Seimens Bs-240 Xl II

GSM/EDGE RAN - BR line

Product descriptionBase transceiver station equipment

BS-240XL II product description

A50016-G5100-A023-09-7620

2 A50016-G5100-A023-09-7620


Id:0900d80580522404

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.

A50016-G5100-A023-09-7620

3


Id:0900d80580522404

Table of contentsThis document has 89 pages.

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

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.2 Overview of the functionality - main features of BS-240XL II . . . . . . . . . . . 10

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

3 Hardware architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143.1 Rack configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4 Module description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.2 Core modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244.2.1 Core basis (COBA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264.2.2 Core satellite (COSA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.2.3 Core link extension (COREXT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.2.4 Core redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284.3 Carrier related modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.3.1 Carrier units (CU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.3.2 GSM carrier unit (GCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.3.3 EDGE carrier unit (ECU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.3.4 Flexible carrier unit (FlexCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.3.5 Carrier unit output power level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324.4 Antenna combining modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334.4.1 Duplexer amplifier multicoupler (DUAMCO) . . . . . . . . . . . . . . . . . . . . . . . . 334.4.2 Flexible duplexer amplifier multicoupler (FDUAMCO) . . . . . . . . . . . . . . . . 344.4.3 MFDUAMCO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344.4.4 Hybrid extension module for MFDUAMCO (HYBRID4) . . . . . . . . . . . . . . . 354.4.5 Multiple duplexer (MDUX). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354.4.6 Hybrid extension module for MDUX (HYBRID6). . . . . . . . . . . . . . . . . . . . . 364.4.7 Co-amplifier multicoupler (COAMCO8). . . . . . . . . . . . . . . . . . . . . . . . . . . . 374.4.8 Mast head amplifier / tower mounted amplifier (MHA/TMA) . . . . . . . . . . . . 374.4.9 Filter combiner with six TNFs (FICOM6). . . . . . . . . . . . . . . . . . . . . . . . . . . 394.5 Power supply modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404.5.1 AC/DC system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404.5.2 Backup battery (BATTPACK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414.5.3 AC/DC panel (ADP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414.5.4 DC mains supply unit (MSU:DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424.5.5 AC mains supply unit (MSU:AC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424.5.6 DC and battery controller (DCBCTRL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424.5.7 DC panel (DCP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434.5.8 DC link equipment breaker panel (DCP:LEBREAK) . . . . . . . . . . . . . . . . . . 434.5.9 Alarm collection terminal boards (ACTC, ACTP, ACTM) . . . . . . . . . . . . . . 434.6 Abis interface modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 454.6.1 Overvoltage protection and tracer (OVPT) . . . . . . . . . . . . . . . . . . . . . . . . . 45

4 A50016-G5100-A023-09-7620


Id:0900d80580522404

4.6.2 Abis connection (ABISCON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464.6.3 Ethernet connector module (ETHCON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464.7 Overvoltage protection of external alarms (OPEXAL) . . . . . . . . . . . . . . . . . 474.8 Abis link equipment (LE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 484.9 Dust filter (DUSTFILM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 484.10 Fan unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

5 Antenna combining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495.1 MFDUAMCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505.2 FDUAMCO / DUAMCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 555.2.1 DUAMCO specials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585.2.2 FDUAMCO specials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 605.3 MDUX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625.4 COAMCO8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 675.5 Antenna line equipment MHA/TMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 705.6 FICOM6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 745.7 Diplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

6 Cell configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

7 FCC issues (for U.S. market only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

A50016-G5100-A023-09-7620

5


Id:0900d80580522404

List of figuresFigure 1 BS-240XL II base rack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 2 Functional blocks of a BS-240XL II (configuration example) . . . . . . . . . 15Figure 3 BS-240XL II base rack and extension rack . . . . . . . . . . . . . . . . . . . . . . 17Figure 4 Various BTS configurations with BS-240XL II service1A rack . . . . . . . . 18Figure 5 Various configurations of BS-240XL II service2 rack. . . . . . . . . . . . . . . 19Figure 6 Connection of core modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Figure 7 Example of a configuration with COBA4P12 and COREXT . . . . . . . . . 28Figure 8 Example of a configuration with CESCOBA and COREXT . . . . . . . . . . 28Figure 9 FlexCU – Double TRX mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Figure 10 FlexCU – Single TRX mode – Fourfold receive diversity mode. . . . . . . 32Figure 11 ABISCON and OVPT (100/120 Ω ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Figure 12 Example of a configuration of a CESCOBA with ETHCON and COSA4P12

