geran br bs-240 ii product description

GSM/EDGE RAN - BR line

Product descriptionBase transceiver station equipment

BS-240 II / 240 II B / 241 II / 241 II Bproduct description

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The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. The documentation has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation.

The information or statements given in this documentation concerning the suitability, capacity, or performance of the mentioned hardware or software products are given "as is" and all liability arising in connection with such hardware or software products shall be defined conclusively and finally in a separate agreement between Nokia Siemens Networks and the customer. However, Nokia Siemens Networks has made all reasonable efforts to ensure that the instructions contained in the document are adequate and free of material errors and omissions. Nokia Siemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues which may not be covered by the document.

Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NO EVENT WILL Nokia Siemens Networks BE LIABLE FOR ERRORS IN THIS DOCUMENTA-TION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, DIRECT, INDI-RECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUT NOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESS OPPORTUNITY OR DATA,THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THE INFORMATION IN IT.

This documentation and the product it describes are considered protected by copyrights and other intellectual property rights according to the applicable laws.

The wave logo is a trademark of Nokia Siemens Networks Oy. Nokia is a registered trademark of Nokia Corporation. Siemens is a registered trademark of Siemens AG.

Other product names mentioned in this document may be trademarks of their respective owners, and they are mentioned for identification purposes only.

Copyright © Nokia Siemens Networks 2008-2009. All rights reserved

f Important Notice on Product Safety Elevated voltages are inevitably present at specific points in this electrical equipment. Some of the parts may also have elevated operating temperatures.

Non-observance of these conditions and the safety instructions can result in personal injury or in property damage.

Therefore, only trained and qualified personnel may install and maintain the system.

The system complies with the standard EN 60950 / IEC 60950. All equipment connected has to comply with the applicable safety standards.

The same text in German:

Wichtiger Hinweis zur Produktsicherheit

In elektrischen Anlagen stehen zwangsläufig bestimmte Teile der Geräte unter Span-nung. Einige Teile können auch eine hohe Betriebstemperatur aufweisen.

Eine Nichtbeachtung dieser Situation und der Warnungshinweise kann zu Körperverlet-zungen und Sachschäden führen.

Deshalb wird vorausgesetzt, dass nur geschultes und qualifiziertes Personal die Anlagen installiert und wartet.

Das System entspricht den Anforderungen der EN 60950 / IEC 60950. Angeschlossene Geräte müssen die zutreffenden Sicherheitsbestimmungen erfüllen.

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Table of contentsThis document has 109 pages.

Reason for update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.2 Overview of the functionality - main features of BS-240 II / 241 II / 241 II B

10

2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3 Hardware architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153.1 Rack/shelter configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.2 Special arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4 Module description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264.2 Core modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.2.1 Core basis (COBA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334.2.2 Core satellite (COSA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344.2.3 Core link extension (COREXT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344.2.4 Core redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354.3 Carrier related modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384.3.1 Carrier units (CU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384.3.2 GSM carrier unit (GCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384.3.3 EDGE carrier unit (ECU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384.3.4 Flexible carrier unit (FlexCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394.3.5 Carrier unit output power level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404.4 Antenna combining modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414.4.1 Duplexer amplifier multicoupler (DUAMCO) . . . . . . . . . . . . . . . . . . . . . 414.4.2 Flexible duplexer amplifier multicoupler (FDUAMCO) . . . . . . . . . . . . . . 414.4.3 MFDUAMCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424.4.4 Hybrid extension module for MFDUAMCO (HYBRID4) . . . . . . . . . . . . . 434.4.5 Multiple duplexer (MDUX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434.4.6 Hybrid extension module for MDUX (HYBRID6) . . . . . . . . . . . . . . . . . . 444.4.7 Co-amplifier multicoupler (COAMCO8) . . . . . . . . . . . . . . . . . . . . . . . . . 454.4.8 Dual integrated amplifier multicoupler (DIAMCO) . . . . . . . . . . . . . . . . . 454.4.9 Mast head amplifier / tower mounted amplifier (MHA/TMA) . . . . . . . . . 464.4.10 Filter combiner with six TNFs (FICOM6) . . . . . . . . . . . . . . . . . . . . . . . . 484.4.11 Filter combiner (FICOM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494.4.12 High power duplexer (HPDU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494.5 Power supply modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504.5.1 AC/DC system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504.5.2 Backup battery (BATTPACK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 514.5.3 AC/DC panel (ADP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 514.5.4 DC mains supply unit (MSU:DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 524.5.5 AC mains supply unit (MSU:AC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 524.5.6 DC and battery controller (DCBCTRL). . . . . . . . . . . . . . . . . . . . . . . . . . 52

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4.5.7 DC panel (DCP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 534.5.8 DC link equipment breaker panel (DCP:LEBREAK) . . . . . . . . . . . . . . . . 534.5.9 Alarm collection terminal boards (ACTC, ACTP, ACTM) . . . . . . . . . . . . 544.6 Abis interface modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 554.6.1 Overvoltage protection and tracer (OVPT) . . . . . . . . . . . . . . . . . . . . . . . 554.6.2 Abis connection (ABISCON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 564.6.3 Ethernet connector module (ETHCON) . . . . . . . . . . . . . . . . . . . . . . . . . 564.7 Overvoltage protection of external alarms (OPEXAL) . . . . . . . . . . . . . . 584.8 Abis link equipment (LE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 584.9 Membrane filter (MEF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 584.10 Fan unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 594.11 Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 594.12 Smoke detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

5 Antenna combining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625.1 MFDUAMCO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 635.2 FDUAMCO / DUAMCO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 685.2.1 DUAMCO specials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 715.2.2 FDUAMCO specials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 735.3 MDUX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 755.4 COAMCO8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 805.5 DIAMCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 835.6 Antenna line equipment MHA/TMA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 865.7 FICOM6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 905.8 FICOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 955.9 HPDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 975.10 Diplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

6 Cell configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

7 FCC issues (for U.S. market only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

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List of figuresFigure 1 BS-240 II base rack (indoor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Figure 2 BS-241 II base shelter (outdoor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 3 Block diagram of a BS-240 II / 241 II (configuration example). . . . . . . . 17Figure 4 BS-240 II indoor: base rack and two extension racks . . . . . . . . . . . . . . 20Figure 5 BS-240 II B indoor: base rack and two extension racks . . . . . . . . . . . . 21Figure 6 BS-241 II outdoor: base shelter and two extension shelters . . . . . . . . . 22Figure 7 BS-241 II B outdoor: base shelter and two extension shelters . . . . . . . 24Figure 8 Connection of core modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Figure 9 Example of a configuration with COBA4P12 and COREXT . . . . . . . . . 35Figure 10 FlexCU – double TRX mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Figure 11 FlexCU – single TRX mode – fourfold receive diversity mode. . . . . . . . 40Figure 12 ABISCON and OVPT (100/120 Ω ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Figure 13 MFDUAMCO block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65Figure 14 HYBRID4 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Figure 15 DUAMCO 2:2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71Figure 16 DUAMCO 4:2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Figure 17 DUAMCO 8:2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Figure 18 FDUAMCO block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74Figure 19 MDUX block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Figure 20 HYBRID6 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77Figure 21 MDUX-HYBRID6 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78Figure 22 COAMCO8 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80Figure 23 COAMCO8 with FDUAMCO in 4:2 Mode (= 8:2 Mode). . . . . . . . . . . . . 81Figure 24 COAMCO8 with MFDUAMCO and HYBRID4 (8/0/0) . . . . . . . . . . . . . . 82Figure 25 DIAMCO block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84Figure 26 TMA (single) block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87Figure 27 MHA / TMA (dual) block diagram (RET only at MHA) . . . . . . . . . . . . . . 87Figure 28 FICOM6 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93Figure 29 FICOM 8:1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96Figure 30 HPDU 8 TRXs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97Figure 31 HPDU 8 TRXs with DUBIAS and TMA . . . . . . . . . . . . . . . . . . . . . . . . . 97Figure 32 Configuration with diplexer (example) . . . . . . . . . . . . . . . . . . . . . . . . . . 98Figure 33 Multi-cell (3,3,2): with 3 DUAMCO 4:2 . . . . . . . . . . . . . . . . . . . . . . . . . . 99Figure 34 Multi-cell (3,3,2): with 2 DUAMCO 4:2 and 1 DUAMCO 2:2 . . . . . . . . 100Figure 35 Single-cell (8,0,0): with FICOM and DIAMCO . . . . . . . . . . . . . . . . . . . 100Figure 36 Single-cell (8,0,0): with 2 DUAMCO 4:2. . . . . . . . . . . . . . . . . . . . . . . . 101Figure 37 Multi-cell (2,2,2): with 3 DUAMCO 2:2 . . . . . . . . . . . . . . . . . . . . . . . . . 101Figure 38 FDUAMCO configuration 2:2 or 4:2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 102Figure 39 Configuration 8:2 with FDUAMCO and COAMCO8. . . . . . . . . . . . . . . 102Figure 40 Single-cell (11...16,0,0): FICOMs, DIAMCOs and HPDUs in two racks 103

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List of tablesTable 1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Table 2 GSM frequency bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Table 3 Possible BS-241 II / 241 II B shelter configurations . . . . . . . . . . . . . . . . 23Table 4 Main units and modules (overview) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Table 5 Core configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Table 6 Carrier unit output power level (typical and guaranteed values) . . . . . . 40Table 7 Possible TMA substitutions with MHA . . . . . . . . . . . . . . . . . . . . . . . . . . 46Table 8 FICOM6 and FDUAMCO: Insertion losses – comparison . . . . . . . . . . . 48Table 9 Standard and optional MEF filter sizes for BS-241 II / 241 II B shelter types

58Table 10 Overview of heater types depending on shelter type and power supply 60Table 11 MFDUAMCO: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Table 12 MFDUAMCO: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Table 13 DUAMCO: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69Table 14 FDUAMCO: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69Table 15 DUAMCO: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Table 16 FDUAMCO: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Table 17 MDUX: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Table 18 MDUX: Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Table 19 DIAMCO: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Table 20 MHA: electrical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88Table 21 MHA: mechanical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88Table 22 TMA: electrical parameters (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . 89Table 23 TMA: mechanical parameters (guaranteed) . . . . . . . . . . . . . . . . . . . . . 89Table 24 FICOM6: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Table 25 FICOM6: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Table 26 FICOM: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96Table 27 HPDU: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98Table 28 Power reduction of the carrier units (ECU/FlexCU 850) at antenna port .

104Table 29 Power reduction of the carrier units (ECU/FlexCU 1900) at antenna port

105

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Reason for update

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Reason for updateIssue history

Issue 11, release independent, starting from release BR8.0

Technical data (2)

– Technical data addition of new rack architecture (BS-240 II B)

Rack/shelter configuration (3.1)

– New base and extension rack SH:BS80-2BV1 for BS-240 II B

Issue Date Summary

Issue history for this document with order number A30808-X3247-M022-*-7618

01 01/2005 New manual for new release BR8.0

02 04/2005 New issue



05 03/2006 Revision to harmonize the descriptions of BTS-TEDs

Issue history for this document with new order number A50016-G5100-A022-*-7618

01 11/2006 Expansion of the manual due to new 900/1900 MHZ dual band configuration and revised chapters for BR8.0

02 12/2006 Expansion of the manual due to new release BR9.0

03 04/2007 Expansion of the manual due to new hardware (RSCU, COREXT-R, OVPTEXT) in chapters 1 and 3

Revised/new tables (gains, losses, other parameter) in chapter 4

04 07/2007 Expansion due to new combining hardware for BR8.0

05 12/2007 Expansion due to new hardware MDUX and HYBRID6 for BR9.0

06 02/2008 Expansion of the manual due to new hardware (FICOM6) and minor changes

07 07/2008 Expansion of the manual due to new release BR10.0

08 11/2008 Additions related to new modules CESCOBA and ETHCON; additions related to new shelter types BS-241 II B (new shelter types and new MEF size); editorial changes

09 12/2008 Additions of technical data of BS-241 II B

10 03/2009 Expansion of the manual due to new antenna line equipment MHA and minor changes

11 07/2009 Additions related to new rack design BS-240 II B; update of core redundancy description; update of FICOM6 description

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Reason for update

Core modules (4.2)

– Update of core redundancy description

Antenna combining modules (4.4)

– Update of FICOM6 description

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Introduction

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1 Introduction

1.1 GeneralThis manual is applicable for the releases BR8.0, BR9.0 and higher.

The architecture of the BS-240 II / 241 II / 241 II B provides maximum flexibility to develop highest capacity BTSs with reduced volume per TRX and an expanded number of 48 TRXs in three racks.

The maximum number of managed TRXs by the BSC is 48 at one site. One site is represented by a BTSM object.

The BS-240 II / 241 II / 241 II B is an evolution of the BS-240/241 product line and represents the mainline of the base stations. The modifications represent the latest state of technology while maintaining the outstanding RF performance and conserving backward compatibility with existing base station systems. The modular design principle with a low number of different modules ensures easy installation, commissioning and operating, as well as low training costs and mainte-nance expenses with a minimal spare parts pool required. The advanced technology guarantees low operational costs and an optimum economy of scale. Homogeneous service throughout the network is assured by common BTS software running on all plat-forms.

The modular architecture and the flexible internal structure enable the BS-240 II / 241 II / 241 II B to provide new GSM features such as enhanced data rates for GSM evolution (EDGE). This platform ensures that network evolution is as smooth as possible.

Any operation for rack extension or TRX substitution does not involve service interrup-tion. Also, software-driven redundancy for core, power supply, and broadcast channel modules offer highest reliability end enable hot swapping of modules without service interruption.

The provision of a full spectrum of combining equipment allows high power and a mini-mized number of antennas in connection with a high receiver sensitivity.

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Introduction

1.2 Overview of the functionality - main features of BS-240 II / 241 II / 241 II B • Casing variants:

– Indoor version: BS-240 II– Outdoor version: BS-241 II / 241 II B,

also available for high corrosion resistance requirements

• Minimum configuration: – DC-supplied BS-240 II / 241 II / 241 II B: one base rack/shelter– AC-supplied BS-240 II / 241 II / 241 II B: one base and one service1A rack/shel-

ter or service1B shelter, respectively.

• Maximum configuration:– 3 racks/shelters with an entire quantity of 48 carriers (1 base and 2 extension) – 4 service racks/shelters housing power supply modules, battery backup and link

equipment (1 service1A and 3 service2 racks/shelters)

• Cell configurations:– Up to 6 cells per rack– Up to 12 cells per BS-240 II / 241 II / 241 II B– Concentric omnicell: one cell with inner and complete supply area– Concentric multicells: multicell with several sectors plus inner supply area

• Frequency configurations:– Single band (GSM 850, GSM 900, GSM 1800 and GSM 1900)– Dual band (see below) – Mixed cell configuration to enlarge GSM 900 cells with GSM 1800 frequencies,

or GSM 850 cells with GSM 1900 frequencies– Single cell– Multi cell

• Dual band configurations:– GSM 900 and GSM 1800– GSM 900 and GSM 1900 – GSM 850 and GSM 1900

• Frequency hopping:– Synthesizer frequency hopping– Baseband frequency hopping

• Combining options:– Antenna combining with duplexers ((MF/F)DUAMCO and COAMCO) for up to

8 carriers with RF amplifier and multicoupler for the RX path; from BR9.0 on also MDUX is available

– Antenna combining for the TX path with filter combiners (FICOM) for up to 8 carriers per antenna

– Antenna combining for the RX path with amplifying multicouplers (DIAMCO) for up to 24 carriers

– Duplexing of RX and TX path with high power duplexer (HPDU)

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Introduction

Id:0900d80580543886

– Mixed configurations of cells/sectors applying all types of carrier units: normal carrier units (CU and GCU), EDGE carrier units (ECU), and flexible carrier units (FlexCU)

• Traffic channels:– Full rate (FR)– Half rate (HR)– Enhanced full rate (EFR)– Adaptive multi rate codec (AMR)

• Services:– GPRS– HSCSD– EDGE

• Redundancy:– Support of 1:1 core redundancy– Support of BCCH redundancy– Support of TRX redundancy without using any second frequency

(from BR10 on)– Support of n+1 power supply redundancy

• Abis-interface configurations:– Star, cross connect, loop, and multidrop configurations are possible– Change of PCM line configuration from star to multidrop or loop and vice versa

is possible without any interruption of service

• External Abis link media can be connected via E1/T1:– Wire– Fiber optic – Microwave

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Technical data

2 Technical data

Characteristics BS-240 II (indoor)

BS-240 II B (indoor)

BS-241 II (outdoor)

BS-241 II B (outdoor)

Type of casing Rack Rack Shelter Shelter

Dimensions rack/shelter (H x W x D)

1600 mm x 600 mm x 450 mm(5’3” x 2’ x 1’5”)

1530 mm x 600 mm x 450 mm(4’11” x 2’ x 1’5”)

1750 mm x 700 mm x 650 mm(5’8” x 2’3” x 2’2”) incl. plinth

base/extension shelter: 1650 mm x 700 mm x 650 mm(5’5” x 2’3” x 2’2”)

service1B shelter: 1750 mm x 700 mm x 750 mm(5’8” x 2’3” x 2’5”)

Volume net 432 liters 413 liters 705 liters796 liters incl. plinth

base/extension shelter: ca.750 liters

service1B shelter: ca.918 liters

Max. TRX per BTS (in more than one rack)

24 (48 with FlexCUs)




Max. TRX per cell (in more than one rack)

24 24 24 24

Max. TRX per site managed by BSC. Site is represented by BTSM object.

48 48 48 48

Typical power consumption base rack

1295 W with CU1845 W with ECU2420 W with 8 FlexCU




Typical power consumption extension rack





Weight of base rack/shelter in typical configuration

ca. 190 kg (419 Lbs)

ca. 130 kg (287 Lbs)

ca. 240 kg (529 Lbs)

ca. 280 kg (617 Lbs)

Weight of extension rack/shelter in typical configuration

ca. 190 kg (419 Lbs)

ca. 130 kg (287 Lbs)

ca. 240 kg (529 Lbs)

ca. 280 kg (617 Lbs)

Table 1 Technical data

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Technical data

Id:0900d80580543888

Weight of service1A rack/shelter in configu-ration:AC/DC; F:Battery 1x (type A400/85)

ca. 264 kg (582 Lbs)

ca. 314 kg (692 Lbs)

Weight of service2 rack/shelter in configu-ration:F:Battery 3x (type A400/85)

ca. 490 kg (1080 Lbs)

ca. 540 kg (1190 Lbs)

Weight of service1B shelter in configuration:AC/DC; F:Battery 1x/2x/3x

500/750/1000 kg(1101/1652/2202 Lbs)

Temperature range -5 °C to +45 °C(23 °F to +113 °F)

-5 °C to +45 °C(23 °F to +113 °F)

-33 °C to +50 °C(-27 °F to +122 °F)only with installed heater

-33 °C to +50 °C(-27 °F to +122 °F)with installed heater

Ingress protection rating

IP20 IP20 IP55 IP55

Characteristics BS-240 II (indoor)

BS-240 II B (indoor)

BS-241 II (outdoor)

BS-241 II B (outdoor)

Table 1 Technical data (Cont.)

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Technical data

GSM frequency-Band Uplink (MHz) Downlink (MHz)

GSM 850 824 - 849 869 - 894

P-GSM 900 (Primary GSM) 890 - 915 935 - 960

E-GSM 900 (Extended GSM) 880 - 915 925 - 960

R-GSM 900 (Railway GSM) 876 - 915 921 - 960

GSM-RE 900 (GSM Railway Extension) 876 - 901 921 - 946

GSM-PS 900 (P-GSM Shifted to E-GSM) 880 - 905 925 - 950

GSM 1800 1710 - 1785 1805 - 1880

GSM 1900 1850 - 1910 1930 - 1990

Table 2 GSM frequency bands

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Hardware architecture

Id:0900d80580543884

3 Hardware architectureThe BS-240 II / 240 II B / 241 II / 241 II B is designed to achieve commonality of boards to serve GSM 850, GSM 900 (with frequency variants), GSM 1800 and GSM1900.

Figure 1 shows the indoor base rack.

Figure 2 shows the outdoor base shelter.

Figure 3 shows the BTS functional blocks of the BS-240 II 240 II B / 241 II / 241 II B.

