Reference Manual

ManualsBrandsEricsson Radio Systems ManualsElectronicsPCS Broadband GSM Base station

Table Of Contents

EN/LZT 720 0008 R1A

P007551A

Ericsson GSM System, BSS R8

RBS 2206

Reference Manual

Summary of content (499 pages)

PAGE 1
P007551A Ericsson GSM System, BSS R8 RBS 2206 Reference Manual EN/LZT 720 0008 R1A
PAGE 2
PAGE 3
E RBS 2206 Reference Manual RBS 2206 Reference Manual © Ericsson Radio Systems AB — All Rights Reserved — EN/LZT 720 0008 2001-06-26 R1A © Ericsson Radio Systems AB — All Rights Reserved — 1 (421)
PAGE 4
RBS 2206 Reference Manual Due to continued progress in methodology, design and manufacturing, the contents of this document are subject to revision without notice.
PAGE 5
RBS 2206 Reference Manual Contents 1 Preface ........................................................................................................... 13 1.1 Objectives................................................................................................ 13 1.2 Target Groups..........................................................................................13 1.3 RBS 2000 Library Overview....................................................................13 1.4 How to Order CPI...........
PAGE 6
RBS 2206 Reference Manual 5 Product Data..................................................................................................79 5.1 Site Equipment Overview........................................................................ 79 5.2 Site Power Options..................................................................................80 5.3 Power Connections..................................................................................80 5.4 RBS 2206 Cabinet Hardware Description.............
PAGE 7
RBS 2206 Reference Manual 10.2 External Interfaces.................................................................................137 10.3 Indicator................................................................................................. 138 10.4 Electrical Data........................................................................................138 11 Unit Description, DC-Filter 01....................................................................141 11.1 Functions ............................
PAGE 8
RBS 2206 Reference Manual 17.2 Functions ............................................................................................... 175 18 Speech and Data Services.........................................................................179 18.1 References.............................................................................................179 18.2 Concepts................................................................................................179 18.3 Functions ..........................
PAGE 9
RBS 2206 Reference Manual 22.1 References.............................................................................................217 22.2 Concepts................................................................................................217 22.3 Functions ............................................................................................... 217 22.4 Operational Conditions.......................................................................... 218 23 Channel Measurements................
PAGE 10
RBS 2206 Reference Manual 29.2 Functions ............................................................................................... 239 29.3 Operational Conditions.......................................................................... 241 30 Diversity Supervision ................................................................................. 243 30.1 References.............................................................................................243 30.2 Concepts............................
PAGE 11
RBS 2206 Reference Manual 34.4 Operational Conditions.......................................................................... 267 35 Restart and Recovery.................................................................................269 35.1 References.............................................................................................269 35.2 Concepts................................................................................................269 35.3 Function.................................
PAGE 12
RBS 2206 Reference Manual 38.16 Tx Not Enabled Indicator.....................................................................294 38.17 Local Mode Indicator ........................................................................... 295 38.18 External Alarms Indicator .................................................................... 296 38.19 DC Disconnected Indicator..................................................................296 38.20 Battery Mode Indicator ........................................
PAGE 13
RBS 2206 Reference Manual 42.1 References.............................................................................................321 42.2 Concepts................................................................................................321 42.3 Functions ............................................................................................... 322 42.4 Operational Conditions.......................................................................... 330 43 External Alarms.....................
PAGE 14
RBS 2206 Reference Manual 49.1 References.............................................................................................373 49.2 Concepts................................................................................................373 49.3 Function................................................................................................. 373 49.4 Operational Conditions.......................................................................... 373 50 Channel Distribution Function ......
PAGE 15
Preface 1 Preface This Reference Manual is valid for the Ericsson GSM system BSS R8. For the RBS 2000 library structure, see Figure 1 on page 14. 1.1 Objectives This manual is a detailed overview of the Ericsson RBS 2000 Macro system based on 12–TRX cabinets for GSM 900, GSM 1800 and GSM 1900. The manual describes RBS 2206, and comprises the following: • Preface (chapter 1) • RBS 2000 General information (chapters 2 – 3): System Specifications and Requirements.
PAGE 16
Preface RBS 2000 RBS 2206 Library Reference Manual Installation and Integration Manual RBS Synchronization Manual Cabinet Assembly and Extension Manual Maintenance Manual Spare Parts Catalogue P007803C Figure 1 1.4 The CPI for the RBS 2206 Macro 12–TRX cabinet How to Order CPI CPI can be ordered in the same way as all other Ericsson products using the product number to identify each product. Orders can be placed through any local Ericsson company, or alternatively, on the Internet.
PAGE 17
Preface Once your access is setup, a reply with all the details you need will be sent to you. Alternatively, you can download the Portal Order form from the Extranet. • The first time you log in to the site, we recommend you to read the user instructions. More information about Extranet can be found at the Extranet address below. For support on issues related to the Extranet, Tel.: +46 8 585 33085. 1.4.
PAGE 19
Product Safety Requirements RBS 2000 2 Product Safety Requirements RBS 2000 The purpose of this document is to specify the product safety requirements for RBS 2000. 2.1 References 73/23/EEC Low Voltage Directive CAN/CSA-C22.2 No 1-M94 Audio, Video and Similar Electronic Equipment CAN/CSA-C22.2 No 950-95 Safety of Information Technology Equipment Including Electrical Business Equipment 2.
PAGE 20
Product Safety Requirements RBS 2000 In addition to this the product fulfills the environmental requirements. The RBS is so designed and constructed that, under all conditions of normal use and under a likely fault condition, it protects against personal injury from electrical shock and other hazards. The RBS is protected against serious fire originating in the equipment as well as mechanical hazards in the equipment, as well as mechanical hazards in the meaning of the applicable standard.
PAGE 21
Environmental Capabilities 3 Environmental Capabilities 3.1 Scope This chapter covers the environmental requirements for the indoor and outdoor temperature non-controlled operation conditions. Subjects covered are: Climatic, Biological, Chemically active substances, Mechanically active substances and Mechanical conditions. 3.2 Terminology Definition of concepts: Normal operation conditions Environmental conditions where all units shall be able to function as specified.
PAGE 22
Environmental Capabilities 3.3 3.4 3.4.1 References IEC 721-3-.. Classification of groups of environmental parameters and their severities. ETSI 300 019-1-.. Classification of environmental conditions. Transport -40 C - +70 C General Conditions The severity of the requirements is in conformity with: IEC 721-3-2 classes 2K4/2B2/2C2/2S2/2M2. and ETS 300 019-1-2 Class 2.3 "PUBLIC transportation". These requirements are valid for equipped cabinets (excluding batteries).
PAGE 23
Environmental Capabilities Note: 3.4.5 The values are average yearly levels of airborne contaminants that can be accepted. It is assumed that one of the contaminants is dominant at each site, and that the other is present in insignificant amounts. Mechanically active substances The severity of these requirements is in conformity with: IEC 721-3-2 class 2S2. and ETS 300 019-1-2 Class 2.3. 3.4.
PAGE 24
Environmental Capabilities The severity of these requirements is in conformity with IEC 721-3-1 classes 1K4/1Z2/1Z3/1Z5. and ETS 300 019-1-1 class 1.2 Requirements Table 3 3.5.3 Environmental Parameters Unit Value Temperature - 25 - +55 Relative Humidity % C 10 -100 Biological conditions The severity of these requirements is in conformity with IEC 721-3-1 class 1B2. and ETS 300 019-1-1 class 1.2 3.5.
PAGE 25
Environmental Capabilities 3.6 Handling -40 C - +70 C 3.6.1 General Conditions This section refers to shorter periods of transport and storage in unpacked conditions. Precautions to avoid condensation before subjecting the equipment to operational conditions are necessary. 3.6.2 Climatic conditions During handling the equipment withstands the conditions stated in Section 3.4.2 on page 20 in this document. 3.6.3 Biological conditions.
PAGE 26
Environmental Capabilities 3.7.2 Climatic conditions. The severity of these requirements are in conformity with: IEC 721-3-3 classes 3K3/3Z2/3Z4. and ETS 300 019-1-3 Class 3.1. Table 5 Environmental Unit Parameters 3.7.3 Temperature Relative Humidity % C Value Normal Condition Safe funct. Non Destr. +5- +40 0 - +45 -10 - +55 5-85 5 - 90 5 - 90 Biological conditions Requirements There are no requirements for this condition. 3.7.
PAGE 27
Environmental Capabilities Table 6 Environmental Parameters Unit Value Vibration sinus: displacement mm acceleration m/s² frequency Hz 0.6 2 2-9 9 -200 Vibration random: 2 3 0.1 m /s 2 3 0.2 acceleration m/s² 3.8 acceleration m/s² 5.
PAGE 28
Environmental Capabilities 3.9 Operation Outdoor -33 C - +45 C The severity of the requirements is in conformity with: IEC 721-3-4 classes 4K2/4Z5/4Z7/4B1/4C2(4C3)/4S2/4M5. and ETS 300 019-1-4 Class 4.1. "NON-WEATHERPROTECTED location", except for the temperature range which is extended to +45 C. This clause refers to the environment which an RBS for outdoor non-weather protected location shall endure.
PAGE 29
Environmental Capabilities Table 9 Environmental Parameters Unit Value Vibration sinus: displacement mm acceleration m/s² frequency Hz 0.6 2 2-9 9 -200 no. of sweep cycles 5 no. of test directions 3 testing method IEC 68-2-6 Vibration random: 2 3 0.1 m /s 2 3 0.2 acceleration m/s² 3.8 acceleration m/s² 5.
PAGE 30
Environmental Capabilities Table 10 Test frequency range 1-15 Hz Required Response Spectrum RRS Shape of RRS as IEC fig 3 Number of time scale histories 1/ testing direction Duration of time scale histories 35 s Number of testing directions 3 There are possibilities to equip the RBS with an optional Seismic Exposure protection device. 3.
PAGE 31
Environmental Capabilities Table 12 Environmental Parameters Unit Temperature Relative humidity Absolute humidity Change of temperature Rain temperature C % 3 g/m C/min C Value Normal Cond. Non destruct. -33 - +55 5 - 100 0.26 -40 6 5 -40 - +70 5 - 100 0.26 - 40 6 5 Vibration sinus: displacement acceleration frequency Vibration random: mm 2 m/s Hz 2 3 3 2-9 10 9 - 200 0.5 2 - 200 0.2 200 - 500 ASD frequency m /s Hz peak acc. duration m/s ms 100 11 none Not Appl.
PAGE 33
Radio Configurations, RBS 2206 4 Radio Configurations, RBS 2206 This chapter describes the RBS 2206 radio configurations and their performance. All configurations, especially GSM 1900, are not described in this chapter. 4.1 Introduction 4.1.1 Mobile Telephone System Figure 2 RBS 2000 in the Ericsson GSM system The Base Station System (BSS) contains two functional entities: the Base Station Controller (BSC) and the Base Transceiver Station (BTS).
PAGE 34
Radio Configurations, RBS 2206 Figure 3 4.1.2 An example of an RBS 2000 servicing a three-cell site Radio Base Station The Radio Base Station 2000 (RBS 2000) is Ericsson’s second generation of RBSs developed to meet the GSM specifications for BTSs. 4.2 4.3 References /GSM:05.05/ GSM Requirements 05.05 phase 2+ Radio Transmission and Reception. /GSM:05.08/ GSM Requirements 05.08 phase 2+ Radio Subsystem Link Control.
PAGE 35
Radio Configurations, RBS 2206 RBS Antenna TRX Combining system TRX + . . . filtering X X = Antenna reference point TRX P007531A Figure 4 Antenna reference point Antenna System The antenna system is constituted by all RF transmission and reception antennas, directed to cover the same area or multi-casting configurations. Base Transceiver Station (BTS) A BTS is a unit operating on a set of frequencies in one cell.
PAGE 36
Radio Configurations, RBS 2206 4.3.1 Cabinet Types RBS 2206 4.3.2 Indoor cabinet with a maximum of six dTRUs/12 TRXs per cabinet Definition of Configurations G9deht_3.6(5)\a Variant indication, lower case letter a-z Number of used transceivers Max number of transceivers Number of antennas dd TMA used Hybrid in dTRU; used Modified frequency band Duplexer in CDU; used Frequency band CDU-type P007365A Figure 5 4.
PAGE 37
Radio Configurations, RBS 2206 • 4.5.1 Filters, amplifies and distributes received signals to receivers belonging to one BTS. Isolation Values The RF isolation between the antenna reference points within any configuration is required to be at least 30 dB. See industry standard / GSM:05.05/. 4.5.2 RX Description The receiver system performance is configuration dependent.
PAGE 38
Radio Configurations, RBS 2206 4.6.1 dTRU Topology Configuration of Hybrid Combiner The dTRU can be configured with or without the hybrid combiner, using two external cables. RX Signals Distributed from Two Ports The RX signals can be distributed from the RX1 and RX2 ports to all four receivers when both transceivers are connected to the same antenna system.
PAGE 39
Radio Configurations, RBS 2206 4.6.2 CDU-F Configurations Basic Configuration F9de_2.4 and F18d_2.4 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 dTRU DPX TX1 TX2 TX2 X TX/ RXA FCOMB TX1 Ant. RX1 RX2 RX1 TX2 RX2 LNA RXB LNA X CXU P007376A Figure 7 F9de_2.4 and F18d_2.4 Characteristics EN/LZT 720 0008 2001-06-26 R1A Number of CDUs 1 Frequency band E-GSM (F9de_2.4) GSM 1800 (F18d_2.4) Max.
PAGE 40
Radio Configurations, RBS 2206 Basic Configuration F9det_2.4 and F18dt_2.4 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 dTRU TX2 DPX DPX TX1 TX2 LNA DPX TX/ RXA X FCOMB TX1 RX1 Ant. RX2 RX1 TX2 RX2 LNA RXB LNA DPX LNA DPX X CXU P007377A Figure 8 F9det_2.4 and F18dt_2.4 Characteristics 38 (421) Number of CDUs 1 Frequency band E-GSM (F9det_2.4) GSM 1800 (F18dt_2.4) Max.
PAGE 41
Radio Configurations, RBS 2206 Basic Configuration F9de_2.6 and F18d_2.6 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 TX1 TX2 dTRU DPX TX2 X TX/ RXA FCOMB TX1 Ant. RX1 RX2 RX1 TX2 RX2 LNA LNA X RXB dTRU TX1 RX1 dTRU RX2 TX1 TX2 TX2 TX1 TX1 RX1 TX2 RX2 CDU-F FCOMB BTS1 BTS2 FCOMB TX2 CDU-F TX1 dTRU TX1 RX1 TX2 FCOMB RX2 dTRU DPX TX1 TX2 TX2 X TX/ RXA FCOMB TX1 Ant.
PAGE 42
Radio Configurations, RBS 2206 Characteristics Number of CDUs 2* Frequency band E-GSM (F9de_2.6) GSM 1800 (F18d_2.6) Max. number of TRXs 6 Number of feeders 2 Number of antennas 2 Antenna configuration TX/RX + RX * Three CDU-Fs support two sectors. Note: 40 (421) The second BTS is only shown to illustrate a 2 x 6 configuration. BTS1 and BTS2 are two different physical implementations of the same basic configuration.
PAGE 43
Radio Configurations, RBS 2206 Basic Configuration F9det_2.6 and F18dt_2.
PAGE 44
Radio Configurations, RBS 2206 Characteristics Number of CDUs 2* Frequency band E-GSM (F9det_2.6) GSM 1800 (F18dt_2.6) Max. number of TRXs 6 Number of feeders 2 Number of antennas 2 Antenna configuration TX/RX + RX TMA configuration ddTMA + ddTMA or ddTMA + rTMA * Three CDU-Fs support two sectors. Note: 42 (421) The second BTS is only shown to illustrate a 2 x 6 configuration. BTS1 and BTS2 are two different physical implementations of the same basic configuration.
PAGE 45
Radio Configurations, RBS 2206 Basic Configuration F9de_2.8 and F18d_2.8 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 dTRU DPX TX1 TX2 TX2 X TX/ RXA FCOMB TX1 RX1 RX1 RX2 LNA TX2 Ant. dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 dTRU DPX TX1 TX2 TX2 X TX/ RXB FCOMB TX1 RX1 RX1 RX2 LNA TX2 CXU P007380A Figure 11 EN/LZT 720 0008 2001-06-26 R1A F9de_2.8 and F18d_2.
PAGE 46
Radio Configurations, RBS 2206 Characteristics 44 (421) Number of CDUs 2 Frequency band E-GSM (F9de_2.8) GSM 1800 (F18d_2.8) Max.
PAGE 47
Radio Configurations, RBS 2206 Basic Configuration F9det_2.8 and F18dt_2.8 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 dTRU DPX TX1 TX2 TX2 DPX LNA DPX TX/ RXA X FCOMB TX1 Ant. RX1 RX1 RX2 LNA TX2 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 dTRU DPX TX1 TX2 TX2 DPX LNA DPX TX/ RXB X FCOMB TX1 Ant. RX1 RX1 RX2 LNA TX2 CXU P007381A Figure 12 EN/LZT 720 0008 2001-06-26 R1A F9det_2.8 and F18dt_2.
PAGE 48
Radio Configurations, RBS 2206 Characteristics 46 (421) Number of CDUs 2 Frequency band E-GSM (F9det_2.8) GSM 1800 (F18dt_2.8) Max.
PAGE 49
Radio Configurations, RBS 2206 Basic Configuration F9de_2.12 and F18d_2.12 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 dTRU DPX TX1 TX2 TX2 X FCOMB TX/ RXA Ant. TX1 RX1 RX1 RX2 LNA TX2 dTRU TX1 RX1 dTRU RX2 TX1 TX2 TX2 TX1 TX1 RX1 TX2 CDU-F FCOMB FCOMB RX2 TX2 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 TX2 dTRU DPX TX1 TX2 FCOMB X TX/ RXA Ant. TX1 RX1 RX1 RX2 LNA TX2 CXU P007382A Figure 13 EN/LZT 720 0008 2001-06-26 R1A F9de_2.12 and F18d_2.
PAGE 50
Radio Configurations, RBS 2206 Characteristics 48 (421) Number of CDUs 3 Frequency band E-GSM (F9de_2.12) GSM 1800 (F18d_2.12) Max.
PAGE 51
Radio Configurations, RBS 2206 Basic Configuration F9det_2.12 and F18dt_2.12 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB RX2 TX1 TX2 dTRU DPX TX2 DPX LNA DPX TX/ RXA X FCOMB TX1 Ant. RX1 RX1 RX2 LNA TX2 dTRU TX1 RX1 dTRU RX2 TX1 TX2 TX2 TX1 TX1 RX1 TX2 RX2 CDU-F FCOMB FCOMB TX2 dTRU TX1 TX1 RX1 TX2 CDU-F FCOMB TX/ RXB RX2 TX1 TX2 dTRU DPX TX2 DPX LNA DPX X FCOMB TX1 Ant. RX1 RX1 RX2 LNA TX2 CXU P007383A Figure 14 EN/LZT 720 0008 2001-06-26 R1A F9de_2.
PAGE 52
Radio Configurations, RBS 2206 Characteristics 4.6.3 Number of CDUs 3 Frequency band E-GSM (F9det_2.12) GSM 1800 (F18dt_2.12) Max. number of TRXs 12 Number of feeders 2 Number of antennas 2 Antenna configuration TX/RX + TX/RX TMA configuration ddTMA + ddTMA CDU-G Configurations Basic Configuration G9de_2.2, G18d_2.2 and G19d_2.2 dTRU TX1 TX1 RX1 RX1 CDU-G DPX LNA X RX2 TX/ RXA Ant. TX2 TX2 RX2 DPX LNA X TX/ RXB CXU P007384A Figure 15 G9de_2.2, G18d_2.2 and G19d_2.
PAGE 53
Radio Configurations, RBS 2206 Basic Configuration G9det_2.2, G18dt_2.2 and G19dt_2.2 dTRU TX1 TX1 RX1 RX1 CDU-G LNA DPX DPX LNA DPX X Ant. RX2 TX2 TX2 RX2 LNA TX/ RXA DPX DPX LNA DPX X TX/ RXB CXU ddTMA P007385A Figure 16 G9det_2.2, G18dt_2.2 and G19dt_2.2 Characteristics EN/LZT 720 0008 2001-06-26 R1A Number of CDUs 1 Frequency band E-GSM (G9det_2.2) GSM 1800 (G18dt_2.2) GSM 1900 (G19dt_2.2) Max.
PAGE 54
Radio Configurations, RBS 2206 Basic Configuration G9deh_2.4, G18dh_2.4 and G19dh_2.4 dTRU TX1+TX2 TX1 RX1 RX1 CDU-G DPX LNA X TX/ RXA RX2 Ant. dTRU TX1+TX2 TX2 RX1 RX2 RX2 DPX LNA X TX/ RXB CXU P007386A Figure 17 G9deh_2.4, G18dh_2.4 and G19dh_2.4 Characteristics 52 (421) Number of CDUs 1 Frequency band E-GSM (G9deh_2.4) GSM 1800 (G18dh_2.4) GSM 1900 (G19dh_2.4) Max.
PAGE 55
Radio Configurations, RBS 2206 Basic Configuration G9deht_2.4, G18dht_2.4 and G19dht_2.4 dTRU TX1+TX2 TX1 RX1 RX1 CDU-G LNA DPX DPX LNA DPX X TX/ RXA RX2 Ant. TX1+ dTRU TX2 TX2 RX1 RX2 LNA RX2 DPX DPX CXU LNA DPX X TX/ RXB ddTMA P007387A Figure 18 G9deht_2.4, G18dht_2.4 and G19dht_2.4 Characteristics EN/LZT 720 0008 2001-06-26 R1A Number of CDUs 1 Frequency band E-GSM (G9deht_2.4) GSM 1800 (G18dht_2.4) GSM 1900 (G19dht_2.4) Max.
PAGE 56
Radio Configurations, RBS 2206 Basic Configuration G9deh_3.6, G18dh_3.6 and G19dh_3.6 dTRU TX1+TX2 TX1 CDU-G RX1 RX1 RX2 LNA DPX TX/ RXA X Ant. dTRU TX1+ TX2 TX2 RX1 RX2 RX2 dTRU TX1+ TX2 LNA DPX TX/ RXB X TX TX1 CDU-G RX1 LNA RX2 DPX X Ant. dTRU BTS1 TX1+ TX2 RX1 LNA RX2 dTRU BTS2 TX2 TX1+ TX2 DPX X DPX X TX1 CDU-G RX1 RX1 RX2 LNA TX TX/ RXA Ant. TX1+ dTRU TX2 RX1 TX2 RX2 RX2 LNA DPX X TX/ RXB CXU P007388A Figure 19 54 (421) G9deh_3.6, G18dh_3.
PAGE 57
Radio Configurations, RBS 2206 Characteristics Number of CDUs 2* Frequency band E-GSM (G9deh_3.6) GSM 1800 (G18dh_3.6) GSM 1900 (G19dh_3.6) Max. number of TRXs 6 Number of feeders 3 Number of antennas 3 Antenna configuration TX/RX + TX/RX + TX * Three CDU-Fs support two sectors. Note: EN/LZT 720 0008 2001-06-26 R1A The second BTS is only shown to illustrate a 2 x 6 configuration. BTS1 and BTS2 are two different physical implementations of the same basic configuration.
PAGE 58
Radio Configurations, RBS 2206 Basic Configuration G9deht_3.6, G18dht_3.6 and G19dht_3.6 dTRU TX1+TX2 TX1 RX1 RX1 CDU-G LNA RX2 DPX DPX LNA DPX X TX/ RXA Ant. TX1+ dTRU TX2 RX1 TX2 RX2 LNA RX2 DPX DPX LNA DPX X TX/ RXB ddTMA dTRU TX1+ TX2 TX TX1 CDU-G RX1 LNA RX2 DPX X Ant. BTS1 TX1+ dTRU TX2 RX1 TX2 LNA RX2 dTRU TX1+ TX2 TX1 CDU-G RX1 RX1 RX2 LNA BTS2 TX DPX LNA DPX X TX/ RXA DPX X DPX Ant.
PAGE 59
Radio Configurations, RBS 2206 Characteristics Number of CDUs 2* Frequency band E-GSM (G9deht_3.6) GSM 1800 (G18dht_3.6) GSM 1900 (G19dht_3.6) Max. number of TRXs 6 Number of feeders 3 Number of antennas 3 Antenna configuration TX/RX + TX/RX + TX TMA configuration ddTMA + ddTMA * Three CDU-Fs support two sectors. Note: EN/LZT 720 0008 2001-06-26 R1A The second BTS is only shown to illustrate a 2 x 6 configuration.
