Ericsson CME 20 R6.1, CMS 40 R3, CME 20 R6.0, RBS 2302, RBS 2301 Reference Manual

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CME 20 R6.0/CMS 40 R2, CME 20 R6.1/CMS 40 R3

RBS 2301, RBS 2302

Reference Manual

EN/LZT 123 2697 R5A

Reference Manual

EN/LZT 123 2697 R5A 1998-08-13

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Reference Manual

Due to continued progress in methodology, design and manufacturing the contents of this document are subject to revision without notice.

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Reference Manual

Contents

1 Preface...........................................................................................................11

1.1 Objectives................................................................................................11

1.2 Audience..................................................................................................12

1.3 Customer Documentation Library............................................................12

1.4 Release History.......................................................................................13

2 Site Conﬁgurations, RBS 2000 Micro.........................................................15

2.1 Terminology.............................................................................................15

2.2 System Overview.....................................................................................15

2.3 Conﬁguration............................................................................................16

3 Radio Conﬁgurations, RBS 2000 Micro......................................................21

3.1 References...............................................................................................21

3.2 Terminology.............................................................................................21

3.3 Frequency Bands.....................................................................................23

3.4 General....................................................................................................24

3.5 Conﬁgurations..........................................................................................24

3.6 Basic Conﬁguration GSM 900 MHz, M9d_2.2........................................28

3.7 Basic Conﬁguration GSM 900 MHz, M9d_1.2........................................30

3.8 Basic Conﬁguration GSM 1800 MHz, M18d_2.2....................................31

3.9 Basic Conﬁguration GSM 1800 MHz, M18d_1.2....................................33

3.10 Basic Conﬁguration GSM 1900 MHz, M19d_2.2..................................34

3.11 Basic Conﬁguration GSM 1900 MHz, M19d_1.2..................................36

4 Product Speciﬁcation for RBS 2301...........................................................37

4.1 General....................................................................................................37

4.2 Product Architecture................................................................................39

4.3 Conﬁguration............................................................................................42

4.4 Combinations...........................................................................................43

4.5 Transmission Modes................................................................................44

4.6 Interface and Connection........................................................................45

4.7 Product Requirements.............................................................................46

4.8 Future Expansion.....................................................................................53

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5 Product Speciﬁcation for RBS 2302...........................................................55

5.1 Terminology.............................................................................................55

5.2 General....................................................................................................55

5.3 Product Architecture................................................................................57

5.4 Conﬁgurations..........................................................................................59

5.5 Combinations...........................................................................................62

5.6 Transmission Modes................................................................................62

5.7 Interface and Connection........................................................................63

5.8 Product Requirements.............................................................................65

5.9 Future Expansion.....................................................................................71

6 Product Speciﬁcation for Power and Battery Cabinet ............................73

6.1 Terminology.............................................................................................73

6.2 General....................................................................................................73

6.3 Product Architecture................................................................................74

6.4 Conﬁgurations..........................................................................................75

6.5 Combinations...........................................................................................76

6.6 Interface and Connection........................................................................76

6.7 Product Requirements.............................................................................79

7 Broadcast.......................................................................................................91

7.1 References...............................................................................................91

7.2 Concepts..................................................................................................91

7.3 Functions.................................................................................................91

8 Physical Channel Handling..........................................................................95

8.1 References...............................................................................................95

8.2 Functions.................................................................................................95

9 Base Station Power Control........................................................................99

9.1 References...............................................................................................99

9.2 Concepts..................................................................................................99

9.3 Functions.................................................................................................99

9.4 Operational Conditions............................................................................100

10 Channel Measurements..............................................................................101

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10.1 References.............................................................................................101

10.2 Concepts................................................................................................101

10.3 Functions...............................................................................................101

10.4 Operational Conditions..........................................................................103

11 Discontinuous Transmission.....................................................................105

11.1 References.............................................................................................105

11.2 Functions...............................................................................................105

12 Encryption....................................................................................................109

12.1 References.............................................................................................109

12.2 Functions...............................................................................................109

13 Frequency Hopping ...................................................................................111

13.1 References.............................................................................................111

13.2 Concepts................................................................................................111

13.3 Function.................................................................................................111

13.4 Operational Conditions..........................................................................112

14 Mode Modify ...............................................................................................113

14.1 References.............................................................................................113

14.2 Function.................................................................................................113

14.3 Operational Conditions..........................................................................114

15 Mobile Station Power Control....................................................................115

15.1 References.............................................................................................115

15.2 Functions...............................................................................................115

16 Short Message Service...............................................................................117

16.1 References.............................................................................................117

16.2 Functions...............................................................................................117

16.3 Operational Conditions..........................................................................119

17 Diversity Supervision.................................................................................121

17.1 References.............................................................................................121

17.2 Concepts................................................................................................121

17.3 Function.................................................................................................122

17.4 Operational Conditions..........................................................................123

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18 Synchronization..........................................................................................125

18.1 References.............................................................................................126

18.2 Concepts................................................................................................126

18.3 Functions...............................................................................................126

18.4 Operational Conditions..........................................................................128

19 Radio Reception..........................................................................................131

19.1 References.............................................................................................131

19.2 Concepts................................................................................................131

19.3 Functions...............................................................................................132

19.4 Operational Conditions..........................................................................132

20 Radio Transmission....................................................................................135

20.1 References.............................................................................................135

20.2 Concepts................................................................................................135

20.3 Functions...............................................................................................136

20.4 Operational Conditions..........................................................................137

21 Restart and Recovery.................................................................................139

21.1 Concepts................................................................................................139

21.2 Functions...............................................................................................140

21.3 Operational Conditions..........................................................................142

22 Function Change.........................................................................................143

22.1 Concepts................................................................................................143

22.2 Functions...............................................................................................144

22.3 Operational Conditions..........................................................................145

23 Functionality Administration.....................................................................147

23.1 Concepts................................................................................................147

23.2 Functions...............................................................................................148

23.3 Operational Conditions..........................................................................151

24 Operation and Maintenance Support........................................................153

24.1 Concepts................................................................................................153

24.2 Functions...............................................................................................154

25 Installation Data Handling..........................................................................159

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25.1 Concepts................................................................................................159

25.2 Functions...............................................................................................160

25.3 Operational Conditions..........................................................................161

26 Self Test and Supervision..........................................................................163

26.1 Concepts................................................................................................163

26.2 Self Test.................................................................................................163

26.3 Supervision............................................................................................163

27 Diagnostics and Fault Handling................................................................165

27.1 Concepts................................................................................................165

27.2 Functions...............................................................................................165

27.3 Operational Conditions..........................................................................167

28 Operation and Maintenance Terminal.......................................................169

28.1 References.............................................................................................169

28.2 Concepts................................................................................................169

28.3 Functions...............................................................................................170

28.4 Operational Conditions..........................................................................176

29 External Alarms...........................................................................................177

29.1 Concepts................................................................................................177

29.2 Function.................................................................................................177

29.3 Operational Conditions..........................................................................178

30 Power Supply..............................................................................................179

30.1 References.............................................................................................179

30.2 Concepts................................................................................................179

30.3 Functions...............................................................................................180

30.4 Operational Conditions..........................................................................180

31 Climate Protection......................................................................................183

31.1 Concepts................................................................................................183

31.2 Functions...............................................................................................184

32 Transmission Interface Handling G.703 2048 kbit/s...............................187

32.1 References.............................................................................................187

32.2 Concepts................................................................................................187

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32.3 Functions...............................................................................................189

32.4 Operational Conditions..........................................................................197

33 Transmission Interface Handling DS1 1544 kbit/s..................................199

33.1 References.............................................................................................199

33.2 Concepts................................................................................................199

33.3 Functions...............................................................................................201

34 Terrestrial Link Handling............................................................................215

34.1 References.............................................................................................215

34.2 Concepts................................................................................................215

34.3 Function.................................................................................................215

34.4 Operational Conditions..........................................................................215

35 Channel Distribution Function..................................................................217

35.1 References.............................................................................................217

35.2 Concepts................................................................................................217

35.3 Functions...............................................................................................218

35.4 Operational conditions...........................................................................227

36 Common Control Channel Handling.........................................................229

36.1 References.............................................................................................229

36.2 Function.................................................................................................229

36.3 Operational Conditions..........................................................................233

37 Speech and Data Services.........................................................................235

37.1 References.............................................................................................235

37.2 Concepts................................................................................................235

37.3 Functions...............................................................................................236

37.4 Operational Conditions..........................................................................240

38 Call Control..................................................................................................243

38.1 References.............................................................................................243

38.2 Concepts................................................................................................243

38.3 Functions...............................................................................................244

38.4 Operational Conditions..........................................................................251

39 EMC Capabilities for RBS 2301.................................................................255

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39.1 References.............................................................................................255

39.2 Concepts................................................................................................256

39.3 Capabilities............................................................................................258

40 EMC Capabilities for RBS 2302.................................................................263

40.1 References.............................................................................................263

40.2 Concepts................................................................................................266

40.3 Emission................................................................................................268

40.4 Immunity................................................................................................270

41 Environmental Capabilities........................................................................277

41.1 Scope.....................................................................................................277

41.2 Terminology...........................................................................................277

41.3 References.............................................................................................278

41.4 Transport -40



C - +70C........................................................................278

41.5 Storage -25



C - +55C...........................................................................279

41.6 Handling -40



C - +70C.........................................................................281

41.7 Operation Mast Mounted Equipment -33



C - +45C.............................281

42 Product Safety Requirements RBS 2000..................................................285

42.1 References.............................................................................................285

42.2 Product Safety.......................................................................................285

43 Building Practice Requirements RBS 2000..............................................287

43.1 Fire Resistance......................................................................................287

43.2 Poisonous Fumes..................................................................................288

43.3 Declaration of Materials.........................................................................288

43.4 Silicone..................................................................................................288

43.5 Environmental Consideration during the Life-Cycle..............................288

44 BTS Parameter Limitations........................................................................289

44.1 Purpose and Readers............................................................................289

44.2 Terminology...........................................................................................289

44.3 References.............................................................................................289

44.4 Parameters............................................................................................289

44.5 Appendix................................................................................................295

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45 Glossary.......................................................................................................297

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Preface

1 Preface

This manual is valid for CME 20 R6.0/ CMS 40 R2 and CME 20 R6.1/ CMS 40 R3.

1.1 Objectives

The manual is intended as an overview of the Ericsson micro base stations for the GSM 900 MHz, GSM 1800 MHz and GSM 1900 MHz.

The manual is divided into:

• General Information:

Preface

• Supported Conﬁgurations:

The chapters gives an overview of supported site conﬁgurations including earthing principles, battery backup times etc. and radio conﬁgurations with characteristics and capacity for each conﬁguration

• Speciﬁcations for the basestations and complementary products:

The chapters describes the architecture and speciﬁes the characteristics and performance of each product.

• Function Speciﬁcations:

Provides detailed information about the basestations from a functional point of view. The Function Speciﬁcations are customer-adapted and give a deeper understanding of the behavior of the basestations.

• BTS Parameter Limitations:

States conﬁgurable BTS parameters for RBS 2000. BTS parameters with limitations compared with the parameter ranges in the Abis O&M IWD are stated in this section.

• Glossary:

List of Abbreviations.

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Preface

1.2 Audience

Customer and Ericsson personnel involved in radio base station activities.

1.3 Customer Documentation Library

The user documentation for RBS 2301, RBS 2302 and MAXITE

consists of customer manuals and procedures divided up to suit different process events. The Library Overview contains the following information for each manual:

• Short description

• Recommendation of appropriate target group

• Product number

P003651A

Reference Manual

RBS 2301

User´s Guide

General Installation

Instructions

xx xxx

x x x

xxxx xxx xxxx xxx xxx xxx

xxx xxx xxx xxx xx xxx xxx

xxxx xx

x x x x xxxx xxx xxxx xxx xxx xxx xxx xxx xxx xxx xx xxx xxx xxxx xxx x x x xxxx xxx xxxx xxx xxx xxx xxx xxx xxx xxx xx xxx xxx xxxx xxx x x x xxxx xxx

xxxx xxx xxx xxx xxx xxx

xxx xxx xx xxx xxx

xxxx xxx x x x xxxx

xxx xxxx xxx xxx xxx xxx xxx xxx xxx xx xxx xxx xxxx xxx x x x xxxx xxx xxxx xxx xxx xxx xxx xxx xxx xxx xx xxx xxx xxxx xxx x x x xxxx xxx xxxx xxx xxx xxx xxx x xx xxx xxx xx xxx xxx xxxx xxx x x x xxxx

xxx xxxx xxx xxx xxx xxx xxx xxx xxx xx xxx xxx xxxx xxx x x x xxxx xxx xxxx xxx xxx xxx xxx xxx xxx xxx

Library Overview

RBS 2302

User´s Guide

Maxite

User´s Guide

Figure 1 The Customer documentation library

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Preface

1.4 Release History

Except editorial changes such as correction of spelling, grammar and layout, this manual has been revised as follows:

1.4.1 R4A to R5A

Table 1

Chapter Chapter heading Revised

sections and sub-sections

Description

1 Preface 1.1 Objectives and ﬁgure "The Customer

Documentation Library" updated.

