — SIO HPA Interface
- SIM — BUDA, PACA Interface
(4) MCPA20 (Multi-Channel Processing board Assembly 20)
MCPA20 is a Board in charge of up to 20 Traffic Channels with Overhead channel (Pilot,
Sync, Paging, Access channel) of CDMA code channels, and MCPA20 has Core Control
Module (CCM) interfacing with CPU(i960), and is composed of ESCC in charge of Monitor
Interface through RS-232, Memory Controller in control of Memory, and Peripheral
Controller in charge of the Interface of the Peripheral Dew'ce in the Board 20EA of
CSM(Cell Site Modem) ASIC or ECM ASIC Control corresponding to each CDMA Code
Channel correspond to it.
The main functions are as follows:
0 Core Control Module (CCM)
- Interrupt Control
- DMA Control
- Timer
- Control port
0 ESCC
- RS-232 Monitor Interface
- Memory Controller
- Dram , Cache RAM, Tag RAM Control
- Cache Mode Control between Cache RAM and DRAM
- Flash Memory Control
0 Peripheral Controller
- CSM(Cell Site Modem) ASIC or ECM ASlC
- DTM - Timing & CDMA Date interface Control
- PIM
- Packet Interface with RCPA
Page: 13
©SMD—008JYA2M Issue:1,0
System Description Merv-B BTS
(5) BUDA (Base station sector conversion & Up/Down converter Assembly)
BUDA is largely divided into the common part, Tx Path, and Rx Path. BUDA’s Block
Diagram and the major functions are as follows:
a Major functions in Tx/Rx
- Frequency UP Conversion function which changes Baseband signal into IF/ RF signal
- RF signal output adiushnent function by Gain Control.
- Tx AGC (Automatic Gain Control) function: A function which regularly maintains the
gaining of sending-end so that the output of sending—end may be regular
- Rx AGC (Automatic Gain Control) function
- RSSI (Received Signal Strength Indication) Monitor function
- IQ Demodulator function
(6) LlCD (Line Interface Control Daughter board)
LICD is a trunk interface Daughter board inserted into BSBB and BCCB Back Plane in BTS.
LICD has 4 Tl/El trunk link circuits for T1/El packet Tx/Rx between ECPA of BTS and
ClTA of BSC or ENIA of BTS and ClTA of BSC, and the selection of T1 and E1 is
determined by LlCD built-in Framer. And, 4 Links should all be used for T1 or El.
(7) MCCB-B (Micro-B BTS Control & Channel Bank Backboard — B)
MCCB-B is a Backboard of BCC Block accommodated in M-BTS Outdoor BTS.
It was designed to be only used for [PA 3Sector.
MCCB-B was designed to insert 2EA of Power Pack(PSU—H), 2EA of ECPA, 1EA of BADA,
lEA of BAMA, SEA of MCPAZO, 213A of RCPA, 3EA of BUDA, and [EA of PACA. In
addition, on the back of BCCB is lEA of LlCD inserted.
MCCB-B is a PBA of a multiple board made of 14 layers having an external size which can
be insened into the standard Outdoor Shelf. It was designed to accommodate the boards
inside the BCC Block of Outdoor type M-BTS.
Page: 14
©smwawmzw km. 1.0
System Description Micro-B BTS
3.2.2.1.2 MGPS
1) BTMA (BTS Timing Management circuit board assembly)
BTMA receives lOMHZ(T1'L), 1PPS('I'1'L) and TOD (Time of Day) from MGPS, and TOD
uses IPC link in BTS for Broadcasting. BTMA is operated duplex, and the signals between
MGPS and BTMA are all connected through Backplane, and BTMA uses On-boatd power
supply.
