Flexi EDGE BTS.ppt

8/14/2019 Flexi EDGE BTS.ppt

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Nokia Flexi EDGE BTS Overview

Module Descriptions

Installations/Configurations

Commissioning/Integration


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Flexi EDGE BTS is a modular base station for GSM/EDGE capacity and coverage. Its

modular design makes site acquisition and installation easier, reducing the time needed

for rolling out network coverage in a new area. Flexi EDGE BTS allows using existing site

space sparingly and efficiently.

Flexi EDGE BTS introduces GSM/EDGE modules to the Flexi BTS family. Flexi EDGE BTS is

based on the same Nokia Flexi platform as Flexi WCDMA BTS, enabling efficient

multiradio sites including GSM/EDGE and WCDMA/HSPA and other radio technologies

such as WiMAX in the future.

Flexi EDGE BTS is highly integrated. For example, it supports up to 24 TRXs (12 Dual

TRXs) in the volume of a traditional single BTS cabinet. There is virtually no limit to site

capacity, due to synchronised Flexi EDGE BTS chaining.

Flexi EDGE BTS provides top-of-class RF performance with balanced link, similar toexisting UltraSite EDGE BTS. In standard Capacity mode, it provides TRX output power

of 47 dBm (ca. 46 dBm at BTS antenna port in combiner by-pass configuration) and

system sensitivity of -115.5 dBm. Double Power TRX and coverage features secure an

even higher performance for coverage-limited environments.


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Constructions and Modules

A functional Flexi EDGE BTS can be built with just two logical modules: Flexi EDGE

System Module and Flexi EDGE Sector Module. The Sector Module is a logical unit

consisting of two building blocks: Dual TRX Module (EXxA) and Dual Duplexer Module

(ERxA). Typically one Sector Module is needed per sector. Sector expansions are done

just by adding more Dual TRXs and optional Wideband Combiners (WBCs). Another

option is to use the Remote Tune Combiner Module together with Dual TRX Modules;the Dual Duplexer Module is then not needed.

Flexi EDGE System Module (ESMA)

Flexi EDGE Dual TRX Module (EXxA)

Flexi EDGE Dual Duplexer Module (ERxA)


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Flexi EDGE System Module


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The System Module (ESMA) is a unit providing BTS common functionalities and

external and internal connections for the whole BTS. The BTS software is stored in the

System Module.

The System Module also receives and stores the unit identification information of all

other units of the BTS. The System Module supports configurations of up to 12 TRXs.

This equals to 6 x Dual TRX Modules (EXxA). For larger configurations, the System

Extension Module (ESEA) is used along with the System Module.

One ESMA is always needed per BCF (object in BSC)

The main functions of the System Module are:

BTS O&M

BTS integrated transport

Module bus control and BTS synchronisationPower distribution (48 VDC) to other modules


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BTS O&M

Main BTS O&M functions are:

Software downloading (There can be simultaneously two software versions in a System Module)

Configuration management (BTS configuration autodetection)

Alarm handling and recoveryBTS reference clock management

External alarms and controls (EAC). The System Module provides 6 BBU alarms inputs, 12 external

alarm inputs and six control output connections. When more than 12 external alarm inputs are

needed, a System External Alarm Module (FSEB) can be used.

BTS integrated transportThe System Module handles external and internal transmission of the BTS. It has the physical

transmission interfaces from the BTS to the BSC, and it terminates the Abis interface.

There are four different network interface alternatives in TDM mode:

E1 symmetric 120 ohms, RJ48

T1 symmetric 100 ohms, RJ48

E1 asymmetric 75 ohms, SMB

Nokia FlexBus for Nokia microwave radios, TNC

There are two different network interface alternatives in PW mode:

100Base-T Ethernet (RJ48)

1000Base-LX or 1000Base-SX optical Gigabit Ethernet (requires additional SFP module)


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Sub Module Type Interface Number of Interfaces per System Module

E1/T1 and PWE transmission sub-module (FIQA)

E1/T1 (symmetric) 4

100Base-T Ethernet 2(1 interface usable)

1000Base-LX or 1000Base-SX Ethernet 1

FIQA


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Module Bus Control and BTS Synchronisation

The System Module has an integrated BTS internal and external synchronisation functionality. It can

be synchronised to the incoming Abis line or to an external synchronisation source (other BTS or

Location Measurement Unit, LMU). It distributes the clock signals within the BTS and can maintain

clock synchronisation if the external synchronisation source is lost.