1.4.1 Release History for R3A to R4A deleted and exchanged for R4A to R5A.

2 Site Conﬁgurations, RBS 2000 Micro A new chapter added 3 General Speciﬁcation for RBS 2000

Micro Conﬁgurations

Renamed to Radio Conﬁgurations, RBS 2000 Micro. Technical data concerning the RBS 2302 added.

5 Product Speciﬁcation for RBS 2302 A new chapter added 6 Product Speciﬁcation for Power and

Battery Cabinet

A new chapter added

12 Encryption 12.2.3 Section "Encryption Mode Change at

Mode Modify" added

20 Radio Transmission 20.3.4 TX Diversity: "Transmitter diversity..."

rewritten

29 External Alarms 29.3.2 RBS 2302, External alarms, maximum: 8

added

31 Climate Protection 31.2.1 Natural Convection renamed to Convection 39 EMC Capabilities Chapter renamed from "EMC Capabilities"

to "EMC Capabilities for RBS 2301"

40 EMC Capabilities for RBS 2302 A new chapter added 41 Environmental Capabiblities "RBS 2301" was removed from the title

Note: Chapters not listed in the table are unchanged.

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Site Conﬁgurations, RBS 2000 Micro

2 Site Conﬁgurations, RBS 2000 Micro

2.1 Terminology

AC box The AC box splits the incoming mains to

the site to different AC users in the site. This is external equipment that is delivered by the local support organization in each country or region.

Interfaces There are a number of interfaces in the

system: AC mains, DC 24 V, DC –48 V, External alarms, Alarms, Data,

Transmission, T,X,L-bus, RF Feeders N/A Not Applicable Mini Link E-micro Mini Link E-micro is a transmission unit

that sends transmission via the radio

interface. MLPU Mini Link Lightning Protection Unit PBC Power Battery Cabinet

The PBC converts AC mains to 24 V and

–48 V. It includes battery backup for RBS

and AAU. R1P1A1RL1PL1AL1/M1 Conﬁguration with: 1 RBS, 1 PBC, 1

AAU, 1 RLPU, 1 PLPU, 1 ALPU and

optional 1 Mini Link RBS 2302 RBS 2302 is a radiobasestation based on

the RBS 2301. It is developed for 6 TRX

functionality and prepared for MAXITE

installations. t

ext

means External temperature

2.2 System Overview

2.2.1 Site Conﬁgurations Overview

The tables below describe the different site conﬁgurations for RBS 2302 products.

Fan units and Mini Link conﬁgurations are considered to be optional and therefore marked with a “slash” ( / ), for example “/RF1” or ”/M1”).

Table 2 RBS 2302 Site Conﬁgurations

Short no. Slogan RBS 2302 PBC Fan Unit Mini Link

(R) (P) (RF,PF) (M) R1 2 TRX 1 /RF1 R2 4 TRX 2 /RF2

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Site Conﬁgurations, RBS 2000 Micro

R3 6 TRX 3 /RF3 R1P1 2 TRX external

backup

1 1 /RF1 /M1

R2P2 4 TRX external

backup

2 2 /RF2 /M1

R3P3 6 TRX external

backup

3 3 /RF3 /M1

Note: Not all conﬁgurations are described with a ﬁgure.

2.3 Conﬁguration

2.3.1 Site Conﬁgurations

RBS 2302 Conﬁgurations

P0035018

RBS 2302

Feeders to passive antenna

Transmission

Ext. alarms

AC Mains

Figure 2 2 TRX (R1)

P0035019

RBS 2302

Feeders to passive antenna

Transmission

Ext. alarms

RBS 2302

Feeders to passive antenna

Ext. alarms

AC Mains

AC box

T, X, L -bus

Figure 3 4 TRX (R2)

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Site Conﬁgurations, RBS 2000 Micro

P0035021

RBS 2302

Feeders to passive antenna

Transmission

Ext. alarms

RBS 2302

Feeders to passive antenna

Ext. alarms

AC Mains

T, X, L -bus

RBS 2302

Feeders to passive antenna

Ext. alarms

AC box

Figure 4 6 TRX (R3)

RBS 2302 Conﬁgurations with backup

P0035020

RBS 2302

Feeders to passive antenna

Transmission

Ext. alarms

PBC

Alarms

AC Mains

AC box

DC 24V

Figure 5 Extended backup, 2 TRX (R1P1)

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Site Conﬁgurations, RBS 2000 Micro

P003523

PBC1

AC box

AC Mains

Alarms

Ext. alarms

Transmission

RBS 2302

PBC2

T, X, L - bus

DC 24V

Alarms

DC 24V

RBS 2302

Feeders to passive antenna

Ext. alarms

Figure 6 Extended backup, 4 TRX (R2P2)

P003522

PBC1

AC box

AC Mains

Alarms

Ext. alarms

Transmission

RBS 2302

PBC2

T, X, L - bus

DC 24V

PBC3

Alarms

DC 24V

RBS 2302

Ext. alarms

Alarms

DC 24V

Feeders to passive antenna

Ext. alarms

Figure 7 Extended backup, 6 TRX (R3P3)

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Site Conﬁgurations, RBS 2000 Micro

+55C Conﬁgurations

P0035014

AC box

Ext. alarms

Transmission

Alarms

RBS fan unit

Feeders to passive antenna

AC Mains

RBS 2302

Figure 8 2 TRX, +55C (R1/RF1)

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Radio Conﬁgurations, RBS 2000 Micro

3 Radio Conﬁgurations, RBS 2000 Micro

This chapter describes the RBS 2000 Micro Radio Conﬁgurations and their associated performances.

3.1 References

/GSM:05.05/ GSM 05.05 (phase 2) version 4.13.0 /PCS/ The references /PCS:1-8/ are chapters in

the document: Volume 1, PCS 1900 Physical Layer 1

Speciﬁcation marked: JTC(AIR)94.08.01-231R3

3.2 Terminology

3.2.1 The Mobile Telephone System

Figure 9 RBS 2000 in Ericsson’s GSM System

The BSS (Base Station System) contains two functional entities:

• The BSC (Base Station Controller) handles the radio-related

functions such as hand over, management of the radio network resources, and cell conﬁguration data. It also controls radio frequency power levels in base stations and mobile stations.

• The BTS (Base Transceiver Station) is the radio equipment needed

to serve one cell. It consists of the antenna system, the radio frequency power ampliﬁers and all the digital signal processing equipment. RBS 2000 contains equipment for 1 − 3 BTSs.

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Radio Conﬁgurations, RBS 2000 Micro

Transport network

Antenna system

BTS Base Transceiver Subsystem

Site

Cell

BTS

01_0388A

RBS 2000

Figure 10 An RBS 2000 site with three cells

3.2.2 Antenna System

Is constituted by all RF transmission and reception antennas, directed to cover the same area or multicasting conﬁguration.

Antenna Reference Point (ARP)

Two ARP are deﬁned in this document; the RBS ARP and the AAU V

(1)

-ARP. The RBS ARP is the feeder connector on the RBS. The AAU V-ARP is the test connector after the network that connects

the outputs from different PAM:s. This network is used for test purposes only.

(1)

V=Virtual

3.2.3 Basic Conﬁguration

A maximum of two transceivers can be combined and connected to one antenna system.

The basic conﬁguration may be multiplied or used in combination with other basic conﬁgurations to build the needed site equipment.

3.2.4 Deﬁnition

The deﬁnition of the basic conﬁguration type thus refers to CDU_type. <Basic_Conﬁg>::=<X><F>d_<A>.<T>\<N>

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Radio Conﬁgurations, RBS 2000 Micro

P003437A

CDU type (M=micro) Frequency band (900, 1800, 1900) Filter (d=duplex) Number of antenna ports Number of transcievers Active Antenna (A) or Highway (H) config.

M 9 d _ 2 . 2 / N

Figure 11 Type deﬁnition example

Type deﬁnitions: <N> ::= <Variant> ::= A, H

A = Active Antenna H = Active Antenna Highway Congifuration

<X> ::= <Basic CDU-type> ::=M

M = Microbase RBS

<F> ::= <Frequency Band> ::=9/18/19

9 = 900 MHz 18 = 1800 MHz 19 = 1900 MHz

<option>::=d

d: = Duplexer included in CDU

3.3 Frequency Bands

Uplink 890 - 915 MHz

GSM 900

Downlink 935 - 960 MHz

Uplink 1710 - 1785 MHz

GSM 1800

Downlink 1805 - 1880 MHz

Uplink 1850 - 1910 MHz

GSM 1900

Downlink 1930 - 1990 MHz

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Radio Conﬁgurations, RBS 2000 Micro

3.4 General

RBS Conﬁgurations is the designated expression for the RF parts integrated in the BTS.

The functionality is:

• The output signal from one or more transmitters are combined

into the same antenna system, which can be utilized as a TX/RX antenna.

• The received signal from the receive antenna system, which can

be utilized as a TX/RX antenna, is distributed to receivers belonging to one RBS.

3.5 Conﬁgurations

3.5.1 TX Output Power

The value given for the RBS output power for the different conﬁgurations below is the minimum RBS output power when the transmitter is set for maximum nominal power (P0).

The RBS output power is measured at the TX reference point, and it is dependent on the TX combining and ﬁltering parts.

The tolerance for the RBS output power at the different settings is in compliance with /GSM:05.05:4.1.2/ for GSM 900 and GSM 1800, and / PCS:5.3.3/ for GSM 1900.

When two or more transmitters are combined to one antenna, the transmitters must be operated with a minimum of 400 kHz separation between the centre frequency of adjacent carriers. This limitation is not caused by the combiner but the RBS itself.

With TX diversity conﬁgured both transmitters use the same ARFCN. The maximum nominal power, P0, measured on the cabinet output RF

connector (which in this case corresponds to the TX Reference Point) is minimum +32 dBm. This output power level is valid for all frequency bands.

With TX diversity conﬁgured the output power is minimum +32 dBm at each ARP.

Nominal A-bis conﬁguration power parameters for the Micro Base Station RBS 2301:

900 MHz 21 - 33 (dec) 1800 MHz 21 - 33 (dec) 1900 MHz 21 - 33 (dec)

Note: Only steps by 2 is conﬁgureable (from the highest value). TX diversity conﬁguration power parameters for the Micro Base Station

RBS 2301:

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1800 MHz: 36 (dec) 1900 MHz: 36 (dec)

3.5.2 RX Description

The receiver system performance is dependent on the conﬁguration.

Actual sensitivity level

Is deﬁned in and complying with the level where RBS meets the reference sensitivity performance deﬁned in:

- /GSM:05.05:6.2 / for GSM 900 and GSM 1800

- /PCS:4/ and /PCS:5.1.1/ for GSM 1900.

Radio reception

The receiver sensitivity is reduced when a third order intermodulation product, generated by the radio transmitters in the RBS, is received at the same RCFN as the useful signal.

This occurs when the distance in frequency between two simultaneous transmitters is chosen in a way that a third order intermodulation product is generated at the same frequency as the operating frequency of one of the receivers in the RBS.

Note: In RBS 2301 the receiver sensitivity will be decreased by 1

dB when a third order transmitter intermodulation product coincides in frequency with an active frequency used by the receiver.

3.5.3 Isolation values

The isolation requirements between two antennas belonging to the same RBS is reduced and shall at least be:

- for GSM 900: 15 dB

- for DCS 1800 MHz and PCS 1900 MHz: 20 dB

- for Maxite, GSM 1800 and GSM 1900: 30 dB

3.5.4 Omnidirectional Antenna

GSM 900

Beamwidth: For omnidirectional antennas, speciﬁcation

on beamwidth is replaced by the speciﬁcation on gain.

Space Diversity Separation: The two antennas has a horizontal

separation of at least 0.5 wavelength c/c or a vertical separation of 1.0 wavelength c/c.

Power Handling: The Antenna is able to handle a

continuous output of 10 W.

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Radio Conﬁgurations, RBS 2000 Micro

GSM 1800/ GSM 1900

Beamwidth: For omnidirectional antennas, speciﬁcation

on beamwidth is replaced by the speciﬁcation on gain.

Space diversity separation: The two antennas has a horizontal

separation of at least 0.5 wavelengths c/c or a vertical separation of 1.0 wavelengths c/c.

Power Handling: The antenna is able to handle a continuous

output power of 10 W.