The main functions are as follows:
O Clock Generation function
- SYS_CLOCK/EVEN_SEC
- p-ECL Interface
- GPS interface function
- TOD / Control /Alarm/ lPPS/ IOMHZ
- TTL Interface
o MBUS interface function
- Power On/Off
- RS485 Interface
0 IPC function
- Interface using NIM2 ASIC
- RS422 Serial Interface
Interaction
Interface between BTMA and MGPS is as follows:
Clock Interface : Provides IPPS, 10Mhz (from MGPS)
TOD, Control TTL Interface : Provided to BTMA through Back plane
Alarm Interface : Receives GPS related H/W Alarm (Open / Power fail / Function fail) from
MGPS to provide it to BAMAi
2) MGPS (Micro-B BTS’s Global Positioning System)
MGPS provides 10Mhz(Tl'L), 1PPS(TTL) and TOD (Time of Day - TTL) to BTMAi
All signals between MGPS and BTMA are connected through Backplane, and uses its own
On-board power supply.
©SMD—008-SYAZIO 1135511;
System Description Micro-B BIS
The main functions are as follows:
10Mhz, lPPS, TOD Generation function
Control port, Alarm Interface function
Redundancy Control function
Fault monitoring function
0...
3.2.2.1.3 MMIU (Micro-B Master Interface Unit)
MMIU amplifies Tx output of the BUDA Board by Sector, and it uses manual Attenuator to
adjust the gain of the Tx Path in consideration of path loss to the extent of Remote The
adjusted Tx signal is combined with DC signal at Bias-Tee installed in Rack through the
Duplexer to be extended to the extent of Remote in order to be transferred to the RX path to
the extent of Remote with one Coaxial cable.
- Function of amplifying Tx signal of BUDA by Sector
Duplexer function for sharing of Tx/Rx path
Manual attenuation adjustment function
Gain compensation function according to the distance between Master and Remote
Function of amplification of low noise of Rx signal
Manual attenuation adjustment function for the compensation of the loss of Rx path
Power distribution, Alarm collection, DC/DC conversion function (MMlD: Transmitter
Master Interface Daughter Board)
DC power supply function
Alarm collection Composite function
Function of status indication on the front board (power detection and operational status)
Function of Alarm signal detection and report to RCPA
Signal distribution function as to 2 Rx paths
0 Function of monitoring Tx/Rx signal
3.2.2.1.4 ACU-M (Access Control Unit —M)
ACU is an Unit for the detection and control of the environment alarm of M-BTS, and senses
the status of BTS through the loaded sensor, and performs the function of transmitting the
sense data and environment Alarm to BAMA.
©SMD-008-SYA210 [Page-16
sure. 1.0
System Description Micro-B BTS
ACU consists of three parts as below.
- Sensor part
- Each Sensor is located inside of the housing to sense the environmental status through
the Sensor, and upon a failure‘ it goes off alarms, and transmits the environment alarm to
the higher end (BAMA) at TTL Level.
0 Alarm detection part
- ACU is connected with the external Unit (FAN, RECTlFlER, TCU), and upon a failure
occurrence of the Unit it collects Alarm to transmit it to the higher end.
- Alarm and data transmission part
- Alarm collected through the Alarm detection part and Sensor Alarms are transmitted to
BAMA at TTL Level, and it transmits Rectifier data and Sensor data to BAMA through
HDLC communication.
3.2.2.1.5 Rectifier
PSOM is an Unit developed to supply a stable power to M-BTS, and its basic function is
System DC power supply fimction and environment control function.
Rated input volt and scope : Single-th AC 220V fi0%
Input frequency scope : 47Hz ~ 63Hz
Rated output volt and output current : +27VDC / 120A
EM'I : FCC PART 15 SUBPART J CLASS B
Operational temperature : -30 ~ +60 ' C
Relative humidity : 20% ~ 80%
Storage temperature : -35 ~ +70 ’ C
0 Relative humidity : 5% ~ 95%
0.0.0
3.2.2.1.6 Bias Tee
It is used for the purpose of combining and separating DC power and RF Tx/Rx signal to
reduce the amount of lines, and performs Surge Arrester function.
@SMD—008—SYA210 13511;
System Desalption Micro-B BIS
3.2.2.2 MBRR
(1) MRCA (Micro-B BTS Remote Controller Assembly)
MRCA is a board in charge of Alarm status Report and Module Control of the remote
system, and it uses control signal from RCPA of BTS to control each module, and performs
the function of notifying RCPA of BTS of the state of Alarm and Status.