Figure 1 BS-240 II base rack (indoor)

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Figure 2 BS-241 II base shelter (outdoor)

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Id:0900d80580543884

Figure 3 Block diagram of a BS-240 II / 241 II (configuration example)

Base Rack

Service Rack

ACTM

CC-Links

FICOM

DIAMCO

HPDU

4TX

RX

RXDIV

4TX

RX

RXDIV

ACTC ACTP

LE 0 LE 1

BATTERY

TMA

DCBCTRL

ACTC

FAN

Cell 0

Cell 1

FICOM

DIAMCO

4TX

4TX

RX

RXDIV

Cell 1

RX

RXDIV

RX

RXDIV

ACTC ACTP

FAN

to next ext. rack

RXCA1RXCA0

AC/DC

DCP

DCP

DCP

Extension Rack

Cascading

DUBIAS

COBA

2 PCM

Ext. Sync.

2 PCM

4 PCM

Abis

Sync.

Abis

TMA

FAN

TMA

TMA

OVPT

OVPT

OASI

COSA

(e.g.

(e.g.

carrier units(e.g. FlexCU)


CAN Bus

0 .. 3

4 .. 7


4 .. 7


0 .. 3COBA4P12)

COSA4P12)

MFDUAMCO

duplexer,e.g.

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The architecture of BS-240 II / 240 II B / 241 II / 241 II B provides maximum flexibility to develop large and small BTSs.

The main communication between the modules is provided by means of bi-directional serial links (CC-Links) between the carrier units and the core modules. These CC-links handle the entire communication between BTS core and carrier units. Baseband fre-quency hopping is also supported.

All alarms, besides the alarms generated in the COBA and in the CUs, are transported via the CAN bus. Alarms of the CUs are transmitted via CC-link.

The CU provides all analog and digital signal processing including an RF power stage which is necessary to process a single carrier (e.g. GSM 8 TCHs). The carrier unit(s) connect the combining equipment on the one side and the core modules on the other. The core modules provide functions common to all carriers within the BTS (e.g. clock generation, O&M processing,...) as well as LAPD processing for the carriers.

Legend:

AC/DCACPACTCACTMACTP

CANCOBACOSADCBCTRLDCPDIAMCOMFDUAMCOMHADUBIASFlexCUFICOMHPDULEOASIOVPTTMA

AC/DC rectifierAC panelalarm collection terminal connection alarm collection terminal master for base rack/shelter (optional)alarm collection terminal processor for extension and service rack/shelter controller area networkcore basiscore satelliteDC and battery controllerDC panelDI(2) amplifier multicouplermulti-standard flexible duplex amplifier multicouplermast head amplifierduplexer BIAS pathflexible carrier unitfilter combinerhigh power duplexerlink equipmentoperator available serial interfaceover voltage protectiontower mounted amplifier

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Id:0900d80580543884

3.1 Rack/shelter configurationThe BS-240 II / 240 II B / 241 II / 241 II B family, with eigth transceiver units per rack/shelter, is expandable up to 24 transceivers (48 with FlexCU) in three racks/shel-ters and can be supplied in two versions:

– a BS-240 II / 240 II B for indoor installation – a BS-241 II / 241 II B for outdoor installation

Five different types of rack/shelter exist:– Base rack/shelter (with core modules)– Extension rack/shelter (for more than eight carrier units)– Service1A rack/shelter (with AC/DC modules)– Service2 rack/shelter (for LE and batteries)– Service1B shelter (for AC/DC modules and batteries)

It is possible to connect one base rack/shelter with up to two extension racks/shelters, which realizes the performance of a 24 TRX BTS, as shown in: – Figure 4 and Figure 5 for indoor installation – Figure 6 and Figure 7 for outdoor installation

The base and extension racks/shelters can be located physically in any order next to each other.

The service rack/shelter permits various applications depending on the number of carrier units configured and/or the number and the kind of network termination equip-ment provided and the battery backup time required. On the digital side, there is an extension of the CC-links (connection between core back-plane and the carrier units is not housed in the base rack) and the CAN bus.

AC power supply by Eltek rack A DC-supplied BTS can also be powered by an Eltek power supply rack. The Eltek power supply rack is applicable for indoor use.

For more information, ask your sales representative.

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Figure 4 BS-240 II indoor: base rack and two extension racks

Rack architecture BS-240 II BA new rack type R:BS80-2BVx as base and extension racks (BS-240 II B) replaces all rack types R:BS80-2Vx for new orders of base or extension racks.

The height of this new rack type is reduced by 100 mm due to a new frame configuration (double subrack) along with reduced fan units. Sufficient air flow is secured with an enlarged lower air inlet by 20 mm. The rack type R:BS80-2Vx is built with one double subrack and one single subrack.

All cable connections between BS-240 II B base and extension racks pass the top of the rack. The rack R:BS80-2BVx does not provide an internal cable duct between two racks.

ACOM

0

ACOM

1

ACOM

2

ACOM

3

DC-PANELACT-C

CU

2

CU

3

CU

6

CU

7

MU

CO

0

MU

CO

1

CU 0

CU 1

CU 4

CU 5

BS-240 II

ACOM

0

ACOM

1

ACOM

2

ACOM

3

CU

2

CU

3

CU

6

CU

7

MU

CO

0

MU

CO

1

CU

0

CU

1

CU

4

CU

5

BS-240 II

CO

BA

0C

OS

A 0

CO

BA

1C

OS

A1

FAN 0 FAN 1

ACOM

0

ACOM

1

ACOM

2

ACOM

3

DC-PANELACT-C

CU

2

CU

3

CU

6

CU

7

MU

CO

0

MU

CO

1

CU 0

CU 1

CU 4

CU 5

BS-240 II

FAN 0 FAN 1

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3

FAN 4 FAN 5

FAN 2 FAN 3

FAN 4 FAN 5

FAN 2 FAN 3

FAN 4 FAN 5

Legend:

ACOM antenna combining module

CU carrier unit (CU, ECU, GCU, FlexCU)

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Id:0900d80580543884

All CC-link cables and CANBUS cables are routed via EMI-panels of the racks. The EMI panel is an incorporated part of the R:BS120-2BVx rack. It is built with two double sub-racks.

The number of slots for CU, ACOM and core modules remains unchanged. The new slot numbering is shown in Figure 5 BS-240 II B indoor: base rack and two extension racks.

g BS-240 II B base and extension racks do not support the installation of DIAMCO units or HPDU units.

g ACOM slot #4 is not SW supported.

Figure 5 BS-240 II B indoor: base rack and two extension racks

Shelter for standard applications and for industrial/coastal areasThe standard shelter SH:BS81SV7 out of V2A* stainless steel is sufficient for most appli-cations.

ACOM

0

ACOM

1

ACOM

2

ACOM

3

DC-PANELACT-C

CU

4

CU

5

CU

6

CU

7

CU 0

CU 1

CU 2

CU 3

BS-240 II B

ACOM

0

ACOM

1

ACOM

2

ACOM

3

CU

4

CU

5

CU

6

CU

7

CU

0

CU

1

CU

2

CU

3

BS-240 II B

CO

BA

0C

OS

A 0

CO

BA

1C

OS

A1

FAN 0 FAN 1

ACOM

0

ACOM

1

ACOM

2

ACOM

3

DC-PANELACT-C

CU

4

CU

5

CU

6

CU

7

CU 0

CU 1

CU 2

CU 3

BS-240 II B

FAN 0 FAN 1

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3 FAN 2 FAN 3 FAN 2 FAN 3

ACOM

4

ACOM

4

ACOM

4

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A shelter (SH:BS81SV6) specially designed for very high corrosion resistance require-ments is optionally available. It includes high resistance against chlorides, especially for industrial areas and coastal areas with less than 1600 m distance to the sea, made of V4A* stainless steel.

Figure 6 BS-241 II outdoor: base shelter and two extension shelters

CU

2

CU

3

CU

6

CU

7

MU

CO

0

MU

CO

1

CU

0

CU

1

CU

4

CU

5

BS-241 II

CO

BA

0C

OS

A 0

CO

BA

1C

OS

A1

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3

FAN 4 FAN 5

ACOM

0

ACOM

1

ACOM

2

ACOM

3

CU

2

CU

3

CU

6

CU

7

MU

CO

0

MU

CO

1

CU

0

CU

1

CU

4

CU

5

BS-241 II

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3

FAN 4 FAN 5

ACOM

0

ACOM

1

ACOM

2

ACOM

3

CU

2

CU

3

CU

6

CU

7

MU

CO

0

MU

CO

1

CU

0

CU

1

CU

4

CU

5

BS-241 II

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3

FAN 4 FAN 5

ACOM

0

ACOM

1

ACOM

2

ACOM

3

Legend:

ACOM antenna combining module

CU carrier unit (CU, ECU, GCU, FlexCU)

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Id:0900d80580543884

Shelter architecture BS-241 II B A new shelter type SH:BS81SV8 as base and extension shelter (BS-241 II B) replaces all shelter types SH:BS81SV1-7 for new orders. It is made out of aluminum with high cor-rosion resistance.

The size of shelter types SH:BS81SV1-7 is identical. The height of shelter type SH:BS81SV8 is reduced by 100 mm due to a new frame configuration (double subrack) along with reduced fan units. The intershelter connection at the side of the shelter is dropped out, cables are routed through the plinth.

The number of slots for CU, ACOM and core modules remains unchanged, but the slot numbering has changed. The new slot numbering is shown in Figure 7 BS-241 II B outdoor: base shelter and two extension shelters.

g BS-241 II B base and extension shelters do not support the installation of DIAMCO units or HPDU units.

g ACOM slot #4 is not SW supported.

The new service1B shelter (BS-241 II B) SH:BS81S1AV1 made out of V2A* steel replaces the current service1A shelter. Its depth is increased by 100 mm due to the support of larger 23 inch batteries.

See Table 3 for an overview of possible shelter configurations depending on power supply and outdoor conditions.

* V2A: high quality stainless steel; V4A: high quality stainless steel with high corrosion resistance against chlorides and sea water.

Table 9 in chapter 4.9 Membrane filter (MEF) gives an overview of standard and optional MEF filter sizes for each shelter type.

g If ambient temperatures of about -14°C or below occur and the door of a base or extension shelter is opened in operation, the system units of the shelter may be switched off from DC supply with utmost probability due to cold air stream to the external temperature sensor of TMB.

Outdoor site conditions

BS-241 II BS-241 II B

base/extension service1A base/extension service1B

SH:BS81SV6

SH:BS81SV7

SH:BS81SV6

SH:BS81SV7

SH:BS81SV8

SH:BS81S1AV1

V4A* V2A* V4A* V2A* aluminum V2A*

normal corrosion - x - x x x

high corrosion x - x - x x

AC power supply on site x x x x x x

DC power supply on site

x(MSU nec.)

x(MSU nec.) - - x -

Table 3 Possible BS-241 II / 241 II B shelter configurations

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CompatibilityFor sites with AC power supply, BS-241 II base/extension shelters are only compatible with BS-241 II service1A shelter. BS-241 II B base/extension shelters are only compat-ible with BS-241 II B service1B shelter.

For sites with DC power supply, BS-241 II base/extension shelters are also compatible with BS-241 II B service1B shelter and BS-241 II B base/extension shelters are also compatible with BS-241 II service1A shelter.

Figure 7 BS-241 II B outdoor: base shelter and two extension shelters

3.2 Special arrangements BS-241 II / 241 II B - DC The base and extension shelters of these BTS versions are externally DC-supplied by BS-241 II S1B service shelter or 3rd party equipment.

CU

0

CU

1

CU

2

CU

3

CU

4

CU

5

CU

6

CU

7

BS-241 II B

CO

BA

0C

OS

A 0

CO

BA

1C

OS

A1

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3

ACOM

0

ACOM

1

ACOM

2

ACOM

3

CU

0

CU

1

CU

2

CU

3

CU

4

CU

5

CU

6

CU

7

BS-241 II B

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3

ACOM

0

ACOM

1

ACOM

2

ACOM

3

CU

0

CU

1

CU

2

CU

3

CU

4

CU

5

CU

6

CU

7

BS-241 II B

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3

ACOM

0

ACOM

1

ACOM

2

ACOM

3

ACOM

4

ACOM

4

ACOM

4

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BS-241 II / 241 II B with acoustic hoodThe acoustic hood (AIRSHEXT) is an optional hardware module and may be installed only on outdoor variants of the BTS.

An acoustic hood decreases the noise level that may arise by using the powerful FlexCUs. It contains of a 3-side-closed shelter with an inside mat. The airflow is ensured by the open lower side of the hood.

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Module description

4 Module description

4.1 Overview

Name/Type F-V1) Remarks

Core modules: COBA COSACOREXT

M:COBA2P8VxM:COBA4P12VxM:CESCOBAVxM:COSA6P16M:COSA4P12VxM:COREXTVx

No Core basis, core satellite, and core link extension modules (the last two modules increase the number of PCM lines and CC-links) can be equipped only in the base rack/shelter. They provide up to 8 PCM lines.

CU CUGVxCUDVxCUPVx

Yes Carrier units receive and convert RF signals into TRAU frames/signaling data (for uplink) and vice versa (for downlink).

The carrier units can be equipped in the base and extension racks/shelters. All types may be mixed.

GCU GCUGVxGCUDVx

Yes

ECU ECU850HPVxECU850VxECUGVxECUDVx, ECUDHPVxECUPVx, ECUPHPVx

Yes

FlexCU FCU850VxFCUGVxFCUDVxFCUPVx

Yes

Table 4 Main units and modules (overview)

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Module description

Id:0900d805805712d1

DUAMCOFDUAMCOMFDUAMCOHYBRID4MDUXHYBRID6COAMCO8FICOM6FICOMDIAMCOHPDU

DUAMCO2xDUAMCO4xDUAMCO8xFDUAMCO (x:2 mode)MFDUAMCO850VxMFDUAMCOEGVxMFDUAMCOPGVxMFDUAMCOPS5VxMFDUAMCOREVxMFDUAMCODVxMFDUAMCOPVxHYBRID4G8VxHYBRID4DPVxMDUXDVx MDUXEGVxMDUXPGVxHYBRID6DPVxHYBRID6G8VxCOAMCO8DPVx COAMCO8G8Vx FICOM6EGVxFICOM6DVxFICOMxDIAMCOxHPDUx

Yes Antenna system modules can be equipped in the base and extension racks/shelters.

The MFDUAMCO is the successor of the FDUAMCO. The hybrid extensions are available for 850/900 MHz and for 1800/1900 MHz.

MDUX and HYBRID6 are available from BR9.0 onward.

FICOM6 is the successor of FICOM and available from BR10 onward.

TMA TMAxSTMAxDTMAx

Yes Optional module that connects the antenna with the BTS in order to amplify the receive signal and pass through the transmit signal. Different TMAs are avail-able for different transmit frequencies.

MHA MDTA850VxMDGA900VxMDDA1800VxMDPA1900Vx

Yes Mast head amplifiers are optional modules that connect the antenna with the BTS in order to amplify the receive signal. MDxA are feasible only with BTS versions with MFDUAMCO from BR9 onward or with FICOM6 from BR10 onward. Different MHAs exist for different fre-quency bands.

OVPTABISCON

M:OVPTVxM:OVPTKOAXVxM:ABISCONVxM:ABISCONCXVx

No The overvoltage protection and tracer and the Abis con-nection modules are optional modules and can be installed alternatively. It:– can be equipped in the base rack/shelter– supports 100 Ω /120 Ω balanced line or 75 Ω

coaxial line

ETHCON ETHCONVx No The Ethernet connector module is necessary to support the CESoPSN functionality in combination with a CESCOBA.


Table 4 Main units and modules (overview) (Cont.)

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Module description

LE ---- No The Abis link equipment is an optional customer-supplied module and acts as the front end to provide the Abis interface in service1A and service2 racks/shelters.

AC/DC system AC/DCVx No AC/DC rectifier used for AC power (can be equipped in the service1A rack/shelter).

DC and battery controller

M:DCBCTRLVx No Supervision of the AC/DC converter and of the con-nected battery systems (in service1A and service2 racks/shelters).

Battery BATTPACKVxBATTPACK_23Vx

No Up to two battery systems can be equipped in the service1A rack/shelter and up to three in the service2 rack/shelter.

DCP DCP:R-2xxxVxDCP:RSH-2Vx

No The DC panel is used for distribution of –48 V DC.

ADP ADPAVxADPA/UVxADP-2Vx

No The ADP connects the BTS to the AC supply line; it must be installed in the service1A rack/shelter.

LE breaker panel DCP:LEBREAKVxDCP:LEBREAK2Vx

No The LE breaker panel provides the distribution of the –48 V DC supply voltage to the modules within the service rack/shelter.

EMI panel EMI-P:SH2xxxVxEMI-P:SH-2xxxDCVxEMI-P:SH-2BDVxEMI-P:SH-2BVxEMI-P:SH-2EVxEMI-P:SH-2S1Vx

No One EMI panel EMI-P:SH-2BV3 is required for BS-241 II B base shelter, one EMI panel EMI-P:SH-2EV3 is required for BS-241 II B extension shelter.

ACTCACTPACTM

ACTC-yVxACTPVxACTMVxACTM24VxM:ACTCyVxM:ACTCSVxM:ACTPVx

No Alarm collection modules: – ACTC is equipped in each rack/shelter

(e.g. ACTC-3V1)– ACTM can be equipped in the base rack/shelter – ACTP is equipped in each extension and service

rack/shelter

MSU AC MSU:AC3PH-2VxMSU:3PHNLPVxMSU:AC3PHVxMSU:AC2PH80UVx

No Mains Supply Unit (AC)

MSU DC MSU:DC80A-2VxMSU:LPDC80-2VxMSU:DC80AVxMSU:DCVxMSU:DC120A-2VxMSU:100ADCVx

No Mains Supply Unit (DC) and upgrade kit for lightning protection



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Module description

Id:0900d805805712d1

OPEXAL MK:OPEXALVx No Optional lightning protection module for the ACTM alarm input lines.

Fan FANVxFAN-NIVx

No Fan units are mandatory for each rack/shelter.

Heater HEATER-2VxHEATER-2DCVx

No Optional unit for outdoor installation.

Dust filter DUSTFILM-2Vx No Module for indoor for cleaning the cooling air

Membrane filter MEF35VxMEF65VxMEF150V5MEFVx

No Mandatory for all outdoor installations for cleaning the cooling air.

Smoke detector MK:SMOKEVx No Optional module for outdoor for each shelter.

Rack/shelter R:BS80-2BVxR:BS80-2VxSH:BS81SVxSH:BS81S1AVx

No Several types for indoor racks and outdoor shelters exist. For different conditions, see Shelter for standard applications and for industrial/coastal areas.

Frames F:AC/DCAVxF:AC/DCDVxF:ACOMVxF:ACTC-2VxF:BATTRAYBV3F:BATTRAYVxF:CORECUVxF:CUVxF:DSR-ACUVxF:DSR-ACURVxF:DSR-BVxF:DSR-BRVxF:DSRVxF:SSRVxF:FAN-2VxF:NTVxF:RXCUVx

No Each frame is necessary for installing the equipment.

Cover parts CP:ACDCAVxCP:ACDCDVxCP:ACOMVxCP:ACTVxCP:AIRINLETVxCP:COSA/COBAVxCP:CUVxCP:DIAMCOVxCP:EMI-SHSFVxCP:20MMBFVx

No Cover parts close the unequipped slots to ensure the airflow inside the rack. Cover parts are absolutely man-datory to force the air flow through the modules plugged and avoid bypassing.



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Mounting kits MK:AIRBRVxMK:AIRBSHFVxMK:AIRGUIDEVxMK:AIRSHEXTVxMK:BATTERYVxMK:BATTPACKVxMK:BUSVxMK:CAR-2xxxVxMK:CASH-2xxxVxMK:COREXTB/EVxMK:EAPB-BOXRV1MK:EQ4RVxMK:EMCR-2VxMK:EMCIPSHVxMK:ETHCONSHVxMK:FOCVxMK:HPDUSHVxMK:HPDUADVxMK:HPDURVxMK:LE6R-2VxMK:NO-DISVx MK:OPEXALVxMK:TMBVx

No There are some mounting kits for cabling and installa-tion inside and outside the racks, e.g for: – air duct – rack cabling – cabling for inter site synchronization (optional) – earth quake equipment – prevention of battery deep discharge

1) "Yes" indicates that the module has variants for different frequencies.



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4.2 Core modulesCore modules include COBA board, COSA board and COREXT board.