PAGE 60
Radio Configurations, RBS 2206 Basic Configuration G9deh_4.8, G18dh_4.8 and G19dh_4.8 dTRU TX1+TX2 TX1 RX1 RX1 TX/ RXB CDU-G LNA DPX X RX2 Ant. TX1+ dTRU TX2 RX1 LNA RX2 dTRU TX TX2 TX1+ TX2 TX1 RX1 RX1 DPX X TX/ RXB CDU-G LNA DPX X RX2 Ant. TX1+ dTRU TX2 TX TX2 RX1 LNA RX2 DPX X CXU P007390A Figure 21 58 (421) G9deh_4.8, G18dh_4.8 and G19dh_4.
PAGE 61
Radio Configurations, RBS 2206 Characteristics EN/LZT 720 0008 2001-06-26 R1A Number of CDUs 2 Frequency band E-GSM (G9deh_4.8) GSM 1800 (G18dh_4.8) GSM 1900 (G19dh_4.8) Max.
PAGE 62
Radio Configurations, RBS 2206 Basic Configuration G9deht_4.8, G18dht_4.8 and G19dht_4.8 dTRU TX1+TX2 TX1 RX1 RX1 CDU-G LNA DPX DPX LNA DPX TX/ RXA X RX2 Ant. ddTMA TX1+ dTRU TX2 RX1 LNA RX2 dTRU TX TX2 TX1+ TX2 TX1 RX1 RX1 DPX X CDU-G LNA DPX DPX LNA DPX TX/ RXB X RX2 Ant. ddTMA TX1+ dTRU TX2 TX TX2 RX1 LNA RX2 DPX X CXU P007391A Figure 22 60 (421) G9deht_4.8, G18dht_4.8 and G19dht_4.
PAGE 63
Radio Configurations, RBS 2206 Characteristics EN/LZT 720 0008 2001-06-26 R1A Number of CDUs 2 Frequency band E-GSM (G9deht_4.8) GSM 1800 (G18dht_4.8) GSM 1900 (G19dht_4.8) Max.
PAGE 64
Radio Configurations, RBS 2206 Basic Configuration G9deh_6.12, G18dh_6.12 and G19dh_6.12 dTRU TX1+TX2 TX1 CDU-G RX1 RX1 RX2 TX1+ dTRU TX2 RX1 LNA DPX X TX2 TX LNA RX2 TX1+ dTRU TX2 RX1 DPX X TX1 CDU-G LNA RX2 TX/ RXA TX DPX X Ant. dTRU TX1+ TX2 TX2 RX1 LNA RX2 dTRU TX TX1+ TX2 TX1 CDU-G RX1 RX1 RX2 TX1+ dTRU TX2 RX1 LNA DPX DPX X X TX2 TX LNA RX2 TX/ RXB DPX X CXU P007392A Figure 23 62 (421) G9deh_6.12, G18dh_6.12 and G19dh_6.
PAGE 65
Radio Configurations, RBS 2206 Characteristics EN/LZT 720 0008 2001-06-26 R1A Number of CDUs 3 Frequency band E-GSM (G9deh_6.12) GSM 1800 (G18dh_6.12) GSM 1900 (G19dh_6.12) Max.
PAGE 66
Radio Configurations, RBS 2206 Basic Configuration G9deht_6.12, G18dht_6.12 and G19dht_6.12 dTRU TX1+TX2 TX1 CDU-G RX1 RX1 RX2 LNA DPX TX/ RXA X DPX LNA DPX ddTMA TX1+ dTRU TX2 RX1 TX TX2 LNA RX2 dTRU TX1+ TX2 TX1 RX1 RX1 DPX X CDU-G RX2 LNA TX DPX X Ant. dTRU TX1+ TX2 TX2 RX1 LNA RX2 dTRU TX TX1+ TX2 TX1 RX1 RX1 RX2 DPX X CDU-G LNA DPX DPX LNA DPX X TX/ RXB ddTMA TX1+ dTRU TX2 RX1 TX2 TX LNA RX2 DPX X CXU P007393A Figure 24 64 (421) G9deht_6.
PAGE 67
Radio Configurations, RBS 2206 Characteristics 4.6.4 Number of CDUs 3 Frequency band E-GSM (G9deht_6.12) GSM 1800 (G18dht_6.12) GSM 1900 (G19dht_612) Max. number of TRXs 12 Number of feeders 6 Number of antennas 6 Antenna configuration 2 x TX/RX + 4 x TX TMA configuration ddTMA + ddTMA RX Connection from Antenna to dTRU Connection in the RX path is performed using the CXU. It varies, depending on the basic configurations used and the position in the cabinet.
PAGE 68
Radio Configurations, RBS 2206 Table 16 Cell 1 Cell 2 Table 17 Cell 1 Cell 2 Cell 3 Table 18 Cell 1 Cell 2 Cell 3 Table 19 Cell 1 Alt cell 1 66 (421) 2 x 6 configurations with CDU-G CDU TMA Antenna No. / Connector No. (TMA config. only) 1 / TX / RX1 1 TX / RXA 1 / TX / RX2 2 TX / RXB 3 / TX / RX1 5 TX / RXA 3 / TX / RX2 6 TX / RXB 3 x 4 configurations with CDU-F CDU TMA Antenna No. / Connector No. (TMA config.
PAGE 69
Radio Configurations, RBS 2206 Table 20 Cell 1 Alt. cell 1 Note: 4.7 1 x 8 configurations with CDU-G CDU TMA Antenna No. / Connector No. (TMA config. only) 1 / TX / RX1 1 TX / RXA 1 / TX / RX1 3 TX / RXB 3 / TX / RX1 3 TX / RXA 3 / TX / RX1 5 TX / RXB It is only possible to have one 1 x 8 configuration in the cabinet. One 1 x 8 configuration can be combined with one 1 x 4 configuration. Site Cell Configurations The following section shows site cell configurations in one RBS.
PAGE 70
Radio Configurations, RBS 2206 4.7.1 RBS 2106 and RBS 2206 Configurations CDU-F Single Band Configurations Table 21 CDU-F configurations with a fully-equipped cabinet SCC Configuration TMA Number of Antennas Allowed Number of dTRUs 1 x 12 F9de_2.12 No (2) (0..6) F9det_2.12 M (2) (0..6) F18d_2.12 No (2) (0..6) F18dt_2.12 M (2) (0..6) 2 x F9de_2.6 No (2) (2) (0..3) (0..3) 2 x F9det_2.6 M (2) (2) (0..3) (0..3) 2 x F18d_2.6 No (2) (2) (0..3) (0..3) 2 x F18dt_2.
PAGE 71
Radio Configurations, RBS 2206 Table 22 CDU-F configurations with a partly-equipped cabinet SCC Configuration TMA Number of Antennas Allowed Number of dTRUs 1x4 F9de_2.4 No (2) (0) (0) (0..2) (0) (0) F9det_2.4 M (2) (0) (0) (0..2) (0) (0) F18d_2.4 No (2) (0) (0) (0..2) (0) (0) F18dt_2.4 M (2) (0) (0) (0..2) (0) (0) 2 x F9de_2.4 No (2) (2) (0) (0..2) (0..2) (0) 2 x F9det_2.4 M (2) (2) (0) (0..2) (0..2) (0) 2 x F18d_2.4 No (2) (2) (0) (0..2) (0..2) (0) 2 x F18dt_2.
PAGE 72
Radio Configurations, RBS 2206 Table 24 CDU-G configurations without hybrid combiner in a partly-equipped cabinet only SCC Configuration TMA Number of Antennas Allowed Number of dTRUs 1x2 G9de_2.2 No (2) (0) (0) (0..1) (0) (0) G9det_2.2 M (2) (0) (0) (0..1) (0) (0) G18d_2.2 No (2) (0) (0) (0..1) (0) (0) G18dt_2.2 M (2) (0) (0) (0..1) (0) (0) G19d_2.2 No (2) (0) (0) (0..1) (0) (0) G19dt_2.2 M (2) (0) (0) (0..1) (0) (0) 2 x G9de_2.2 No (2) (2) (0) (0..1) (0..
PAGE 73
Radio Configurations, RBS 2206 SCC 1 x 4 can be achieved as a subset of either SCC 3 x 4 or 2 x 6. SCC 1 x 6 can be achieved as a subset of SCC 2 x 6. SCC 2 x 4 can be achieved as a subset of SCC 3 x 4 or 2 x 6. SCC 3 x 2 can be achieved with use of SCC 3 x 4. SCC 1 x 2 and 1 x 4 require one CDU-G. SCC 2 x 2 and 1 x 6 require two CDU-Gs. SCC 3 x 2 requires three CDU-Gs.
PAGE 74
Radio Configurations, RBS 2206 CDU-F Configurations Table 27 Dual band configurations with CDU-F in a fully- or partly-equipped cabinet SCC Configuration TMA Number of Antennas Allowed Number of dTRUs 1x4|1x8 F9de_2.4 | F18d_2.8 No | No (2) | (2) (0..2) | (0..2) F9det_2.4 | F18dt_2.8 M|M (2) | (2) (0..2) | (0..4) F9de_2.8 | F18d_2.4 No | No (2) | (2) (0..4) | (0..2) F9det_2.8 | F18dt_2.4 M|M (2) | (2) (0..4) | (0..
PAGE 75
Radio Configurations, RBS 2206 There are two options for placing the equipment in the cabinet: GSM 900 on the left-hand side/GSM 1800 on the right-hand side, or the other way round. In each case the middle position is not used. 4.7.3 SW Power Boost Configurations with CDU-G This section does not include any additional site cell configurations, it specifies which configurations support SW power boost. A minimum of two TRXs is required in an antenna system to use SW power boost in the antenna system.
PAGE 76
Radio Configurations, RBS 2206 4.8 Co-Siting with RBS 200 or RBS 2000 Macro Cabinet This section shows expansions where RBSs, forming an original SCC, are co-sited and use TG-synchronization to form one new resulting SCC. Antennas are not shared. 4.8.1 RBS 200 Expanded with 12–TRX Cabinet Co-Siting with RBS 200 Using a Filter Combiner Using TG-synchronization, it is possible to build one resulting SCC from the described SCC in the table below. The antenna systems are not shared between RBSs.
PAGE 77
Radio Configurations, RBS 2206 Co-Siting with RBS 200 Using Hybrid Combiner Using TG-synchronization, it is possible to build one resulting SCC from the described SCC in the table below. The antenna systems are not shared between RBSs. Table 34 Expansion using hybrid combiner Result SCC Original SCC Cabinet Combiner Antennas TMA Original SCC Basic Configuration Antennas 3x8* 3 x 4 ** RBS 200 HCOMB (3) (3) (3) No 3x4 3 x G9deh_2.
PAGE 78
Radio Configurations, RBS 2206 Co-Siting with Single TRU-Based RBS 2000 Using Hybrid Combiner Using TG-synchronization, it is possible to build one resulting SCC from the described SCC in the table below. The antenna systems are not shared between RBSs. Table 36 Expansion using hybrid combiner RBS 1 RBS 2 Result SCC Original Basic Configuration SCC Antennas Original Basic SCC Configuration Antennas 3x8* 3x4 3 x C + 9d_2.4 (2) (2) (2) 3x4 3 x G9deh_2.4 (2) (2) (2) D9de_2.12 3 x C + 9de_2.
PAGE 79
Radio Configurations, RBS 2206 ** 1 x 14, 1 x 16, 1 x 18, 1 x 20 and 1 x 22 are accomplished with a partly-equipped RBS 2. Co-Siting with dTRU-Based RBS 2000 Using Hybrid Combiner Using TG-synchronization, it is possible to build one resulting SCC from the described SCC in the table below. The antenna systems are not shared between RBSs.
PAGE 81
Product Data 5 Product Data 5.
PAGE 82
Product Data Mini DXC Mini Link Installation Material Earthing DF Cable ladder 5.2 Site Power Options The RBS cabinet has three power source options: 5.3 • 120 - 250 V AC mains input power through screw-terminals. The power inputs feed four separate PSUs. A battery back-up +24 V DC may be connected simultaneously as an option. This is the same as the +24 V described below. • +24 V DC. The radio cabinet can operate on +24 V DC from an external power source.
PAGE 83
Product Data 5.3.1 AC Mains Power Connection There are two ways to connect power to the base station. They are: • Single phase line to neutral. • Single phase line to line. Single Phase Line to Neutral RBS interface Circuit breaker RBS L AC Distribution box N P007349A Figure 26 Power connection, L1-N (120 - 250 V AC) One circuit breaker per PSU is required.
PAGE 84
Product Data Table 41 AC mains power requirements Voltage range for specified performance (phase voltage) 120 - 250 V AC Voltage range 108 -275 V AC Frequency 45 - 65 Hz Inrush current, max. 30 A Maximum AC power 1.4 kW x 4 Non-destructive range 0 – 300 V AC Overvoltage <20 ms 300 V (1) (2) (1) 90 V AC with reduced output power. (2) Install external filter and stabilizer if not met.
PAGE 85
Product Data Fuses The +24 V DC cables must be protected with an approved circuit breaker/fuse. Table 44 +24 V DC fuses recommendation Minimum for Safe Function Maximum Allowed Fuse Rating 175 A 200 A +24 V DC Cables The +24 V DC supply is connected to the DC filter by a pair of 2 95 - 150 mm cables, one for + and one for -. 5.3.3 -(48 - 60) V DC Power Supply DC Power Requirements -(48 - 60) V Table 45 DC power requirements Nominal -48/-60 V DC Range -(40.0 - 72.
PAGE 86
Product Data 5.
PAGE 87
Product Data Distribution Switch Unit (DXU-21) The DXU is the central control unit for the RBS. It supports the interface to the BSC, and it collects and transmits the alarms. The DXU controls the power and climate equipment for the RBS. It has a removable compact flashcard which makes it possible to replace a faulty DXU without the need for loading RBS software from the BSC. The DXU is also provided with four connections for transmission lines. It can handle both 2 Mbit (E1) and 1.5 Mbit (T1) PCM links.
PAGE 88
Product Data Configuration Switch Unit (CXU) The task of the CXU is to cross-connect the CDU and the dTRU in the receiver path. The CXU makes it possible to expand or reconfigure a cabinet without moving or replacing any RX cables. The RX inputs/outputs on the dTRU and the CDU are placed in such positions that they minimize the amount of cable types for connecting the CXU with the dTRUs and the CDUs. The CXU is configured by means of software.
PAGE 89
Product Data Measurements 600 2100 1800 1850 250 300 5.4.2 400 P006382B Figure 29 Radio cabinet measurements Recommended distance between the cabinet and cable ladder is 250 mm. A shorter distance makes it difficult to exchange fans and may hinder the air flow. The door projects 50 mm in front of the cabinet.
PAGE 90
Product Data Site Equipment Room 300 250 1000 a2=130o 800 1000 Unit of measurement: mm P006362A Figure 30 Floor layout and space requirements The picture above shows floor layout and space requirements. There must always be a space between the cabinet and the cable ladder for the flow of exhaust air, and to be able to replace fans. If the RBS cabinet must meet earthquake requirements, the space between wall and cabinet must be at least 100 mm, and between cabinets at least 150 mm. 5.4.
PAGE 91
Product Data 5.4.4 Foot Print o 20x75 45 220 (RBS 2202) 320 400 RBS 2206 FRONT 99 400 598 Unit of measurement: mm Figure 31 P008315A Drilling template for RBS 2206 The RBS 2206 has the same footprint as both cabinets in the RBS 200 system, and the RBS 2202 cabinet. The base frame is used as a template to mark new holes for the RBS 2206. Replacements The RBS 2206 cable interfaces are different from the RBS 200 and the RBS 2202.
PAGE 92
Product Data 5.4.7 Climate Endurance Table 49 Climatic endurance Environmental Parameters Units Normal Conditions Non–Destructive Conditions Temperature +5 - +40 -10 - +55 Relative humidity % 5 - 85 5 - 90 C Normal conditions describe the environmental conditions where all units function as specified. Non-destructive conditions describe environmental stress above the limits for normal conditions with no function guaranteed and unspecified degradation.
PAGE 93
Product Data For further information see Section 5.5.1 Distribution Frame with Overvoltage Protection on page 93. 5.4.11 RBS 2206 Connection Interface G703-1 G703-2 ACCU/DCCU FCU +24 V DC DC out G703-4 TD G703-3 RD External Alarms DC-Filter-01 ESB-2 ESB-1 P007683C Figure 32 Connection field for external connectors External cable connections are made in the top section of the cabinet, towards the front, inside the door.
PAGE 94
Product Data Antenna Cable Connections Rx Tx/Rx CDU-F P007937A Figure 33 Connection interface CDU-F Tx/Rx1 Tx/Rx2 CDU-G P007936A Figure 34 Connection interface CDU-G Antenna feeders are directly connected to the CDUs. If bias-injector is used, it is connected directly to the CDU and the antenna feeder is connected to bias-injector.
PAGE 95
Product Data Opto Cable Connections The optical cable inputs between the RBS 2206 and the BBS 2000 are located on, and immediately below, the FCU, see Figure 32 on page 91. Table 52 Opto cable connections Connector Description FCU-RD From BBS FCU-TD To BBS Optional Connections The right part of the cabinet contact field has four pieces of blank panels for optional applications. Blank panels can be exchanged with contact plates in order to equip the area. 5.
PAGE 96
Product Data OVP for External Alarm It is possible to connect 16 external alarms to the DF. Each alarm connection is provided with over-voltage protection. (One OVP module protects two alarm connections.) PCM Overvoltage Module This module contains overvoltage protection for the PCM lines. If the PCM lines are terminated in equipment outside the RBS equipment room, these lines must be protected by overvoltage protectors (OVP) in the DF.
PAGE 97
Product Data 5.5.3 Transmission Network Connection LAPD concentration and LAPD multiplexing can be used to make the transmission resource more efficient. The DXU is equipped with four transmission ports. It is connected to a 2 Mbit/s PCM signal or to a 1.5 Mbit/s signal. Two types of transmission network standards may occur: 2 Mbit/s PCM with 75 unbalanced lines or 120 balanced lines. The second case is 1.5 Mbit/s PCM balanced 100 lines.
PAGE 98
Product Data 5.5.5 Cascading RBS 1 BSC A B C BSC D RBS 2 A B C D Next RBS P007503A Figure 37 Cascade connection RBS 2000 can be cascaded. This means that the unused time slots from the BSC are cascaded from the first base station to a second base station, where the second base station can be located at some distance from the first one. Both base stations use the same transmission line to the BSC.
PAGE 99
Product Data It is possible to supply external transmission equipment from the battery cabinet. The transmission equipment is provided with power supply longer than the RBS. In event of mains failure, the batteries in the BBS 2000 will deliver the necessary power to the radio cabinet as well as to the transmission equipment, if used. This enables the radio system to operate during mains failure.
PAGE 100
Product Data equipment and/or the DC/DC converter until the voltage has dropped to 20.0 V DC. • The temperature of the batteries is too high. • A short circuit occurs between the distribution cables. This will release the circuit breaker in the BFU. The BFU also supplies voltage through two fuses directly to transmission equipment and/or through the DC/DC converter (optional) to transmission equipment. BFU-21 supplies through two fuses (12 A), BFU-22 supplies through one fuse (40 A).
PAGE 101
Product Data 5.7.1 Tower Mounted Amplifier (TMA) ddTMA Ant RX/TX Bias-T Injector RBS TX/RX TMA-CM CDU-F CDU-G 900/1800/1900 MHz P006375B Figure 39 TMA connections for 12 TRX RBSs Function The TMA compensates for signal loss in the receiver antenna cables, reduces system noise and improves uplink sensitivity. The TMA can consist of a duplex filter. Duplex is the function that allows communication in two directions (sending and receiving) on the same communication channel.
PAGE 102
Product Data Dual Duplex TMA (ddTMA) Antenna ddTMA TX/RX Figure 40 RBS P007931A Dual Duplex TMA (ddTMA) The ddTMA is to be used for GSM 900, for all macro base stations and 1800 or 1900 systems for RBS 2206 and RBS 2106. A Dual Duplex TMA contains two duplex filters and a low noise amplifier. The first duplex filter splits up the signal path from the antenna into one transmitter and one receiver path. The received signal is amplified in the low noise amplifier.
PAGE 103
Product Data 117 298 100 ANT TX/RX Unit of measurement: mm Figure 41 P004347A Dimensions of ddTMA Table 55 Unit Weight Dimensions ddTMA 4 kg without mounting bracket height 298 mm width 117 mm depth 100 mm Bias-Injector The bias-injectors are used to provide the TMA with DC power from the TMA-CM, over the RX/TX feeder cables. The bias-injector is mounted between the antenna feeder and the CDU. TMA-CM Six bias-injectors can be connected to one TMA-CM.
PAGE 104
Product Data 5.7.2 Antenna System Connections 3 x 2 CDU-F Number of cells Type of CDU Number of TRX/cell P008302A Figure 42 CDU configuration key The various configurations available for cabinets are described using the following system: In the example above, the cabinet is fitted with three CDUs, each connected to two TRXs; the total number of TRXs is thus six in this case. The CDU is type CDU-F. The RF cables between each CDU and its associated dTRUs are standardized and do not normally change.
