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Unit Description, DXU-21

7

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.

7.1

System Environment

The DXU-21 is designed to work in RBS 2000 Macro radio base
stations.

This block diagram shows DXU-21 in the RBS 2206 system
environment.

OXU

DXU

d

T

R

U

d

T

R

U

d

T

R

U

d

T

R

U

d

T

R

U

d

T

R

U

CDU

CDU

CXU

PSU
FAN

Cabinet LEDs

EPC-

bus

External alarms
ESB

Transmission lines

IOM-

bus

Y-links

P007455C

Option BFU

CDU

OMT

GPS

EOM

Cabinet ID

Figure 84

DXU-21 environment

EN/LZT 720 0008

P2A

2001-11-28

147 (485)

© Ericsson Radio Systems AB

— All Rights Reserved —

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Summary of Contents for RBS 2106

Page 1: ...EN LZT 720 0008 P2A P007551A Ericsson GSM System BSS R8 RBS 2106 RBS 2206 Reference Manual P r e l i m i n a r y ...

Page 2: ...P r e l i m i n a r y ...

Page 3: ... RBS 2206 Reference Manual RBS 2106 RBS 2206 Reference Manual Ericsson Radio Systems AB All Rights Reserved EN LZT 720 0008 P2A 2001 11 28 1 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 4: ...ue to continued progress in methodology design and manufacturing the contents of this document are subject to revision without notice 2 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 5: ...C 70 C 25 3 7 Operation Indoor 5 C 40 C 25 3 8 Operation Outdoor 33 C 40 C 27 3 9 Operation Outdoor 33 C 45 C 28 3 10 Operation Outdoor 33 C 55 C 30 3 11 Operation Mast Mounted Equipment 33 C 45 C 30 3 12 Operation Mast Mounted Equipment 33 C 55 C 30 4 Radio Configurations RBS 2106 and RBS 2206 33 4 1 Introduction 33 4 2 References 34 4 3 Definitions 34 4 4 Frequency Bands 36 4 5 Basic Configurati...

Page 6: ...escription 114 6 5 External Alarm and Transmission Interface 123 6 6 BBS 2000 Rack Description 127 6 7 Antenna System 129 7 Unit Description DXU 21 147 7 1 System Environment 147 7 2 Block Diagram 148 7 3 Functions 150 7 4 External Interfaces 150 7 5 Dimensions and Weight 154 8 Unit Description dTRU 155 8 1 Block Diagram 155 8 2 Functions 156 8 3 External Interfaces 157 8 4 Technical Data 158 9 Un...

Page 7: ... 12 1 Block Diagram 171 12 2 Functions 173 12 3 External Interfaces 174 12 4 Technical Data 176 13 Unit Description FCU 01 179 13 1 Functions 179 13 2 External Interfaces 179 13 3 Indicator 180 13 4 Electrical Data 180 14 Unit Description DC Filter 01 183 14 1 Functions 183 14 2 External Interfaces 183 14 3 Input Data 183 14 4 Dimensions and Weight 184 15 Unit Description PSU 1200 W 185 15 1 PSU A...

Page 8: ...tion IDM 211 19 1 Functions 211 19 2 External Interfaces 211 19 3 Indicators and Buttons 212 19 4 Input Data 212 19 5 Output Data 212 19 6 Dimensions and Weight 213 20 Unit Description RBS 2106 Climate Unit 215 20 1 Combined Climate Unit 215 20 2 Air to Air Heat Exchanger 221 21 Broadcast 223 21 1 References 223 21 2 Concepts 223 21 3 Functions 223 22 Common Control Channel Handling 229 22 1 Refer...

Page 9: ...256 26 4 Asynchronous Handover Detection 257 26 5 RF Channel Release 259 26 6 Deactivate SACCH 260 26 7 Link Establish Indication 260 26 8 Link Release Indication 262 26 9 Link Establishment Request 263 26 10 Link Release Request 263 26 11 Transparent Message Transmission 264 26 12 Transparent Message Reception 265 26 13 SACCH Info Modify 266 26 14 LAPDm 267 26 15 Channel Reactivation 268 26 16 Po...

Page 10: ...ctions 285 31 Frequency Hopping 289 31 1 References 289 31 2 Concepts 289 31 3 Function 289 31 4 Operational Conditions 290 32 Encryption 291 32 1 References 291 32 2 Start Encryption at Channel Activation 291 32 3 Encryption Mode Change 292 32 4 Encryption Mode Change at Mode Modify 293 33 Mode Modify 295 33 1 References 295 33 2 Function 295 33 3 Operational Conditions 298 34 Mobile Station Powe...

Page 11: ...of the Reference Source 312 37 5 Hold Over Operation 313 37 6 Supervision of Reference Source 314 37 7 Locking to the Reference Source 315 37 8 FN Offset 316 37 9 ESB Distribution 316 37 10 Timing Compensation 316 38 Radio Reception 319 38 1 References 319 38 2 Radio Reception 319 38 3 Diversity 319 39 Radio Transmission 321 39 1 References 321 39 2 Concepts 322 39 3 Functions 323 39 4 Operational...

Page 12: ...3 3 Functions 340 43 4 Operational Conditions 343 44 Operation and Maintenance Support 345 44 1 References 345 44 2 Concepts 345 44 3 Buttons 347 44 4 Change RU to Local Mode 347 44 5 Change RU to Remote Mode 348 44 6 Change RU to Remote Mode Cancel 349 44 7 Change SW Power Boost Slave RU to Local Mode 349 44 8 Loop Control 350 44 9 RF Loop Test Supervision 350 44 10 Calendar Time Request 351 44 1...

Page 13: ... Installation Data Handling 363 45 1 References 363 45 2 Concepts 363 45 3 General 363 45 4 Database Information Handling Elements 363 45 5 Functions 365 45 6 Operational Conditions 365 46 Self Test and Supervision 367 46 1 References 367 46 2 Concepts 367 46 3 Self Test 367 46 4 Supervision of Memory 368 47 Diagnostics and Fault Handling 377 47 1 References 377 47 2 Concepts 377 47 3 Fault Detect...

Page 14: ...97 50 2 Concepts 397 50 3 Function 397 50 4 Operational Conditions 398 51 Climate Protection 398 51 1 Concepts 399 51 2 Functions 399 52 EMC Capabilities 403 52 1 References 403 52 2 Concepts 404 52 3 Capabilities 405 53 Transmission Interface Handling G 703 2048 kbit s 411 53 1 References 411 53 2 Concepts 411 53 3 Functions 413 53 4 Operational Conditions 421 54 Transmission Interface Handling D...

Page 15: ...6 3 Functions 438 56 4 Operational conditions 445 57 Transport network O M functions DXX Support 447 57 1 Introduction 447 57 2 References 448 57 3 Concepts 449 57 4 Functions 450 57 5 Operational conditions 460 58 BTS Parameter Limitations 461 58 1 Purpose and Readers 461 58 2 References 461 58 3 Parameters 461 58 4 Appendix 467 59 Glossary 469 EN LZT 720 0008 P2A 2001 11 28 13 485 Ericsson Radio...

Page 16: ...RBS 2106 RBS 2206 Reference Manual This page is intentionally left blank 14 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 17: ...onfigurations Unit descriptions chapters 6 14 Function Specifications chapters 15 51 Provide detailed information about the RBS from a functional point of view The Function Specifications are customer adapted and give a deeper understanding of the behaviour of the RBS BTS Parameter Limitations chapter 52 State configurable BTS parameters for RBS 2000 BTS parameters with limitations compared with t...

Page 18: ...e business site See access information below How to Obtain Access to the Extranet Access is granted by the Key Account Manager KAM from your local Ericsson company The Extranet address is https ebusiness ericsson net To be able to access the Extranet site you need to ensure that your company allows access to secure sites HTTPS through its firewall your PC has either Microsoft Internet Explorer 4 0...

Page 19: ...csson s firewall can get more information about Extranet access from the following address http inside ericsson se ebusiness 1 5 R1A to P2A Table 1 Chapter Chapter Heading Revised Sections and Subsections Changes General RBS 2106 has been added General GSM 800 has been added valid from BSS R9 1 Preface 1 3 Outdoor RBS has been deleted 1 3 Figure 1 has been updated 4 Radio Configurations RBS 2106 a...

Page 20: ...Preface This page is intentionally left blank 18 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 21: ...ssional Video and Audio Equipment UL 1950 Safety of Information Technology Equipment Including Electrical Business Equipment 2 2 Product Safety This part of the document defines the Electrical Mechanical Heat and Fire Safety Requirements for the Radio Base Station General The RBS is designed to comply with the following International Standards 73 23 EEC Low Voltage Directive To achieve this the RB...

Page 22: ...s mechanical hazards in the equipment as well as mechanical hazards in the meaning of the applicable standard For the US the following standards are applicable UL 1950 Safety of Information Technology Equipment Including Electrical Business Equipment For Canada the following standards are applicable CAN CSA C22 2 No 1 M94 Audio Video and Similar Electronic Equipment 2 2 1 Declaration of Conformity...

Page 23: ... automatically be achieved Safe function refers to an operation period of not more than 72 consecutive hours and a total of not more than 15 days in one year Non destruction Environmental stress above the limits for safe function during which no function is guaranteed and performance may degrade in an unspecified manner When the environmental stress has dropped to normal operation conditions no ma...

Page 24: ...everity levels are chosen with equipped cabinets in mind Therefore transport of equipment outside the cabinets can result in extremes These extremes shall be handled by its own packing 3 4 2 Climatic conditions During transportation the equipment could be exposed to extremes in temperature and humidity The equipment shall be packaged The equipment shall be operational after being subjected to the ...

Page 25: ...equirements Table 3 Environmental Parameters Unit Value Vibration sinus displacement mm 3 5 acceleration m s 10 15 frequency Hz 2 9 9 200 200 500 Random ASD m 2 s 3 1 0 acceleration m s 12 0 frequency Hz 2 200 Shock peak acceleration m s 100 duration ms 11 3 5 Storage 25 C 55 C 3 5 1 General Conditions The severity of the requirements is in conformity with IEC 721 3 1 classes 1K4 1Z2 1Z3 1Z5 1B2 1...

Page 26: ...he contaminants is dominant at each site and that the other is present in insignificant amounts 3 5 5 Mechanically Active Substances The severity of these requirements is in conformity with IEC 721 3 1 class 1S3 and ETS 300 019 1 1 Class 1 2 3 5 6 Mechanical Conditions The packing and transport method shall be chosen in order not to expose the equipment to stress beyond these limits The equipment ...

Page 27: ...conditions The equipment shall endure stresses normal for handling during handling the equipment withstand the conditions stated in Section 3 4 6 on page 23in this document 3 7 Operation Indoor 5 C 40 C 3 7 1 General Conditions The severity of these requirements is in conformity with IEC 721 3 3 classes 3K3 3Z2 3Z4 3B1 3C2 3C1 3S2 3M1 and ETS 300 019 1 3 Class 3 1 TEMPERATURE controlled locations ...

Page 28: ... in conformity with IEC 721 3 3 classes 3C2 3C1 and ETS 300 019 1 3 Class 3 1 Note 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 3 7 5 Mechanically active substances The severity of these requirements is in conformity with IEC 721 3 3 class...

Page 29: ... shall be tested for seismic exposure Deviations shall be reported Safe function during seismic exposure Deviations shall be reported Table 8 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 If necessary there are possibilities to equip the RB...

Page 30: ...tallation and operation Table 9 Environmental Unit Value Parameters Normal Condition Non Destr Temperature C 33 45 40 70 Relative Humidity 15 100 15 100 3 9 2 Biological Conditions The severity of these requirements is in conformity with IEC 721 3 4 class 4B1 and ETS 300 019 1 4 Class 4 1 3 9 3 Chemically Active Substances The severity of these requirements is in conformity with IEC 721 3 4 classe...

Page 31: ...acceleration m s 250 100 3 duration ms 6 6 pulse shape half sine no of shock pulses 500 per direction no of test directions 6 testing method IEC 68 2 27 1 Safe function 2 Non destruction 3 These requirements belong to Safe function with the exemption performance of the RBS shall be verified as no loss of calls Seismic Exposure The complete equipped RBS shall be tested for seismic exposure Deviatio...

Page 32: ...d Equipment 33 C 45 C This Environmental class corresponds to Operation Outdoor 33 C 45 C with the exceptions stated below Table 12 Environmental Parameters Unit Value Normal Cond Non destruct Temperature C 33 45 40 70 Change of temperature C min 6 6 Vibration sinus displacement mm 3 0 acceleration m s 2 10 frequency Hz 2 9 9 200 Vibration random ASD m 2 s 3 0 5 frequency Hz 2 200 duration of expo...

Page 33: ...5 5 Vibration sinus displacement mm 3 acceleration m s 2 10 frequency Hz 2 9 9 200 Vibration random ASD m 2 s 3 0 5 0 2 frequency Hz 2 200 200 500 Shock peak acc m s 2 100 1 duration ms 11 Fauna none Not Appl Not Appl 1 The requirements belong to Safe function with the exemption performance of the RBS shall be verified as no loss of calls EN LZT 720 0008 P2A 2001 11 28 31 485 Ericsson Radio System...

Page 34: ...Environmental Capabilities This page is intentionally left blank 32 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 35: ... Controller BSC and the Base Transceiver Station BTS The BSC handles radio related functions such as handover management of the radio network resources and cell configuration data It also controls radio frequency power levels in RBSs and MSs The BTS is a network component which serves one cell and is controlled by the BSC The BTS contains a number of transceivers It consists of the radio transceiv...

Page 36: ...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 one channel The TMA used for 12 TRX products is Dual Duplex TMA ddTMA Some configurations can use a TMA designed for reception only rTMA Antenna Referenc...

Page 37: ... connected to one antenna system A basic configuration can be multiplied or used in combination with other basic configurations to build the needed site equipment Variations of a basic configuration may exist differing in cable lengths This depends on factors such as implementation in different cabinets Radio Base Station RBS An RBS is all equipment in an Ericsson base station and may be comprised...

Page 38: ...hows how a basic configuration identity is constructed 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 G9deht_3 6 5 a Figure 5 Basic configuration identity 4 4 Frequency Bands GSM 800 Uplink 824 849 MHz Downlink 869 894 MHz...

Page 39: ...gnal paths for various configurations are shown in Figure 6 on page 38 upto and including Figure 24 on page 66 Only components necessary to illustrate the configuration are shown In some configurations the radio signal paths can differ depending on where in the cabinet the basic configuration is used The figures show fully equipped cabinets with two or three BTSs that is two or three basic configu...

Page 40: ...RX RX RX RX RX2 TX1 TX TX HC2 Hybrid combiner RX2 TX2 TX1 TX2 HC1 RX RX RX RX RX1 RX4 RX3 RX RX RX RX dTRU with no hybrid combiner in use dTRU with hybrid combiner in use Figure 6 dTRU with and without hybrid combiner in use 38 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 41: ...OMB FCOMB RX2 TX2 CXU RX1 RX2 LNA LNA TX RXA Ant RXB P007376A X X Figure 7 F9de_2 4 and F18d_2 4 Characteristics Number of CDUs 1 Frequency band E GSM F9de_2 4 GSM 1800 F18d_2 4 Max number of TRXs 4 Number of feeders 2 Number of antennas 2 Antenna configuration TX RX RX EN LZT 720 0008 P2A 2001 11 28 39 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 42: ...P007377A X DPX DPX LNA X DPX DPX LNA RXB Figure 8 F9det_2 4 and F18dt_2 4 Characteristics Number of CDUs 1 Frequency band E GSM F9det_2 4 GSM 1800 F18dt_2 4 Max number of TRXs 4 Number of feeders 2 Number of antennas 2 Antenna configuration TX RX RX TMA configuration ddTMA ddTMA or ddTMA rTMA 40 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 43: ...2 LNA LNA TX RXA Ant RXB X X TX1 RX1 RX2 TX2 TX1 dTRU RX1 dTRU RX2 TX2 BTS2 BTS1 TX1 TX2 TX1 TX2 CDU F FCOMB TX1 RX1 RX2 TX2 TX1 dTRU TX1 TX2 TX1 TX2 RX1 dTRU CDU F DPX FCOMB RX2 TX2 CXU RX1 RX2 LNA LNA TX RXA Ant RXB X X FCOMB FCOMB FCOMB Figure 9 F9de_2 6 and F18d_2 6 EN LZT 720 0008 P2A 2001 11 28 41 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 44: ...eeders 2 Number of antennas 2 Antenna configuration TX RX RX Three CDU Fs support two sectors Note 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 42 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 45: ... TX2 TX1 dTRU RX1 dTRU RX2 TX2 BTS2 BTS1 TX1 TX2 TX1 TX2 CDU F FCOMB FCOMB TX1 RX1 RX2 TX2 TX1 dTRU TX1 TX2 TX1 TX2 RX1 dTRU CDU F DPX FCOMB RX2 TX2 CXU RX1 RX2 LNA LNA TX RXA X DPX DPX LNA X DPX DPX LNA RXB TX RXA X DPX DPX LNA X DPX DPX LNA RXB FCOMB FCOMB Figure 10 F9det_2 6 and F18dt_2 6 EN LZT 720 0008 P2A 2001 11 28 43 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 46: ...tennas 2 Antenna configuration TX RX RX TMA configuration ddTMA ddTMA or ddTMA rTMA Three CDU Fs support two sectors Note 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 44 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 47: ...2 TX1 TX2 RX1 dTRU CDU F DPX FCOMB FCOMB RX2 TX2 CXU RX1 LNA TX RXB P007380A X TX1 RX1 RX2 TX2 TX1 dTRU TX1 TX2 TX1 TX2 RX1 dTRU CDU F DPX FCOMB FCOMB RX2 TX2 RX1 LNA TX RXA Ant X Figure 11 F9de_2 8 and F18d_2 8 EN LZT 720 0008 P2A 2001 11 28 45 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 48: ...ber of CDUs 2 Frequency band E GSM F9de_2 8 GSM 1800 F18d_2 8 Max number of TRXs 8 Number of feeders 2 Number of antennas 2 Antenna configuration TX RX TX RX 46 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 49: ...dTRU CDU F DPX FCOMB FCOMB RX2 TX2 CXU RX1 LNA P007381A TX1 RX1 RX2 TX2 TX1 dTRU TX1 TX2 TX1 TX2 RX1 dTRU CDU F DPX FCOMB FCOMB RX2 TX2 RX1 LNA Ant TX RXB X DPX DPX LNA Ant TX RXA X DPX DPX LNA Figure 12 F9det_2 8 and F18dt_2 8 EN LZT 720 0008 P2A 2001 11 28 47 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 50: ...equency band E GSM F9det_2 8 GSM 1800 F18dt_2 8 Max number of TRXs 8 Number of feeders 2 Number of antennas 2 Antenna configuration TX RX TX RX TMA configuration ddTMA ddTMA 48 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 51: ... RX2 TX2 RX1 LNA TX RXA Ant X P007382A TX1 RX1 RX2 TX2 TX1 dTRU RX1 dTRU RX2 TX2 TX1 TX2 TX1 TX2 CDU F FCOMB FCOMB TX1 RX1 RX2 TX2 TX1 dTRU TX1 TX2 TX1 TX2 RX1 dTRU CDU F DPX FCOMB FCOMB RX2 TX2 CXU RX1 LNA TX RXA Ant X Figure 13 F9de_2 12 and F18d_2 12 EN LZT 720 0008 P2A 2001 11 28 49 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 52: ...er of CDUs 3 Frequency band E GSM F9de_2 12 GSM 1800 F18d_2 12 Max number of TRXs 12 Number of feeders 2 Number of antennas 2 Antenna configuration TX RX TX RX 50 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 53: ...X2 TX2 RX1 LNA TX1 RX1 RX2 TX2 TX1 dTRU RX1 dTRU RX2 TX2 CDU F FCOMB FCOMB TX1 RX1 RX2 TX2 TX1 dTRU TX1 TX2 TX1 TX2 RX1 dTRU CDU F DPX FCOMB FCOMB RX2 TX2 CXU RX1 LNA Ant TX RXA X DPX DPX LNA TX RXB X DPX DPX LNA Ant TX1 TX2 TX1 TX2 Figure 14 F9de_2 12 and F18dt_2 12 EN LZT 720 0008 P2A 2001 11 28 51 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 54: ...de_2 2 G18d_2 2 and G19d_2 2 TX1 RX1 RX2 TX2 dTRU TX1 RX1 TX2 CDU G DPX CXU LNA TX RXA Ant P007384B DPX TX RXB RX2 LNA X X ASU Ant S1 3 5 Ant S2 4 6 Figure 15 Gd8_2 2 G9de_2 2 G18d_2 2 and G19d_2 2 Characteristics Number of CDUs 1 Frequency band GSM 800 G8d_2 2 E GSM G9de_2 2 GSM 1800 G18d_2 2 GSM 1900 G19d_2 2 Max number of TRXs 2 Number of feeders 2 Number of antennas 2 Antenna configuration TX ...

