motorola bts training (1)
TRANSCRIPT
Objectives
State the functional areas of the Horizon II macro cabinet.
• Describe the functions and operation of the Horizon II macro Digital modules.
• Describe the cabinet RF Components.
By the end of this chapter the student will be able to :-
Basic Block Diagram of Cabinet
Three Main Functional areas:
1. Digital Cards
2. Radios (CTU2)
3. RF equipment
RF interface to Antenna( Transmit - Combining and filtering)
(Receive – Amplification and filtering)
CTU2 CTU2 CTU2 CTU2 CTU2 CTU2
E1 Link Digital Cage == Controls the cabinet Alarms Power Supplies
Antenna
• Support of 6x double density CTU2 Single or Double carrier per Radio.
• Horizon II Site Controller (HIISC) – Integrated NIU Integrated FMUX– E1 support Enhanced E1 Redundancy– Increased Capacity/removable flash media– Increased RSL functionality
• Expansion of Horizon II macro cabinets to support 24 carriers per BTS site.
Horizon II Expansion Multiplexer (XMUX)Site Input/Output (I/O) Panel
• Interoperability with current M-Cell and HORIZON macro products
The Horizon II macro BTS hardware supports the following functionality:
Site Controller (HIISC)
CTU2Cooling
Fans
Power Supply Units (PSU)
Circuit Breaker
Card (CBC)
Alarm Board
HORIZON II macro Cabinet Front View
Site I/O Panel
Tx Blocks
Link Interface
Board
SURF2
Power Supply
EAS Alarm, PIX 0 & 1
HORIZON II macro Cabinet Top View
Cabinet Power Supply
Maximum 4x PSU per cabinet – One for Redundancy
Depends on the number of Radios fitted.
The Cabinet can support the three types of power supply
• +27V (negative earth)• -48V (positive earth)• Nominal 120/240V AC
Horizon II macro cabinet power supply requirements
Nominal Voltage
Voltage supply range
Current supply maximum
+27 V dc (negative earth)
+19.5 to +30 V dc
204A (at nominal voltage)
-48 v dc
(Positive earth)
-39 to –72 V dc 99A (at nominal voltage)
120/240 V ac
(50 to 60 Hz)
88 to 270 V 45A (at nominal voltage)
-48v Power Supply Units
Power Supply Units
All three unit types support the same PSU Alarms:
• O/P over/under voltage.
• I/P under voltage.
• Over temperature.
• Internal Fan failure.
Circuit Breaker Card (CBC)
6x CCB for CTU2
2x Push Button HIISC
2x Push Button SURF2
1x Tx RF Blocks
1x FAN trays
Status LEDs
•States LEDs – GREEN (normal operation) RED (Fault).
Compact Flash Slot
•Compact Flash Card slot – contains 32Mb of memory.
TTY MMI
•TTY MMI – connection for 9 pin D type connector.
Reset Buttons
Reset ButtonsCPU – is a Soft Reset (Reset Controllers Main Processors. Software remains in RAM).FULL – is a Hard reset. Removes software from memory.
CAL Port
•CAL PORT – Calibrates the Sync Block. The 8K Reference is used in GCLK calibration.
NIU Ethernet
Port
Synch/NIU TTY PORT
•The NIU Ethernet and SYNC/NIU TTY Port are for factory use only.
H11SC Front Panel
HIISC Functional Diagram
NIU Block
Line Interface Module
Line Interface Unit &
Framers
TSI (SMURF)
NIU Control
Processor
Radio(s)
Site Control
Processor 8 8
2
8
24?
2
Internal 2048 kbps TDM interface with 32 timeslots.
Control Interface
External E1 or T1 interface.
NIU Port 0 & Port 1
Control via NIU Port 0, TS 0
8
Frequency Reference
Site Controller Card
Internal E1 or T1 interface.