3.5.5 Sector Antenna

GSM 900

For sector antennas, the beamwidth is speciﬁed both as the traditional

−3 dB beamwidth and also as a beamwidth at the 0 dBi (isotropic) level:

Horizontal:

Min. 80



at the −3 dB point

Min. 180



at the -10 dB level

Vertical:

Max. 75



at the −3 dB point

The antenna is able to handle a continuous output power of 10 W.

GSM 1800/ GSM 1900

For sector antennas, the beamwidth is speciﬁed both as the traditional

−3 dB beamwidth and also as a beamwidth at the 0 dBi (isotropic) level:

Horizontal:

Min. 60



at the -3 dB point

Min. 120



at the -10 dB level

Vertical:

Max. 50



at the -3 dB point

The antenna is able to handle a continuous output power of 10 W.

3.5.6 Supported Basic Conﬁgurations

RBS 2301

The following Basic Conﬁgurations are supported:

Table 3 RBS 2301 Supported Conﬁgurations

No. Cab. Conﬁg/band GSM 900 GSM 1800 GSM 1900 1 M9d_2.2

(1)

x 1 M9d_2.2 x 1 M9d_1.2 x 1 M18d_2.2

(1)

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Radio Conﬁgurations, RBS 2000 Micro

1 M18d_2.2 x 1 M18d_1.2 x 1 M19d_2.2

(1)

x 1 M19d_2.2 x 1 M19d_1.2 x

Note:

(1)

1 TRX only

RBS 2302

The following Basic Conﬁgurations are supported:

Table 4 RBS 2302 Supported Conﬁgurations

No. Cab. Conﬁg/band GSM 900 GSM 1800 GSM 1900 1 M9d_2.2 x 2 M9d_4.4 x 3 M9d_6.6 x 1 M9d_1.2 x 1 M18d_2.2 x 2 M18d_4.4 x 3 M18d_6.6 x 1 M18d_1.2 x 1 M19d_2.2 x 2 M19d_4.4 x 3 M19d_6.6 x 1 M19d_1.2 x

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Radio Conﬁgurations, RBS 2000 Micro

3.6 Basic Conﬁguration GSM 900 MHz, M9d_2.2

Ant.

TX1 / RXA

TX2

TX1

RXA

RXB RXA

RXB

CDU

03_0348a

TX2 / RXB

TRX

RXDA <

FILTER

UNIT

DUPLEX

Figure 12 Basic Conﬁguration M9d_2.2

3.6.1 Characteristics M9d_2.2

Max. no. of TRXs 2 No. of feeders 2 No. of antennas 2 Antenna conﬁguration TX/RX + TX/RX

3.6.2 Capacity M9d_2.2

The capacity is deﬁned at the Tx and Rx reference points marked with X.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The equivalent output power with TX

diversity conﬁgured is minimum +35 dBm.

Capacity Radio Reception: The actual sensitivity level is −104 dBm,

or better.

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Radio Conﬁgurations, RBS 2000 Micro

3.6.3 Capacity M9d_2.2 with Integrated Omnidirectional Antenna

The typical antenna gain for the omnidirectional antenna is -1 dBi for the GSM band.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The minimum corresponding Effective

Isotropic Radiated Power is thus +31 dBm EIRP for the above antenna.

Capacity Radio Reception: The actual sensitivity level is −104 dBm

or better. The corresponding sensitivity level with

Omnidirectional antenna is −103 dBm, or better.

3.6.4 Capacity M9d_2.2 with Integrated Sector Antenna

The typical antenna gain for the sector antenna is 6 dBi for the GSM 900 band.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The maximum corresponding Effective

Isotropic Radiated Power is thus +38 dBm EIRP for the above antenna.

Capacity Radio Reception: The actual sensitivity level is −104 dBm,

or better. The corresponding sensitivity level with

Sector antenna is −110 dBm or better.

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Radio Conﬁgurations, RBS 2000 Micro

3.7 Basic Conﬁguration GSM 900 MHz, M9d_1.2

Ant.

output

TX / RX

TX2

TX1

RXA

RXB RXA

RXB

CDU

04_0348a

MultiCasting

Box

ohm

TRX

RXDA <

FILTER

UNIT

DUPLEX

Figure 13 Basic Conﬁguration M9d_1.2

3.7.1 Characteristics M9d_1.2

Max. no. of TRXs 2 No. of feeders 1 No. of antennas 1 Antenna conﬁguration TX/RX Loss TRX-TX Reference point Max. 4.5 dB in each output/input Limitations No RX diversity

3.7.2 Capacity M9d_1.2 (with Multicasting Box)

The capacity is deﬁned at the Tx and Rx reference points marked with X.

Capacity Radio Transmission: The output power from 1 TX to each TX/

RX output/input is minimum +27.5 dBm.

Capacity Radio Reception: The actual sensitivity level is −99.5 dBm,

or better.

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Radio Conﬁgurations, RBS 2000 Micro

3.8 Basic Conﬁguration GSM 1800 MHz, M18d_2.2

Ant.

TX1 / RXA

TX2

TX1

RXA

RXB RXA

RXB

06_0348a

TX2 / RXB

TRX

RXDA <

FILTER

UNIT

DUPLEX

Figure 14 Basic Conﬁguration M18d_2.2

3.8.1 Characteristics M18d_2.2

Max no. of TRXs 2 No. of feeders 2 No. of antennas 2 Antenna conﬁguration TX/RX + TX/RX

3.8.2 Capacity M18d_2.2

The capacity is deﬁned at the Tx and Rx reference points marked with X.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The equivalent output power with TX

diversity conﬁgured is minimum +35 dBm.

Capacity Radio Reception: The actual sensitivity level is −104 dBm,

or better.

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Radio Conﬁgurations, RBS 2000 Micro

3.8.3 Capacity M18d_2.2 with Integrated Omnidirectional Antenna

The typical antenna gain for the omnidirectional antenna is +1 dBi for the GSM 1800 band.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The maximum corresponding Effective

Isotropic Radiated Power is thus minimum +33 dBm EIRP for the above antenna.

Capacity Radio Reception: The actual sensitivity level is −104 dBm

or better. The corresponding sensitivity level with

Omnidirectional antenna is −105 dBm, or better.

3.8.4 Capacity M18d_2.2 with Integrated Sector Antenna

The typical antenna gain for the sector antenna is +8.5 dBi for the GSM 1800 band.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The maximum corresponding Effective

Isotropic Radiated Power is thus minimum +40.5. dBm EIRP for the above antenna.

Capacity Radio Reception: The actual sensitivity level is −104 dBm

or better. The corresponding sensitivity level with

Sector antenna is −112.5. dBm, or better.

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Radio Conﬁgurations, RBS 2000 Micro

3.9 Basic Conﬁguration GSM 1800 MHz, M18d_1.2

Ant.

output

TX / RX

TX2

TX1

RXA

RXB RXA

RXB

CDU

07_0348a

MultiCasting

Box

ohm

TRX

RXDA <

FILTER

UNIT

DUPLEX

Figure 15 Basic Conﬁguration M18d_1.2

3.9.1 Characteristics M18d_1.2

Max. no. of TRXs 2 No. of feeders 1 No. of antennas 1 Antenna conﬁguration TX/RX Loss TRX-TX Reference point Max. 4.5 dB in each output/input Limitations No RX diversity

3.9.2 Capacity M18d_1.2 (with Multicasting Box)

The capacity is deﬁned at the Tx and Rx reference points marked with X.

Capacity Radio Transmission: The output power from 1 TX to each TX/

RX output/input is minimum +27.5 dBm.

Capacity Radio Reception: The actual sensitivity level is −99.5 dBm,

or better.

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Radio Conﬁgurations, RBS 2000 Micro

3.10 Basic Conﬁguration GSM 1900 MHz, M19d_2.2

Ant.

TX1 / RXA

TX2

TX1

RXA

RXB RXA

RXB

09_0348a

TX2 / RXB

TRX

RXDA <

FILTER

UNIT

DUPLEX

Figure 16 Basic Conﬁguration M19d_2.2

3.10.1 Characteristics M19d_2.2

Max. no. of TRXs 2 No. of feeders 2 No. of antennas 2 Antenna conﬁguration TX/RX + TX/RX

3.10.2 Capacity M19d_2.2

The capacity is deﬁned at the Tx and Rx reference points marked with X.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The equivalent output power with TX

diversity conﬁgured is minimum +35 dBm.

Capacity Radio Reception: The actual sensitivity level is −104 dBm,

or better.

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Radio Conﬁgurations, RBS 2000 Micro

3.10.3 Capacity M19d_2.2 with integrated Omnidirectional Antenna

The typical antenna gain for the omnidirectional antenna is 1 dBi for the GSM 1900 band.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The maximum corresponding Effective

Isotropic Radiated Power is thus minimum +33 dBm EIRP for the above antenna.

Capacity Radio Reception: The actual sensitivity level is −104 dBm

or better. The corresponding sensitivity level with

Omnidirectional antenna is −105 dBm, or better.

3.10.4 Capacity M19d_2.2 with integrated Sector Antenna

The typical antenna gain for the sector antenna is 9 dBi for the GSM 1900 band.

Capacity Radio Transmission: The output power with 1 TX to one TX/

RX output is minimum +32 dBm. The maximum corresponding Effective

Isotropic Radiated Power is thus minimum +41 dBm EIRP for the above antenna.

Capacity Radio Reception: The actual sensitivity level is −104 dBm

or better. The corresponding sensitivity level with

Sector antenna is −113 dBm, or better.

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Radio Conﬁgurations, RBS 2000 Micro

3.11 Basic Conﬁguration GSM 1900 MHz, M19d_1.2

Ant.

output

TX / RX

TX2

TX1

RXA

RXB RXA

RXB

CDU

10_0348a

MultiCasting

Box

ohm

TRX

RXDA <

FILTER

UNIT

DUPLEX

Figure 17 Basic Conﬁguration M19d_1.2

3.11.1 Characteristics M19d_1.2

Max. no. of TRXs 2 No. of feeders 1 No. of antennas 1 Antenna conﬁguration TX/RX Loss TRX-TX Reference point Max. 4.5 dB in each output/input Limitations No RX diversity

3.11.2 Capacity M19d_1.2 (with Multicasting Box)

The capacity is deﬁned at the Tx and Rx reference points marked with X.

Capacity Radio Transmission: The output power from 1 TX to each TX/

RX output/input is minimum +27.5 dBm.

Capacity Radio Reception: The actual sensitivity level is −99.5 dBm

or better.

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Product Speciﬁcation for RBS 2301

4 Product Speciﬁcation for RBS 2301

This chapter will describes the architecture, and speciﬁes the characteristics and performance of the RBS 2301.

4.1 General

The RBS 2301 satisﬁes the need for ’hot spot’ capacity in small areas, such as part of a city centre or a shopping mall, as well as ’ﬁll in’ coverage.

The main focus with this product is to reduce site cost and make it easier for operators to ﬁnd sites, which will ensure operator proﬁtability of a micro cell network.

To be able to support the idea of a small RBS that can be located almost anywhere, some functional limitations has been made:

• Low output power.

• No antenna supervision (VSWR).

• No RF cable supervision.

• No expansion possibility.

The RBS is designed to fulﬁl applicable parts of the GSM and JTC speciﬁcations.

The weather-proof cabinet and design make it ideal for installation indoor, outdoor, on poles, walls or mast.

Integral antennas can be ordered as omnidirectional or sector antennas, except from this there is always a possibility to connect external antennas.

The base colour of the RBS is Grey (NCS S2502-R), but there is a possibility to order the front sun-shields in different colours, which will make the RBS more discrete.

The RBS is built up by the following main physical units: Mounting Base, Cabinet, Antennas and Sun-shield. This will support a routine of installing the Mounting Base prior to the Cabinet arrival.

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Product Speciﬁcation for RBS 2301

01_0330A

Front sunshield

Cabinet

Optional Sectorantenna

Optional Omnidirectionalantenna

Mounting base

Optional Multicasting Box

Figure 18 Main physical units

The prime technical concerns have been to implement a RBS that:

• has a small size (volume and weight), and an appearance suitable

for a discrete installation ("landlord friendly").

• has high channel capacity, two transceivers giving total of 15

trafﬁc channels if conﬁgured to one cell, or 7 + 7 trafﬁc channels if conﬁgured to two cells.

• is characterized by low need for preventive maintenance.

• has high MTBF

• has versions for the different system standards GSM 900, GSM

1800 and GSM 1900.

• includes all functions needed for a complete installation of a radio

base station, including standard interface G703 E1 or T1 (DS1) to transmission network, AC mains power, battery backup and antennas.

• support Linear Cascade connection on the transmission interface.

• is possible to install by one person.

• can be installed by ordinary skilled installation personnel.