The core modules have the following tasks inside of the BTS: • local controlling of the entire BTS • generation of system clocks • providing of up to 8 Abis interfaces (PCM30/24) to BSC or other BTSs • providing of up to 24 CU interfaces • providing interfaces to internal and external alarms • providing an interface to the LMT/OMT • providing an interface for external clock synchronization • handling and processing of O&M messages

Core redundancy is supported (see Core redundancy).

Three types of core modules exist:1. COBA2P8, COSA6P162. COBA4P12, COSA4P12, COREXT3. CESCOBA (from BR10 onward)

A mix of COBA2P8/COSA6P16 with COBA4P12/COSA4P12/COREXT or with CESCOBA, e.g. COBA4P12 and COSA6P16, is not allowed. A mix of CESCOBA with COSA4P12/COREXT is possible for certain combinations. See Table 5 for the all possible configurations for CESCOBA with COSA4P12/COREXT.

In case of CESCOBA configuration, an ETHCON is always necessary.

Combination of core modules

Abis lines

CU inter-faces

Abis cross-

connect

CU slots 0…7 *

Base cabinet

CU slots 0…3 *

first Ext. cabinet

CU slots 0…7 *

Ext. cabinets

Core redun-dancy

COBA2P8 2 8 yes

COBA2P8 + COSA6P16 8 24 yes yes yes yes

2 COBA2P8 2 8 yes yes

2 COBA2P8 + 2 COSA6P16 8 24 yes yes yes yes yes

COBA4P12 2 8 yes

COBA4P12 + COREXT 4 12 yes yes yes

COBA4P12 + COSA4P12 8 24 yes yes yes yes

2 COBA4P12 2 8 yes yes

2 COBA4P12 + 2 COREXT 4 12 yes yes yes yes

2 COBA4P12 + 2 COSA4P12 8 24 yes yes yes yes yes

CESCOBA 0 8 yes** yes

CESCOBA + COREXT 0 12 yes** yes yes

CESCOBA + COSA4P12 4 24 yes** yes yes yes

2 CESCOBA 0 8 yes** yes yes

2 CESCOBA + 2 COREXT 0 12 yes** yes yes yes

2 CESCOBA + 2 COSA4P12 4 24 yes** yes yes yes yes

Table 5 Core configurations

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Core boards have a common backplane. The connection of the core modules with the OVPT/Abis interface and the carrier units is done by cables, which are plugged into the backplane.

Figure 8 Connection of core modules

Hot plug-in: A hot plug-in of COBA and COSA is possible. This means that these boards can be plugged in/out with voltage switched on without disturbing other HW inside the rack/shelter (no loss of data on other boards) and without destroying other boards.

After the plug-in of a core board, this board is in "reset" state and all bus drivers of external busses are in tri-state. These drivers will not be enabled before initialization of the devices, which serve the external busses.

*) CU Slots supported by the core equipment

**) via IP connections only

Combination of core modules

Abis lines

CU inter-faces

Abis cross-

connect

CU slots 0…7 *

Base cabinet

CU slots 0…3 *

first Ext. cabinet

CU slots 0…7 *

Ext. cabinets

Core redun-dancy

Table 5 Core configurations (Cont.)

OVPT CU

COBA COSA COBA red. COSA red. Abis

Abis Abis Abis Abis

CC-Link CC-Linkotherinterfaces

CUs

CC-Link CC-Link

CU

Base rack Extension rack

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4.2.1 Core basis (COBA) The COBA is the central board of the core. The main components of this board are the base core controller, the advanced clock generation, the serial link interface controller that manage the external interface towards the carrier units, the PCM30/24 Abis inter-faces, the internal system alarm interface and also an interface to one COSA to expand the BTS.

The COBA has to be installed in the base rack/shelter.

Types of COBA: • M:COBA2P8Vx • M:COBA4P12Vx • M:CESCOBAVx

g Name convention for COBAs and COSAs:The first digit gives the number of Abis interfaces, the following letter gives the kind of Abis interface (e.g. P for PCM30/24), and the following number gives the number of carrier unit interfaces (CC-links). For example:COBA2P8 means 2 PCM30/24 Abis interfaces and 8 carrier unit interfaces. COBA4P12 means 4 PCM30/24 Abis interfaces and 12 carrier unit interfaces.

The base core controller maintains the software of all BTS units in FLASH-EPROMs, monitors the software download, and terminates all internal system alarms. Beside the O&M functions, the controller handles the signaling messages between the core and the carrier units (CC-link).

The ACLK generates the system specific timing signals that are distributed by the CC-link to the carrier units.

The "cross connect" feature is supported. To provide this feature, additional core modules are required:

• With COBA2P8: A COSA6P16 must be installed additionally.

• With COBA4P12: Either a COSA4P12 or a COREXT must be installed additionally.

• With CESCOBA: Either a COSA4P12 or a COREXT must be installed additionally.

The CESCOBA module (available from BR10 onward) is required if Circuit Emulation Service over Packet functionality shall be applied.

The CESCOBA is a COBA version for the BTSE family which is designed to carry TDM traffic (Abis) over a packet network without external equipment. TDM to Packet inter-working functionality is based on the Pseudo Wire emulation Edge-to-Edge mechanism (PWE3), which allows the transport of all relevant parts of a service, such as E1/T1 lines, over a packet switched network. This kind of emulation is called Circuit Emulation Service over Packet Switched Network (CESoPSN). For more information about CESoPSN functionality, see the feature description “FD10560: Internal Ethernet/IP interfaces for BSS”.

The CESCOBA must not be mixed with COBA4P12, COBA2P8 or COSA6P16.One (or two) CESCOBA module(s) can only be configured in combination with one Ethernet connector module (ETHCON).

Core redundancy is possible (see Core redundancy).

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Fault propagation through dependent modulesIf core redundancy is not installed and a failure in the COBA module occurs, the entire BTS goes out of service until the faulty COBA module is replaced.

If core redundancy is installed and a failure in the active COBA module occurs, all calls will be lost and the BTSE switches to the stand-by COBA without any further service interruption.

If the CESCOBA is configured and the ETHCON unit is faulty, the BTSE is out of oper-ation even if core redundancy is applied.

4.2.2 Core satellite (COSA) The main task of the COSA board is to increase the number of the PCM30/24 Abis inter-faces and CC-links of the COBA. A COSA in combination with a COBA make the "cross connect" functionality available.

The COSA is an optional module. It is located in the base rack/shelter.

The COSA is controlled by the COBA and receives the working-clock from the COBA.

The COBA supports up to 8 carrier units in the base rack. The COSA supports up to 16 additional carrier units in the two extension racks.

The COSA extends the configuration by up to 6 Abis ports. In the configuration with COBA and COSA, the BTS can support a maximum of 8 PCM lines and a maximum of 24 carrier units.

See Table 5 for all possible core configurations.

Types of COSA: • COSA6P16 COBA2P8 extension with 6 Abis links and 16 CC-links • COSA4P12 COBA4P12 extension with 4 Abis links and 12 CC-links

g For the naming convention, see the note at COBA description.

4.2.3 Core link extension (COREXT) The main task of the COREXT board is to increase the number of the PCM30/24 Abis interfaces and CC-links of the COBA. A COSA in combination with a COBA make the "cross connect" functionality available.

The COREXT board is an optional module and can be installed alternatively to a COSA board inside the COSA slot in the base rack/shelter.

The COREXT board connects four carrier unit ports and two Abis ports located at the COBA4P12 board via core backplane to the appropriate interfaces.

The COREXT is a passive board without a DC supply interface.

Type of COREXT: • COREXTV1: COBA4P12 or CESCOBA extension with two Abis (PCM) links and

four CC-links

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Figure 9 Example of a configuration with COBA4P12 and COREXT

4.2.4 Core redundancyTo fulfill the core redundancy aspects, a redundant COBA can be installed. In case of a serious fault to the active COBA, the redundancy algorithm switches to the passive one without requiring operator interaction.

One of the COBAs is active and one is passive. The passive one is waiting for its acti-vation in case of a failure within the active core.

Both cores (#0 and #1) have link interfaces to the Abis lines, but only one (the active core) is connected. In case of a switchover, the link is automatically switched to the new active COBA. After a redundancy switch occurs, an Abis alignment is performed in order to align the new active COBA with the BSC.

If the core consists of a combination of COBA and COSA or COBA and COREXT modules, each of these modules must be installed twice. Redundancy only covers the COBA boards. A failure of the COSA board does not initiate the redundancy switch.

Both, the active and the passive core have links to the carrier units. In reverse, each carrier unit is linked with both cores. The traffic data are transmitted transparently through the active core. Signal processing takes place only within the carrier units.

Automatic software updates on the passive COBA minimize the downtime in case of a redundancy switchover. Changes of the minimal configuration must be entered on the active and passive COBA separately and need the redundancy switch. Automatic syn-chronization of changed attributes/states via Abis alignment as well as simple object-modeling of the passive COBA takes place.

The redundancy interface is realized as a 2 Mbit/s HDLC link which provides a commu-nication interface between the two main microprocessors.

The ACLK of the active core is connected with the one on the passive core. It allows the passive ACLK to be synchronized to the active one.

Upgrade of the BTSE with Core redundancyA non-redundant BTSE can be extended with a redundant COBA performing a hardware and software upgrade. The BTSplus might require a new booter to provide

CU CU CUCU

COBA4P12

COREXT

CU CU

CU CU CU CU CU CU

2x Abis2x Abis

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redundant COBAs. After the creation and equipping of the second COBA, it will be the passive one and will be automatically aligned by the active COBA.

Initial installationInitial installation includes downloading and setting of the minimal configuration of the active COBA.

New BTSE software loadWhenever a new software version is downloaded via LMT or Abis, the passive COBA is synchronized with the same SW load after the new SW load has been activated. This guarantees that the new software version is always available. All changed attributes and states must again be aligned with the BSC during the database alignment.

Modification of HMO databaseThe BTSE database is modified via LMT and/or RC with one or more commands “cre-ate”, “set” or “delete”. The copy of the HMO database of active and passive COBA is automatically aligned.

Remote inventory dataAfter the download of new nob_RIU data via LMT, they are automatically copied to the passive COBA.

g With core redundancy, a mixed configuration with COBA2P8 and COBA4P12 in the same BTS is not allowed.

g Redundancy is implemented in a cold-standby mode, i.e., all calls will get lost if a core switchover occurs.

More information about the BTSplus Core redundancy feature is described in Equip-ment Configuration - Cross copy for core redundancy.

Fault propagation through dependent modules in case of core redundancyIf core redundancy is installed and a failure in the active COBA module occurs, all calls will be lost and the BSTE switches to the stand-by COBA without any further service interruption. This recovery action is reported within the alarm report.

An active COBA breakdown triggers an automatic restart performed on the passive COBA (flip-flog logic). Interruption time is kept to a minimum since the configuration data and software are already mirrored on the passive COBA. The recovery time is short, depending on the number of TRXs involved.

In general, the operator is informed about any alignment failures via new alarms. The active COBA is not impacted due to failures caused by the passive COBA.

After a redundancy switch, the COBA that became active, must perform a “warm reset” in order to initialize the SELIC.

g The direction of the alignment is also determined by the faster startup of one COBA. If a COBA containing consistent data is moved from one BTSE to another, an align-ment in the wrong direction is possible. It is the responsibility of the operator to ensure that the flash EPROM must be formatted and the board shall be equipped/created after the desired active COBA is in normal operation.

If the CESCOBA is configured and the ETHCON unit is faulty, the BTSE is out of oper-ation even if core redundancy is applied. Successive BTS in loop configuration is also not connected anymore because a passive bypass of the faulty BTS is not possible with

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Ethernet links due to signal quality reasons. The power supply for ETHCON is redundant in case of redundant CESCOBA units.

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4.3 Carrier related modules The carrier unit takes care of all carrier oriented tasks. In the uplink (UL) direction, two or four RF signals (diversity) are received and finally converted into TRAU frames and signaling data. In the downlink (DL) direction, TRAU frames and signaling data are received from the core and converted into a GMSK or 8PSK modulated RF signal, which is amplified to the desired power level.

Different types of carrier related modules can be used: carrier units (CUs and GCUs), EDGE carrier units (ECUs), and flexible carrier units (FlexCUs). Each carrier unit can be replaced by another one without any additional hardware change.

• An ECU is similar to a GCU but with the additional support of 8PSK modulation. It converts the signaling and traffic data into a GMSK or 8PSK modulated signal.

• A FlexCU is a complete two-carrier unit and its two TRXs can be configured inde-pendently, e.g. into different sectors; GMSK and 8PSK modulated signals are sup-ported.

CU, GCU, ECU, and FlexCU modules may be installed in any kind of mixed configura-tions.

For the typical and the guaranteed values of RF output power level, see section Carrier unit output power level.

4.3.1 Carrier units (CU) The CU is a carrier unit variant which supports GMSK modulation. There are different variants of CUs for the several frequency bands GSM 900, GSM 1800 and GSM 1900 (see also Table 6).

4.3.2 GSM carrier unit (GCU) The GCU is a carrier unit variant that supports GMSK modulation.

There are different variants of GCUs for the frequency bands GSM 900 and GSM 1800 (see also Table 6).

4.3.3 EDGE carrier unit (ECU) The ECU can support EDGE functionality in uplink and downlink. In downlink direction, the signaling and traffic data are received from the core and converted into GMSK or 8PSK modulated signals which are amplified to the desired power level. With the intro-duction of EDGE, it is possible to mix EDGE and non-EDGE timeslots on the same carrier.

Different variants of ECUs for the several frequency bands GSM 850, GSM 900, GSM 1800 and GSM 1900 exist (see also Table 6).

The mechanical design of ECU is identical to that of all other CU versions. It is therefore hardware compatible and fits into all BTS racks/shelters.

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4.3.4 Flexible carrier unit (FlexCU) The FlexCU is a complete two-carrier unit. It is based on the ECU keeping the same dimensions. Its two TRXs can be configured independently, e.g. into different sectors, and can therefore increase the system reliability. The FlexCU either acts as two independent ECUs or as one carrier unit with four receiv-ers, the so called "fourfold receive diversity" mode. To improve the downlink in fourfold receive diversity mode it is recommended to activate the feature "Transmission Diversity Time Delay".

In uplink direction, four RF signals are received and converted into traffic and signaling data. In downlink direction, traffic and signaling data are received and converted into two GMSK or 8PSK modulated signals which are amplified to the desired power level.

By using FlexCUs instead of other carrier units, the number of carriers within the existing rack(s)/shelter(s) can be doubled. This is an ideal solution to double the capacity of BTSs, an advantage not only for footprint restricted BTS sites.

A working FlexCU requires about 30% less power than two ECUs. As soon as a TRX is idle, the transmitter (TX) is switched off. With this enhanced power saving mode, the overall power consumption of an idle FlexCU (both TRXs in idle state) is only about 40 Watt.

The FlexCU supports all frequency bands: GSM 850, GSM 900, GSM 1800 and GSM 1900. One type for each frequency band exists (see also Table 6).

FlexCU operation modesFlexCUs may operate in two different modes: the double and the single TRX mode.

The double TRX mode is the default configuration of a FlexCU, with full support of MCS-1 to MCS-9 in uplink and downlink. It functions like two independent ECUs with complete twofold EDGE TRX functionality: Each of both transceivers shows a full-equipped main receiver and diversity receiver.

Figure 10 FlexCU – double TRX mode

The so called fourfold receive diversity mode is the single TRX mode in which the FlexCU functions as one carrier unit with four receivers. If transmit diversity is enabled, this mode is automatically activated.

The four receivers of the FlexCU are fed by four independent antennas via one (F)DUAMCO together with one DIAMCO or two (F)DUAMCOs, for example.

The TX path is fed via the (F)DUAMCO to two of the four antennas.

The fourfold receive diversity mode enhances the receiver sensitivity of the BTS. The doubled number of the RX paths leads to an enhanced diversity gain.

TX0

TX1

RX-N0RX-Div0

RX-N1RX-Div1

SignalProcessing

Combiner(s) TX0

TX1

RX-a

TX0RX-b

RX-cRX-dRX-d

RX-bRX-b

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Figure 11 FlexCU – single TRX mode – fourfold receive diversity mode

4.3.5 Carrier unit output power level The typical and the guaranteed values of RF output power level per TRX are listed below for CUs, GCUs, ECUs and FlexCUs, dependent on its frequency bands and mod-ulation types (GMSK and 8PSK). The values in "Watt" are rounded.

g For the U.S. market, you can find the power reduction of the carrier units for 850 MHz and 1900 MHz in chapter FCC Issues.

TX0

TX0

RX-NRX-Div0

RX-Div1RX-Div2

SignalProcessing

Combiner(s) TX0

TX1

RX-a

TX0RX-b

RX-cRX-dRX-d

RX-bRX-b

Frequency band

Carrier unittype

TypicalRF output power

GuaranteedRF output power

GMSK 8PSK GMSK 8PSK

dBm Watt dBm Watt dBm Watt dBm Watt

CU/GCU GSM 900 CUGV3 / V4 47.3 54 -- -- 47.0 50 -- --

GCUGV2 47.3 54 -- -- 47.0 50 -- --

GSM 1800 CUDV3 / V4 45.7 37 -- -- 45.4 35 -- --

GCUDV2 47.3 54 -- -- 47.0 50 -- --

GSM 1900 CUPV4 45.7 37 -- -- 45.4 35 -- --

ECU GSM 850 ECU850HPV2 48.3 68 46.3 43 48.0 63 46.0 40

ECU850V3 / V3A 48.3 68 46.3 43 48.0 63 46.0 40

GSM 900 ECUGV3 / V3A 48.3 68 46.3 43 48.0 63 46.0 40

GSM 1800 ECUDV2 47.3 54 45.3 34 47.0 50 45.0 32

ECUDHPV3 / V3A 48.3 68 45.3 34 48.0 63 45.0 32

GSM 1900 ECUPV2 47.3 54 45.3 34 47.0 50 45.0 32

ECUPHPV2 48.3 68 45.3 34 48.0 63 45.0 32

ECUPHPV3 / V3A 48.3 68 45.3 34 48.0 63 45.0 32

FlexCU GSM 850 FCU850V1 47.0 50 44.0 25 46.7 47 43.7 23

GSM 900 FCUGV1 47.0 50 44.0 25 46.7 47 43.7 23

GSM 1800 FCUDV1 47.0 50 44.0 25 46.7 47 43.7 23

GSM 1900 FCUPV1 47.0 50 44.0 25 46.7 47 43.7 23

Table 6 Carrier unit output power level (typical and guaranteed values)

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4.4 Antenna combining modules Various types of combining modules are available. Each type comes in various modules and is associated with various frequency bands.

The BTS can work with different amplifier multicouplers: e.g. with the DUAMCO, its suc-cessor FDUAMCO or the MFDUAMCO, which offers the most flexible way to combine.

The filter combiner FICOM6 offers the same advantages like MFDUAMCO but with lower insertion loss for a high number of TRXs per cell.

4.4.1 Duplexer amplifier multicoupler (DUAMCO) The DUAMCO consists of two identical modules. Each of the DUAMCO modules combines the transmit and receive paths to one antenna connector. It splits the receive signal to be used in the carrier units and serves as a duplexer unit, which provides filter-ing functions for both RX and TX paths and low noise amplification for the RX path.

Different versions of DUAMCO are available for each frequency band.

Different DUAMCO versions provide different functionality:

• a DUAMCO 2:2 module connects one carrier to one antenna

• a DUAMCO 4:2 module connects up to two carriers to one antenna

• a DUAMCO 8:2 module connects up to four carriers to one antenna

g It is possible to install DUAMCO/FDUAMCO modules of different frequency bands, but all combining equipment in a cell must support the same frequency range (that means either GSM 850, or GSM 900, or GSM 1800, or GSM 1900).

g Use FDUAMCORE modules for the GSM-RE 900 MHz band.

it is possible to install up to four DUAMCO 2:2 or DUAMCO 4:2 and up to two DUAMCO 8:2 respectively in one rack/shelter.

g DUAMCOs of different versions have a different TX attenuation.

The DUAMCO is equipped with complete TMA interfaces for DC supply and signaling. For more information, see Antenna combining - FDUAMCO/DUAMCO.

Fault propagation through dependent modules Each amplifier of the DUAMCO RX path (LNA) consists of two parallel branches. If only one branch of one amplifier has a failure, the amplifier will reach lower sensitivity and generates a warning. The operation continues with performance degradation.

If more than one branch of the whole amplifier chain is faulty, the corresponding path of the receiver will not be ready for operation. The connected carrier units lose one of their RX paths (normal or diversity path). The operation continues without diversity feature. If a carrier unit loses both RX paths, it will be configured out of operation.