47Figure 13 MFDUAMCO block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Figure 14 HYBRID4 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Figure 15 DUAMCO 2:2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Figure 16 DUAMCO 4:2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Figure 17 DUAMCO 8:2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Figure 18 FDUAMCO block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Figure 19 MDUX block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Figure 20 HYBRID6 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Figure 21 MDUX-HYBRID6 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65Figure 22 COAMCO8 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Figure 23 FDUAMCO in 4:2 mode with COAMCO8 (= 8:2 mode). . . . . . . . . . . . . 68Figure 24 COAMCO8 with MFDUAMCO and HYBRID4 (8/0/0) . . . . . . . . . . . . . . 69Figure 25 TMA (single) block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71Figure 26 MHA / TMA (dual) block diagram (RET only at MHA) . . . . . . . . . . . . . . 71Figure 27 FICOM6 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77Figure 28 Configuration with diplexer (example) . . . . . . . . . . . . . . . . . . . . . . . . . . 79Figure 29 Multi-Cell (4,4,4): with 3 DUAMCO 4:2 . . . . . . . . . . . . . . . . . . . . . . . . . 80Figure 30 Single-Cell (12,0,0): with 2 DUAMCO 8:2 . . . . . . . . . . . . . . . . . . . . . . . 81Figure 31 Single-Cell (12,0,0): with 3 DUAMCO 4:2 . . . . . . . . . . . . . . . . . . . . . . . 81Figure 32 Multi-Cell (8,8,8): with 4 DUAMCO 8:2 (base and extension rack) . . . . 82Figure 33 Multi-Cell (12,12,0): with 4 DUAMCO 8:2 (base and extension rack) . . 82Figure 34 FDUAMCO configuration 2:2 or 4:2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83Figure 35 Configuration 8:2 with FDUAMCO and COAMCO8. . . . . . . . . . . . . . . . 83

6 A50016-G5100-A023-09-7620


Id:0900d80580522404

List of tablesTable 1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Table 2 GSM frequency bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Table 3 Main units and modules (overview) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 4 Core configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Table 5 Carrier unit output power level (typical and guaranteed values) . . . . . . 32Table 6 Possible TMA substitutions with MHA . . . . . . . . . . . . . . . . . . . . . . . . . . 37Table 7 FICOM6 and FDUAMCO: Insertion losses – comparison . . . . . . . . . . . 39Table 8 MFDUAMCO: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Table 9 MFDUAMCO: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Table 10 DUAMCO: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Table 11 FDUAMCO: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Table 12 DUAMCO: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57Table 13 FDUAMCO: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57Table 14 MDUX: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Table 15 MDUX: Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Table 16 MHA: electrical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Table 17 MHA: mechanical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Table 18 TMA: electrical parameters (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . 73Table 19 TMA: mechanical parameters (guaranteed) . . . . . . . . . . . . . . . . . . . . . 73Table 20 FICOM6: Insertion loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78Table 21 FICOM6: Gain (guaranteed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78Table 22 Power reduction of the carrier units (ECU/FlexCU 850) at antenna port .

84Table 23 Power reduction of the carrier units (ECU/FlexCU 1900) at antenna port

85

A50016-G5100-A023-09-7620

7

BS-240XL II product description Reason for update

Id:0900d8058052240e

Reason for updateIssue history

Issue 09, release independent, starting from release BR8.0

Antenna combining modules (4.4)

– New amplifier module MHA from BR9.0 onward

Antenna combining (5)

– New amplifier module MHA from BR9.0 onward

Antenna line equipment MHA/TMA (5.5)

– Chapter restructure due to new hardware MHA

Issue Date Summary

Issue history for this document with order number A30808-X3247-M023-*-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-A023-*-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 of the manual due to new hardware (RSSU and MFDUAMCO/HYBRID4)

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; edi-torial changes

09 03/2009 Expansion of the manual due to new antenna line equipment MHA and minor changes

8 A50016-G5100-A023-09-7620


Id:0900d8058052240e

Reason for update

A50016-G5100-A023-09-7620

9

BS-240XL II product description Introduction

Id:0900d805802393c4

1 Introduction

1.1 GeneralThis manual is applicable for the releases from BR8.0 onward.

The architecture of the BS-240XL II provides maximum flexibility to develop highest capacity BTSs with reduced volume per TRX and an expanded number of 24 TRXs in 2 racks (48 TRXs with FlexCU).

The BS-240XL II is an evolution of the BS-240XL 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 compati-bility 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. Homogenous service throughout the network is assured by common BTS software running on all the platforms.

The modular architecture and the flexible internal structure enable the BS-240XL II 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 doesn’t involve service interruption.And 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 mini-mized number of antennas in connection with a high receiver sensitivity.

10 A50016-G5100-A023-09-7620


Id:0900d805802393c4

Introduction

1.2 Overview of the functionality - main features of BS-240XL II • Casing variants: Indoor version only

• Minimum configuration:– one base rack with up to 24 TRX

• Maximum configuration:– 2 racks with an entire quantity of 48 carriers (1 base and 1 extension rack) – 5 racks housing power supply modules, battery backup and link equipment

(service1A and service2 racks)

• Cell configurations: – Single cell– Multi cell– Up to 6 cells per rack– Up to 12 cells per BS-240XL II– 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

• 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)– 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)

A50016-G5100-A023-09-7620

11

BS-240XL II product description Introduction

Id:0900d805802393c4

• 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

12 A50016-G5100-A023-09-7620


Id:0900d805802393a5

Technical data

2 Technical data

Characteristics BS-240XL II (indoor)

Dimensions base rack (H x W x D) 2025 mm x 600 mm x 450 mm(6’7” x 2’ x 1’5”)

Max. TRX per BTS (in more than one rack) 24 (48 with FlexCUs)

Max. TRX per cell (with FlexCUs in one rack; without FlexCUs in more than one rack)

24

Volume net 547 liters

Typical power consumption base rack 1845 W with CU2640 W with ECU3500 W with 12 FlexCU

Typical power consumption extension rack 1745 W with CU2520 W with ECU3375 W with 12 FlexCU

Weight of basic racks in typical configuration ca. 250 kg (551 Lbs)

Weight of extension racks in typical configuration ca. 250 kg (551 Lbs)

Weight of service1 rack in configuration:AC/DC (2x); F:Battery 2x (type A400/85)

ca. 425 kg (937 Lbs)