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Product Speciﬁcation for RBS 2301

4.2 Product Architecture

4.2.1 Hardware units

P003725A

PSU

TCB

LVF

DXB

TXU

RXDA

RXU

Figure 19 Hardware units in cabinet

DXB Distribution Switching Board

The DXB (1 per RBS) is the central control unit for the RBS and supports the transmission interface.

OMT Operation and Maintenance Terminal

The OMT is a PC based terminal used during installation and maintenance.

TCB Transceiver Control Board

The TCB (2 per RBS) includes equipment related to signal processing for up to two radio carriers.

TXU Transmitter Unit

The TXU (2 per RBS) contains equipment for transmission on one radio carrier.

RXU Receiver Unit

The RXU (2 per RBS) contains equipment for reception on one radio carrier.

RXDA Receiver Divider Ampliﬁer

The RXDA (1 per RBS) contains equipment for low noise ampliﬁcation of the received radio carrier(s) and dividing each incoming RX into two output carriers.

FU Filtering Unit

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Product Speciﬁcation for RBS 2301

The FU (1 per RBS) is the interface between the transmitters, receivers and the antenna system.

LVF Low Voltage Filter

The LVF contains components for voltage ﬁltering

PSU Power Supply Unit

The PSU (1 per RBS), which rectiﬁes the incoming AC mains to regulated DC voltages, controls and supervises the battery and supervises the temperatures

inside the cabinet. Climate Equipment Heater to heat the RBS at low temperature. Battery The battery is an internal entity and is

replaceable without disturbing trafﬁc

handling Connection Unit The connection unit contains components

for lightning and EMC protection. It also

includes fuses, AC mains and battery

switch as well as plinths for the external

interfaces except for antenna feeders. Distribution Plane The distribution plane interfaces the DXB,

the TCB, the TXUs, the RXUs and the

PSU. It also contains the buttons and

indicators for the RBS.

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Product Speciﬁcation for RBS 2301

DC volt Local B

Timing B

OMT

alarm

DC volt

Local B

Timing B

CDU B

RX TX

TX TX

DC volt

RX RX

DC volt

CDU

Ext. alarm G 703 G 703 G 703 G 703 Ext. alarm AC Power

TX TX

RX RX

TX/RX A

Duplex

TX/RX B

RX A RX A RX B RX B

LVF

PSU

Connection unit

Heater

Battery

AC power

alarm

RXDA

RXU

TXU

Distribution panel

DXB

TCB

07_0330B

DC volt

MMI

OMT

Antenna signals

Figure 20 Overview

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Product Speciﬁcation for RBS 2301

4.3 Conﬁguration

4.3.1 Options

The RBS is a ﬂexible product which can be ordered according to different customer needs.

The following options are available:

• Mast mounting ﬁxture

• Internal high precision oscillator

• Integral antennas

• Multicasting box

Multicasting functionality: One feeder system which can be used for a distributed antenna system.

Sun-shield

The following optional colours are available for the front sun-shield. NCS S3010-G80Y (Olive green)

NCS S2020-R70B (Sky blue) NCS S2030-Y40R (Brick red) NCS S2040-Y20R (Ochre) NCS S1010-Y20R ( Light yellow)

According to NCS standard.

4.3.2 Variants

Conﬁgurations

The RBS will support the following basic conﬁguration alternatives:

Table 5

GSM 900 GSM 1800 GSM 1900

M9d_1.2 M18d_1.2 M19d_1.2 M9d_2.2 M18d_2.2 M19d_2.2

The performance for each conﬁguration is described in ref. /GS-Conﬁg/.

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Product Speciﬁcation for RBS 2301

02_0345A

CDU type Frequency band Duplexer Number of antenna ports Number of transcievers

M 9 d _ 2 . 2

Figure 21 How to read the code

Table 6

Object RBS Variants

Trafﬁcal capacity 2 TRX Encryption A5/1, A5/2 Transport Network Interface 1.5 Mbit/s, 100 Ohm

2.0 Mbit/s, 75 Ohm

2.0 Mbit/s, 120 Ohm

Filter Duplex

Integral Antennas

The following selection are available: Omnidirectional or Sector.

4.4 Combinations

Possible combinations are described in Ordering Information.

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Product Speciﬁcation for RBS 2301

4.5 Transmission Modes

The RBS 2301 can be conﬁgured for linear cascade mode and stand alone mode. The conﬁguration is performed by means of the OMT.

When used as stand alone, PCM port A shall be connected towards the BSC. In this mode, PCM port B cannot be used.

When used in linear cascade mode (multidrop), the RBSs are connected so that each RBS uses its port A towards the BSC and port B towards the next RBS. That RBS is connected in the same way with port A towards the previous RBS (and indirectly the BSC) and port B towards the next RBS etc.

Only RBSs that support multidrop can be included in the multidrop chain. Figure 22 on page 44 shows a multidrop chain with three RBSs.

The multidrop function handles 64 kbit/s timeslots only. All RBSs have dedicated timeslots.

BSC

01_0345A

Figure 22 Multidrop chain

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Product Speciﬁcation for RBS 2301

4.6 Interface and Connection

4.6.1 External Connections

AC Mains

Type of connections: Screw terminal for 4 X max.2.5 mm² Cable gland capacity:

1 times Ø 14 mm

External Alarms

Type of connections: Screw terminal for 8 X max. 1.5 mm² Cable gland capacity:

1 times Ø 10 mm

Number of alarms: 4

Antenna Connectors

Type of connectors: TNC (receptacle) female.

Note: When using integral antennas, Cables and connectors are

included, these connection are placed on the cabinet.

Transmission

Type of connections: alternative

1. Coax Cable 75 Ohm

2. 100/120 Ohm

Earthing

Central earth terminal point M8 thread.

4.6.2 Internal Connections

OMT

Type of connections: 9 pin D-sub (receptacle) female.

4.6.3 Test Interface

The RBS is equipped with test ports for connection of external instruments. The following signal are available at test ports:

13 MHz Reference

Type of connectors: SMB connector (receptacle) male.

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Product Speciﬁcation for RBS 2301

4.6.4 Operator Interface

When opening the Mounting Base there is an MMI area available containing the operational interface which includes the LED’s and buttons listed below.

Indicators (LEDs)

Fault One or more faults, equals BS fault. Operational At least one TRX operational. Local mode RBS in local mode. Reduced capacity One of two TRX’s operational. Test TRX1 Result from TRX1 test operation. Test TRX2 Result from TRX2 test operation. AC Power on AC Power is switched on to RBS. Battery fault Lowbattery DC voltage, battery absent. External alarm One or more external alarm active.

Buttons

CPU reset Local/remote mode Test Operation initiation

Switches

Battery AC Mains

Barcodes Signs

The bar code sign for product identiﬁcation is readable without disturbing the RBS function.

4.7 Product Requirements

4.7.1 Appearance

Ericsson products are designed to appear as one physical unit, inconspicuous, pleasant and good-looking. The standard colour of the RBS is Grey.

The front cover of the RBS which is designed as a sun-shield may be ordered in different colours to make the RBS even more inconspicuous.

There is an optional integrated antenna system which will support the idea that the RBS and antenna site are the same.

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Product Speciﬁcation for RBS 2301

4.7.2 Mechanical Structure

Replaceable Units

The RBS consists of the following replaceable units:

• Cabinet

• Mounting base

• Integral antennas

• Sun-shield

• Batteries

• Connection unit

• Wall ﬁxture

• Mast/pole ﬁxture

Labels

All signs are placed to fulﬁl the requirements behind the purpose and reason for the signs. And all signs that are needed for identiﬁcation of the product and its compliance are readable without disturbing the RBS function.

4.7.3 Dimension and Weight

Volume

The total volume of a complete RBS site without cabling, 33 l.

Size

(HxWxD): 535x408x160 mm. (without integral antennas). (HxWxD): 535x408x210 mm. (with Sector Antenna). (HxWxD): 607x408x160 mm. (with Omnidirectional Antenna).

Weight

The total weight is the sum of the following handling units:

Cabinet 18 kg (incl. internal battery) Mounting Base 6.5 kg (incl. Sun-shield) Wall bracket 3 kg Omni Antenna 0.5 kg Sector Antenna 2 kg Total Weight 30 kg

(A temporary lifting device can be attached during installation.)

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Product Speciﬁcation for RBS 2301

4.7.4 Hardware Characteristics

Acoustical Noise

The RBS will not contribute to the acoustical noise in the surroundings.

Vandal Resistance

The RBS will appear as vandal resistant and unauthorized intrusion will not be possible without damaging the unit.

Package Material

The package material is recyclable.

Handling Robustness

The RBS main cabinet is designed to accept intermediate placing on the ground during installation and maintenance work.

4.7.5 Environment

Operation

The RBS is designed to endure the requirement for “outdoor mast mounted equipment”.

Temperature range:

-33



- +45C

For details see: Section "Environmental Capabilities RBS 2301"

Solar Radiation

The RBS is designed to withstand the additional heat from solar radiation in it’s speciﬁed environment.

Transport

The RBS is designed to endure the requirement for transport.

Temperature range:

-40



C - +70C

For details see: Section "Environmental Capabilities RBS 2301"

Storage

The RBS is designed to endure the requirement for storage.

Temperature range:

-25



C - +55C

For details see: Section "Environmental Capabilities RBS 2301"

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Product Speciﬁcation for RBS 2301

Handling

The RBS is designed to endure the requirement for Handling. Handling of RBS parts during installation and maintenance.

Temperature range:

-40



C - +70C

For details see: Section "Environmental Capabilities RBS 2301"

In addition to this requirement the RBS 2301 will endure topple. Minor damages of the cabinet i.e. a broken corner of a cooling ﬁn at topple will not disturb the function of the RBS.

4.7.6 Climate Protection

Climate Protection Principle

The climate protection maintains the internal temperature within allowed range for the units in the RBS.

The climate protection of the RBS is handled by a combination of:

• Natural convection with the help of cooling ﬁns

• Conductional heating

Heating Capacity

The system have the capacity to heat the RBS from:

• −33



C to starting conditions within 30 minutes

• −15



C to starting conditions within 15 minutes

If the environmental conditions are: no wind or accumulated ice or snow on the RBS.

Ingression

The RBS fulﬁl the IP-55 requirements according to the standard IEC

529.

4.7.7 Power Supply

Supply Voltage

The RBS can be connected to mains supply voltage with Nominal:

200 - 250 VAC ±10 % 50 Hz ±10 % 100 - 127 VAC ±10 % 60 Hz ± 8 % 200/100 - 240/120 ±10 % 60 Hz ± 8 %

The RBS will support installation with: Single-phase (two-wire; earthed end of phase). Single-phase (three-wire; earthed mid point).

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Product Speciﬁcation for RBS 2301

Single-phase (three-wire; separate PE and N conductor). According to TN, TT and IT power system.

Power Consumption

Normal operation, both TRX’s transmitting on full output power. (at 230 V nominal mains supply)

150 VA

Maximum power consumption: 500 VA (only with activated heater).

Battery Backup

The RBS will survive interruptions on mains supply during at least 3 minutes. The RBS will maintain full performance during the backup time if the battery is fully charged. The battery will be recharged to at least 80% of its capacity within 15 hours.

For longer backup time an external UPS may be used.

4.7.8 Type Approval

Type Approval Standard

The product fulﬁls the required type approvals from: GSM 11.20 or GSM 11.21 standard JTC standard FCC rules and regulations. According to requirements in Section Product Safety Requirements RBS

2000.

4.7.9 Dependability

Preventive Maintenance

These preventive maintenance conditions must be fulﬁlled to guarantee the availability of the RBS.

Action Interval

Change of battery < 5 years Change of lightning protection equipment <10 years Calibration of "optional" synchronisation oscillator < 3 years

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Product Speciﬁcation for RBS 2301

4.7.10 Installation

A quick and easy installation procedure is provided. If the installation preconditions are met, the RBS can be installed in less than 30 minutes. A minimum of tools and instruments are required when installing an RBS.

Preconditions

•

The initiation of the BSC is prepared

• The transport network available

at the site

• Mains power available at site

• Preinstalled antennas and feeders are available

• Wall ﬁxture preinstalled

• Friendly geographic location and environment (means higher than

-10



C, no precipitation and easy access to the site)

"available" means: accessible and with speciﬁed function.

Installation Scenario

To support the idea of a quick and smooth installation scenario, the RBS installation work can be divided in to two steps:

• Preinstallation. Installation of the Mounting Base, antennas and

all necessary cabling ( AC mains, transmission and alarms).

• Installation and Commissioning. Installation of the Cabinet

including all parts according to customer ordering. However the installation is possible to carry out in one site visit. The manual operations at installation are few and easy, this is valid also

when connecting external cables. There is no need for an OMT on site, during installation work.