Page 55: ... Ant S2 4 6 DPX LNA DPX DPX LNA DPX ddTMA Figure 16 G8dt_2 2 G9det_2 2 G18dt_2 2 and G19dt_2 2 Characteristics Number of CDUs 1 Frequency band GSM 800 G8dt_2 2 E GSM G9det_2 2 GSM 1800 G18dt_2 2 GSM 1900 G19dt_2 2 Max number of TRXs 2 Number of feeders 2 Number of antennas 2 Antenna configuration TX RX TX RX Note The ASU is optional equipment EN LZT 720 0008 P2A 2001 11 28 53 485 Ericsson Radio Sy...

Page 56: ... Ant X TX RXB X ASU Figure 17 G8dh_2 4 G9deh_2 4 G18dh_2 4 and G19dh_2 4 Characteristics Number of CDUs 1 Frequency band GSM 800 G8dh_2 4 E GSM G9deh_2 4 GSM 1800 G18dh_2 4 GSM 1900 G19dh_2 4 Max number of TRXs 4 Number of feeders 2 Number of antennas 2 Antenna configuration TX RX TX RX Note The ASU is optional equipment 54 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Re...

Page 57: ...2 dTRU TX2 ASU DPX LNA DPX ddTMA Figure 18 G8dht_2 4 G9deht_2 4 G18dht_2 4 and G19dht_2 4 Characteristics Number of CDUs 1 Frequency band GSM 800 G8dht_2 4 E GSM G9deht_2 4 GSM 1800 G18dht_2 4 GSM 1900 G19dht_2 4 Max number of TRXs 4 Number of feeders 2 Number of antennas 2 Antenna configuration TX RX TX RX Note The ASU is optional equipment EN LZT 720 0008 P2A 2001 11 28 55 485 Ericsson Radio Sys...

Page 58: ...TX1 TX2 RX1 RX2 dTRU TX1 CDU G DPX LNA TX Ant DPX TX LNA RX1 RX2 dTRU TX2 TX1 TX2 RX1 RX2 dTRU TX1 RX1 CDU G DPX CXU LNA TX RXA Ant DPX TX RXB RX2 LNA TX1 TX2 RX1 RX2 dTRU TX2 BTS2 BTS1 TX1 TX2 X X X X X X P007388B Ant S1 Ant S6 Ant S2 Ant S5 ASU Figure 19 G8dh_3 6 G9deh_3 6 G18dh_3 6 and G19dh_3 6 56 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n ...

Page 59: ...ders 3 Number of antennas 3 Antenna configuration TX RX TX RX TX Three CDU Fs support two sectors Note 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 Note The ASU is optional equipment EN LZT 720 0008 P2A 2001 11 28 57 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 60: ...X LNA RX1 RX2 dTRU TX2 TX1 TX2 RX1 RX2 dTRU TX1 RX1 CDU G DPX CXU LNA DPX RX2 LNA TX1 TX2 RX1 RX2 dTRU TX2 BTS2 BTS1 TX1 TX2 X X P007389B Ant S1 Ant S6 Ant S2 Ant S5 ASU TX RXA Ant TX RXB X X DPX LNA DPX Ant DPX LNA DPX ddTMA TX RXA Ant TX RXB X X DPX LNA DPX DPX LNA DPX ddTMA Figure 20 G8dht_3 6 G9deht_3 6 G18dh_3 6 and G19dh_3 6 58 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All...

Page 61: ... of antennas 3 Antenna configuration TX RX TX RX TX TMA configuration ddTMA ddTMA Three CDU Fs support two sectors Note 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 Note The ASU is optional equipment EN LZT 720 0008 P2A 2001 11 28 59 485 Ericsson Radio Systems AB All Rights Reserved P r e l...

Page 62: ...X LNA DPX LNA TX1 TX2 RX1 RX2 dTRU TX2 TX1 TX2 RX1 RX2 dTRU TX1 RX1 CDU G DPX LNA TX Ant DPX LNA TX1 TX2 RX1 RX2 dTRU TX2 CXU TX RXB TX Ant TX RXB X X X X P007390B ASU Ant S3 5 Ant S1 3 Figure 21 G8dh_4 8 G9deh_4 8 G18dh_4 8 and G19dh_4 8 60 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 63: ...dh_4 8 E GSM G9deh_4 8 GSM 1800 G18dh_4 8 GSM 1900 G19dh_4 8 Max number of TRXs 8 Number of feeders 4 Number of antennas 4 Antenna configuration TX RX TX TX RX TX Note The ASU is optional equipment EN LZT 720 0008 P2A 2001 11 28 61 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 64: ... TX1 RX1 CDU G DPX LNA DPX LNA TX1 TX2 RX1 RX2 dTRU TX2 CXU TX TX X X P007391B ASU Ant S3 5 Ant S1 3 TX RXA Ant X DPX LNA DPX TX RXA Ant X DPX LNA DPX ddTMA ddTMA Figure 22 G8dht_4 8 G9deht_4 8 G18dht_4 8 and G19dht_4 8 Characteristics Number of CDUs 2 Frequency band GSM 800 G8dht_4 8 E GSM G9deht_4 8 62 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i...

Page 65: ...t_4 8 Max number of TRXs 8 Number of feeders 4 Number of antennas 4 Antenna configuration TX RX TX TX RX TX TMA configuration ddTMA ddTMA Note The ASU is optional equipment EN LZT 720 0008 P2A 2001 11 28 63 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 66: ...2 TX1 TX2 RX1 RX2 dTRU TX1 CDU G DPX LNA Ant DPX LNA TX1 TX2 RX1 RX2 dTRU TX2 TX TX TX RXA TX1 TX2 RX1 RX2 dTRU TX1 RX1 CDU G DPX LNA TX DPX LNA TX1 TX2 RX1 RX2 dTRU TX2 CXU TX RXB TX X X X X X X P007392B Ant S1 Ant S5 ASU Figure 23 G8dh_6 12 G9deh_6 12 G18dh_6 12 and G19dh_6 12 64 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 67: ..._6 12 E GSM G9deh_6 12 GSM 1800 G18dh_6 12 GSM 1900 G19dh_6 12 Max number of TRXs 12 Number of feeders 6 Number of antennas 6 Antenna configuration 2 x TX RX 4 x TX Note The ASU is optional equipment EN LZT 720 0008 P2A 2001 11 28 65 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 68: ...dTRU TX1 CDU G DPX LNA Ant DPX LNA TX1 TX2 RX1 RX2 dTRU TX2 TX TX TX1 TX2 RX1 RX2 dTRU TX1 RX1 CDU G DPX LNA DPX LNA TX1 TX2 RX1 RX2 dTRU TX2 CXU TX TX X X X X P007393B Ant S1 Ant S5 ASU TX RXA X DPX LNA DPX ddTMA TX RXA X DPX LNA DPX ddTMA Figure 24 G8dht_6 12 G9deht_6 12 G18dht_6 12 and G19dht_6 12 66 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i ...

Page 69: ...osition in the cabinet To avoid having to change cables for different configurations the connections are set up automatically by the software The TX antenna connections are independent of the CXU The tables below show how TMAs and their associated bias injectors are connected to configurations using TMAs Table 14 1 x 12 configurations with CDU F CDU TMA Antenna No Connector No TMA config only 1 TX...

Page 70: ... RX 2 RXB 2 3 TX RX 5 TX RXA 3 RX 6 RXB Table 18 2 x 6 configurations with CDU G Cell CDU ASU Connector TMA Antenna No Connector Co siting only No TMA config only 1 1 TX RX1 1 1 TX RXA 1 TX RX2 2 2 TX RXB 2 3 TX RX1 5 5 TX RXA 3 TX RX2 6 6 TX RXB Table 19 3 x 4 configurations with CDU F Cell CDU TMA Antenna No Connector No TMA config only 1 1 TX RX 1 TX RXA 1 RX 2 RXB 2 2 TX RX 4 RXB 2 RX 3 TX RXA...

Page 71: ...fig only 1 1 TX RX1 1 1 TX RXA 1 TX RX1 3 3 TX RXB Alt 1 3 TX RX1 3 3 TX RXA 3 TX RX1 5 5 TX RXB Note 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 4 6 Site Cell Configurations SCC The following section shows SCCs in one RBS More RBSs can be combined to form larger configurations at a site Possible expansions...

Page 72: ...0 2 F18d_2 8 F18d_2 4 No 2 2 0 4 0 2 F18dt_2 8 F18dt_2 4 M 2 2 0 4 0 2 1 x 4 1 x 8 F9de_2 4 F9de_2 8 No 2 2 0 2 0 4 F9det_2 4 F9det_2 8 M 2 2 0 2 0 4 F18d_2 4 F18d_2 8 No 2 2 0 2 0 4 F18dt_2 4 F18dt_2 8 M 2 2 0 2 0 4 M Mandatory SCC 1 x 2 and 2 x 2 can be achieved as a subset of SCC 3 x 4 or 2 x 6 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 sub...

Page 73: ...4 0 M Mandatory CDU G Single Band Configurations without Hybrid Combiner Table 25 CDU G configurations without hybrid combiner in a fully or partly equipped cabinet SCC Configuration TMA Number of Antennas Allowed Number of dTRUs 3 x 2 3 x G8d_2 2 No 2 2 2 0 1 0 1 0 1 3 x G8dt_2 2 M 2 2 2 0 1 0 1 0 1 3 x G9de_2 2 No 2 2 2 0 1 0 1 0 1 3 x G9det_2 2 M 2 2 2 0 1 0 1 0 1 3 x G18d_2 2 No 2 2 2 0 1 0 1 ...

Page 74: ...dt_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 2 2 x G8d_2 2 No 2 2 0 0 1 0 1 0 2 x G8dt_2 2 M 2 2 0 0 1 0 1 0 2 x G9de_2 2 No 2 2 0 0 1 0 1 0 2 x G9det_2 2 M 2 2 0 0 1 0 1 0 2 x G18d_2 2 No 2 2 0 0 1 0 1 0 2 x G18dt_2 2 M 2 2 0 0 1 0 1 0 2 x G19d_2 2 No 1 2 2 0 0 1 0 1 0 2 x G19dt_2 2 M 1 2 2 0 0 1 0 1 0 M Mandatory 1 It is possible to mix cells with TMA and cells ...

Page 75: ...h_3 6 No 3 3 0 3 0 3 2 x G18dht_3 6 M 3 3 0 3 0 3 2 x G19dh_3 6 No 1 3 3 0 3 0 3 2 x G19dht_3 6 M 1 3 3 0 3 0 3 1 x 12 G8dh_6 12 No 6 0 6 G8dht_6 12 M 6 0 6 G9deh_6 12 No 6 0 6 G9deht_6 12 M 6 0 6 G18dh_6 12 No 6 0 6 G18dht_6 12 M 6 0 6 G19dh_6 12 No 6 0 6 G19dht_6 12 M 6 0 6 M Mandatory SCC 1 x 2 and 2 x 2 can be achieved as a subset of SCC 3 x 4 SCC 1 x 4 can be achieved as a subset of either SC...

Page 76: ...2 0 0 2 0 2 0 2 x G19dh_2 4 No 1 2 2 0 0 2 0 2 0 2 x G19dht_2 4 M 1 2 2 0 0 2 0 2 0 1 x 8 G8dh_4 8 No 4 0 0 4 0 G8dht_4 8 M 4 0 0 4 0 G9deh_4 8 No 4 0 0 4 0 G9deht_4 8 M 4 0 0 4 0 G18dh_4 8 No 4 0 0 4 0 G18dht_4 8 M 4 0 0 4 0 G19dh_4 8 No 4 0 0 4 0 G19dht_4 8 M 4 0 0 4 0 M Mandatory 1 It is possible to mix cells with TMA and cells without TMA in the same cell 4 6 2 RBS 2106 and RBS 2206 Dual Band ...

Page 77: ...iguration TMA Number of Antennas Allowed Number of dTRUs 1 x 4 1 x 4 F9de_2 4 F18d_2 4 No No 2 2 0 2 0 0 2 F9det_2 4 F18dt_2 4 M M 2 2 0 2 0 0 2 M Mandatory 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 positions are not used CDU G Configurations for GSM 900 and GSM 1800 Ta...

Page 78: ...ht_4 8 G18dht_2 4 M M 4 2 0 4 0 2 1 x 4 1 x 8 G8dh_2 4 G18dh_4 8 No No 2 4 0 2 0 4 G8dht_2 4 G18dht_4 8 M M 2 4 0 2 0 4 2 x 4 1 x 4 2 x G8dh_2 4 G18dh_2 4 No No 2 2 2 0 2 0 2 0 2 2 x G8dh_2 4 G18dh_2 4 M M 2 2 2 0 2 0 2 0 2 1 x 4 2 x 4 G8dh_2 4 2 x G18dh_2 4 No No 2 2 2 0 2 0 2 0 2 G8dht_2 4 2 x G18dht_2 4 M M 2 2 2 0 2 0 2 0 2 There are two options for placing the equipment in the cabinet GSM 800...

Page 79: ...dTRUs 1 x 4 1 x 4 G8dh_2 4 G19dh_2 4 No No 2 2 0 2 0 0 2 G8dht_2 4 G19dht_2 4 M M 2 2 0 0 2 0 2 There are two options for placing the equipment in the cabinet GSM 800 on the left hand side GSM 1900 on the right hand side or the other way round In each case the middle positions are not used 4 6 3 SW Power Boost Configurations with CDU G This section does not include any additional site cell configu...

Page 80: ...t_2 4 M 2 2 2 0 2 0 2 0 2 3 x G9deht_2 4 M 2 2 2 0 2 0 2 0 2 3 x G18dht_2 4 M 2 2 2 0 2 0 2 0 2 3 x G19dht_2 4 M 2 2 2 0 2 0 2 0 2 M Mandatory Each sector is split into two cells one underlaid cell consisting of the second TRX in the first dTRU and the first TRX in the second dTRU SPB is used in this cell one overlaid cell consisting of the two other TRXs SPB is not used in this cell 4 7 Co Siting...

Page 81: ... 3 3 3 No 3x4 3 x F9de_2 4 2 2 2 RBS 205 FCOMB 3 3 3 No 3 x F18d_2 4 2 2 2 RBS 205 FCOMB 3 3 3 M 3 x F18dt_2 4 2 2 2 RBS 205 FCOMB DPX 2 2 2 No 3 x F18d_2 4 2 2 2 RBS 205 FCOMB 2 2 2 M 3 x F18dt_2 4 2 2 2 M Mandatory 1 x 6 1 x 8 1 x 10 1 x 12 and 1 x 14 can be accomplished with a partly equipped expansion configuration 1 x 10 1 x 12 1 x 14 1 x 16 and 1 x 18 can be accomplished with a partly equipp...

Page 82: ...ter Therefore the 3 x 4 configuration which is three separate RBSs must be rebuilt to one single RBS that is all three sectors of the RBS 200 must be connected to the same TMCB 4 7 2 6 TRX RBS 2000 Macro Cabinets Expanded with 12 TRX Cabinet Co Siting with Single TRU Based RBS 2000 Using Filter Combiner Table 41 Expansion using filter combiner RBS 1 RBS 2 Result SCC Original SCC Basic Configuratio...

Page 83: ...Cabinet Using Filter Combiner Table 43 Expansion using filter combiner RBS 1 RBS 2 Result SCC Original SCC Basic Configuration Antennas Original SCC Basic Configuration Antennas 3 x 8 8 4 F9de_2 8 F9de_2 4 2 2 4 8 F9de_2 4 F9de_2 8 2 2 F9det_2 4 F9det_2 4 2 2 F9det_2 4 F9det_2 8 2 2 F18d_2 8 F18d_2 4 2 2 F18d_2 4 F18d_2 8 2 2 F18dt_2 8 F18dt_2 4 2 2 F18dt_2 4 F18dt_2 8 2 2 1 x 24 1 x 12 F9de_2 12 ...

Page 84: ...2 3 x G19dht_2 4 2 2 2 4 8 Co Siting with TDMA RBS Using an ASU The ASU is used for co siting with a TDMA RBS more specifically RBS 884 for 800 MHz and 1900 MHz and RBS 882 for 800 MHz only The unit allows a TDMA cabinet to share receiver antennas with a GSM cabinet The ASU is installed in a dTRU based GSM cabinet The implementation is for 800 and 1900 MHz The end configuration differs for differe...

Page 85: ...A Figure 26 Separate TX and two separate RX antennas with TMAs No new antennas are required 4 8 2 One Duplex Antenna RX TX The TDMA RBS may be equipped with only one TX RX antenna The recommendation in this case is to add two antennas for the dTRU based RBS One RX signal from the dTRU based RBS is supplied to the TDMA RBS thus adding RX diversity to the TDMA RBS P008503A RX A TDMA RBS TX RX Co sit...

Page 86: ...and One Duplex Antenna If the original antenna arrangement is TX RX RX the recommendation differs for configurations where the duplex filter is mounted internally without the possibility to access the TX and RX ports separately and configurations where the RX path is accessible Internal Duplex Filter If the duplex filter is internal and the RX path is not accessible the recommendation is to add on...

Page 87: ...the three duplex filters in series one internal and two external will degrade the TX performance of the co sited RBS P008529A RX B TDMA RBS Co sited TDMA RBS dTRU Based RBS RX A TX RX RX RX B Co sited TDMA RBS dTRU Based RBS TX RX TX RX TX RX TX RX TX RX DPX DPX Max 2 GSM TRX per sector RX Figure 30 Internal duplex filter and only two antenna ports accessible External Duplex Filter If an external ...

Page 88: ...Xs requires additional antennas P008530A RX B TDMA RBS Co sited TDMA RBS dTRU Based RBS RX A RX RX B Co sited TDMA RBS dTRU Based RBS TX RX TX RX TX RX TX TX RX DPX Max 2 GSM TRX per sector RX TX RX DPX TX RX A Figure 31 External duplex filter 86 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 89: ... frequency hopping receiver diversity duplex filters dynamic power regulation discontinuous transmission reception encryption ciphering 5 2 RBS 2106 Cabinet Description The RBS 2106 uses the same replaceable units as all RBSs in the RBS 2000 dTRU based Macro products Bias Injector CDU DC DC Converter OXU 19 CXU dTRU BFU Main Switch IDM PSU DXU OXU ACCU ADM Batteries TM TM Batteries P008534B DF FCU...

Page 90: ...r loading RBS software from the BSC The DXU is provided with four connections for transmission lines It can handle 2 Mbit E1 or 1 5 Mbit T1 PCM links The DXU has hardware support for EDGE on 12 TRXs Combining and Distribution Unit CDU The CDU is the interface between the transceivers and the antenna system All signals are filtered before transmission and after reception by means of bandpass filter...

Page 91: ...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 softwa...