PAGE 105
Product Data Table 56 3x2 CDU-F and 3x4 CDU-F Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 RX RX CellA:RXB TX/RX TX/RX CellB:DX1 RX RX CellB:RXB TX/RX TX/RX CellC:DX1 RX RX CellC:RXB 2 B 2 C From the configuration in figure above, the following configurations can be derived: • 1x2 CDU-F • 2x2 CDU-F • 1x4 CDU-F • 2x4 CDU-F Cell A DX1 DX2 P008229A Figure 44 Configuration scheme, 1x8 CDU-F Table 57 EN/LZT 720 0008 2001-06-26 R1A 1x8 CDU-F Cell
PAGE 106
Product Data Cell A DX1 DX2 P008228A Figure 45 Configuration scheme, 1x12 CDU-F Table 58 1x12 CDU-F Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 3 TX/RX TX/RX CellA:DX2 Cell A DX1 RXB Cell B RXB DX1 P008232A Figure 46 104 (421) Configuration scheme, 2x6 CDU-F © Ericsson Radio Systems AB — All Rights Reserved — EN/LZT 720 0008 R1A 2001-06-26
PAGE 107
Product Data Table 59 2x6 CDU-F Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 RX RX CellA:RXB TX/RX TX/RX CellB:DX1 RX RX CellB:RXB B 3 Cell A DX1 RXB Cell B DX1 DX2 P008230A Figure 47 Configuration scheme, 1x4+1x8 CDU-F Table 60 Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 RX RX CellA:RXB 2 TX/RX TX/RX CellB:DX1 3 TX/RX TX/RX CellB:DX2 B EN/LZT 720 0008 2001-06-26 R1A 1x4+1x8 CDU-F © Ericsson Radio Systems AB — All R
PAGE 108
Product Data Cell A DX1 Cell B DX2 DX1 RXB P008231A Figure 48 Configuration scheme, 1x8+1x4 CDU-F Table 61 1x8+1x4 CDU-F Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 2 TX/RX TX/RX CellA:DX2 3 TX/RX TX/RX CellB:DX1 RX RX CellB:RXB B GSM 900/1800 CDU-F, configurations with TMA Cell A TMA TMA DX1 RXB TMA DX1 Cell B RXB Cell C TMA TMA DX1 RXB TMA P008260A Figure 49 106 (421) Configuration scheme, 3x2 CDU-F and 3x4 CDU-F © Ericsson Radio Systems
PAGE 109
Product Data Table 62 3x2 CDU-F and 3x4 CDU-F Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 RX RX CellA:RXB TX/RX TX/RX CellB:DX1 RX RX CellB:RXB TX/RX TX/RX CellC:DX1 RX RX CellC:RXB 2 B 2 C From the configuration in figure above, the following configurations can be derived: • 1x2 CDU-F • 2x2 CDU-F • 1x4 CDU-F • 2x4 CDU-F TMA DX1 Cell A TMA DX2 P008255A Figure 50 Configuration scheme, 1x8 CDU-F Table 63 EN/LZT 720 0008 2001-06-26 R1A 1x8 CD
PAGE 110
Product Data TMA Cell A TMA DX1 DX2 P008256A Figure 51 Configuration scheme, 1x12 CDU-F Table 64 1x12 CDU-F Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 3 TX/RX TX/RX CellA:DX2 Cell B Cell A TMA TMA TMA DX1 RXB DX1 TMA RXB P008257A Figure 52 Configuration scheme, 2x6 CDU-F Table 65 Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 TX/RX TX/RX CellA:RXB TX/RX TX/RX CellB:DX1 RX RX CellB:RXB B 108 (421) 2x6 CDU-F 3 © Eri
PAGE 111
Product Data Cell B Cell A TMA TMA TMA DX1 RXB DX1 TMA DX2 P008259A Figure 53 Configuration scheme, 1x4+1x8 CDU-F Table 66 1x4+1x8 CDU-F Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 RX RX CellA:RXB 2 TX/RX TX/RX CellB:DX1 3 TX/RX TX/RX CellB:DX2 B Cell B Cell A TMA TMA DX1 DX2 TMA DX1 TMA RXB P008258A Figure 54 EN/LZT 720 0008 2001-06-26 R1A Configuration scheme, 1x8+1x4 CDU-F © Ericsson Radio Systems AB — All Rights Reserved — 109 (421)
PAGE 112
Product Data Table 67 1x8+1x4 CDU-F Cell CDU Connection Signal Labelling A 1 TX/RX TX/RX CellA:DX1 2 TX/RX TX/RX CellA:DX2 3 TX/RX TX/RX CellB:DX1 RX RX CellB:RXB B GSM 900/1800 CDU-G, configurations without TMA Cell A DX1 DX2 Cell C Cell B DX1 DX2 DX1 DX2 P008223A Figure 55 Configuration scheme, 3x2 CDU-G and 3x4 CDU-G Table 68 3x2 CDU-G and 3x4 CDU-G Cell CDU Connection Signal Labelling A 1 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX/RX CellA:DX2 TX/RX1 TX/RX CellB:
PAGE 113
Product Data Cell A DX1 TX1 DX2 TX2 P008225A Figure 56 Configuration scheme, 1x8 CDU-G Table 69 1x8 CDU-G Cell CDU Connection Signal Labelling A 1 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX CellA:TX1 TX/RX1 TX/RX CellA:DX2 TX/RX2 TX Cell:ATX2 2 Cell A DX1 TX1 TX2 TX3 DX2 TX4 P008226A Figure 57 EN/LZT 720 0008 2001-06-26 R1A Configuration scheme, 1x12 CDU-G © Ericsson Radio Systems AB — All Rights Reserved — 111 (421)
PAGE 114
Product Data Table 70 1x12 CDU-G Cell CDU Connection Signal Labelling A 1 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX CellA:TX1 TX/RX1 TX CellA:TX2 TX/RX2 TX CellA:TX3 TX/RX1 TX/RX CellA:DX2 TX/RX2 TX CellA:TX4 2 3 Cell B Cell A DX1 DX2 TX1 TX2 DX1 DX2 P008224A Figure 58 Table 71 2x6 CDU-G Cell CDU Connection Signal Labelling A 1 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX/RX CellA:DX2 TX/RX1 TX CellA:TX1 TX/RX2 TX CellA:TX2 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX/RX CellA:DX
PAGE 115
Product Data GSM 900/1800 CDU-G, configurations with TMA Cell A TMA TMA DX1 TMA DX1 DX2 Cell C Cell B DX2 TMA DX1 TMA TMA DX2 P008261A Figure 59 Configuration scheme, 3x2 CDU-G and 3x4 CDU-G Table 72 3x2 CDU-G and 3x4 CDU-G Cell CDU Connection Signal Labelling A 1 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX/RX CellA:DX2 TX/RX1 TX/RX CellB:DX1 TX/RX2 TX/RX CellB:DX2 TX/RX1 TX/RX CellC:DX1 TX/RX2 TX/RX CellC:DX2 B C 2 3 From the configuration above, the following configur
PAGE 116
Product Data Cell A TMA DX1 TX1 TMA DX2 TX2 P008233A Figure 60 Configuration scheme, 1x8 CDU-G with TMA Table 73 1x8 CDU-G Cell CDU Connection Signal Labelling A 1 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX CellA:TX1 TX/RX1 TX/RX CellA:DX2 TX/RX2 TX Cell:ATX2 2 Cell A TMA DX1 TX1 TMA TX2 TX3 DX2 TX4 P008262A Figure 61 114 (421) Configuration scheme, 1x12 CDU-G © Ericsson Radio Systems AB — All Rights Reserved — EN/LZT 720 0008 R1A 2001-06-26
PAGE 117
Product Data Table 74 1x12 CDU-G Cell CDU Connection Signal Labelling A 1 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX CellA:TX1 TX/RX1 TX CellA:TX2 TX/RX2 TX CellA:TX3 TX/RX1 TX/RX CellA:DX2 TX/RX2 TX CellA:TX4 2 3 TMA Cell A Cell B TMA TMA DX1 DX2 TX1 TX2 TMA DX1 DX2 P008263A Figure 62 Configuration scheme, 2x6 CDU-G Table 75 2x6 CDU-G Cell CDU Connection Signal Labelling A 1 TX/RX1 TX/RX CellA:DX1 TX/RX2 TX/RX CellA:DX2 TX/RX1 TX CellA:TX1 TX/RX2 TX CellA:
PAGE 119
Unit Description, DXU-21 6 Unit Description, DXU-21 This chapter describes DXU-21. The DXU is a CPU, which acts as an interface between the transmission network and the transceivers. It also extracts timing information from the PCM link and generates a timing reference for the RBS. The DXU also performs supervisory tasks. The DXU-21 transmission interface has long haul capability and can be run on both 1.544 Mbit/s (T1) and 2.048 Mbit/s (E1) PCM links. 6.
PAGE 120
Unit Description, DXU-21 6.2 Block Diagram DXU 13 MHz test Compact Flash Card Interface Part of timing system OVCXO+DAC CPU System OPT-inputs OPT-outputs External alarms Vcc for backplane memory MMI IOM-bus Ext. Sync. Source (GPS) Cabinet LEDs Ext. Sync. Source (ESB) Rack/Shelf/unit pos Ext. Ref source Ext. O&M (EOM) O&M Terminal (OMT) Timing bus EPC bus Transm. lines G.703-A G.703-B G.703-C Local bus Transm. Interface Controller Communication switch system G.
PAGE 121
Unit Description, DXU-21 • 6.2.1 Compact Flash Card CPU System The heart of the DXU-21 is a 32–bit embedded controller with a PPC 405 processor core with interfaces to a wide range of peripherals. The CPU system consists of: 6.2.2 2 • I C controller • Ethernet 10/100 Mbit/s (full-duplex) controller, MAC • SDRAM memory • FLASH memory • ASIC GARP • Compact Flash Card Communication Switch System This system block contains circuits that handle traffic between the BSC and the TRUs. 6.2.
PAGE 122
Unit Description, DXU-21 6.3 Functions The DXU serves as the Central Main CPU node and its main functions are: 6.4 • Provides the RBS with an interface to the transport network through four fixed E1/T1 transmission ports. • Handles incoming traffic, controls and supervises information and sends it to its destination within the RBS. • Provides frequency reference signals and clock signals for circuits within the RBS. • Stores and executes RBS SW. SW is stored on a removable flash card.
PAGE 123
Unit Description, DXU-21 The DXU is tested for Electro Magnetic Compability (EMC) and complies with the following standards: • Fast transient test: EN 301 489-1, 0.5 kV • Surge test: ITU-T K.45 Test no. 2.1.1.a (CM), basic level: 1.5 kV Test no. 2.1.1.b (DM), basic level: 1.5 kV An EMC environment exceeding the above values requires additional overvoltage protection of the G.703 interface. External Alarm Inputs Through this interface it is possible to connect up to 16 binary alarms.
PAGE 124
Unit Description, DXU-21 IOM-Bus 2 This interface consists of three individual I C ports. It is accessed through the lower backplane connector and is used to communicate with the CDU, CXU and cabinet ID. 2 An I C bus is reserved for reading a memory device which identifies the source for the system. The interface is accessed through the lower backplane connector. Y-Links This interface is used for communication with the dTRUs and sTRUs. The Y-interface consists of 12 separate Y-links.
PAGE 125
Unit Description, DXU-21 ESB This interface is used to synchronize several transceiver groups in the same cell, for example when one cell is built up by more than one RBS, or one cell is split between two RBSs. Note that a master-slave configuration, as in RBS 2202, is regarded as one transceiver group. The interface is accessed on the front of the DXU through a D-sub 9–pin male connector marked "ESB". 6.4.1 OMT The OMT port is used to communicate with the Operation and Maintenance Terminal.
PAGE 126
Unit Description, DXU-21 6.4.3 Indicators and Buttons There are 11 indicators located on the front panel (as shown in the table below) and two buttons for DXU Reset and Local/remote. For further information on indicators, see chapter Operation and Maintenance Support. Table 77 6.
PAGE 127
Unit Description, dTRU 7 Unit Description, dTRU The dTRU (double Transceiver Unit) is a 2-TRX replaceable unit. A TRX is a transmitter/receiver and signal processing unit which transmits and receives one carrier. There are different versions of dTRU depending on the frequency band and modulation method, that is only GMSK or EDGE. The dTRU has two transmit antenna terminals and four receive antenna terminals. The dTRU features a built-in hybrid combiner.
PAGE 128
Unit Description, dTRU • CPU-system • DSP-system • RC-system • Radio system CPU System The CPU system is a control unit in the RBS. Basically it consists of a CPU, support logic, memory and logic for handling the interfaces. DSP System The DSP system performs all baseband signal processing necessary for one TRX. For downlink, this includes Terrestrial Protocol Handling (TPH), encoding, ciphering and burst generation. For uplink it includes equalization, combining, decoding and TPH.
PAGE 129
Unit Description, dTRU 7.3 External Interfaces View of backplane dTRU Y-link/-TX control bus Power connector P007454A Figure 67 dTRU, front panel and backplane The dTRU has the following external interfaces: 7.3.1 • CDU-TX control bus, IOM bus • IOM bus, LEDs and buttons interface • RX (front) • TX (front) • Y-link Indicators and Buttons On the front panel there are five indicators (see the following table) and two buttons, one for TRU Reset, and the other for Local/remote mode change.
PAGE 130
Unit Description, dTRU Table 79 7.3.2 Indicators Indicator Colour Fault Red Operational Green RF off Yellow Local mode Yellow The Backplane The Y-link, CDU-TX control bus, system voltage and connectors are located on the backplane. See Figure 67 on page 127. 7.4 Technical Data Table 80 128 (421) dTRU technical data Height 400 mm (9 HE x 44.45 mm) Width 71 mm (14 TE x 5.08 mm) Depth 270 mm Weight 8 kg Max. power consumption 485 W Max.
PAGE 131
Unit Decription, CDU-G and CDU-F 8 Unit Decription, CDU-G and CDU-F This chapter describes the CDU-F and CDU-G for RBS 2206. The Combining and Distribution Unit (CDU) is the interface between Transceivers (TRUs) and the antenna system. The CDU enables several TRUs to share antennas. A range of CDU types have been developed to support different configurations. Information about which configurations can be built with the various types of CDU is contained in chapter Radio Configurations, RBS 2206.
PAGE 132
Unit Decription, CDU-G and CDU-F TX Part Description CDU-G consists of two identical TX chains. The TX part contains a lowpass filter and a duplex filter. The lowpass filter secures the required reverse isolation. It also reduces spuriouses from the transmitter on the frequencies higher than the TX band. The duplex filter (DPX) allows using a single antenna for both transmitting and receiving. There is an Measurement Coupler Unit (MCU) between the DPX and antenna connector.
PAGE 133
Unit Decription, CDU-G and CDU-F 8.1.2 CDU-F CDU-F P007450B Figure 70 CDU-F CDU-F has four filter cavities grouped internally two and two. The two filters form a combiner for two TX signals and can be combined with a CNU to a combiner for four signals, or connected to another CDU to form a combining network for six signals. The combined signals are fed through a lowpass TX filter to a duplex filter. The duplex filter allows the use of a single antenna both for transmitting and receiving.
PAGE 134
Prin1 Prin2 Unit Decription, CDU-G and CDU-F TX1-1 CNU TX1-1+TX1-2 TXLP FC TX1-2 MCU Pr1out Pr2out Pr1out Pr2out TXBP-DPX TX/RX TX2-1 RXBP-DPX RXBP TX2-1+TX2-2 RX MR RX2 RX1 LNA TXin CDU bus DC in Prin1 Prin2 CPU Power supply supervision TX2-2 DC CXU P007451A Figure 71 Block diagram of CDU-F The tuning of the filter cavities is controlled by a measurement receiver and a CPU unit.
PAGE 135
Unit Decription, CDU-G and CDU-F 8.3 External Interfaces CDUs have the following external interfaces: 8.3.
PAGE 137
Unit Description, CXU-10 9 Unit Description, CXU-10 The Configuration Switch Unit (CXU) is a unit that distributes the RX signals from the CDU to the dTRU within the same RBS. The CXU supports both GMSK and 8-PSK. One CXU can support up to three CDUs. To configure the CXU, six switches can be set to connect different CDUs with different dTRUs. A block diagram of the CXU is shown in. The CXU is a dual band product, which means it can be used for both 900 MHz and 1800 MHz.
PAGE 138
Unit Description, CXU-10 The CXU is also connected to a CDU-bus. By sending data through the CDU-Bus, the switches can be set to fulfil one of six supported configurations. Inside the CXU there are also some splitters to distribute the incoming RX-signals to the switches and in some cases directly to an out port. The RF cables between CDU and CXU are supervised in the CXU. The RF cables between CXU and dTRU are supervised in the dTRU. The CDU-bus cable is monitored by the DXU. 9.
PAGE 139
Unit Description, FCU-01 10 Unit Description, FCU-01 The Fan Control Unit (FCU) controls and supervises the fans in the RBS 2206. It is the MMI for the fans, that is, it has indicators for fan status information. The FCU is connected to the EPC-bus that handles communication for the climate and power function in the RBS. The interface towards the EPC-bus consists of an optical fibre interface. The interface towards each fan consists of one variable DC voltage output for the power feed and one alarm input.
PAGE 140
Unit Description, FCU-01 The FCU has the following external interfaces: 10.3 • Power in • EPC-bus in • EPC-bus out • Fan power and alarm (1 – 4) Indicator The FCU has seven LED indicators that show the status of the FCU, its communication and fan status. Table 85 Indicator Indicator Colour Fault Red Operational Green EPC-bus fault Yellow Fan 1 fault Red Fan 2 fault Red Fan 3 fault Red Fan 4 fault Red 10.4 Electrical Data 10.4.1 Input Data Table 86 10.4.
PAGE 141
Unit Description, FCU-01 Table 88 Alarm pos. Upos 5 - 30 V DC Alarm neg. Uneg < Upos - 2.4 V DC Current Ino_alarm 5 - 20 mA Table 89 10.4.4 2001-06-26 Alarm Alarm pos. Upos 5 - 30 V DC Alarm neg. Uneg < 2 V DC Current Ialarm < 5 mA Dimensions and Weight Table 90 EN/LZT 720 0008 No alarm R1A FCU-01 dimensions and weight Height 195 mm Width 98 mm Depth 45 mm Weight 0.
PAGE 143
Unit Description, DC-Filter 01 11 Unit Description, DC-Filter 01 The DC-filter is the interface for +24 V DC supply to the cabinet. It distributes +24 V DC to the Internal Distribution Module (IDM). 11.1 Functions The DC-filter has the following functions: 11.
PAGE 144
Unit Description, DC-Filter 01 11.4 Dimensions and Weight Table 92 142 (421) FCU-filter-01 dimensions and weight Height 293.5 mm Width 164 mm Depth 70 mm Weight 6 kg (incl.
PAGE 145
Unit Description, PSU 1200 W 12 Unit Description, PSU 1200 W This chapter describes the Power Supply Unit (PSU) which is available in two versions: PSU AC and PSU DC. The PSUs constantly regulate and deliver 1200 W off power over the whole output range from 22 to 29 V DC. 12.1 PSU AC The PSU rectifies the incoming AC power to the regulated DC voltage required. AC Mains Bridge Boost DC/DC Output Filter Block Diagram Input Filter 12.1.
PAGE 146
Unit Description, PSU 1200 W Boost Converter Draws a sinusoidal input current in phase with the input voltage, enabling the power supply to have a high power factor and low distribution on input current. The output from the boost converter is 400 V DC. DC/DC Converter A phase-shifted, soft-switched, full-bridge converter that converts the incoming 400 V DC to 24 V DC output voltage.
PAGE 147
Unit Description, PSU 1200 W • Input mains fault • Input undervoltage • Input overvoltage • Output overvoltage hardware alarm • Output overvoltage software alarm • High internal temperature • Power limit • Short circuit/overload for more than one minute Voltage Adjustment The desired value of the output voltage of the rectifier is set by the ECU function in the DXU. The PSU has a default value of 27.2 V. The DXU adjusts the individual PSU voltage to maintain the required system voltage.
PAGE 148
Unit Description, PSU 1200 W 12.1.3 External Interfaces PSU-AC OUTPUT +27.2 VDC 1200 W Fault Operationa l EPC-bus TD RD INPU T 120-2 5 50/60 0 VAC Hz 12A P007124A Figure 77 PSU AC The PSU has the following external interfaces, all located on the front: • input 120 – 250 V AC • output +27.2 V DC • EPC Bus (Opto) Note: 12.1.4 The PSU has no backplane connections.
PAGE 149
Unit Description, PSU 1200 W Table 93 12.1.5 Indicator Colour Fault Red Operational Green EPC bus fault Yellow Input Data Table 94 Input data Nominal input voltage 120 to 250 V AC Permitted variation input voltage 108 Frequency 45-65 Hz Current < 8A (at 180 - 275 V AC) 1) to 275 V AC <12 A (at 108 - 140 V AC) Inrush current < 30 A peak Internal fuse 15 A (slow) Efficiency > 83% Power factor cos ϕ > 0.95 Non-destructive voltage 0 - 300 V AC Pulses < 20 ms 300 V AC Max.
PAGE 150
Unit Description, PSU 1200 W 12.2 PSU DC The PSU DC converts incoming voltage ranging from -39 V to -72 V DC to the regulated DC voltage that is required. DC Input DC/DC Output Filter Block Diagram Input Filter 12.2.
PAGE 151
Unit Description, PSU 1200 W Control and Supervision Circuits The control and supervision circuits support: • load sharing between parallel units • remote on/off • alarms The output voltage can be adjusted between 22 V to 29 V DC. The control and supervision is achieved through an optical signal interface connector on the front of the PSU. 12.2.
PAGE 152
Unit Description, PSU 1200 W Load sharing is achieved by the DXU function when using more than one PSU, load sharing of parallel PSUs is achieved by adjusting the individual voltages to each PSU in the system. Output voltage from the PSU is adjusted to between 26.2 V and 28.5 V depending on battery temperature. Power Limitation When the temperature exceeds the permissable value, the PSU reduces the power and an alarm is sent to the DXU.
PAGE 153
Unit Description, PSU 1200 W • input -48/-60 V DC • output +27.2 V DC • EPC Bus (Opto) Note: 12.2.4 The PSU has no backplane connections. Indicators There are three indicators located on the front panel: Table 97 12.2.5 Indicator Colour Fault Red Operational Green EPC bus fault Yellow Input Data Table 98 12.2.
PAGE 154
Unit Description, PSU 1200 W 12.2.7 Dimensions and Weight Table 100 152 (421) DC-DC Converter dimensions and weight Height 262 mm Width 61 mm Depth 225 mm Weight 3.
PAGE 155
Unit Description, ACCU/DCCU 13 Unit Description, ACCU/DCCU This chapter describes the AC Connection Unit (ACCU) and the DC Connection Unit (DCCU). They distribute primary power to the PSUs. There is only one ACCU or DCCU in the cabinet, depending on the type of incoming power. 13.1 ACCU The ACCU consists of a box with: 13.1.
PAGE 156
Unit Description, ACCU/DCCU • Terminal block for incoming AC mains cables • Four outgoing cables to the PSUs Input Data Table 101 Frequency 45 - 65 Hz Voltage 90 - 275 V AC External fuses 4 pcs, max. 16 A Cable diameter 8.5 - 12.5 mm Conductor area 1.5 - 2.5 mm Number of conductors 3 (L, N, PE) 2 Output Data Four cables with connectors according to IEC 320 and matching the PSU AC inlet. Table 102 13.1.3 2 Conductor area 1.
PAGE 157
Unit Description, ACCU/DCCU 13.2.2 External Interfaces DCCU P007833A Figure 81 DCCU The DCCU has the following interfaces: • Terminal block for four incoming DC supply cables • Four outgoing cables to the PSUs Input Data Table 104 Input data Voltage - (40 - 72) V DC External fuses 4 pcs, max. 40 A Cable diameter 4.5 - 7 mm Conductor area 6 - 10 mm Number of conductors 2 2 Output Data Four cables with connectors matching the PSU DC inlet.
PAGE 158
Unit Description, ACCU/DCCU 13.2.3 Dimensions and Weight Table 106 156 (421) Height 293.
PAGE 159
Unit Description, IDM 14 Unit Description, IDM This chapter describes the internal Distribution Module that distributes +24 V DC to all DC powered units in the RBS. Distribution circuits are protected by circuit breakers. The IDM consists of a unit with 21 circuit breakers, four PSU cables and connectors to the different DC powered units. 14.1 Functions The IDM has the following functions: 14.2 • Distributes power to all DC powered units. • Provides fused power distribution to the DC powered units.
PAGE 160
Unit Description, IDM Table 107 14.3 Connector Function P3 DC out P4 Climate unit P5 Fan 1 - 4 P6 TRU 1 P7 TRU 2 P8 CDU 1 P9 TRU 3 P10 TRU 4 P11 CDU 2 P12 TRU 5 P13 TRU 6 P14 CDU 3 P15 CXU 1 P16 CXU 2 P17 OXU 5 P18 DXU/System voltage sensor/OXU 1 - 4 P19 Test connector P20 Indicator Indicators and Buttons Located on the front panel are one green indicator and 21 circuit breakers. The function of the circuit breakers can be read on the front panel. Table 108 14.
PAGE 161
Unit Description, IDM Table 110 14.
PAGE 163
Broadcast 15 Broadcast "Broadcast" denotes the RBS resources used for transmission of Synchronisation Information and System Information.
PAGE 164
Broadcast • (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. 15.3.
PAGE 165
Broadcast Table 112 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 2 3 3 3 3 3 4 4 4 4 4 13 (3) 13 (3) 13 (3) 2ter, 13 5 2 2bis 2ter 2bis 6 3 3 3 3 7 4 4 4 4 Table 113 The BCCH Extended System Information schedule TC Type 2 17 3 8 0 13 6 16 7 7 The BCCH Extended blocks only exist if System Information 7, 8, 13, 16 and 17 are loaded.
PAGE 166
Broadcast 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.
PAGE 167
Broadcast Table 115 SACCH System Information schedule Stored System Information 5 * * 5bis Transmission Order 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.
PAGE 169
Common Control Channel Handling 16 Common Control Channel Handling "Common Control Channel Handling" denotes the RBS resources utilised for traffic on the Common Control channel. 16.1 References /GSM:04.08/ /GSM:08.58/ /GSM:05.02/ /GSM:05.03/ Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 16.2 Function 16.2.1 Paging By means of the PAGING procedure /GSM:08.58:5.
PAGE 170
Common Control Channel Handling 16.2.2 Immediate Assign By means of the IMMEDIATE ASSIGNMENT procedure / GSM:08.58:5.7./, the network signals acceptance or rejection of a CHANNEL_REQUEST message from MS.
PAGE 171
Common Control Channel Handling However, if more than one IA is sent in the same IMMEDIATE_ASSIGNMENT_EXTENDED message on air interface, the same number of IMMEDIATE_ASSIGNMENT_SENT messages should be sent on Abis. 16.2.4 CCCH Dequeuing and Transmission Downlink CCCH capacity is used for PAGING as well as for access grant (IMMEDIATE ASSIGN).
PAGE 172
Common Control Channel Handling • The CCCH queue system is used for system information 7, 8, 13, 16 and 17 for transmisstion on BCCH extended.