Weight of service2 rack in configuration:F:Battery 3x (type A400/85)

ca. 510 kg (1124 Lbs)

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

Ingress protection rating IP20

Table 1 Technical data

A50016-G5100-A023-09-7620

13

BS-240XL II product description Technical data

Id:0900d805802393a5

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

14 A50016-G5100-A023-09-7620


Id:0900d8058052b077

Hardware architecture

3 Hardware architecture The BS-240XL II is designed to serve 12 carrier units in one rack. Figure 1 shows the base rack.

Figure 1 BS-240XL II base rack

The BTS functional blocks of the BS-240XL II are shown in Figure 2

A50016-G5100-A023-09-7620

15

BS-240XL II product description Hardware architecture

Id:0900d8058052b077

Figure 2 Functional blocks of a BS-240XL II (configuration example)

Base Rack

Service Rack

carrier units

ACTM

CC-Links

RX

RXDIV

ACTC ACTP

LE 0 LE 1

BATTERY

DCBCTRL

ACP

ACTC

FAN

Cell 0

ACTC ACTP

FAN

AC/DC

DCP

DCP

DCP

Extension Rack

COBA

2 PCM

Ext. Sync.

2 PCM

4 PCM

Abis

Sync.

Abis

FAN

3xTX

3xTX

RX

RXDIV

3xTX

3xTX

Cell 1

RX

RXDIV

3xTX

3xTX

RX

RXDIV

3xTX

3xTX

Cell 2

Cell 3

OVPT

OVPT

CAN BUS

OASI

(e.g. FlexCU) (e.g.COBA4P12)0 .. 5

carrier units(e.g. FlexCU)

6 .. 11


0 .. 5


6 .. 11

COSA(e.g.

COSA4P12)

MFDUAMCO

duplexer,e.g.

MFDUAMCO

duplexer,e.g.

MFDUAMCO

duplexer,e.g.

MFDUAMCO

duplexer,e.g.

16 A50016-G5100-A023-09-7620


Id:0900d8058052b077


The architecture of BS-240XL II 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 carrier units, are trans-ported via the CAN bus. Alarms of the carrier units are transmitted via CC-link.

The carrier unit provides all analog and digital signal processing including an RF power stage necessary to process a single carrier (e.g. GSM 8 TCHs). The carrier unit(s) inter-face with the combining equipment on the one side and with 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.

3.1 Rack configurationThe BS-240XL II with 12 TRXs per rack (24 with FlexCUs), expandable up to 24 TRXs (48 with FlexCU) in 2 racks, is supplied for indoor installation.

There are four different rack types:– Base rack (with core modules)– Extension rack (when more then 12 carrier units are required)– Service1A rack (with AC/DC, LE and batteries)– Service2 rack (for LE and batteries)

Figure 3 shows the BS-240XL II configured with 24 TRX.

Legend:

AC/DCACPACTCACTMACTPCANCOBACOSADCBCTRLDCPDIAMCOMFDUAMCOFlexCULEOASIOVPT

AC/DC RectifierAC PanelAlarm Collection Terminal Connection Alarm Collection Terminal Master for base rack (optional)Alarm Collection Terminal Processor for extension and slave rack Controller Area NetworkCore BasisCore SatelliteDC and Battery ControllerDC PanelDI(2) Amplifier MulticouplerMulti-Standard Flexible Duplex Amplifier MulticouplerFlexible Carrier UnitLink EquipmentOperator Available Serial InterfaceOver Voltage Protection

A50016-G5100-A023-09-7620

17


Id:0900d8058052b077

Figure 3 BS-240XL II base rack and extension rack

g Six ACOM slots are necessary when the extension rack of the BS-240XL II is equipped with FlexCU.

Legend:

ACOM Antenna combining module

ACOM

0

ACOM

1

ACOM

2

ACOM

3

CU

4

CU

5

CU

10

CU

11

CU

0

CU

1

CU

6

CU

7

CO

BA

0C

OS

A 0

CO

BA

1C

OS

A1

ACOM

0

ACOM

1

ACOM

2

ACOM

3

DC-PANELACT-C

CU

4

CU

5

CU

10

CU

11

CU 0

CU

1

CU 6

CU 7

FAN 0 FAN 1

DC-PANELACT-C

FAN 0 FAN 1

FAN 2 FAN 3

FAN 6 FAN 7

FAN 2 FAN 3

FAN 6 FAN 7

CU

2

CU

3

CU

8

CU

9

CU

2

CU

3

CU

8

CU

9

FAN 4 FAN 5 FAN 4 FAN 5

ACOM

5

ACOM

4

5

4

ACOM

ACOM

18 A50016-G5100-A023-09-7620


Id:0900d8058052b077


The service racks (see Figure 4 and Figure 5) satisfy various applications depending on the number of carrier units configured and/or the number and kind of network termina-tion equipment provided and the battery backup time required.

There are two basic kinds of service racks: one with the AC/DC system (service1A rack) and one for installation of LE and batteries (service2 rack).

Figure 4 Various BTS configurations with BS-240XL II service1A rack

A50016-G5100-A023-09-7620

19


Id:0900d8058052b077

Figure 5 Various configurations of BS-240XL II service2 rack

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.

20 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

4 Module description

4.1 Overview

Name/Type F-V1) Remarks

Core modules: COBA COSACOREXT

M:COBA2P8VxM:COBA4P12VxM:CESCOBAVxM:COSA6P16M:COSA4P12M: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. 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. All types may be mixed.