Page 92: ... batteries It can also be used to provide prioritized power supply for example to the transmission equipment Each RBS cabinet will require its own BFU regardless of battery back up configuration DC DC Converter The DC DC converter can supply 48 V DC power to transmission equipment in the TM compartment It converts 24 V DC to 48 V DC Two DC DC converters can be installed if needed It should be note...

Page 93: ... reducing valve and an AC powered condenser fan to refrigerate the cooling air The CCU monitors temperatures both inside and outside the cabinet It provides heating or cooling by controlling the heater and fans internal and external in the Combined Climate Unit it also controls the compressor and the condenser fan The CCU also performs alarm handling and test functions P008419A Combined Climate Un...

Page 94: ... and LMU For more information on the DF see Section 5 3 3 on page 99 Distribution Module DM This unit supervises the OVP modules when a gas discharge tube in an OVP module degrades the DM sends a message through the external alarms to the RBS In addition the DM controls the by pass relay if by pass relay is used It can also distribute 24 V DC to external transmission equipment or an expansion OVP ...

Page 95: ...le for the tower mounted amplifier TMA CM is used to provide the Dual Duplex Tower Mounted Amplifiers ddTMA with 15 V DC power through the bias injector It also identifies ddTMA faults and forwards this information to the alarm module in the RBS If the TMA CM is used it is located in one of the four Optional Expansion Unit OXU positions in the DXU PSU subrack Antenna Sharing Unit ASU Antenna shari...

Page 96: ...t The footprint of the RBS 2106 is 1300 mm wide and 710 mm deep Note that the door which is 242 mm deep is not included in the footprint as it does not reach down to the ground The installation frame of the RBS 2106 has the same bottom holing pattern as that of the RBS 2102 94 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 97: ...cluding batteries 590 kg Fully equipped excluding batteries 550 kg Door with climate unit 150 kg Space Requirements Installation and maintenance require that the door can be opened at least 90 In practice this means that the space in front of the cabinet must be kept clear for a distance of 1300 mm see figure below No free space is needed at the back of the cabinet EN LZT 720 0008 P2A 2001 11 28 9...

Page 98: ...oler 33 C to 45 C Air to air heat exchanger unit no active cooler 33 C to 40 C During battery backup operation the refrigeration shuts down and the temperature limits are therefore slightly narrower Ground Vibrations The RBS 2106 is designed to fulfill earthquake protection according to IEC 68 2 57 Transient and Lightning Protection RBS 2106 is equipped with transient and lightning protection loca...

Page 99: ... 3 1 AC Connection Field N PE T 3 T 2 T 1 P008711A 17 28 mm Figure 38 AC Connection Field The AC mains supply for the RBS is connected here The incoming power supply can have a nominal voltage range of 120 250 V AC and a nominal frequency of 50 60 Hz Connection diagrams for various types of AC mains are given in RBS 2106 Installation Integration Manual EN LZT 720 0025 For more information on the R...

Page 100: ...ection Field This connection field is where the RF antenna connectors and the antenna sharing connectors are located The antenna connection field provides an interface for six RF antenna connectors and 6 RX connectors which prepares the cabinet for 4 way diversity or co siting 98 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 101: ... four transmission lines can be connected at here The DF can be equipped with optional OVP modules for more transmission lines For more information see the section OVP Module for PCM Lines below External Alarm Connections It is possible to define up to 16 external alarms The external device sets the alarm by either an open or a closed condition The alarm device connected to the screw terminals sho...

Page 102: ... Dummy Board Figure 41 OVP Module for PCM Lines Each module provides overvoltage protection for two PCM lines The overvoltage protectors OVP are mounted on an OVP board inserted into a slot connector in the OVP module An OVP board contains gas discharge tubes and serial fuses for protection of two lines The other slot connector in the OVP module can be equipped with several options A dummy board w...

Page 103: ...e Location Measurement Unit LMU is used it is connected to the RBS 2106 via the DF Power The power provided for external use for example for an LMU at this connection field is 24 V DC and it can deliver maximum 100 W of power 5 3 4 External Battery Connection Field This section is under construction 5 4 RBS Power System The main characteristics of the RBS 2106 power supply are Only alternating cur...

Page 104: ...abinet Figure 42 Functional block diagram of the RBS 2106 power system The hardware which makes up the RBS 2106 power system includes the ACCU IDM DC filter PSU BFU DC DC converter batteries and cables The location within the cabinet of major units for the power supply system is depicted below 102 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r ...

Page 105: ... voltage 108 275V AC Nominal frequency 50 60 Hz Operating frequency 45 65 Hz Maximum inrush current total all phases 60 A for 10 ms typical duration Maximum ground leakage current 50 mA PSU capacity 4 x 1200 W 4800 W total BFU 1 x 160 A 1 When operating below 200 V nominal voltage see the RBS 2106 Installation Integration Manual chapter Cabinet Installation for connection diagrams EN LZT 720 0008 ...

Page 106: ...eft of the BFU The battery space can be converted to TM space and the TM space can be used for batteries There are three configurations of battery back up available Internal battery Two or four blocks of batteries are installed in the TM BM space to the left of the BFU Batteries must all be of the same type The TM space remains available for optional transmission equipment Expanded battery Also ca...

Page 107: ...upport close to the antenna The ddTMA is provided with 15 V DC power by the TMA control module TMA CM located in the RBS 2106 cabinet The TMA CM also identifies amplifier faults and sends this information to the alarm module in the RBS The ddTMA is further described in Radio Site Product Data Manual EN LZT 720 0026 5 5 2 Radio Configurations The various configurations available for cabinets are de...

Page 108: ...0010 5 6 Transmission The RBS 2106 as all RBS 2000 models supports multi drop bypass functionality LAPD Link Access Procedures on D channel concentration and LAPD multiplexing can be used to make the transmission resource more efficient Each RBS can be configured for stand alone or linear cascade mode The configuration is performed using the OMT The DXU 21 is equipped with four external transmissi...

Page 109: ...o the cabinet via a screw terminal that includes an impedance converter E1 120 and T1 100 transmission support Long Haul E1 G 703 and T1 DS1 offer multi vendor compatibility on the transmission level Normally they both offer only short haul interfaces allowing loss up to 6 dB The Long Haul feature allows for 30 dB loss and a more efficient transmission network configuration 75 is only available fo...

Page 110: ... 395 mm deep X 449 mm 19 inches wide between the vertical mounting rails Power can be 24 V DC 48 V DC or both A DC DC converter is required for 48 V DC power the RBS 2106 can be equipped with two DC DC converters to obtain redundancy in the power supply Maximum power consumption for the various supply voltages are given in the following table Table 52 Maximum power consumption of equipment install...

Page 111: ...ink AC Protection Unit Optional TMR 9202 Figure 45 Site Equipment Overview The following is a list of the most common equipment on a radio site divided into function groups RBS 2206 Power BBS 2000 AC Distribution box Power cables Antenna System Antennas TMA Feeder cables Transmission TMR 9202 DXX EN LZT 720 0008 P2A 2001 11 28 109 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a...

Page 112: ...tallation may cause fire or electrical shock Approved circuit breakers for the AC mains and the cable s cross sectional areas must always be selected in accordance with local laws and regulations Only a qualified and authorized electrician is permitted to install or modify the electrical installation The RBS 2206 can be delivered in two versions The first version has power interface inlets for one...

Page 113: ...ution box RBS interface L1 L2 RBS Figure 47 Power connection L1 L2 120 250 V AC Two circuit breakers per PSU are required AC Mains Power Requirements AC mains power is connected to the ACCU in the cabinet using four AC cables The cables must be protected by a circuit breaker according to the figures above If the existing power system does not meet the specified requirements measurements must be ta...

Page 114: ...ans the smallest fuse that can be used with respect to power consumption and start up current Maximum allowed must not be exceeded due to the dimensions of the internal wiring and components AC Power Cables There are four external power cables for the radio cabinet one for each Power Supply Unit They are connected to the ACCU main switch with screw terminals The conductor area can be 1 5 2 5 mm 2 ...

Page 115: ...8 60 V DC Range 40 0 72 0 V DC Non destructive range 0 80 V DC Inrush current typical 200 A 0 1 0 5 ms Fuses Table 59 48 60 V fuses recommendation Fuse Rating for 60 V DC Fuse Rating for 48 V DC 32 A 40 A 48 60 V DC Cables There are four power cables for the cabinet one pair for each Power Supply Unit They are connected to the DCCU main switch with screw terminals The cables must be connected via ...

Page 116: ...xpansion Unit RBS 2206 is a high capacity indoor base station It is used for indoor applications with up to six double Transceiver Units dTRU The RBS 2206 is designed to be transported as a fully assembled cabinet to the site All units in the cabinet are easily accessible from the front of the cabinet which means that the cabinets can be mounted side by side with their backs against a wall 6 4 1 R...

Page 117: ... by means of bandpass filters The CDU allows several dTRUs to share antennas There are a maximum of three CDUs in one RBS 2206 The task of the CDU is to combine transmitted signals from several transceivers and to distribute received signal to several transceivers The CDU is hardware prepared to support EDGE Two different CDU types are used in RBS 2206 to support all the configurations CDU F is a ...

Page 118: ...U is controlled by the DXU When the cabinet is not fully equiped RU dummies are needed to ensure that the cooling system works properly The fans are positioned between the CDU subrack and the roof giving a common suction area They draw the air through three separate channels around the RUs Internal Distribution Module IDM The IDM is a panel for distributing the internal 24 V DC power to the variou...

Page 119: ...ements 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 EN LZT 720 0008 P2A 2001 11 28 117 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 120: ...low 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 6 4 3 Weights Table 60 Weight of cabinet Unit Weight Fully equipped cabinet incl base frame 230 kg Base frame 12 kg The weight of the heaviest replaceable unit is less than 15 kg CDU G 118 485 EN LZT 7...

Page 121: ...Section 6 3 Power Connections on page 110 Make sure the existing feeders and other cables reach the radio cabinet and that the battery back up cables have the correct cross sectional area 6 4 5 Power Consumption Table 61 Power consumption for RBS 2206 Power Supply Voltage RBS fully equipped 120 250 V AC 24 V DC 48 V DC Maximum power consumption 3 9 kW 5 8 kW 1 3 2 kW 3 8 kW 1 Power consumption dur...

Page 122: ...tested to withstand random vibrations of up to 0 2 m s It is also tested for single shocks up to 40 m s RBS 2206 is tested for seismic exposure with a test frequency of 1 35 Hz Maximum test level of the Required Response Spectrum RRS is 50 m s within 2 5 Hz The shape of RRS is defined by ETSI standard 6 4 10 External Alarms The external alarm inputs in the RBS 2206 do not have overvoltage protecti...

Page 123: ...inet towards the front inside the door Signal Cable Connections Table 63 Signal Cable Connections Connector Description G703 1 Transmission Link 1 G703 2 Transmission Link 2 G703 3 Transmission Link 3 G703 4 Transmission Link 4 DC out 24 V DC to external equipment External Alarms External alarm inputs ESB 1 External Synchronisation Bus ESB 2 External Synchronisation Bus Transmission cables alarm c...

Page 124: ... Power and Earthing Connections Table 64 Power and earthing connections Connector Description 24 V DC DC filter 24 V DC DC filter Earth Earth stud M8 ACCU 1 Mains connection to PSU AC 1 ACCU 2 Mains connection to PSU AC 2 ACCU 3 Mains connection to PSU AC 3 ACCU 4 Mains connection to PSU AC 4 DCCU 1 48 V connection to PSU DC 1 DCCU 2 48 V connection to PSU DC 2 DCCU 3 48 V connection to PSU DC 3 D...

Page 125: ...rface 6 5 1 Distribution Frame with Overvoltage Protection OVP for external alarm Distribution module PCM overvoltage module Earthing P008200A Figure 55 Distribution Frame with Overvoltage Protection The Distribution Frame DF is a connection and Overvoltage Protection OVP device for external alarms and PCM links A PCM link can be provided with a balun balanced unbalanced transformer to convert an ...

Page 126: ...e to a balanced 120 line P008443A OVP Board By pass Board Balun Board or Dummy Board Figure 56 OVP module for PCM lines Each module provides overvoltage protection for two PCM lines The overvoltage protectors OVP are mounted on an OVP board inserted into a slot connector in the OVP module An OVP board contains gas discharge tubes and serial fuses for protection of two lines The other slot connecto...

Page 127: ...F must be placed close to the earth collection bar therefore the earth cable must not be extended 6 5 2 Transmission Adapter Optional P008218A Figure 57 Transmission adapter TA The Transmission Adapter TA is a unit that contains a balun balanced unbalanced transformer for transforming 75 unbalanced to 120 balanced cable It is provided with two BNC connectors for connection of the 75 coaxial cable ...

Page 128: ...If a DC DC converter is used the BBS 2000 can deliver 48 V DC The converter is mounted in the BBS 2000 Maximum power outputs from the BBS 2000 are given in the table below Table 66 Maximum power output Battery Fuse Unit Current Power Output BFU 21 2 x 12 A max 2 x 250 W 24 V DC 200 W 48 V DC BFU 22 40 A max 800 W 24 V DC 6 5 5 Cascading P007503A RBS 2 RBS 1 BSC Next RBS BSC G703 1 G703 2 G703 3 G7...

Page 129: ... 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 The battery back up can be delivered for 1 2 4 6 or 8 hours back up time depending on the chosen configuration of the ...

Page 130: ... feed the transmission 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 equip...

Page 131: ...figurations for outdoor cells There are a number of antenna system products available such as antennas feeders jumpers TMAs and so on For more detailed information about products see RBS Site Solutions homepage http gsmrbs ericsson se gsmsystems solutions rbs_site_solutions index htm 6 7 1 Tower Mounted Amplifier TMA P006375B Bias T Injector TMA CM RBS ddTMA Ant RX TX CDU F CDU G 900 1800 1900 MHz...

Page 132: ...eiver sensitivity if strong interfering signals are present Feeders with 4 dB loss or more must be selected at sites where strong interfering signals are expected It may be necessary to select a feeder with higher loss and calculate the length to obtain a total loss of 4 dB Dual Duplex TMA ddTMA Antenna TX RX P007931A RBS ddTMA Figure 61 Dual Duplex TMA ddTMA The ddTMA is to be used for GSM 900 fo...

Page 133: ... 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 The TMA CM can be mounted either externally as in the R...

Page 134: ...iated dTRUs are standardized and do not normally change Each CDU uses a set of standard RF wiring patterns for connection between each CDU and the cabinet connection field In the figures and tables in the sections that follow the cabinets shown are fully equipped Configurations consisting of a part of the fully equipped cabinet can also be derived from the following figures and tables GSM 900 1800...

Page 135: ...CellC RXB From the configuration in figure above the following configurations can be derived 1x2 CDU F 2x2 CDU F 1x4 CDU F 2x4 CDU F P008229A DX1 DX2 Cell A Figure 65 Configuration scheme 1x8 CDU F Table 70 1x8 CDU F Cell CDU Connection Signal Labelling 1 TX RX TX RX CellA DX1 A 2 TX RX TX RX CellA DX2 EN LZT 720 0008 P2A 2001 11 28 133 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m...

Page 136: ...ble 71 1x12 CDU F Cell CDU Connection Signal Labelling 1 TX RX TX RX CellA DX1 A 3 TX RX TX RX CellA DX2 P008232A DX1 DX1 Cell B Cell A RXB RXB Figure 67 Configuration scheme 2x6 CDU F 134 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 137: ... CellB RXB P008230A DX1 DX1 RXB DX2 Cell B Cell A Figure 68 Configuration scheme 1x4 1x8 CDU F Table 73 1x4 1x8 CDU F Cell CDU Connection Signal Labelling TX RX TX RX CellA DX1 A 1 RX RX CellA RXB 2 TX RX TX RX CellB DX1 B 3 TX RX TX RX CellB DX2 EN LZT 720 0008 P2A 2001 11 28 135 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 138: ...X RX TX RX CellA DX1 A 2 TX RX TX RX CellA DX2 TX RX TX RX CellB DX1 B 3 RX RX CellB RXB GSM 900 1800 CDU F configurations with TMA P008260A TMA RXB RXB Cell C TMA TMA TMA Cell B TMA RXB TMA Cell A DX1 DX1 DX1 Figure 70 Configuration scheme 3x2 CDU F and 3x4 CDU F 136 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 139: ...C RXB From the configuration in figure above the following configurations can be derived 1x2 CDU F 2x2 CDU F 1x4 CDU F 2x4 CDU F P008255A DX1 DX2 TMA TMA Cell A Figure 71 Configuration scheme 1x8 CDU F Table 76 1x8 CDU F Cell CDU Connection Signal Labelling 1 TX RX TX RX CellA DX1 A 2 TX RX TX RX CellA DX2 EN LZT 720 0008 P2A 2001 11 28 137 485 Ericsson Radio Systems AB All Rights Reserved P r e l...

Page 140: ...1 A 3 TX RX TX RX CellA DX2 P008257A DX1 TMA Cell A DX1 Cell B TMA TMA RXB RXB TMA Figure 73 Configuration scheme 2x6 CDU F Table 78 2x6 CDU F Cell CDU Connection Signal Labelling TX RX TX RX CellA DX1 A 1 TX RX TX RX CellA RXB TX RX TX RX CellB DX1 B 3 RX RX CellB RXB 138 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 141: ...CDU F Cell CDU Connection Signal Labelling TX RX TX RX CellA DX1 A 1 RX RX CellA RXB 2 TX RX TX RX CellB DX1 B 3 TX RX TX RX CellB DX2 P008258A DX1 TMA Cell A Cell B TMA TMA RXB TMA DX2 DX1 Figure 75 Configuration scheme 1x8 1x4 CDU F EN LZT 720 0008 P2A 2001 11 28 139 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 142: ...uration scheme 3x2 CDU G and 3x4 CDU G Table 81 3x2 CDU G and 3x4 CDU G Cell CDU Connection Signal Labelling TX RX1 TX RX CellA DX1 A 1 TX RX2 TX RX CellA DX2 TX RX1 TX RX CellB DX1 B 2 TX RX2 TX RX CellB DX2 TX RX1 TX RX CellC DX1 C 3 TX RX2 TX RX CellC DX2 From the configuration in the figure above the following configurations can be derived 1x2 CDU G 2x2 CDU G 1x4 CDU G 2x4 CDU G 140 485 EN LZT...

Page 143: ...ell CDU Connection Signal Labelling TX RX1 TX RX CellA DX1 1 TX RX2 TX CellA TX1 TX RX1 TX RX CellA DX2 A 2 TX RX2 TX Cell ATX2 P008226A DX1 TX1 Cell A TX3 TX2 DX2 TX4 Figure 78 Configuration scheme 1x12 CDU G EN LZT 720 0008 P2A 2001 11 28 141 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 144: ...X2 A 3 TX RX2 TX CellA TX4 P008224A Cell B DX1 DX2 DX1 DX2 Cell A TX1 TX2 Figure 79 Table 84 2x6 CDU G Cell CDU Connection Signal Labelling TX RX1 TX RX CellA DX1 1 TX RX2 TX RX CellA DX2 A TX RX1 TX CellA TX1 2 TX RX2 TX CellA TX2 TX RX1 TX RX CellA DX1 B 3 TX RX2 TX RX CellA DX2 142 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 145: ...nd 3x4 CDU G Cell CDU Connection Signal Labelling TX RX1 TX RX CellA DX1 A 1 TX RX2 TX RX CellA DX2 TX RX1 TX RX CellB DX1 B 2 TX RX2 TX RX CellB DX2 TX RX1 TX RX CellC DX1 C 3 TX RX2 TX RX CellC DX2 From the configuration above the following configurations can be derived 1x2 CDU G 2x2 CDU G 1x4 CDU G 2x4 CDU G EN LZT 720 0008 P2A 2001 11 28 143 485 Ericsson Radio Systems AB All Rights Reserved P ...