Site Installation Requirement

When installing more than one RBS at the same site, the RBS’s must be separated. The separation is necessary because of antenna isolation requirements and to provide sufﬁcient working space.

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02_0330A

1000 mm

500mm

500 mm

250 mm

500 mm

400 mm

Figure 23 Required separation between RBSs

• Min separation 0.5 m side by side

• Min separation 0.5 m above/below

• Min separation 0.4 m back to back

Free space is required around the RBS for installation and maintenance. For a simple installation, following distances are recommended:

• Front: 1.0 m

• Side: 0.25 m

• Top: 0.5 m

• Bottom: 0.5 m

4.7.11 Production

The concept for the RBS supports production according to customer choice from the ordering information plan.

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4.8 Future Expansion

4.8.1 Future Expansion Possibilities

• Datacommunication, i.e. 14.4 kbit/s and GPRS CS-2.

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5 Product Speciﬁcation for RBS 2302

This chapter describes the architecture of the RBS 2302 and speciﬁes its the characteristics and performance.

5.1 Terminology

TN Power System TN Power System is a power distribution

system having one point directly earthed. The exposed conductive parts of the installation are connected to that point by protective earth connectors.

TT Power System TT Power System is a power distribution

system having one point directly earthed. The exposed conductive parts of the installation are connected to earth electrodes electrically independent of the earth electrodes of the power system.

IT Power System IT Power System is a power distribution

system having no direct connection to earth. The exposed conductive parts of the electrical installation are earthed.

5.2 General

The RBS 2302 satisﬁes the need for ’hot spot’ capacity in small areas, such as part of a city centre or a shopping mall, as well as ’ﬁll in’ coverage.

The main focus with this product is to reduce site cost and make it easier for operators to ﬁnd sites, which will ensure operator proﬁtability of a micro cell network.

The RBS 2302 can be expanded with up to six transceivers by adding extra RBS 2302 cabinet to a site.

To be able to support the idea of a small RBS that can be located almost anywhere, some functional limitations has been made:

• No antenna supervision.

• No RF cable supervision.

The weather-proof cabinet and design make it ideal for installation indoor, outdoor, on poles, walls or masts.

Integral antennas can be ordered as omni or sector antennas. Apart from this there is always a possibility to connect external antennas.

A multicasting box is provided to make it possible to combine the antenna signals from two TRXs into one antenna feeder.

For sites located in places with extreme heat an active cooling device may be provided as an option.

An extended OMT port (a permanent cable from the RBS to a more convenient place) is provided as an option.

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Product Speciﬁcation for RBS 2302

The base colour of the RBS is Grey (NCS S2502-R), but it is possible to order the front sun-shields in different colours, which can make the RBS more discrete depending on the environmental surroundings.

The RBS consists of the following main physical units: Mounting Base, Cabinet, Antennas and Sun-shield. This will support a routine of installing the Mounting Base prior to the Cabinet arrival.

P003472A

Extended OMT cable Transmission

Bus extension

Master

Cabinet

Extension

Cabinet

Extension

Cabinet

Figure 24 Six TRX site

The prime technical concerns have been to implement a RBS that:

• has a small size (volume and weight), and an appearance suitable

for a discrete installation ("landlord friendly").

• has high channel capacity, two transceivers giving total of 15

trafﬁc channels if conﬁgured to one cell. The RBS 2302 may be conﬁgured with up to six transceivers in one cell by adding extra RBS 2302 as extension cabinets.

• is characterized by low need for preventive maintenance.

• has high MTBF

• has versions for the different system standards GSM 900, GSM

1800 and GSM 1900.

• includes all functions needed for a complete installation of a radio

base station, including standard interface G703 2048 kbit/s or DS1 1544 kbit/s to transmission network, AC mains power, battery backup and a choice of internal or external antennas.

• supports Linear Cascade connection on the transmission interface.

• has an extended OMT-port that makes it possible for connection

of the OMT at ground level if the RBS 2302 is mounted high on a wall or a pole.

• includes an optional fan-unit which extends the upper temperature

limit to +55 C



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• has space for a transmission module to support other transmission

protocols than G703 or DS1.

• can be installed by one person.

5.3 Product Architecture

5.3.1 Main Physical Units

Mountingbase

Sector antenna

omni radome/antenna

Interface box: Interface board Transmission filter board

Cabinet

Connection board

Installation

box

Sunshield

P003373A

Figure 25 Main Physical Units

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5.3.2 Hardware units

P003725A

PSU

TCB

LVF

DXB

TXU

RXDA

RXU

Figure 26 Hardware Units in the Cabinet

DXB Distribution Switching Board

The DXB (1 per RBS) is the central control unit for the RBS and supports the transmission interface.

OMT Operation and Maintenance Terminal

The OMT is a PC based terminal used during installation and maintenance.

TCB Transceiver Control Board

The TCB (2 per RBS) includes equipment related to signal processing for up to two radio carriers.

TXU Transmitter Unit

The TXU (2 per RBS) contains equipment for transmission on one radio carrier.

RXU Receiver Unit

The RXU (2 per RBS) contains equipment for reception on one radio carrier.

RXDA Receiver Divider Ampliﬁer

The RXDA (1 per RBS) contains equipment for low noise ampliﬁcation of the received radio carrier(s) and dividing each incoming RX into two output carriers.

FU Filtering Unit

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The FU (1 per RBS) is the interface between the transmitters, receivers and the antenna system.

LVF Low Voltage Filter

The LVF contains components for voltage ﬁltering.

PSU Power Supply Unit

The PSU (1 per RBS), which rectiﬁes the incoming AC mains to regulated DC voltages, controls and supervises the battery and supervises the temperatures inside the cabinet.

Climate Equipment Heater to heat the RBS at a low

temperature.

Battery The battery is an internal entity and is

replaceable without disturbing trafﬁc handling.

Connection Unit The connection unit contains components

for lightning and EMC protection. It also includes fuses, AC mains and battery switch as well as plinths for the external interfaces except for antenna feeders.

Distribution Plane The distribution plane interfaces the DXB,

the TCB, the TXUs, the RXUs and the PSU. It also contains the buttons and indicators for the RBS.

5.4 Conﬁgurations

5.4.1 Options

Options are conﬁgurations that require additional hardware.

Appearance

The following optional colours are available for the front sun-shield besides the standard colour.

NCS S2010-B70G (Olive green) NCS S1020-R70B (Sky blue) NCS S1020-Y90R (Brick red) NCS S1020-Y50R (Brown) NCS S1020-Y10R (Yellow)

According to NCS standard.

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5.4.2 Variants

Radio Conﬁgurations

The RBS will support the following basic conﬁguration alternatives:

Table 7

GSM 900 GSM 1800 GSM 1900

M9d_2.2 M18d_2.2 M19d_2.2

The performance for each conﬁguration is described in chapter Radio Conﬁgurations, RBS 2000 Micro.

02_0345A

CDU type Frequency band Duplexer Number of antenna ports Number of transcievers

M 9 d _ 2 . 2

Figure 27 How to read the code

Table 8

Object RBS Variants

Trafﬁc capacity 2 TRX Encryption A5/1, A5/2 Transport Network Interface 1.5 Mbit/s, 100 Ohm

2.0 Mbit/s, 75 Ohm

2.0 Mbit/s, 120 Ohm

Filter Duplex

It is possible to equip the RBS with either external antennas, integral antennas or an active antenna system (MAXITE

Using the active antenna, the RBS supports a “highway conﬁguration”, where two TRXs cover two directions as one cell, as speciﬁed below.

It is also possible to extend one cabinet with up to two other cabinets to form a 4 or 6 TRX site.

The RBS supports a multicasting box, as speciﬁed below. The RBS 2302 will support the following basic conﬁguration

alternatives:

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Table 9

GSM 900 GSM 1800 GSM 1900

M9d_1.2 M18d_1.2 M19d_1.2

M18d_2.2\H M19d_2.2\H M18d_2.2\A M19d_2.2\A

M9d_4.4 M18d_4.4 M19d_4.4

M18d_4.4\A M19d_4.4\A

M9d_6.6 M18d_6.6 M19d_6.6

M18d_6.6\A M19d_6.6\A

Integral Antennas

The following sections are available: Omni Antenna or Sector Antenna.

External Passive Antennas

The RBS supports the use of customer speciﬁc external antennas.

Multicasting box

It is possible to connect a multicasting box to the antenna connectors that combine the antenna signals from each TRX to one antenna feeder. The multicasting box is only supported for 2 TRX conﬁgurations.

Transmission

It is possible to change the door on the installation box to a wider door with a modem to support HDSL, ISDN or some other protocol.

Extended temperature range

It is possible to extend the temperature range by +10 Cusing a fan unit, placed on top of the RBS.

Extended OMT interfaces

The RBS supports a permanent extension of the OMT-port. The extension cable length may be up to 50 m. The PC end of the extension is designed for outdoor weather protected locations.

External battery backup

The RBS supports an external battery backup (the PBC) source using an adapter, mounted in the battery compartment of the RBS. The backup voltage requirements are further speciﬁed in chapter Product Speciﬁcation for Power and Battery Cabinet.

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5.4.3 Variants

Enhanced Lightning Protection

To protect the RBS 2302 from lightening it is possible to order an Enhanced Lightning Protection.

5.4.4 On Site Conﬁgurable Options and Variants

On site conﬁgurable options and variants are conﬁgurations that do not require different or additional hardware, see chapter RBS 2000 Micro, Site Conﬁgurations for more details.

5.5 Combinations

Possible combinations are described in Ordering Information.

5.6 Transmission Modes

Transmission

The RBS 2302 can be conﬁgured for linear cascade mode and stand alone mode. The conﬁguration is performed by means of the OMT.

When used in stand alone mode, PCM port A is connected to the BSC. In this mode, PCM port B cannot be used.

When used in linear cascade mode (multidrop), the RBSs are connected so that the ﬁrst RBS uses its port A towards the BSC and port B towards the second RBS. The consecutive RBSs are connected in the same way with port A towards the previous RBS (and indirectly the BSC) and port B towards the next RBS etc.

The transmission functionality is further speciﬁed in relevant function speciﬁcations, see chapter Transmission and Interface Handling G.703 2048 kbit/s and Transmission and Interface Handling DS1 1544 kbit/s.

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BSC

01_0345A

Figure 28 Multidrop chain

5.7 Interface and Connection

5.7.1 External Connections

AC Mains

Type of connections: Screw terminal for 4 X max.2.5 mm² Cable gland capacity:

1 times Ø8-19mm

External Battery Backup

Type of connections: The adapter must ﬁt the battery

compartment of the RBS.

External Alarms

Type of connections: Screw terminal for 16 x max. 1.5 mm² Cable gland capacity:

2 x Ø5-9 mm

Number of alarms: 8

Antenna Connectors

Type of connectors: 2 x TNC (receptacle) female.

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Note: When using integral antennas, cables and connectors are

included. These connection are placed on the cabinet.

Transmission

Twisted pair: Type of connections: Screw terminal for 12 x max. 1.5 mm

Cable gland capacity:

2 x Ø7-15 mm

Coaxial: Type of connection: 4 x TNC (receptacle) female Grounding: The transmit wire screen is grounded. It is

possible to ground the receive wire screen.

Earthing

Type of connectors: Central earth terminal point M8 thread

5.7.2 Internal Connections

OMT

Type of connections: 9 pin D-sub (receptacle) female.

Extended OMT-port

Type of connections: 9 pin D-sub female.

Maximum cable length: 50 m Cable gland capacity:

1 x Ø5-9 mm

5.7.3 Test Interface

The RBS is equipped with test ports for connection of external instruments. The following signals are available at test ports:

13 MHz Reference

Type of connectors: SMB connector (receptacle) male.

RTS-PLS Test Port

Type of connectors: No requirements

5.7.4 Operator Interface

The operator interface is located in the Mounting Base. The interface includes indicators and buttons, switches and barcode signs. For exact speciﬁcation of button and indicator functionality see chapter Operation & Maintenance Support.

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Indicators (LEDs)

Fault One or more faults, equals BS fault. Operational At least one TRX operational. Local mode RBS in local mode. Reduced capacity One of two TRXs operational. Test TRX1 Result from TRX1 test operation. Test TRX2 Result from TRX2 test operation. AC Power on AC Power is switched on to RBS. Battery fault Lowbattery DC voltage, battery absent. External alarm One or more external alarm active.

Buttons

CPU reset Local/remote mode Test Operation

initiation

Switches

Battery connected/not connected AC Mains connected/not connected

Barcode Sign

The barcode sign for product identiﬁcation is readable without disturbing the RBS function.

5.8 Product Requirements

5.8.1 Appearance

Ericsson products are designed to appear as one physical unit, inconspicuous, pleasant and good-looking. The standard colour of the RBS is Grey.

The front cover of the RBS which is designed as a sun-shield is available in different colours to make the RBS even more inconspicuous.