GCU GCUGVxGCUDVx

Yes

ECU ECU850HPVxECU850VxECUGVxECUDVx, ECUDHPVxECUPVx, ECUPHPVx

Yes

FlexCU FCU850VxFCUGVxFCUDVxFCUPVx

Yes

DUAMCOFDUAMCOMFDUAMCOHYBRID4MDUXHYBRID6COAMCO8 FICOM6

DUAMCO2xDUAMCO4xDUAMCO8xFDUAMCO (x:2 mode)MFDUAMCO850VxMFDUAMCOEGVxMFDUAMCOPGVxMFDUAMCOPS5VxMFDUAMCOREVxMFDUAMCODVxMFDUAMCOPVxHYBRID4G8VxHYBRID4DPVxMDUXDVx MDUXEGVxMDUXPGVxHYBRID6DPVxHYBRID6G8VxCOAMCO8DPVx COAMCO8G8Vx

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

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 on.

The FICOM6 is available from BR9 on.

Table 3 Main units and modules (overview)

A50016-G5100-A023-09-7620

21

BS-240XL II product description Module description

Id:0900d80580524899

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 from BR9.0 onward with MFDUAMCO or with FICOM6. Different MHAs exist for different fre-quency bands.

OVPTABISCON

M:OVPTVxM:OVPTKOAXVxM:ABISCONVxM:ABISCONCXVx

No The overvoltage protection and tracer and the Abis connection modules are optional modules and can be installed alternatively. It:– can be equipped in the base rack – 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.

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.

AC/DC system AC/DCDVxAC/DCAVx

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

DC and battery controller

DCBCTRLDVxDCBCTRLAVx.

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

Battery BATTPACKVx No Backup batteries are mandatory for AC-supplied systems and must be installed in the service racks.

DCP DCP:R12-2BVx DCP:R12-2EVx

No The DC panel is used for distribution of -48 V DC and can be equipped in the base and extension rack.

ADP ADPAVxADPA/UVxADP-2Vx

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

LE breaker panel DCP:LEBREAKVxDCP:LEBREAK2Vx

No The LE breaker panel provides the distribution of the -48 V supply voltage to the modules within the service racks.


Table 3 Main units and modules (overview) (Cont.)

22 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

ACTCACTPACTM

ACTC-yVxACTPVxACTMVxACTM24Vx

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

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

rack

MSU AC MSU:AC3PH-2VxMSU:AC3PHVxMSU:AC2PH80UVxMSU:BASV2

No Mains supply unit for AC.

MSU DC MSU:DC100AVx MSU:LPDC80-2VxMSU:DCVxMSU:BASV4MSU:100ADCVx

No For external DC lines and upgrade kit for lightning protection. Can be equipped in the base, extension and service2 racks.

OPEXALEAP

OPEXAL10VxEAPBVx

No Optional lightning protection module for the ACTM alarm input lines.

Fan FANVxFAN-NIVx

No Fan units are mandatory for each rack.

Dust filter DUSTFILM-2Vx No Optional module for indoor, alternatively to MEF, for cleaning the cooling air

Rack R:BS120-2Vx No One type of rack for all.

Frames F:AC/DCAVxF:AC/DCDVxF:ACOMCUVxF:ACOMVxF:BATTRAYVxF:BATTRAYBV3F:CORECUVxF:CUVxF:FAN-2VxF:NTVx

No Each of the frames is necessary for installing the equipment.

Cover parts CP:20MMBFxCP:ACDCAVxCP:ACDCDVxCP:ACOMVxCP:ACTVxCP:AIRINLETVxCP:COSA/COBAVxCP:CUVxCP:DIAMCOVx

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



A50016-G5100-A023-09-7620

23


Id:0900d80580524899

Mounting kits MK:AIRBRVxMK:AIRGUIDEVxMK:BATTERYVxMK:BATTPACKVxMK:CAR12-2xxxVxMK:CAR12-2S1UVxMK:CARSH-ISSVxMK:COREXTB/EVxMK:EAPB-BOXRV1MK:EMCR-2VxMK:EQ4RVxMK:ETHCONSHVxMK:FOCVxMK:LE6R-2VxMK:NO-DISVx MK:OPEXALVx

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.



24 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

4.2 Core modules Core 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 families 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 4 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 8…11 *

Base cabinet

CU slots 0…11 *

Ext. cabinet

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 4 Core configurations

A50016-G5100-A023-09-7620

25


Id:0900d80580524899

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

Figure 6 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 (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 tristate. These drivers will be enabled not 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 8…11 *

Base cabinet

CU slots 0…11 *

Ext. cabinet

Core redun-dancy

Table 4 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

26 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

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.

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).

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.

A50016-G5100-A023-09-7620

27


Id:0900d80580524899

If 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.

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.

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

The first 8 carrier units in the base rack are supported by the COBA. The COSA supports 4 additional carrier units in the base rack and 12 carrier units in the extension rack.

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 4 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 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.

The COREXT board connects 4 carrier unit ports and 2 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 extension with 2 Abis (PCM) links and 4 CC-links

28 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

Figure 7 Example of a configuration with COBA4P12 and COREXT

Figure 8 Example of a configuration with CESCOBA and COREXT

4.2.4 Core redundancy To 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.

One of the COBAs is active and one passive. The passive one is waiting for its activation 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.