Page 146: ...U G Cell CDU Connection Signal Labelling TX RX1 TX RX CellA DX1 1 TX RX2 TX CellA TX1 TX RX1 TX RX CellA DX2 A 2 TX RX2 TX Cell ATX2 P008262A DX1 DX2 TMA TX1 TX2 TX3 TX4 Cell A TMA Figure 82 Configuration scheme 1x12 CDU G 144 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 147: ...X4 P008263A DX1 TMA Cell B Cell A DX2 DX1 DX2 TMA TMA TX2 TX1 TMA Figure 83 Configuration scheme 2x6 CDU G Table 88 2x6 CDU G Cell CDU Connection Signal Labelling TX RX1 TX RX CellA DX1 1 TX RX2 TX RX CellA DX2 A TX RX1 TX CellA TX1 2 TX RX2 TX CellA TX2 TX RX1 TX RX CellA DX1 B 3 TX RX2 TX RX CellA DX2 EN LZT 720 0008 P2A 2001 11 28 145 485 Ericsson Radio Systems AB All Rights Reserved P r e l i ...

Page 148: ...Product Data RBS 2206 This page is intentionally left blank 146 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 149: ...ability and can be run on both 1 544 Mbit s T1 and 2 048 Mbit s E1 PCM links 7 1 System Environment The DXU 21 is designed to work in RBS 2000 Macro radio base stations This block diagram shows DXU 21 in the RBS 2206 system environment OXU DXU d T R U d T R U d T R U d T R U d T R U d T R U CDU CDU CXU PSU FAN Cabinet LEDs EPC bus External alarms ESB Transmission lines IOM bus Y links P007455C Opt...

Page 150: ...Ext Ref source Timing bus Compact Flash Card Interface CPU System Part of timing system OVCXO DAC MMI DXU 13 MHz test Communication switch system Power supply 24 V P007457C Local bus Local bus Figure 85 DXU 21 block diagram Electrically the DXU 21 consists of the following main blocks CPU system Communication switch system Transmission interface controller Power supply Timing system Miscellaneous ...

Page 151: ...mission interface controller which controls the traffic for all four transmission links The bit rate is SW controlled Two speeds are available E1 2 048 Mbit s or T1 1 544 Mbit s 7 2 4 Power Supply The power supply delivers all the voltages necessary for the DXU 21 The input voltage 24 V DC is supplied through the backplane connectors 7 2 5 Timing System The timing system is used for generating a 1...

Page 152: ...ckplane Power supply External alarm Local bus Timing bus Local Fault Operational RSB Fault Ext Alarms EPCbus fault EOMbus fault DXU reset LocalRemote Test EPC V7 12 V 1 6 Status Port A Port B Port A Port B Port C Port D Status Port C Port D OMT ESB GPS EOM Compact Flash Card Figure 86 DXU 21 front panel and backplane G 703 Interface The four G 703 interfaces are connected to the BSC Protocol GSM A...

Page 153: ...is 24 V DC Local Bus The local bus is a time slot and multidrop bus where the DXU 21 is the master of the bus In this DXU two identical local buses are implemented with common frame synchronization and clock signals The interface is accessed through the lower backplane connector The local bus is used for TRUs and sTRUs Timing Bus This interface is used for distribution of timing information to the...

Page 154: ...for interfacing an external sync frequency source such as GPS It is accessed through a connector of type 8 pin RJ 45 located on the front of the DXU The connector is marked GPS GPS LMU This interface is identical to the serial line used in the interface External sync 1 It is possible to use this interface from the backplane together with the interface External sync 0 as an alternative to the GPS i...

Page 155: ...l signals use RS 232 levels Table 89 The OMT pins and their functions Pin Function 1 DCD looped from DTR pin 4 2 RXD data out of DXU 3 TXD data into DXU 4 DTR looped to DCD pin 1 and DSR pin 6 5 Signal ground 6 DSR looped from DTR pin 4 7 RTS looped to CTS pin 8 8 CTS looped from RTS pin 7 9 RI not connected Note The connector is configured as a DCE and thus should be connected to an IBM PC style ...

Page 156: ...r Colour Fault Red Operational Green Transmission OK port A B C D Green 4 pcs Local Yellow RBS fault Yellow External alarm Yellow EPC bus fault Yellow EOM bus fault Yellow 7 5 Dimensions and Weight Table 91 DXU 21 dimensions and weight Height 227 mm 6 HE x 44 45 mm Width 71 mm 14 TE x 5 08 mm Depth 240 mm Weight 2 4 kg Max Power Consumption 40 W typical 30 W Max Heat Generation 40 W 154 485 EN LZT...

Page 157: ...e common terminal Two of the receive antenna terminals are used for 2 branch diversity reception The dTRU is hardware prepared for 4 branch diversity reception via the remaining two antenna terminals 8 1 Block Diagram CPU P007395A system Y link DSP system RC system Radio system DSP system RC system Radio trans mitter Hybrid comb TX1 RX1 TX1 TX2 HC1 RX2 RX4 RX3 HC2 TX2 Radio receiver Radio receiver...

Page 158: ...S as the front end to the radio which can be asked to transmit a burst of data using a selected modulation or asked to receive a burst using a selected digital filter All the time critical radio control functions are performed by the Radio Control system and no computing support is required from the CPU system on a real time basis Radio System Each Radio system contains two radio receivers and one...

Page 159: ...xternal interfaces CDU TX control bus IOM bus IOM bus LEDs and buttons interface RX front TX front Y link 8 3 1 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 EN LZT 720 0008 P2A 2001 11 28 157 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 160: ...stem voltage and connectors are located on the backplane See Figure 88 on page 157 8 4 Technical Data Table 93 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 heat generation TBD 158 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 161: ...resent and future capacity requirements These factors are considered when selecting CDU type initial cost capacity requirements present and future number of antennas and frequency hopping capability CDU G handles one or two dTRUs Connected to one dTRU it provides a low capacity high output power configuration Connected to two dTRUs it provides a high capacity low output power configuration CDU G s...

Page 162: ...or The MCU samples forwarded and reflected signals and distributes them to the Measurement Receiver MR for antenna return loss monitoring RX Part Description CDU G consists of two identical RX chains The RX parts consist of a filter and a low noise amplifier LNA The receiving filter is included in the duplex filter Distribution of RX signals is performed in the Configuration Switching Unit CXU Blo...

Page 163: ...e antenna both for transmitting and receiving The duplex filter is connected directly to the antenna connector on top of the CDU The duplex filter also filters the RX signal arriving to the same antenna This filtered RX signal is amplified in a two stage low noise amplifier and then filtered in a lowpass filter CDU F also has an extra RX chain for diversity This extra RX chain is similar to the du...

Page 164: ...can be the MR in the same CDU F or the MR in another CDU F depending on the configuration The MR measures the input signal to the filter combiners and also the outgoing signal to the antenna These two signals are used in the CPU to control the stepper motors one for each filter cavity Moving parts in the filter cavity tune the combiner to the correct frequency 9 2 CDU Functions Table 94 CDU Functi...

Page 165: ... CDU F only Input ports to MR for reflected power CDU F only CDU Bus System Voltage 9 3 1 Indicators CDUs have two indicators Table 95 CDU indicators Indicator Colour Fault Red Operational Green 9 4 Technical Data Table 96 CDU F Dimension CDU F CDU G Height 400 mm 9 HE x 44 45 mm 400 mm 9 HE x 44 45 mm Width 142 mm 28 TE x 5 08 mm 142 mm 28 TE x 5 08 mm Depth 239 90 mm 1 239 90 mm 1 Weight CDU F 1...

Page 166: ...Unit Decription CDU G and CDU F This page is intentionally left blank 164 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 167: ...900 GSM 1800 and GSM 1900 The CXU is positioned between the CDU and the dTRU intended for 12 TRX cabinets 10 1 Block Diagram CDU bus Power supply CXU RX1_TRU1 RX2_TRU1 RX1_TRU2 RX2_TRU2 RX1_TRU3 RX2_TRU3 RX1_TRU4 RX2_TRU4 RX1_TRU5 RX2_TRU5 RX1_TRU6 RX2_TRU6 RX2_CDU3 RX1_CDU3 RX2_CDU2 RX1_CDU2 RX2_CDU1 RX1_CDU1 P007459A Figure 93 Block diagram of the CXU 10 2 Functions The CXU has six different swi...

Page 168: ... signals from the CDU Twelve outputs for RX signals to dTRU CDU bus connector for alarm and configuration settings Power supply connector The CXU has the following indicators Operational green Fault red RXI TRU1 RX2 RXI CDU RX2 RXI TRU2 RX2 RXI TRU3 RX2 RXI TRU4 RX2 RXI CDU2 RX2 RXI TRU5 RX2 RXI CDU3 RX2 RXI TRU6 RX2 Oper Fault DC CD U3 CDU bus CXU 10 900 P007458A Figure 94 CXU 10 external interfa...

Page 169: ...for up to six TMAs Control of TMA on off DC current and voltage measurement Supervision indicators Short circuit protection Cable supervision The TMA CM supplies up to six TMAs with 15 volt and maximum 500 mA to each TMA The power output is a 15 pole d sub connector on the front of the TMA CM A TMA consumes in general 70 200 mA The TMAs can be individually powered on and off by commands from the D...

Page 170: ...6 and RBS 2206 If the TMA or the feeder cable is short circuited the TMA CM limits the current to 500 mA The power cable to the Bias Injector is supervised and an alarm is generated if the cable is not connected The alarm is transmitted on the IOM bus 11 3 External Interfaces P008300A Fault Oper 1 2 3 4 5 6 TMA oper TMA power TMA CM 01 Figure 96 TMA CM The TMA CM has the following external interfa...

Page 171: ...n operation Green TMA4 in operation Green TMA5 in operation Green TMA6 in operation Green 11 5 Electrical Data 11 5 1 Input Data Table 99 Input data Nominal input voltage 24 V DC Input voltage range 20 0 to 29 5 V DC Non destructive voltage 0 to 32 V DC Maximum input power 60 W 11 5 2 Output Data Table 100 Output data Voltage per output 1 6 15 V DC 1 Current per output 1 6 Max 500 mA 1 Tolerance 1...

Page 172: ...Unit Description TMA CM This page is intentionally left blank 170 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 173: ... 6 Coupler 2 Coupler 3 Coupler 4 Coupler 5 Atten control DC DC converter CXU RX1 CDU1 CDU1 RX1 CXU RX2 CDU1 CDU1 RX2 CXU RX1 CDU2 CDU2 RX1 CXU RX2 CDU2 CDU2 RX2 CXU RX1 CDU3 CDU3 RX1 CXU RX1 CDU3 CDU3 RX2 24 V Ant S1 Ant S2 Ant S3 Ant S4 Ant S5 Ant S6 TMA No TMA P008480A Figure 97 ASU block diagram 12 1 1 ASU Design The ASU is located between the CDU and the CXU See figure below The ASU connector ...

Page 174: ...ng the following functions 200 resistor to ground for cable supervision purposes Directional coupler Attenuator Switch to select between high and low attenuation Built in overvoltage protection A schematic view of one coupler is shown Figure 99 on page 173 172 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 175: ...lso performs the following Switches the attenuation in accordance with whether or not a TMA is used It also indicates the attenuation state via a LED 12 2 1 RX Signal Path The RX signal path is fed from the antennas through the feeders to the Antenna Reference Point ARP of the RBS 2206 The signal is then filtered and amplified in the CDU From the RX output of the CDU the signal is fed to the ASU w...

Page 176: ...rt function in the TDMA cabinet 12 3 External Interfaces The ASU has the following connectors six input ports for RX signals from the CDU six output ports for RX signals to the CXU six output ports for RX signals to the co sited RBS power supply connector P008470A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Figure 101 ASU connection ports 174 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Syst...

Page 177: ...a sharing connectors left side position 3 8 CDU2 RX1 CDU2 port RX1 9 RX1 CXU port 9 10 RX2 CXU port 10 11 CDU2 RX2 CDU 2 port RX2 12 Ant S4 antenna sharing connectors right side position 4 13 Ant S5 antenna sharing connectors right side position 5 14 CDU3 RX1 CDU 3 port RX1 15 RX1 CXU port 15 16 RX2 CXU port 16 17 CDU3 RX2 CDU 3 port RX2 18 Ant S6 antenna sharing connectors right side position 6 E...

Page 178: ...re two indicators on the front inducating the status of the ASU Table 102 ASU status indicators Indicator Color Operational Green TMA Yellow 12 4 Technical Data Table 103 ASU weight and dimensions Depth 80 mm excluding front protrusion Height 22 mm Weight 2 kg Width 437 5 mm Maximum power consumption 2 W 176 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i...

Page 179: ...Unit Description ASU The ASU protrudes 40 mm from the rack including the front panel EN LZT 720 0008 P2A 2001 11 28 177 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 180: ...Unit Description ASU This page is intentionally left blank 178 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 181: ...ch fan It feeds each fan with the required DC voltage level If no DC level is received the DC level for the fans will be equal to the FCU input voltage minus a maximum voltage drop of 0 7 V If the normally closed circuit in the fan is opened the indicator Fan fault for that fan is illuminated and an alarm is sent through the EPC bus The FCU compares the DC level for each fan with the required DC l...

Page 182: ...trical Data 13 4 1 Input Data Table 105 Input data Nominal Input Voltage 24 0 V DC Input Voltage Range 19 0 to 29 0 V DC Non Destructive Voltage 0 0 to 32 0 V DC Input Power 4 x 45 W 13 4 2 Output Data Table 106 Output data Output Voltage Zero and 9 28 3 V DC Output Current Min 1 8 A between 9 28 3 V DC 13 4 3 Fan Alarm There is one alarm signal for each fan The alarm circuit is normally closed An...

Page 183: ...5 20 mA Table 108 Alarm Alarm pos Upos 5 30 V DC Alarm neg Uneg 2 V DC Current Ialarm 5 mA 13 4 4 Dimensions and Weight Table 109 FCU 01 dimensions and weight Height 195 mm Width 98 mm Depth 45 mm Weight 0 5 kg EN LZT 720 0008 P2A 2001 11 28 181 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 184: ...Unit Description FCU 01 This page is intentionally left blank 182 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 185: ...ing forces Power connection for internal distribution 14 2 External Interfaces P008243A Figure 104 DC filter The DC filter has the following external interfaces Two input terminals for 70 150 mm 2 Pull relief clamps for incoming power cables with diameter 14 26 mm Two output cables with area 70 mm 2 14 3 Input Data Table 110 Input data Input Voltage Nominal 24 V DC Range 20 0 29 0 V DC Non Destruc...

Page 186: ...imensions and Weight Table 111 FCU filter 01 dimensions and weight Height 293 5 mm Width 164 mm Depth 70 mm Weight 6 kg incl cables 184 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 187: ...trol and Supervision Indi cators Opto Interface AC Mains DC Output P007804A Control Alarm Figure 105 PSU AC block diagram The PSU AC consists of the following main units Input filter EMC filter Bridge Boost converter DC DC converter Output filter EMC filter Control and supervision circuits Input Filter The incoming sine voltage first passes through an internal fuse and then the input filter where ...

Page 188: ...voltage can be adjusted between 22 to 29 V DC The control and supervision is achieved through an optical signal interface connector on the front of the PSU Output Filter The output voltage is filtered to prevent unwanted signals from being radiated from the PSU 15 1 2 Functions The PSU AC has the following functions Communication Handling alarms Voltage adjustment Power limitation Communication Th...

Page 189: ... 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 power and an alarm is sent to the DXU Output power increases when the temperature drops and the alarm is res...

Page 190: ...Figure 106 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 The PSU has no backplane connections 15 1 4 Indicators There are three indicators located on the front panel 188 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 191: ...300 V AC Pulses 20 ms 300 V AC Max power consumption 1446 V A Max heat generation 246 W 1 90 V AC with reduced output power 15 1 6 Output Data Table 114 Output data Nominal output voltage 24 V DC Preset output voltage 27 2 0 1 V DC Voltage range 22 to 29 V DC Ouput power 108 275 V 1200 W Output power 90 108 V 1000 W Output current at 27 2 V DC 36 8 A at 90 108 V AC 44 1 A at 108 275 V AC 15 1 7 Di...

Page 192: ... to prevent unwanted signals from being radiated from the PSU DC DC Converter A phase shifted full bridge converter that converts the DC into a square wave which is then fed into the primary side of the transformer The converter limits the current in case of overload In the transformer the voltage is converted to a 24 V AC square wave and this wave is rectified to DC through a diode rectifier The ...

Page 193: ...interface In the event of communication failure the PSU continues working with default values Alarms The following alarms are detected in the converter and are then forwarded to the DXU and an indicator is illuminated on the PSU front Converter failure Input fault Input undervoltage Input overvoltage Output overvoltage hardware alarm Output overvoltage software alarm High internal temperature Powe...

Page 194: ...ut power increases when the temperature drops and the alarm is reset When the output power of the converter reaches 1200 W the converter limits its power by reducing its output voltage in order to maintain a constant output power The output current increases to a maximum of 60 A even in the event of short circuits 15 2 3 External Interfaces Fault Operational EPC bus PSU DC TD RD INPUT 120 250 VAC ...

Page 195: ... 48 60 V DC Permitted variation input voltage 39 72 V DC Input Current 36 A Inrush current 200 A Efficiency 85 Non destructive voltage 0 75 V DC Max power consumption 1411 W Max heat generation 211 W 15 2 6 Output Data Table 118 Output data Nominal output voltage 24 V DC Factory set value 27 2 0 1 V DC Voltage range 22 0 29 0 V DC Output power 1200 W Output current at 27 2 44 1 A Output current at...

Page 196: ...2 7 Dimensions and Weight Table 119 DC DC Converter dimensions and weight Height 262 mm Width 61 mm Depth 225 mm Weight 3 1 kg 194 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 197: ...U consists of a box with Terminal block for incoming AC cables Eight pole main switch disconnecting device One EMC filter Four cables to the PSUs 16 1 1 Functions The ACCU has the following functions Termination of incoming AC mains cables Disconnecting incoming AC mains EMC filtering 16 1 2 External Interfaces P006805A ACCU Figure 109 ACCU The ACCU has the following interfaces EN LZT 720 0008 P2A...

Page 198: ...21 Conductor area 1 5 mm 2 Number of conductors 3 L N PE 16 1 3 Dimensions and Weight Table 122 Height 293 5 mm Width 141 mm Depth 60 mm Weight 5 kg 16 2 DCCU The DCCU consists of a box with Terminal block with incoming DC cables Eight pole main switch disconnecting device A feed through capacitor filter Four cables to the PSUs 16 2 1 Functions The DCCU has the following functions Termination of i...

Page 199: ... to the PSUs Input Data Table 123 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 2 Number of conductors 2 Output Data Four cables with connectors matching the PSU DC inlet Table 124 Conductor area 6 mm 2 Number of conductors 2 EN LZT 720 0008 P2A 2001 11 28 197 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 200: ...tion ACCU DCCU 16 2 3 Dimensions and Weight Table 125 Height 293 5 mm Width 141 mm Depth 60 mm Weight 5 kg 198 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 201: ...gram Service outlet Climate Unit PSU 1 PSU 2 PSU 3 PSU 4 EPC BUS Distribution Unit 24V DC AUX 24V DC Internal light EMC filter Overvol tage protection Mains Switch Connection Unit Control Board AC Mains 24 48V DC P008483A Figure 111 Block diagram of ACCU 02 Connection Unit The Connection Unit consists of Main Switch Overvoltage protectors EMC filter Distribution Unit The Distribution Unit consists...

Page 202: ...ossible to connect and disconnect the PSUs through the EPC bus Distributes AC power to the Climate Unit Provides EMC filtering and protection against power line disturbances on the incoming AC power Acts as a Disconnecting Device Main Switch Supervises the mains and gives an alarm on undervoltage fuse fault and worn out overvoltage protectors Provides 24 V DC outputs to lighting in the cabinet and...