The main fimctions are as follows:
0 Interrupt Handler
- It receives Interrupt Request from Interrupt Source of 3 - 7 Level and generates
difierently IPLZ" ~ IPLO‘ signals for each Source to determine Interrupt Level, and then
generates Intemrpt Acknowledge signal at A3 - Al signals indicating FC2 - FCO, A19 —
A16 and corresponding Interrupt Level received from CPU to supply it to the
corresponding Source.
0 Module Enable function
— It Enables/Disables the Module in MBRC.
- DCAl Module Enable/Disable
- DCA2 Module Enable/Disable
o Debugger
- It uses SCC3 of MC68360 to make possible the communication with the Terminal or
Host Computer with R8232C Port. Through this, using the commands in the Monitor
Program, it uses it for Debugging, or upon Test Program execution it can check the
operation or result.
0 Mobile Station Interface function
- It performs Serial Communication with MS with SERIAL DATA Async(38.4kbps).
Through this, it checks up the normal status and call status of BTS.
o MBRC temperature feature sense function
- It reads the value of the Thermal sensor located in MBRC through A/D Convener,
and transfers the temperature status of MBRC to RCPA.
Page: 18
Issue: 1.0
@ sup-msmw
System Description Micro-B BIS
0 Module EXIST signal generation function
- To notify MRCA of whether there exists each module in MBRC, Exist Signal
is connected between MRCA and each module, and this signal is connected to
the Ground in each module, and in MRCA it is connected with the pull-up resistance
MRCA hereby judges whether there exist alarms of each module.
0 Analog to Digital (A/D) converter
- It receives the power transmitted from HPA with Rx rate of 0 ~ SV, and measures TX
power to report it to RCPA.
(2) Bias Tee
It combines and separates the power and RF Tx/Rx signal, and performs the Surge Arrester
function
(3)Duplexer
It performs the combination and separation function of Tx/Rx signal.
(4) EPA (High Power Amplifier)
It performs the function that amplifies BTS Tx signal separated through the Duplexer and
transmits it to the Front End Filter. I-H’A is a Power Amplifier for Single Carrier whose
maximum output is l8W(42.55dBm).
The main standards are as in the below table.
Frequency Range 1 930011210 1.99OGHz
RF Ou -ut Power 18W 42.55 dBm
Gain variation over 30 ~ 42.5dBm 45dB i 1 MB
In-ut/Ou ut VSWR 1.5:1 maximum 50 ohm reference
DC Power 27V, 6A max at an condition
(5) MFEU-B
It performs Tx signal filtering of one path, amplification of two Rx path signal, and
detection of Tx Power.
Page: I 9
@SMD-m-smlo lrsue: 1.0
System Description Micro-B BIS
(6) PACA-EBa’ower Adjust & Control Assembly)
PACA-EB PBA receives an input of signals given Tx output COUPLING from TRIU and
converts its frequency to acquire IF signal, and then separates measurement target FA
signal only through the SAW FILTER to convert it into DC volt in proportion to Tx
output, and finally supplies it to MRCA, a PROCESSOR BOARD. Its path has only one
RF PATH, and it can tune 7 FAs by the frequency signal controlled by MRCA.
Reference Clock is supplied by the Oscillator inserted into the board.
BTS Tx output MONITORING(by FA)
MULTI FA TUNING(1~7FA)
SITE CALIBRATION
BTS operation property calibration according to temperature change
Power control by BTS FA
0000.
(7) PSUR-BB(Power Supply Unit for Remote)
It plays a role of receiving the power supplied from the rectifier and Battery of MBMR and
heightens the volt in consideration of volt drop on the Coaxial path, and especially upon
power supply by Battery it plays a role of supplying the power which enables MBRR-B to
be safely operated.
(s) PSUR-B
It performs the function which converts it into the power necessary for the Active Device
of MBRR side to supply the power to each Device.
“m
©SMD-008—SYA210 1m.- 1,0
hm»...m%
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