4.4.2 Flexible duplexer amplifier multicoupler (FDUAMCO) The FDUAMCO is the successor of the DUAMCO. It consists of two identical modules, which each combine the transmit and receive paths to one antenna connector.

Each FDUAMCO module may be operated in one of the following modes (by jumper set-tings): • 2:2 mode: one carrier is fed to the antenna port

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• 4:2 mode: two carriers are combined and fed to the antenna port

The same mode of the FDUAMCO shall be installed within each cell/sector.

All RX and RXCA outputs of FDUAMCO which are not connected to RX input of a carrier unit, shall be terminated with 50 Ω load resistor. The termination is not required if an FDUAMCO module is not used in the cell configurations.

The FDUAMCO can be combined with a COAMCO8 module to support more carrier units.

The FDUAMCO is equipped with complete TMA interfaces for DC supply and signaling. For more information, see Antenna combining - FDUAMCO/DUAMCO.

4.4.3 MFDUAMCOThe MFDUAMCO is the successor of DUAMCO and FDUAMCO. It consists of two iden-tical modules, which each combines the transmit and receive paths to one antenna con-nector, and a single remote electrical tilt (RET) for controlling the antenna tilt.

Each MFDUAMCO module may be operated in one of the following modes (by jumper settings): • 2:2 mode: one carrier is fed to the antenna port • 4:2 mode: two carriers are combined and fed to the antenna port

The same mode of the MFDUAMCO shall be installed within each cell/sector.

All RX and RXCA outputs of MFDUAMCO which are not connected to RX input of a carrier unit shall be terminated with 50 Ω load resistor. The termination is not required if an MFDUAMCO module is not used in the cell configurations.

The MFDUAMCO can be combined with a HYBRID4 module and a COAMCO8 module to support more carrier units.

The MFDUAMCO is equipped with complete MHA/TMA interfaces for DC supply and signaling. For more information, see Antenna combining - MFDUAMCO.

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4.4.4 Hybrid extension module for MFDUAMCO (HYBRID4) The HYBRID4 is an optional module in combination with an MFDUAMCO to provide a 4:2 configuration or – with an additional COAMCO8 – an 8:2 configuration.

If used, it must be installed in the same ACOM slot as the related MFDUAMCO, because it is fastened to the MFDUAMCO by screws at the front panel.

The HYBRID4 unit consists of two identical modules. Each of these modules provides two RF input ports and one RF output port to combine the TX paths from several carrier units to one connector.

HYBRID4 modules are available for GSM 850/900 MHz or GSM 1800/1900 MHz.

g HYBRID4 and MFDUAMCO units of different manufacturers can be mixed.

For more information, see Antenna combining - MFDUAMCO-HYBRID4 configuration.

4.4.5 Multiple duplexer (MDUX) g MDUX and HYBRID6 modules are available for BTSs from BR9.0 onward.

The MDUX serves as a duplexer unit, which provides filtering functions for both RX and TX paths and low noise amplification for the RX path. The combiner splits the receive signal to be used in the carrier units.

The MDUX unit provides six independent duplexers with filtering functions for both RX and TX paths and low noise amplification for the RX path. The MDUX on the RX side provides four RX ports per duplexer. These four ports can be used to connect the RX paths of two TRXs and the RXdiversity paths of two other TRXs to one duplexer and hence prepares the duplexer for the implementation of cells with up to four TRXs and diversity.

The six duplexers can be freely assigned to different cells as required at the particular BTS site.

Depending on the usage of HYBRID6 (hybrid extension) modules, the MDUX can be used for six antennas with one or two carriers each, i.e. for up to 12 carriers in total:

• A duplexer without HYBRID6 module combines RX and TX of one TRX onto one antenna.

• The same duplexer enhanced with one 3dB hybrid unit of the HYBRID6 module combines RX and TX of 2 TRXs onto one antenna.

The MDUX has a DC power consumption of about 50 W and supports one frequency band.

Two MDUX modules of different frequency bands can be installed into same base or extension rack/shelter for dual-band applications.

Different types of the MDUX module are available for the frequency bands DCS 1800, E-GSM 900 and P-GSM 900.

g The frequency band of the combiner must correspond to the frequency band of the installed carrier units.

MDUX/HYBRID6 units can be configured together with other combining hardware, e.g. (F)DUAMCO or DIAMCO, in one base/extension rack/shelter.

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Restrictions for combiner usage

• If a TMA is needed, a 3rd party low-gain TMA with external BIAS-T and power supply must be used.

• A discrete alarm line instead of the CAN bus is used to indicate a failure of the MDUX-internal DC/DC converter. The alarm line is connected to the ACTC module.

• The combiner does not provide VSWR supervision and LNA alarms.

• All RX and RXCA outputs of MDUX which are not connected to an RX input of a carrier unit shall be terminated with 50 Ω load resistor. Termination is not required if the MDUX module is not used in cell configurations.

g Depending on the usage of HYBRID6 modules, the usage of cover parts becomes necessary:

• If 2 HYBRID6 modules are used (in ACOM slots), the remaining slot width must be closed with a cover part CP:DIAMCOV2.

• If only one HYBRID6 module is used (in an ACOM slot), the free space must be covered with one cover part CP:DIAMCOV2 and one cover part CP:COBA/COSV2.

• If only one HYBRID6 module is used (in a MUCO slot), the free space must be covered with one cover part CP:COBA/COSV2.

For detailed information, see Antenna Combining - MDUX.

4.4.6 Hybrid extension module for MDUX (HYBRID6) g MDUX and HYBRID6 modules are available for BTS from BR9.0 onward.

The HYBRID6 module consists of three hybrids units and is used in combination with an MDUX to combine two TRXs onto one antenna.

Each 3dB hybrid unit combines two TX signals of the same frequency band onto one output port. This output signal can be fed into the TX input port of one of the duplexers of a MDUX. The second output of the 3dB hybrid unit is terminated with a load.

Up to two HYBRID6 modules can be installed for six antennas with one or two carriers each, i.e. for up to 12 carriers in total (with FlexCUs).

As the module is purely passive, it does not require DC power supply, supervision and alarming. Different types of the HYBRID6 module are available for GSM 850/900 MHz and GSM 1800/1900 MHz.

g The frequency band must correspond to the frequency band of the used MDUX module and the installed carrier units.

For detailed information, see Antenna combining - HYBRID6 and Antenna combining - MDUX-HYBRID6 configurations.

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4.4.7 Co-amplifier multicoupler (COAMCO8) The COAMCO8 consists of two identical modules.

The COAMCO8 is used in combination with:

• FDUAMCO in 4:2 mode to provide an 8:2 configuration, so four carriers are combined and fed to the antenna port.

• MFDUAMCO-HYBRID4 configuration to provide an 8:2 configuration.

• MDUX-HYBRID6 configuration to provide an 8:2 configuration.

COAMCO8 modules are available for GSM 850/900 MHz or GSM 1800/1900 MHz.

For more information, see Antenna combining - COAMCO8.

4.4.8 Dual integrated amplifier multicoupler (DIAMCO) The DIAMCO is an optional module for antenna multicoupling and is required for the RX signal path in FICOM configurations and special DUAMCO configurations.

A DIAMCO module is used to split the RX antenna signal into several receiver inputs.

The DIAMCO is equipped with complete TMA interfaces for DC supply and signaling.

For more information, see Antenna combining - DIAMCO.

g BS-241 II B / BS-240 II B base and extension shelters/racks do not support the installation of DIAMCO units.

Fault propagation through dependent modules Each amplifier of the DIAMCO RX path (LNA) consists of two parallel branches. If only one branch of one amplifier has a failure, the amplifier will reach lower sensitivity and generates a warning. The operation continues with performance degradation.

If more than one branch of the whole amplifier chain is faulty, the corresponding path of the receiver will not be ready for operation. The connected carrier units lose one of their RX paths (normal or diversity path). The operation continues without diversity feature. If a carrier unit loses both RX paths, it will be configured out of operation.

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4.4.9 Mast head amplifier / tower mounted amplifier (MHA/TMA) MHA and TMA are optional modules that connect the antenna with the BTS in order to amplify the receive signal.

The configuration with MHA or TMA is advantageous because the system sensitivity will not be degraded by feeder cable loss.

The MHA is feasible only with MFDUAMCO from BR9.0 onward or with the FICOM6 from BR10.0 onward. MHA are not applicable for GSM-R BTS.

One MHA is needed for two RX paths, i.e. for one MFDUAMCO/FICOM6.

One single TMA (STMA) is needed for each RX path of (F)DUAMCO/DIAMCO. One dual TMA (DTMA) is needed for two RX paths of (F)DUAMCO/DIAMCO.

Different types of MHA exist for different frequency bands: • MDTA (850 MHz) • MDGA (E-GSM, 900 MHz) • MDDA (1800 MHz) • MDPA (1900 MHz)

The MDxA units replace the TMA units without change of functionality.

See Table 7 for possible substitutions if existing TMAs are replaced by MDxA.

Two kinds of TMA exist: The "single TMA" (GSM 850, GSM 900) and the "dual TMA" (GSM 1800, GSM 1900).

g If the TMA is used together with a HPDU, a BIAS-T (DUBIAS) for powering and sig-naling of the TMA is required.

The MFDUAMCO / FICOM6, if set to MHA/TMA mode (dip switch 1 and 6 are ON, or equivalent O&M configuration setting), automatically detects the connected type of MHA /TMA (legacy S/DTMA or MDxA) and then initiates the correct operating mode of MDxA after power-up.

The O&M functionality with respect to TMA/MHA is unchanged with previous and current BR SW releases (up to BR10).

For more information, see Antenna combining - MHA/TMA.

MHA: Fault propagation through dependent modules The MHA is monitored via AISG protocol. The connected MFDUAMCO/FICOM6 gener-ates an alarm to O&M in case of malfunction. LEDs on the front panel of the MFDUAMCO/FICOM6 show the state of each MHA. Each green LED indicates that the DC for the MHA is "OK" and each red LED gives notice of a faulty MHA if the BTS is configured for MHA.

previous TMA MHA

STMA E-GSM MDGA

STMA 850 MDTA

DTMA DCS MDDA

DTMA PCS MDPA

Table 7 Possible TMA substitutions with MHA

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If a branch fails, the amplifier will be bypassed by the "Fail save switch". The connected MFDUAMCO/FICOM6 generates an alarm message towards the O&M. The red LED in the MFDUAMCO/FICOM6 of the concerned MHA is switched on, and the multicoupler device will be switched into AMCO mode automatically. The operation continues with minor performance degradation.

If an MHA is installed, the MFDUAMCO/FICOM6 works in MUCO mode and only the second amplifier of the RX chain is active. If the MHA fails, "Fail save compensation" will take effect. The MHA connects the antenna directly to the MFDUAMCO/FICOM6, receives a message to switch over into AMCO mode. In AMCO mode, both amplifiers become active and the attenuation switches off. The connected carrier units continue their operation with minor performance degradation. Only a POWER ON/RESET or a software reset can terminate the state of "Fail save compensation".

TMA: Fault propagation through dependent modules The TMA watches its LNA by monitoring the DC current and generates an alarm message towards (F)DUAMCO/DIAMCO. The connected (F)DUAMCO/DIAMCO gen-erates an alarm to O&M in case of malfunction. LEDs on the front panel of the (F)DUAMCO/DIAMCO show the state of each TMA. Each green LED indicates that the DC for the TMA is "OK" and each red LED gives notice of a faulty TMA if the BTS is con-figured for TMA.

The LNA consists of two parallel branches. If only one branch has a failure, the amplifier reaches lower gain and the connected (F)DUAMCO/DIAMCO will generate a warning towards the O&M. Operation continues with performance degradation.

If both branches fail, the amplifier will be bypassed by the "Fail save switch". The con-nected (F)DUAMCO/DIAMCO generates an alarm message towards the O&M. The red LED in the (F)DUAMCO/DIAMCO of the concerned TMA is switched on, and the multi-coupler device will be switched into AMCO mode automatically. The operation contin-ues with minor performance degradation.

If a TMA is installed, the (F)DUAMCO/DIAMCO works in MUCO mode and only the second amplifier of the RX chain is active. If both branches of the TMA fail, "Fail save compensation" will take effect. The TMA connects the antenna directly to the (F)DUAMCO/DIAMCO, receives a message to switch over into AMCO mode. In AMCO mode, both amplifiers become active and the attenuation switches off. The connected carrier units continue their operation with minor performance degradation. Only a POWER ON/RESET or a software reset can terminate the state of "Fail save compen-sation".

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4.4.10 Filter combiner with six TNFs (FICOM6) g The FICOM6 module is available for a BTS from BR10.0 onward.

Full O&M support includes, for example:

• Unrestricted, independent mapping and coordination by LMT/RC

• Standard double antenna configuration with up to 12 TRXs connected to two FICOM6 modules in one rack/shelter

• Possibility of mixed operation between FICOM and FICOM6 in one rack/shelter

• Support of 3rd party low gain TMAs

• Support of MHAsThe FICOM6 is the successor of FICOM (base and expansion) modules. It is an antenna combiner with integrated RX amplifier and RX multicoupler function. The RX amplifiers are realized as low noise amplifiers (LNA). One FICOM6 module joins the functionality of one FICOM base module, two FICOM expansion modules, one DIAMCO, one HPDU and one DUBIAS.

With one FICOM6 module, it is possible to combine up to six TRXs per antenna. With a standard double antenna and BR10, up to 12 TRXs are configurable.

The FICOM6 provides the same functionality as an MFDUAMCO module but with differ-ent TX combining: All TRXs are combined with tunable narrowband filters (TNFs) to a single antenna. For high numbers of TRXs per cell, this combiner technique provides lower insertion loss than wideband combining (see table below). An extra advantage of the FICOM6 is its high capacity in combination with high TX power.

Up to two FICOM6 modules can be installed in each base or extension rack/shelter.

The FICOM6 module can be implemented for two different frequency bands: R-GSM 900 and GSM 1800.

The FICOM6 supports 3rd party TMA units in current window mode, no legacy TMA units.

Restriction for combiner usage

• Synthesizer frequency hopping is not supported.

For more information, see Antenna combining - FICOM6.

TRXs per cell

Typical insertion loss (dB) 1)

1) Values exemplary for six TRXs at 600 kHz within 80% bandwidth.

TX power improvement with FICOM6 (dB)FICOM6 FDUAMCO

1 - 2 3 *) 1.1 -1.9

3 - 4 3 *) 4.3 1.3

5 - 8 3 *) 7.8 4.8

9 - 12 3 *) n.a. ---*) preliminary values without guarantee

Table 8 FICOM6 and FDUAMCO: Insertion losses – comparison

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4.4.11 Filter combiner (FICOM) With a FICOM it is possible to combine up to eight signals in the downlink direction (TX) in one rack/shelter. For the uplink direction (RX), the DIAMCO has to be used to filter and distribute the received signals to the carrier units. A big advantage of the FICOM is the very low insertion loss.

The FICOMs are implemented for two different frequency bands: R-GSM 900 and GSM 1800.

For more information, see Antenna combining - FICOM.

4.4.12 High power duplexer (HPDU) The HPDU combines the TX path and the RX path to one antenna, in order to minimize the number of antennas when FICOM is used. The HPDU contains a duplex filter for the transmit frequency band and for the receive frequency band, but no low noise amplifier in the RX path.

The HPDUs are implemented for three different frequency bands: P-GSM 900, GSM-PS 900 and GSM 1800.

Up to two HPDU can be integrated on top of the rack/shelter below the cover and up to two HPDU can fit in the gap between the inner side wall and the frame in the rack/shel-ter.

g If the TMA is used together with a HPDU, a BIAS-T (DUBIAS) for powering and sig-naling of the TMA is required.

For more information, see Antenna combining - HPDU.

g BS-241 II B / BS-240 II B base and extension shelters/racks do not support the installation of HPDU units.

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4.5 Power supply modules

4.5.1 AC/DC system An AC/DC system is required if the BTS is supplied by AC mains. The AC/DC module converts the AC mains voltage (nominal AC input voltage: 230 V) into the -48 V DC supply voltage.

The AC/DC system consists of one or two frames housed in the service1A rack/shelter.

A frame contains:

• Up to six AC/DC modules ("n+1" for optional redundancy)

• One controller board DCBCTRL for battery supervision, AC/DC supervision, alarm interface

• Frame with AC distribution, DC Distribution, signal distribution between AC/DCs, and controller board via backplane

The AC/DC system includes fans to force the cooling airflow through the AC/DC modules.

The tasks of an AC/DC module are the supply of all -48 V consumers within the BTS and the generating of alarms in case of AC mains or module failures.

The AC/DC system tasks are in detail:

• Output supplying all -48 V-consumers within the BTS; input supplying of 230 V AC single-phase or 3-phase-distribution for the world market and 120/208 V AC 3-phase-distribution (208 V phase to phase) for the U.S. market

• Supplying external equipment with -48 V

• Charging and supervising of different backup battery types

• Supervising AC/DCs, batteries, and alarm messaging

• Switching off DC outputs (AC/DCs as well as battery) in case of under and over tem-perature

• Hot plug-in/out of AC/DC modules

The AC/DC and the backup batteries work as an uninterruptible power supply system (UPS).

AC/DC modules work in load sharing "n+1", but n AC/DC are able to supply the whole BTS (redundancy concept). A local AC/DC supervision and management system has been implemented which is accessible via RS232 interface and external PC. The AC/DC system has external alarm outputs to be connected via wire to the ACTC.

The nominal DC output power of one AC/DC module is 1600 W.

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4.5.2 Backup battery (BATTPACK) The backup battery guarantees continuous operation for a certain time in case of main breakdown or AC/DC failure.

The battery backup time depends on the configuration and the battery type. Different battery types for each BTS type are available.

Backup batteries are mandatory for AC-supplied systems and must be installed in the service racks/shelters.

All battery systems connected to one AC/DC system should have the same capacity.

The capacity of the backup battery can be increased by additional batteries in separate service2 racks/shelters.

Emergency operation The backup time of each BTS can be increased by using the "Emergency operation" feature. To hold the BTS in operation mode for an extended time, it is necessary to switch to "Emergency configuration" after a user-defined time. In this mode, none or only operator defined TRXs remain in operation. All TRXs, which are not part of the emer-gency configuration, are switched off.

The core modules and optional transmission equipment are supplied with DC voltage until low voltage detection circuit (LVD relay) disconnects the backup battery from system load.

If enabled, a second timer counts for another user-defined time. With its expiration, all modules except the core modules are switched off. This means "Zero configuration".

4.5.3 AC/DC panel (ADP) An ADP is required for the connection of the BTS to the AC supply line, to the internal battery (if applied), and to the optional batteries of the service2 rack/shelter.

The AC/DC power distribution panel is integrated into the service1A rack/shelter and consists of the following main components:

• AC breakers for the AC phases

• AC service socket 230 V with RCD protection (4A nominal current) or 120 V with RCD protection (15 A) for 120/208 V version

• ACTC (except with ADP-2Vx; see note below)

• DC breakers for base and extension racks/shelters, for all service2 racks/shelters, and all LE in the service1A rack/shelter, for fan units, for the ACTC module, for other panels

• Battery breaker

• High-current clamp terminals for DC supply of other racks/shelters and for battery connection

The DC lines (-48 V, 0 V) of the base/extension/service2 rack/shelter will be connected to clamp terminals at the front-panel of ADP.

One ADP-2 (with F:ACTC-2) or ADPA is required for the service1A rack/shelter with a suitable mounting kit for the AC application.

g The ADP-2Vx module needs a special frame F:ACTC-2, e.g. for housing the ACTC.

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4.5.4 DC mains supply unit (MSU:DC) The MSU is located at the EMI panel (BS-240 II / 240 II B) or into the plinth below the EMI panel (BS-241 II / 241 II B).

The MSU:DC provides the lightning protection (optional feature), the EMI filter, and the terminal clamps for the external DC cable (-48 V, 0 V).

The lightning protection element indicates fault conditions on an alarm output (LPA) which is linked to the ACTC module.The upgrade kit for lightning protection comprises the OVP element, the upgrade cable kit and the LPA connection cable.

One MSU:DC has to be installed in each BS-240 II rack (base/extension/service2) and BS-241 II / 241 II B shelter (base/extension) respectively.