Horizon II macro HSCII Block diagram
E1 Inputsx 6 Currentx 8 Future
Uplink RSLInsertion
16Kbs only SMuRFSync, Mux, uBCU,
Replacement, FPGA
LAPD Encode/Decode
Layer 2 processing
Field Programmable Gate Array (FPGA)
similar function as the ASIC64Kb switch
incapable of sub-rate switching
BTP function of the BTSruns site software andcall processing functions
CTU2dual carrier unit
single/dual carrier operation
single frequency band
Three on board XMUX functionsFMUX equivalent
Second H2SC configured for redundancy
Cabinet Expansion
• The Cabinet can be expanded up to 3x Horizon II macro Cabinets
• Can be expanded with Horizonmacro and Mcell6 cabinet combinations.
• Expansion Kit – 1x XMUX card
1x Input/Output (I/O) card
1x 2m Fibre Optic cable
Cabinet Components – Inter connections
Horizon IICabinet
H-II Radio
NBSCHIISC
Alarm
CTUII radio(s)
TDM
Site IO
H-II ExpansionCabinet
Site IO
XMUX
XMUX
HorizonmacroCabinet
FMUX
FMUX
Alarm
Holdup Unit (AC Supply only)
Cabinet Temperature Control
• Operating range -5 C to +45 C
• Three Internal FAN units – speed controlled
• 3x Cabinet Temperature Sensors – » 1x (70 C) for cabinet alarm» 2x (85 C) to shutdown the cabinet, reset at 55 C.
Horizon II Site Controller (HIISC)
• Performs functions of: MCUF, NIU, FMUX and BPSM in Horizonmacro cabinet.
• Cabinet supports 2x HIISC cards Master/Slave ( redundancy)
• Compact Flash card (32 Mbyte memory)
XMUX in slot 0
• XMUX Location
XMUX Functional Diagram
Site Expansion Board
Connects up to 3x extra cabinets
Fibre optic connections
GPS connector (not supported)
Input/Output (I/O) card
GPS connection
Fibre connections
IN/OUT
SITE I/O PANEL CONFIGURATION
Expansion configurations
Horizon IImacro (6xCTU2)
XMUX
Horizon IImacro (6xCTU2)
E1
Two Horizon II macro’s expanded.
Horizon IImacro (6xCTU2)
XMUX
Horizon IImacro (6xCTU2)
Horizonmacro (6 x CTU)
FMUX
E1
Horizon II macro, expanded to a Horizon II macro and a Horizonmacro.
Expansion configuration (cont)
Horizon IImacro (6xCTU2)
XMUX
Horizonmacro (6 x CTU)
FMUX
FMUX
FMUX
Horizonmacro (6 x CTU)
E1
Horizonmacro controlling a Horizon II macro and another Horizonmacro.
M-Cell 6 controlling a Horizon II macro and a Horizonmacro.
Horizon IImacro (6xCTU2)
XMUX
M-Cell 6 (6 x TCU)
FMUX
FMUX
FMUX
Horizonmacro (6 x CTU)
E1
Cabinet Alarm Module
• Collects All internal Cabinet Alarms
• Controls the PIX connection (customer external alarms)
• Process Antenna VSWR alarms
Note: NOT backwards compatible to the Horizonmacro cabinet
Alarm BoardMains
Door 1
LVD
Fan 0
Fan 1 & 2
ALL LEDs are GREEN when the equipment is OK
RED when equipment is faulty
Only 4x active Displays
Compact Transceiver Unit (CTU2)
CTU2
Compact Transceiver Unit ( CTU2)
Single Density Mode – High Power 63W (48dbm) 900MHz
50W (47dbm) 1800MHz
Normal Power 20W (43dbm) 900MHz
16W (42dbm) 1800MHz
Double Density Mode –Normal Power 20W (43dbm) 900MHz
16W (42dbm) 1800MHZ
CTU2 backwards compatibility
Compact Transceiver Unit 2 (CTU2)
Backwards compatible with Horizonmacro Cabinet (with minor limitations).