The System Module also acts as a main communication link within the BTS and the connected

modules (Dual TRX module, Remote Tune Combiner module) via the Module Bus.

Power Distribution

The operating power is supplied to Flexi EDGE BTS from a single point in the System Module.

The System Module distributes the 48 VDC power further to up to six other modules of the

BTS. The power distribution capability can be increased with an additional System Extension

Module. The main function of the System Extension Module is to increase the number of

Dual TRX Module connections.

There is a stand-by switch (PWR) on the front panel of the System Module power

distribution unit. The switch is used for switching System Module unit power ON/Stand-by

when DC input voltage is connected. When DC power is connected to the System Module,

the default mode is "ON", even if the last mode was "Stand-by" when DC power was

disconnected. Switching to "Stand-by" mode disables power to all Dual TRX Modules

connected to the System Module.


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System Module (ESMA) Main Blocks


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System Module (ESMA) main blocks

System Module (ESMA) includes the following functional blocks:

System control block

BTS O&M

TRS O&M

Transport network layer procedures

System Module control

System timing block

Common system reference frequency and air interface timing generation

BTS frame clock and frame number generation

Interface to Location Measurement Unit (LMU)External synchronization I/O


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Dual TRX Module (EXxx)

The Dual TRX Module (EXxx) is a two-carrier TRX unit. The module contains the common (2 carrier)

baseband part and two separate RF parts for two transceivers (transmitter and receiver chains) andspace for two optional Wideband Combiner Modules (Ewxx).

The Dual TRX Module (EXxB) hardware can simultaneously support the following future BSS

features:

Full Voice services over Adaptive Multi-user Orthogonal Sub channels (VAMOS)

Enhanced General Packet Radio Service Evolution (EGPRS2)

The Dual TRX Module (EXxx) is used as:

a combined module with the Dual Duplexer Module (ERxx), making a logical Sector Module

or a stand-alone TRX module with the Remote Tune Combiner (ECxA) Module

or a stand-alone extension TRX module.

The Dual TRX Module and System Module (ESMA) communication is managed through a singleEthernet interface. Each transceiver within the Dual TRX Module can be separately activated with a

licence key at the BSC.


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The Dual TRX Module contains two transceivers that can be used:

as a separate TRX in the same sector

as a separate TRX in different sectors

or as a Double Power TRX.or as an Intelligent Downlink Diversity (IDD) TRX.

There are separate Dual TRX Modules for each frequency band that Flexi EDGE BTS

supports:

EXTxGSM800

EXGxGSM900

EXDxGSM1800

EXPxGSM1900


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Dual TRX Module (EXxx) main blocks

The Dual TRX Module (EXxx) includes the following functional blocks:

Baseband

TRX, O&M, telecom and digital signal processing (DSP)

Ethernet interface for control, user and baseband hopping data

Synchronisation

Digital up/down conversion and filtering

TX and RX data conversion

TX Double Power support

Intelligent Downlink Diversity (IDD)

4-way Uplink Diversity support

RX 4-Way Interference Reject Combining (IRC) support

Temperature management

Power supply

Power distribution of TRX internal supply voltages

Transmitter

Direct conversion from TX interface to TX RF

Digital power control

TX Double Power and IDD support


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Receiver

Dual down-conversion from RX RF to RX interface

Diversity reception

Digital Automatic Gain Control (AGC)

Synthesisers

Local oscillator signals for TX and RX up/down conversions

Frequency hopping capability on timeslot basis

Fan Module


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Property Value

Nominal system voltage 48 V DCInput voltage range 40.5 - 57 V DC

Dual TRX Module (EXxx) power requirements

EXTx/EXGx (800/900) EXDx (1800) EXPx (1900)

Maximum 325 W 365 W 385 W

Nominal 295 W 335 W 355 W

Idle39 W (EXTA/EXGA)

45 W (EXTB/EXGB)

37 W (EXDA)

50 W (EXDB)

37 W (EXPA)

50 W (EXPB)

One PA in use 180 W 200 W 210 W


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Dual TRX Module (EXxx) interfaces


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Label name on

module

Description Connector type Cable type Interface(s) Signal direction

(to/from the module)

BUS

Ethernet (1000 Base-

T/100 Base-TX)

baseband processing

of end user, hopping,

synchronisation, and

O&M data

MDR 26 (female)

Bus cable, AWG30

Twinax, MDR 26

(male)

length: 1054/1554

mm (41.5/61.2 in.)