For BS-240 II, MSU:DC 50 A, 80 A or 100 A are available. Also, an MSU:BASV4 (120 A-MSU for Basic Set; optional with lightning protection) can be installed. If ECUs or FlexCUs shall be installed, MSU:DC 50 A modules are not permitted.

For BS-241 II, an MSU:DC 120 A must be used for base and extension shelters.

For BS-240 II B and BS-241 II B, an MSU:100ADCV1 with 100 A is required for each base and extension rack/shelter. The MSU:100ADCV1 has an integrated lightning pro-tection with alarm output.

g Lightning protection is mandatory if DC cables with a length of more than 10m are applied.

g A mix of MSU:AC and MSU:DC in one BTS is not permitted in case of BS-240 II or BS-241 II.

4.5.5 AC mains supply unit (MSU:AC) The MSU:AC contains the terminal clamps for connecting the external AC supply lines, the EMI filter, and – optional – the lighting protection element.

The lightning protection element indicates fault conditions on an alarm output (LPA) which is linked to the ACTC module.

One 3-phase MSU:AC (type MSU:AC3PH or MSU:BASV2) or one 2-phase MSU:AC in the U.S. version has to be installed in the service1A rack/shelter. In all other racks/shel-ters, the cover part CP:MSU must be installed.

The AC supplied service 1B shelter of the BS-241 II B requires the MK:3PH-23Vx for the mains power supply connection.

If lightning protection is required and not included in the MSU module, suitable upgrade kits for lightning protection are available.

g A mix of MSU:AC and MSU:DC in one BTS is not permitted in case of BS-240 II or BS-241 II.

4.5.6 DC and battery controller (DCBCTRL) The DCBCTRL supervises the AC/DC modules and the DC outputs of the AC/DC system. It indicates the status of the power supply system with LEDs.

The DCBCTRL modules of the various power supply systems cannot be interchanged against each other.

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In detail, the DCBCTRL performs the following functions:

• Supply of all -48 V consumers with DC power

• Load On / Off

• Battery On / Off

• Charging of battery backup system

• Monitoring of battery current

• Monitoring of load voltage range and battery voltage range

• Monitoring of rack and battery temperature ranges and switching off the DC power in case of over- or under-temperature

• Interface for alarm signals (external/internal)

A serial data link (RS-232) is provided to download the DCBCTRL set-up data (like tem-perature thresholds for cold-start and the nominal battery capacity of the connected battery systems).

4.5.7 DC panel (DCP) The DCP is used for distribution of the -48 V supply voltage to the modules and inte-grates the DC breakers to protect the DC power lines.

The DC panel is situated in every base and extension rack/shelter. Single breakers are dedicated to the carrier units, the core modules, the combiners, the fans, and the ACTP. The DC panel also contains the ACTC module.

In addition, two connectors (LMT and Ethernet connector) are integrated into the front cover of the DC panel. These connectors are linked to the COBA module.

4.5.8 DC link equipment breaker panel (DCP:LEBREAK) In the service2 rack/shelter, the DCP:LEBREAK (LE breaker panel) is mandatory. In service1A, a DCP:LEBREAK is required only in case of LE installation.

The LE breaker panel provides the distribution of the -48 V supply voltage to the modules within the service racks/shelters and integrates the required DC breakers (each 25 A maximum) for the different circuits.

The LE breaker panel provides slots for up to eight DC breakers in service1A rack/shel-ter and up to seven DC breakers (with a panel V3) or six DC breakers (with a panel V1/V2) in service2 rack/shelter, which may be used for connecting the LE modules.

In addition to the six breakers in the service2 rack/shelter, a breaker (10 A) for the ACTC/ACTP/smoke sensor (for outdoor only) modules is also integrated into the LE breaker panel. The ACTC module is capable for collecting up to eight cabinet alarms, and the alarms generated by fan units, lightning protection alarm and rack door open sensor. Another breaker (10 A) is reserved for the fan units.

The LE breakers can be plugged in during installation of link equipment at the BTS site.

At the front of panel, the high-current clamp terminals are located for connecting the DC supply 10 lines (-48 V, 0 V).

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4.5.9 Alarm collection terminal boards (ACTC, ACTP, ACTM) The ACTC is installed once in each rack/shelter (part of the DC-Panel or AD-Panel or LE-Panel) to collect all internal alarms. In the base rack/shelter , the ACTC is directly connected to the COBA. In all other racks/shelters, the ACTC is connected to the ACTP. In each extension and service rack/shelter, an ACTP module has to be installed.

The ACTC has inputs for 16 discrete alarm lines: rack door alarm, fan alarms, temper-ature alarms, and internal cabinet alarms, which can be defined by the operator.

The ACTC board provides connectors (4 pins) for DC supply (-48 V) and alarm interface to: • Fan units • Smoke sensor (SMOKE) • Location measurement unit (LMU) with -48 V DC supply only, but no alarm interface

The ACTC board also provides connectors (2 pins) for alarm interface to: • Rack door open sensor (RDO) • Lightning protection alarm (LPA/OVP)

For rack alarms, a 24-pin terminal clamp is used.

On customer request, in the base rack/shelter an ACTM module can be installed. In addition to the 16 internal rack alarms collected with ACTC, 24/48 inputs are available with ACTM24Vx/ACTMVx, which can be freely used for external alarms. To protect the signal lines of the ACTM against overvoltage, an EAP unit (for all lines) or OPEXAL modules (for up to 10 lines each) are available.

The need of EAP or OPEXAL depends on the following situations:

• If all signal lines connected to the ACTM are less than 30 meters long and are kept within the building, no additional overvoltage protection is needed.

• If any signal line connected to the ACTM is more than 30 meters long with all signal lines still kept within the building, the EAP unit must be used for all external alarm lines.

• If at least one of the external alarm lines is leaving the building, each external alarm line must be protected by its own OPEXAL module.

• Any signal line connected to the ACTM of an outdoor base shelter version must be protected by its own OPEXAL module.

g The ACTM is mandatory if more than 9 external site alarms are required.

Fault propagation through dependent modules If the ACTC, ACTP or ACTM fails during operation, the BTS continues the operation.

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4.6 Abis interface modules

4.6.1 Overvoltage protection and tracer (OVPT) The OVPT is an optional module. Alternatively, an ABISCON module can be installed.

But, the installation of an OVPT module becomes mandatory if:

a) For indoor: The connection point for the Abis line (e.g. Network termination for PCM30 or Microwave equipment) is outside of the building which is housing the BTS.

b) For outdoor: The connection point for the Abis line is outside of the service1/2 shelter.

The OVPT is responsible for protection of the PCM24/PCM30 ports of the Abis interface and the external synchronization clock input of the BTS against overvoltage. Addition-ally, the OVPT provides interfaces to connect PCM tracers without interruption for mon-itoring the Abis lines and an input interface for external synchronization sources. The OVPT is located outside the EMI shield to terminate possible overvoltages before they enter the EMI protected area inside of the rack/shelter.

The board performs the following tasks:

• Lightning protection of PCM lines

• Lightning protection of the external synchronization clock

• Provision to connect external monitoring equipment without interruption; the lines are decoupled to prevent distortions

• Support of 75 Ω coax or 100 Ω /120 Ω balanced lines

g – Up to 2 PCM lines are supported with COBA2P8 module. – Up to 4 PCM lines are supported with COBA4P12 and COREXT module. – Up to 8 PCM lines are supported with COBA2P8 plus COSA6P16 installed or

COBA4P12 plus COSA4P12. If more than 4 PCM lines are required, a second OVPT needs to be installed.

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Figure 12 ABISCON and OVPT (100/120 Ω )

4.6.2 Abis connection (ABISCON) The ABISCON is an optional module. An OVPT module is available as an alternative to the ABISCON.

The Abis connection module provides the interface between the rack/shelter and the peripheral Abis cables. The Abis connection module also provides the feature for mon-itoring the Abis lines and an input interface for external synchronization sources. The module is located outside the EMI shielding.

The board performs the following tasks:

• Support of 75 Ω coax or 100 Ω /120 Ω balanced lines

• Provision to connect external monitoring equipment without interruption; the lines are decoupled in order to prevent distortions

For an appearance of an ABISCON see Figure 12.

g – Up to 2 PCM lines are supported with COBA2P8 module. – Up to 4 PCM lines are supported with COBA4P12 and COREXT module. – Up to 8 PCM lines are supported with COBA2P8 plus COSA6P16 installed or

COBA4P12 plus COSA4P12. If more than 4 PCM lines are required, a second ABISCON needs to be installed.

4.6.3 Ethernet connector module (ETHCON)The ETHCON unit is mandatory in combination with one or two CESCOBA(s), which is necessary for Circuit Emulation Service over Packet Switched Network (CESoPSN) functionality. This feature allows carrying TDM traffic over a packet network without external equipment. TDM to packet interworking functionality is based on the Pseudo Wire emulation Edge-to-Edge mechanism (PWE3), which allows the transport of all relevant parts of a service, such as E1/T1 lines over a packed switched network. For

monitoring interfaces

OVPTABISCON

uplink linesdownlink linesterminals for external PCM cables

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more information about CESoPSN functionality, see the feature description “FD10560: Internal Ethernet/IP interfaces for BSS”.

The ETHCON replaces the ABISCON or OVPT board (Abis interface 0...3).

CESCOBA and ETHCON are available from BR10 onward.

It performs the following tasks:

• Provision of two 100Base-TX electrical Ethernet interfaces, e.g. to BSC or to another BTS, one internal 100Base-Tx interface to the active CESCOBA, and two 100Base-TX electrical Ethernet trace ports

• Provision of two SFP slots for support of optical Ethernet ports (100Base-FX, 1000Base-LX, or 1000Base-SX)

• Over voltage protection of the external clock synchronization inputs

• Provision of remote inventory data

The ETHCON must be installed in PCM0 slot only (top of base rack, or plinth of base shelter). The mounting kit MK:ETHCONSHV1 is required for installation of ETHCON unit into plinth of BTSplus shelter, the MK: EAPB-BOXRV1 is required for installation of ETHCON unit together with HPDU unit on top of BS-240 II / 240 II B base rack.

ETHCON provides the following interfaces:

– Fast Ethernet interfaces on Port 0 and Port 1The interfaces are specified for indoor use and contain over voltage protection.

– 100 Mbit/s or 1Gbit/s on SFP Port 2 and Port 3

– Interface for synchronization with an external clock (connector block 1 to 6)– input of balanced signal, or unbalanced signal ()– monitor output for external clock

Redundancy aspectsOnly one ETHCON unit can be installed into a base cabinet. Therefore, all BTS con-nected to the ETHCON will lose their connection to the BSC if the ETHCON unit is defective, despite of possible core redundancy. The power supply for ETHCON is redundant in case of redundant CESCOBA units.

Power consumptionThe ETHCON unit has a maximal DC power consumption of about 8 W with two SFP modules and about 1 W with one SFP module installed.

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Module description

4.7 Overvoltage protection of external alarms (OPEXAL)OPEXAL is an optional overvoltage protection module for the ACTM alarm input lines.

For indoor applications, the OPEXAL10 is located outside the rack, fixed to a wall. For outdoor applications, the OPEXAL10 is installed within the plinth of the rack/shelter.

One module OPEXAL10 is able to protect 10 alarm input lines.

4.8 Abis link equipment (LE) The LE is an optional module and provides physical terminations for the Abis interface. It can be provided as an optional module or by the customer. Different equipment can be used for wire, radio or optical transmission depending on customer requirements. If radio transmission is required, microwave equipment can be used. Direct connections of the PMC30/24 links are also possible.

If no other connection between the BTS and the BSC or other BTS exist, the LE can be installed inside the BTS.

Cable entries are available for the connection of LE to external interfaces (Abis links).

The number of LE that can be installed depends on the height of each LE.

4.9 Membrane filter (MEF) A MEF is mandatory for each shelter of an outdoor BTS.

The MEF is fitted to the inside of the door to protects the BTS against dust particles and water. It can only be installed in outdoor variants of the BTS.

For shelters SH:BS81SV6 and V7, the new MEF65Vx is available as standard module. This MEF has a size of 6.5 m2 and is sufficient for all standard tasks. For excessive site conditions, e.g. pollution with respirable dust by diesel exhaust particulates or exhaust emission, the MEF150V5 with a size of 10 m2 can optionally be ordered (initially or as spare part if service life time of the MEF65Vx is too short based on operational experi-ence).

A new membrane filter type MEF35Vx with a filter size of 3.5 m² is standard for service shelter and service1B shelter SH:BS81S1AV1. For both shelter types, the MEF65Vx with a filter size of 6.5 m² can also be applied for longer operational life.

Table 9 gives an overview of standard and optional MEF filter sizes for each shelter type.

MEF sizes according to site specific air pollution


base/extension service1A base/extension service1B

SH:BS81SV6

SH:BS81SV7

SH:BS81SV6

SH:BS81SV7

SH:BS81SV8

SH:BS81S1AV1

V4A* V2A* V4A* V2A* aluminum V2A*

standard 10 m2 6.5 m2 6.5 m2 6.5 m2 6.5 m2 3.5 m2

optional 6.5 m2 10 m2** 10 m2 10 m2 10 m2 6.5 m2

Table 9 Standard and optional MEF filter sizes for BS-241 II / 241 II B shelter types

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* V2A: high quality stainless steel; V4A: high quality stainless steel with high corrosion resistance against chlorides and sea water. See Shelter architecture BS-241 II B for details about shelter types.

** standard for DC power supply variant

4.10 Fan unit The fan unit produces a sufficient airflow to cool the installed modules.

In order to keep both, the acoustic noise and the power consumption of all fans at the lowest level possible, the fan speed is temperature controlled via an integrated (internal) sensor.

Furthermore, each fan delivers a "Fan failure" signal which is collected by the ACTC. In the base rack/shelter, the signal is processed by the COBA. In extension and service racks/shelters, it is processed by the ACTP.

Mandatory fan units:

6 fan units must be installed into each: • BS-240 II base or extension rack • BS-241 II base or extension shelter

4 fan units must be installed into each: • BS-241 II B base or extension shelter • BS-240 II B base or extension rack

2 fan units must be installed into each: • BS-240 II service1A rack • BS-241 II service1A/service2 shelter

1 fan unit is an integral part into each: • BS-241 II B service1B shelter

Optional fan units:

2 additional fan units shall be installed into the BS-240 II service1A rack if the power consumption of the installed LE exceeds 600 W.

2 fan units shall be installed into the BS-240 II service2 rack if there is at least one LE installed.

4 fan units shall be installed into the BS-240 II service2 rack if the power consumption of the installed LE exceeds 1 kW.

A mixed configuration of fan types is permitted.

g If at least one FlexCU is installed, fan units FANV6 or FAN-NIVx must be used in all CU sub-frames.

4.11 Heater The heater is an optional unit for outdoor use, thus only available for BS-241 II / 241 II B.

The tasks of the heater are to preheat the ingested air and to warm up the shelter if the temperature inside the shelter is below the specified operating temperature range of the integrated modules.

If ambient temperatures below -5°C (+23°F) are expected, each shelter needs a heater.

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Cold start with BS-241 II service1A shelter: During cold start, only the heater(s) and the DCBCTRL board are powered. All other modules remain switched off. They are switched on as soon as the internal temperature of the service1A shelter is higher than +5°C (+41°F). The heaters in all shelters in this configuration are controlled by two tem-perature switches with different thresholds for heater and fan.

Cold start with BS-241 II service1B shelter: The AC heater of the service1B shelter is switched on when AC mains returns, but DC output remains off until the internal shelter temperature rises above -5°C. Subsequently, the DC output to BTS load (base shelter, extension shelter and LE in the service1B shelter) is switched on in a second step, controlled by the DCBCTRL of the service1B shelter. The DC heaters of the base and extension shelters are switched on immediately, controlled by their own TMB modules, but the system modules remain off until the internal shelter temperature rises above +4°C.

AC-heaters are used for all shelter types if the BTSE is supplied by a service 1A shelter. If it is supplied by a service 1B shelter, an AC-heater is used for the service shelter. Tem-perature dependent switching on/off is done by integrated switches.

DC-heaters are used for DC-supplied base or extension shelters. The "switching on/off" function is done by the temperature management board (TMB). The TMB also controls the temperature dependent switching on/off of the entire shelter. The temperature control units of base and extension shelters operate independently.

If a heater is necessary, the BS-241 II base/extension shelter consists of one heater unit (500 W nominal power AC or DC supplied) with tangential blower; the BS-241 II service 1A/1B shelter consists of one heater unit (500 W nominal power AC supplied) with tan-gential blower; the BS-241 II B base/extension shelter consists of two heater units (500 W nominal power DC supplied). Table 10 gives an overview of the heaters in different shelters.

g If ambient temperatures of about -14°C or below occur and the door of a base or extension shelter is opened in operation, the system units of the shelter may be switched off from DC supply with utmost probability due to cold air stream to the external temperature sensor of TMB.


base/extension service1A / service2

service1B base/extension service1B

externalAC power supply

AC-heater 500 W with tangential blower

AC-heater 500 W with tangential blower

2 DC-heaters 500 W without tangential blower

AC-heater 500 W (type 23) with tangential blower

DC-heater 500 W with tangential blower

AC-heater 500 W (type 23) with tangential blower

externalDC power supply

DC-heater 500 W with tangential blower

2 DC-heaters 500 W without tangential blower

Table 10 Overview of heater types depending on shelter type and power supply

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Fault propagation through dependent modulesIf the heater is faulty, the BTS will operate as long as the temperature inside the shelter stays within defined operating range.

If the temperature falls below the lower threshold of the defined range, the AC/DC modules and the backup battery are switched off and the BTS is shut down.

If the internal temperature rises into the defined operating range again, the BTS starts automatically with operation.

4.12 Smoke detector A smoke detector (or smoke sensor) is an optional module for the outdoor BTS and operates on the "light scatter" principles.

The two available types of smoke detector differ in their function: One type works with an "active LOW" alarm signal treatment, the other one with an "active HIGH" alarm signal treatment.

The alarm signal of the smoke detector is connected to the ACTC module of the con-cerned shelter.

g Smoke detectors must not be used for the U.S. market.

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5 Antenna combiningIn order to serve cells with different carrier numbers and antenna configurations, certain combinations of combining modules are required. These configurations provide the nec-essary performance in an effective way.

g The term "(MF/F)DUAMCO" stands for the modules DUAMCO, FDUAMCO, and MFDUAMCO.

Antenna combining is used to connect the carrier units (CU) to the antenna system.

Duplex combining connects the receiver (RX) and the transmitter (TX) of a carrier unit to a common antenna. This is done by a duplex filter and serves as the basic function of a combining unit. Additionally, this filter provides the selectivity to fulfill the require-ments according to the requests of the GSM standard. The receiver part of the duplex filter is terminated by a low noise amplifier, which further on serves several analog outputs.

If several transmitters should use the same antenna, they have to be combined before feeding them to the TX section of the duplex filter. Two types of transmitter combining are available: Hybrid combining (wideband) and filter combining (narrow band).

TX hybrid combining is available for 2 or 4 carriers. TX filter combining is valid for up to 8 carriers with the full extended FICOM and up to 6 carriers with the new FICOM6.

• FICOM: Only TX combining, no receiver path integrated. An additional DIAMCO module and also HPDU might be needed.

• FICOM6: One basic combining module with filter combining for up to 6 TX. Addition-ally, a complete receiver path for diversity reception is integrated.

All DUAMCO, FDUAMCO, and MFDUAMCO modules contain two independent sections with equal functionality, that is two separate antennas are handled by those combiner devices.

• DUAMCO 2:2 : Two basic combining modules, no hybrid TX combining

• DUAMCO 4:2 : Two basic combining modules, each with hybrid combining for 2 TX

• DUAMCO 8:2: Two basic combining modules, each with hybrid combining for 4 TX

• FDUAMCO: Two basic combining modules, each with switchable hybrid combining for up to 2 TX. An expansion to 4 TX for each module may be done by the COAMCO module.

• MFDUAMCO: Two basic combining modules. For hybrid TX combining the add-on module HYBRID4 is requested.

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5.1 MFDUAMCO The MFDUAMCO (multi-standard FDUAMCO) is the successor of DUAMCO and FDUAMCO and offers a flexible way to combine by using the additional HYBRID4 and COAMCO8 modules.

A maximum number of TRXs to be connected:

• 2 TRXs with MFDUAMCO

• 4 TRXs with MFDUAMCO in combination with a HYBRID4

• 8 TRXs with MFDUAMCO in combination with a HYBRID4 and a COAMCO8

g The frequency band of the MFDUAMCO must correspond to the frequency band of the concerning cell to be served.