Page 203: ...Table 127 AC supply 50 Hz Single phase four wire earthed neutral 200 V AC to 250 V AC Three phase star four wire 1 earthed neutral 346 200 V AC to 433 250 V AC Three phase star four wire 1 earthed neutral 208 120 V AC to 220 127 V AC 1 It is also possible to supply the ACCU with a three phase five wire system separate neutral and earth conductors EN LZT 720 0008 P2A 2001 11 28 201 485 Ericsson Rad...

Page 204: ...l lightning 17 4 2 Output Data Table 130 Output voltages PSU 1 4 180 275 V AC Climate Unit 180 275 V AC Service Outlet Same as input line to neutral Internal lightning 24 V DC 18 to 32 V DC Auxiliary 24 V DC 18 to 32 V DC Note The DC output voltages require DC input voltage Table 131 Output power PSU 1 4 1500 W each Climate Unit 3000 W Service Outlet 1500 W 50 Hz 1200 W 60 Hz Internal lightning 24...

Page 205: ...escription ACCU 02 17 5 2 Connection Unit Table 133 Dimensions Width 205 mm Height 93 mm Depth 301 mm EN LZT 720 0008 P2A 2001 11 28 203 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 206: ...Unit Description ACCU 02 This page is intentionally left blank 204 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 207: ...perature of the battery is too high or if there is a short circuit between the distribution cables 18 1 Block Diagram Supervision Module Shunt Contactor TM and EC supply TM1 TM2 EC 15A 15A 2A EPC bus opto Battery 200A P008643B RBS DC distribution Contactor Figure 113 Block diagram of BFU 21 EN LZT 720 0008 P2A 2001 11 28 205 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 208: ...the Contactor Circuit Breaker The Circuit Breaker disconnects the batteries if the current becomes too high It can also be manually operated on the front of the BFU to connect or disconnect the batteries from the DC distribution Shunt The shunt is used to sense the input current The Supervision Module senses the value which is used for control of the BFU TM and EC Supply BFU 21 has two TM outputs ...

Page 209: ...if a battery is not present The relay can select the power source with a control signal from the SM The BFU communicates on the EPC bus opto cable with the DXU If the EPC bus is not present the BFU operates at its default values The battery voltage current and temperature are monitored and alarms are sent on the EPC bus The BFU disconnects the battery if the current is too low or the temperature i...

Page 210: ... EPC bus 18 3 1 Indicators and Buttons On the front panel there are four indicators see the following table and four switches Table 134 Indicators Indicator Colour Fault Red Operational Green EPC bus fault Yellow Battery disconnected Yellow Switches on BFU 21 Battery Disconnect on off DC out 1 on off DC out 2 on off EC on off Switches on BFU 22 208 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio...

Page 211: ...rent ripple 20 Hz 20 kHz 48 Ap p 18 4 2 Output Data Table 136 Output currents BFU 21 RBS DC distribution nominal 160 A RBS DC distribution maximum 180 A during 3 hrs TM1 supply 12 A TM2 supply 12 A EC supply 1 5 A Table 137 Output currents BFU 22 RBS DC distribution nominal 160 A RBS DC distribution maximum 180 A during 3 hrs TM supply 40 A 18 4 3 Dimensions and Weight Table 138 Dimensions and wei...

Page 212: ...Unit Description BFU 21 and BFU 22 This page is intentionally left blank 210 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 213: ... function of all DC powered units Monitors the system voltage 24 V DC 19 2 External Interfaces P007891B System voltage test port DC out 15A Climate 30A Fan 1 5A Fan 3 5A Fan4 5A TRU 1 30A TRU 2 30A CDU 1 5A TRU 4 30A CDU 2 5A TRU 5 30A TRU 6 30A CDU 3 5A CXU 1 2 DXU 5 5A DXU Sys Volt Sens 5A OXU 1 5A OXU 2 5A OXU 3 5A OXU 4 5A TRU 3 30A Operation IDM 01 Fan 2 5A Figure 117 The IDM The IDM has the ...

Page 214: ...nel are one green indicator and 21 circuit breakers The function of the circuit breakers can be read on the front panel Table 140 Indicators and buttons Indicator Colour Operational Green 19 4 Input Data Table 141 Input data Input voltage Nominal 24 V DC Range 20 0 29 0 V DC Non destructive range 0 0 32 0 V DC Input power 4800 W 19 5 Output Data Maximum voltage drop from the input to the output of...

Page 215: ...n 1 4 5A 4 OXU 1 4 5A 4 DXU 5A 1 CDU 1 3 5A 3 DC out 15A 1 TRU 1 6 30A 6 Climate unit 30A 1 19 6 Dimensions and Weight Table 143 Dimensions and weight Height 133 mm Width 483 mm Depth 80 mm Weight 5 kg EN LZT 720 0008 P2A 2001 11 28 213 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 216: ...Unit Description IDM This page is intentionally left blank 214 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 217: ...d with two types of climate units One Combined climate unit or One Air to air heat exchanger 20 1 Combined Climate Unit P008415A AC Input DC Input Figure 118 Combined climate unit The Combined climate unit provides the RBS cabinet with cooling or heating to keep the operating temperature within specified limits The unit contains a heat exchanger an active cooler a heater and air ducts and fans EN ...

Page 218: ...sts of the following units Heat exchanger Active cooler Heater Climate Control Unit CCU DC DC converter AC DC converter Transformer Heat Exchanger This unit consists of a cross flow heat exchanger DC powered internal and external air circuit fans Active Cooler This unit consists of a compressor reducing valve condenser evaporator and an AC powered condenser fan 216 485 EN LZT 720 0008 P2A 2001 11 ...

Page 219: ...nit consists of a heat exchanger and an active cooler At moderate ambient temperature only the heat exchanger is used to cool the cabinet At higher ambient temperatures the active cooler will start up to contribute to the cabinet cooling The heat exchanger and the active cooler will co operate in such a way that the long time average power consumption will be minimised If the ambient temperature i...

Page 220: ...ecreases below the compressor stop value a compressor stop signal is activated but the compressor will continue running for at least 10 minutes If the return air temperature should drop to 15 the compressor is stopped immediately to prevent the risk that the heater and active cooling should operate simultaneously If the mains current to the compressor is missing it is reported as compressor failur...

Page 221: ...C from the RBS The converter feeds 48 V DC to the internal air circuit fan the external air circuit fan in the heat exchanger and the CCU AC DC Converter The AC DC converter converts AC mains to 48 V DC for the internal air circuit fan the external air circuit fan in the heat exchanger and the CCU when 24 V DC supply is not present Transformer The transformer has windings for mains input voltages ...

Page 222: ...rs see the following table a test button and a test and general signal connector Table 144 Indicators Indicator Colour CCU Fault Red Operation Green Heater fault Yellow Heat exchanger internal fan fault Yellow Heat exchanger external fan fault Yellow Power fault Yellow EPC bus fault Yellow Active cooler fan fault Yellow Active cooler fault Yellow 220 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Rad...

Page 223: ...46 Mechanical data Height 1250 mm Width 1050 mm Depth 250 mm Weight 105 kg Cooling capacity heat exchanger and active cooler 5 3 kW Active cooler external air flow 700 m h Heat exchanger external air flow 800 m h 20 2 Air to Air Heat Exchanger Will be described later EN LZT 720 0008 P2A 2001 11 28 221 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 224: ...Unit Description RBS 2106 Climate Unit This page is intentionally left blank 222 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 225: ... a function described in another chapter please refer to the table of contents to find the appropriate chapter 21 2 Concepts BCCH Extended Paging Immediate Assign and System Information 2quater 7 8 13 16 and 17 may share the same TDMA frame mapping see GSM 05 02 21 3 Functions 21 3 1 Broadcast of Synchronisation Information Synchronisation bursts are transmitted on SCH and Frequency Correction bur...

Page 226: ... and 17 System Information is included in the BCCH_INFORMATION message received from the BSC New System Information received is used in BCCH transmissions when scheduled Transmission of a specific System Information message can be stopped by a BCCH_INFORMATION message GSM 08 58 sent from the BSC 21 3 3 Broadcast of System Information on BCCH The RBS supports scheduled transmission of System Inform...

Page 227: ...2ter 13 1 2quater 13 1 2quater 13 1 2ter 2quater 13 2 5 2 2bis 2ter 2quater 2bis 2bis 2ter 2bis 6 3 3 3 3 3 3 3 3 7 4 4 4 4 4 4 4 4 1 If 2ter and 13 or 2quater and 13 are loaded they are sent every second time 2 If all three 2ter 2quater and 13 are loaded each of them is sent every third time Table 148 The BCCH Extended System Information schedule TC Type 2 17 3 8 5 2quater 0 13 6 16 7 7 The BCCH ...

Page 228: ...heduled transmission of System Information on the SACCH channel GSM 04 18 Reception of System Information from the BSC for all channel groups within a TRX is described in the section above Reception of System Information for one particular channel group is described in chapter Call Control Supported logical channels GSM 05 02 SACCH Slow Associated Control Channel Supported channel combinations GSM...

Page 229: ... 5 6 5bis 5bis 5 5bis 6 5bis 5 5bis 6 5ter 5ter 5 5ter 6 5ter 5 5ter 6 5bis 5ter 5 5bis 5ter 5bis 5ter 6 5 5bis 5ter 6 For SACCH blocks where no System Information is defined fill frames are transmitted see GSM 04 06 EN LZT 720 0008 P2A 2001 11 28 227 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 230: ...Broadcast This page is intentionally left blank 228 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 231: ...ssages on PCH EMLPP priority information in the PAGING_REQUEST Channel combinations GSM 05 02 6 4 supported iv FCCH SCH BCCH CCCH v FCCH SCH BCCH CCCH SDCCH 4 0 3 SACCH C4 0 3 PAGING_COMMAND messages from BSC with the following MS IDENTITY Id type are supported IMSI International Mobile Subscriber Identity TMSI Temporary Mobile Subscriber Identity IMSIs and TMSIs are queued for scheduled transmiss...

Page 232: ...n and retransmission see Section 22 2 4 on page 231 If two IAs are received in one IMMEDIATE_ASSIGN_COMMAND message from the BSC they will be queued together and sent after each other 22 2 3 Immediate Assignment Sent By means of IMMEDIATE ASSIGNMENT SENT procedure the RBS indicates to the BSC if ordered when an IMMEDIATE_ASSIGNMENT or IMMEDIATE_ASSIGNMENT_EXTENDED is sent on air interface The RBS ...

Page 233: ...Logical Channels GSM 05 02 3 3 3 AGCH Access Grant Channel PCH Paging Channel Dequeuing and Scheduling The RBS dequeues and transmits messages from the CCCH queue system in the following order of priority where a has the highest priority a SYSTEM_INFORMATION b IMMEDIATE_ASSIGNMENT GSM 04 08 9 1 18 GSM 04 08 9 1 19 c IMMEDIATE_ASSIGNMENT_REJECT GSM 04 08 9 1 20 d IMMEDIATE_ASSIGNMENT for Paging Gro...

Page 234: ...nded paging is used IARs originating from different paging groups may be packed into the same IMMEDIATE_ASSIGNMENT_REJECT message PAGING_REQUEST messages As many IMSIs and TMSIs as possible for a certain paging group will be packed into one PAGING_REQUEST message type 1 2 or 3 If Extended paging is used see section Selection of Page Mode below IMSIs and TMSIs originating from two different paging ...

Page 235: ...om Paging reorganization to normal operation which means that normal paging or extended paging is used If an IMMEDIATE_ASSIGN_COMMAND is received with page mode set to Same as before the page mode is not changed Note It should be made clear that it is the L3 immediate assign message carried within the IMMEDIATE_ASSIGN_COMMAND that contains the page mode parameter Retransmission of Messages A copy ...

Page 236: ... assigns in use ON or not in use OFF CCCH options IPT3 ON OFF Paging request type 3 used OFF or not used ON DRX_DEV_MAX 0 100 0 100 allowed use of extended page mode per paging group for example 50 means that Page mode Extended is used every other time it is possible to use it 22 2 5 Channel Request by MS By means of the CHANNEL REQUEST BY MS procedure GSM 08 58 5 1 the RBS detects channel request...

Page 237: ...queues in use The length is calculated as Length 14 PQMax 10 where PQMax the highest paging group queue in use 22 3 2 Immediate Assign Max number of elements in the IA queue 10 and in the IAR queue 10 in the IAPGQ 3 and in the IRPGQ 4 22 3 3 CCCH Dequeuing and Transmission A number of stacks are used for message retransmission One IA stack number of elements 4 Paging stacks one stack paging queue ...

Page 238: ...Common Control Channel Handling This page is intentionally left blank 236 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 239: ...st Dummy burst Access burst 23 2 2 Supported Logical Channels The following logical channels are supported GSM 05 02 3 BCCH Broadcast Control Channel CBCH Cell Broadcast Channel CCCH Common Control Channel comprising AGCH Access Grant Channel PCH Paging Channel RACH Random Access Channel FACCH F Fast Associated Control Channel full rate FACCH H Fast Associated Control Channel half rate FCCH Freque...

Page 240: ...Control Channel PCCCH Packet Common Control Channel PACCH Packet Associated Control Channel PTCCH D Packet Timing Advance Control Channel downlink PTCCH U Packet Timing Advance Control Channel uplink PRACH Packet Random Access Channel PDTCH Packet Data Traffic Channel 23 2 3 Supported Channel Combinations The following channel combinations are supported GSM 05 02 6 4 Circuit Switched i TCH F FACCH...

Page 241: ...TCH PACCH PTCCH xii PCCCH PDTCH PACCH PTCCH xiii PDTCH PACCH PTCCH Each channel combination for packet data is transmitted on PDCH the physical channel 23 2 4 Channel Coding Channel Coding downlink is performed according to GSM 05 03 3 Traffic Channels GSM 05 03 4 Control Channels GSM 05 03 5 Packet Switched Channels 23 2 5 Channel Decoding Channel Decoding uplink is performed according to GSM 05 ...

Page 242: ...o GSM 05 02 5 2 3 Normal bursts GSM 05 02 5 2 4 Frequency correction bursts GSM 05 02 5 2 5 Synchronisation bursts GSM 05 02 5 2 6 Dummy bursts GSM 05 02 5 2 7 Access bursts 23 2 9 Multiplexing Multiplexing of bursts into TDMA frames is performed according to GSM 05 02 Table 1 GSM 05 02 Table 2 GSM 05 02 Table 3 GSM 05 02 Table 4 GSM 05 02 Table 5 GSM 05 02 Table 6 GSM 05 02 Table 7 240 485 EN LZT...

Page 243: ...esource The functional entity responsible for all Air interface functions for one Air timeslot The Air timeslot resource can be seen as 1 8 of a TRX Terrestrial Traffic Channel Physical channel used for communication with remote transcoder rate adapter RTC When the transcoders rate adapters are positioned remote from the RBS they are called RTCs In this document the RTC is a part of BSC but is con...

Page 244: ...is is terminated when a traffic channel is enabled on the air timeslot resource 24 3 2 Terrestrial Link Supervision The function Terrestrial Link Supervision TLS supervises a terrestrial link 16 kbps for a traffic channel and decides when a connection is considered lost The TLS function is set to On or Off for an idle or active subchannel TLS on idle subchannel is set On 16 kbps resource in IDLE s...

Page 245: ... signalling Idle pattern is transmitted Idle pattern is generated as specified in GSM 08 54 This function supervises the downlink TRAU frames The synchronization bits have to be correct and the received frame type must be expected The synchronization pattern for an idle subchannel is generated either in the TRA or the BTS loop The BTS accepts either one of the synchronization patterns If disturban...

Page 246: ...provements Full rate speech is either terminated by the RF Channel Release function or the Mode Modify function when Data or Signalling services are requested Subjective Speech Quality Improvements The RBS supports subjective speech quality improvements that go beyond what is required in the GSM recommendations The objective is to avoid unpleasant noise effects that would result from e g normal de...

Page 247: ...ta in the RTC the RBS issues TRAU frames of type Idle Speech and channel type Full Rate according to GSM 08 60 The rate adaptation is split up between RTC and RBS and is performed as described in GSM 08 20 and GSM 08 60 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 i...

Page 248: ...n 68 ms The values are including additional delay due to the measuring method as described in GSM 11 20 7 2 6 table 7 2b 24 4 2 Full Rate Data Transparent data services supported 14 4 kbits s 9 6 kbits s 4 8 kbits s 2 4 kbits s 1 2 kbits s 1200 75 bits s 600 bits s Non transparent data services supported 14 4 kbits s 9 6 kbits s The round trip delay for a full rate data channel introduced by the R...

Page 249: ...2 4 kbits s 1 2 kbits s 1200 75 bits s 600 bits s Non transparent data services supported 4 8 kbits s The round trip delay for a half rate data channel introduced by the BTS is Less than 284 ms for TCH H4 8 and TCH H2 4 this includes TCH H1 2 TCH H1 2 75 and TCH H0 6 as well Less than 315 ms for TCH H4 8NT The values are including additional delay due to the measuring method as described in GSM 11...

Page 250: ...Speech and Data Services This page is intentionally left blank 248 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 251: ...on active subchannel is set off Terrestrial link used for PDCH traffic No supervision If for an activated channel disturbances on the link between RBS and PCU result in a connection lost decision a CONNECTION FAILURE message with cause value remote PCU failure is also sent to the BSC This is done only when the TLS active flag is indicating supervision on 25 2 2 PCU RBS LInk Quality Supervison The ...

Page 252: ...on to the PCU RBS supervises the frame synchronization of the GSL by checking the PCU frames of type traffic To minimize the downlink delay between the Air interface and the PCU RBS continuously monitors and if necessary adjusts the alignment between the Radio Blocks sent on Air Interface and the PCU Frames received on GSL The procedure runs autonomously as long as the GSL is active To minimize th...

Page 253: ...ion and transmission on associated channels GSM 08 58 4 1 Preconditions and Initiation 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 viii TCH F FACCH F SACCH M ix TCH F SACCH M x TCH FD SACCH MD Packet Switched A 52 multiframe is supported for PDCH The following ...

Page 254: ...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 6 kbit s non transparent TCH H4 8 Half rate data 4 8 kbit s non transparent For the transparent service TCH F14 4 Full rate data 14 4 kbit s transparent TCH F9 6 Full rate data 9 6 kbit ...

Page 255: ...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 4 Full rate data 1 2 kbit s transparent Bi directional TCH F2 4 Full rate data 600 bit s transparent Bi directional TCH F2 4 Full rate data 1200 75 bit s transparent Bi directional TCH FS Full rate speech GSM sp...

Page 256: ...ent 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 4 Half rate data 1200 75 bit s 1200 network MS 75 MS networ transparent Note TCH F4 8 non transparent is only hardware supported Classification see section Concepts of elements common for all activation types Channel Identification Ignored BS Power ...

Page 257: ...ved by the SACCH FILLING INFORMATION MODIFY procedure described in Broadcast Multislot configuration secondary channels GSM 08 58 4 1 The activation for the multislot configuration procedure is in accordance with GSM 08 58 4 1 Encryption Information Optional SACCH Information Optional If the parameter SACCH Information is present the contents will be used for this channel group instead of the info...

Page 258: ...er is a Channel_Activation_Negative_Acknowledgement P003011A RBS BSC CHAN ACTIV ACK CHAN ACTIV OR CHAN ACTIV NCK MS Figure 121 Channel activation message 26 3 Adaptive Frame Alignment Purpose To ensure that the burst received in the RBS from an MS is in time alignment Precondition and initiation See Channel Activation above Description This function ensures that the burst received in the RBS from ...

Page 259: ...ACCH block GSM 04 04 7 1 The access delay measurements on all normal bursts that are received since the last calculation one SACCH reporting period The actual used by MS TA value which is received in L1 header GSM 04 04 7 2 of the uplink SACCH block The previous unit ordered TA value to MS The ordered TA value must not be changed more than 1 step from the TA GSM 05 10 5 previously ordered 26 4 Asy...