ESMA, ESEATo and from the

module

ER_APower and control

interface for the ERxAMDR 36 (female)

ERxA cable, MDR 36

(male)

hard-wired with

other end fixed to

ER_A

length: 200 mm (7.9

in.)

ERxATo and from the

module

PWR-48 VDC input power

with fuse protection

Multi-Beam XL

(female)

Power cable, 2 x

AWG12, Multi-Beam

XL (male)

length: 1188/2000

mm (46.8/78.7 in.)

ESMA, ESEATo and from the

module

DP

Synchronous

combining of both

transmitters in themodule to generate

one GSM/EDGE carrier

capacity with

increased output

power

NOTE: Interface to the

EWxA (required

module with the DP

feature)

Molex Microfit (male)

DP cable, 4 x AWG24,

Molex Microfit

(female)

length: 203 mm (8.0

in.)

EWxATo and from the

module


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RxA, RxB (blue)

Receives a digitally

modulated

GSM/EDGE RF carrier

in accordance with

the appropriate

telecommunications

standard (Rx input)

QMA (female)

RF cable, SemiFlex

50, QMA (male)

length:

172/275/1300 mm

(6.8/10.8/51.2 in.)

ERxA, ECxA To the module

RxA Div , RxB Div(blue)

Four-way uplink

receive diversity

(4UD)

NOTE: This connector

is also used in 2UDconfigurations which

require splitting an

EXxx between cell

areas (for example,

cost optimized

configurations, 1+3).

QMA (female)

RF cable, SemiFlex

50, QMA (male)length:

172/275/1300 mm

(6.8/10.8/51.2 in.)

ERxA, ECxA To the module

TxA, TxB (red)

Transmits a digitally

modulated

GSM/EDGE RF carrier

in accordance with

the appropriate

telecommunications

standard (Tx output).

QMA (female)

RF cable, SemiFlex

50, QMA (male)

length:

172/275/1300 mm

(6.8/10.8/51.2 in.)

ERxA, EWxA, ECxA From the module


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Colour Explanation

Cycling colours BTS has requested highlighting for TRX module and timer is still running.

Red, blinking

7606 alarm is active on one of the carriers or

7607 alarm is active on one or on both carriers.

7607 alarm on IDD TRX or DPTRX TRX object.

Red, stable

TRX_OM SW is not running or

7606 alarm is active on both carriers.

7606 alarm on IDD TRX or DPTRX TRX object.

Yellow, blinking

TRX_OM SW state is Clock sync or

one or both carriers are in TRX_OM SW state TRX configuring, Wait for OMUSIG

establishment or Wait for system information.

Yellow, stable

Both carriers are blocked from BTS or

both carriers have TRXSIG channel disconnected when in TRX_OM SW state is

supervisory.

IDD TRX or DPTRX object blocked/locked or IDD TRX or DPTRX TRX object is

Shutdown (but is still providing power/control for DDU supporting other TRX's or

are powered due to malfunctioning e.g. power cycle in ESEA) from BSC or

IDD TRX or DPTRX TRX object has TRXSIG channel disconnected when the carrier

state is supervisory.

Green, blinking

Only one carrier is in the supervisory state and no 7606 or 7607 alarm is active

and LAPD on TRXSIG is connected for this carrier, or.

both carriers are in supervisory state but one carrier has LAPD on TRXSIG channel

disconnected.

Not applicable when the TRX module is configured for IDD TRX or DPTRX TRX

object.

Green, stable

Both carriers are in TRX_OM SW state supervisory and no 7607 or 7606 alarms

are active.

IDD TRX or DPTRX TRX object is in supervisory state and no 7606 / 7607 alarmsare active and TRXSIG is connected.