PAGE 173
Common Control Channel Handling Page mode extended makes it possible for the RBS to transmit pagings (IMSIs or TMSIs) or immediate assigns for a certain paging group when the next but one paging group is scheduled /GSM:04.08:3.3.2.1/. The "Page Mode" element (of the PAGING_REQUEST or IMMEDIATE_ASSIGNMENTs messages), set to extended Paging, is sent as an indication to the MS to be prepared to handle extended Paging as described above.
PAGE 174
Common Control Channel Handling Dummy Paging Whenever no PAGING_REQUEST or IMMEDIATE_ASSIGNMENT message is scheduled for transmission in a CCCH block, a Dummy Paging message is used. The message used for Dummy Paging is a PAGING_REQUEST type 1 /GSM:04.08:9.1.22./. Administration The following configuration parameters are used to control the transmission of PAGING_REQUEST messages and IMMEDIATE_ASSIGNMENT messages on downlink CCCH: Table 116 16.2.
PAGE 175
Common Control Channel Handling 50 ms are discarded. Stored messages are transferred in the same order as they arrive from MS. Emergency calls have precedence over temporarily stored messages. Each accepted CHANNEL_REQUEST is reported to BSC as a CHANNEL_REQUIRED message according to /GSM:08.58:8.5.3/. 16.3 Operational Conditions 16.3.
PAGE 177
Physical Channel Handling 17 Physical Channel Handling "Physical Channel Handling" covers the traffic services provided by the physical layer in the RBS for the air interface. 17.1 References /GSM:05.02/ /GSM:05.03/ Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 17.2 Functions 17.2.1 Supported Burst Types The following burst types are supported /GSM:05.02:5.2/: 17.2.
PAGE 178
Physical Channel Handling 17.2.3 SACCH/TH Slow Associated Control Channel, half rate traffic SCH Synchronization 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 TCH/FD Traffic Channel, full rate, uni-directional, multislot configuration. SACCH/M Slow Associated Control Channel, full rate traffic, multislot configuration.
PAGE 179
Physical Channel Handling − a) SDCCH/8[0..7] + SACCH/C8[0..7] − b) SDCCH/8[0,1,3..7] + SACCH/C8[0,1,3..7] + CBCH • (viii) TCH/F + FACCH/F + SACCH/M • (ix) TCH/F + SACCH/M • (x) TCH/FD + SACCH/MD 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.
PAGE 180
Physical Channel Handling /GSM:05.03:5/ 17.2.7 Packet Switched Channels De-interleaving De-interleaving (uplink) is performed according to: 17.2.8 /GSM:05.03:3/ Traffic Channels /GSM:05.03:4/ Control Channels /GSM:05.03:5/ Packet Switched Channels Burst Assembly Burst Assembly is performed according to: 17.2.9 /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.
PAGE 181
Speech and Data Services 18 Speech and Data Services This chapter covers speech and data services, as well as the handling of the link between the RBS and the RTC (Remote TransCoder) when neither speech nor data is present. 18.1 References /GSM:03.05/ GSM 03.05 Phase 2 Ver 4.0.0 /GSM:08.20/ GSM 08.20 Phase 2 Ver 4.1.0 /GSM:08.54/ GSM 08.54 Phase 2 Ver 4.0.0 /GSM:08.58/ GSM 08.58 Phase 2 Ver 4.2.0 /GSM:08.60/ GSM 08.60 Phase 2 Ver 4.1.0 /GSM:08.61/ GSM 08.61 Phase 2 Ver 4.1.0 /GSM:11.
PAGE 182
Speech and Data Services 18.3 Functions 18.3.
PAGE 183
Speech and Data Services Idle pattern is transmitted. When both 8 kbps subchannels of a common TS resource go into idle state they are transformed into one 16 kbps idle resource. Idle pattern is generated as specified in /GSM:08.54/. TLS on active subchannel is set On: • TCH in ACTIVE state including all sub-states and the channel mode is not "signalling". Terrestrial link used for traffic. Terrestrial link supervision is active.
PAGE 184
Speech and Data Services In order to activate coding/decoding of speech in the RTC, the RBS issues TRAU frames of type Speech/Enhanced speech. In order to deactivate speech coding/decoding in the RTC, the RBS issues TRAU frames of type Idle Speech. During the exchange of TRAU frames between RBS and RTC carrying Full Rate Speech (or Full Rate Idle Speech), the RBS regularly calculates an appropriate time alignment value for controlling the downlink frame timing.
PAGE 185
Speech and Data Services In order to deactivate speech coding/decoding in the RTC, the RBS issues TRAU frames of type Idle Pattern according to /GSM:08.61/. During the exchange of TRAU frames between RBS and RTC carrying half rate speech, the RBS regularly calculates an appropriate time alignment value for controlling the downlink frame timing. This value is included in the transmitted TRAU frames.
PAGE 186
Speech and Data Services The TRAU frames exchanged between RBS and RTC during an active call can be of the following types: • Data • Data, containing Idle Data The arrival of data blocks from the air interface is supervised by the RBS. If no data block is received, it is replaced by an idle data block. Half Rate Data is either terminated by the RF Channel Release function, or the Mode Modify function when Speech or Signalling services are requested. 18.4 Operational Conditions 18.4.
PAGE 187
Speech and Data Services 18.4.3 Half Rate Speech The round-trip delay for a half rate speech channel, introduced by the BTS, is less than 63 ms. The values are including additional delay due to the measuring method as described in /GSM 11.20:7.2.6, table 7–2b/. 18.4.4 Half Rate Data Transparent data services supported: • 4.8 kbits/s • 2.4 kbits/s • 1.2 kbits/s • 1200/75 bits/s • 600 bits/s Non-transparent data services supported: • 4.
PAGE 189
Packet Data Services 19 Packet Data Services This chapter covers packet data services, including handling of the link, GSL, between RBS and PCU, as well as Terrestrial Link Supervision (TLS) and Link Quality Supervision. 19.1 References /GSM:05.02/CCITT G.821/ CCITT Blue book, rec G.821 Vol III Fascicle III.5 "Digital Networks, digital sections and digital line systems" 19.2 Functions 19.2.
PAGE 190
Packet Data Services The RBS initiates the setup and synchronization of the GSL, by issuing PCU frames of type "synchronization". Upon reception of PCU frames of type "synchronization" by RBS, the GSL is established. Upon reception of an RF CHANNEL RELEASE from the BSC, Idle pattern is started to be transmitted to the PCU. The GSL is stopped and the RBS-PCU connection is released.
PAGE 191
Call Control 20 Call Control The Call Control function defines the RBS functions related to call establishment and call control on the air interface. 20.1 References /GSM 04.04/ /GSM 04.06/ /GSM 04.08/ /GSM 05.02/ /GSM 05.05/ /GSM 05.10/ /GSM 08.58/ Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 20.
PAGE 192
Call Control Note: All logical channels (except PTCCH) are transparent for the BTS. Supported channel numbers /GSM 08.58:9.3.1/ • Bm + ACCHs (Associated Control Channels) • Lm + ACCHs • SDCCH/8 + ACCH • SDCCH/4 + ACCH (TN=0) • PDCH Supported activation types /GSM 08.58:9.3.3/ • Immediate Assign • Normal Assign • Asynchronous Handover • Multislot configuration • Packet Channel • Initial activation Supported channel modes /GSM 08.58:9.3.
PAGE 193
Call Control EN/LZT 720 0008 2001-06-26 TCH/F2.4 Full rate data 600 bit/s transparent TCH/F2.4 Full rate data 1200/75 bit/s (1200 network >MS, 75 MS >network) transparent TCH/F Signalling, Bi-directional (not allowed on channel combination ix) TCH/FS Full rate speech, GSM speech alg. Ver 1, Bi-directional TCH/FS Full rate speech, GSM speech alg. Ver 2, Bi-directional TCH/F14.4 Full rate data 14.4 kbit/s non-transparent, Bi-directional TCH/F9.6 Full rate data 9.
PAGE 194
Call Control TCH/H4.8 Half rate data 4.8 kbit/s non-transparent, Uni-directional TCH/F9.6 Full rate data 9.6 kbit/s transparent, Uni-directional TCH/F4.8 Full rate data 4.8 kbit/s transparent, Uni-directional TCH/F2.4 Full rate data 2.4 kbit/s transparent, Uni-directional TCH/F2.4 Full rate data 1.2 kbit/s transparent, Uni-directional TCH/F2.4 Full rate data 600 bit/s transparent, Uni-directional TCH/F2.4 Full rate data 1200/75 bit/s transparent, Uni-directional TCH/H4.8 Half rate data 4.
PAGE 195
Call Control Timing Advance Required Normal Assignment /GSM 08.58:4.1/ The optional elements for Normal Assignment are: Encryption Information Optional Handover Reference Rejected Timing Advance Required SACCH Information Optional If the parameter SACCH Information is present, the contents will be used for this channel group instead of the information received in the SACCH FILLING INFORMATION MODIFY procedure described in Broadcast. Asynchronous Handover /GSM 08.58:4.
PAGE 196
Call Control • Set Dedicated Resource Channel state = Activate. Description In order to activate a channel between MS and RBS, the RBS receives an idle traffic channel from BSC in a Channel_Activation message. This message contains the reason for the activation (immediate assignment, normal assignment, asynchronous handover, multislot configuration), the identification of the channel to be used (channel no.
PAGE 197
Call Control later and later. The answer from the MS also arrives later and later at the RBS. This function prevents the delay becoming so long as to cause TS3 to overlap onto TS4, thus disturbing another call. The function is terminated when the dedicated Resource Channels enter state IDLE. There are three different kinds of Adaptive Frame Alignment: 1. Access Delay Measurement From the start of normal burst reception on a dedicated channel, the RBS measures the Access Delay on all received bursts.
PAGE 198
Call Control Physical_Information message to MS and the Handover_Detection message to BSC. /GSM 08.58:4.3/ MS RBS HANDO ACCESS BSC HANDO DET PHY INFO P003012A Figure 84 Physical information message There are some criterias that have to be fulfilled if the Handover Access messages shall be accepted.
PAGE 199
Call Control Example: 3. MS 1. 2. 3. OLD NEW BSC P003013A Figure 85 Transmission of physical information 1. BSC sends a message to the MS through the old RBS containing information about the frequency and time slot to change to. This information is sent over FACCH. 2. The MS tunes to the new frequency, and transmits handover access bursts in the correct time slot. The access bursts are small enough to be sent without any Timing Advance information and do not disturb any other call. 3.
PAGE 200
Call Control RBS BSC RF CHAN REL RF CHAN REL ACK P003014A Figure 86 20.6 RF channel release Deactivate SACCH Purpose To stop transmission on SACCH of the addressed channel group. Precondition and Initiation See Channel Activation above. The function is initiated when the RBS receives a Channel_Release message from BSC. Description The RBS immediately stops all transmission on SACCH of the addressed channel group. /GSM 08.58:4.6/ MS BSC RBS CHAN REL DEACT SACCH P003015A Figure 87 20.
PAGE 201
Call Control Precondition and Initiation Channel combination supported is defined in section Channel Activation above /GSM 04.06:5.4.4/. The Link Establish Indication function is applicable for: • SAPI-0 on SDCCH and FACCH • SAPI-3 on SDCCH and FACCH/T There are two cases of establishment as described in /GSM 04.06:5.4.1/: • Normal establishment • Contention resolution establishment The function is initiated when the RBS receives an SABM from MS.
PAGE 202
Call Control • 20.8 The link establishment procedure is in accordance with / GSM 08.58.3.1/ and /GSM 04.06:5.4.1/ Link Release Indication Purpose To release a link layer connection between MS and the network. Precondition and Initiation Channel combination supported is defined in section Channel Activation above.
PAGE 203
Call Control 20.9 Link Establishment Request Purpose To establish a signal link between MS and network. Precondition and Initiation Channel combinations supported are defined in section Channel Activation above. This function is applicable for: • SAPI-3 links on SDCCH, SACCH/T and SACCH/M The function is initiated when the RBS receives an ESTablish REQuest from BSC.
PAGE 204
Call Control Precondition and Initiation Channel combinations supported are defined in section Channel Activation above. This function is applicable for: • SAPI-3 links on SDCCH, SACCH/T and SACCH/M The function is initiated when a RELease REQuest is sent from BSC to RBS. Description The following procedure is used by BSC to request the release of a link layer connection on the air interface in multiframe mode / GSM 04.06:5.4.4/.
PAGE 205
Call Control Precondition and Initiation Channel combinations supported are defined in section Channel Activation above. This function is applicable for: • SAPI-0 on SDCCH and FACCH • SAPI-3 links on SDCCH, SACCH/T and SACCH/M The function is initiated when the RBS receives a DATA REQUEST from BSC. Description The following procedure is used by BSC to send a layer 3 message to MS in acknowledged mode /GSM 08.58:3.5/.
PAGE 206
Call Control Precondition and Initiation Channel combination supported is defined in section Channel Activation above. This function is applicable for: • SAPI-0 on SDCCH and FACCH • SAPI-3 links on SDCCH, SACCH/T and SACCH/M The function is initiated when the RBS receives an I-frame from MS. Description The following procedure is used when the MS sends a transparent layer 3 message to RBS. The message is forwarded to the BSC.
PAGE 207
Call Control This function is initiated when the RBS receives a SACCH INFO MODIFY from BSC. Description This procedure is used by the BSC to modify the SACCH filling information (System Information) sent on an individual SACCH channel. For this purpose, the RBS receives a SACCH INFO MODIFY message from BSC.
PAGE 208
Call Control SAPI-3 SAPI-3 is used for SMS point-to-point. The following channels are supported: SDCCH Acknowledged mode is supported. SACCH/T Acknowledged mode is supported. SACCH/M Unacknowledged mode is supported. Description LAPDm (Link Access Procedure on the Dm-channel) is a protocol that operates at the data link layer of the OSI structure. It receives service from the physical link (layer 1) and provides services to the net (layer 3).
PAGE 209
Call Control • SDCCH/8 + ACCH Supported reactivation types /GSM 08.58:9.3.3/ • Immediate Assign • Normal Assign • Asynchronous Handover Supported channel modes /GSM 08.58:9.3.6/ TCH/F Signalling TCH/H Signalling TCH/FS Full rate speech, GSM speech alg. Ver 1 TCH/FS Full rate speech, GSM speech alg. Ver 2 TCH/HS Half rate speech SDCCH Signalling For the non-transparent service TCH/F14.4 Full rate data 14.4 kbit/s non-transparent TCH/F9.6 Full rate data 9.
PAGE 210
Call Control 208 (421) TCH/F14.4 Full rate data 14.4 kbit/s non-transparent, Bi-directional TCH/F9.6 Full rate data 9.6 kbit/s non-transparent, Bi-directional TCH/H4.8 Half rate data 4.8 kbit/s non-transparent, Bi-directional TCH/F14.4 Full rate data 14.4 kbit/s transparent, Bi-directional TCH/F9.6 Full rate data 9.6 kbit/s transparent, Bi-directional TCH/F4.8 Full rate data 4.8 kbit/s transparent, Bi-directional TCH/F2.4 Full rate data 2.4 kbit/s transparent, Bi-directional TCH/F2.
PAGE 211
Call Control TCH/F2.4 Full rate data 1.2 kbit/s transparent, Uni-directional TCH/F2.4 Full rate data 600 bit/s transparent, Uni-directional TCH/F2.4 Full rate data 1200/75 bit/s transparent, Uni-directional TCH/H4.8 Half rate data 4.8 kbit/s non-transparent TCH/H4.8 Half rate data 4.8 kbit/s transparent TCH/H2.4 Half rate data 2.4 kbit/s transparent TCH/H2.4 Half rate data 1.2 kbit/s transparent TCH/H2.4 Half rate data 600 bit/s transparent TCH/H2.
PAGE 212
Call Control The reactivation for the multislot configuration procedure is in accordance with /GSM 08.58:4.1/. Encryption Information Optional Handover Reference Rejected Timing Advance Rejected SACCH Information Optional If the parameter SACCH Information is present, the contents will be used for this channel group instead of the information received in the SACCH FILLING INFORMATION MODIFY procedure described in Broadcast.
PAGE 213
Call Control Description By means of the POWER INFORMATION element, the transmission power of the RBS and the MS is immediately changed. It is an optional part of the DATA REQUEST message on Abis. /GSM 08.58:8.3.1/ The power information element contains the new power levels to be used by the RBS (BS Power Level) and the MS (MS Power Level) on the air interface. The RBS will immediately, without waiting for the next measurement period, change output power to BS Power Level.
PAGE 215
GPRS, Physical Link Layer 21 GPRS, Physical Link Layer General Packet Radio Services (GPRS) is a packet switched service. The service provides: 21.1 • Efficient use of scarce radio resources • Fast set-up/access time • Efficient transport of packets in the GSM network References /GSM:04.04/ /GSM:04.60/ /GSM:05.02/ /GSM:05.03/ /GSM:05.10/ /GSM:05.08/ Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 21.
PAGE 216
GPRS, Physical Link Layer Description The RBS receives a PCU Frame on Abis interface and checks for errors. The RLC/MAC Block and the control information channel mode, coding scheme and power level is extracted from the PCU frame. A radio block is created by encoding the RLC/MAC Block according to the given coding scheme /GSM:05.03:5/. The information of channel mode is stored to be applied on the next block uplink / GSM:05.02:6.3.2.2.1/.
PAGE 217
GPRS, Physical Link Layer Description The RBS receives four access bursts and performs demodulation according to the previously stored channel mode. Channel decoding is performed according to /GSM:05.03:5.3.1/. The RBS performs the following PDCH measurements produced per access burst by the decoder: • Burst quality • Frame quality • CRC • Access delay A PCU Frame is created, consisting of the four decoded access bursts and the PDCH measurements.
PAGE 219
Base Station Power Control 22 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. 22.1 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.
PAGE 220
Base Station Power Control • (v) FCCH+SCH+BCCH+CCCH+SDCCH/4(0..3)+SACCH/ C4(0..3) • (vii) SDCCH/8(0..7) + SACCH/C8(0..7) • (viii) TCH/F + FACCH/F + SACCH/M • (ix) TCH/F + SACCH/M • (x) TCH/FD + SACCH/MD The nominal power level is used if BS Power is not received at channel activation. The "BS Power" received is stored in the RBS to be used for the requested dedicated channel.
PAGE 221
Channel Measurements 23 Channel Measurements The RBS supports: 23.1 • Active Channel Measurements, that is quality and signal strength measurements on active uplink dedicated channels. • Idle Channel Measurements, that is signal strength measurements on idle uplink dedicated channels. References /GSM:08.58/ /GSM:05.08/ /GSM:05.02/ Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 23.
PAGE 222
Channel Measurements The RBS measures BER (Bit Error Rate) and the signal strength over each active channel per reporting period. All SACCH frames are included in the measurements. The reporting periods are different for different TNs, and for different channels, and are the same as for the MS, defined in /GSM 05.08:8.4/. The measurements of signal strength are referred to the RX reference point. An R.M.S. (Root Mean Square) value is created for each burst.
PAGE 223
Channel Measurements The measurements of signal strength are referred to the RX reference point. An R.M.S. value is formed for each timeslot. The logarithm of this value, expressed in dBm, is coded as defined for RXLEV in /GSM 05.08:8.1.4/. The average value is calculated from the RXLEV value, After Initiation, a first average value is calculated after two completed measurement periods. The second value is calculated when the first averaging period is completed.
PAGE 225
Discontinuous Transmission 24 Discontinuous Transmission "Discontinuous Transmission" is a mechanism which allows the radio transmitter to be switched off during speech or data (non-transparent) pauses. The following benefits are achieved: • Power is saved in the MS uplink • The overall interference level on the air is reduced • Reduced RBS power consumption downlink The RBS supports downlink DTX (Discontinuous Transmission) as well as uplink DTX. 24.1 References /GSM:04.06/ GSM 04.
PAGE 226
Discontinuous Transmission /GSM:06.42/ Voice Activity Detection (half rate speech) /GSM:06.81/ Overall DTX Operation (enhanced full rate speech) The downlink DTX function is supported for channel modes: • TCH speech, full rate (GSM speech alg. version 1), uni-directional • TCH speech, full rate (Speech full rate version 2), uni-directional • TCH speech, full rate (GSM speech alg.
PAGE 227
Discontinuous Transmission SID frames (including comfort noise parameters) are scheduled in TDMA frames according to /GSM:05:08:8.3/. When a SID frame is stolen for signalling (FACCH) purposes, the scheduling in TDMA frames will instead be according to /GSM:06.31:5.1.2/, / GSM:06.41:5.1.2/ or /GSM:06.81:5.1.2/.
PAGE 228
Discontinuous Transmission During periods of silence, RTH-SPEECH-IND with the silence indicator (SID) set to "3" are sent to the RTC in case when GSM speech alg. version 1 are used. If, during periods of silence, Speech full rate version 2 are used, RTH-SPEECH-IND frames are sent to the RTC with the BFI set. Half Rate During periods of silence, RTH-SPEECH-IND frames are sent to the RTC with the BFI set.
PAGE 229
Frequency Hopping 25 Frequency Hopping "Frequency hopping" means that the radio frequency channel of a BPC may change on a per TDMA frame basis. Frequency hopping improves the quality of the transmission on the air interface. The Frequency hopping function is used to increase the efficiency of the channel coding and interleaving in the following situations: • Multipath (or Rayleigh) fading − • Is often frequency-dependent. In case of a dip, changing of frequencies reduces this problem.
PAGE 230
Frequency Hopping Supported channel numbers are: • Bm + ACCH • Lm + ACCH • SDCCH/8 + ACCH This function is initiated when a CHANNEL_ACTIVATION message / GSM:08.58:8.4.1/ is received from the BSC. The information element Channel Identification as defined in / GSM:08.58:9.3.5/ is ignored. The BPC must have already been configured for frequency hopping by the BSC (OML link). All frequency hopping parameters are defined for each BPC at configuration, and cannot be changed at channel activation.
PAGE 231
Encryption 26 Encryption Encryption is used for ciphering and deciphering of information to and from an MS over a dedicated resource. The RBS supports two encryption modes, either using no encryption or using a GSM encryption algorithm. The BSC controls which encryption mode is used. There are two product variants with different encryption algorithms implemented: 26.1 • No encryption — GSM encryption algorithm version 1 (A5/1). • No encryption — GSM encryption algorithm version 2 (A5/2).
PAGE 232
Encryption This function is initiated during the set up of an encrypted channel between MS and RBS. The BSC controls initiation of encryption mode. Description To set up a dedicated logical channel, encryption mode has to be set. The RBS supports two encryption modes, "No encryption shall be used"and "encryption" (encrypted by a specific GSM encryption algorithm), see /GSM 08.58/.
PAGE 233
Encryption MS BTS BSC Encryption CMD Ciph Mode CMD RR (SDCCH) RR (SDCCH) Ciph Mode Com DI (Ciph Mode Com) P003010A Figure 95 26.4 Encryption Mode Change at Mode Modify Purpose This function is used to change the encryption mode (key and algorithm) on an active dedicated channel group. Preconditions and initiation Encryption is either activated or deactivated. The function is initiated when the RBS receives a MODE_MODIFY_COMMAD message from BSC.
PAGE 235
Mode Modify 27 Mode Modify The "Mode Modify" procedure is used by BSC to request a change of the channel mode (speech to data, data to speech, and so forth) of an active channel. 27.1 References /GSM 05.02/ GSM 05.02 (phase2) version 4.3.0 /GSM 08.58/ GSM 08.58 (phase2) 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. 27.2 Function By means of the MODE MODIFY procedure /GSM: 08.58:4.2.
PAGE 236
Mode Modify TCH/F2.4 Full rate data 600 bit/s transparent Any transition between the following full rate, multislot, Channel Modes is supported: 234 (421) TCH/F Signalling, Bi-directional (not allowed on channel combination ix) TCH/FS Full rate speech, GSM speech alg. ver 1 Bi-directional TCH/FS Full rate speech, GSM speech alg. ver 2 Bi-directional TCH/F14.4 NT Full rate data 14.4 kbit/s non-transparent, Bi-directional TCH/F9.6 NT Full rate data 9.
PAGE 237
Mode Modify TCH/F2.4 Full rate data 2.4 kbit/s transparent, Uni-directional TCH/F2.4 Full rate data 1.2 kbit/s transparent, Uni-directional TCH/F2.4 Full rate data 1200/75 bit/s transparent, Uni-directional TCH/F2.4 Full rate data 600 bit/s transparent, Uni-directional Any transition between the following half rate Channel Modes/ GSM:08.58:4.2/ is supported: TCH/H Signalling TCH/HS Half rate speech TCH/H4.8 Half rate data 4.8 kbit/s non-transparent TCH/H4.8 Half rate data 4.