CU CU CUCU

COBA4P12

COREXT

CU CU

CU CU CU CU CU CU

2x Abis2x Abis

BA SE RAC K XL

C ESC OBAC OR EXT/

C OSA4P12

LMT/TPC

ACT

CAN

cu cu cu cu

cu cu cu cu

ANT ENN A COMB.

cu cu

cu cu

ETHC ON

ETH4 xAb is

A50016-G5100-A023-09-7620

29


Id:0900d80580524899

If the core consists of a combination of COBA and COSA or COBA and COREXT modules, each of these modules must be installed twice.

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.

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.

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 switch over occurs.

Fault propagation through dependent modules in case of core redundancyThe redundant implemented COBA is a "cold" one, that means no data synchronization between the two COBAs.

If 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.

30 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

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 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. Different variants of CUs for the several frequency bands GSM 900, GSM 1800 and GSM 1900 exist (see also Table 5).

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

Different variants of GCUs for the frequency bands GSM 900 and GSM 1800 exist (see also Table 5).

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 5).

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.

A50016-G5100-A023-09-7620

31


Id:0900d80580524899

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 inde-pendent ECUs or as one carrier unit with four receivers, the so called "fourfold receive diversity" mode. To improve the downlink in fourfold receive diversity mode, it is recom-mended 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) 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 W.

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 5).

FlexCU operation modes FlexCUs 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 9 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.

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

32 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

Figure 10 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 5 Carrier unit output power level (typical and guaranteed values)

A50016-G5100-A023-09-7620

33


Id:0900d80580524899

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 three different amplifier multicouplers: e.g. with the DUAMCO, its successor 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. It splits the receive signal to be used in the carrier units and serves as a duplexer unit, which provides filtering func-tions 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 implement 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 six DUAMCO 2:2 or DUAMCO 4:2 and up to two DUAMCO 8:2 respectively in one rack.

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.

34 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

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.

Each FDUAMCO module may be operated in one of the following modes (by jumper set-tings): • 2:2 mode: 1 carrier is fed to the antenna port • 4:2 mode: 2 carriers are combined and fed to the antenna port

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

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, 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: 1 carrier is fed to the antenna port • 4:2 mode: 2 carriers are combined and fed to the antenna port

Within each cell/sector, the same mode of the MFDUAMCO shall be installed.

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.

A50016-G5100-A023-09-7620

35


Id:0900d80580524899

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 6 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 4 RX ports per duplexer. These 4 ports can be used to connect the RX paths of 2 TRXs and the RXdiversity paths of 2 other TRXs to one duplexer and hence prepares the duplexer for the implementation of cells with up to 4 TRXs and diversity.

The 6 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 6 antennas with 1 or 2 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 the same base or extension rack 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.

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.

36 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

• 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 a 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 two 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.

For detailed information, see Antenna Combining - MDUX.

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

The HYBRID6 module consists of 3 hybrids units and is used in combination with an MDUX to combine 2 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 2 HYBRID6 modules can be installed for 6 antennas with 1 or 2 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 with HYBRID6.

A50016-G5100-A023-09-7620

37


Id:0900d80580524899

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 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 or with the FICOM6 from BR9.0 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. One dual TMA (DTMA) is needed for two RX paths of (F)DUAMCO.

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 6 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

previous TMA MHA

STMA E-GSM MDGA

STMA 850 MDTA

DTMA DCS MDDA

DTMA PCS MDPA

Table 6 Possible TMA substitutions with MHA

38 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

/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.

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".

A50016-G5100-A023-09-7620

39


Id:0900d80580524899

4.4.9 Filter combiner with six TNFs (FICOM6) g The FICOM6 module is available for a BTS from BR9.0 onward.

Full O&M support is available from BR10 onward. This includes e.g.:

• Unrestricted, independent mapping and coordination by LMT/RC

• Standard double antenna configuration with up to 12 TRXs connected to 2 FICOM6 modules in one rack (with BR9, only up to 8 TNFs can be used)

• Support of 3rd party and 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).

With one FICOM6 module it is possible to combine up to 6 TRXs per antenna. With a standard double antenna and BR10 up to 12 TRXs are configurable.

The FICOM6 provides the same functionality like an MFDUAMCO module but with dif-ferent 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.

In each base or extension rack, up to 2 FICOM6 modules can be installed.

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

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 6 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 7 FICOM6 and FDUAMCO: Insertion losses – comparison

40 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

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 frame housed in the service1A rack.

A frame contains:

• up to 6 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 has integrated 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.

A50016-G5100-A023-09-7620

41


Id:0900d80580524899

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.

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.

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 over to "Emergency configuration" after a user-defined time. In this mode, none or only operator defined TRX remain in operation. All TRXs, which are not part of the emergency 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 are switched off, except the core modules. 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.

The AC/DC power distribution panel is integrated into the service1A rack 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 breaker s for base and extension racks, for all service2 racks and all LE in the service1A rack, for fan units, for the ACTC module, for other panels

• Battery breaker

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

The DC lines (-48 V, 0 V) of the base/extension/service2 rack 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 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.

42 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

4.5.4 DC mains supply unit (MSU:DC) The MSU is located at the EMI panel.

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 50 A, 80 A or 100 A has to be installed in each rack (base/extension/ service2). Also a MSU:BASV4 (120 A-MSU for Basic Set; optional with lightning protec-tion) can be installed.

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.

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. In all other racks, the cover part CP:MSU has to be installed.

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.

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 vice versa.