There is an optional integrated antenna system which supports the idea of the RBS and the antenna site as one unit.

5.8.2 Mechanical Structure

Replaceable Units

The RBS consists of the following replaceable units:

• Cabinet

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• Mounting base

• Installation box door

• Integral antennas

• Sun-shield

• Batteries

• AC-ﬁlter board (including overvoltage protection)

• Transmission ﬁlter board (including overvoltage protection)

• Wall bracket

• Mast/pole ﬁxture

• Connection board

Labels

Locks

The installation box door is equipped with a lock which can be exchanged if neccesary.

5.8.3 Dimension and Weight

Volume

The total volume of a complete RBS site without cabling, is less than 35 l.

Size

(HxWxD): 535x408x160 mm. (without integral antennas). (HxWxD): 535x408x210 mm. (with Sector Antenna). (HxWxD): 607x408x160 mm. (with Omnidirectional Antenna).

Weight

The total weight is the sum of the following units:

Cabinet 18 kg (incl. Internal battery) Mounting Base 8 kg (incl. Sun-shield) Wall bracket 5 kg (incl. Pole ﬁxture) Total weight 31 kg

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5.8.4 Hardware Characteristics

Acoustical Noise

The RBS will not contribute to the acoustic noise in the surroundings. The optional fan-unit contributes with less than 5.5 Bel at temperatures

below +30 C



and less than 6.5 at all other temperature.

Vandal Resistance

The RBS is designed as vandal resistant and unauthorized intrusion will not be possible without damaging the unit.

Package Material

The package material is recyclable.

Handling Robustness

The RBS main cabinet is designed to be placed on the ground during installation and maintenance work.

5.8.5 Environment

Operation

The RBS meets the following requirement for “outdoor mast mounted equipment”.

Temperature range:

-33



to +45C

-33



to +55C (with fan-unit)

Solar Radiation

The RBS is designed to withstand the additional heat from solar radiation in its speciﬁed environment.

Transport

The RBS meets the following transport requirements.

Temperature range:

-40



C to +70C

Storage

The RBS is designed to endure the requirement for storage.

Temperature range:

-25



C to +55C

Handling

The RBS is designed to endure the requirement for Handling.

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Temperature range:

-40



C to +70C

In addition to this requirement the RBS 2302 can be toppled without damage. Minor damage to the cabinet that is a broken corner of a cooling ﬁn after a topple will not disturb the function of the RBS.

5.8.6 Climate Protection

Climate Protection Principle

The climate protection maintains the internal temperature within the allowed range for the units in the RBS.

The climate protection of the RBS is handled by a combination of:

• Natural convection with the help of cooling ﬁns

• Conductional heating

The fan-unit increases the air ﬂow over the cooling ﬁns.

Heating Capacity

The system has the capacity to heat the RBS from:

• −33



C to starting conditions within 30 minutes

• −15



C to starting conditions within 15 minutes

The above only applies if the environmental conditions are: no wind or accumulated ice or snow on the RBS.

Ingression

The RBS fulﬁls the IP-55 requirements according to the standard IEC 529 and type 3R according to UL50.

5.8.7 Power Supply

Supply Voltage

The RBS can be connected to mains supply voltage with Nominal:

200 - 250 VAC ±10 % 50 Hz ±10 % 100 - 127 VAC ±10 % 60 Hz ± 8 % 200/100 - 240/120 ±10 % 60 Hz ± 8 %

The RBS will support installation with: Single-phase (two-wire; earthed end of phase). Single-phase (three-wire; earthed mid point). Single-phase (three-wire; separate PE and N conductor). According to TN, TT and IT power system. The AC supply is fused.

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Power Consumption

Normal operation, both TRXs transmitting on full output power (at 230 V nominal mains supply):

<140 VA

Maximum power consumption: <500 VA (only with

activated heater).

The optional fan-unit (at 230 V nominal mains supply):

<15 VA

Battery Backup

The RBS will survive interruptions on mains supply for at least 3 minutes. The RBS will maintain full performance during the backup time if the battery is fully charged. The battery will be recharged to at least 80% of its capacity within 15 hours.

For longer backup time an external UPS or PBC may be used.

Battery Backup (PBC)

The Battery Backup Time is further speciﬁed in chapter Site Conﬁguration, RBS 2000 Micro.

5.8.8 Type Approval

Type Approval Standard

The RBS 2302 fulﬁls the required type approvals from: GSM 11.20 or GSM 11.21 standard JTC standard FCC rules and regulations. According to requirements in Section Product Safety Requirements RBS

2000.

Product Safety

The RBS 2302, 1900 MHz is listed by the National Recognized Testing Laboratory (NRTL).

EMC

The RBS complies with the European Community market requirements regarding EMC for Base station equipment. The product has the CE sign to show this compliance.

The RBS complies with the US market requirement regarding EMC for Base station equipment. The product has the FCC sign to show this compliance.

The RBS fulﬁls the electromagnetic requirements for Base station Radio meeting Phase 2 GSM requirements according to ETS 300 342–3.

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5.8.9 Dependability

Technical Lifetime

The RBS is designed for a technical lifetime of 20 years (24 hours operation).

Preventive Maintenance

The RBS has the following availability performance.

Action Interval

Mean repair time (MRT) < 60 minutes Mean time between failures (MTBF) <8.5 years Mean accumulated down time (MADT) <6 minutes/year (time to reach

the site is not included)

These preventive maintenance conditions must be fulﬁlled to guarantee the availability ﬁgures above.

Action Interval

Change of battery < 5 years Change of lightning protection equipment <10 years Calibration of "optional" synchronisation oscillator < 3 years

5.8.10 Installation

Preconditions

•

It is possible to adjust the RBS in vertical direction ± 10.

• Wall mounting with no visible cables is supported.

• The initiation of the BSC is prepared.

• The transport network is available

at the site

• Mains power is available at site

• Preinstalled antennas and feeders are available

• Wall ﬁxture is preinstalled

• Favourable geographic location and environment (means higher

than -10



C, no precipitation and easy access to the site)

"available" means: accessible and with speciﬁed function.

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Installation Scenario

To support the concept of a quick and smooth installation scenario, the RBS installation work can be divided in to two steps:

• Preinstallation. Installation of the Mounting Base, antennas and

all necessary cabling ( AC mains, transmission and alarms).

• Installation and Commissioning. Installation of the Cabinet

including all parts according to customer ordering. However, the installation can be performed in one site visit. The manual operations at installation are few and easy, this is valid also

when connecting external cables.

Site Installation Requirement

Free space is required around the RBS for installation and maintenance. For a simple installation, the following distances are recommended:

• Front: 1.0 m

• Side: 0.25 m

• Top: 0.5 m

• Bottom: 0.5 m

For 4 and 6 TRX, the maximum distance between the cabinets is 5 m, which is the length of the cable.

If external battery backup is used, the following distances are required:

• Top: 0.7 m

• Bottom: 0.7 m

5.8.11 Production

The concept for the RBS supports production according to customer choice from the ordering information plan.

5.9 Future Expansion

5.9.1 Future Expansion Possibilities

• The hardware of the RBS is prepared for the expansion of up to 4

and 6 TRX.

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6 Product Speciﬁcation for

Power and Battery Cabinet

This chapter describes the architecture of the Power and Battery Cabinet (PBC), and speciﬁes its characteristics and performance.

6.1 Terminology

TN Power System TN Power System is a power distribution

system having one point directly earthed . The exposed conductive parts of the installation are connected to that point by protective earth connectors.

TT Power System TT Power System is a power distribution

system having one point directly earthed . The exposed conductive parts of the installation are connected to earth electrodes electrically independent of the earth electrodes of the power system.

IT Power System IT Power System is a power distribution

system having no direct connection to earth. The exposed conductive parts of the electrical installation are earthed.

Link Equipment Link Equipment is used to establish

contact with the BSC if there is no ﬁxed network between the RBS and the BSC.

Second PBC A second PBC is used in conﬁgurations

which require two AAUs connected to one RBS.

Replaceable Unit In this document Replaceable Unit refers

to units that are replaceable on site.

6.2 General

The PBC serves as a common base for battery back-up and power supply to the Active Antenna, the micro RBS and optional transmission equipment (link equipment). The PBC is also an interface for alarms from the Active Antenna and the RBS.

After a complete discharge of the battery the recharging time is less than 24 hours.

In order to reuse already developed parts the mechanical outline is similar to Ericssons micro basestation family. The units are based on modular, standardized assembly structure.

Easy access of the batteries for maintenance without disturbing the trafﬁc.

The weather-proof cabinet and design make it ideal for installation indoor, outdoor, on poles, walls or masts.

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The base colour of the PBC is Grey, but it is possible to order the front sun-shields in different colours, which can make the PBC more discrete depending on the environmental surroundings.

The PBC is built up by the following main physical units: Battery Cabinet, Sun-shields, Lid and Mounting Base where Installation Box and Interface Box are included. This will support a routine of installing the Mounting Base prior to the Cabinet arrival.

The PBC has the same width and length as the micro RBS but the rear sun-shield is modiﬁed to achieve the additional volume needed to ﬁt the batteries.

6.3 Product Architecture

6.3.1 Main Physical Units

P003439A

Front sunshield

Upper sunshield

Left sunshield

Lower sunshield

Mounting base

Battery

Cabinet

Interface box

Installation box

Figure 29 Main Physical Units

BC Battery Cabinet

The BC contains a AC/DC converter and batteries for DC-backup. The batteries are replaceable without disturbing trafﬁc handling.

Installation Box The Installation Box contains the

MMI-area.

Interface Box The Interface Box contains all ports to

external equipment as follows:

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AC Mains to PBC –48 V to link equipment –48 V and Data to AAU in the same port two ports 24 V to RBS alarm port from second PBC binary alarms to the RBS The Interface Box also contains surge

protection devices on all external terminals. The internal interface is designed so that it is possible to remove the surge protection devices and install an optional reinforced surge device.

Mounting Base The Mounting Base serves as a base for

the Battery Cabinet.

Sun-shield The Sun-shields protect the PBC from

sun, wind, rain and snow.

6.4 Conﬁgurations

6.4.1 Options

Options are conﬁgurations that require additional hardware.

Appearance

The following optional colours are available for the sun-shields besides the standard colour.

NCS S2010-B70G (Olive green) NCS S1020-R70B (Sky blue) NCS S1020-Y90R (Brick red) NCS S1020-Y50R (Brown) NCS S1020-Y10R (Yellow)

According to NCS standard.

6.4.2 Variants

Enhanced Lightning Protection

To protect the PBC from lightening it is possible to order an Enhanced Lightning Protection.

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6.4.3 On Site Conﬁgurable Options and Variants

On site conﬁgurable options and variants are conﬁgurations that do not require different or additional hardware, see chapter RBS 2000 Micro, Site Conﬁgurations for more details.

6.5 Combinations

Possible combinations are described in Ordering Information.

6.6 Interface and Connection

6.6.1 External Connections

AC Mains

Type of connections: Screw terminal for 3 x max.2.5 mm² Cable gland capacity:

1 times Ø 10.5-14 mm

Data/DC port

Type of connections: Data and -48 V Cable gland capacity:

1 times ∅ 14-16 mm

Data

Type of connections: Screw terminal for 2 x max. 0.6 mm² Cable gland capacity: See Data/DC port

Earthing

Type of connectors: Central earth terminal point M8 thread

Binary Alarms

The PBC has eight alarm terminals. Four of them are used to connect the RBS. The remaining four terminals are used to connect the external alarms from the second PBC.

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Product Speciﬁcation for Power and Battery Cabinet

PBC Alarms to RBS

Type of connections: Screw terminal for 4 x 2x max.1.5 mm² Cable gland capacity:

1 times Ø 7.5-9.5 mm

Number of alarms: 4

PBC Alarms from second PBC

Type of connections: Screw terminal for 4 x 2x max.1.5 mm² Cable gland capacity:

1 times Ø 7.5-9.5 mm

Number of alarms: 4

+24 Volt DC

The PBC supplies two regulated DC voltages with +24 V. The two voltages are fused separately.

Each voltage supplies the RBS with DC power. The voltages are galvanically isolated from -48 V and from Cassie/ground.

+24 V, RBS 1

Type of connections: Screw terminal for 2x max.1.5 mm² Cable gland capacity:

1 times Ø 7.5-9.5 mm

+24 V, RBS 2

Type of connections: Screw terminal for 2x max.1.5 mm² Cable gland capacity:

1 times Ø 7.5-9.5 mm

–48 Volt DC

The PBC supplies two regulated DC voltages with -48 V. The two voltages are fused separately. One voltage supplies the AAU and the other voltage supplies the Link equipment.

The two voltages are positive grounded, that is the terminal with the highest potential is connected to Cassie/ground. The voltages are not galvanically isolated from each other.