Design and function The MFDUAMCO consists of two (identical) modules, a remote electrical tilt (RET, hardware prepared) and a common part. Each module contains a duplex filter to be fed to a common antenna. The duplex filter combines the RX and the TX paths together. The gain of the receive path is switchable to an amplifier multicoupler (AMCO) or a mul-ticoupler (MUCO) configuration (see below Operating modes for MFDUAMCO).

Each RX path consists of: • the low noise amplifier (LNA), two branches • an attenuator (MUCO mode only) • four equivalent outputs • a cascade output

The LNA ensures a low system noise figure and consists of two branches. In case of malfunction in one of the amplifiers, the RX gain of the MFDUAMCO decreases by about 6 dB.

The LNA provides 4 outputs of the amplified received signal. These output ports are con-nected to the corresponding carrier units by jumper cables.

Each TX path consists of: • an isolator for the TX input • an antenna supervision unit (ASU) • jumpers for combining mode setting

The isolator for the TX input protects the power amplifiers (PAs) inside the carrier units from each other in order to assure the required intermodulation suppression.

The MFDUAMCO detects a VSWR alarm and generates a failure information towards the O&M (CAN bus interface). This information is subdivided in several levels with the following characteristics:

Module 0 of MFDUAMCO is prepared for a RET interface (to be provided via triplexer at antenna output ANT0). Module 0 supports single feeder configuration (SFC) where the power supply and the signaling for the single feeder DTMA (SDTMA) are provided also via triplexer at antenna output ANT0.

– VSWR < 2– 2 ≤ VSWR ≤ 3– VSWR > 3

no alarm or warning generation of warning "Minor VSWR fault"generation of VSWR alarm "Major VSWR fault"

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The common part consists of: • a DC/DC converter plus a power distribution unit • an O&M unit

The DC/DC converter supplies the MFDUAMCO. The power distribution unit provides the DC power supply of the MHAs/TMAs. Alarm monitoring is done with a signaling unit between MFDUAMCO and MHA/TMA.

The O&M unit transmits error messages to the COBA via an O&M bus (CAN bus).

Operating modes for MFDUAMCO The MFDUAMCO has two operating modes: • AMCO mode • MUCO mode

During the BTS commissioning, the RX path must be switched into one of these modes (by DIP switches, or – from BR10 onward – via LMT or RC, see below). This adjustment is done only once during the installation of the BTS by the service personnel.

The high amplifying AMCO mode is used if the antenna is directly connected to the MFDUAMCO (without a preamplifier MHA or TMA). The MFDUAMCO gain is around 20/22 dB (see Table 12, also for RXCA gain).

The low amplifying MUCO mode is used in case of cascading the MFDUAMCO with a preamplifier MHA or TMA. A built-in attenuator provides a constant gain between MHA/TMA and MFDUAMCO, independent of the cable loss. The power supply and the signaling of the MHA/TMA are provided by the MFDUAMCO via triplexer at the antenna outputs.The gain is reduced to about 2 dB (see Table 12, also for RXCA gain). The gain of the MFDUAMCO can be matched to the cable loss and the MHA/TMA gain by DIP switches.

The gain adjustment is performed at commissioning by setting the attenuator in MFDU-AMCO/FICOM6 by dip switches, or, from BR10 onward, by using the appropriate con-figuration command in the O&M system. See the Commissioning manuals for details.

The selected mode can be read by O&M software via CAN bus interface.

From BR10 onward, the O&M support of the MFDUAMCO is extended:

• RX gain adjustment is configurable via LMT and remote via RC. Even missing or wrong DIP switch settings can be corrected from remote. In this case, the LED (TMA) is permanently green flashing.

• The VSWR thresholds for warning and alarming is configurable via O&M command. Increasing the threshold value may be useful in order to inhibit sporadic VSWR alarms.

• 3rd party TMAs (low gain, no fault signaling) are better supported by O&M software. The RX amplifier mode and the TMA power supply can be enabled/disabled inde-pendently, allowing AMCO mode and TMA power supply in parallel. This is not possible with other combiners because the TMA power supply can be enabled in parallel implicitly with the MUCO mode. Outages of TMAs without fault signaling are detected and alarmed by using the DC monitoring feature of the MFDUAMCO.

• Product and device specific TMA information can be retrieved in case of TMA sig-naling via HDLC protocol.

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The following figure shows the block diagram of an MFDUAMCO:

Figure 13 MFDUAMCO block diagram

MFDUAMCO

Tri-plexer

VSWRPROC

ANT0Testout 1

RXout 1

RXin 1

Tri-plexer

VSWRPROC

ANT0Testout 0

RXout 0

RXin 0

RXCA1RX0 RX2RX1 RX3

RXCA0 RX3RX1RX2RX0

DC/DCConvert.

PID

CANControl.

TMASignall.

TMADC/DCConvert.

MHASignall.

MHADC/DCConvert.

Module0 Module1

1 ACOM Slot

CAN Bus

RX TXFilter Filter

TX RXFilter Filter

LNA LNA

LNALNA

TXin0(=3)

TXin1(=3)

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Configurations Depending on the use of additional hardware, the MFDUAMCO can be used in: • 2:2 configuration

for combining up to 4 RX and 1 TX paths to each of the 2 antenna connectors. • 4:2 configuration in combination with a HYBRID4 module • 8:2 configuration in combination with a HYBRID4 and a COAMCO8 module

These configurations differ in the number of carriers to be combined to 2 antennas.

MFDUAMCO-HYBRID4 configuration The combination of MDFUMACO and HYBRID4 provides a 4:2 configuration which is used for combining 4 RX and 2 TX paths to each of the two antenna connectors.

Each of the two modules of a HYBRID4 provides two RF input ports and one RF output port to combine the TX paths from several carrier units to one connector.

Figure 14 HYBRID4 block diagram

MFDUAMCO-HYBRID4-COAMCO8 configuration In combination with a COAMCO8 8 TRXs can be connected (see COAMCO8).

For an 8:2 configuration, a COAMCO8 unit is used in conjunction with MFDUAMCO/HYBRID4 in 4:2 configuration. The modules provide two antenna ports and eight TX inputs.

The COAMCO8 combines two additional carriers per module with the two carriers from the output TXout(4) of the HYBRID4, feeds the four carriers back to the input TXin(3) of the MFDUAMCO, and provides four additional RX outputs per module from the cascad-ing output of the MFDUAMCO.

TX0 TX1 TXOUT0

3 dB Hybrid

TX2 TX3 TXOUT1

3 dB Hybrid

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MFDUAMCO losses (TX path) and gains (RX path)The typical combiner TX attenuation was measured for mid band at room temperature. The guaranteed combiner TX attenuation was measured for the full frequency range, taking into account the full temperature range.

MFDUAMCO Type

GSM 850 GSM 900 GSM 1800 GSM 1800

Typic. Guar. Typic. Guar. Typic. Guar. Typic. Guar.

2:2 configuration t.b.d.1)

1) to be done in one of the next issues of this document

1.9 dB 0.7 dB 1.7 dB 0.6 dB 1.7 dB t.b.d. 1.7 dB

4:2 configuration2)

2) 4:2 mode is constructed with MFDUAMCO + HYBRID4

t.b.d. 5.5 dB 4.2 dB 5.3 dB 4.2 dB 5.3 dB t.b.d. 5.3 dB

8:2 configuration3)

3) 8:2 mode is constructed with MFDUAMCO + HYBRID4 + COAMCO8

t.b.d. 9.4 dB t.b.d. 9.2 dB t.b.d. 9.4 dB t.b.d. 9.4 dB

Table 11 MFDUAMCO: Insertion loss

GSM 850, 900 GSM 1800, 1900

RX RXCA RX RXCA

Gain AMCO 20 dB 18.5 dB 22 dB 19.5 dB

+1.3/-1.7 dB with 100% BW

± 1.3 dB with 80% BW

Gain MUCO 2 dB 0.5 dB 3 dB 0.5 dB

+0.8/-1.2 dB with 100% BW


Attenuator range 0-12 dB

Attenuator step size 1 dB

Table 12 MFDUAMCO: Gain (guaranteed)

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5.2 FDUAMCO / DUAMCO The (F)DUAMCO (flexible duplexer amplifier multicoupler) modules contain duplex filters in order to combine the transmit and receive paths to one antenna connector. The receive and transmit part of the duplex filter, respectively, provide the substantial part of the receive and transmit band filtering required by GSM 05.05, 11.21 and JTC J-STD-007.

The type of (F)DUAMCO required depends on the carriers to be combined to the antenna system. Its modules can be assigned to the same cell or to different cells.

g The frequency band of the (F)DUAMCO must correspond to the frequency band of the concerning cell to be served.

Design and function The (F)DUAMCO consists of two (identical) modules and a common part. Each module contains a duplex filter which combines the RX and the TX path together, to be fed to a common antenna.

Each RX path consists of: • the low noise amplifier (LNA), two branches • an attenuator (MUCO mode only) • multiple (4/8) equivalent outputs • a cascade output

The LNA ensures a low system noise figure and consists of two branches. In case of malfunction in one of the amplifiers, the RX gain of the (F)DUAMCO decreases by about 6 dB.

The LNA provides 4/8 outputs of the amplified received signal. These output ports are connected to the corresponding carrier units by jumper cables.

Each TX path consists of: • an isolator for the TX input • an antenna supervision unit (ASU) • for DUAMCO 4:2 and DUAMCO 8:2: hybrid coupler • for FDUAMCOs: jumper for combining mode setting

The isolator for the TX input protects the power amplifiers (PAs) inside the carrier units from each other in order to assure the required inter-modulation suppression.

The (F)DUAMCO detects a VSWR alarm and generates a failure information towards the O&M (CAN bus interface). This information is subdivided in several levels with the following characteristics:

Except in 2:2 mode, a hybrid coupler feeds two TX inputs together to the TX path.

The common part consists of: • a DC/DC converter plus a power distribution unit (PDU) • an O&M unit

The DC/DC converter supplies the (F)DUAMCO itself. The PDU provides the DC power supply and the alarm monitoring of the TMAs. Alarm monitoring is done with a signaling interface between (F)DUAMCO and TMA.

– VSWR < 2– 2 ≤ VSWR ≤ 3– VSWR > 3


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The O&M unit transmits error messages to the COBA via an O&M bus (CAN bus).

Operating modes for (F)DUAMCOThe (F)DUAMCO has two operating modes. During the BTS commissioning, the RX path must be switched into one of these modes (by DIP switches): • AMCO mode • MUCO mode

The high amplifying AMCO mode is used, if the antenna is directly connected to the (F)DUAMCO (without a preamplifier TMA). The (F)DUAMCO gain is around 20/22 dB (see Table 15 and Table 16, also for RXCA gain).

The low amplifying MUCO mode is used in conjunction with a preamplifier (TMA). In the MUCO mode, the gain is reduced to about 2 dB (see Table 15 and Table 16, also for RXCA gain). The gain of the (F)DUAMCO can be adjusted to the cable loss and the TMA gain with the DIP switch. This adjustment is only done once during the installation of the BTS by the service personnel. In case of an installed TMA, the additional gain (which is higher than the cable loss) needs to be adjusted by means of an attenuator inside the (F)DUAMCO.


A DUAMCO 2:2 or 4:2 or FDUAMCO in 2:2 or 4:2 mode has 4 RX outputs per antenna.

A DUAMCO 8:2 or FDUAMCO in 4:2 mode in combination with a COAMCO8 has 8 RX outputs per antenna.

(F)DUAMCO losses (TX path) The typical combiner TX attenuation was measured for mid band at room temperature. The guaranteed combiner TX attenuation was measured for the full frequency range, taking the full temperature range into account.

GSM 900, GSM 1800, GSM 1900

DUAMCO Type Typical Guaranteed

DUAMCO 2:2 1.2 dB 2.5 dB



Table 13 DUAMCO: Insertion loss

GSM 850 GSM 900 GSM 1800, GSM 1900

FDUAMCO Type Typical Guar. Typical Guar. Typical Guar.

in 2:2 mode 1.1 dB 2.4 dB 1.1 dB 2.2 dB 1.2 dB 2.2 dB



(8:2 mode is constructed with FDUAMCO in 4:2 mode +COAMCO8)

Table 14 FDUAMCO: Insertion loss

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(F)DUAMCO gains (RX path)

GSM 850, 900 GSM 1800, 1900

RX RXCA RX RXCA


± 1.5 dB


± 1.0 dB

Attenuator range 0+6 dB ± 0.5 dB

Attenuator step size 1 dB ± 0.3 dB

Table 15 DUAMCO: Gain (guaranteed)

GSM 850, 900 GSM 1800, 1900

RX RXCA RX RXCA


± 1.5 dB with 100% BW



± 1.0 dB with 100% BW




Table 16 FDUAMCO: Gain (guaranteed)

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5.2.1 DUAMCO specials g The DUAMCO x:y are named depending on the number "x" of transmit connectors

fed by the carrier units and the number "y" of antenna connectors.

Different versions of DUAMCO are available: • DUAMCO 2:2 to combine up to 2 carriers (DUAMCO2xxx types) • DUAMCO 4:2 to combine up to 4 carriers (DUAMCO4xxx types) • DUAMCO 8:2 to combine up to 8 carriers (DUAMCO8xxx types)

g DUAMCOs of different versions have a different TX attenuation.

If two carriers shall be combined to the antenna system, the TX output of each carrier unit has to be fed to a TX input of a DUAMCO 2:2. Combining of the two carriers takes place on air.

If more than two carriers shall be combined to the antenna system, a DUAMCO 4:2 or DUAMCO 8:2 is necessary.

The following figures show the block diagrams of the different types of DUAMCO:

Figure 15 DUAMCO 2:2 block diagram

ANT0

Module 0 Module1

RXCA RX

CAN Bu s0

LNA

LNA

TXRX RXRX00 1 2 3

MUCO

AMCO

Mode

Mode

TMADC + Signall.

DCCTRL

O&M

-48 V

BiasTEE

1 ACOM Slot

RX TX

ASU

RXCA RX1

LNA

LNA

TXRX RXRX10 1 2 3

MUCO

AMCO

Mode

Mode

BiasTEE

RX TX

ASU

ANT1

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ANT0

Module 0M odule1

RXCA RX

CAN Bu s0

LNA

LNA

TXRX RX RX00 1 2 3

MUCO

AMCO

Mode

Mode

-48 V

BiasTEE

1 ACOM Slot

RX TX

ASU

RXCA RX1

RX RX RX0 1 2 3

BiasTEE

RX TX

ASU

ANT1

Coupler

TX1

TX0

Coupler

TX1

LNA

LNA

MUCO

AMCO

Mode

Mode

TMADC + Signall.

DCCTRL

O&M

ANT0

Module 0 Module 1

RXCA

CAN Bu s0

LNA

LNA

TX0

MUCO

AMCO

Mode

Mode

BiasTEE

RX TX

ASU

RXCA1

BiasTEE

RX TX

ASU

ANT1

Coupler

LNA

LNA

MUCO

AMCO

Mode

Mode

TX1

TX2

TX3

Coupler

TX1

TX0

TX2

TX3

TMADC + Signall.

DCCTRL

O&M

RX RX

2 ACOM Slots

-48 V0 7 0RXRX

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5.2.2 FDUAMCO specials The FDUAMCO is the successor of the DUAMCO.

Maximum 4 TRXs can be connected to one FDUAMCO. In combination with a COAMCO8, 8 TRXs can be connected (see COAMCO8).

Each half of the FDUAMCO can be configured in "One-To-One" mode (like DUAMCO 2:2) and "Two-To-One" mode (like DUAMCO 4:2) by means of jumper cables, which insert the 3 dB hybrid or not. "One-To-One" means that the hybrid is not used, "Two-To-One" means that the hybrid is used.

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The following figure shows the block diagram of a FDUAMCO:

Figure 18 FDUAMCO block diagram

Tri-plexer

VSWRPROC

ANT1Testout1

RXout1

RXin1

Tri-plexer

VSWRPROC

ANT0Testout0

RXout0

RXin0

RXCA1RX0 RX2RX1 RX3

RXCA0 RX3RX1RX2RX0

TMASignall.

TMADC/DCConvert.

DC/DCConvert.

PID

CANControl.

Module0 Module1

1 ACOM Slot

TX1 T X0 TX1 T X02 1 4 3 2 1 4 3

3 dB Hybrid3 dB Hybrid

CAN Bu s

RX TXFilter Filter

TX RXFilter Filter

LNA LNA

LNALNA

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5.3 MDUX g MDUX and HYBRID6 modules are available for BTSs from BR9.0 onward.

The MDUX (multiple duplexer) offers features like individually configurable antenna paths while retaining full backwards compatibility. With MDUX, mixed 2:2 and 4:2 con-figurations can be configured within the BTS.

The maximum configuration for an MDUX is a 6:6 configuration, i.e. 6 antennas with 1 carrier each (6 carriers in total). Up to 4 RX and 2 TX paths were combined to 1 antenna connector. For each MDUX, up to 2 HYBRID6 modules (see section HYBRID6) are available to change the standard 6:6 configuration to a 12:6 configuration.

The TX output of carrier unit is connected directly to the TXin connector.

The MDUX supports one frequency band.

Two MDUX modules of different frequency bands can be installed into the same base or extension rack/shelter for dual-band applications.

g The frequency band of the combiner must correspond to the frequency band of the installed carrier units.

An MDUX unit provides 6 antenna ports and can support up to 6 cells with combining on air. Depending on the usage of HYBRID6 modules, the MDUX is used for 6 antennas with 1 or 2 carriers each, i.e. for 6 or 12 carriers in total (see section MDUX-HYBRID6 con-figurations).

Up to 2 MDUX modules and up to 4 HYBRID6 modules can be installed in each base/extension1/extension2 rack/shelter.

MDUX/HYBRID6 units can be configured together with other combiners in the same base/extension rack/shelter (e.g. (F)DUAMCO, DIAMCO).

The MDUX consists of 6 (identical) RF parts and a common part.

EachRF part contains a duplex filter which pairs the RX and the TX path, to be fed to a common antenna. • a transmit path with 1 TX input • a receive path with 4 RX outputs • a cascade RX output • a low noise amplifier (LNA) for the receive signal • an antenna port (TX/RX)

Each antenna port can be configured individually to different cells.

With 4 RX outputs per module, an MDUX unit can support e.g. RX diversity for 2 TX signals per antenna port.

The common part consists of: • a DC/DC converter plus a power distribution unit (PDU) • an O&M interface

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Figure 19 MDUX block diagram

The installation of an MDUX needs two horizontal adjacent ACOM slots.

The TX input port can either be used to connect one TRX directly or alternatively to receive the signal from a 3 dB hybrid (using one out of six 3 dB hybrids of the module HYBRID6, see below). The 3 dB hybrid itself combines the TX signals of 2 TRXs oper-ating in the same frequency band.

The 4 RX ports can be used to connect the RX paths of 2 TRXs and the RX-diversity paths of 2 other TRXs to one duplexer. So the MDUX on the receive side is ready for doing a 1:1 or 2:1 combining per duplexer – the duplexers are prepared to implement RX diversity together with a second duplexer.

The 6 duplexers can be freely assigned to different cells as required at the particular BTS site. This means that a cell is built using at least one duplexer in case diversity is not required or at least 2 duplexers in case diversity is required.

The number of duplexers used per cell depends on: • Diversity required or not • Number of TRXs in the cell • Usage of hybrid modules

In case a TMA is needed, a low gain TMA with external BIAS-T and power supply must be used.

A discrete alarm line instead of the CAN-bus is used to indicate a failure of the MDUX-internal DC/DC converter. The alarm line is connected to the ACTC module. The MDUX does not provide VSWR supervision and LNA alarms.

RX TXFilter Filter

RX0...RX3

DC/DCConvert.

LNA

RX TXFilter Filter

LNA

RX TXFilter Filter

LNA

ANT0

Module 0

ANT1

Module 1

ANT2

Module 2

ANT3

Module 3

ANT4

Module 4

ANT5

Module 5

TX0 RX0...RX3RX0...RX3

RX TXFilter Filter

RX0...RX3

LNA

RX TXFilter Filter

LNA

RX TXFilter Filter

LNA

RX0...RX3RX0...RX3TX1 TX2 TX3 TX4 TX5RXCA RXCA RXCA RXCA RXCARXCA

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HYBRID6 Up to 2 HYBRID6 modules (hybrid extension module for MDUX) can be installed in com-bination with each MDUX used to change the standard 6:6 configuration to a 12:6 con-figuration.