In detail, it 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)

A50016-G5100-A023-09-7620

43


Id:0900d80580524899

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 each base and extension rack. Single breakers are dedi-cated to the carrier units, the core modules, the combiners, the fans, the ACTP. The DC panel contains also 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, the DCP:LEBREAK (LE breaker panel) is mandatory. In service1A a DCP:LEBREAK is required only if installation of LE is foreseen.

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

The LE breaker panel provides slots for up to 8 DC breakers in service1A rack and up to 7 DC breakers (with a panel V3) or 6 DC breakers (with a panel V1/V2) in service2 rack, which may be used for connecting of the LE modules.

Additionally to the 6 breakers in the service2 rack, 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 8 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 plug-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).

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

44 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

• Lightning protection alarm (LPA/OVP)

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

On customer request, an ACTM module can be installed in the base rack. 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 a outdoor base version must be protected by its own OPEXAL module.

g The ACTM is mandatory if more than 7 external site alarms are required.

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

A50016-G5100-A023-09-7620

45


Id:0900d80580524899

4.6 Abis interface modules

4.6.1 Overvoltage protection and tracer (OVPT) The OVPT is an optional module. An ABISCON module can be installed as an alterna-tive.

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

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.

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.

Figure 11 ABISCON and OVPT (100/120 Ω )

monitoring interfaces

OVPTABISCON

uplink linesdownlink linesterminals for external PCM cables

46 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

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 and the peripheral Abis cables. The Abis connection module also provides the feature for monitoring 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 11.

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 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 base rack or BS-240XL II base rack (relevant for XL rack variant with MUCO slots only).

A50016-G5100-A023-09-7620

47


Id:0900d80580524899

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

Figure 12 shows an example of a configuration of a CESCOBA with ETHCON and COSA4P12.

Figure 12 Example of a configuration of a CESCOBA with ETHCON and COSA4P12

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.

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

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

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

BA SERAC K XLEXTENS ION RAC K XL

cu cu cu cu

ANT ENN A COMB.

cu

cu cu

cu cu cu cu cu

C ES C OBAC OSA4P12

LMT/TPC

CAN

cu cu cu cu

cu cu cu cu

ANT ENN A COMB.

cu cu

cu cu

ETHC ON

ETH

ACT

4 xAb is

ACT

48 A50016-G5100-A023-09-7620


Id:0900d80580524899

Module description

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 a link equipment is available at the telecommunication site, no additional link equip-ment is necessary. If the BTS is installed away from a telecommunication site, the link equipment can be installed inside the BTS.

For connection of LE to external interfaces (Abis links), cable entries are available.

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

4.9 Dust filter (DUSTFILM) A dust filter is installed in the indoor variant of the BTS. The dust filter is an air filter and protects the BTS against dust particles.

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 the signal is processed by the COBA, in extension and service racks by the ACTP.

Mandatory fan units 8 fan units must be installed into each: • BS-240XL II base rack • BS-240XL II extension rack

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

Optional fan units 2 additional fan units shall be installed into the BS-240XL II service1A rack if more than 6 HU for LE (> 600W) are provided.4 fan units shall be installed into the BS-240XL II service2 rack if more than 12 HUs for LE (> 1 kW) are provided.

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.

A50016-G5100-A023-09-7620

49

BS-240XL II product description Antenna combining

Id:0900d8058052473e

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" means 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 analogous 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 good 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.

50 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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.

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 inter-modulation 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"

A50016-G5100-A023-09-7620

51


Id:0900d8058052473e

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 a O&M bus (CAN bus).

Operating modes for MFDUAMCO The MFDUAMCO has 2 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 9, 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 9, 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 only implicitly enabled in parallel 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.

52 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

The following figure shows the block diagram of a 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)

A50016-G5100-A023-09-7620

53


Id:0900d8058052473e

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

54 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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 8 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 9 MFDUAMCO: Gain (guaranteed)

A50016-G5100-A023-09-7620

55


Id:0900d8058052473e

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 functionThe (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), 2 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: jumpers for combining mode setting


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


56 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

The O&M unit transmits error messages to the COBA via a 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 12 and Table 13, 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 (F)DUAMCO can be matched 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.


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 into account the full temperature range.

(F)DUAMCO gains (RX path)

GSM 900, GSM 1800, GSM 1900

DUAMCO type Typical Guaranteed

DUAMCO 2:2 1.2 dB 2.5 dB



Table 10 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 11 FDUAMCO: Insertion loss

A50016-G5100-A023-09-7620

57


Id:0900d8058052473e

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 12 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


Attenuator range 0+6 dB ± 0.5 dB

Attenuator step size 1 dB ± 0.3 dB

Table 13 FDUAMCO: Gain (guaranteed)

58 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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

A50016-G5100-A023-09-7620

59


Id:0900d8058052473e



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

60 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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

A maximum of four TRXs can be connected to one FDUAMCO. In combination with a COAMCO8, eight 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.

A50016-G5100-A023-09-7620

61


Id:0900d8058052473e

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

62 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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 same base or extension rack 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. Dependent 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 configurations).

In each base/extension1 rack up to 2 MDUX modules and up to 4 HYBRID6 modules can be installed.

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

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

EachRF part contains a duplex filter which combines the RX and the TX path together, 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.


A50016-G5100-A023-09-7620

63


Id:0900d8058052473e

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 3dB hybrid (using one out of six 3dB hybrids of the module HYBRID6, see below). The 3dB 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

If 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

64 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

HYBRID6 Up to two HYBRID6 modules (hybrid extension module for MDUX) can be installed in combination with each MDUX used to change the standard 6:6 configuration to a 12:6 configuration.