-48 V, AAU

Type of connections: Screw terminal for 2x max. 6 mm² Cable gland capacity: See Data/DC port

-48 V, Link Equipment

Type of connections: Screw terminal for 2x max. 2.5 mm² Cable gland capacity:

1 times ∅ 7.5-9.5 mm

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6.6.2 Operator Interface

When opening the Lid to the Installation Box there is an MMI area available containing the operational interface which includes two LEDs, three 7–segment indicators and a number of buttons, see ﬁg below.

OPERATIONAL FAULT

P003220A

Down

Enter

Batt

Power

D1 D2 D3

Figure 30 MMI Interface

Indicators (LEDs)

Colours

-Green Operational

-Green and red Warning

-Red Fault

Display

Display 1 Unit number Display 2 Alarm severity Display 3 Error code

Buttons

Up Step numbers up on the display Down Step numbers down on the display Menu Select between display elements Enter Transfers commands to AAU

Barcode Sign

The barcode sign for product identiﬁcation is readable without disturbing the PBC function.

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Product Speciﬁcation for Power and Battery Cabinet

6.7 Product Requirements

6.7.1 Functional Requirements

MMI Handling

The PBC MMI functions provides the following:

• Supervision of the Antenna alarm signals

• Communication link between the AAU and the PBC

• Supervision of the PBC alarm signals

• Alarm signalling to the RBS

• User interface for installation settings and alarm presentation

Codes on display

Display 1 (D1) shows the unit number as follows:

0 = PBC 1 = Antenna part 1 2 = Antenna part 2 3 = Antenna part 3 4= 5 = Feeder A 6 = Feeder B 7 = Installation faults Antenna part 2 and 3 are used if the antenna consists of more than

one unit.

Display 2 (D2) shows the severity of an alarm as follows:

0 = Not Classiﬁed 1 = Severe 2= Warning The messages for the feeder values also use this element, see below.

Display 3 (D3) shows which type of error has occured or the command that is transmitted to the AAU as follows:

0 = AC fault 1 = AC/DC fault 2 = DC/DC overload 3 = DC/DC fault 4 = Battery fault

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5 = Battery disconnected 6 = Low battery voltage 7 = Overtemp, active 8 = Overtemp, historical 9 = Mode fault in PBC

AAU:

0 = Transmission fail 1 = DC fault 2 = TXA fault 3 = TXB fault 4 = RXA fault 5 = RXB fault 6 = Overtemp, active 7 = Overtemp, historical P = Output power off H = FDU attenuators set to max

Feeder:

0-12= Cable attenuation value

The attenuation value is allowed to be between 0 and 12, presented in one dB-steps (integers only).

Installation:

1 = Feeder A, installation fault 2 = Feeder B, installation fault

Note: The alarms Installation fault, Output power off, and FDU

attenuators set to max are only used during installation.

Operator Control Buttons

The buttons are used together with the display to initiate the feeder cable attenuation setting and to step through the error codes.

If an alarm error code is received it is immediately shown on the display. If there are several errors, the operator is able to step through the error codes with the UP/DOWN buttons.

All errors displayed are current alarms, that is no history is displayed on the MMI. The temperature alarms are however handled in another way because they are differentiated as active or historical.

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Product Speciﬁcation for Power and Battery Cabinet

6.7.2 Alarm Description

Internal Alarm in the PBC

AC fault

Raise condition: Activated if AC mains is below 85 V Cease condition: Activated if AC mains is more than

88 V Alarm severity: Warning Action: None

AC/DC fault

Raise condition: Activated if output voltage from

PSU is less than 45 V Cease condition: The normal voltage has returned Alarm severity: Warning Action: None

DC/DC overload

Raise condition: Activated if one of the two 24 V

outputs are overloaded, for example,

the current is outside speciﬁed value. Cease condition: The load must be disconnected and

the current must be within speciﬁed

values. Alarm severity: Warning Action: None

DC/DC fault

Raise condition: Activated with low output voltage or

high temprature in DC/DC &

Supervisor. Cease condition: The normal voltage and the

temperature has returned. Alarm severity: Warning Action: None

Battery fault

Raise condition: Activated if the battery is faulty or if

charging is not operating normally. Cease condition: Correct battery or normal charging

has returned.

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Alarm severity: Warning Action: None

Battery disconnected

Raise condition: Activated if the battery is not

connected to the battery switches. Cease condition: The battery is connected. Alarm severity: Warning Action: Connect the battery switches.

Low battery voltage

Raise condition: Activated if the battery voltage is

less than 43.5 V. Cease condition: When the battery voltage is more

than 43.5 V. Alarm severity: Warning Action: None

Overtemperature, active

Raise condition: OvertempErature in the PSU, the

battery unit or the DC/DC

supervisor. Cease condition: When the internal tempErature has

returned. Alarm severity: Warning Action: None

Overtemperature, historical

Raise condition: Overtemperature in the PSU, the

battery unit or the DC/DC

supervisor. Cease condition: Manual reset Alarm severity: Warning Action: None

The PBC internal alarms are mapped to the following binary alarms:

SEVERE_A AAU, carrier A, severe SEVERE_B AAU, carrier B, severe WARNING AAU, carrier A or B, warning POWER PBC, any error, warning

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Product Speciﬁcation for Power and Battery Cabinet

6.7.3 Appearance

Ericsson products are designed to appear as one physical unit, inconspicuous, pleasant and good-looking. The standard colour of the RBS is Grey.

The front cover of the PBC which is designed as a sun-shield may be ordered in different colours to make the PBC even more discrete.

6.7.4 Mechanical Structure

Replaceable Units

The PBC consists of the following replaceable units:

• Battery Cabinet

• Mounting base

• Installation box cover

• Interface box

• Sun-shields

• Batteries

• Mounting plate

• Mast/pole ﬁxture

• Lightning protection unit

• Protection Cover

Labels

All signs are placed to fulﬁl the requirements behind the purpose and reason for the signs. All signs that are needed for identiﬁcation of the product and its compliance are readable without disturbing the PBC function.

6.7.5 Dimension and Weight

Volume

The total volume of a complete PBC site without cabling, is less than 56 l.

Size

(HxWxD): 535 x 408 x 330 mm.

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Weight

Battery Cabinet 23 kg Batteries 21 kg Mounting Base 9.5 kg Mounting Plate 3.0 kg Sunshields 1.5 kg

Total weight 58 kg

6.7.6 Hardware Characteristics

Acoustic Noise

The PBC will not contribute to the acoustic noise in the surroundings.

Vandal Resistance

The PBC is designed to be vandal resistant and unauthorized intrusion will not be possible without damaging the unit.

Package Material

The package material is recyclable.

Handling Robustness

The PBC main cabinet is designed to accept intermediate placing on the ground during installation and maintenance work.

6.7.7 Environment

Operation

The PBC is designed to endure the requirement for Outdoor Mast Mounted Equipment.

Temperature range:

-33



- +45C

Operating at battery backup:

-10



- +45C

Solar Radiation

The PBC is designed to withstand the additional heat from solar radiation in its speciﬁed environment.

Transport

The PBC meets the following transport requirement.

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Product Speciﬁcation for Power and Battery Cabinet

Temperature range:

-40



C - +70C

Storage

The PBC meets the following storage requirement.

Temperature range:

-25



C - +55C

Handling

Temperature range:

-40



C - +70C

The PBC is designed to be placed on the ground. In addition to this requirement the PBC will endure a topple. Minor

damages to the cabinet, for example a broken corner of a cooling ﬁn after a topple, will not disturb the function of the PBC.

6.7.8 Climate Protection

Climate Protection Principle

The climate protection maintains the internal temperature within allowed range for the units in the PBC.

The climate protection of the PBC is handled by a combination of:

• Natural convection using cooling ﬁns

• Conductional heating

Battery Heating Capacity

The system delivers DC to the external users independent of temperature.

The system has the capacity to heat the batteries from −33



C to start

charging within 30 minutes (15 minutes from −15



C) if the

environmental conditions are no wind. The above applies if the environmental conditions are: no wind or

accumulated ice or snow on the PBC. During back-up mode the heater is not operational.

Ingression

The PBC fulﬁls the IP-55 requirements according to the standard IEC 529 and type 3R according to UL50.

6.7.9 Power Supply

Input Supply Voltage

The PBC can be connected to mains supply voltage with Nominal:

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Product Speciﬁcation for Power and Battery Cabinet

200 - 250 VAC ±10 % 50 Hz ±10 % 100 - 127 VAC ±10 % 60 Hz ± 8 % 200/100 - 240/120 ±10 % 60 Hz ± 8 %

The PBC will support installation with: Single-phase (two-wire; earthed end of phase). Single-phase (three-wire; earthed mid point). Single-phase (three-wire; separate PE and N conductor). according to TN, TT and IT power system

Output Supply Voltage

The PBC delivers the following output voltages:

RBS

Nominal + 24 V range 21.5-28 V Nominal load current 5.2 A

AAU

Nominal -54.1 V range -42.8- -60V Nominal load current 4.0 A

Link

Nominal -54.1 V range -42.8- -60V Nominal load current 0.6 A

Power Consumption

Regarding Power Consumption ﬁgures see chapter General Speciﬁcation for RBS 2000 Micro Site Conﬁguration.

Battery Backup

The PBC battery backup time is between 1.5–3 hours depending on which conﬁguration is used. The battery will be recharged within 24 hours.

For longer backup time an external UPS may be used.

6.7.10 Type Approval

Type Approval Standard

The PBC fulﬁls the required type approvals from: GSM 11.20 or GSM

11.21 standard JTC standard FCC rules and regulations. According to requirements in Section Product Safety Requirements RBS 2000.

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Product Speciﬁcation for Power and Battery Cabinet

Product Safety

The PBC is listed by the National Recognized Testing Laboratory (NRTL).

EMC

The PBC complies with the European Community market requirements regarding EMC for Base station equipment. The product has the CE sign to show this compliance.

The PBC complies with the US market requirement regarding EMC for Base station equipment. The product has the FCC sign to show this compliance.

The PBC fulﬁls the electromagnetic requirements for Base station Radio meeting Phase 2 GSM requirements according to ETS 300 342–3.

6.7.11 Dependability

Technical Lifetime

The PBC is designed for a technical lifetime of 20 years (24 hours operation).

Preventive Maintenance

The PBC has the following availability performance.

Action Interval

Mean repair time (MRT) < 30 minutes Mean time between failures (MTBF) <28 years

Mean accumulated down time (MADT) <1 minutes/year (time to reach

the site is not included)

These preventive maintenance conditions must be fulﬁlled to guarantee the availability ﬁgures above.

Action Interval

Change of battery < 10 years (with an

annual temperature of +20



Surge protection equipment <10 years

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Product Speciﬁcation for Power and Battery Cabinet

Fault Localization

In the PBC all active subunits are identiﬁed and the address of faulty subunit is stored in a ﬂash memory. This makes it possible for the repair center to perform a fast and accurate repair on the PBC without any calibration.

6.7.12 Installation

A quick and easy installation procedure is provided. If the installation preconditions are met, the PBC can be installed in less than 30 minutes. A minimum of tools and instruments are required when installing a PBC.

Installation Scenario

To support the concept of a quick and smooth installation scenario, the PBC installation work can be divided in to two steps:

• Preinstallation. Installation of the Mounting Base, antennas and

all necessary cabling ( AC mains and alarms).

• Installation and Commissioning. Installation of the Cabinet

including all parts according to customer ordering. However, it is possible to perform the installation in one site visit. The manual operations at installation are few and easy. This is valid

also when connecting external cables.

Site Installation Requirement

500 mm

P003438A

Figure 31 Wall Mounting side by side

Free space is required around the PBC for installation and maintenance. For a simple installation, the following distances are recommended:

• Front: 1.0 m

• Side: 0.5 m

• Top: 0.5 m

• Bottom: 0.5 m

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Product Speciﬁcation for Power and Battery Cabinet

6.7.13 Production

The concept for the PBC supports production according to customer choice from the ordering information plan.

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Broadcast

7 Broadcast

“Broadcast” denotes the RBS resources used for transmission of Synchronisation Information and System Information.

The RBS supports:

• Broadcast of Synchronisation Information on SCH and FCCH

• Broadcast of System Information 1, 2, 2bis, 2ter, 3 and 4 on

BCCH

• Broadcast of System Information 5, 5bis, 5ter and 6 on SACCH

• Broadcast of System Information 7 and 8 on BCCH Extended

Short message service cell broadcast is covered within the context of Short Message Service.