PAGE 238
Mode Modify 27.3 Operational Conditions The maximum delay from reception of a MODE_MODIFY command until the command is acknowledged (MODE_MODIFY_ACKNOWLEDGEMENT or MODE_MODIFY_NEGATIVE_ACKNOWLEDGEMENT) is 25 ms.
PAGE 239
Mobile Station Power Control 28 Mobile Station Power Control By means of the "MS Power Control" procedure /GSM:08.58:- 4.8/, BSC gives RBS the power level to be used by MS, on a dedicated resource. MS power control is employed to minimise the transmit power required by the MS while maintaining the quality of the radio links. By minimising the transmit power levels, interference to co-channel users is reduced.
PAGE 240
Mobile Station Power Control • Order MS to set the commanded power level Description The function is initiated when a CHANNEL_ACTIVATION message / GSM:08.58:8.4.1/ containing MS Power is received from the BSC. The value of the ordered MS power /GSM:08.58:9.3.13/ is passed transparently to the MS. RBS stores the MS power level received from BSC and includes it in the L1 header of all downlink SACCH blocks /GSM:04.04:7.1/. 28.2.
PAGE 241
Short Message Service 29 Short Message Service SMS P-P (Short Message Service Point-to-Point) provides a means of sending messages of limited size to and from a mobile. SMSCB (Short Message Service Cell Broadcast) is a service in which short messages may be broadcast to all mobiles in a cell.
PAGE 242
Short Message Service • (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) • (viii) TCH/F + FACCH/F + SACCH/M The SMS P-P MT function is initiated when an ESTABLISH REQUEST message for a SAPI-3 link is received from the BSC. SMS P-P MT messages are transmitted as transparent L3 (Layer 3) messages (in acknowledged mode), on a SAPI-3 link between the network and the MSs.
PAGE 243
Short Message Service RBS Actions: • Interpretation of SMS_BROADCAST_REQUEST messages • Transmission of SMSCB messages • Transmission of CBCH Fill-frame Description Configuration parameter CBCH Ind must be set to 1, to indicate the usage of SDCCH sub-channel 2, for SMSCB messages. Transmission of SMSCB messages on channel combination (vii) requires that configuration parameter BS_AG_BLKS_RES is set to a value greater than zero, /GSM:05.02:6.5.4/ /GSM:05.02:3.3.2.3/.
PAGE 245
Diversity Supervision 30 Diversity Supervision The "Diversity Supervision" function supervises the signal strength imbalance between the two diversity channels in an RBS with receiver diversity. The function is capable of detecting major faults in the radio receiver paths or the receiver antenna system. 30.1 References /GSM:05.08/ GSM Requirements 05.08 Phase 2 version 4.6.
PAGE 246
Diversity Supervision 30.3 Signal Strength Imbalance The SSI (Signal Strength Imbalance) is defined here as the mean difference (in decibels) between the receiver’s two diversity channels.
PAGE 247
Diversity Supervision 30.4 Operational Conditions The diversity supervision is characterised by a number of parameters which are implemented as software constants.
PAGE 249
Synchronization 31 Synchronization The purpose of this function is to synchronize an RBS internally. The function is needed to achieve air timeslot synchronization, according to /GSM:05.10/ and /JTC PCS:7/. The transition between different states and functions can be seen in the figure below. Startup Free running clock Establishing sync. state Selection of ref. source Locking to ref.source Sync. established Hold over time expired Hold over state Hold over operation Supervision of ref.
PAGE 250
Synchronization In this mode the RBS uses an incoming PCM-reference or the optional reference as synchronization reference. The RBS is not synchronized with any other RBS. • Master In this mode the RBS uses an incoming PCM-reference or the optional reference as synchronization reference. The generated timing is also distributed to other RBSes in the RBS cluster via the ESB. • Slave In this mode the RBS uses another RBS as synchronization reference.
PAGE 251
Synchronization Synchronizing The process of maintaining a phase lock to the reference Internal Source An internal short-term stable oscillator Optional Reference An optional frequency reference source built into the RBS PCM-reference A frequency reference extracted from the PCM-network External Synchronization Bus (ESB) A bus for distribution of synchronization information between RBSes in an RBS cluster RBS cluster 31.
PAGE 252
Synchronization Cold start Transmission network or other RBS as source 5 minutes Optional frequency source 10 minutes For both network and optional 31.4 RBS is synchronized Transmission network, Optional and Reset command frequency source or other RBS as received on ABIS source 10 seconds RBS is synchronized Transmission network, Optional and Start command frequency source or other RBS as after Function source Change is received 30 seconds Warm start 90 s when there is not jitter in the synch.
PAGE 253
Synchronization Table 120 TF Config. Parameters Selected Synch. Source Type TF Mode TF Synch. Source Type Optional Synch. HW No Optional Synch. HW Not defined Not defined Optional PCM Master/ Stand-alone Not defined Optional PCM PCM PCM PCM Internal Optional PCM Does not care Other RBS Other RBS Slave 1) 1) Rejected by the Capability Conformance Check function.
PAGE 254
Synchronization the lack of reference source. This fault actually implies for an ITU-T G.703 2048 kbit/s system that the reference on both PCM-A and PCMB is not usable. If the RBS has not regained its synchronization either by re-establishment or reselection within 60 minutes (when TF mode is master and stand-alone) and within 15 minutes (when TF mode is slave), it is reported to the BSC which orders the RBS to disable all radio transmission.
PAGE 255
Synchronization The outcome of this continuous supervision of the reference is either that the reference is usable or not. The function terminates when "Hold-over expired time" ends in "Hold-over state". 31.7 Locking to the Reference Source Purpose The function supervises the locking process and limits the time for locking to the reference source. Precondition and Initiation The function is initiated when a locking attempt to a reference source is made.
PAGE 256
Synchronization 31.8 FN-Offset Purpose The purpose is to improve handover performance. If one RBS is configured for several cells and handover is done between two cells controlled by the same RBS, the handover execution time will be longer if the two cells are synchronized together. Precondition and Initiation The function is initiated by a request from the BSC.
PAGE 257
Synchronization Description The timing difference between different carriers within a cell shall be less than 1/4 bit in the air (920 ns). To fulfil this requirement the following delays must be compensated for: • the distribution delay on the external synchronization bus • the transmitter chain delay (delays in transmitter, combiner, feeder and antenna) The BSC/OSS operator defines one RBS in the RBS cluster to master and the others to slave(s).
PAGE 259
Radio Reception 32 Radio Reception Radio reception defines the function to receive an RF signal from the air interface and restore the bit stream. Diversity is used to improve the sensitivity on the receiver. It is achieved by having two antennas, and by that means take advantage of two or more receiver paths. 32.1 References For GSM 900 and GSM 1800: /GSM 05.04/ GSM Requirements 05.04 Phase 2 /GSM 05.05/ GSM Requirements 05.
PAGE 260
Radio Reception Precondition and initiation The Air Time Slot Resources (ATSR) must be configured for diversity. The diversity initiates when the ATSR is taken into traffic. Description Antenna A Antenna B RXA RXB Receiver 03_0466A Figure 98 Diversity One way to improve your performance on received signal is by using diversity. This can be achieved by using two reception channels that are independently influenced by fading. Both of the two insignals from the antennas are combined in the receiver.
PAGE 261
Radio Transmission 33 Radio Transmission Radio transmission denotes the function to "Generate a Radio Frequency (RF) signal". 33.1 References GSM 900 and GSM 1800 /GSM:05.02/ GSM Requirements 05.02 Phase 2 version 4.6.0 /GSM:05.04/ GSM Requirements 05.04 Phase 2 version 3.1.2 /GSM:05.05/ GSM Requirements 05.05 Phase 2 version 4.13.0 /GSM:05.08/ GSM Requirements 05.08 Phase 2 version 4.6.0 /GSM:05.10/ GSM Requirements 05.10 Phase 2 version 4.2.0 GSM 1900 /GSM:05.02/ GSM Requirements 05.
PAGE 262
Radio Transmission 33.2 Concepts Base Transceiver Station (BTS), defined in the chapter "Radio Configuration, RBS 2000 Macro". Radio Base Station (RBS), defined in the chapter the "Radio Configuration, RBS 2000 Macro". Combining system and filtering is the interface between transmitters and the antenna system.
PAGE 263
Radio Transmission RBS TX Combining system + filtering TX . . Feeder Antenna mounted equipment X TX X = TX reference point 02_0467A Figure 100 33.3 TX reference point X with antenna mounted equipment Functions Radio transmission Radio transmission denotes the function to "Generate an RF signal" from the bit stream that constitutes a burst. The transmitter uses the modulation format specified in /GSM:05.04/ for GSM 900 and GSM 1800 and /JTC:4/ for GSM 1900.
PAGE 264
Radio Transmission SW Power Boost In order to improve downlink performance, a BTS, without Filter Combiner,can be configured for TX diversity. Note: Only the following macro configurations are supported: RBS 2101, RBS 2102 and RBS 2202 with configurations 1x2, 2x2, 3x2, CDU-A for 900 MHz, CDU-A with TMA for 1800 MHz and 1900 MHz. Two transmitters connected to different antennas are then transmitting with maximum power on the same frequency.
PAGE 265
Radio Transmission Dynamic power reduction The transmitter can control the output power as defined by the base station power control function. Frequency hopping The transmitter is capable of frequency hopping as defined by the frequency hopping function.
PAGE 267
Frequency Allocation Support 34 Frequency Allocation Support The FAS function measures the interference level on a number of frequencies, specified by the operator. The measurements are performed on idle channels or idle burst positions. The TRXC:s execute the FAS function independently of each other (however all TRXC:s don’t have to be used). Thus it is here described only how the FAS function works on one TRXC. FAS measurements can start when the TRXC has been configured with a list of FAS frequencies.
PAGE 268
Frequency Allocation Support 34.3.3 Stop measurement FAS measurement will be stopped either by directed O&M message, or by receiving a new configuration. 34.3.4 FAS measurement The FAS measurements are performed according to the following: 34.3.5 4. A FAS measurement is done every 15:th second. During that FAS measurement interval the signal strength of each frequency in the frequency list is measured once. 5.
PAGE 269
Frequency Allocation Support measurements equals zero, the median and percentile signal strength values are reported as zero. 34.4 Operational Conditions At least one timeslot on TCH must be enabled. Measurements can only be performed on enabled timeslots configured as TCH/F or TCH/H. The RX must also be enabled.
PAGE 271
Restart and Recovery 35 Restart and Recovery The "Restart and Recovery" function allows the RBS or a specific Replaceable Unit, RU, (see Section Concepts below) to be started or restarted in a controlled manner. Restart occurs with installation, repair or reset.
PAGE 272
Restart and Recovery CMRU Central Main Replaceable Unit An RBS has one CMRU. DMRU Distributed Main Replaceable Unit A Main RU is distributed if it is subordinated to the CMRU. 35.3 Function 35.3.1 Purpose The entire RBS is brought into operation in a controlled manner. The sequence of events is given below. 35.3.
PAGE 273
Restart and Recovery 24 bring DMRU into remote operation Start processor: • If the checksum for the updated application software is correct, the updated application is chosen as application software. • If the RU is a DMRU without non-volatile memory, the DMRU must retrieve software from the CMRU. • If database parameters are not useable, are inaccessible or out of range, default values are used instead.
PAGE 275
Function Change 36 Function Change The purpose of "Function Change" is to facilitate the reload, change or upgrade of the RBS software and the subsequent activation of that software. The software is downloaded from the BSC to the RBS via the A-bis interface. Function change incorporates the following features: • Rapid initial start − • Rapid restart − • EN/LZT 720 0008 2001-06-26 Software is distributed internally within the RBS.
PAGE 276
Function Change 36.2 DMRU Distributed Main Replaceble Unit. A Main RU is said to be distributed if it is subordinated to the CMRU. Main RU Contains one or more processors, to which software can be downloaded from the BSC. A Main RU is either central or distributed, see above. A Main RU may or may not have a direct signalling link to the BSC. RU Replaceble Unit. An RU is the smallest unit that can be handled on site or in a repair center and of which information can be retrieved via OMT or BSC.
PAGE 277
Function Change function change if the normal application software is valid, thus there is always one application software available. If the normal application is corrupt (or unavailable), the base application software is automatically selected instead. 36.2.2 Software File Relation Each Main RU visible via the A-bis interface is offered every software file within the appropriate file package.
PAGE 278
Function Change At switch-over to the new software, traffic is affected. This implies a restart as in chapter Restart and Recovery followed by configuration and enabling as specified in chapter Functionality Administration. At start-up (in START_CF_CMD), negotiation will take place between BTS and BSC. The BTS sends a NEGOTIATION REQUEST message to the BSC including a list of valid IWDs supported by the BTS.
PAGE 279
Functionality Administration 37 Functionality Administration "Functionality Administration" provides the functionality necessary to allow the BSC to configure, enable and disable AOs within the RBS. This function also includes general layer 3 A-bis OML support for other functions within the RBS. 37.1 References Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 37.
PAGE 280
Functionality Administration DP Digital Path IS Interface Switch TF Timing Functions AO Application Object CON LAPD Sign. Conc. TS Time Slot handler TX Radio frequency Transmitter RX Radio frequency Receiver MO Managed Object TRXC Transceiver Controller SO Service Object CF Central Functions 01_0286B Figure 102 Managed Object classification 37.3 Functions 37.3.
PAGE 281
Functionality Administration • Configuration • Enable • Disable Configuration The process of setting the desired configuration parameters for an AO. For most AOs and most configuration parameters this process must be performed while the AO is disabled. However there are a number of exceptions, certain parameters on certain AOs may be configured by the BSC while the AO is enabled.
PAGE 282
Functionality Administration The BSC is informed of the successful disable of the AO or, if unsuccessful, an indication of why the disable was unsuccessful is returned. 37.3.3 A-bis OML Support Layer 3 downlink Elementary Procedures Downlink EPs are those EPs initiated by the BSC.
PAGE 283
Functionality Administration After a timeout the message is retransmitted. A maximum of 2 retransmissions are performed. After 3 timeouts (including 2 retransmissions) Layer 3 supervision is terminated. 37.4 Operational Conditions 37.4.1 Operation and Maintenance The visual indicators relevant to Functionality Administration are described within the context of Operation and Maintenance Support.
PAGE 285
Operation and Maintenance Support 38 Operation and Maintenance Support Operation and Maintenance Support defines RBS functions related to: 38.1 • Buttons • Visual indicators • Change from Local to Remote Mode and vice versa • Loop Control • RF Loop Test Supervision • Calender Time • RSSI Temperature Compensation • Max Cooling References Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 38.
PAGE 286
Operation and Maintenance Support configured and enabled to fulfil its purpose. 284 (421) Local Configuration When a RU reads necessary information from its database and a signal is sent when it is ready. Main RU Contains one or more processors, to which SW can be downloaded from the BSC. A main RU is either central or distributed. A main RU may or may not have a direct signalling link to the BSC. Master Cabinet In a multiple cabinet configuration, the Master Cabinet is the cabinet with the SO CF.
PAGE 287
Operation and Maintenance Support sub-RU does not normally have a processor. It should be observed that a RU with a processor that is not loadable is classified as a sub-RU. TDMRU 38.3 Transceiver DMRU. A TDMRU is a DMRU that handles transceiver functionality. Buttons Purpose To be able to reset, to start test operation function and to change between local and remote mode. Preconditions For the CPU Reset-button and the Test-button there are no precondition requirements.
PAGE 288
Operation and Maintenance Support Description The Local Mode Indicator starts flashing to indicate that a change of RU mode is in progress. The Operational indicator is turned off if applicable, see Section 38.15 Operational Indicator on page 292 and the Local/Remote button is disabled. The subfunction Local Mode in Progress is performed, seeSection 38.24 Local Mode in Progress on page 299. After this the Local Mode indicator is turned on, the Operational Indicator is handled see Section 38.
PAGE 289
Operation and Maintenance Support The RU mode is changed to Remote immediately after the link towards the BSC is established. The external condition class 1, called switch information, is ceased. The ceased external condition is not reported to the BSC. When the RU has entered Remote Mode the function terminates and the Local Mode indicator is turned off. 38.6 Change RU to Remote Mode Cancel Purpose To cancel a change to Remote Mode when a change of RU mode from Local to Remote is in progress.
PAGE 290
Operation and Maintenance Support Local/Remote button is disabled. When RU mode is changed to local for the slave RU, a TX diversity fault is raised on the master AO TX. A FAULT_REPORT message is sent to BSC on Abis interface. RU mode is changed to local and Abis communication with BSC via the master RU is stopped. When Local Mode has been entered, the slave MO TX is disabled if it was enabled, and the TX NOT ENABLED indicator is turned on.
PAGE 291
Operation and Maintenance Support The supervision parameters are defined by the IDB or the OMT. The supervision parameters define supervision status (active/inactive) and test interval. Each parameter has a default value. When the test loop is activated the test is continuously repeated with the defined test interval. The supervision is terminated at deactivation from the Operation and Maintenance Terminal. Detected faults at RF Loop Test are handled by the Diagnostics and Fault handling functionality.
PAGE 292
Operation and Maintenance Support will be measured continuously. The temperature level is then used for update of the RSSI temperature compensation value. The RSSI compensation value will not be updated more frequently than every 10th second. 38.12 Max Cooling Purpose To control the fans to make them perform their maximum available cooling when certain supervised values have reached certain levels. Preconditions and Initiation Applicable for any operational state.
PAGE 293
Operation and Maintenance Support • At a Max Cooling state change. • After an EDMRU (ECU) reset. The Max Cooling state will not be updated more frequently than every 30th second. If Max Cooling fails the fault is logged but no further action taken within the scope of this function. 38.13 Fault Indicator Purpose To indicate if there are any faults in the RU the indicator is located on. Preconditions and Initiation Applicable for any operational condition.
PAGE 294
Operation and Maintenance Support 38.14 BS Fault Indicator Purpose To indicate if there are any faults in the RBS. Preconditions and Initiation Applicable for any operational condition. The function is initiated when the SW is started. Description The BS Fault indicator is controlled from the Diagnostics and Fault Handling functionality and from the Restart and Recovery functionality. When the RU is reset in any way the handling of the indicator is terminated.
PAGE 295
Operation and Maintenance Support Description The Operational indicator is controlled from the Diagnostics and Fault handling functionality, Restart and Recovery functionality and Function Change Functionality. The indicator is turned off 2-10 seconds after the SW has started. When the RU is reset in any way the handling of the indicator is terminated.
PAGE 296
Operation and Maintenance Support Table 121 Operational States RU in Remote Mode RU in Local Mode The state of the operational indicator on CMRU and TDMRU is determined upon the operational mode of the MOs associated to the RU. The operational indicator on the EDMRU is only controlled locally and is described by the Diagnostics and Fault Handling Functionality.
PAGE 297
Operation and Maintenance Support Preconditions and Initiation Applicable for any operational condition. The function is initiated when the SW is started. Description The TX Not Enabled indicator is controlled from Functionality Administration functionality and from Restart and Recovery functionality. The TX Not Enabled indicator is on until the BSC has changed MO State for TX to enabled. When the TX is disabled or reset by the BSC or auto-disabled by the RBS the indicator is turned on.
PAGE 298
Operation and Maintenance Support − For a TDMRU that is configured to implement a slave TX in a SW Power Boost configuration: The RU is remote via the TDMRU that implements the master TX. For description of changing an RU to Local Mode, see Section 38.4 Change RU to Local Mode on page 285. Limitations: The Local Mode indicator will not indicate when the layer 2 A-bis communication with the BSC is lost when the RU Mode is Remote. 38.
PAGE 299
Operation and Maintenance Support Preconditions and Initiation Applicable for any operational condition. The function is initiated by the HW when the RU is started. Description The DC Disconnect indicator indicates if the DC is working properly or not. If the environmental requirements are not fulfilled, the power to the rest of the RBS is switched off. The DC Disconnect indicator is controlled from the Climate protection functionality and from Restart and Recovery functionality.
PAGE 300
Operation and Maintenance Support 38.21 Bat Disconnected Indicator Purpose To indicate if the battery is disconnected. Preconditions and Initiation Applicable for any operational condition. The function is initiated by the HW when the RU is started. Description The Bat Disconnected indicator indicates if the battery is connected or not. The Bat Disconnect indicator is controlled from Power Supply functionality and from Restart and Recovery functionality.
PAGE 301
Operation and Maintenance Support 38.24 Local Mode in Progress Local Mode in Progress is a subfunction. Purpose To change RU mode from Remote to Local. Preconditions and Initiation The RU mode should be "Change to Local Mode in progress". The subfunction will be initiated when a change of RU mode to Local mode has been initiated. Description An external condition class 1, called switch information, is raised on the RU.
PAGE 303
Installation Data Handling 39 Installation Data Handling Information about specific areas regarding either the RBS as a whole or each of the Replaceable Units, RUs, is stored in a database in the RBS. The purpose of the database is to handle information and provide efficient help within the following areas: • General operation and maintenance • Fault diagnostics • Fault localisation • Traceability The database mainly contains configuration data valid for the RBS as a whole and for individual RUs.
PAGE 304
Installation Data Handling 39.4.1 Elements Found in the RBS Database RBS External Alarms Specifies the alarm identity, alarm data, alarm severity and alarm criterion for each external alarm. Access: BSC via the Abis interface (in fault reports and hardware information) Operator via the OMT RBS ARAE Supervision Specifies the affected functionality, fault class and antenna instance number of each auxiliary fault.
PAGE 305
Installation Data Handling RU Physical Position Identifies the location of the RU at a site, including information about cabinet, rack, shelf and slot. Access: BSC via the Abis interface (in fault reports and hardware information) Operator via the OMT 39.4.3 Elements Found in the RU Database RU Specific Includes the parameters specific to an RU. These parameters are dependent on the hardware design. 39.
PAGE 307
Self Test and Supervision 40 Self Test and Supervision Self Test comprises an initial boot test and X-bus receiver test. The initial boot test is performed during the start-up of an RU, in order to test the functionality of the hardware required for the execution of the application software. The X-bus receiver test is performed at TX configuration if TX is configured for SW Power Boost, in order to test the X-bus receiver on the master TX and slave TX.
PAGE 308
Self Test and Supervision The Boot Test returns a state that indicates failure or success. However, the test will terminate permanently if a Read/Write-memory failure is detected. This causes a reset of the processor. The function can be upgraded remotely by replacing parts of the boot software. 40.3.2 X-Bus Receiver Test Purpose To detect any faults on the X-Bus before the SW Power Boost is started.
PAGE 309
Self Test and Supervision 40.4.1 Supervision of Buses Purpose The purpose of this function is to check the integrity of the data on the buses. Preconditions and Initiation The function is automatically initiated at the start of the functions driving and receiving information on the buses. Description Receive and transmit bus supervision encompasses buses between three or more RUs or major functional blocks. The address or data buses of the processors are not supervised by this specific function.
PAGE 310
Self Test and Supervision 40.4.3 Supervision of Application Program Purpose Supervises the application software. If the execution of the software fails (for example a cyclic loop) the function exception processing interrupts the execution. Preconditions and Initiation Initiates automatically at start of application software. Description The main processor supervises the operation of the sub-processors by the regular reception of signals from the sub-processors.
PAGE 311
Self Test and Supervision 40.4.5 Radio Transmission and Reception Purpose The transceiver is tested during traffic by a radio test loop function. The purpose is to detect a faulty transceiver by detecting an error in the signal strength or in the number of bit errors. Preconditions and Initiation The test requires two unused ATSR (AirTime Slot Resources) separated by three timeslots.
PAGE 312
Self Test and Supervision Preconditions and Initiation Initiates when the signalling multiplexing application is started in the CMRU and when the corresponding application handling the signalling endpoints on the DMRUs, are started. Description The relation between the reflected power and the output power can be described by the voltage standing wave ratio (VSWR). The more reflection the higher value of the VSWR.
PAGE 313
Self Test and Supervision Aborted frames are those frames ended by an abort flag sequence. Erroneous frames have the following conditions: • A CRC-error (Cyclic Redundancy Code, CRC-16). • Frames shorter than 4 bytes. • Frames longer than the maximum frame length (260 bytes). • Not ended on byte boundary. • Data loss caused by lack of buffers or memory access problems.