Page 260: ...ABs for channel combination i Two out of four acceptable Handover access messages ABs for channel combination v and vii The TA difference between acceptable Access Bursts must be less than or equal to 4 bit periods On acceptance of the MS handover access the RBS takes the following actions Opens all logical channels for transceiving on the air start Normal Burst reception and starts active channel...

Page 261: ...he delay gives information about the Timing Advance which is included in the Physical Information to the MS and the Handover Detection message to BSC 26 5 RF Channel Release Purpose To release a radio channel which is no longer needed Precondition and Initiation See Channel Activation above The function is initiated when the RBS receives a Channel_Release message from BSC Description All traffic a...

Page 262: ...s 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 P003015A RBS BSC CHAN REL DEACT SACCH MS Figure 125 Deactivate SACCH 26 7 Link Establish Indication Purpose To establish a link layer connection between MS and network 260 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio ...

Page 263: ... is the MS that takes initiative of the establishment This is done when the mobile for example wants to send a measurement report to the network P003016A RBS BSC EST IND MS first SABM UA Figure 126 Link establish indication The Normal Establishment is utilized for SAPI 0 links in conjunction with a normal assign or handover as well as for SAPI 3 links at SMS point to point The Contention Resolutio...

Page 264: ...ends a DISC frame on a link layer connection in multiframe mode Multiframe mode means that an answer UA unnumbered acknowledgment is required The RBS then sends a RELease INDication message to BSC to confirm the release of the link layer It is the mobile that takes initiative for the release This is used when the signalling between MS and network is done and the link is no longer needed P003017A B...

Page 265: ...on reception of the acknowledgment UA frame from MS RBS sends an ESTablish CONFirm message to BSC It is the network BSC that takes initiative for the establishment Measurement reports are one type of message which can be sent on the signal link P003018A RBS BSC EST CONF MS SABM UA EST REQ Figure 128 Link establishment request Messages queued for transmissions are lost if the link is re established...

Page 266: ...rk BSC that takes initiative for the release This is used when the signalling between MS and network is done and the link is no longer needed P003019A RBS BSC REL CONF MS DISC UA or DM REL REQ Figure 129 Link release request Messages queued for transmissions are lost if the link is re established When the link is established an ESTablish CONFirm GSM 08 58 3 5 is to be sent to the BSC The Link Rele...

Page 267: ...rdance with GSM 08 58 3 5 to the MS inside an I information field frame Transparent transmission in acknowledge mode requires that multiframe mode GSM 08 58 3 1 3 2 has been established With multiframe mode means that an answer is needed In this case an RR frame receiver ready is sent back as a confirmation to the RBS The message is in this case sent from network BSC to MS One example when this is...

Page 268: ...contains the received transparent layer 3 message from MS The message is in this case sent from mobile to network BSC One example when this is used is for sending an SMS message to another subscriber P003021A RBS BSC MS I frames RR frames DATA IND Figure 131 Transparent message reception Transparent transmission in acknowledge mode requires that multiframe mode GSM 08 58 3 1 3 2 has been establish...

Page 269: ...rmation concerning what transmitting power to use 26 14 LAPDm Purpose To provide a reliable signalling link Precondition and initiation Channel combinations supported are defined in section Channel Activation above LAPDm supports two modes of operation unacknowledged acknowledged Both SAPI 0 and SAPI 3 are supported establishment of SAPI 3 requires that SAPI 0 is established SAPI 0 SAPI 0 is used ...

Page 270: ...rms to GSM 04 06 This function is used to send signalling information in between MS and RBS on the air interface 26 15 Channel Reactivation Purpose To reactivate an already activated dedicated channel resource with new parameters Precondition and Initiation The function is initiated when a CHANNEL_ACTIVATION GSM 08 58 4 1 message is received from BSC Supported channel combinations GSM 05 02 6 4 i ...

Page 271: ...on transparent For the transparent service TCH F14 4 Full rate data 14 4 kbit s transparent TCH F9 6 Full rate data 9 6 kbit s transparent TCH F4 8 Full rate data 4 8 kbit s transparent TCH F2 4 Full rate data 2 4 kbit s transparent TCH F2 4 Full rate data 1 2 kbit s transparent 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 transp...

Page 272: ...ent Bi directional TCH F2 4 Full rate data 1200 75 bit s transparent Bi directional TCH FS Full rate speech GSM speech alg Ver 1 Uni directional TCH FS Full rate speech GSM speech alg Ver 2 Uni directional TCH F14 4 Full rate data 14 4 kbit s non transparent Uni directional TCH F9 6 Full rate data 9 6 kbit s non transparent Uni directional TCH H4 8 Half rate data 4 8 kbit s non transparent Uni dir...

Page 273: ...sification see section Concepts of elements common for all activation types Channel Identification Ignored BS Power Optional MS Power Required BS Power Parameters Rejected MS Power Parameters Rejected Physical Context Rejected Normal Assignment GSM 08 58 4 1 The optional elements for Normal Assignment are Encryption Information Optional Handover Reference Rejected Timing Advance Required SACCH Inf...

Page 274: ...ring the reactivation information flows are not interrupted If the reactivating of the channel is successful the RBS answers with Channel_Activation_Acknowledgement Otherwise if the channel for some reason cannot activate the answer is a Channel_Activation_Negative_Acknowledgement P003011A RBS BSC CHAN ACTIV ACK CHAN ACTIV OR CHAN ACTIV NCK MS Figure 132 Channel reactivation 26 16 Power Informatio...

Page 275: ...rface The RBS will immediately without waiting for the next measurement period change output power to BS Power Level The MS Power Level will be sent to the MS in the L1 header on SACCH as soon as possible If the RBS receives a value that would result in a setting below the lowest allowed level the power is set to the lowest allowed level The function is terminated when Power Information has been a...

Page 276: ...Call Control This page is intentionally left blank 274 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 277: ... PCU Frame is transported on Abis interface and contains an RLC MAC Block and control information Radio Block A Radio Block is transported on air interface and contains an RLC MAC Block and a BCS RLC MAC Block An RLC MAC Block contains a MAC Header and an RLC Data or an RLC MAC Control Block as defined in GSM 04 60 10 27 3 Functions 27 3 1 Radio Block Transmission Purpose Radio Block Transmission ...

Page 278: ...ed by a PCU frame of type PCU DATA IND received on Abis GSL interface Description The RBS receives a Radio Block four normal bursts on air interface and performs demodulation according to the previously stored channel mode Deinterleaving and channel decoding is performed according to received steal flags GSM 05 03 5 The RBS performs the following PDCH measurements on a block basis Block quality CR...

Page 279: ...g advance values using the logical channel PTCCH U and PTCCH D scheduled on PDCH according to GSM 05 02 Preconditions and Initiation The function is inititated when a CHANNEL_ACTIVATION message with element Activation Type Packet Channel is received on Abis RSL interface Description The RBS receives an access burst on PTCCH U on air interface The access burst is demodulated decoded GSM 05 03 5 2 a...

Page 280: ...GPRS Physical Link Layer This page is intentionally left blank 278 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 281: ...efer to the table of contents to find the appropriate chapter 28 2 Concepts Nominal Power The power level defined during configuration of the RBS TRXs 28 3 Functions 28 3 1 Base Station Power Control at Channel Activation By means of the TRANSMISSION POWER CONTROL procedure GSM 08 58 4 9 the BSC defines the TRX transceiver transmission power level The RBS supports Interpretation of the BS Power in...

Page 282: ... attempt to change the BS Power level for a channel on a BCCH carrier is accepted but has no effect 28 3 2 Base Station Power Control for an Active Channel By means of the TRANSMISSION POWER CONTROL procedure GSM 08 58 4 9 the BSC defines the TRX transmission power level The RBS support Interpretation of BS_POWER_CONTROL message from BSC Storage of BS Power Adjustment of BS power level Supported c...

Page 283: ...M 05 08 8 4 RXLEV Measure of signal strength as defined in GSM 05 08 8 1 4 RXLEV_FULL RXLEV measured over a whole SACCH multiframe RXLEV_SUB RXLEV measured over a subset of a SACCH multiframe RXQUAL Measure of signal quality as defined in GSM 05 08 8 2 4 RXQUAL_FULL RXQUAL measured over a whole SACCH multiframe RXQUAL_SUB RXQUAL measured over a subset of a SACCH multiframe 29 3 Functions 29 3 1 Ac...

Page 284: ...d TCH S 8 SID 4 SACCH ii All TCH and SACCH frames 48 TCH 4 SACCH TCH Data 10 SID 4 SACCH iii TCH S 8 SID 4 SACCH All TCH and SACCH frames 96 TCH 4 SACCH TCH Data 10 SID 4 SACCH v vii All SDCCH and SACCH frames 8 SDCCH 4 SACCH Same frames as for RXLEV_FULL and RXQUAL_FULL The SID frames for the TCH channels are defined in GSM 05 08 8 3 The Speech Quality Index SQI is an index which shall be a measu...

Page 285: ... The average value is classified into one of five Interference Level Bands Results from idle channel measurements are reported via the Abis message RF_RESOURCE_INDICATION GSM 08 58 8 6 1 This is done when the first value has been calculated and thereafter when the calculated average value is classified into a new Interference Level Band 29 4 Operational Conditions The measurements of R M S signal ...

Page 286: ...Channel Measurements This page is intentionally left blank 284 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 287: ...2 version 4 0 1 GSM 06 22 GSM 06 22 phase 2 version 4 0 0 GSM 06 31 GSM 06 31 phase 2 version 4 0 0 GSM 06 32 GSM 06 32 phase 2 version 4 0 1 GSM 06 41 GSM 06 41 phase 2 version 4 0 0 GSM 06 42 GSM 06 42 phase 2 version 4 0 0 GSM 06 81 GSM 06 81 phase 2 t b d GSM 08 20 GSM 08 20 phase 2 version 4 1 0 Whenever a reference is made to a function described in another chapter please refer to the table ...

Page 288: ...FACCH H 0 1 SACCH TH 0 1 viii TCH F FACCH F SACCH M ix TCH F SACCH M x TCH FD SACCH MD The downlink DTX function is enabled when a CHANNEL_ACTIVATION message or a MODE_MODIFY message with the DTX downlink indicator set is received from the BSC The downlink DTX function for speech is initiated when a speech frame containing comfort noise parameters is received from the RTC Remote Transcoder The dow...

Page 289: ...output power is turned off during periods of idle data transmission as described in the section DTX handling speech above 30 2 2 DTX Uplink The DTXu indicator of element Channel Mode in the CHANNEL_ACTIVATION or MODE_MODIFY messages from the BCS is ignored since the RBS is always prepared to handle uplink DTX The uplink DTX function is supported for the following services TCH speech full rate GSM ...

Page 290: ...ch 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 288 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 291: ...ing available Baseband hopping Synthesizer hopping 31 1 References GSM 08 58 GSM 08 58 phase 2 version 4 2 0 GSM 05 02 GSM 05 02 phase 2 version 4 3 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 31 2 Concepts Baseband Hopping Each transmitter will always transmit on the same frequency The physical cha...

Page 292: ...ncy can be frequency hopping when baseband hopping is used The following configuration parameters are used for administration of frequency hopping the parameters are used in the frequency hopping algorithms as described in GSM 05 02 6 2 3 Table 152 Configuration parameters Parameter Supported values Description HSN GSM 05 02 6 2 2 Hopping Sequence Number 0 cyclic hopping 1 63 random hopping MAIO G...

Page 293: ...ase refer to the table of contents to find the appropriate chapter 32 2 Start Encryption at Channel Activation Purpose To initiate encryption mode on a dedicated logical channel Precondition and initiation The function starts encryption if element Encryption Information is provided in the CHANNEL_ACTIVATION message Element Encryption Information is optional when the Channel Activation types are No...

Page 294: ...minated when a Channel_Activation_ Acknowledge is sent to BSC 32 3 Encryption Mode Change Purpose This function is used to change the encryption mode key and algorithm on an established dedicated channel Precondition and initiation Encryption Mode change is defined in the section above This function is initiated when RBS receives an Encryption Command from BSC Description The RBS starts decipherin...

Page 295: ...r activated or deactivated The function is initiated when the RBS receives a MODE_MODIFY_COMMAD message from BSC Description The message MODE_MODIFY_COMMAD contains the new key and algorithm to use The ciphering key and algorithm identifier can be changed to any valid value If Algorithm Identifier is No encryption shall be used the RBS updates the key by clearing the stored key and ciphering is st...

Page 296: ...Encryption This page is intentionally left blank 294 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 297: ...CCH F SACCH M ix TCH F SACCH M x TCH FD SACCH MD RBS actions Interpretation of MODE_MODIFY message from BSC Channel Mode Modification The function is initiated when a MODE_MODIFY message GSM 08 58 8 4 9 is received from BSC Any transition between the following full rate channel modes GSM 08 58 9 3 6 is supported TCH F Signalling TCH FS Full rate speech GSM speech alg ver 1 TCH FS Full rate speech ...

Page 298: ...F4 8 Full rate data 4 8 kbit s transparent Bi directional TCH F2 4 Full rate data 2 4kbit s transparent Bi directional TCH F2 4 Full rate data 1 2 kbit s transparent Bi directional TCH F2 4 Full rate data 1200 75 bit s transparent Bi directional TCH F2 4 Full rate data 600 bit s transparent Bi directional TCH FS Full rate speech GSM speech alg ver 1 Uni directional TCH FS Full rate speech GSM spee...

Page 299: ...tional element Encryption information RBS checks the availability of the requested resources and acknowledges the MODE_MODIFY message by sending a MODE_MODIFY_ACKNOWLEDGE message GSM 08 58 8 4 10 or a MODE_MODIFY_NEGATIVE_ACKNOWLEDGE message GSM 08 58 8 4 11 to the BSC The MODE_MODIFY_ACKNOWLEDGE message to BSC is not related to the Air Interface That is the acknowledgement will be sent before the...

Page 300: ... from reception of a MODE_MODIFY command until the command is acknowledged MODE_MODIFY_ACKNOWLEDGEMENT or MODE_MODIFY_NEGATIVE_ACKNOWLEDGEMENT is 25 ms 298 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 301: ...SM 04 04 phase2 version 4 0 0 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 34 2 Functions 34 2 1 MS Power Control at Channel Activation Supported channel numbers Bm ACCH Lm ACCH SDCCH 8 ACCH SDCCH 4 ACCH and TN 0 Supporte...

Page 302: ...L message Storage of MS power level Order MS to set the commanded power level Description The function is initiated when an MS_POWER_CONTROL message GSM 08 58 8 4 15 containing MS Power is received from the BSC for an active dedicated channel The value of the ordered MS Power GSM 08 58 9 3 13 is passed transparently to the MS The MS Power parameters GSM 08 58 9 3 31 is not supported by the RBS RBS...

Page 303: ... 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 35 2 Functions 35 2 1 SMS Point to Point Mobile Terminated RBS supports Establishment of a SAPI 3 Service Access Point Identifier 3 link Transparent transmission of SMS messages Release of a SAPI...

Page 304: ... SMS P P MO function is initiated when a SABM frame link layer connection is received from an MS SMS P P MO messages are transmitted as transparent L3 messages in acknowledged mode on a SAPI 3 link between the network and the MSs SAPI 3 link establishment and release is made on request from MS The function is terminated when a RELEASE_INDICATION message is sent to the BSC as a result of a SAPI 3 l...

Page 305: ...e field contains a sequence number used to check the order of arrival The correct order of arrival is defined as 0 1 2 3 The SMSCB messages are transmitted in four consecutive multiframes GSM 05 02 6 5 4 during periods when TB 0 1 2 and 3 CBCH Fill frames are transmitted on the CBCH channel when TB 0 1 2 and 3 and no SMSCB message is available for transmission Nothing is transmitted for TB 4 5 6 a...

Page 306: ...Short Message Service This page is intentionally left blank 304 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 307: ... defines a time window during which the signal strength relationship between the two diversity channels is observed before any decision regarding a possible disturbance is taken Channel Utilisation Threshold The Channel Utilisation Threshold CUT is the criterion for an active dedicated channel to be regarded as utilised It is that the receiver signal strength is above a certain level on at least o...

Page 308: ...TCH are restricted to the subset of 4 SACCH frames and 8 SID Silence Descriptor TDMA frames as defined in GSM 05 08 The CURiis calculated for the TS during each observation period The SSIivalue is calculated for the TS during each observation period The CURi and the SSIi values from all TSs are then evaluated together The corresponding transceiver gross measures are calculated for each observation...

Page 309: ...old 96 dBm Minimum channel utilisation ratio 5 Disturbance threshold 12 dB The disturbance filter characteristics will give the time to alarm If 100 of the observation periods causes a disturbance the time to alarm will be 50 minutes If the disturbance ratio is less than 50 no alarm will be raised If 100 of the observation periods indicates no disturbance the alarm will be terminated after 100 min...

Page 310: ...Diversity Supervision This page is intentionally left blank 308 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 311: ... P005514B Sync established 1 Only macro Figure 134 Synchronization function states Short term stability of the timing is achieved by the RBS itself The long term stability of the RBS will rely on an external or an optional synchronization reference The external synchronization reference is taken from one of the two PCM interfaces in the transport network interface or from another RBS via the Exter...

Page 312: ...ster work together according to the master and slave logic see the figure below One of the RBSes is selected as master by the BSC and the other RBSes in the RBS cluster are configured as slaves The master RBS synchronizes towards the PCM reference or the optional reference The slave RBS es synchronizes towards the master RBS via the ESB Master RBS P005515A RBS Slave RBS s ESB RBS RBS Figure 135 Ma...

Page 313: ...n is initiated by two separate events Synchronization established When synchronization is re established after hold over operation Description The RBS has its own short term stable oscillator this internal source is locked to the reference source The generated frequency is used for both RF frequency and for clocking of the timebase counters see GSM 05 10 3 and JTC PCS 7 1 The same source is used f...

Page 314: ...ce Precondition and Initiation The PCM reference must be marked available in order to be considered for selection The function is initiated by one of the following events Start up of RBS Hold over expired time is reached see Hold over Operation Synchronization reference source is re established in Hold over state At TF Timing Function configuration When locking to the reference source is terminate...

Page 315: ...ence source has been selected or if the executive PCM reference regains its synchronization signal before a reselection is attempted or if a reselection is made to another synchronization source There is no momentary change in phase or frequency of the RBS caused by reselection of synchronization source 37 5 Hold Over Operation Purpose If the reference signal is considered not to be usable the RBS...

Page 316: ...signal Precondition and Initiation The function is initiated when synchronization to the reference source is established Description Depending on if the PCM interface or the Optional reference source or another RBS is used as a reference the following criteria are used for evaluation of the reference source PCM interface as reference LOS Loss Of Signal LOF Loss Of Frame alignment or AIS Alarm Indi...

Page 317: ...e PCM interface PCM reference presence detected by physical interface Time a time out set at initiation The value of the oscillator control signal Locking to the optional reference Non failure status of the optional sync function Time a time out set at initiation The value of the oscillator control signal Locking to other RBS ESB synchronization presence Time a time out set at initiation The value...

Page 318: ...iguration is carried out by the Functionality Administration function 37 9 ESB Distribution Purpose This function defines that the timing information is distributed on the ESB interface when TF mode is defined or changed to master Precondition and Initiation The function is initiated by two separate events At TF enable when TF mode is defined to master At TF configuration in enabled state when TF ...

Page 319: ...cv for each slave TFcv master ttxd slave ttxd tesb tesb is the distribution delay on the external synchronization bus between the master and the slave There can be different delays for each slave Elements that affect this delay are cable length s cable type cabinet type and the RBS cluster topology ttxd is the transmitter chain delay delays in transmitter combiner feeder and antenna There can be d...

Page 320: ...Synchronization This page is intentionally left blank 318 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 321: ...2 Radio Reception Purpose To receive an RF signal and restore the bit stream that constitutes a burst Precondition and initiation The ATSR must be in traffic The reception initiates when the ATSR is taken into traffic Description The RBS receives an RF signal from the MS on the air interface First the signal is filtered in order to isolate the targeted MS signal from other transmission Then the si...