• Requires the correct software ( GSR6 HII)• Can NOT support the CCB controller function• O/P power reduced when in Double Density Mode• BBH not supported
CTU2 Receiver Sensitivity Performance
EGSM900• -110.5 dBm, static channel• -107.5 dBm, faded channel•
DCS1800• -111.5 dBm, static channel• -108.5 dBm, faded channel•
Compact Transceiver Unit 2 (CTU2)
TRANSMIT RF OUT
TEST INTERFACE
TTY INTERFACE
Radio Status LED
Tx Status A
LED
Tx Status B
LED
VCAT INTERFACE
CTU2 to SURF2 interconnection
Second SURF2 not supported (4 branch diversity)
PA Branch 1
PA Branch 2
PA Temp.
2nd Temp.
Fwd Power Detect A
Fwd Power Detect B
Rev Power Detect
Phase Adjust
Branch B VVA
Branch A VVA
PA Mode Switches
PA Pad Switches
Basic Block Diagram – TX (PA only)
RF Equipment
RF Equipment
Sectorized Universal Receiver Front end (SURF2)
SURF2 Functional diagram
3x Ant ports with 2x Branches each
Expansion
CTU2
Signal
Tx Block
Rx Filter
Tx Filter
VSWRMonitor
AlarmBoard
AntennaTo SURF
Tx
• The Antenna VSWR monitoring function is used to detect faults in antennas or antenna path connections.
VSWR Monitoring
Cabinet TX Blocks
Transmitter RF Blocks
New RF Blocks:
• DUP - Duplexer
• HCU - Hybrid Combiner Unit
• DHU - Dual Hybrid Combiner Unit
Connecting Panels
• Blanking Plate
• Feedthrough plate
Transmitter Blocks
Blanking Plate
Used to control the Air flow within the cabinet
Feedthrough Plate
Duplexer- DUP
•Connects a single CTU2 to a single Tx/Rx Antenna.
•Typical 1db loss.
DUP Block diagram
Hybrid Combiner Unit - HCU
HCU
•Used to connect 2x CTU2 via a Hybrid
•Typical 3-4db loss
HCU- Block diagram
Typical 3-4db loss
Dual Hybrid Combiner Unit - DHU
Typical 6 db loss
Dual Hybrid Combiner Unit - DHU
6dbs typical loss
Software and Database Requirements
• New Cabinet Type - horizonmacro2 (24)
- horizonmacro2_ext (25)
• Equipping the DRI Density is requiredSingle or Double
(called the associated DRI)
• Setting CTU2 to High Power (max_tx_bts= -1)
MMI Command : equip <site number> DRIEnter the 1st and 2nd DRI id: 0 0Enter the density of this DRI: SINGLEEnter the cabinet identifier: 0Enter the type of connection to the BTP: masterEnter the port to which the TCU is connected: 0Enter the 1st and 2nd RTF id: Enter the GSM cell ID where the DRI appears: 1 2 3 9 9 4 21Enter antenna select number for this cell: 1Does this DRI use tuneable combining: noEnter diversity flag for this DRI: 1Enter the fm cell type: 4
Equipping a DRI – Single Density
New line within the command
MMI Command: equip <site number> DRIEnter the 1st and 2nd DRI id: 0 0Enter the density of this DRI: DOUBLEEnter the 2nd DRI id of the associated DRI: 1Enter the cabinet identifier: 0Enter the type of connection to the BTP: masterEnter the port to which the TCU is connected: 0Enter the 1st and 2nd RTF id: Enter the GSM cell ID where the DRI appears: 1 2 3 9 9 4 64Enter antenna select number for this cell: 1Enter diversity flag for this DRI: 1Enter the fm cell type: 4
Equipping a DRI – Double Density
Associated DRI Number
CTU2 High Power parameter• DRI equipped in SINGLE Density Mode only
• Parameter max_tx_bts = -1 (per cell basis)• Parameter tx_power_cap =1 (DCS1800 only)
• RF power EGSM900 DCS1800
63W (48dbm) 50W (47dbm)