Dual TRX Module (EXxx) LED indications

The Dual TRX Module (EXxx) has two tri-colour LEDs on the front panel to indicate the operational status of the

module and all fault conditions during operation.


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Dual Duplexer Module (ERxA)

The Dual Duplexer Module and the Dual TRX Module (EXxA) create one Sector Module. At least one Dual Duplexer Module is

needed per sector, depending on the configuration (concerns non-RTC configurations).

The Dual Duplexer Module is always attached to the Dual TRX Module, which provides the Dual Duplexer Module with powerand O&M link. Extension Dual TRX Modules are installed without the Dual Duplexer Module.

The Dual Duplexer Module provides two antenna connections (configured from 1 or 2 sectors) of Flexi EDGE BTS for by-pass

and wideband combined configurations.

The Dual Duplexer Module supports antenna sharing (co-siting) with another BTS as long as the frequency range meets the

given Nokia specifications.

The Dual Duplexer Module contains two duplex filters, two low-noise amplifier (LNA) chains, two Bias-Ts, and a common TRX

loop for TRXs in one sector. The TRX loop is controlled through the Sector Module.

The Bias-T is a circuit and function to supply power to an MHA. The Return Loss monitor is a separate circuit and function that is

independent of the Bias-T. The functionality is now in the Dual Duplexer Module, and a separate unit on top of BTS cabinets

common in traditional solutions is no longer needed.

The MHA current monitor allows the BTS to determine an alarm or fault condition of the MHA.

The TX forward power alarm allows the BTS to report an alarm if insufficient TX power is at the DDU's TX connector.

The LNAs have two gain states:

1. high-gain and

2. adjustable low-gain settings.


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The high-gain state (HGS) is the default mode when the BTS is not configured with an MHA. The low-gain state

(LGS) is used when the BTS is configured with an MHA; the LGS settings, which are in 0.5dB steps, are used to

overcome the cable loss for the cable connecting the MHA to the DDU's antenna connector.

There is a separate Dual Duplexer Module for each frequency band:

ERTAGSM800ERGAGSM900 full band

ERHAGSM900 SB-H

ERJAGSM900 SB-J

ERDAGSM1800 full band

ERPAGSM1900 full band

Band RX (MHz) TX (MHz) ARFN

900

(ERGA) / (E-GSM)

890.0915.0

880.0890.0

935.0960.0

925.0935.0

1124

9751023.0

900J (ERJA) 890.0915.0 935.0960.0 1124

900H (ERHA) 897.5

915.0 942.5

960.0 38

124

1800 (ERDA) 1710.01785.0 1805.01880.0 512885

1900 (ERPA) 1850.01910.0 1930.01990.0 512810

800 (ERTA) 824.0849.0 869.0894.0 128251


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The Dual Duplexer Module can store two software versions: Active and Backup. The Dual Duplexer

Module is always connected to a Dual TRX Module. After a Dual TRX Module reset, the Dual Duplexer

Module software version is checked. If the Dual Duplexer Module does not contain correct software

matching with the running BTS software version, the new Dual Duplexer Module software is downloaded

from the Dual TRX Module.


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Dual Duplexer Module (ERxA) main blocks

The Dual Duplexer Module (ERxA) includes the following functional blocks:

Duplex Filter

RX and TX filtering

TX and RX coupling to one antenna interface

RX Front End

RX low-noise amplifier (LNA)

RX Multicoupling

Support for co-siting (antenna sharing)

TRX Loop

TRX loop path between Dual Duplexer Module's TX input and RX output

Signal mixing from TX to RX band

Timeslot-based capability to run loops

Loop connection capability from either TX input to any RX Output

Bias-T alarm

Masthead amplifier (MHA) interface and power supply

Antenna supervisory

Return Loss monitor values are reported to the TRX O&M.

The MHA current monitor allows the BTS to determine an alarm or fault condition of the MHA.

The TX forward power alarm allows the BTS to report an alarm if insufficient TX power is at the DDU's TX connector.


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Label name on module Description Connector type Interface(s)

Ant A, Ant B Antenna interface 7/16Antenna jumper or feeder

cables

TxA, TxB (red) 2 Tx inputs QMA EXxA, EWxA, EWxB

ExtA, ExtB (blue) 2 external Rx outputs QMA External receiver

ExtA

RxAO

Provides an external BTS with

the RX diversity signal from ANT

A when antenna sharing (co-

siting) is used.