Page 322: ...r 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 The receiver uses the weaker signal together with the stronger signal with a factor proportional to SNR Signal to Noise Ratio on each antenna 320 485 EN LZT 720 0008 P2A 2001 ...

Page 323: ...02 Phase 2 version 4 6 0 The references JTC 1 JTC 8 are chapters in the document Volume 1 PCS 1900 Physical Layer 1 The specification is labelled JTC AIR 94 08 01 231R3 JTC 1 Physical Layer Overview JTC 2 Multiplexing and Multiple Access on the Radio Path JTC 3 Forward Error Protection Coding and Interleaving JTC 4 Modulation JTC 5 Radio Transmission and Reception JTC 6 Radio Subsystem Link Contro...

Page 324: ... filtering Duplex filtering The TX reference point X is defined as the point where the TX antenna signal crosses the RBS border that is the connector for the antenna feeder See Figure 137 on page 322 01_0467A RBS TX TX TX Combining system filtering X X TX reference point Figure 137 TX reference point X When the RBS comprises an antenna mounted equipment the TX reference point is the antenna mounte...

Page 325: ...nd GSM 1800 and JTC 7 for GSM 1900 BCCH carrier filling The output power for a transmitter sending the BCCH frequency is constant and equal to the nominal output power except for the power ramping between bursts See GSM 05 08 7 1 for GSM 900 and GSM 1800 and JTC 6 5 1 for GSM 1900 During idle timeslots dummy bursts are transmitted The dummy burst is defined in GSM 05 02 5 2 6 Transmitter filling T...

Page 326: ...ult is reported from the TX via fault reports over A bis 39 4 Operational Conditions Frequency band Transmitters for the GSM 900 band are capable of operating in the extended GSM 900 frequency band 925 960 MHz The combining system supports the primary GSM 900 band 935 960 MHz or the extended GSM 900 frequency band see GSM 05 05 2 depending on equipment Transmitters for the GSM 1800 band operate in...

Page 327: ...ut 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 EN LZT 720 0008 P2A 2001 11 28 325 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 328: ...Radio Transmission This page is intentionally left blank 326 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 329: ...lues for each frequency The number of times each frequency has been measured on is also reported 40 1 References GSM 05 05 40 2 Concepts Percentile value The proportion of samples in a distribution An example The 90 percentile value for a distribution is the value for which 90 percent of the samples have a value equal to or less than the percentile value 40 3 Functions 40 3 1 FAS configuration A F...

Page 330: ...encies may be underrepresented if there isn t always time to measure on them all 10 The measurements are as equally distributed as possible over all available time slots 11 The measurements are as equally distributed as possible in the multiframe structure except for active channels where the positions are fixed 12 The signal strength of each frequency is measured during one burst in the same way ...

Page 331: ...reported as zero 40 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 EN LZT 720 0008 P2A 2001 11 28 329 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 332: ...Frequency Allocation Support This page is intentionally left blank 330 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 333: ...table of contents to locate the relevant information 41 2 Concepts RU Replaceable Unit An RU is the smallest unit that can be handled on site or in a repair centre and about which information can be retrieved via OMT or BSC Main RU Main Replaceable Unit A main replacable unit contains one or more processors to which software can be downloaded from the BSC A Main RU is classed either as CMRU or DMR...

Page 334: ...ameters for OM bus 9 define OM address 10 link establish functions for Sub RUs connected to DMRU 11 link establish functions for Sub RUs connected to CMRU 12 update RBS database for Sub RUs connected to CMRU 13 link establish functions for all expected DMRUs 14 update RBS database for all expected DMRUs 15 update RBS database for Sub RUs connected to DMRU 16 wait for expected Passive RUs 17 intern...

Page 335: ...s associated with a RU are temporarily turned on for a minimum of 2 seconds during the initial restart of that RU This allows visual identification of any faulty indicators 41 4 2 Capabilities The start time is defined as the time elapsed from when the power is turned on after having been off or from the reception of reset reset button pushed or BSC reset order received to when the RBS is ready to...

Page 336: ...Restart and Recovery This page is intentionally left blank 334 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 337: ... required for software download Software download while in traffic The RBS can perform download of software without affecting normal operation Traffic is affected only when switching over to the downloaded software 42 1 Concepts File Package A set of individual software files which together constitute a revision of the software required by an entire RBS or by parts of the RBS File Revision The fil...

Page 338: ...re architecture for example the CDUs are Sub RUs 42 2 Functions RBS SW file 01_0285A Distributed main RU Central main RU File package A bis Figure 139 Overview of function change 42 2 1 Software Storage Every Main RU is equipped with both volatile and non volatile memory Application software either downloaded via the A bis interface transferred internally or installed during manufacture is stored ...

Page 339: ... are downloaded Each individual file is downloaded only once thus minimising the software download time required Note that this is an improvement compared to the general A bis concept downloading a software file several times once for each Main RU needing it Loading software to a Main RU is allowed in any state even while operational The transfer of a software file is initiated and performed via t...

Page 340: ...e A BSC R7 will answer with a reject message NEGOTIATION_REQUEST_NAK to the NEGOTIATION_REQUEST message as it is not supported by BSC R7 The BTS will then adapt to IWDs according to BSC R7 when a NEGOTIATION_REQUEST_NAK message is received 42 3 Operational Conditions 42 3 1 Operation and Maintenance The visual indicators relevant to Function Change are described in chapter Operation and Maintenanc...

Page 341: ...ONFIGURE REQUEST ACK 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 AO Application Object An abstract subclass of MO which provides part of the functionality of a BTS MO Managed Object The BSC manages the O M of the RBS via the A bis O M Interface The RBS equipment is seen as MOs by the BSC Th...

Page 342: ...an AO instance that instance must be connected to its associated SO instance This is performed by a command over the A bis OML and includes both of the following Connect an AO to an SO Disconnect an AO from an SO 43 3 2 Application Object Configuration Each AO has a number of associated configuration parameters which control the way in which it functions An AO has two states relevant to configurat...

Page 343: ...guration failed is returned Enable Enable attempts to activate an AO with the current configuration parameters When an enable request is received via A bis this function checks that all preconditions for a change to enabled state are satisfied All required configuration parameters must be previously set by one or more configuration procedures Configuration parameters must be consistent with each o...

Page 344: ...ral function which is implicitly used by all functions initiated on the Abis O M interface It is performed after the general Format Check The function must not be explicitly refered to Layer 3 uplink Elementary Procedures Uplink EPs are those EPs initiated by the RBS All functions within the RBS which initiate uplink EPs use this function to provide supervision as defined below An initiated EP is ...

Page 345: ...retransmissions Layer 3 supervision is terminated 43 4 Operational Conditions 43 4 1 Operation and Maintenance The visual indicators relevant to Functionality Administration are described within the context of Operation and Maintenance Support EN LZT 720 0008 P2A 2001 11 28 343 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 346: ...Functionality Administration This page is intentionally left blank 344 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 347: ...tecture the DXU is the CMRU DMRU Distributed Main RU A Main RU is said to be distributed if it is subordinate to the central main RU CMRU EDMRU Energy DMRU An EDMRU is a DMRU that handles the energy control functionality of an RBS cabinet Extension Cabinet In a multiple cabinet configuration the Extension Cabinet is the cabinet without the SO CF The Extension Cabinet is connected to a master cabin...

Page 348: ...M actions are based on this logical model structure created in the BSC An MO does not necessarily have a one to one relationship with a physical unit in the RBS and the MO comprises either both HW and SW or SW only RFU Ready For Use Op State When in operational state Ready For Use the instance is started by the BSC with the correct SW RSSI Received Signal Strength Indicator RU Replaceable Unit An ...

Page 349: ...he CPU Reset button is pushed the unit itself and all its sub units will be reset Local Remote A Local Remote button can be found on the CMRU and TDMRU DXU and TRU The Local Remote button is used to change RU mode to Local or Remote For further description of the Local Remote button see Section 44 4 Change RU to Local Mode on page 347and Section 44 5 Change RU to Remote Mode on page 348 Test Test ...

Page 350: ...led indicator is turned on An external condition class 1 called Toggle Information is raised Limitations The status of the external condition Toggle Information is stored in RAM that is not affected by SW reset During start the Toggle Information is set if the Local Remote button is set to Local 44 5 Change RU to Remote Mode Purpose To establish a link towards the BSC Preconditions and Initiation ...

Page 351: ... the SO on Abis interface are released and stopped by RBS refer to Terrestrial Link Handling Functionality if they were started The Local Mode Indicator is turned on the Operational Indicator is handled see Section 44 15 Operational Indicator on page 354 and the Local remote button is enabled At the termination of the function the Local Mode Indicator will be turned on the Operational Indicator wi...

Page 352: ...on network by looping all traffic back to the BSC Preconditions and Initiation The MO state should be Disabled and the RU Mode Remote The Loop Control is initiated by the Loop Control command on the Abis interface Description The Loop Control procedure is a part of the automatic loop test of speech data links The Loop Test can be opened or closed on command from the BSC When the test loop is close...

Page 353: ... internally used within the RUs as the system time The system time is updated by the Calendar Time elementary procedure on Abis interface Calendar time is distributed to all main RUs System time is then updated for those RUs Calendar time is periodically requested and updated while layer 2 communication link is established The request interval is 24 hours The Calendar Time request function is term...

Page 354: ...r cabinet The Max Cooling can have the following two states ON Maximum Cooling OFF General Fan Speed regulation Maximum Cooling means that the fans are controlled to perform their maximum available cooling General Fan Speed regulation means that Maximum Cooling is switched off and the fans are controlled by a local algorithm The Maximum Cooling states are calculated from the supervised entities in...

Page 355: ...handling of the indicator is terminated Limitations When the CU of a CDU D has detected lost communication to both its superior RUs the CU restarts according to the Restart and Recovery functionality Flashing of the fault indicator is then not used for the CU Colour Red Position Main RUs DXU TRU ECU and sub RUs CDU PSU BFU ON One or more faults are detected in the RU FLASHING 0 5 Hz Running on Bas...

Page 356: ...tional states remote operational indication and operational information Purpose To indicate if the RU is considered Operational not Operational if BSC initiated configuration is in progress if SW is being received or if restart is pending after SW download Preconditions and Initiation Set Operational Indicator Applicable for any operational condition The function is initiated when the SW is starte...

Page 357: ...ates part RU in Remote Mode Colour Green Position Main RUs DXU TRU ECU and Sub RUs PSU BFU CDU States of the indicator ON The RU is considered Operational FLASHING 0 5 Hz Configuration activity initiated from the BSC which may take more than 10 seconds to complete in progress OR SW is being received OR Restart pending after SW download OFF The RU is considered Not Operational Priority FLASHING has...

Page 358: ...aster Cabinet is considered operational if SO CF at least one SO TRXC at least one AO RX and at least one AO TS are considered operational by the BSC set by the message OPERATIONAL _INFORMATION to each MO The Remote Operational Indication function is terminated when OPERATIONAL_INFORMATION_ACCEPT is sent on the Abis interface The TDMRU is considered Operational when SO TRXC AO RX and at least one ...

Page 359: ...t enabled OFF TX is enabled 44 17 Local Mode Indicator Purpose To indicate the current RU Mode Preconditions and Initiation Applicable for any operational condition The function is initiated when the SW is started Description After a restart the indicator is on until the Local Remote handling starts refer to the Restart and Recovery functionality When the RU is reset in any way the handling of the...

Page 360: ...ed when the RBS DB has been read during the start up sequence refer to Restart and Recovery functionality Description The External Alarms indicator indicates if any external alarm defined by the operator is active The External Alarm Indicator is controlled from External Alarms functionality and from Restart and Recovery functionality When the RU is reset in any way the handling of the indicator is...

Page 361: ...he power to the rest of the RBS is switched off OFF The environmental requirements are fulfilled 44 20 Battery Mode Indicator Purpose To indicate if the RBS is running on battery backup Preconditions and Initiation Applicable for any operational condition The function is initiated by the HW when the RU is started Description The Battery Mode indicator indicates if the RBS is running on mains power...

Page 362: ...ON Battery disconnected OFF Battery connected 44 22 AC Fault Indicator Purpose To indicate if the AC Supply is faulty Preconditions and Initiation Applicable for any operational condition The function is initiated by the HW when the RU is started Description The AC Fault indicator indicates if the AC Supply is faulty or not The AC Fault indicator is controlled from Power Supply functionality and f...

Page 363: ...t the unit is taken into Local operation The RU mode for the cabinet is changed to Local when the Abis fault report procedure is terminated When Local Mode has been entered the layer 2 communication links in Abis interface concerning the SO are released and stopped by RBS refer to the Terrestrial Link Handling functionality On the TRU the MO TX and MO TS are disabled if they were enabled The TX No...

Page 364: ...Operation and Maintenance Support This page is intentionally left blank 362 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 365: ...e table of contents to find the appropriate chapter OMT functions related to Installation Data Handling functions are described within the context of Operation and Maintenance Terminal 45 2 Concepts ARAE Antenna Related Auxiliary Equipment Auxiliary equipment affecting the antenna functionality e g active antennas 45 3 General The RBS database is stored in the CMRU which is a part of the RBS Some ...

Page 366: ...ission Interface Configuration Stores configuration information for the transmission interface and the TEI for the CMRU Access Operator via the OMT RBS Configuration Identifier Identifies the overall RBS configuration Access Operator via the OMT 45 4 2 Elements Found in the RBS and RU Databases RU Type Describes the RU type and the RU instance in detail Access Operator via the OMT RU Identity Incl...

Page 367: ...BS database needs to be transferred between the OMT and the RBS 45 5 2 Read Hardware Information This function makes it possible for the BSC to read detailed information from the hardware installed in the RBS for example Product number Revision Serial number Physical position 45 5 3 Read Information Element This function allows the RBS to read information elements in the RU and RBS databases 45 5 ...

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Page 369: ...st 46 3 1 Boot Test Purpose The Boot test is an initial test function that determines the functionality of the RBS hardware The test ensures that the application software can be started in the processor Preconditions and Initiation The Boot test is carried out before any normal application processes are started The function Restart and Recovery invokes the test Description Invoked by the function ...

Page 370: ...cation processes are started The function Restart and Recovery invokes the test Description There are two kinds of memory Read Write memory and a Read only memory The Read Write memory is supervised by parity checking A parity bit is added to the data and is chosen so that the number of 1 bits in the data is even or odd For example when using even parity the data 1011001 becomes 101101011 and the ...

Page 371: ... looks for expected traffic on the bus Traffic must be generated in absence of normal traffic Disturbances are reported to fault handling for filtering and fault detection 46 4 2 Supervision of Cables Purpose To detect removal of a cable Preconditions and Initiation Initiates automatically at start of application software Description All cables between the RUs are supervised Removal of a cable dur...

Page 372: ...s of the processor including the context of the program counter the current operating mode user or supervisor and the status of the interrupts enabled or disabled These contents are saved so it can be restored when the execution has been serviced When an exception occurs the CPU loads the Exception Program Counter EPC register with a location where execution can restart after the exception has bee...

Page 373: ...y burst The signal level of the looped burst for both the A and B channel returning to the receiver unit is compared with the sent burst and must exceed a lowest level The number of detected bit errors must be less than a maximum permitted level If the test is passed the test is terminated and no fault is indicated If the primary test fails a retest is performed This test issues a preconfigured nu...

Page 374: ...TMA and the antenna The attenuation should be 14dB if the Tx feeder loss is 2dB and 18dB if the Tx feeder loss 2dB If VSWR is too high a message is sent to the fault handling It is possible to set two disturbance parameters from the OMT The two disturbance VSWR levels are in the range of 1 5 2 8 Allowed alarm level VSWR values are 1 5 1 6 1 7 1 8 2 0 2 2 2 5 2 8 The transmitter at the TRU measures...

Page 375: ... and the RBS on the Abis interface This is achieved by letting a number of DMRUs use the same subrate for LAPD signalling on A bis To accomplish this the CMRU shall concentrate LAPD uplink messages from a number of DMRUs onto one physical link to the BSC The LAPD concentration function is modelled on A bis with a managed object AO CON which is supported by the RBS The supervising function checks t...

Page 376: ... humidity sensors a compressor and a condenser The compressor will start at an initial temperature of 32 C and will stop when the temperature falls to 25 C If the enclosure temperature falls below 10 C the heating unit will be switched on and it will be switched off when the temperature rises above 15 C The cabinet heating up time to 0 C depends on the ambient temperature and the time the cabinet ...

Page 377: ...ctionality of the TMA Preconditions and Initiation Initiates automatically at application software start Description The faults associated are installed in the fault handling function at initiation The functionality of the TMA is supervised by measuring the power consumption of the TMA A disturbance is generated if the power consumption is outside a predefined interval Two different disturbance le...

Page 378: ... 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 376 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 379: ... and Maintenance Terminal The visual indicators relevant to Diagnostics and Fault Handling are described within the context of Operation and Maintenance Support 47 2 Concepts AO Application Object An AO is an abstract subclass of MO AO provides a part of the functionality of a GSM BTS The functionality is specified for each concrete descendant class An AO instance has O M communication with BSC on...

Page 380: ...lt on a bus and interruption on a PCM reference SO Service Object A SO is an abstract subclass of MO A SO instance carries service functions for a set of MO instances including itself The service functions include Layer 2 termination and Layer 3 distribution They may also include HW supervision and SW handling 47 3 Fault Detection Purpose This function detects hardware and functionality faults in ...

Page 381: ...re a fault is considered to be present or absent The filtering function is adapted to each fault situation for optimum performance Each fault has its own specified fault filter parameters For example the following parameters or combinations of parameters may be used for the filter function Frequency of disturbances A frequency which is too high is considered to be a fault The measurement value of ...

Page 382: ...ault whether it affects functionality of the MO or not and also if the fault is internal or external Preconditions and initiation The fault filtering function or the fault evaluation has detected or ceased a fault Description Faults detected by an MO are classified according to Severity Either affects may affect functionality of the MO or does not affect functionality of the MO Fault origin Either...

Page 383: ...atically by the RBS Permitted actions are Re initiation Certain faults can sometimes be cleared by re initiating the offending hardware For example if a communication circuit behaves unexpectedly it is reinitiated Note that re initiation of an entire RU or a processor is not allowed as a local action Fault isolation If a detected fault could cause equipment damage the equipment is isolated For exa...

Page 384: ...atus of the RBS are logged in a software log The software log is distributed on the RUs A log entry is stored in the RU where the fault is detected The software log is stored in volatile memory 47 8 RBS Diagnostics Purpose The purpose of this function is to make conclusions about where the original fault source is located Preconditions and initiation The fault detecting function has reported a cha...

Page 385: ... via A bis MO Managed Object The BSC manages the O M of the RBS via the A bis O M Interface The RBS equipment is seen as MOs by the BSC This is a means of describing the RBS in a functional oriented way and 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 one to one relation...

Page 386: ...val of equipment information A Sub RU normally does not have a processor Note that an RU with a processor that is not loadable is classified as a Sub RU In the RBS 2000 hardware architecture for example the CDUs are Sub RUs 48 3 Functions 48 3 1 User Interface The OMT provides an easy to use graphical user interface Well known hardware units and functions for example a transmitter appear as graphi...

Page 387: ...le in the OMT Connect establish a connection between the OMT and the RBS A functionality and compatibility check is performed on RBS and OMT software versions If the OMT is connected remotely an RBS address can be given in order to select one of several RBSes connected in a multidrop chain Also a timeslot which the OMT uses when established is given by the operator The RBS is scanning for remote O...

Page 388: ...e new Modify Increase or decrease the number of activated RUs in the IDB The functions above are for general purpose use 48 3 5 External Alarms The following user functions related to the external alarms are available in the OMT Display external alarm setup display the external alarm setup parameters see chapter External Alarms associated with each of the external alarm inputs Define external alar...