PAGE 314
Self Test and Supervision Preconditions and Initiation Initiates automatically at application software start. Description All BTS have inbuilt fans, which may run at four different speeds full, middle, low and stop. The main task of the fans is to circulate the air in the BTS and replace old, warm air with new, cooler air. The RBS 2102 and 2101 has a climate system with a control unit that controls the temperature and the humidity of the RBS.
PAGE 315
Self Test and Supervision 40.4.12 Synchronization Sources Purpose Supervise the ability of the transmitter and the receiver to lock to the reference frequency. Preconditions and Initiation Initiated when the application software is started. The faults associated are installed in the fault handling function at initiation. Description Frequency generators of the transmitter and receiver are supervised for adequate locking to the reference frequency. Failure to lock within time generates a disturbance.
PAGE 316
Self Test and Supervision minutes after the fault has been deactivated (that is to say the door has been closed) for the fault message to cease. The fault is reported as External Condition Fault. This function is valid for the outdoor cabinets only.
PAGE 317
Diagnostics and Fault Handling 41 Diagnostics and Fault Handling "Diagnostics and Fault Handling" supervises the handling of faults and disturbances detected by the "Selftest and Supervision" function. Fault handling performs the following: 41.1 • Filters spurious disturbances.
PAGE 318
Diagnostics and Fault Handling Interface. The RBS equipment is seen as a set of MOs by the BSC. (This is a way of describing the RBS in a functionaloriented way. A logical model of the RBS in terms of MOs is built in the BSC). All O&M actions are based on this logical model structure created in the BSC. An MO does not necessarily have a oneto-one relation with a physical unit in the RBS and the MO comprises either both hardware and software or software only. 41.3 RU Replaceable Unit.
PAGE 319
Diagnostics and Fault Handling 41.3.1 Fault Filtering Purpose The purpose of the subfunction is to determine whether a fault is present or absent, see figure below, and the nature of the fault. Fault filter Disturbance/ Measurement Fault filter parameters Fault present/ Fault absent P002833A Figure 103 Fault Filter Preconditions and initiation The selftest and supervision function has detected a disturbance.
PAGE 320
Diagnostics and Fault Handling 41.3.2 Fault Evaluation Purpose Detected faults are evaluated to determine the underlying fault. Preconditions and initiation A change in fault status for HWU or a RU. Description This function evaluates the input fault maps and tries to find out the actual fault cause. This is done by analyzing faults reported on a low level (specified hardware units) and mapping them to a high level (RUs and MOs), thus taking the complete fault situation into account. 41.3.
PAGE 321
Diagnostics and Fault Handling Description When detecting a fault, the RBS automatically evaluates the fault situation and indicates the suspected faulty RU. The fault status of the RBS is updated with this information. When a fault is pin-pointed to a specific RU this is visually indicated as specified within the context of Operation and Maintenance Support. 41.5 Local Action Purpose When a fault is detected for a SE it may be necessary to minimize the effect of the fault. It is called a local action.
PAGE 322
Diagnostics and Fault Handling Preconditions and initiation The fault detection function and the fault localization function reports new fault status for a MO. Both functions must have been completed before start of this function. Description The RBSs automatically informs the BSC of each change in the fault status. The old fault status is compared with the new fault status. If the fault status has changed for MO, a fault report procedure is initiated on A-bis.
PAGE 323
Operation and Maintenance Terminal 42 Operation and Maintenance Terminal The OMT is a tool that provides efficient aid for installation, site acceptance, diagnostics and maintenance of RBSs within the RBS 2000 series. 42.1 References /G.703/ /G.704/ /GSM:11.20/ /GSM:05.05/ Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 42.
PAGE 324
Operation and Maintenance Terminal DMRU Distributed Main Replaceble Unit. A Main RU is said to be distributed if it is subordinated to the CMRU. Main RU Contains one or more processors, to which software can be downloaded from the BSC. A Main RU is either central or distributed, see above. A Main RU may or may not have a direct signalling link to the BSC. Passive RU A passive RU is an RU with a very low level of intelligence.
PAGE 325
Operation and Maintenance Terminal Configurations possible to display, comprise all RBS 2000 products and the configurations as specified for each product. The following RU and connections are graphically displayed: − DXU − TRU − ECU − CDU − Local bus − CDU bus − Number of antenna systems (1 or 3) • Display RBS software revisions, display RU software revisions for all Main RUs, see Section 42.3.16 Replaceable Unit on page 329.
PAGE 326
Operation and Maintenance Terminal Read Copy the IDB from the RBS to the OMT. Install Install the IDB from the RBS to the OMT. Cable mounting list Display a cable mounting list based upon information from the IDB. Site specific data Site specific data , that is IDB information that is changeable from the OMT, is displayed, copied to any file medium to the IDB in the OMT. Save Copy the IDB from the OMT to any file medium, for example a floppy disk or a hard disk.
PAGE 327
Operation and Maintenance Terminal 42.3.6 ARAE Supervision Parameters The following user functions, related to the ARAE, are available in the OMT: • Auxiliary Faults are possible to define for each alarm inlet. • The alarm inlets can be used for both External Alarms and for ARAE Supervision. • The definition of the ARAE Supervision Parameters is displayed. • Monitor ARAE fault status. The output can be displayed or directed to file (output stored in a file on the OMT). 42.3.
PAGE 328
Operation and Maintenance Terminal − Current Supervision Limit Low − Current Supervision Limit High It is possible to define values for the following parameters only in OMT state LOCAL: – RX Group Delay – Loss – RX Frequency Range • − RX Frequency Low − RX Frequency High Display ALNA/TMA parameters, displays any of the following parameters associated with ALNA/TMA: – Current Supervision Limits − Current Supervision Limit Low − Current Supervision Limit High – RX Group Delay – Loss – RX Freque
PAGE 329
Operation and Maintenance Terminal This function makes it possible for the operator to define (or redefine) the IDB parameter RBS TF Compensation Value. • Display TF Compensation Value The IDB parameter RBS TF Compensation Value (in ns) is displayed. The following user functions, related to the /G. 703/ 2048 kbit/s PCM network, are available in the OMT: • Display spare bits, display spare bits in timeslot 0 on G.703, values (0 or 1) for bits Sa4-Sa8.
PAGE 330
Operation and Maintenance Terminal Exception: A DXU which uses the PRACT transmission circuit does not support the LBO values. • Modify FDL use values for transmission interface. Sets the individual Facility Data Link (FDL) use values for a T1 transmission interface. The values are defined and referred as parameter "FDL_use" in the IDB. Exception: A DXU which uses the PRACT transmission circuit does not support the FDL_use. • Display FDL use values for transmission interface.
PAGE 331
Operation and Maintenance Terminal • Switch on Measurement Reports, switch on Measurement Reports for one or several time slots. • Switch off Measurement Reports, switch off Measurement Reports for one or several time slots. The functions above are normally used during 42.3.
PAGE 332
Operation and Maintenance Terminal • − Currently executing software − Base application software stored in non-volatile memory − Normal application software in non-volatile memory Define RU, define the following parameter associated with the CMRU − TEI The functions above are normally used for 42.3.
PAGE 333
External Alarms 43 External Alarms 43.1 References Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 43.2 Concepts External Alarm An alarm that originates from a source defined by the customer. The alarm is reported over A-bis transparently through the RBS. An example is a fire alarm. Auxiliary Faults Detected by supervision of auxiliary equipment.
PAGE 334
External Alarms Preconditions and initiation The external alarms function is started by the restart and recovery function. Description The following parameters are associated with each supervised external alarm: Inlet Number 1–16. Defines which inlet the external alarm source equipment is connected to. Inlet Usage "Auxiliary Fault", "External Alarm" or "Not Defined". The default alarm setup is that alarm inlets are "Not Defined".
PAGE 335
External Alarms Capabilities The Capabilities of the different Radio Base Stations are shown in the table below: Table 123 Maximum Number of external alarms defined by the customer Radio Base Station External Alarm, maximum RBS 2101 8 RBS 2102 16 RBS 2103 16 RBS 2202 16 RBS 2302 8 (1) (1) In case of three cascaded RBS 2302, thew maximum number of External Alarms is 16.
PAGE 337
Handling of Auxiliary Equipment 44 Handling of Auxiliary Equipment A number of customer defined, antenna related auxiliary equipment can be supervised by the RBS. The raising of an auxiliary fault is, after analysis in the RBS, reported to the BSC. Depending on what severity the operator has defined for the fault, the concerned MO could be taken out of operation. 44.
PAGE 338
Climate Protection Fault class There are two possible severity classifications Antenna instance number Defines the physical antenna Each of these parameters is initially defined manually on RBS installation, using an OMT. Subsequently any of these parameters may be modified using an OMT. The RBS supervises each configuration auxiliary fault. An auxiliary fault is filtered, that is, must remain in a new state a fixed period of time (approximately 3 seconds) before the BSC is notified.
PAGE 339
Climate Protection 45 Climate Protection The "Climate Protection" function: • Supervises and maintains the internal temperature and humidity within allowed ranges for the units in the RBS • Controls the connection and disconnection of power, at start (or restart) of the RBS and at extreme internal temperature. The external temperature range for each RBS type is product-specific.
PAGE 340
Climate Protection Description This function maintains the internal temperature by an internally circulated air system (separated from the external environment). The internally circulated air will pass through an active cooling unit which has the capacity to lower the internal air temperature below the external environmental temperature. 45.2.
PAGE 341
Climate Protection 45.2.5 Climate Supervision The internal temperature and humidity of the air in the RBS are measured by sensors and kept within working ranges. The following parameters are measured: • The internal temperature outside the normal range • The internal temperature outside the safe function range • The internal relative humidity raised above the upper limit for safe function, see note below. Administration • The internal temperature in the RBS cabinet is readable.
PAGE 342
Climate Protection − 45.2.8 The RBS power system is connected but the users are not. However, as soon as the internal temperature falls below the upper limit for safe function, the users are connected. Power Disconnection The users are disconnected from the DC power when the internal temperature falls below the lower limit for safe function. The users are reconnected to the DC power when the internal temperature has raised 5 C above the lower limit for safe function.
PAGE 343
EMC Capabilities 46 EMC Capabilities This specification covers the capabilities of the RBS 2000 in respect of EMC (ElectroMagnetic Compatibility). The capabilities include conducted and radiated emission as well as conducted and radiated immunity thresholds. The internal EMC capabilities of RBS 2000 and interference appearing on antenna ports are not covered by this chapter. 46.1 References 1.
PAGE 344
EMC Capabilities Power frequency magnetic fiels immunity tests 13. EN 61000–4–11 Voltage Dips, short interruptions and voltage variations. Immunity tests 14. VDE 0878, 1986 Radio Interface Suppression of Telecommunication Systems and Apparatus 15. ITU-T Recommendation K.20, 1984 Resistibility of Telecommunication Switching Equipment to Overvoltages and Overcurrents. 46.
PAGE 345
EMC Capabilities Performance Criteria TT Transient phenomena applied to Transmitters. A communication link shall be established at the start of the test and maintained during and after injection of the transients Performance Criteria CR Continous phenomena applied to Receivers. A communication link shall be established at the start of the test and maintained during the test. For the system the RXQUAL (as defined in GSM 05.
PAGE 346
EMC Capabilities EMC directive The EMC capabilities of the RBS fulfills the mandatory requirements specified in the EMC directive, 89/336/EEC, which gives compliance for trade in EU member countries. Generic Standards The following generic standards are fulfilled by the system: EN 50 081–1, Jan 1992 Emission EN 50 082–1, Jan 1992 Immunity 46.3.
PAGE 347
EMC Capabilities Table 131 46.3.
PAGE 348
EMC Capabilities 46.3.
PAGE 349
EMC Capabilities Table 140 Surge test 1.
PAGE 350
EMC Capabilities Criteria CT for transmitter units Criteria CR for receiver units Table 145 46.3.8 Immunity of 50/60 Hz magnetic fields Basic standard EN 61000-4-8 Test level 10 A/m, 50/60 Hz Performance Criteria A Electro-static Discharges Table 146 Immunity of enclosure port Basic standard EN 61000-4-2 Test level Air discharges: 15 kV Contact discharges: 8 kV Performance Criteria B Limit standard ETS 300 342-2 Test level Air discharges: 8 kV Contact discharges: 4 kV.
PAGE 351
Transmission Interface Handling G.703 2048 kbit/s 47 Transmission Interface Handling G.703 2048 kbit/s This function specification covers RBS functions for layer 1 communications on A-bis. The function Layer 1 Termination terminates a 2048 kbit/s G.703 PCM line. The function Supervision of Transmission faults detects faults in the transmission interface. The function Supervision of Transmission Quality monitors the quality of the transmission. 47.
PAGE 352
Transmission Interface Handling G.
PAGE 353
Transmission Interface Handling G.703 2048 kbit/s RBS 1 Downstream BSC PCM-A Upstream Downstream Mobile Station Upstream PCM-B Upstream Downstream RBS 2 PCM-A Upstream PCM-B 01_0306A Figure 104 Upstream and Downstream For further information, see ITU-T G.704 White Book. 47.3 Functions 47.3.1 Layer 1 Termination 2048 kbit/s The function is initiated during restart of DXU. Layer 1 termination of the transport network interface is handled according to /GSM:08.54:4.0.0/.
PAGE 354
Transmission Interface Handling G.703 2048 kbit/s • Alarm indication to the remote end (A-bit in time slot 0 equal to "1") • CRC-4 error indicator (E-bit in time slot 0 equal to "0") Both actions are according to ITU-T recommendations G.704 and G.732. • Transmission of spare bits (Sa4-Sa8). The spare bits form a fixed bit pattern (see section Operation and Maintenance below) Two PCM paths are supported: PCM-A and PCM-B. 47.3.
PAGE 355
Transmission Interface Handling G.703 2048 kbit/s performed when the AO DP is in state "Enable". When the AO DP is enabled, all fault supervision states are set to zero. Reports are sent to the BSC is sent to the BSC when the alarm status is changed or when the BSC requires it. Fault supervision of the PCM line is performed according to /ITU-T rec. G.732 section 4/ and /GSM:08.54:4.0.0/.
PAGE 356
Transmission Interface Handling G.703 2048 kbit/s The frame alignment word in time slot 0 even frames is used to determine the error rate. ERATE ceases –3 Detection of bit error ratio less than 10 . LOS commences Three or less 1’s are received in a time interval of 250 µs. LOS ceases More than three 1’s are received in a time interval of 250 µs. AIS commences A continuous stream of 1’s during two frames. A limited number of 0’s –3 corresponding to BER = 10 is allowed.
PAGE 357
Transmission Interface Handling G.703 2048 kbit/s A new period of available state begins at the onset of Q consecutive seconds with no SES detected. These Q seconds are considered to be part of the available time. 47.3.4 Supervision of Transmission Quality The function is initiated when the AO DP is enabled from the BSC. The configuration of quality supervision can only be performed when the AO DP is in state “Disable”. The reporting to the BSC is performed when the AO DP is in state “Enable”.
PAGE 358
Transmission Interface Handling G.703 2048 kbit/s Every detected fault situation is registered and regarded as a disturbance, even if it does not last long enough to be recognised as a fault. The DF is supervised and reported as the number of disturbances during the BI. Both counters are handled separately. Slip Frequency supervision This supervision monitors the number of slips per time interval. A slip is defined as where one frame (256 bits) is either lost or duplicated.
PAGE 359
Transmission Interface Handling G.703 2048 kbit/s Severely Errored Seconds supervision An SES is a second with at least one of the events: • CRC-4 is OFF: At least N4 frame bit errors • CRC-4 is ON: At least N1 CRC-4 errors • LOF alignment • LOS • AIS • A-bit equal to “1” from the remote end • N1 E-bit indication received from the remote end (only valid when CRC-4 is used) Two counters for severely errored seconds exist.
PAGE 360
Transmission Interface Handling G.703 2048 kbit/s The number of unavailable seconds for each direction is reported after each BI. 47.3.5 Administration Supervision of transmission faults and transmission quality can be performed in different ways. With the help of parameters, the supervision can be configured to meet a wide range of requirements. The configuration parameters can only be changed when the AO DP is in state “Disable”.
PAGE 361
Transmission Interface Handling G.703 2048 kbit/s − • Base interval for ES, SES, UAS, BFF and SF − • Valid values: 60 and 80 s Base interval for DF and SF − 47.3.6 The resolution is 1 ms, but the accuracy is ±25 ms Value range: 1-24 h Multidrop Layer 1 For an RBS configured for multidrop, the function is initiated during restart of CMRU. For an RBS not configured for multidrop, the function is initiated when the parameter Network Topology is set by the OMT to indicate multidrop (cascade).
PAGE 362
Transmission Interface Handling G.
PAGE 363
Transmission Interface Handling DS1 1544 kbit/s 48 Transmission Interface Handling DS1 1544 kbit/s This function specification covers RBS functions for layer 1 communications on A-bis. The function Layer 1 Termination terminates a 1544 kbit/s DS1 PCM line. The function Supervision of Transmission faults detects faults in the transmission interface. The function Supervision of Transmission Quality monitors the quality of the transmission. 48.
PAGE 364
Transmission Interface Handling DS1 1544 kbit/s Table 149 Extended Superframe Format (ESF) F bits Bit use in each timeslot Frame number Bit number FPS DL CRC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 0 193 386 579 772 965 1158 1351 1544 1737 1930 2123 2316 2509 2702 2895 3088 3281 3474 3667 3860 4053 4246 4439 0 0 1 0 1 1 m m m m m m m m m m m m - C1 C2 C3 C4 C5 C6 - 1) Signalling bit use options 1) 1) Traffic Sign.
PAGE 365
Transmission Interface Handling DS1 1544 kbit/s Downstream The path for information from the BSC to the MS, see Figure 105 on page 363. Upstream The path for information from the MS to the BSC, see Figure 105 on page 363. Linear Cascade Chain A cascade of RBS:s according to Figure 105 on page 363. RBS 1 Downstream BSC PCM-A Upstream Downstream Mobile Station Upstream PCM-B Upstream Downstream RBS 2 PCM-A Upstream PCM-B 01_0306A Figure 105 Upstream and Downstream 48.3 Functions 48.3.
PAGE 366
Transmission Interface Handling DS1 1544 kbit/s • Input jitter and wander tolerance according to AT&T Accunet T1.5 Service 1990 (TR 62411). This tolerance is valid for PCM-A and PCM-B respectively. The tolerance of relative phase differance (that is, phase differance between PCM-A and PCM-B) is 56 UIPTP • Fault supervision of each PCM path is performed according to − ANSI T1.403, section 9 (1995) − AT&T T1.
PAGE 367
Transmission Interface Handling DS1 1544 kbit/s 4. Neither PCM-A nor B can be used as reference source The free running oscillator is selected as reference source The free running oscillator is used to synchronize both PCM-A and B outgoing. The default setting of PCM-A and PCM-B is: PCM-A: “Available for synchronization” PCM-B: “Not available for synchronization”. The parameters can be modified from OMT. The new setting is activated immediately.
PAGE 368
Transmission Interface Handling DS1 1544 kbit/s LOF commences A LOF condition is declared when any two of five consecutive received framing bits contain bit errors in the framing pattern or when LOS condition is declared. LOF ceases Recovery of frame alignment signal. ERATE commences An ERATE condition is declared when the bit error rate is equal to or –3 greater than 1*10 during time T. The number of CRC-6 errors is used in this evaluation.
PAGE 369
Transmission Interface Handling DS1 1544 kbit/s UAST ceases UAST ceases when available state is declared. Each direction (upstream and downstream) is supervised independently of the other. 48.3.4 Supervision of Transmission Quality The function is initiated when the AO DP is enabled from the BSC. The configuration of quality supervision can only be performed when the AO DP is in state “Disable”. The reporting to the BSC is performed when the AO DP is in state “Enable”.
PAGE 370
Transmission Interface Handling DS1 1544 kbit/s Two disturbance frequency counters exist. Both are derived from the downstream PCM port, but one is closely connected to downstream faults while the other one is related to upstream faults. The DF downstream counter is incremented by 1 for each occurrence of • LOF or • LOS or • AIS The DF upstream counter is incremented by 1 for each occurrence of RAI.
PAGE 371
Transmission Interface Handling DS1 1544 kbit/s • RAI ES are not counted during unavailable state. Both ES counters are reported after each BI. Severely Errored Seconds supervision An SES is a is a second with at least one of the events: • N1 CRC-6 errors • LOF alignment • LOS • AIS • RAI Two counters for severely errored seconds exist. Both are derived from the downstream PCM port, but one is closely connected to downstream faults while the other one is related to upstream faults.
PAGE 372
Transmission Interface Handling DS1 1544 kbit/s 48.3.5 Administration Supervision of transmission faults and transmission quality can be performed in different ways. With the help of parameters, the supervision can be configured to meet a wide range of requirements. The configuration parameters can only be changed when the AO DP is in state “Disable”. The parameters of interest are given below.
PAGE 373
Transmission Interface Handling DS1 1544 kbit/s • Base interval for DF and SF − 48.3.6 Value range: 1-24 h Multidrop Layer 1 For an RBS configured for multidrop, the function is initiated during restart of CMRU. For an RBS not configured for multidrop, the function is initiated when the parameter Network Topology is set by the OMT to indicate multidrop (cascade).
PAGE 375
Terrestrial Link Handling 49 Terrestrial Link Handling This function specification covers RBS functions for layer 2 communication on A-bis. The function Layer 2 Link Handling is used for layer 2 signalling to/ from RBS. 49.1 References Whenever a reference is made to a function described in another chapter, please refer to the table of contents to find the appropriate chapter. 49.2 Concepts Operation and Maintenance Link Layer 2 communication link for operation and maintenance services on A-bis.
PAGE 377
Channel Distribution Function 50 Channel Distribution Function This function specification covers RBS functions for Layer 2 communication on A-bis. The function Channel Distribution switches channels in the transport network interface to different RBS entities. The function Scanning of Terrestrial Channels makes it possible to communicate with RBS on a non-predefined terrestrial channel.
PAGE 378
Channel Distribution Function RSL Radio Signalling Link. Layer 2 communication link for traffical services on A-bis. Terrestrial Channel Terrestrial channels are physical channels for communication with, for example, the BSC over the Transport Network. There are different types of terrestrial channels, dependent on their use: – Terrestrial Signalling channels – Terrestrial Traffic channels Terrestrial signalling channels are used for LAPD signalling only.
PAGE 379
Channel Distribution Function configuration commands consist of a number of connections between timeslots in the Transport network, the Concentrator and the TRXs. Configuration includes set-up of new connections and release of connections no longer required. Connections which are the same in the old and the new configuration are left undisturbed. Idle pattern is transmitted on unoccupied timeslots in the transport network interface. An unoccupied timeslot is a timeslot which has no channel assigned to it.
PAGE 380
Channel Distribution Function 50.3.1 3 548-551 552-559 4 560-563 564-571 5 572-575 576-583 6 640-643 644-651 7 652-655 656-663 8 664-667 668-675 9 676-679 680-687 10 688-691 692-699 11 700-703 704-711 Concentration of LAPD signals The purpose of LAPD concentration is to reduce the number of required physical links between the BSC and the BTS. This is done by allowing a number of TRXs to use the same physical transmission link for LAPD signalling between the BSC and the BTS.
PAGE 381
Channel Distribution Function 50.3.2 Scanning of Terrestrial Channels The function is initiated: • When the CMRU is in Local mode and the Remote button is pressed • When the CMRU is in Remote mode and (re-)started • When CF has lost its layer 2 connection to BSC • When the CF link is disconnected (reception of DISC command frame) RBS searches all terrestrial signalling channels, plus a number of unoccupied terrestrial channels, for data link establishment attempts directed towards CF.
PAGE 382
Channel Distribution Function Shared terrestrial signalling channel CF TRX 01_0299B Figure 108 Sharing terrestrial signalling channel Messages are sent forward to their destinations without adding, deleting or changing information. Messages addressed to MO CF are sent to MO CF. All other messages are sent to the TRXs. The function terminates when MO CF has lost its data link connection. At termination, MO CF is disconnected from the shared terrestrial signalling channel.
PAGE 383
Channel Distribution Function A BSC RBS 1 B A RBS 2 B A RBS 3 B 02_0301A Figure 109 Linear Cascade Connection The multidrop function only handles 64 kbit/s timeslots. A 64 kbit/s timeslot is considered to be used by the RBS if any of its subtimeslots are configured in the IS or used for the CF or remote OMT link or used for DXX communication. If, for example, ICP 7 is used in the IS configuration, the whole timeslot 2 is considered to be used by the current RBS.
