BS-240 / BS-241Base Transceiver Stations

BS-240/241 is the new future-proof

evolution of Siemens’ BTS hard-

ware. Highlights are 24 TRX in

3 racks with 8 TRX each, signifi-

cantly reduced volume per TRX,

and a future-oriented platform for

new GSM features. Siemens’ latest

model base stations are already

prepared for UMTS.

Product Profile

Increasing demands for highercapacity are met by BS-240/241through reduced volume and anexpanded number of 24 TRX in3 racks with a modularity of 8 TRXper rack.This also makes the BS-240/241 a powerful dualband basestation for GSM900 and GMS1800,as well as for GSM900 andGSM1900.

A full spectrum of combining equip-ment means high output power anda minimized number of antennae forall cell configurations. High receiversensitivity is also guaranteed. Afuture SDMA option is planned.The modular architecture and theflexible internal structure with datarates of up to 2MBit/s enables theBS-240/241 to provide new GSMfeatures such as EDGE.This platformensures that network evolution is assmooth as possible.The use of lat-est technology reduces power con-sumption and improves reliability.

Customer Benefits

■ Compatibility with existing SBSensures easy integration into thealready installed infrastructure

■ Possible site configurations of up to72 TRX/site prepares for increasingcapacity requirements

■ Highest reliability thanks to redun-dancy for all core modules

■ Reduced investment costs due tointegrated Abis cross connect(8 PCM lines)

■ Fast network rollout: approximately50% fewer sites required due tohigh RX sensitivity and high outputpower

■ BS-240/241 can consist of up to8 racks: 1 base rack, 1 or 2 exten-sion racks and up to 5 service racks

■ Pre-installed commissioningreduces installation time to lessthan one hour

■ No service interruption for rackextension orTRX exchange

■ Smart antennae (beam switching)option increases capacity

■ High site efficiency due to reducedvolume of 54 liters/TRX and smallfootprint

■ Architecture prepared for futureGSM features (e.g. EDGE): functional, modular internal struc-ture, highly flexible signal process-ing capacity, exchangeable RFfrontend

Compatibility

The BS-240/241 are compatible withthe existing Siemens BS-20/21/22 andBS-60/61 products. An easy expansionof installed networks with the new BS-240/241 is possible. Software featureswill run independently on all BTStypes.

AC

OM

#0

AC

OM

#1

AC

OM

#2

AC

OM

#3

CU

#0

CO

BA

#0

CO

SA

#0

CO

BA

#1

CO

SA

#1

CU

#1

CU

#4

CU

#5

CU

#2

DIA

MC

O #

0

DIA

MC

O #

1

CU

#3

CU

#6

CU

#7

Technical Data BS-240 Indoor applicationCarriers per rack 8Height x width x depth 1600 x 600 x 450 mmVolume net 432 lOperation acc. to ETSI 3.1ETemperature range – 5 °C to + 55 °CIntegrated power supply – 48 V DCMax. power consumption 1.3 kWOutput power GSM900 60 WOutput power GSM1800 40 WOutput power GSM1900 40 WBatterie backup available

AC

OM

#0

AC

OM

#1

AC

OM

#2

AC

OM

#3

CU

#0

CO

BA

#0

CO

SA

#0

CO

BA

#1

CO

SA

#1

CU

#1

CU

#4

CU

#5

CU

#2

DIA

MC

O #

0

DIA

MC

O #

1

CU

#3

CU

#6

CU

#7

Plinth

Technical Data BS-241 Outdoor applicationCarriers per rack 8Height x width x depth 1750 (incl. plinth) x 700 x 650 mmVolume net 705 lOperation acc. to ETSI 4.1ETemperature range(including solar radiation) – 45 °C to + 50 °CIntegrated AC/DC 0.72– 8.6 kWMax. power consumption 1.85 kWOutput power GSM900 60 WOutput power GSM1800 40 WOutput power GSM1900 40 WBattery backup availableMicrowave hardware integrated

Feature Overview

■ Frequency bands: GSM900/R-GSM/GSM1800/GSM1900

■ Dual band (GSM900/1800 andGSM900/1900 in the same BTSrack)

■ Site configurations up to72 TRX/site, up to 24 TRX/cell and24 cells/site

■ High power amplifier (60W) and upto –116 dBm RX sensitivity

■ Core redundancy and AC/DC redun-dancy

■ Duplex combiner■ Filter combiner■ Filter combiner with High Power

Duplexer (HPDU)

■ Tower Mounted Amplifier (TMA)with intelligent reliability manage-ment

■ Smart antennae (beam switching)option

■ Integrated Abis cross connect(8 PCM24/30 lines)

■ Integrated NTPM and µ-waveequipment, optional battery backupin a service rack

■ High flexibility of site configurationsthanks to service rack

■ State-of-the-art technology, envi-ronmentally friendly, recyclable

■ 48 external alarms, 8 site outputsper rack

■ Rack extension without serviceinterruption

■ Hot plug-in ability of TRXs■ Short software upgrade time■ Improved MTBF

!Contact us!

Visit our website athttp://www.siemens.com/ic/networks/ca

Abbreviations

AC Alternating CurrentACOM Antenna COMbiningBS Base StationBTS Base Transceiver

StationCOBA COre BAsic moduleCOSA COre SAtellite moduleCU Carrier UnitDC Direct CurrentDIAMCO Diversity Amplifier

Multi COuplerEDGE Enhanced Data rates

for GSM EvolutionETSI European

TelecommunicationsStandard Institute

GSM Global System forMobile Communication

HPDU High Power DUplexer

MTBF Mean-Time BetweenFailures

NTPM Network TerminationPrimary Multiplex

PCM Pulse Code ModulationRF Radio FrequencyR-GSM Railway-GSM bandRX ReceiverSBS Siemens Base Station

SystemSDMA Space Division

Multiple AccessTMA Tower Mounted

AmplifierTRX TransceiverUMTS Universal Mobile

TelecommunicationsSystem

COPYRIGHT© • Siemens AG 1999 • Information and Communication Networks • Communication on Air • Hofmannstr. 51 • 81359 Munich • Germany •

Order No. A50001-N3-P43-3-7600 • Printed in the Federal Republic of Germany • MR M514 SIE_559_99 PA 10995.

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Technical Data RF BS-240/241

GSM900 Prim. Band Ext. BandUplink range 890-915 MHz 880-890 MHz Downlink range 935-960 MHz 925-935 MHz

GSM-R Frequency BandUplink range 876-915 MHzDownlink range 921-960 MHz

GSM1800 Frequency BandUplink range 1710-1785 MHzDownlink range 1805-1880 MHz

GSM1900 Frequency BandUplink range 1850-1910 MHzDownlink range 1930-1990 MHz