The HYBRID6 module consists of 3 identical 3 dB hybrid units for combining 2 TX signals each. In combination with an MDUX, 2 TRXs can be combined to one antenna.

As the module is purely passive, it does not require DC power supply and does not require supervision and alarming.

Figure 20 HYBRID6 block diagram

The HYBRID6 module can be inserted either into one ACOM slot or into two MUCO slots.

MDUX-HYBRID6 configurations The maximum configuration for a single MDUX is a 6:6 configuration, i.e. 6 antennas with 1 carrier each (6 carriers in total). Up to 4 RX and 2 TX paths were combined to 1 antenna connector. The TX output of carrier unit is connected directly to the TXin con-nector.

The maximum configuration for an MDUX with 2 HYBRID6 modules is a 12:6 configu-ration, i.e. 6 antennas with 2 carriers each (12 carriers with 6 FlexCUs). Up to 4 RX and 2 TX paths are combined to 1 antenna connector.For this configuration, the TX inputs are TX0 and TX1 connectors at the HYBRID6 units and the TXout connectors of the HYBRID6 units are jumpered with TXin at MDUX.

TX0 TX1 TXOUT0

3 dB Hybrid

TX2 TX3 TXOUT1

3 dB Hybrid

TX4 TX5 TXOUT2

3 dB Hybrid

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Figure 21 MDUX-HYBRID6 configuration

The MDUX in combination with HYBRID6 can be used for the following cell configura-tions:

• 3 cells with diversity, each cell can have between 1 and 4 TRXs; In case of 1 or 2 TRXs no 3dB hybrid is needed. In case of 3 or 4 TRXs 3dB hybrids are needed.

• 6 cells without diversity, each cell can have 1 or 2 TRXs; In case of 2 TRXs a 3dB hybrid is needed.

• Any mixture of the first two scenarios that does not require more than 6 duplexers or 3dB hybrids.

The cabling between the MDUX and the HYBRID6 consists of standard RF cables that are also used for the TX cabling between CUs and combiners.

MDUX-HYBRID6 configurations with COAMCO Each MDUX module provides an RX cascading output to support configurations with COAMCO modules.

One MDUX module can be configured with up to 2 COAMCO modules. The maximum cell configuration is 4 carriers to 1 antenna port.

Within BS-240 II / 240 II B / 241 II / 241 II B base/extension racks/shelters, a cell config-uration 6 / 6 / 4 can be achieved with one MDUX, 2 COAMCO and 2 HYBRID6 modules (16 TRXs with 8 FlexCUs).

Module 0

RX0 RX3 TXin

RX TX

Module 1

TXin

RX TX

MDUX

...

Module 2

TXin

RX TX

Module 3

TXin

RX TX

Module 4

TXin

RX TX

Module 5

TXin

RX TX

TX0 TX1

TXout

TX0 TX1 TX0 TX1

TXout TXout

HYBRID6

TX0 TX1

TXout

TX0 TX1 TX0 TX1

TXout TXout

HYBRID6

ANT0 ANT1 ANT2 ANT3 ANT4 ANT5

RXCA RX0 RX3... RXCA RX0 RX3... RXCA RX0 RX3... RXCA RX0 RX3... RXCA RX0 RX3... RXCA

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MDUX loss (TX path) The typical combiner TX loss (TX attenuation) is defined for mid band at room temper-ature. The guaranteed combiner TX loss is defined for the full frequency range, taking into account the full temperature range.

MDUX gain (RX path) The combiner RX gain depends on the frequency band.

GSM 850 GSM 900 GSM 1800 GSM 1900

MDUX Type Typic. Guar. Typic. Guar. Typic. Guar. Typic. Guar.

2:2 configuration t.b.d.1)


1.9 dB t.b.d. 1.7 dB t.b.d. 1.7 dB t.b.d. 1.7 dB

4:2 configura-tion2)

2) 4:2 mode is constructed with MDUX + HYBRID6


8:2 configura-tion3)

3) 8:2 mode is constructed with MDUX + HYBRID6 + COAMCO8


Table 17 MDUX: Insertion loss

GSM 900 GSM 1800, 1900

RX RXCA RX RXCA

MDUX 20 dB 18.5 dB 22 dB 19.5 dB

+1.3/-1.7

Table 18 MDUX: Gain

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5.4 COAMCO8 The COAMCO8 (co-amplifier multicoupler) can be used in combination with an FDUAMCO or an MFDUAMCO or an MDUX.

The combinations with COAMCO8 provide an 8:2 configuration by including 4 additional carriers (TRXs):

• with FDUAMCO in 4:2 mode (see Figure 23)

• with MFDUAMCO and HYBRID4 (see Figure 24)

• with MDUX and HYBRID6

A COAMCO8 unit consists of two identical modules, containing a transmit and a receive path each. Each module of the COAMCO8 combines two additional carriers with the two TX inputs of the MFDUAMCO or FDUAMCO.

The COAMCO8 combines 8 carrier units in total, either in combination with FDUAMCO (jumpered in 4:2 mode) or in combination with MFDUAMCO/HYBRID4.

Figure 22 COAMCO8 block diagram

The RX cascading outputs of the MFDUAMCO/FDUAMCO provide the RX input signals for the additional 4 RX outputs of the COAMCO8.

RXCA1RX0 RX2RX1 RX3

RXCA0 RX3RX1RX2RX0

DC/DCConvert.

TX0 TX1 4 3

3 dB HybridsAMP AMP

TX2 TX3 4 3

3 dB Hybrids

RXCA0 in RXCA1 in

Module0 Module1

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Figure 23 COAMCO8 with FDUAMCO in 4:2 Mode (= 8:2 Mode)

RX TX

X

RX TX

XCOAMCO8FDUAMCO in 4:2 mode

RX0 RX3.. .

TX4TX5

RX0 RX3... RX4 RX7.. . RX4 RX7...

+

RX cascading outputTX cascading outputTX input FDUAMCO = TX output COAMCO8

TX6TX7

TX2TX3

TX0TX1

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Combination with MFDUAMCO and HYBRID4

Figure 24 COAMCO8 with MFDUAMCO and HYBRID4 (8/0/0)

X X

COAMCO8MFDUAMCO

RX0 RX3...

TX4TX5

RX0 RX3... RX4 RX7.. . RX4 RX7...

+

RX cascading outputTX cascading output from HYBRID4TX input MFDUAMCO = TX output COAMCO8

TX6TX7

RX TXRX TX

TX0 TX1

TXout

HYBRID4+

TX2 TX3

TXout

main div

ANT0 ANT1

HYBRID4

COAMCO8MFDUAMCO

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5.5 DIAMCO The DIAMCO (dual integrated amplifier multicoupler) is required for the RX signal path in FICOM configurations and special DUAMCO configurations.

The DIAMCO is required to implement two cells/sectors with RX diversity within one base or extension rack/shelter. The DIAMCO distributes the RX and RX diversity signals to up to 8 TRXs. Therefore, it filters and distributes the received signals to the carrier units in one rack/shelter. The receiving filters provide the substantial part of the receive band filtering required by GSM 05.05, 11.21 and JTC J-STD-007.

g The frequency band of the DIAMCO must correspond to the frequency band of the concerning cell to be served.

Design and functionThe DIAMCO consists of a common part and two identical, independent modules which can be assigned to the same cell or to different cells as long as they operate in the same frequency band.

Each module contains: • an RX filter • the low noise amplifier (LNA) • an attenuator • multiple (8) equivalent outputs • a cascade output

The LNA ensures a low system noise figure and consists of two branches. In case of malfunction in one of the amplifiers, the RX gain of the DIAMCO decreases by about 6 dB.

A DIAMCO has 8 RX outputs per antenna to distribute the received band to the carrier units.

The common part consists of: • a DC/DC converter plus a power distribution unit (PDU) for two TMAs • an O&M interface

The DC/DC converter supplies the DIAMCO itself. The functionality of a PDU for two TMAs by means of an antenna feeder cable is integrated. This is the DC power supply and the alarm monitoring of the TMAs. Alarm monitoring is done with a signaling inter-face between DIAMCO and TMA. This interface is identical to the interface between (F)DUAMCO and TMA.

The O&M interface transmits error messages to the BTS core via an O&M bus (CAN bus).

Due to the fact that TMA status information is available for the DIAMCO processor, the DIAMCO itself has to switch the RX mode according to the TMA status. Each TMA can be switched on or off by a separate switch.

Operating modes for DIAMCOThe DIAMCO RX amplifier has two operating modes, depending on the existence of TMAs: AMCO mode and MUCO mode.

During the BTS commissioning, the RX path must be switched into one of these modes: • AMCO mode • MUCO mode

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The high amplifying AMCO mode is used if the antenna is directly connected to the DIAMCO (without a preamplifier, e.g. TMA). The DIAMCO gain is around 20/22 dB (see Table 19, also for RXCA gain).

The low amplifying MUCO mode is used in conjunction with a preamplifier (TMA). In the MUCO mode, the gain is reduced to about 2 dB. The gain of the DIAMCO can be adjusted to the cable loss and the TMA gain with the DIP switch. This adjustment is only done once during the installation of the BTS by the service personnel. In case of an installed TMA, the additional gain (which is higher than the cable loss) needs to be adjusted by means of an attenuator inside the DIAMCO.


When cascading DIAMCOs, the first DIAMCO works in the AMCO mode and the follow-ing DIAMCO in the MUCO mode.

The following figure shows the block diagram of a DIAMCO:

Figure 25 DIAMCO block diagram

DIAMCO gains (RX path)

ANT0

Module 0 Module 1

RXCA RX

CAN Bus

0

RX

LNA

LNA

RX RX RX RX0 1 2 3 4

RX RX RX 5 6 7

MUCO

AMCO

Mode

Mode

ANT1

RXCA RX1

RX

LNA

LNA

RX RX RX RX0 1 2 3 4

RX RX RX5 6 7

MUCO

AMCO

Mode

Mode

TMADC + Signall.

DCCTRL

O&M

-48 V

DIAMCO

BiasTEE

BiasTEE

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GSM 850, 900 GSM 1800, 1900

RX RXCA RX RXCA


± 1.5 dB


±1.0 dB



Table 19 DIAMCO: Gain (guaranteed)

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5.6 Antenna line equipment MHA/TMA The MHA (mast head amplifier) and TMA (tower mounted amplifier) are optional modules that connect the antenna with the BTS in order to amplify the receive signal and pass through the transmit signal.

The configuration with MHA or TMA is advantageous because of the compensation of the antenna feeder cable losses.

The TMA contains two duplex filters, each on one RF connector, to separate and combine the receive and transmit path inside the TMA.

In cell configuration with an MHA or TMA, the true system RX sensitivity is guaranteed at the antenna, independent of the antenna feeder cable attenuation.

One MHA is needed for two RX paths of MFDUAMCO/FICOM6.

One single TMA (STMA) is needed for each RX path of (F)DUAMCO/DIAMCO. One dual TMA (DTMA) is needed for two RX paths of (F)DUAMCO/DIAMCO.

The FICOM6 supports 3rd party TMA units in current window mode, no legacy TMA units.

When MHA/TMA is used, the MFDUAMCO/FICOM6 or (F)DUAMCO/DIAMCO, respecitvely, works in the MUCO (multicoupler) mode, see Operating modes for FICOM6, Operating modes for MFDUAMCO, Operating modes for (F)DUAMCO, or Operating modes for DIAMCO.

The DC power for the MHA/TMA is supplied by the MHA/TMA DC power supply within the (M)(F)DUAMCO.

The encoder/decoder of the MHA/TMA signaling unit generates a separate alarm for each MH/A/TMA by monitoring the DC current consumption of each unit.

Different types of MHA for different frequency bands exist: • MDTA (850 MHz) • MDGA (E-GSM, 900 MHz) • MDDA (1800 MHz) • MDPA (1900 MHz)

Two kinds of TMA exist: the "single TMA" and the "dual TMA".

The single TMA (types TMA and STMA) consists of: • two duplex filters to split RX and TX paths • the low noise amplifier (LNA) to amplify RX signals • "Fail Safe Functionality" to ensure operation in case of faulty LNA

A dual TMA (type DTMA) consists of two identical, independent single TMA modules. Two (S)TMAs may be replaced by one DTMA unit of the same frequency band.

The following figures show the block diagrams of the TMA single and dual and MHA:

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Figure 26 TMA (single) block diagram

Figure 27 MHA / TMA (dual) block diagram (RET only at MHA)

ANT

IN

COM

OUT

Tri-plexer

RXFilter 2

RX TXFilter 1 Filter

FailSafeSwitch

TMA TMA

ANT

IN

COM

OUT

Tri-plexer

RXFilter 2


ANT

IN

COM

OUT

Tri-plexer

RXFilter 2


RET

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MHA parameters

Parameter MDTA(850 MHz)

MDGA(900 MHz)

MDDA(1800 MHz)

MDPA(1900 MHz)

-40°C - +55°C(-40°F - +131°F)

TX insertion loss 0.8 dB max 0.8 dB max

Gain (Ant-Com) 32 dB ± 1.0 dB 12/33 dB ± 1.0 dB

Noise figure (Ant-Com) 2.2 dB max

Attenuation failsafe ≤ 4.0 dB

Return loss (RX) 16.0 dB min 18.0 dB min

Return loss (TX) 18.0 dB min

Input P1dB ≥ 32 - 7 dBm min ≥ 32 - 10 dBm min

IIP3 32 + 5.2 dBm ≥ 32 + 3 dBm min

Operational current range 300 - 750 mA 300 - 750 mA (high gain)

100 - 190 mA (low gain)

Operational voltage range 10 - 30 V 10 - 30 V

Power RET port 17 W max 15 W max

Operational power range 10 W max 10 W max (high gain)

4 W max (low gain)

Intermodulation ANT port

-116 dB (Rx band 3rd order; 2 x Tx carrier at 43 dBm)

-115 dB (Rx band 3rd order; 2 x Tx carrier at 43 dBm)

Table 20 MHA: electrical parameters

Parameter MDTA(850 MHz)

MDGA(900 MHz)

MDDA(1800 MHz)

MDPA(1900 MHz)

-40°C - +55°C(-40°F - +131°F)

Size (W x H x D) 250 mm x 350 mm x 100 mm 210 mm x 295 mm x 65 mm

Weight approx. 9 kg approx. 5 kg

Antenna connector 7/16

BTS connector 7/16

Table 21 MHA: mechanical parameters

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TMA parameters

Parameter Single TMA:GSM 850, GSM 900

Double TMA:GSM 1800, GSM 1900

-25°C - +45°C(-13°F - +113°F)

-40°C - +65°C(-49°F - +149°F)

-25°C - +45°C(-13°F - +113°F)

-40°C - +65°C(-49°F - +149°F)

Insertion loss 0.8 dB (0.5 dB typical)

Gain (Ant-Com) 24 dB ± 2.0 dB 24 dB ± 2.5 dB 24 dB ± 2.0 dB 24 dB ± 2.5 dB

Noise figure (Ant-Com) ≤ 2.2 dB ≤ 3.0 dB ≤ 2.2 dB ≤ 3.0 dB

Attenuation failsafe ≤ 4.0 dB ≤ 4.2 dB ≤ 4.0 dB ≤ 4.2 dB

P1dB (Com) ≥ 18 dBm ≥ 12 dBm

IP3 (Com) ≥ 28 dBm

Current consumption ≤ 500 mA ( ≤ 6 W) ≤ 1 A ( ≤ 12 W)

Nominal voltage 12 V ± 8%

Table 22 TMA: electrical parameters (guaranteed)

Parameter Single TMA:GSM 850, GSM 900

Double TMA:GSM 1800, GSM 1900

-25°C - +45°C(-13°F - +113°F)

-40°C - +65°C(-49°F - +149°F)

-25°C - +45°C(-13°F - +113°F)

-40°C - +65°C(-49°F - +149°F)

Size (W x H x D) 175 mm x 282 mm x 95 mm(6.9” x 11” x 3.7”)

345 mm x 235 mm x 85 mm(13.6” x 9.3” x 3.4”)

Weight approx. 6 kg(approx. 13.2 lbs)

approx. 10 kg(approx. 22.0 lbs)

Antenna connector 7/16

BTS connector 7/16

Table 23 TMA: mechanical parameters (guaranteed)

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5.7 FICOM6 The FICOM6 (filter combiner with 6 tunable narrowband filters) is the successor of the FICOM base and expansion modules and provides the same functionality that an MFDUAMCO module has.

The installation of a FICOM6 needs two horizontal adjacent ACOM slots.

RF power combining / tuning modesThe low loss power addition is carried out by combining the outputs of remote tunable narrowband filters (TNFs) inside the FICOM6. These TNFs are remotely tuned to the channel frequency of the corresponding carrier. It is possible to combine a minimum of two and a maximum of six TX signals in each FICOM6.

A TNF is first coarse tuned to the desired channel. If RF power is supplied to the TNF, it automatically performs a fine tuning to ensure the best RF performance. With this automatic tuning process, the drift of the passband filter center frequency is compen-sated.

Therefore, the FICOM6 can only be used with baseband frequency hopping, as retuning of the TNF frequency requires up to 5 seconds.

For a large number of carriers (six and higher), baseband frequency hopping has only a negligible disadvantage compared to synthesizer frequency hopping.

Design and function The FICOM6 consists of two modules and a common part. One of the modules (module 1) contains an RX path. The other module (module 0) contains a duplex filter to be fed to a common antenna. The duplex filter combines the RX and the TX paths together. The gain of the receive path is switchable to an amplifier multicoupler (AMCO) or a multicoupler (MUCO) configuration (see below Operating modes for FICOM6).

Each RX path consists of: • the low noise amplifier (LNA), two branches • an attenuator (for MUCO and AMCO mode) • six equivalent outputs • a cascade output

The LNA ensures a low system noise figure and consists of two branches. In case of malfunction in one of the amplifiers, the RX gain of the FICOM6 decreases by about 6 dB.

The LNA provides six outputs of the amplified received signal. These output ports are connected to the corresponding carrier units by jumper cables.

The RX signal from main antenna port ANT0 (see Figure 28) is passed through to the duplexer, where the RX bandpass filter section selects the uplink band signal. Normally, this signal is routed to the LNA over a jumper line connected at the front plate of the module (RXin, RXout). This bridge is only omitted when the BTS needs a simplex RX input, because the RX signal is not provided directly by the antenna but by an RX signal distribution unit, e.g. another co-sited BTS or some 3rd party RX multicoupler.

LNA1 is optimized for low noise figure. A failure of LNA1 generates a major alarm in the O&M system. The attenuator can be adjusted over a range of 12 dB (in steps of 1 dB) to set the total gain of the RX path from antenna port to TRX input port to the nominal value. The attenuator works in both modes (AMCO and MUCO) to allow correct gain

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setting for a great variety of antenna system configurations. The activation of the by-pass switch and the adjustment of the attenuator can be done via DIP switches or O&M commands.

LNA2 is optimized for high output power and linearity to direct up to 6 RX outputs to the TRX units through the power splitter and a further cascading output (RXCA). LNA2 is a two-branch amplifier for enhanced reliability. A failure of one branch of LNA2 generates a minor alarm, and a failure of both branches of LNA2 generates a major alarm in the O&M system.

The RX path from antenna port ANT1 (RX diversity) is equal to the main RX path with the following exceptions: The antenna port ANT1 is directly connected with the RX bandpass filter, without any duplexer. The RXin/RXout connectors are not needed because the antenna port ANT1 is a simplex port only. The RX output ports direct the diversity RX inputs to up to 6 TRXs.

The TX path consists of: • six tunable narrowband filters (TNFs) • an isolator for the TX input • an antenna supervision unit (ASU) • jumpers for combining mode setting

The isolator for the TX input protects the power amplifiers (PAs) inside the carrier units from each other in order to assure the required intermodulation suppression.

The TX signals from up to 6 TRXs, each operating on a different carrier frequency, are passed through the TNFs. The filter passband is just wide enough for a single GSM radio frequency channel and its center frequency is tuned by an electric motor under control of the micro controller of the module. The TNF outputs are summed and routed to the duplexer. The duplexer passes the composite TX signal through its TX bandpass filter section towards the antenna port. The DUBIAS allows coupling DC supply current and controlling signal on the RF line, which are needed to control active antenna-near devices like MHA and RET. Finally, the VSWR sensor measures the VSWR on the feed line and outputs the composite TX signal to the main antenna port ANT0.