PAGE 384
Channel Distribution Function PCM A PCM B PCM A RBS 1 PCM B RBS 2 TS 1 2 3 4 5 6 7 03_0301A Figure 110 Multidrop example All timeslots not used by the own RBS are transparently connected between PCM A and PCM B. The timeslots used by the RBS will be connected from PCM A to the respective destination in the RBS. These timeslots will have valid idle pattern transmitted on PCM B and incoming data on PCM B is ignored.
PAGE 385
Channel Distribution Function The RBS searches for Remote OMT link establishment on PCM A timeslot 23 whenever this timeslot is not used by other functions.
PAGE 387
Transport network O&M functions-DXX Support 51 Transport network O&M functions-DXX Support 51.1 Introduction This Function Specification covers RBS functions for Transport Network Operation and Maintenance.
PAGE 388
Transport network O&M functions-DXX Support BSC DXX Transport Module DXX RBS 2000 NMS DXX Support RBS 2000 DXX Support RBS 2000 P002615B Figure 111 Example of DXX support in an RBS 2000 network. The RBS 2000 nodes including the DXX support functions will be visible as nodes in DXX/NMS, and the layer 1 transmission in the RBS nodes will be supervised from NMS.
PAGE 389
Transport network O&M functions-DXX Support 51.3 Concepts In Figure 112 on page 387, the nomenclature for DXX is stated. DXX (Transmission system for cellular applications) NMS DXX node (TNO&M) DXX node DXX node DXX node BSC RBS RBS PCM-B PCM-A PCM-B PCM-A DXX support DXX support DXX transmission network P002616 Figure 112 EN/LZT 720 0008 2001-06-26 DXX terminology. DXX DXX is a transmission system for cellular applications. It includes O&M and switching functionality (among others).
PAGE 390
Transport network O&M functions-DXX Support 51.4 Functions 51.4.1 Enabling and detection of TNOM protocol This function is initiated when the parameter TNOM_use in the RBS database is set to on. This function is used to control the enabling and disabling of the Transport Network O&M functions in RBS 2000. The parameter TNOM_use stored in RBS DB is used for this. When the function is disabled no management timeslot is dedicated for the Transport Network O&M functions.
PAGE 391
Transport network O&M functions-DXX Support 51.4.4 DXX Node access control This function is initiated during restart of the DXU if the parameter TNOM_use in RBS DB is already set to ON, otherwise the function is initiated when the parameter is set to ON. The RBS support a node access control that is used to limit access rights to the node from DXX. This function maintains the node access registers. The value for node access possible to set from DXX are 1 to 65535 for limited access rights.
PAGE 392
Transport network O&M functions-DXX Support The fault conditions monitored within the common parts of the RBS are: • Flash check sum error A problem has been found when saving parameters to the non-volatile memory. • Reset There has been a unit reset (detected always after the power-up of the unit), and the TN O&M functions has restarted. The reset is reported as a delta alarm event. With delta alarm event means an event has occurred but is still not active.
PAGE 393
Transport network O&M functions-DXX Support • Rx Buffer slip/BUFIN (Slip) This fault is only used for E1. The fault is activated if one or more buffer slips have been detected during the last hour. A slip is defined as where one frame (0.125 ms) is either lost or duplicated. • Status for CSU line loop back, LLB (T1) This message is only used for T1. It indicates that the CSU line loop back is activated. • Status for CSU payload loop back, PLB (T1) This message is only used for T1.
PAGE 394
Transport network O&M functions-DXX Support Each of the statistics are supported by two groups of registers and two groups of counters providing the performance data. The registers and counters can be read and reset. They are: • Counters for current 15 minutes report • Registers for previous 15 minutes report • Counters for current 24 hours report • Registers for previous 24 hours report The information of the 15 minutes counters and registers are sent together in one report.
PAGE 395
Transport network O&M functions-DXX Support part of the unavailable time. A new period of available time begins at the onset of 10 consecutive seconds with no SES detected. These 10 seconds are considered to be part of the available time. SES A severely errored second (SES) is a second with at least one of the following events.
PAGE 396
Transport network O&M functions-DXX Support - Alarm indication signal (AIS) The SES is performed in accordance with [TIH_E1] and [TIH_T1]. DM One minute interval with one of the following but not SES or UAT: For E1 system: - 123 CRC errors (when CRC is used) - 2 faulty FSW (when CRC is not used) and for T1 system: - 52 CRC errors 51.4.9 CRCE Numbers of CRC errors from far end is indicated by the E-bit in time slot 0. Only used when the node is configured for CRC-4.
PAGE 397
Transport network O&M functions-DXX Support Fault freezing It is in RBS possible to set a fault mask to freeze fault monitoring of a specified block at a specified period of time. The blocks are PCM-A, PCM-B and Common parts (SW faults). The time out value is 0 to 10 000 000 seconds. With the fault freezing activated the fault status of the RBS is frozen, i.e. the faults are neither updated nor reset.
PAGE 398
Transport network O&M functions-DXX Support Both CSU line loop back and CSU payload loop back have higher priority than the DXX line loop. This means that the DXX loop will be suspended when CSU loops (PLB or LLB) is activated. When CSU loop is deactivated, the DXX loop is resumed again. 51.4.11 DXX Node inventory This function is initiated during restart of the DXU if the parameter TNOM_use in RBS DB is already set to ON, otherwise the function is initiated when the parameter is set to ON.
PAGE 399
Transport network O&M functions-DXX Support TNOM timeslotThe parameter used for the Transport Network O&M Timeslot allocation is:TNOM_timeslot The valid range of the parameter is:1–31 for E11–24 for T1 TNOM node IdThe parameter used for the Transport Network O&M Node Id allocation is:TNOM_nodeid The valid range of the parameter is:1–65534 The parameters can be modified from the OMT. The parameter TNOM_nodeid can be modified from DXX as well. The new settings are activated immediately. 51.4.
PAGE 400
Transport network O&M functions-DXX Support A message that is received at PCM-A in RBS is processed according to layer 1, 2 and 3. In layer 3, the destination node id is housed. If the current RBS is the destination node, the message is sent to layer 7. If the RBS is in topology ’Cascaded chain’ and not the destination node, the message is sent to the next RBS via PCM-B. The same is valid in the other direction receiving data on PCM-B.
PAGE 401
BTS Parameter Limitations 52 BTS Parameter Limitations This document specifies configurable BTS parameters with limitations compared with the parameter ranges in the Abis O&M IWD. BTS parameters with no limitations compared to the Abis O&M IWD are not stated in this document. 52.1 Purpose and Readers The purpose is to show BTS parameters with parameter range limitations compared to the Abis O&M IWD.
PAGE 402
BTS Parameter Limitations IWD-defined value range: 52.3.3 0–1 BS_AG_BLKS_RES BTS-supported value range: 52.3.4 BS_AG_BLKS_RES: 0–1 IWD-defined value range: 0–7 CON Connection List BTS supported value range: y 0 – 12 mi 2 – 13 CCP Tag CCP number 256, 260, ... 348 Reserved 0 – 255, 257 – 259, 261 263, ...
PAGE 403
BTS Parameter Limitations 52.3.7 L/R TI: 0–1 L/R SWI: 0–1 TRA: 0–1 PCM SYNC: 0–1 EXT SYNC: 0 IWD-defined value range: 0–1 LMT: 0 External Condition Map Class 2 BTS-supported value ranges: 52.3.8 RBS DOOR: 0–1 LAPD Q CG: 0 EXT SYNC: 0 PCM SYNC: 0–1 IWD-defined value range: 0–1 File Relation Indication BTS-supported value ranges: Other state: 0, 3 IWD-defined value range: 0–3 Note: 52.3.9 There are limitations for specific combinations of current state and other state.
PAGE 404
BTS Parameter Limitations ARFCN, 1800 MHz: 512 – 885(dec) ARFCN, 1900 MHz: 512 – 810(dec) Note: Valid 900 MHz "option" is dependent on hardware configuration. IWD-defined value range: 52.3.
PAGE 405
BTS Parameter Limitations 52.3.13 IS Connection List BTS-supported value range: ICP: 4 – 127(dec) 132 – 351(dec) 512 – 583(dec) 640 – 711(dec) CI: 1 – 72(dec) The IWD-defined value ranges: ICP: 0 – 1023(dec) CI: 1 – 255(dec) Note: 52.3.14 There are limitations for specific combinations. For more information see the figure in Appendix. Local Access State BTS-supported value range: Local Access State parameter: 0 IWD-defined value range: 52.3.
PAGE 406
BTS Parameter Limitations BTS-supported value range. Nominal power parameters: 1 900 MHz: 35 – 47, 49 1800 MHz: 33 – 45, 47 1900 MHz: 33 – 45, 47 IWD-defined value range: 0 – 63(dec) Note: (dec) 1 (dec) 1 (dec) Only steps by 2 is configurable (from the highest value). 1) BSC uses this value to activate SW Power Boost (the value does not describe the actual output power). The RBS then uses TX diversity, and configures each transmitter that supports the master-slave configuration to max.
PAGE 407
BTS Parameter Limitations 52.4 Appendix ICP 4 5 6 7 8 9 10 11 12 13 14 TS1 TS2 PCM-A . . TS31 TS1 TS2 PCM-B TS31 o o o o o o o o o o o . 122 123 124 125 126 127 o o o o o o 132 133 134 135 136 137 138 139 140 141 142 o o o o o o o o o o o 250 251 252 253 254 255 o o o o o o o o o o o o o o ICP 256 257 258 259 260 261 262 263 . CCP 256 o 257 o 258 o 259 o 260 o 261 o 262 o 263 o SCH1 SCH2 .
PAGE 409
Glossary 53 Glossary This glossary lists abbreviations and acronyms used in texts dealing with RBS 2000. Some basic terms and acronyms needed for cross-references are included in the list. In the RBS manuals, terminology defined by GSM is used together with terms related to Ericsson GSM system products. Terms and Abbreviations An arrow -> is used to indicate a reference to another entry in this list.
PAGE 410
Glossary BCCH Broadcast Control CHannel Downlink only broadcast channel for broadcast of general information at a base station, on a base station basis. BDM Battery Distribution Module The BDM is an IDM with a battery and a local processor. BER Bit Error Rate BFU Battery Fuse Unit BIAS-IC BIAS Injector Bm Denotes a full rate traffic channel BPC Basic Physical Channel Denotes the air interface transport vehicle formed by repetition of one time slot on one or more radio frequency channels.
PAGE 411
Glossary PCH Paging CHannel RACH Random Access CHannel AGCH Access Grant CHannel CCU Climate Control Unit CDU Combining and Distribution Unit CE Conformité Européenne Cell An area of radio coverage identified by the GSM network by means of the cell identity CF Central Functions Channel The common term channel denotes the virtual connection, consisting of physical and logical channels between BSS and MS, during a call in progress.
PAGE 412
Glossary CPU Central Processing Unit CSA Canadian Standards Association CSES Consecutive Severely Errored Second CSU Channel Service Unit CU Combining Unit (RU in CDU_D) CXU Configuration Switch Unit Dannie ASIC in the TRU DB DataBase DC Direct Current DCCH Dedicated Control CHannel Dedicated control channels carry signalling data. DCCU DC Connection Unit ddTMA Dual Duplex Tower Mounted Amplifier This type needs only one combined TX/ RX feeder from the BTS to the TMA.
PAGE 413
Glossary DSP Digital Signal Processor DT Data Transcript dTMA Duplex TMA dTMA is similar to the old ALNA except for different characteristics. –>ddTMA –>rTMA –>TMA EN/LZT 720 0008 2001-06-26 dTRU double Transceiver Unit DU Distribution Unit (RU in CDU-D) DX Direct Exchange DXC Digital Cross Connector DXU Distribution Switch Unit DXX Ericsson Cellular Transmission System including NMS E1 Short for G.
PAGE 414
Glossary FACCH Fast Associated Control CHannel Main signalling channel in association with a TCH.
PAGE 415
Glossary HMS Heat Management System Hum Humidity HW HardWare HWU Hardware Unit An HWU consists of one or more SEs. An HWU is a functional unit within the RBS. The HWU is either active (equipped with a processor) or passive (without processor).
PAGE 416
Glossary LED Light Emitting Diode LLB Line Loop Back LNA Low Noise Amplifier Local bus The local bus offers communication between a central main RU (DXU) and distributed main RUs (TRU and ECU). Local mode When the RU is in RU mode Local it is not prepared for BSC communication. Local/Remote switch Using the Local/Remote switch, an operator orders the RU to enter Local or Remote mode.
PAGE 417
Glossary MMI Man-Machine Interface MO Managed Object MR Measurement Receiver MS Mobile Station MSC Mobile services Switching Centre GSM network unit for switching, routing and controlling calls to and from the Public Switched Telephone Network (PSTN) and other networks. MSTP Mobile Station Test Point Multidrop Two or more RBSs are connected in a chain to the same transmission system. All the relevant timeslots are dropped out by each RBS. (This function is sometime called cascading.
PAGE 418
Glossary OVP OverVoltage Protection OXU Space for Optional Expansion P-GSM Primary GSM Passive RU A passive replaceable unit has a very low level of intelligence and is independent of the processor system. PCAT Product CATalogue A web-based ordering system in Ericsson’s intranet. PCH Paging CHannel Downlink only subchannel of CCCH for system paging of MSs.
PAGE 419
Glossary PSU Power Supply Unit PWU Power Unit RACH Random Access CHannel Uplink only subchannel of CCCH for MS request for allocation of a dedicated channel. -> CCCH RAI Remote Alarm Indication RAM Random Access Memory RBER Radio Bit Error Ratio RBS Radio Base Station All equipment forming one or more Ericsson base stations. ->BTS RCB Radio Connection Box RD Receive Data Remote mode When the RU is in RU mode Remote, a link is established between the BCS and the central main RU.
PAGE 420
Glossary the same type. The RU is the smallest unit that can be handled on site. RX Receiver RXA Receiver antenna branch A RXB Receiver antenna branch B RXD Receiver Divider RXDA Receiver Divider Amplifier RXLEV Measure of signal strength as defined in GSM 05.08:8.1.4 RXQUAL Measure of signal quality as defined in GSM 05.08:8.2.
PAGE 421
Glossary SW SoftWare SWR Standing Wave Ratio SYNC Synchronous T1 Transmission facility for DS1 (1544 kbit/s) TA Timing Advance A signal sent by the BTS to the MS which the MS uses to advance its timing of transmissions to the BTS to compensate for propagation delay. TC Transaction Capabilities TCH Traffic CHannel The traffic channels carry either encoded speech or user data.
PAGE 422
Glossary The Transport module is non-RBS equipment belonging to the transport network. TMA Tower Mounted Amplifier There are three types of TMAs: dTMA, rTMA and ddTMA. –>dTMA –>rTMA –>ddTMA TN Timeslot Number TN O&M Transport Network operation and Maintenance (in general) Tora ASIC in the TRU TRA Transcoder Rate Adapter The TRA Unit performs transcoding of speech information and rate adaption of data information.
PAGE 423
Glossary EN/LZT 720 0008 2001-06-26 Uplink Signalling direction from the MS to the system UPS Uninterrupted Power Supply VCO Voltage Controlled Oscillator VSWR Voltage Standing Wave Ratio RF signal measure. The quotient between transmitted and reflected voltage. X-bus The X-bus carries transmit air data frames between transceivers.
PAGE 425
Description 2 (37) Contents 1 INTRODUCTION...............................................................................................................................................4 1.1 1.2 A NEW POWERFUL MEMBER OF THE RBS 2000 FAMILY .................................................................................4 RBS 2206 – DOUBLE YOUR CAPACITY WITH THE SAME FOOTPRINT .............................................................5 2 RBS 2206 ARCHITECTURE .........................................
PAGE 426
Description 3 (37) • Please note that this description includes details on both basic and optional products. It does not necessarily correspond to any specific release or delivery time, nor is it a complete technical specification. LRN/X-99:083 Rev F 2001-07-17 © Ericsson.
PAGE 427
Description 4 (37) 1 Introduction The purpose of this document is to describe the powerful RBS 2206, which is a 12 TRX indoor GSM radio base station. The document aims to give a general overview of the RBS 2206. 1.1 A new powerful member of the RBS 2000 family The RBS 2206 is a new member of the highly successful RBS 2000 family. This guarantees a world-class supply flow, fast installation and commissioning, reliable operation & maintenance and coexistence with other RBS 2000 and RBS 200 products.
PAGE 428
Description 5 (37) 1.2 RBS 2206 – Double Your Capacity with the same footprint Ericsson’s GSM radio base station RBS 2206 facilitates capacity expansion without the need for new sites. The RBS 2206 provides convenience without compromise for GSM operators. Today, the mobile penetration has exceeded 70 percent in some mature markets and many operators are experiencing an almost explosive subscriber growth. In addition, the usage per subscriber is increasing.
PAGE 429
Description 6 (37) 2 RBS 2206 Architecture The RBS 2206 comprises the following major units: • • • • • • • • • Power Supply Unit (PSU) Distribution Switch Unit (DXU) Internal Distribution Module (IDM) Double Transceiver Unit (dTRU) Configuration Switch Unit (CXU) Combining and Distribution Unit (CDU) AC or DC Connection Unit (ACCU/DCCU) Fan Control Unit (FCU) DC filter Figure 2. RBS 2206. © Ericsson.
PAGE 430
Description 7 (37) Power Supply Unit (PSU) The PSU rectifies or converts the power supply voltage to regulated system voltage, +24 VDC. The PSU’s are connected in parallel at the secondary side and may be configured with an N+1 redundancy. When using a battery backup, an extra PSU is recommended for recharging of batteries. If the RBS is equipped with a redundant PSU no extra PSU is required for battery charging. RBS 2206 is equipped with limited transient protection.
PAGE 431
Description 8 (37) Distribution Switch Unit (DXU) The DXU provides a system interface to the 2 Mbit/s or 1.5 Mbit/s link and cross connects individual time slots to certain transceivers. The DXU also extracts the synchronisation information from the PCM link and generates a timing reference for the RBS. The DXU supports LAPD Multiplexing, LAPD Concentration and the Multi Drop functionality. Figure 3. Front view of DXU-21.
PAGE 432
Description 9 (37) Double Transceiver Unit (dTRU) The dTRU is a two-transceiver Replaceable Unit. Up to six dTRU units can be installed in one RBS 2206 cabinet, enabling up to 12 TRXs per cabinet. Figure 4. Double Transceiver Unit. There are different versions of the dTRU dependent on frequency band and EDGE support. All dTRUs are HW prepared to handle HSCSD and GPRS, the EDGE dTRU is HW prepared to also handle the ECSD and EGPRS functionality. The dTRU supports different ciphering standards.
PAGE 433
Description 10 (37) Combining and Distribution Unit (CDU) The CDU combines the transmitted signals from the transceivers and distributes the received signals. Duplex filters are included in the CDU. A measuring coupler, providing forward and reflected power measurements for Voltage Standing Wave Ratio (VSWR) calculations is located in the CDU. Two different CDU types exist for GSM 900 and 1800 (CDU-F and CDU-G) and one CDU type for GSM 800 and GSM 1900 (CDU-G). • With hybrid combining, CDU-G.
PAGE 434
Description 11 (37) AC/DC connection unit and DC filter The ACCU/DCCU handles the distribution and connection of the incoming power supply voltages 120-250 VAC (ACCU) or –48/-60 VDC (DCCU) to the PSU´s. The DC filter handles the connection of the incoming +24 VDC power supply and battery backup. Battery backup is available together with 120-250 VAC supply voltage. Fan Control Unit (FCU) The FCU controls the fans in the cabinet.
PAGE 435
Description 12 (37) The RBS 2206 cabinet • • • • • Indoor specified. Supports up to six double transceiver units (12 TRXs) per cabinet. One cabinet can be configured as a one, two or three sector cell configuration. The cabinet fulfils seismic requirements The cabinet door can be hinged on the left or right hand side. P005523A Figure 7. RBS 2206 cabinet. All units in the cabinet are easily accessible from the front of the cabinet.
PAGE 436
Description 13 (37) 3 Technical Specification 3.1 Mechanical Dimensions Table 1. Mechanical Dimensions. Unit Cabinet incl. base frame Cabinet Base frame*) Width (mm) 600 600 600 Depth (mm) 400 400 400 Height (mm) 1850 1800 50 *) The Base Frame is mandatory. 3.2 Weight Table 2. Weight. Unit Weight (kg) Fully equipped cabinet incl. base frame 3.3 230 Power Requirements Table 3. Power Requirements. Power Option -(48/60) VDC +24 VDC 120-250 VAC 3.
PAGE 437
Description 14 (37) 3.6 Electromagnetic Compatibility (EMC) All RBS 2206 models fulfils the Electromagnetic Compatibility (EMC) requirements according to: • ETS 300 342-2, the BTS product standard, in line with the European EMC Directive 89/336/EEC. • 1999/5/EC Radio and TTE directive. • EN 55022 Class B. • GSM:11.21 • FCC, part 15. The RBS 2206 is CE marked in order to show this compliance. 3.7 External Alarms RBS 2206 provides connections for external alarms.
PAGE 438
Description 15 (37) 3.9 Transmission All RBS 2000 models support multi-drop bypass functionality. Each RBS can be configured for stand alone or linear cascade mode. The configuration is performed by means of the OMT. LAPD concentration and LAPD multiplexing could be used to make the transmission resource more efficient. The DXU-21 is equipped with four external ports supporting in total up to 8 Mbit/s. Interfaces T1, 1.
PAGE 439
Description 16 (37) 3.
PAGE 440
Description 17 (37) 4 GSM 800 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. 4.1 System Data Receiver: Transmitter: Carrier bandwidth: Channels per carrier: Modulation method: Duplex Separation: 824 to 849 MHz 869 to 894 MHz 200 kHz 8 full rate channels GMSK, EDGE-dTRU handles both GMSK and 8-PSK 45 MHz The RBS output power is dynamically controlled.
PAGE 441
Description 18 (37) 4.2 CDU-types for GSM 800 CDU-G 800 TX/RX CXU TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA DPX Sector 1 TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX TX/RX TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 2 DPX TX/RX CDU-G TXCout dTRU RXin1 TX2 RXout2 RXin2 TXCout dTRU RXDA CDUDPX G TX/RX TX1 RXin1 RXout1 RXin2 RXDA Sector 3 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX Figure 8.
PAGE 442
Description 19 (37) The CDU-G 800 MHz main characteristics are: • • • • • • • Up to 4 TRXs per two antennas (two physical antennas) or one dual polarised. No limitations on frequency planning. Required frequency separation is 400 kHz (due to GSM specification). Synthesiser and base band frequency hopping are supported. Configurations with and without hybrid combination are possible (with the same HW). Maximum 12 TRXs per cabinet when the hybrids in the dTRUs are used.
PAGE 443
Description 20 (37) 4.3 GSM 800 Configurations The configurations are the maximum configurations within a given number of CDUs. The single cell configuration can be duplicated or triplicated to form multicell configurations by for instance utilising the Multi Drop functionality. Table 5. Configurations for GSM 800 with CDU-G without hybrids used in the dTRUs (uncombined mode). Max Config 1x2 2x2 3x2 No. of cabinets 1 1 1 TMA Opt. Opt. Opt.
PAGE 444
Description 21 (37) 5 GSM 900 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. 5.1 System Data Receiver: Transmitter: Carrier bandwidth: Channels per carrier: Modulation method: Duplex Separation: 880 to 915 MHz (E-GSM) 925 to 960 MHz (E-GSM) 200 kHz 8 full rate channels GMSK, EDGE-dTRU handles both GMSK and 8-PSK 45 MHz The RBS output power is dynamically controlled.
PAGE 445
Description 22 (37) 5.2 CDU-types for GSM 900 CDU-G 900 TX/RX CXU TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA DPX Sector 1 TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX TX/RX TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 2 DPX TX/RX CDU-G TXCout dTRU RXin1 TX2 RXout2 RXin2 TXCout dTRU RXDA CDUDPX G TX/RX TX1 RXin1 RXout1 RXin2 RXDA Sector 3 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX Figure 9.
PAGE 446
Description 23 (37) The CDU-G 900 MHz main characteristics are: • • • • • • • Up to 4 TRXs per two antennas (two physical antennas) or one dual polarised. No limitations on frequency planning. Required frequency separation is 400 kHz (due to GSM specification). Synthesiser and base band frequency hopping are supported. Configurations with and without hybrid combination are possible (with the same HW). Maximum 12 TRXs per cabinet when the hybrids in the dTRUs are used.