QMA

External BTS NOTE: The pre-

installed RxAO-RxAI cable on the

Dual Duplexer Module must

remain connected for all

standard, non-antenna sharing

configurations. It is required for

a complete RF path from ANT A

to RxA1-4. See the figure in

section Dual Duplexer Modulemain blocks for an illustration.

RxAI

Receives Rx signal input from an

external BTS source when

antenna sharing (co-siting) is

used. It is connected to RxA1-4.

QMA

External BTS NOTE: The pre-

installed RxAO-RxAI cable on the

Dual Duplexer Module must

remain connected for all

standard, non-antenna sharing

configurations. It is required for

a complete RF path from ANT A

to RxA1-4. See the figure in

section Dual Duplexer Module

main blocks for an illustration.

ExtB

Provides an external BTS with

the RX diversity signal from ANT

B when antenna sharing (co-

siting) is used.

QMA External BTS


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Colour Explanation

RedDual Duplexer Module software is not running, or

Major alarm (on both antenna paths)

Red, blinkingMinor alarm (on one or both antenna paths), or

Major alarm (on one antenna path)

Yellow, blinking SW start-up or configuration ongoing

Green Module operational (cell can be locked in BSC)

Green, blinking Module is loading software

Dual Duplexer Module (ERxA) LED indications

The Dual Duplexer Module (ERxA) has one tri-colour LED on the front panel to indicate the operational status of the

module and all fault conditions during operation.


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Flexi EDGE Remote Tune Combiner Module

The optional Remote Tune Combiner (RTC) Module combines up to six TX signals from the Dual TRX

Modules together into a single TX antenna with a minimum loss in large configurations. It also provides

the antenna connections for duplexed RX and TX signals, as well as antenna connection for RX diversity

signal. The Remote Tune Combiner Module is always used together with Dual TRX Modules; the DualDuplexer Module is then not needed. The System Extension Module is needed with the Remote

Tune Combiner Module. The Remote Tune Combiner Module supports antenna sharing (co-siting) with

another BTS.

ECxA can only be installed in a cabinet and it is available for the following ETSI frequency bands:

ECGA 900 MHz

ECJA 900 MHz J-subband

ECDA 1800 MHz


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Flexi EDGE Remote Tune Combiner(ECxA) Block Diagram

The Remote Tune Combiner can store two software versions: Active and Backup. After a sector or RTC

reset, the Remote Tune Combiner software version is checked. If the Remote Tune Combiner does not

contain correct software matching with the running BTS software version, the new Remote Tune Combiner

software is downloaded from the System Module (ESMA) via the System Extension Module (ESEA)


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Remote Tune Combiner (ECxA) Module LED indications

Remote Tune Combiner Module (ECxA) has one tri-colour LED on the front panel to indicate the operational

status of the module and all fault conditions during operation


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Creating Configurations for Flexi EDGE BTS

Unit ESMA BUS ESMA PWR ESEA BUS ESEA PWR

EXxA 1 1 1/7

EXxA 2 2 2/8

EXxA 3 3 3/9

EXxA 4 4 4/10

EXxA 5 5 5/11

EXxA 6 6 6/12

EXxA 7 4/10 7

EXxA 8 5/11 8

EXxA 9 6/12 9

ECxA 1 1 1/7

ECxA 2 2 2/8ECxA 3 3 3/9

Bus and power cabling principles for ECxA configurations

Bus and Internal Power Cabling Principles


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Unit ESMA BUS ESMA PWR ESEA BUS ESEA PWR

EXxA 1 1 1/7

EXxA 2 2 2/8

EXxA 3 3 3/9

EXxA 4 4 4/10

EXxA 5 5 5/11

EXxA 6 6 6/12

EXxA 7 4/10 7

EXxA 8 5/11 8

EXxA 9 6/12 9

EXxA 10 1/7 10

EXxA 11 2/8 11

EXxA 12 3/9 12

Bus and power cabling principles for ERxA configurations

The following main principles for bus and internal power cabling apply to configurations requiring


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The following main principles for bus and internal power cabling apply to configurations requiring

a System Extension Module (ESEA):

All configurations having a Remote Tune Combiner Module (ECxA), and

All configurations having a Dual Duplexer Module with 13-24 carriers (7-12 Dual TRX Modules (EXxA)).