7.1 References

/GSM:04.06/ GSM 04.06 (phase2) version 4.4.0 /GSM:04.08/ GSM 04.08 (phase2) version 4.10.1 and

Amendment Request A015r5 /GSM:05.02/ GSM 05.02 (phase2) version 4.4.2 /GSM:05.03/ GSM 05.03 (phase2) version 4.2.0 /GSM:05.10/ GSM 05.10 (phase2) version 4.5.0 /GSM:08.58/ GSM 08.58 (phase2) version 4.7.0 and

Amendment Request A006r1 Whenever a reference is made to a function described in another chapter,

please refer to the table of contents to ﬁnd the appropriate chapter.

7.2 Concepts

BCCH Extended Paging, Immediate Assign and System

Information 7 and 8 may share the same

TDMA frame mapping, see /

GSM:05.02:6.5.1/ and /GSM:05.02:7:

table 3 of 5/

7.3 Functions

7.3.1 Broadcast of Synchronisation Information

Synchronisation bursts are transmitted on SCH and Frequency Correction bursts are transmitted on FCCH.

The bursts are transmitted regularly, allowing attaching mobiles to synchronise on the TDMA structure and on the timing of the cell.

Supported logical channels /GSM:05.02:3.3.2/: FCCH Frequency Correction Channel

SCH Synchronisation Channel

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Supported channel combinations /GSM:05.02:6.4/:

• (iv) FCCH+SCH+BCCH+CCCH

• (v) FCCH+SCH+BCCH+CCCH+SDCCH/4(0..3)+SACCH/

C4(0..3) Transmission on FCCH is in accordance with /GSM:05.02:5.2.4./. Transmission on SCH means transmission of BSIC (Base Station

Identity Code) and RFN (Reduced Frame Number) in accordance with / GSM:05.02:5.2.5./, /GSM:05.03:4.7./ and /GSM:04.08:9.1.30./.

The BSIC value is received from the BSC, as a conﬁguration parameter.

7.3.2 Reception of BCCH_INFORMATION from BSC

By means of the BROADCAST INFORMATION MODIFY procedure / GSM:08.58:5.5./, the BSC deﬁnes new System Information messages 1, 2, 2bis, 2ter, 3, 4, 7 and 8 to be stored and regularly broadcast by the RBS on the BCCH and BCCH Extended channel.

The RBS supports:

• Interpretation and check of the BCCH_INFORMATION message

from BSC

• Storage and update of System Information 1-4 and 7-8

System Information is included in the BCCH_INFORMATION message received from the BSC. New System Information received is used in BCCH transmissions when scheduled.

Transmission of a speciﬁc System Information message can be stopped by a BCCH_INFORMATION message /GSM:08.58:8.5.1/ on order from the BSC.

7.3.3 Broadcast of System Information on BCCH

The RBS supports scheduled transmission of System Information on the BCCH channel /GSM:04.08:3.2.2.1/. Reception of System Information from the BSC is described in the section above.

Supported logical channels /GSM:05.02:3.3.2/: BCCH Broadcast Control Channel Supported channel combinations /GSM:05.02:6.4/:

• (iv) FCCH+SCH+BCCH+CCCH

• (v) FCCH+SCH+BCCH+CCCH+SDCCH/4(0..3)+SACCH/

C4(0..3) The following table deﬁnes the System Information type used depending

on TC (Transaction Capabilities) /GSM:05.02:6.3.4/. If a type is not loaded from the BSC, the type within parenthesis is used (if it is loaded).

Table 10 Mapping of BCCH data

TC No 2bis, no 2ter 2bis, no 2ter No 2bis, 2ter 2bis, 2ter

0 1 (3) 1 (3) 1 (3) 1 (3) 1 2 2 2 2

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Broadcast

2 3 3 3 3 3 4 and 8 4 and 8 4 and 8 4 and 8 4 3 3 3 2ter 5 2 2bis 2ter 2bis 6 3 3 3 3 7 4 and 7 4 and 7 4 and 7 4 and 7

Types 7 and 8 are sent on the BCCH Extended channel when they are loaded.

For BCCH blocks, where no System Information (1-4) is deﬁned, "ﬁll frames" /GSM:04.06:5.4.2.3/ are transmitted.

7.3.4 Reception of SACCH_FILLING from BSC

By means of the SACCH FILLING INFORMATION MODIFY procedure /GSM:08.58:6.2/, the BSC sends System Information 5, 5bis and 6 to be used on all SACCHs handled by a TRX (tranceiver).

The RBS supports:

• Interpretation and check of the SACCH_FILLING message from

BSC

• Storage and update of System Information 5, 5bis and 6

System Information is included in the SACCH_FILLING used for all SACCHs in one TRX. New System Information received is used in SACCH transmissions when scheduled.

Transmission of a speciﬁc System Information message can be stopped by a SACCH_FILLING message /GSM:08.58:8.5.1/ on order from the BSC.

7.3.5 Broadcast of System Information on SACCH

The RBS supports scheduled transmission of System Information on the SACCH channel /GSM:04.08:3.2.2.1/.

Reception of System Information from the BSC for all channel groups within a TRX is described in the section above. Reception of System Information for one particular channel group is described in chapter “Call Control”, see table of contents.

Supported logical channels /GSM:05.02:3.3.4/: SACCH Slow Associated Control Channel Supported channel combinations /GSM:05.02:6.4/:

• (i) TCH/F + FACCH/F + SACCH/TF

• (ii) TCH/H(0,1) + FACCH/H(0,1) + SACCH/TH(0,1)

• (v) FCCH+SCH+BCCH+CCCH+SDCCH/4(0..3)+SACCH/

C4(0..3)

• (vii) SDCCH/8(0..7) + SACCH/C8(0..7)

LAPDm frames /GSM:04.06:2.1 (format type B)/ are used for transmission of System Information on SACCH.

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Broadcast

For SACCH blocks, where no System Information is deﬁned, "ﬁll frames" /GSM:04.06:5.4.2.3/ are transmitted.

TRS will change System Information message type for every transmission occasion according to Table 11 on page 94.

Even though the System Information types 5 and 6 are not optional, no checks are performed if they are stored (or deleted). If one of the System Information types 5 or 6 (or both) are missing the TRS shall change System Information message type for every transmission occasion according to Table 12 on page 94.

Table 11 SACCH System Information schedule

Stored System Information Transmission order

5 5bis 5ter 6 * * * * 5, 5bis, 5ter, 6... * * * 5, 5bis, 6... * * * 5, 5ter, 6... * * 5, 5, 6...

Table 12 SACCH System Information schedule

Stored System Information Transmission order

5 5bis 5ter 6

* * * 5, 5bis, 5ter...

* * * 5bis, 5ter, 6... * * 5, 5bis... * * 5, 5ter...

* * 5bis, 5ter...

* * 6, 5bis...

* * 6, 5ter...

* 5,5...

* 5bis, 5bis...

* 5ter, 5ter...

* 6, 6...

For SACCH blocks, where no System Information is deﬁned, "ﬁll frames" /GSM:04.06:5.4.2.3/ are transmitted.

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Physical Channel Handling

8 Physical Channel Handling

This chapter covers the trafﬁc services provided by the physical layer in the RBS for the air interface.

8.1 References

/GSM:05.02/ GSM 05.02 (phase 2) version 4.3.0 /GSM:05.03/ GSM 05.03 (phase 2) version 4.1.0

Whenever a reference is made to a function described in another chapter, please refer to the table of contents to ﬁnd the appropriate chapter.

8.2 Functions

8.2.1 Supported Burst Types

The following burst types are supported /GSM:05.02:5.2/:

• Normal burst

• Frequency correction burst

• Synchronisation burst

• Dummy burst

• Access burst

8.2.2 Supported Logical Channels

The following logical channels are supported /GSM:05.02:3/: BCCH Broadcast Control Channel

CBCH Cell Broadcast Channel CCCH Common Control Channel, comprising:

– AGCH Access Grant Channel – PCH Paging Channel

– RACH Random Access Channel FACCH/F Fast Associated Control Channel, full rate FACCH/H Fast Associated Control Channel, half rate FCCH Frequency Correction Channel SACCH/C4 Slow Associated Control Channel,

dedicated control/4 SACCH/C8 Slow Associated Control Channel,

dedicated control/8 SACCH/TF Slow Associated Control Channel, full rate

trafﬁc

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Physical Channel Handling

SACCH/TH Slow Associated Control Channel, half

rate trafﬁc SCH Synchronisation Channel SDCCH/4 Stand-Alone Dedicated Control Channel/4 SDCCH/8 Stand-Alone Dedicated Control Channel/8 TCH/F Trafﬁc Channel, full rate TCH/H Trafﬁc Channel, half rate

8.2.3 Supported Channel Combinations

The following channel combinations are supported /GSM:05.02:3/:

• (i) TCH/F + FACCH/F + SACCH/TF

• (ii) TCH/H(0,1) + FACCH/H(0,1) + SACCH/TH(0,1)

• (iv) FCCH + SCH + BCCH + CCCH

• (v)

− a) FCCH + SCH + BCCH + CCCH + SDCCH/4[0..3] +

SACCH/C4[0..3]

− b) FCCH + SCH + BCCH + CCCH + SDCCH/4[0,1,3] +

SACCH/C4[0,1,3] + CBCH

• (vii)

− a) SDCCH/8[0..7] + SACCH/C8[0..7]

− b) SDCCH/8[0,1,3..7] + SACCH/C8[0,1,3..7] + CBCH

Note: CCCH = PCH + RACH + AGCH. Note: Channel combinations (v) and (vii) type b, are valid only

when SMS Cell Broadcast is conﬁgured. In case of Channel combination (vii), CBCH is only allowed for TN (Timeslot Number)=0..3.

Note: Channel combinations (iv) and (v) must be conﬁgured for

TN=0.

8.2.4 Channel Coding

Channel Coding (downlink) is performed according to: /GSM:05.03:3/ Trafﬁc Channels

/GSM:05.03:4/ Control Channels

8.2.5 Channel Decoding

Channel Decoding (uplink) is performed according to: /GSM:05.03:3/ Trafﬁc Channels

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/GSM:05.03:4/ Control Channels

8.2.6 Interleaving

Interleaving (downlink) is performed according to: /GSM:05.03:3/ Trafﬁc Channels

/GSM:05.03:4/ Control Channels

8.2.7 De-interleaving

De-interleaving (uplink) is performed according to: /GSM:05.03:3/ Trafﬁc Channels

/GSM:05.03:4/ Control Channels

8.2.8 Burst Assembly

Burst Assembly is performed according to: /GSM:05.02:5.2.3/ Normal bursts

/GSM:05.02:5.2.4/ Frequency correction bursts /GSM:05.02:5.2.5/ Synchronisation bursts /GSM:05.02:5.2.6/ Dummy bursts /GSM:05.02:5.2.7/ Access bursts

8.2.9 Multiplexing

Multiplexing of bursts into TDMA frames is performed according to: /GSM:05.02:7 Table 1/

/GSM:05.02:7 Table 2/ /GSM:05.02:7 Table 3/ /GSM:05.02:7 Table 4/ /GSM:05.02:7 Table 5/

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Base Station Power Control

9 Base Station Power Control

This document covers power regulation by means of the CHANNEL_ACTIVATION and BS_POWER_CONTROL messages from the BSC.

The "Base Station Power Control" function is implemented to minimise the transmit power required by the RBS TRXs (transceivers), while maintaining the quality of the radio link.

9.1 References

/GSM:05.02/ GSM 05.02 (phase 2) version 4.3.0 /GSM:05.05/ GSM 05.05 (phase 2) version 4.6.0 /GSM:05.08/ GSM 05.08 (phase 2) version 4.6.0 /GSM:08.58/ GSM 08.58 (phase 2) version 4.2.0

Whenever a reference is made to a function described in another chapter, please refer to the table of contents to ﬁnd the appropriate chapter.

9.2 Concepts

Nominal Power The power level deﬁned during

conﬁguration of the RBS TRXs.

9.3 Functions

9.3.1 Base Station Power Control at Channel Activation

By means of the TRANSMISSION POWER CONTROL procedure / GSM:08.58:4.9/, the BSC deﬁnes the TRX (transceiver) transmission power level.

The RBS supports:

• Interpretation of the BS Power information element in the

CHANNEL ACTIVATION message from BSC

• Storage of BS Power

• Adjustment of BS Power level

Supported Channel Numbers /GSM:08.58:9.3.1/:

• Bm + ACCHs

• Lm + ACCHs

• SDCCH/8 + ACCH

• SDCCH/4 + ACCH

Supported Channel combinations /GSM:05.02:6.4/:

• (i) TCH/F + FACCH/F + SACCH/TF

• (ii) TCH/H(0,1) + FACCH/H(0,1) + SACCH/TH(0,1)

EN/LZT 123 2697 R5A 1998-08-13

99 (306)

Ericsson CME 20 R6.1, CMS 40 R3, CME 20 R6.0, RBS 2302, RBS 2301 Reference Manual

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