PAGE 447
Description 24 (37) CDU-F 900 CXU dTRU TXout1 TX1 RXin1 TX2 CDU-F Odd TRU RXin2 TX/RX TXout2 TXout1 dTRU TX1 TX2 RXin1 Even TRU DPX RXin2 TXout2 RXout1 LNA TXout1 dTRU TX1 RXin1 TX2 RXin2 CDU-F Odd TRU TXout2 TXout1 dTRU TX1 RXin1 TX2 RXin2 Even TRU TXout2 TXout1 RXin1 dTRU CDU-F TX1 RXin2 TX2 Odd TRU TXout2 TX/RX TXout1 TX1 RXin1 dTRU TX2 RXin2 Even TRU DPX TXout2 RXout1 LNA Figure 10.
PAGE 448
Description 25 (37) 5.3 GSM 900 Configurations The configurations are the maximum configurations within a given number of CDUs. The single cell configuration can be duplicated or triplicated to form multicell configurations by for instance utilising the Multi Drop functionality. Table 7. Configurations for GSM 900 with CDU-G without hybrids used in the dTRUs (uncombined mode). Max Config 1x2 2x2 3x2 No. of cabinets 1 1 1 TMA Opt. Opt. Opt.
PAGE 449
Description 26 (37) 6 GSM 1800 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. 6.1 System Data Receiver: Transmitter: Carrier bandwidth: Channels per carrier: Modulation method: Duplex Separation: 1710 to 1785 MHz 1805 to 1880 MHz 200 kHz 8 full rate channels GMSK, EDGE-dTRU handles both GMSK and 8-PSK 95 MHz The RBS output power is dynamically controlled.
PAGE 450
Description 27 (37) 6.2 CDU-types for GSM 1800 CDU-G 1800 TX/RX CXU TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 1 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX TX/RX TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 2 DPX TX/RX CDU-G TXCout dTRU RXin1 TX2 RXout2 RXin2 TXCout dTRU RXDA CDUDPX G TX/RX TX1 RXin1 RXout1 RXin2 RXDA Sector 3 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX Figure 11.
PAGE 451
Description 28 (37) The CDU-G 1800 MHz main characteristics are: • • • • • • • Up to 4 TRXs per two antennas (two physical antennas) or one dual polarised. No limitations on frequency planning. Required frequency separation is 400 kHz (due to GSM specification). Synthesiser and base band frequency hopping are supported. Configurations with and without hybrid combination are possible (with the same HW). Maximum 12 TRXs per cabinet when the hybrids in the dTRUs are used.
PAGE 452
Description 29 (37) CDU-F 1800 CXU dTRU TXout1 TX1 RXin1 TX2 CDU-F Odd TRU RXin2 TX/RX TXout2 TXout1 dTRU RXin1 TX1 TX2 Even TRU DPX RXin2 TXout2 RXout1 LNA TXout1 dTRU RXin1 RXin2 TX1 TX2 CDU-F Odd TRU TXout2 TXout1 dTRU TX1 RXin1 RXin2 TX2 Even TRU TXout2 TXout1 RXin1 dTRU RXin2 CDU-F TX1 TX2 Odd TRU TXout2 TX/RX TXout1 RXin1 dTRU RXin2 TX1 TX2 Even TRU DPX TXout2 RXout1 LNA Figure 12.
PAGE 453
Description 30 (37) 6.3 GSM 1800 MHz Configurations The configurations are the maximum configurations within a given number of CDU’s. The single cell configuration can be duplicated or triplicated to form multicell configurations by for instance utilising the Multi Drop functionality. Table 10. Configurations for GSM 1800 with CDU-G without hybrids used in the dTRUs (uncombined mode). Max Config 1x2 2x2 3x2 No. of cabinets 1 1 1 TMA Opt. Opt. Opt.
PAGE 454
Description 31 (37) 7 GSM 1900 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. 7.1 System Data Receiver: Transmitter: Carrier bandwidth: Channels per carrier: Modulation method: Duplex Separation: 1850 to 1910 MHz 1930 to 1990 MHz 200 kHz 8 full rate channels GMSK, EDGE-dTRU handles both GMSK and 8-PSK 80 MHz The RBS output power is dynamically controlled.
PAGE 455
Description 32 (37) 7.2 CDU-types for GSM 1900 CDU-G 1900 TX/RX CXU TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 1 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX TX/RX TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 2 DPX TX/RX CDU-G TXCout dTRU RXin1 TX2 RXout2 RXin2 TXCout dTRU RXDA CDUDPX G TX/RX TX1 RXin1 RXout1 RXin2 RXDA Sector 3 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX Figure 13.
PAGE 456
Description 33 (37) The CDU-G 1900 MHz main characteristics are: • • • • • • • Up to 4 TRXs per two antennas (two physical antennas) or one dual polarised. No limitations on frequency planning. Required frequency separation is 400 kHz (due to GSM specification). Synthesiser and base band frequency hopping are supported. Configurations with and without hybrid combination are possible (with the same HW). Maximum 12 TRXs per cabinet when the hybrids in the dTRUs are used.
PAGE 457
Description 34 (37) 8 Dual Band GSM 900/1800 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. The Dual Band BTS comprises equipment for both GSM 900 and GSM 1800. 8.1 System Data The System Data for the Dual Band RBS are the same as for the GSM 900 and the GSM 1800. 8.2 Configurations Dual Band RBS Table 15.
PAGE 458
Description 35 (37) 9 Dual Band GSM 800/1900 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. The Dual Band BTS comprises equipment for both GSM 800 and GSM 1900. 9.1 System Data The System Data for the Dual Band RBS are the same as for the GSM 800 and the GSM 1900. 9.2 Configurations Dual Band RBS Table 17.
PAGE 459
Description 36 (37) 10 Dual Band GSM 800/1800 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. The Dual Band BTS comprises equipment for both GSM 800 and GSM 1800. 10.1 System Data The System Data for the Dual Band RBS are the same as for the GSM 800 and the GSM 1800. 10.2 Configurations Dual Band RBS Table 18.
PAGE 460
Description 37 (37) 11 Acronyms and Abbreviations ACCU AO BCCH BDM BFU BSC BSS BTS CDU CXU dB dBm DCCU DTX DUPL DXU DXX EACU ECU ECSD EDGE EGPRS EMC FCOMB GMSK GPRS GSM HCOMB HCS HSCSD HW IDB IDM kbit/s kg kW L lb LAPD LED LTE Mbit/s MCU LRN/X-99:083 AC Connection Unit Application Object Broadcast Control Channel Battery Distribution Module Battery Fuse Unit Base Station Controller Base Station System Base Transceiver Station Combining and Distribution Unit Configuration Switch Unit Decibel Decibel rela
PAGE 461
Product Description . RBS 2106 Product Description Contents 1 INTRODUCTION............................................................................................................................................. 3 1.1 1.2 A NEW POWERFUL MEMBER OF THE RBS 2000 FAMILY ............................................................................... 3 RBS 2106 – DOUBLE YOUR CAPACITY WITH THE SAME FOOTPRINT ........................................................... 4 2 RBS 2106 ARCHITECTURE ............
PAGE 462
Product Description 2 (33) 11 ACRONYMS AND ABBREVIATIONS ................................................................................................... 39 • Please note that this description includes details on both basic and optional products. It does not necessarily correspond to any specific release or delivery time, nor is it a complete technical specification. © Ericsson.
PAGE 463
Product Description 3 (33) 1 Introduction The purpose of this document is to describe the powerful RBS 2106, which is a 12 TRX outdoor GSM radio baste station. The document aims to give a general overview of the RBS 2106. 1.1 A new powerful member of the RBS 2000 family The RBS 2106 is a new member of the highly successful RBS 2000 family.
PAGE 464
Product Description 4 (33) 1.2 RBS 2106 – Double Your Capacity with the same footprint Ericsson’s GSM radio base station RBS 2106 facilitates capacity expansion without the need for new sites. The RBS 2106 provides convenience without compromise for GSM operators. Today, the mobile penetration has exceeded 40 percent in mature markets and many operators are experiencing an almost explosive subscriber growth. In addition, the usage per subscriber is increasing.
PAGE 465
Product Description 5 (33) 2 RBS 2106 Architecture The RBS 2106 comprises the following major units: • • • • • • • • • • • • Power Supply Unit (PSU) Distribution Switch Unit (DXU) Internal Distribution Module (IDM) Double Transceiver Unit (dTRU) Configuration Switch Unit (CXU) Combining and Distribution Unit (CDU) AC Connection Unit (ACCU) Fan Control Unit (FCU) Climate Unit (CU, located in the door) Battery Box (BB) Transmission Module (TM) Antenna Sharing Unit (ASU) (option for GSM 800 and GSM 1900) F
PAGE 466
Product Description 6 (33) Power Supply Unit (PSU) The PSU rectifies AC supply voltage to regulated system voltage, +24 VDC. The PSU’s are connected in parallel at the secondary side and may be configured with an N+1 redundancy. When using a battery backup, an extra PSU is recommended for recharging of batteries. If the RBS is equipped with a redundant PSU no extra PSU is required for battery charging. © Ericsson.
PAGE 467
Product Description 7 (33) Distribution Switch Unit (DXU) The DXU provides a system interface to the 2 Mbit/s or 1.5 Mbit/s link and cross connects individual time slots to certain transceivers. The DXU also extracts the synchronisation information from the PCM link and generates a timing reference for the RBS. The DXU supports LAPD Multiplexing, LAPD Concentration and the Multi Drop functionality. Figure 3. Front view of DXU-21.
PAGE 468
Product Description 8 (33) Internal Distribution Module (IDM) The IDM handles the distribution and fusing of the system voltage (+24 VDC) to the units in the cabinet. There is a connector for connection of ESD bracelet and instrument electrical earth on the IDM. Double Transceiver Unit (dTRU) The dTRU is a two-transceiver Replaceable Unit. Up to six dTRU units can be installed in one RBS 2106 cabinet, enabling up to 12 TRXs per cabinet. Figure 4. Double Transceiver Unit.
PAGE 469
Product Description 9 (33) Configuration Switch Unit (CXU) The task of the CXU is to cross connect between the CDU and the dTRU in the receiving path. The CXU makes it possible to expand or reconfigure a cabinet without moving or replacing any RX cables. Figure 5. Configuration Switch Unit. The RX inputs/outputs on the dTRU and the CDU are placed in such positions that they minimise the amount of cable types for connecting the CXU with the dTRU/CDU.
PAGE 470
Product Description 10 (33) AC connection unit and BFU The ACCU handles the distribution and connection of the incoming power supply voltages 200-250 VAC to the PSU´s and climate unit. The BFU supervises and connects/disconnects the batteries at low voltage. Transient and lightning protection RBS 2106 is equipped with transient and lightning protection, located in the connection boxes. Climate Unit (CU) and FCU The climate unit maintains the internal temperature in the cabinet.
PAGE 471
Product Description 11 (33) The RBS 2106 cabinet • • • • Outdoor specified. Supports up to six double transceiver units (12 TRX’s) per cabinet. One cabinet can be configured as a one, two or three sector cell configuration. The cabinet fulfils seismic requirements Figure 7. RBS 2106 cabinet. All units in the cabinet are easily accessible from the front of the cabinet.
PAGE 472
Product Description 12 (33) 3 Technical Specification 3.1 Mechanical Dimensions Table 1. Mechanical Dimensions. Quantity 3.2 Value (mm) Height 1614 Width 1300 Depth (inclusive door of 230 mm) 940 Footprint (Depth) 710 Weight Table 2. Weight. Unit 3.3 Weight (kg) Fully equipped cabinet incl. batteries. 590 Fully equipped cabinet excl. batteries. 550 Power Requirements Table 3. Power Requirements.
PAGE 473
Product Description 13 (33) 3.5 Colour The RBS 2106 will have same colours, which are used on the RBS 2102. Table 4. Colours Colour Grey Green 3.6 Reference Number RAL 7035 NCS 8010-G 10Y Ericsson Number MZY 543 03/8119 MZY 543 03/685 Electromagnetic Compatibility (EMC) All RBS 2106 models fulfils the Electromagnetic Compatibility (EMC) requirements according to: • ETS 300 342-2, the BTS product standard, in line with the European EMC Directive 89/336/EEC.
PAGE 474
Product Description 14 (33) 3.8 Battery Backup and BFU In the cabinet a Battery Fuse Unit, BFU, is installed. The BFU supervises and connects/disconnects the batteries at low voltage. It is possible to chose between internal and external battery backup. Both cannot be used at the same time. Internal battery backup Flexible 6-12 HE can be used for battery backup inside the cabinet. The BB is 6 HE and the transmission box is also 6HE.
PAGE 475
Product Description 15 (33) 3.9 Transmission All RBS 2000 models support multi-drop bypass functionality. Each RBS can be configured for stand alone or linear cascade mode. The configuration is performed by means of the OMT. LAPD concentration and LAPD multiplexing could be used to make the transmission resource more efficient. The DXU-21 is equipped with four external ports supporting in total up to 8 Mbit/s. Interfaces • T1/1.
PAGE 476
Product Description 16 (33) The Mini-DXC or DXX plug-in has the functionality of a Mini-DXC / DXX node, a combination of Cross-connect, Control and G.703 interface units. The TM-box (6HE) in the bottom of the cabinet can house customer specific transmission equipment. If no internal batteries are used, additional customer specific transmission equipment can be placed in the internal battery box. This gives a total space of 12HE.
PAGE 477
Product Description 17 (33) Transportation Requirements The RBS 2106 complies with ETS class 2.3 Public Transportation in ETS 300 019-1-2. Earthquake Protection The RBS 2106 is designed to fulfil earthquake protection according to IEC 68-2-57. In-Use Requirements The RBS 2106 is designed for normal operation in the climate conditions of class 4.1 of IEC 721-3-4 (ETS 300 019-1-4). Temperature range: -33 ºC up to +45 ºC, Relative humidity: 15 to 100 %. SRN/X-00:146 Rev B 2001-05-16 © Ericsson.
PAGE 478
Product Description 18 (33) 4 GSM 800 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. 4.1 System Data Receiver: Transmitter: Carrier bandwidth: Channels per carrier: Modulation method: Duplex Separation: 824 to 849 MHz 869 to 894 MHz 200 kHz 8 full rate channels GMSK, EDGE-dTRU handles both GMSK and 8-PSK 45 MHz The RBS output power is dynamically controlled.
PAGE 479
Product Description 19 (33) 4.2 CDU-types for GSM 800 CDU-G 800 TX/RX CXU TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA DPX Sector 1 TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX TX/RX TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 2 DPX TX/RX CDU-G TXCout dTRU RXin1 TX2 RXout2 RXin2 TXCout dTRU RXDA CDUDPX G TX/RX TX1 RXin1 RXout1 RXin2 RXDA Sector 3 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX Figure 8.
PAGE 480
Product Description 20 (33) The CDU-G 800 MHz main characteristics are: • • • • • • • Up to 4 TRXs per two antennas (two physical antennas) or one dual polarised. No limitations on frequency planning. Required frequency separation is 400 kHz (due to GSM specification). Synthesiser and base band frequency hopping are supported. Configurations with and without hybrid combination are possible (with the same HW). Maximum 12 TRXs per cabinet when the hybrids in the dTRUs are used.
PAGE 481
Product Description 21 (33) 4.3 GSM 800 Configurations The configurations are the maximum configurations within a given number of CDUs. The single cell configuration can be duplicated or triplicated to form multicell configurations by for instance utilising the Multi Drop functionality. Table 5. Configurations for GSM 800 with CDU-G without hybrids used in the dTRUs. Max Config 1x2 2x2 3x2 No. of cabinets 1 1 1 TMA Opt. Opt. Opt.
PAGE 482
Product Description 22 (33) 5 GSM 900 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. 5.1 System Data Receiver: Transmitter: Carrier bandwidth: Channels per carrier: Modulation method: Duplex Separation: 880 to 915 MHz (E-GSM) 925 to 960 MHz (E-GSM) 200 kHz 8 full rate channels GMSK, EDGE-dTRU handles both GMSK and 8-PSK 45 MHz The RBS output power is dynamically controlled.
PAGE 483
Product Description 23 (33) 5.2 CDU-types for GSM 900 CDU-G 900 TX/RX CXU TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA DPX Sector 1 TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX TX/RX TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 2 DPX TX/RX CDU-G TXCout dTRU RXin1 TX2 RXout2 RXin2 TXCout dTRU RXDA CDUDPX G TX/RX TX1 RXin1 RXout1 RXin2 RXDA Sector 3 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX Figure 8.
PAGE 484
Product Description 24 (33) The CDU-G 900 MHz main characteristics are: • • • • • • • Up to 4 TRX’s per two antennas (two physical antennas) or one dual polarised. No limitations on frequency planning. Required frequency separation is 400 kHz (due to GSM specification). Synthesiser and base band frequency hopping are supported. Configurations with and without hybrid combination are possible (with the same HW). Maximum 12 TRX’s per cabinet when the hybrids in the dTRU’s are used.
PAGE 485
Product Description 25 (33) CDU-F 900 CXU dTRU TXout1 TX1 RXin1 TX2 CDU-F Odd TRU RXin2 TX/RX TXout2 TXout1 dTRU TX1 TX2 RXin1 Even TRU DPX RXin2 TXout2 RXout1 LNA TXout1 dTRU TX1 RXin1 TX2 RXin2 CDU-F Odd TRU TXout2 TXout1 dTRU TX1 RXin1 TX2 RXin2 Even TRU TXout2 TXout1 RXin1 dTRU CDU-F TX1 RXin2 TX2 Odd TRU TXout2 TX/RX TXout1 TX1 RXin1 dTRU TX2 RXin2 Even TRU DPX TXout2 RXout1 LNA Figure 9.
PAGE 486
Product Description 26 (33) 5.3 GSM 900 Configurations The configurations are the maximum configurations within a given number of CDU’s. The single cell configuration can be duplicated or triplicated to form multicell configurations by for instance utilising the Multi Drop functionality. Table 7. Configurations for GSM 900 with CDU-G without hybrids used in the dTRU’s. Max Config 1x2 2x2 3x2 No. of cabinets 1 1 1 TMA Opt. Opt. Opt.
PAGE 487
Product Description 27 (33) 6 GSM 1800 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. 6.1 System Data Receiver: Transmitter: Carrier bandwidth: Channels per carrier: Modulation method: Duplex Separation: 1710 to 1785 MHz 1805 to 1880 MHz 200 kHz 8 full rate channels GMSK, EDGE-dTRU handles both GMSK and 8-PSK 95 MHz The RBS output power is dynamically controlled.
PAGE 488
Product Description 28 (33) 6.2 CDU-types for GSM 1800 CDU-G 1800 TX/RX CXU TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 1 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX TX/RX TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 2 DPX TX/RX CDU-G TXCout dTRU RXin1 TX2 RXout2 RXin2 TXCout dTRU RXDA CDUDPX G TX/RX TX1 RXin1 RXout1 RXin2 RXDA Sector 3 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX Figure 10.
PAGE 489
Product Description 29 (33) The CDU-G 1800 MHz main characteristics are: • • • • • • • Up to 4 TRX’s per two antennas (two physical antennas) or one dual polarised. No limitations on frequency planning. Required frequency separation is 400 kHz (due to GSM specification). Synthesiser and base band frequency hopping are supported. Configurations with and without hybrid combination are possible (with the same HW). Maximum 12 TRX’s per cabinet when the hybrids in the dTRU’s are used.
PAGE 490
Product Description 30 (33) CDU-F 1800 CXU dTRU TXout1 TX1 RXin1 TX2 CDU-F Odd TRU RXin2 TX/RX TXout2 TXout1 dTRU RXin1 TX1 TX2 Even TRU DPX RXin2 TXout2 RXout1 LNA TXout1 dTRU RXin1 RXin2 TX1 TX2 CDU-F Odd TRU TXout2 TXout1 dTRU TX1 RXin1 RXin2 TX2 Even TRU TXout2 TXout1 RXin1 dTRU RXin2 CDU-F TX1 TX2 Odd TRU TXout2 TX/RX TXout1 RXin1 dTRU RXin2 TX1 TX2 Even TRU DPX TXout2 RXout1 LNA Figure 11.
PAGE 491
Product Description 31 (33) 6.3 GSM 1800 MHz Configurations The configurations are the maximum configurations within a given number of CDU’s. The single cell configuration can be duplicated or triplicated to form multicell configurations by for instance utilising the Multi Drop functionality. Table 10. Configurations for GSM 1800 with CDU-G without hybrids used in the dTRU’s (uncombined mode). Max Config 1x2 2x2 3x2 No. of cabinets 1 1 1 TMA Opt. Opt. Opt.
PAGE 492
Product Description 32 (33) 7 GSM 1900 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. 7.1 System Data Receiver: Transmitter: Carrier bandwidth: Channels per carrier: Modulation method: Duplex Separation: 1850 to 1910 MHz 1930 to 1990 MHz 200 kHz 8 full rate channels GMSK, EDGE-dTRU handles both GMSK and 8-PSK 80 MHz The RBS output power is dynamically controlled.
PAGE 493
Product Description 33 (33) 7.2 CDU-types for GSM 1900 CDU-G 1900 TX/RX CXU TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 1 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX TX/RX TXCout dTRU TX1 RXin1 RXout1 RXin2 RXDA Sector 2 DPX TX/RX CDU-G TXCout dTRU RXin1 TX2 RXout2 RXin2 TXCout dTRU RXDA CDUDPX G TX/RX TX1 RXin1 RXout1 RXin2 RXDA Sector 3 DPX TX/RX CDU-G TXCout dTRU TX2 RXin1 RXout2 RXin2 RXDA DPX Figure 12.
PAGE 494
Product Description 34 (33) The CDU-G 1900 MHz main characteristics are: • • • • • • • Up to 4 TRX’s per two antennas (two physical antennas) or one dual polarised. No limitations on frequency planning. Required frequency separation is 400 kHz (due to GSM specification). Synthesiser and base band frequency hopping are supported. Configurations with and without hybrid combination are possible (with the same HW). Maximum 12 TRX’s per cabinet when the hybrids in the dTRU’s are used.
PAGE 495
Product Description 35 (33) 7.3 GSM 1900 MHz Configurations The configurations are the maximum configurations within a given number of CDU’s. The single cell configuration can be duplicated or triplicated to form multicell configurations by for instance utilising the Multi Drop functionality. Table 13. Configurations for GSM 1900 with CDU-G without hybrids used in the dTRU’s (uncombined mode). Max Config 1x2 2x2 3x2 No. of cabinets 1 1 1 TMA Opt. Opt. Opt.
PAGE 496
Product Description 36 (33) 8 Dual Band GSM 900/1800 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. The Dual Band BTS comprises equipment for both GSM 900 and GSM 1800. 8.1 System Data The System Data, for the Dual Band RBS are the same as for the GSM 900 and the GSM 1800. 8.2 Configurations Dual Band RBS Table 15. Configurations for Dual band with CDU-G.
PAGE 497
Product Description 37 (33) 9 Dual Band GSM 800/1900 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. The Dual Band BTS comprises equipment for both GSM 800 and GSM 1900. 9.1 System Data The System Data for the Dual Band RBS are the same as for the GSM 800 and the GSM 1900. 9.2 Configurations Dual Band RBS Table 17. Configurations for Dual band with CDU-G.
PAGE 498
Product Description 38 (33) 10 Dual Band GSM 800/1800 Radio Specification The operating specifications of the radio equipment will in most cases exceed the performance requirements specified in the GSM Technical Specifications. The Dual Band BTS comprises equipment for both GSM 800 and GSM 1800. 10.1 System Data The System Data for the Dual Band RBS are the same as for the GSM 800 and the GSM 1800. 10.2 Configurations Dual Band RBS Table 18. Configurations for Dual band with CDU-G.
PAGE 499
Product Description 39 (33) 11 Acronyms and Abbreviations ACCU AO BCCH BDM BFU BSC BSS BTS CDU CXU dB dBm DTX DUPL DXU DXX EACU ECU ECSD EDGE LED LTE Mbit/s MCU AC Connection Unit Application Object Broadcast Control Channel Battery Distribution Module Battery Fuse Unit Base Station Controller Base Station System Base Transceiver Station Combining and Distribution Unit Configuration Switch Unit Decibel Decibel relative to 1 milliwatt Discontinuous Transmission Duplex Distribution Switch Unit digital cro