The HYBRID6 module consists of 3 identical 3dB hybrid units for combining of 2 TX signals each. In combination with a MDUX, two TRXs onto one antenna can be com-bined.

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 two carriers each (12 carriers with 6 FlexCUs). Up to 4 RX and 2 TX paths were 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

A50016-G5100-A023-09-7620

65


Id:0900d8058052473e

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 TRXsIn 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 also being 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 3 COAMCO modules. The maximum cell configuration is 4 carriers to 1 antenna port.

Within BS-240XL II base/extension racks, a cell configuration 8 / 8 / 8 can be achieved with one MDUX, 3 COAMCO and 2 HYBRID6 modules (24 TRXs with 12 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

66 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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 is frequency band-dependent.

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 14 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 15 MDUX: Gain

A50016-G5100-A023-09-7620

67


Id:0900d8058052473e

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.

In sum, the COAMCO8 combines eight carrier units: 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

68 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

Combination with FDUAMCO

Figure 23 FDUAMCO in 4:2 mode with COAMCO8 (= 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

A50016-G5100-A023-09-7620

69


Id:0900d8058052473e

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

70 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

5.5 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. One dual TMA (DTMA) is needed for two RX paths of (F)DUAMCO.

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

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: • 2 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:

A50016-G5100-A023-09-7620

71


Id:0900d8058052473e

Figure 25 TMA (single) block diagram

Figure 26 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

72 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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 16 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 17 MHA: mechanical parameters

A50016-G5100-A023-09-7620

73


Id:0900d8058052473e

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 18 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 19 TMA: mechanical parameters (guaranteed)

74 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

5.6 FICOM6 The FICOM6 (filter combiner with 6 tunable narrowband filters) is the successor of the FICOM modules (old FICOM modules were not available in BS-240XL II) and provides the same functionality like an MFDUAMCO module.

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 2 and a maximum of 6 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 auto-matic tuning process, the drift of the passband filter center frequency is compensated.

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 (6 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 27) 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 and can be by-passed with a switch in case a high gain TMA is providing sufficient signal amplification (MUCO mode). 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

A50016-G5100-A023-09-7620

75


Id:0900d8058052473e

MUCO) to allow correct gain setting for a great variety of antenna system configurations: with or without TMA, high or low gain TMA and a range of feed line loss. 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 TX signals from up to 6 TRXs, each operating on a different carrier frequency, are passed through 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 module's micro controller. 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, DTMA 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 DC/DC converter supplies the FICOM6 itself. The PDU provides the DC power supply and the alarm monitoring of the TMAs. Alarm monitoring is done with a signaling interface between FICOM6 and TMA.

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

– VSWR < 2– 2 ≤ VSWR ≤ 3– VSWR > 3


76 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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 TMA). The FICOM6 gain is around 20/22 dB (see Table 21, also for RXCA gain).

The low amplifying MUCO mode is used in case of cascading the FICOM6 with a pre-amplifier MHA or TMA. A built-in attenuator provides a constant gain between MHA/TMA and FICOM6, independent of the cable loss. The power supply and the sig-naling 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 21, also for RXCA gain). The gain of the FICOM6 can be matched 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.

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.

A50016-G5100-A023-09-7620

77


Id:0900d8058052473e

The following figure shows the block diagram of a FICOM6:

Figure 27 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.

78 A50016-G5100-A023-09-7620


Id:0900d8058052473e

Antenna combining

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 (appr. 1.5 dB more insertion loss = 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 20 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 21 FICOM6: Gain (guaranteed)

A50016-G5100-A023-09-7620

79


Id:0900d8058052473e

5.7 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. For 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 28 Configuration with diplexer (example)

Antenna Dual Band

900 MHz1800 MHz

Diplexer

DUAMCO 2:2(1800 MHz)

DUAMCO 2:2(900 MHz)

Diplexer

f1 f2

f1 + f2

f1 f2

80 A50016-G5100-A023-09-7620


Id:0900d805802393f4

Cell configurations

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

– 4/4/4 with duplex combining (see Figure 29)

– 12/0/0 with duplex combining (see Figure 30 and Figure 31)

– 8/8/8 with duplex combining (base and extension rack) (see Figure 32)

– 12/12/0 with duplex combining (base and extension rack) (see Figure 33)

– FDUAMCO configuration 2:2 and 4:2 (see Figure 34)

– FDUAMCO configuration 8:2 with COAMCO8 (see Figure 35)

Figure 29 Multi-Cell (4,4,4): with 3 DUAMCO 4:2

RX TX

DUAMCO 4:2

CELL 0

Coupler

RX TX

Coupler

TRX0 1 2 3

RX TX

DUAMCO 4:2

CELL 1

Coupler

RX TX

Coupler

TRX4 5 6 7

RX TX

DUAMCO 4:2

CELL 2

Coupler

RX TX

Coupler

TRX8 9 10 11

A50016-G5100-A023-09-7620

81

BS-240XL II product description Cell configurations

Id:0900d805802393f4

Figure 30 Single-Cell (12,0,0): with 2 DUAMCO 8:2

Figure 31 Single-Cell (12,0,0): with 3 DUAMCO 4:2

RX TX

DUAMCO 8:2

CELL 0

Coupler

RX TX

Coupler

4 5TRX0 1 2 3

RX TX

DUAMCO 8:2

Coupler

RX TX

Coupler

10 11TRX6 7 8 9

RX TX

DUAMCO 4:2

CELL 0

Coupler

RX TX

Coupler

TRX0 1 2 3

RX TX

DUAMCO 4:2

Coupler

RX TX

Coupler

TRX4 5 6 7

RX TX

DUAMCO 4:2

Coupler

RX TX

Coupler

TRX8 9 10 11

82 A50016-G5100-A023-09-7620


Id:0900d805802393f4

Cell configurations

Figure 32 Multi-Cell (8,8,8): with 4 DUAMCO 8:2 (base and extension rack)