The FICOM6 detects a VSWR alarm and generates a failure information towards the O&M (CAN bus interface). This information is subdivided in several levels with the fol-lowing characteristics:

The common part consists of: • a DC/DC converter plus a power distribution unit (PDU) • an O&M unit

The DC/DC converter supplies the FICOM6 itself. The PDU provides the DC power supply and the alarm monitoring of the MHAs. Alarm monitoring is done with a signaling interface between FICOM6 and MHA.

The O&M unit transmits error messages to the COBA via a CAN bus.

– VSWR < 2– 2 ≤ VSWR ≤ 3– VSWR > 3


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Operating modes for FICOM6 The FICOM6 has two operating modes. During the BTS commissioning, the RX path must be switched into one of these modes (by DIP switches): • AMCO mode • MUCO mode

The high amplifying AMCO mode is used if the antenna is directly connected to the FICOM6 (without a preamplifier MHA/TMA). The FICOM6 gain is about 20/22 dB (see Table 25, also for RXCA gain).

The low amplifying MUCO mode is used in case of cascading the FICOM6 with a pre-amplifier MHA or TMA. The FICOM6 supports MHA and 3rd party TMA units in current window mode, no legacy TMA units. A built-in attenuator provides a constant gain between MHA/TMA and FICOM6, independent of the cable loss. The power supply and the signaling of the MHA/TMA are provided by the FICOM6 via triplexer at the antenna outputs. The gain is reduced to about 2 dB (see Table 25, also for RXCA gain). The gain of the FICOM6 can be matched to the cable loss and the MHA/TMA gain with the DIP switch. This adjustment is only done once during the installation of the BTS by the service per-sonnel.

The gain adjustment is performed at commissioning by setting the attenuator in FICOM6 by dip switches, or, from BR10 onward, by using the appropriate configuration command in the O&M system. See the Commissioning manuals for details.


The following features of O&M support are available from BR10 onward:

• RX gain adjustment is configurable via LMT and remote via RC; even missing or wrong DIP switch settings can be corrected from remote. In this case, the LED (TMA) is permanently green flashing.

• VSWR thresholds for warning and alarming is configurable via O&M command.

• 3rd party TMAs (low gain, no fault signaling) are supported by O&M software. The RX amplifier mode and the TMA power supply can be enabled/disabled indepen-dently, allowing AMCO mode and TMA power supply in parallel.

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The following figure shows the block diagram of a FICOM6:

Figure 28 FICOM6 block diagram

ANT0 2 ACOM Slots ANT1Testout

Module0 Module1

TX0

LNA1 LNA1

LNA2 LNA2

RXout

RXin

CAN Bus

6 TNFs

RX0 ... RX5 TX1 TX2 TX3 TX4 TX5RXCA0 RX0 ... RX5 RXCA1

VSWRPROC

Tri-plexer

RXFilter0

TXFilter

Tri-plexer

RXFilter1

TMASignall.

TMADC/DC

Convert.

CANControl.

PID

DC/DCConvert.

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FICOM6 losses (TX path) and gains (RX path)The typical combiner TX attenuation was measured for mid band at room temperature. The guaranteed combiner TX attenuation was measured for the full frequency range, taking into account the full temperature range. The measures were taken with 6 carriers with a minimum carrier separation (spacing) of 600 kHz.

g With lower spacing, e.g. 400 kHz, the RX behavior of FICOM6 is worse (about 1.5 dB more insertion loss which equals to 4.5 dB).

GSM 900 GSM 1800

FICOM6 Typical Guaranteed Typical Guaranteed

80% Bandwidth t.b.d. 1)


3.0 dB 2)

2) preliminary value, without guarantee

t.b.d. 3.0 dB 2)

100% Bandwidth t.b.d. 3.5 dB 2) t.b.d. 3.5 dB 2)

Table 24 FICOM6: Insertion loss

GSM 900 GSM 1800

RX RXCA RX RXCA


+1.3/-1.7 dB with 100% BW



+0.8/-1.2 dB with 100% BW


Attenuator range 0-12 dB

Attenuator step size 1 dB

Table 25 FICOM6: Gain (guaranteed)

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5.8 FICOMWith the FICOM, it is possible to combine up to 8 signals to one antenna. For the uplink direction (RX), the DIAMCO has to be used to filter and distribute the received signals to the carrier units. The FICOM consists of remote tunable narrowband filters (TNF).

The advantage of this filter combining technique is the very low insertion loss for up to 8 TX signals combined to one antenna.

In principle, the FICOM offers lightning protection at the RF output connector and the following main RF functions:

• RF power combining • Transmitter spurious signal suppression • Isolation between inputs • Isolation output to input

RF power combining / tuning modesThe low loss power addition is carried out by combining the outputs of TNFs inside the FICOM. These TNFs are remotely tuned to the channel frequency of the corresponding carrier. It is possible to combine a minimum of 2 and a maximum of 8 TX signals by adding "expansion modules" to the "base module", see section FICOM Modularity.

A TNF is first coarse tuned to the desired channel. If RF power is supplied to the TNF, it automatically performs a fine tuning to ensure the best RF performance. With this automatic tuning process, the drift of the passband filter center frequency is compen-sated.

Therefore, the FICOM can only be used with baseband frequency hopping, as retuning of the TNF frequency requires up to 5 seconds.

For a large number of carriers (six and higher), baseband frequency hopping has only a negligible disadvantage compared to synthesizer frequency hopping.

FICOM modularityThe FICOM functions are carried out by two types of modules: • Base module 2:1 • Expansion module 2:1

One base module is needed per cell.

The base module is able to combine two carriers to one antenna. For more than two carriers per cell, the base module can be expanded by expansion module(s).

An expansion module can combine up to two additional carriers to the same antenna.

Altogether, one base module can be expanded by three expansion modules, which means 8 carriers belonging to the same cell can be connected to the same antenna.

The different modules are connected together by a special RF connection cable.

The base module has an output stage for the combined TX signal of all base and expan-sion modules (antenna output with 7/16 connector). Additionally, there is a test output at every base module. The base module reports the VSWR status.

In case of an odd number of carriers in one cell, only one half of the expansion module 2:1 is used. For this application, one TX port remains open.

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Figure 29 FICOM 8:1 block diagram

FICOM losses (TX path)

g Name convention for FICOMs:The first part gives the number of carriers (= 2 * number of modules), the second part gives the minimum frequency distance between these carriers in kHz. For example:FICOM4/600 means 4 carriers with a minimum frequency distance of 600 kHz.

TNF TNFESN

VS WRsupervision

TNF TNFESN

TNF TNFESN

TNF TNFESN

Base 2:1 Exp 2:1 Exp 2:1 Exp 2:1

CTRLDC interf.

CTRLDC interf.

CTRLDC interf.

CTRLDC interf.

CAN Bu s CAN Bu s CAN Bu s CAN BusTX0 TX1 TX0 TX1 TX0 TX1 TX0 TX1

GSM 900 GSM 1800

FICOM Type Typical Guaranteed Typical Guaranteed

FICOM 2/600 2.3 dB 2.7 dB 2.5 dB 3.7 dB

FICOM 4/600 2.5 dB 3.2 dB 3.0 dB 4.2 dB

FICOM 6/800 3.0 dB 3.7 dB 3.5 dB 4.8 dB

FICOM 8/800 3.5 dB 4.2 dB 4.0 dB 5.8 dB

Table 26 FICOM: Insertion loss

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5.9 HPDUThe HPDU (high power duplexer) combines the TX and the RX paths into one antenna, in order to minimize the number of antennas when a FICOM is used. The HPDU contains a duplex filter for the transmit frequency band and for the receive frequency band, but no LNA in the RX path.

If the TMA is used together with a HPDU, the BIAS-T (DUBIAS) for powering and sig-naling the TMA is required. For the main RX path, one HPDU per cell is installed. For diversity operation, a second receive path has to be installed.

In one base or extension rack/shelter, one or two HPDUs can be installed. Figure 30 shows the standard configuration for one cell using HPDU, FICOM and DIAMCO for up to 8 carriers in one rack/shelter.

Figure 30 HPDU 8 TRXs

BIAS-T (DUBIAS)If the TMA is to be used together with a HPDU, a BIAS-T (DUBIAS) for powering and signaling of the TMA is required.

Figure 31 HPDU 8 TRXs with DUBIAS and TMA

TX RX

HPDU

FICOM DIAMCO

RX

TX RX

TX TX0 7

RX0

... RXdiv ... RXdiv... RX7 70

TMA TMA

DUBIAS

HPDU

FICOM

TX

DIAMCO

0TX7

RX0

RX7.. ... .

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HPDU losses (TX path)

5.10 DiplexerThe diplexer gives the possibility to use one antenna feeder cable for both GSM 850 with GSM 1900 and GSM 900 with GSM 1800 frequencies. One diplexer is needed to combine the two different frequencies at the BTS side and the other one to separate the frequencies near the antennas.

The diplexer offers the possibility to reduce the number of antenna feeder cables in all cases where GSM 900 and GSM 1800, GSM 1900 or GSM 850 and GSM 1900 feeder cables have to be installed in parallel. Example: An existing GSM 900 network will be extended by a GSM 1800 or GSM 1900 network to implement a dual band network.

g The diplexer is a commodity product, which is available from many filter manufac-turers.

Figure 32 Configuration with diplexer (example)

GSM 900 GSM 1800

Typical Guaranteed Typical Guaranteed

HPDU 0.4 dB 0.6 dB 0.5 dB 0.75 dB

Table 27 HPDU: Insertion loss

Antenna Dual Band

900 MHz1800 MHz

Diplexer

DUAMCO 2:2(1800 MHz)

DUAMCO 2:2(900 MHz)

Diplexer

f1 f2

f1 + f2

f1 f2

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Cell configurations

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6 Cell configurations The following figures show an assortment of possible cell configurations.

– 3/3/2 with duplex combining (see Figure 33 and Figure 34)

– 8/0/0 with filter and duplex combining (see Figure 35 and Figure 36)

– 2/2/2 with duplex combining (see Figure 37)

– FDUAMCO 2:2 and 4:2 configuration (see Figure 38)

– FDUAMCO/COAMCO8 8:2 configuration (see Figure 39)

– Single-cell (11...16,0,0): FICOMs, DIAMCOs and HPDUs in 2 racks (see Figure 40)

Figure 33 Multi-cell (3,3,2): with 3 DUAMCO 4:2

RX TX

DUAMCO 4:2

CELL 0

Coupler

RX TX

Coupler

TRX0 TRX1 TRX2

RX TX

DUAMCO 4:2

CELL 1

Coupler

RX TX

Coupler

TRX3 TRX4 TRX5

RX TX

DUAMCO 4:2

CELL 2

Coupler

RX TX

Coupler

TRX6 TRX7

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Figure 34 Multi-cell (3,3,2): with 2 DUAMCO 4:2 and 1 DUAMCO 2:2

Figure 35 Single-cell (8,0,0): with FICOM and DIAMCO

RX TX

DUAMCO 4:2

CELL 0

Coupler

RX TX

Coupler

TRX0 TRX1 TRX2

RX TX

DUAMCO 4:2

CELL 1

Coupler

RX TX

Coupler

TRX3 TRX4 TRX5

DUAMCO 2:2

CELL 2

RX TX

TRX7TRX6

RX TX

TRX4 TRX5 TRX6 TRX7TRX2 TRX3

FICOMBase

Module

FICOMExpansion

Module

TX

FICOMExpansion

Module

FICOMExpansion

Module

TRX0 TRX1

RX RX

DIAMCO DIAMCO

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Figure 36 Single-cell (8,0,0): with 2 DUAMCO 4:2

Figure 37 Multi-cell (2,2,2): with 3 DUAMCO 2:2

RX TX

DUAMCO 4:2

CELL 0

Coupler

RX TX

Coupler

TRX0 TRX1 TRX2 TRX3

RX TX

DUAMCO 4:2

Coupler

RX TX

Coupler

TRX4 TRX5 TRX6 TRX7

DUAMCO 2:2

CELL 0

RX TX

TRX1TRX0

RX TX

DUAMCO 2:2

CELL 1

RX TX

TRX3TRX2

RX TX

DUAMCO 2:2

CELL 2

RX TX

TRX5TRX4

RX TX

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Figure 38 FDUAMCO configuration 2:2 or 4:2

Figure 39 Configuration 8:2 with FDUAMCO and COAMCO8

Module 0 Module 1

RX

TX

RX TXRX TX RX TXRX TX

RXdiv RX

TX

RXdiv

Module 0 Module 1RX TXRX TX RX TXRX TX

FDUAMCO 2:2 FDUAMCO 4:2

TRX1TRX0 TRX0 TRX2TRX1 TRX3

Module 0 Module 1RX TX RX TX

FDUAMCO + COAMCO8

RX

TX0/1

RXdiv

TX2/3

RXdiv TX4/5

TX6/7

RXdiv4..7 4..7 0..30..3

RX TXRX TXModule 0 Module 1

8:2

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Figure 40 Single-cell (11...16,0,0): FICOMs, DIAMCOs and HPDUs in two racks

TRX4 TRX5 TRX6 TRX7TRX2 TRX3

FICOMBase

Module

FICOMExpansion

Module

TX

FICOMExpansion

Module

FICOMExpansion

Module

TRX0 TRX1

RX

DIAMCO DIAMCO

HPDU

TX RX

TRX12 TRX13 TRX14 TRX15TRX10

FICOMBase

Module

FICOMExpansion

Module

TX

FICOMExpansion

Module

FICOMExpansion

Module

TRX8 TRX9

RX RX

DIAMCO DIAMCO

HPDU

TX RX

RACK 0

RACK 1

TRX11

RX

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FCC issues (for U.S. market only)

7 FCC issues (for U.S. market only)In this chapter, you find the power reduction for corner frequencies of carrier units avail-able in the USA. These values are only relevant for the U.S. market.

Revised FCC certification for ECU / FlexCU 850For ECUs/FlexCUs with 869.2 and 893.8 MHz frequencies, in order to fulfill the FCC requirements in the USA, the maximum transmitting power of the corner frequencies of the GSM 850 band (channel numbers 128 and 251, and 869.2 MHz and 893.8 MHz respectively) is decreased for all carrier units available for the U.S. market.

This function is required by law and is therefore implemented as a fixed software com-ponent, which cannot be changed or removed locally.

The BTS evaluates the mobile country code (MCC) provided by the BSC via the attribute "cellGlobalIdentity". If the MCC indicates "USA", the BTS reduces the output power of the corner frequencies dependent on the hardware type of the carrier unit. The following table represents the power reduction values for GMSK and 8PSK modulation.

Carrier unit type GMSK 8PSK

128 251 128 251

ECU V2 -8 dB -4 dB -4 dB -2 dB

ECU HPV2 -6 dB -4 dB -4 dB -2 dB

ECU V3(A) -6 dB -4 dB -4 dB -2 dB

FCU V1 -8 dB -8 dB -4 dB -4 dB

Table 28 Power reduction of the carrier units (ECU/FlexCU 850) at antenna port

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Revised FCC certification for ECU / FlexCU 1900For ECUs/FlexCUs with 1930.2 and 1989.8 MHz frequencies, in order to fulfill the FCC requirements in the USA, the maximum transmitting power of the corner frequencies of the GSM 1900 band (channel numbers 512 and 810, and 1930.2 MHz and 1989.8 MHz respectively) is decreased for all carrier units available for the U.S. market.

This function is required by law and is therefore implemented as a fixed software com-ponent, which cannot be changed or removed locally.

The BTS evaluates the mobile country code (MCC) provided by the BSC via the attribute "cellGlobalIdentity". If the MCC indicates "USA", the BTS reduces the output power of the corner frequencies dependent on the hardware type of the carrier unit. The following table represents the power reduction values for GMSK and 8PSK modulation.

Carrier unit type GMSK 8PSK

512 810 512 810

ECU V2 -4 dB -2 dB -2 dB -0 dB

ECU HPV2 -8 dB -6 dB -4 dB -2 dB

ECU V3(A) -8 dB -6 dB -4 dB -2 dB

FCU V1 -8 dB -8 dB -4 dB -4 dB

Table 29 Power reduction of the carrier units (ECU/FlexCU 1900) at antenna port

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Index

AAbis connection 56Abis interface 33Abis link equipment 58ABISCON 56Abis-interface configurations 11AC/DC panel (ADP) 51AC/DC system 50ACLK 35acoustic hood 25ACTC 54ACTM 54ACTP 54alarm collection terminal boards 54AMCO mode 64, 69, 84, 92

and MHA 47and TMA 47

antenna combining 62antenna line equipment

MHA 46TMA 46

Bbackup battery 51base rack appearance 15base shelter appearance 16battery backup 51BIAS-T 97block diagram of BTS 17

Ccarrier unit interface 33carrier units 38

CU 38ECU 38FlexCU 39GCU 38output power level 40

CC-link 33cell configuration (examples) 99cell configurations 10COAMCO8 45

functionality 80COBA 33combiner gains

(F)DUAMCO 70DIAMCO 84MFDUAMCO 67

combiner lossesMFDUAMCO 67

combining moduleMDUX 43

combining modules 41, 62COAMCO8 45, 80DIAMCO 45, 83Diplexer 98DUAMCO 41, 68FDUAMCO 41, 68FICOM 49, 95FICOM6 48, 90gains DIAMCO 84HPDU 49, 97HYBRID4 43, 66HYBRID6 77MDUX 75MFDUAMCO 42

combining options 10configuration 10core modules 31

COBA 33COREXT 34COSA 34

core redundancy 35COREXT 34corner frequency 104COSA 34cross connect 33CU 38

output power level 40

DDC and battery controller 52DC LE breaker panel 53DC panel (DCP) 53DCBCTRL 52DCP LEBREAK 53DC-supplied BTS 24DIAMCO 45

functionality 83gain 85

dimensions 12Diplexer 98double TRX mode 39dual band configurations 10dual TMA 86DUAMCO 41

functionality 68gain 70insertion loss 69specials 71

DUBIAS 97

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EECU 38

FCC certification 104, 105output power level 40

Eltek rack 19emergency operation 51examples of cell configuration 99

Ffan unit 59FCC certification 1900 105FCC certification 850 104FDUAMCO 41

functionality 68gain 70insertion loss 69specials 73

FICOM 49functionality 95insertion loss 96

FICOM6 48functionality 90gain 94insertion loss 94

filtermembrane 58

FlexCU 39FCC certification 104, 105operation modes 39output power level 40

fourfold receive diversity mode 39frequency bands 14frequency configurations 10frequency hopping 10

Ggain (RX path)

MDUX 79gains

(F)DUAMCO 70DIAMCO 84MFDUAMCO 67MHA 88TMA 89

GCU 38output power level 40

HHDLC link 35heater 59hot plug-in 32

HPDU 49functionality 97insertion loss 98

HYBRID4functionality 43, 66

HYBRID6functionality 77

Iindoor installation 15, 19ingress protection rating 13insertion loss (TX path)

MDUX 79

LLE 58link equipment 58losses

(F)DUAMCO 69MFDUAMCO 67MHA 88TMA 89

MMDUX 43

functionality 75gain 79insertion loss 79

MEF 58membrane filter 58MFDUAMCO 42, 63

gain 67insertion loss 67

MHA 46min/max configuration 10MSU AC 52MSU DC 52MUCO mode 64, 69, 84, 92

and MHA 47and TMA 47

OOPEXAL 58outdoor installation 16, 19output power 40overvoltage protection and tracer 55overvoltage protection external alarms 58OVPT 55

Ppower consumption 12power supply by Eltek rack 19

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power supply modulesAC/DC panel 51AC/DC system 50alarm collection terminal boards 54battery backup 51DC and battery controller 52DC LE breaker panel 53DC panel 53emergency operation 51MSU AC 52MSU DC 52

Rredundancy 11redundancy (core) 35releases 9remote electrical tilt 42RET 42RF output power 40RX path

gains (F)DUAMCO 70gains DIAMCO 84gains MFDUAMCO 67

Ssingle TMA 86single TRX mode 39smoke detector 61

Ttechnical data 12temperature management board 60temperature range 13TMA 46TMB 60traffic channels 11TRX mode (FlexCU) 39TRX per BTS 12TRX per cell 12TX path

losses (F)DUAMCO 69losses MFDUAMCO 67

Vvolume 12

Wweight 12

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geran br bs-240 ii product description

Documents

negligible

mobile country

high corrosion

low noise

permanently

bs81s v7 v2a

fail save

synthesizer