Bus and internal power cabling principles:

Make sure to connect a bus cable from BUS OUT on the System Module (ESMA) to BUS IN on

the System Extension Module.

Connect all Dual TRX Module bus cables to the System Extension Module.

Connect all Remote Tune Combiner Module bus cables to the System Module.

For Remote Tune Combiner Module configurations, the Dual TRX Module numbering should be from 1-9 from

bottom to top. The Remote Tune CombinerModule numbering should be from 1-3 from lowest tohighest. Module bus and power cables must be connected to the System Module or System ExtensionModule, as

specified inTable Bus and power cabling rules for ECxA configurations.

For Dual Duplexer Module configurations, Dual TRX Module numbering should be 1-12 from bottom to top.

Connect the module bus and power cables to theSystem Module or System Extension Module port, as specified in

Table Bus and power cabling principles for ERxA configurations.

Use an extension bus cable 994939 to connect the top (or farthest) Dual TRX Module tothe System Extension Module. For all other Dual TRX Moduleconnections, use the standard bus cable 994938.

Two 994939 cables are provided in the System Extension Module delivery. Keep the other cable as a spare. It can

be used to connect the System ExtensionModule to the System Module, or to connect another Dual

TRX Module to the System Extension Module if required by 3rd party cabinet installations or if there are other

special cable routing requirements.


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Sample Configuration:

1+1+1/2+2+2 ERxx Configuration


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External power cables in 1+1+1/2+2+2 FCIA

configuration


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Connecting Bus Cables in FCIA Installation


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Connecting Bus Cables in FCIA InstallationPurpose:

The bus cables are connected between the System Module (ESMA) and each of the Dual TRX (EXxA)

Modules

Same w/ Cabinet Configuration

Connecting Internal Power Cables in FCIA Installation


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Same w/ Cabinet Configuration

Connecting Internal Power Cables in FCIA InstallationPurpose

The internal power cables are connected between the System Module (ESMA) and each of the Dual TRX

Modules (EXxA) and the optional Remote Tune Combiner Modules (ECxA). The cables are used to distribute

power to the Dual TRX Modules or Remote Tune Combiner Modules


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Connecting RF Cables

Purpose

RF cables are connected between the Dual TRX Module (EXxA) and Dual Duplexer Module (ERxA),

Wideband Combiner Sub-module (EWxx) or Remote Tune Combiner Module (ECxA), or between the

Dual Duplexer Module and Wideband Combiner Submodule.

Antenna jumper cable


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Sample Configuration:

4+4+4 RTC 1UD or 2UD configuration

To create a 4+4+4 RTC 1UD or 2UD configuration, you need:

6 Dual TRX Modules (EXxA)

1 System Module (ESMA

1 transmission sub-module (FIxA) 3 Remote Tune Combiner Modules (ECxA)

1 System Extension Module (ESEA)



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To create this configuration, you need:


1 System Module (ESMA)

1 transmission sub-module (FIxA)

3 Remote Tune Combiner Modules (ECxA) 1 System Extension Module (ESEA)

Dual Duplexer Configurations


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Dual Duplexer Configurations

4+4+4 2-way 2UD configuration

For creating this configuration, you need:


3 Dual Duplexer Modules (ERxA)

1 System Module (ESMA) 1 transmission sub-module (FIxA)

6 Wideband Combiner Sub-modules (EWxx)

1 FCIA

Cabling Connections


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RF Cabling Connections


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8+8+8 4-Way Configuration

To create an 8+8+8 4-Way 2UD configuration, you will need

the following modules:


3 Dual Duplexer Modules (ERxA)

18 Wideband Combiner Sub-modules (EWxx)

1 System Module (ESMA)

1 System Extension Module (ESEA)


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Accessing Flexi EDGE BTS

IP:

192.168.255.130

255.255.255.128

192.168.255.129


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SW Upgrade


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Undo commissioning

Manual commissioning


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Flexi EDGE BTS.ppt

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