Figure 33 Multi-Cell (12,12,0): with 4 DUAMCO 8:2 (base and extension rack)

8 TRX4 TRX4 TRX8 TRX

8 TRX4 TRX4 TRX8 TRX

A50016-G5100-A023-09-7620

83

BS-240XL II product description Cell configurations

Id:0900d805802393f4

Figure 34 FDUAMCO configuration 2:2 or 4:2

Figure 35 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

84 A50016-G5100-A023-09-7620


Id:0900d805802393fd

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 22 Power reduction of the carrier units (ECU/FlexCU 850) at antenna port

A50016-G5100-A023-09-7620

85

BS-240XL II product description FCC issues (for U.S. market only)

Id:0900d805802393fd

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 23 Power reduction of the carrier units (ECU/FlexCU 1900) at antenna port

86 A50016-G5100-A023-09-7620


Id:0900d80580522404

Index

AAbis connection 46Abis interface 26Abis interface configurations 11Abis link equipment 48ABISCON 46AC/DC panel (ADP) 41AC/DC system 40ACLK 29ACTC 43ACTM 44ACTP 43alarm collection terminal boards 43AMCO mode 51, 56, 76

and MHA 38and TMA 38

antenna combining 49antenna line equipment

MHA 37TMA 37

Bbackup battery 41battery backup 41

Ccarrier unit interface 26carrier units 30

CU 30ECU 30FlexCU 31GCU 30output power level 32

CC-link 26cell configuration 10cell configuration (examples) 80COAMCO8 37

functionality 67COBA 26combiner gains

(F)DUAMCO 56MFDUAMCO 54

combiner losses(F)DUAMCO 56MFDUAMCO 54

combining moduleMDUX 35

combining modules 33, 49COAMCO8 37, 67Diplexer 79DUAMCO 33, 55FDUAMCO 34, 55FICOM6 39, 74HYBRID4 35, 53HYBRID6 64MDUX 62MFDUAMCO 34

combining options 10configuration 10core modules 24

COBA 26COREXT 27COSA 27

core redundancy 28COREXT 27corner frequency 84COSA 27cross connect 26CU 30

output power level 32

DDC and battery controller 42DC LE breaker panel 43DC panel (DCP) 43DCBCTRL 42DCP LEBREAK 43dimensions 12Diplexer 79double TRX mode 31dual band configurations 10dual TMA 70DUAMCO 33

functionality 55gain 57insertion loss 56specials 58

dust filter 48DUSTFILM 48

EECU 30

FCC certification 84, 85output power level 32

Eltek rack 19emergency operation 41examples of cell configuration 80

A50016-G5100-A023-09-7620

87


Id:0900d80580522404

Ffan unit 48FCC certification 1900 85FCC certification 850 84FDUAMCO 34

functionality 55gain 57insertion loss 56specials 60

FICOM6 39functionality 74gain 78insertion loss 78

filter 48FlexCU 31

FCC certification 84, 85operation modes 31output power level 32

fourfold receive diversity mode 31frequency bands 13frequency configurations 10frequency hopping 10

Ggain (RX path)

MDUX 66gains

(F)DUAMCO 56MFDUAMCO 54MHA 72TMA 73

GCU 30output power level 32

HHDLC link 29hot plug-in 25HYBRID4 35

functionality 53HYBRID6

functionality 64

Iingress protection rating 12insertion loss (TX path)

MDUX 66

LLE 48link equipment 48

losses(F)DUAMCO 56MFDUAMCO 54MHA 72TMA 73

MMDUX 35

functionality 62gain 66insertion loss 66

MFDUAMCO 34functionality 50gain 54insertion loss 54

MHA 37min/max configuration 10MSU AC 42MSU DC 42MUCO mode 51, 56, 76

and MHA 38and TMA 38

OOPEXAL 47output power 32overvoltage protection and tracer 45overvoltage protection external alarms 47OVPT 45

Ppower consumption 12power supply by Eltek rack 19power supply modules

AC/DC panel 41AC/DC system 40alarm collection terminal boards 43battery backup 41DC and battery controller 42DC LE breaker panel 43DC panel 43emergency operation 41MSU AC 42MSU DC 42

Rredundancy 11redundancy (core) 28releases 9remote electrical tilt 34RET 34RF output power 32

88 A50016-G5100-A023-09-7620


Id:0900d80580522404

RX pathgains (F)DUAMCO 56gains MFDUAMCO 54

Ssingle TMA 70single TRX mode 31

Ttechnical data 12temperature range 12TMA 37traffic channels 11TRX mode (FlexCU) 31TRX per BTS 12TRX per cell 12TX path

losses (F)DUAMCO 56losses MFDUAMCO 54

Vvolume 12

Wweight 12

A50016-G5100-A023-09-7620

89


Id:0900d80580522404

Documents

Seimens Bs-240 Xl II