motorola bts training

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)