Page 389: ... PCM link to use for TN O M communication TNOM_nodeid Holds the identity of the BTS node in the TN O M network 48 3 8 Display TN O M Values This function displays the value of the TN O M parameters which are stored in the TNOM_information element in the IDB see parameters above 48 3 9 Calibration of Optional Reference Oscillator This function is used to calibrate the optional reference oscillator ...

Page 390: ...sion interface type sets transmission interface type in the database to G 703 2048 kbit s or DS1 1544 kbit s Modify available synchronization source sets whether PCM link A and B or anyone of them is to be available as synchronization source Possible settings are Activated or Not activated Display available synchronization source displays whether PCM link A and B or anyone of them is available as ...

Page 391: ...REC SENS in the IDB Exception A DXU which uses the PRACT transmission circuit does not support the PCM Receiver Sensitivity values Display PCM Receiver Sensitivity Displays the individual PCM Receiver Sensitivity values for an E1 transmission interface The values are defined and referred as parameters PCM A REC SENS and PCM B REC SENS in the IDB Exception A DXU which uses the PRACT transmission ci...

Page 392: ...ace type set display available synchronization source display define spare bits display switch on switch off CRC 4 Maintenance monitor maintenance data 48 3 13 Antenna System The following user functions related to the antenna system are available in the OMT Monitor maintenance data display any of the following data and update changes continuously Diversity The functions above are normally used fo...

Page 393: ...el combination display the channel combination of MO Timeslot The functions above are normally used for maintenance 48 3 16 Replaceable Unit The following user functions related to the RUs in general are available in the OMT Display RU info display any of the following parameters associated with a specific RU RU instance TEI Product number Hardware revision Serial number Position cabinet rack shel...

Page 394: ...remotely connected OMT can be established The remote OMT is placed at a BSC site The Remote OMT and the locally connected OMT are not interchangeable with each other They are two separate products performing the same functions All functions available in a locally connected OMT are also available in a remotely connected OMT The function can fail due to software incompatibility if no RBS confirms th...

Page 395: ...equipment is connected Used for both Auxiliary Faults and External Alarms Alarm Setup The parameter definition for the alarm inlets which is set by OMT Basic Character Set A subset of the CCITT International Alphabet No 5 International Reference Version See table below Table 156 Basic Character set Character Code Space 20hex 0 1 2 3 4 5 6 7 8 9 30hex 39hex 3Ahex 40hex A B C D E F G H I J K L M N O...

Page 396: ...alphanumeric string associated with each external alarm may contain a maximum of 62 characters Fault Activation Criteria The way in which the external alarm is activated either by breaking or closing the circuit on the external alarm inlet The RBS supervises each configured external alarm An external alarm is filtered i e must remain in a state for a fixed period of time approximately 3 seconds be...

Page 397: ...er 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 EN LZT 720 0008 P2A 2001 11 28 395 485 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 398: ...External Alarms This page is intentionally left blank 396 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 399: ...hat are reported over Abis transparently through the RBS An example is fire alarm Alarm Inlet The binary inlet to which the supervised equipment is connected Used for both Auxiliary Faults and External Alarms Alarm Setup The parameter definition for the alarm inlets which is set by OMT 50 3 Function The following ARAE supervision parameters are associated with each auxiliary fault Inlet number 1 1...

Page 400: ...supervision parameters receiver diversity configuration and radio configuration The BSC will then take the affected MO s out of operation if appropriate 50 4 Operational Conditions 50 4 1 Operation and Maintenance Maintenance functions related to auxiliary faults are described within the context of Operation and Maintenance Terminal The visual indicators relevant to auxiliary faults are described ...

Page 401: ...or more cabinets are handled 51 1 Concepts External Outside the RBS cabinet Internal Inside the RBS cabinet Temperature In this chapter shaded air temperature Normal range Is internal temperature within 5 C to 45 C Normal operation Is internal temperature range which is 5 C to 10 C within safe range in both high and low limits Specified external Normal Condition range Is stated in relevant product...

Page 402: ...Climate Control by Forced Air Operational Conditions This function is available when the system voltage is present and the internal temperature is above 0 C Description This function maintains the internal temperature by filtering external air and forcing it through or passing the units By continuously replacing the warmed air with air of a lower temperature and using controlled air speed the inte...

Page 403: ...e is above the specified external normal condition low limit and up to an internal temperature of 5 C Alarm reporting and administration are available within the safe function range 51 2 7 Power Connection At start and restart of the RBS the connection of the RBS power system to the incoming AC mains and the connection of the users to the DC power in the RBS depends on the current internal tempera...

Page 404: ...cted 51 2 8 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 402 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 405: ...o Interference Characteristics of Information Technology Equipment 4 EN 50 081 1 January 1992 Electromagnetic compatibility Generic emission standard Part 1 Residential commercial and light industry 5 EN 50 082 1 January 1992 Electromagnetic compatibility Generic immunity standard Part 1 Residential commercial and light industry 6 IEC 801 3 1984 Radiated electromagnetic field requirement 7 EN 6100...

Page 406: ...rate as intended During the test no degradation of performance or loss of function is allowed below the specified test level Performance Criteria B The system shall continue to operate as intended after the test During the test degradation of performance is however allowed below the specified test level No change of actual operating state or stored data is allowed Performance Criteria C Temporary ...

Page 407: ...K 20 A fire hazard should not arise in the test object Any damage or permanent malfunction occuring should be confined to a small number of external line interface circuits 52 3 Capabilities 52 3 1 RBS Description Hardware The capabilities are tested for an RBS equipped with a minimum representative configuration of units This system is representative of installed systems in terms of function whic...

Page 408: ...ly leads Basic standard EN 61000 3 2 Limit Set by Table 1 in EN 61000 3 2 Table 161 Interference on AC power supply leads Basic standard EN 55 022 Limit Class B Limit standard VDE 0878 Conducted emission part 1 Limit Class B Table 162 Interference on DC power supply leads Basic standard EN 50 022 and proposed amendment to CISPR 22 Limit Class B Limit standard ETS 300 342 2 Nov 1994 Limit Class B T...

Page 409: ...s Table 167 Surge test Limit standard ETS 300 342 2 Test level 2 kV common mode between all lines and cabinet ground reference 1 1 kV differential mode between line and line Performance Criteria A for a complete system Criteria TT for transmitter units Criteria TR for receiver units 1 System primary protected Table 168 RF common mode test Limit standard ETS 300 342 2 Test level 10 V rms Performanc...

Page 410: ...erformance Criteria A for a complete system Criteria TT for transmitter units Criteria TR for receiver units Table 172 RF common mode test Limit standard ETS 300 342 2 Test level 3 V rms Performance Criteria A for a complete system Criteria CT for transmitter units Criteria CR for receiver units 52 3 6 Immunity on Telecommunication and External Signal Lines Table 173 Fast transient test Basic stan...

Page 411: ...ter units Criteria TR for receiver units Table 176 Power induction test Basic standard ITU T K 20 Test level 600 V rms common mode Performance Criteria A K 20 Table 177 RF common mode test Limit standard ETS 300 342 2 Test level 10 V rms Performance Criteria A for a complete system Criteria CT for transmitter units Criteria CR for receiver units 52 3 7 Radiated Immunity of Enclosure Port Table 178...

Page 412: ...able 180 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 Performance Criteria A for a complete system Criteria TT for transmitter units Criteria TR for receiver units 410 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems A...

Page 413: ...to the White Book ITU International Telecommunications Union 53 2 Concepts CMRU Central Main Replaceble Unit An RBS has exactly one CMRU In the RBS 2000 hardware architecture the DXU is 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 B...

Page 414: ... 0 1 1 15 E 1 A Sa4 Sa5 Sa6 Sa7 Sa8 CRC 4 Cyclic Redundancy Check ITU T G 704 c1 c2 c3 c4 CRC 4 bits see the section Layer 1 Termination 2048 kbit s below A Alarm bit see the section Layer 1 Termination 2048 kbit s below E Error bit see the section Layer 1 Termination 2048 kbit s below Sa4 Sa5 Sa6 Sa7 Sa8 Spare bits see the section Layer 1 Termination 2048 kbit s below Downstream The path for info...

Page 415: ... rec G 703 interface at 2048 kbit s 75 or 120 ohm selectable and over voltage protection according to Annex B Frame structure according to ITU T rec G 704 section 2 3 includes handling of the E bit in timeslot 0 Frame alignment and CRC 4 procedures according to ITU T rec G 706 section 4 Synchronization of layer 1 handling is described in subsection Section 53 3 2 on page 414 Detection of fault con...

Page 416: ...g is used to synchronize PCM A outgoing PCM A incoming is used to synchronize PCM B outgoing 2 PCM B can be used as reference source PCM A cannot PCM B is selected as the reference source PCM B incoming is used to synchronize PCM A outgoing PCM B incoming is used to synchronize PCM B outgoing 3 Neither PCM A nor B can be used as reference source The free running oscillator is selected as reference...

Page 417: ...FF Three consecutive frame alignment signals in TS0 received with an error CRC 4 is ON CRC multiframe alignment has not been achieved within a search time of 500 ms or three consecutive frame alignment signals in TS0 received with an error or CRC multiframe alignment is lost during monitoring for incorrect frame alignment 915 errored CRC blocks out of 1000 LOF ceases CRC 4 is OFF Recovery of frame...

Page 418: ...ly of the other An unavailable state for one direction is declared at the onset of P consecutive SES for the direction of interest These P seconds are considered to be part of the unavailable time Together with the alarm status time information for each direction of UAST is reported to the BSC When UAST commences zero is reported as time information When UAST ceases the time that the UAST alarm ha...

Page 419: ...shed by taking the number of faulty frame alignment words and dividing them by the total number of checked bits during the BI Base Interval The bit fault frequency is supervised and reported as the mean bit error ratio in ppm parts per million during the BI Disturbance Frequency supervision This supervision monitors the detected fault situations which are regarded as disturbances upon detection Up...

Page 420: ... one frame bit error CRC 4 is ON At least one CRC 4 error LOF alignment LOS Slip AIS A bit equal to 1 from the remote end E bit indication received from the remote end only valid when CRC 4 is used Two counters for 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 The downstream co...

Page 421: ... events 1 A bit 1 or N1 E bit 0 only valid when CRC 4 is used SES are not counted during unavailable state Both SES counters are reported after each BI UAS and Unavailable State supervision UAS is a count of one second intervals during which service is unavailable This period of time is referred to as the unavailable state The two directions upstream and downstream are supervised separately That i...

Page 422: ...s P and Q Used for defining unavailable state Value range is 5 15 s Default value is 10 s The parameters N1 and N4 Define the threshold numbers for ES and SES Value range and default values are listed below Table 182 Parameters N1 N4 Parameter Value Range Description number of N1 805 1 1000 CRC 4 errors for SES and E bits equal to 0 N2 Not used N3 Not used N4 28 1 100 Frame errors for SES The conf...

Page 423: ...nsmitted on PCM B output AIS is transmitted until the alarm state is left When entering and leaving alarm states the alarm filtering time is used AFT 53 4 Operational Conditions 53 4 1 Operation and Maintenance Maintenance data such as CRC 4 status and the values of the spare bits in timeslot 0 can be set by the OMT The OMT part is described within the context of Operation and Maintenance Terminal...

Page 424: ...Transmission Interface Handling G 703 2048 kbit s This page is intentionally left blank 422 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 425: ...ec 1990 Bellcore TR NWT 000499 Apr 1992 54 2 Concepts CMRU Central Main Replaceble Unit An RBS has exactly one CMRU In the RBS 2000 hardware architecture the DXU is 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...

Page 426: ... C 19 3474 m 1 8 20 3667 1 1 8 21 3860 m 1 8 22 4053 C6 1 8 23 4246 m 1 8 24 4439 1 1 7 8 A B D 1 No channel associated signalling only T column applicable 8 traffic bits in every frame Frame 1 Transmitted first Frames 6 12 18 and 24 Denoted signalling frames FPS Framing Pattern Sequence 001011 DL 4 kbit s Data Link Message bits m CRC CRC 6 Cyclic Redundancy Check Bits C1 C6 Option T Traffic Bit 8...

Page 427: ...electrical characteristics according to ANSI T1 403 interface at 1544 kbit s one pair for each direction of transmission test load impedance 100 ohm resistive Frame structure according to ANSI T1 403 ESF T option only see Table 183 on page 424 8 traffic bits in all frames in the ESF Line coding B8ZS according to AT T section 4 2 2 ref 4 B8ZS is the only technology to provide 64 kb s Clear Channel ...

Page 428: ...ork interface is according to AT T T1 5 Service TR 62411 dec 1990 chapter 6 Synchronization and Timing Synchronization of layer 1 is either derived from one of the incoming PCM paths or taken from a free running oscillator A PCM path with LOF Loss Of Frame alignment LOS Loss Of Signal AIS Alarm Indication Signal or that is not available for synchronization according to a parameter in RBS DB cannot...

Page 429: ...nly be performed when the AO DP Digital Path is in state Disable The reporting to the BSC is 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 when the alarm status is changed or when required from the BSC The fault supervision includes detection and reporting of the following fault conditions LOF Loss of ...

Page 430: ... consisting of eight 1 s followed by eight 0 s that is 4 times 1111111100000000 is detected over the ESF data link The signal is detected in less than one second and in the presence of a 1 10 3 BER RAI ceases The RAI signal pattern does not occur in 8 to 13 contiguous 16 bit signal pattern intervals UAST commences UAST commences when unavailable state is declared Each direction upstream and downst...

Page 431: ...rsts of faults decrease the number of CRC errors detected compared to what would have been detected with an equal distribution of faults in time The probability of bit faults appearing in bursts is greater than the probability of detecting single isolated bit faults This probability increases with the real bit error rate and with the length of the time period over which the real bit fault frequenc...

Page 432: ...er of slips per time interval A slip is defined as where one frame 193 bits is either lost or duplicated The SF counter is incremented by one for each slip on the PCM port upstream or on the PCM port downstream The SF is supervised and reported as the number of slips during the BI Errored Seconds supervision An ES is a second with at least one of the following events CRC 6 error LOF alignment LOS ...

Page 433: ...ilable State supervision UAS is a count of one second intervals during which service is unavailable This period of time is referred to as the unavailable state The two directions upstream and downstream are supervised separately That is one of the directions can be in the unavailable state but the other is in the available state The counting of ES and SES is stopped for both directions as soon as ...

Page 434: ...arameter T defines the time interval for ERATE supervision Value range is 1 5 s Default value is 2 s The configuration parameter AFT The configuration parameter AFT defines the Alarm Filtering Time for all the fault supervision functions except RAI supervision Value range is 50 5000 ms Default value is 125 ms The resolution is 1 ms but the accuracy is 25 ms The configuration parameter AFT RAI The ...

Page 435: ...nction is initiated when the parameter Network Topology is set by the OMT to indicate multidrop cascade AIS Generation When entering one of the alarm states LOF LOS or AIS at PCM A input AIS is transmitted on PCM B output AIS is transmitted until the alarm state is left When entering and leaving alarm states the alarm filtering time is used AFT EN LZT 720 0008 P2A 2001 11 28 433 485 Ericsson Radio...

Page 436: ...Transmission Interface Handling DS1 1544 kbit s This page is intentionally left blank 434 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 437: ...Layer 2 communication link for traffic services on A bis 55 3 Function 55 3 1 Layer 2 Link Handling of OML and RSL The link layer used for signalling on the A bis interface between BSC and BTS is established and maintained according to Technical Specification GSM 08 56 LAPD Link Access Protocol on the D channel is used for layer 2 signalling Signalling conforms to GSM 08 56 55 4 Operational Condit...

Page 438: ...Terrestrial Link Handling This page is intentionally left blank 436 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 439: ...r to the table of contents to find the appropriate chapter 56 2 Concepts Channel A channel is a 16 32 or 64 kbit s connection between two entities connected to the switch see Figure 144 on page 438 A 64 kbit s connection between a timeslot in the transport network interface and a signalling port in a TRX is an example of a channel CF Central Functions Functional entity for handling of RBS common f...

Page 440: ...tly not used as a terrestrial signalling channel or as a terrestrial traffic channel 56 3 Functions The CDF Channel Distribution Function switches channels between the entities connected to the switch See figure below Channel distribution Channel distribution Transport network interface 01_0297B TRU Signalling OML RSL Air timeslot resource traffic CF Figure 144 Channel distribution function CDF Al...

Page 441: ...s One signalling channel can be switched to each TRX the capacity of this channel is 16 32 or 64 kbit s Eight 16 kbit s traffic channels can be switched to each TRX i e one for each available ATSR 24 signalling channels can be switched to the concentrator the capacity of each channel is 64 kbit s The physical mapping which is needed to configure the switch is based on ICPs Each ICP represent a 16 ...

Page 442: ...ling channel Non concentrated signalling channels CON Figure 145 One N 1 concentrator Connection Group CG Messages are sent forward to their destinations without adding deleting or changing information The concentrator is configured by A bis commands as described within the context of Functionality Administration For each concentrated signalling channel there is a transmit queue for uplink message...

Page 443: ...s are searched in a cyclic way and all configured terrestrial signalling channels are searched continuously After a search time of 5 minutes the entire configuration of the channel distribution function except TN O M channel is erased all set up connections are lost and have to be reconfigured The search continues but now all terrestrial channels are defined as unoccupied Timeslot for TN O M is co...

Page 444: ...no longer performed on a shared terrestrial signalling channel This is the normal way to terminate this function 56 3 4 Multidrop For an RBS configured for multidrop the function is initiated during restart of the 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 The multidrop connected RBSs ar...

Page 445: ...nfigured 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 The figure below shows a schematic example with two RBSs and seven timeslots The first RBS uses timeslots 2 5 and 6 and the second uses 1 3 and 4 EN LZT 720 0008 P2A 2001 11 28 443 485 Ericsson R...

Page 446: ...de chain presuming that PCM A is not in loop mode It is considered to be so until the alarm state is left When entering loop mode DXX line loop back at PCM B the RBS transmits idle pattern on all timeslots not dedicated for the RBS itself on PCM A output presuming that PCM A is not in loop mode Idle pattern is transmitted until the loop mode on PCM B is left When entering loop mode DXX line loop b...

Page 447: ... used is 0 and the SAPI value used in the range 20 30 56 4 Operational conditions 56 4 1 Operation and maintenance Not applicable 56 4 2 Capabilities The maximum number of concentration groups is 12 and the concentration ratios 1 1 to 12 1 this is only valid for RBS The maximum scanning capacity is 24 channels per 1 second interval Each TRX handles two links one OML and one RSL link on a common te...

Page 448: ...Channel Distribution Function This page is intentionally left blank 446 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 449: ...M time slot and DXX specific functions including Node identity Node access control Node real time control Current alarm report Alarm history report G 821 Performance reports Fault masks Loop back Node inventory DXX protocol handling With Transport Network O M and DXX support in RBS 2000 it is possible to connect an RBS to DXX without using a DXX transport module In the Figure 149 on page 448 an ex...

Page 450: ...tion 57 4 on page 450 DXX uses specified layer 3 and layer 7 protocols for the transport network O M The layer 2 protocol used is LAPB The protocols used are described in Section 57 4 on page 450 57 2 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 All ITU T references refer to the White Book I...

Page 451: ... among others The O M centre is named NMS DXX node A node in the DXX system DXX support DXX support is O M functions in RBS 2000 intended for DXX DXX support is a portion of the functionality in a DXX transport module DXX transport module A DXX node suitable to fit in the RBS 2000 cabinet NMS The Network management system in DXX Hence NMS is TN O M for DXX TN O M Centrally located management syste...

Page 452: ...BS and DXX is performed on a 64 kbit s timeslot in the PCM link The PCM link is either 2048 or 1544 kbit s This function allocates a 64 kbit s timeslot for the TN O M management channel When RBS is configured as stand alone one timeslot with the same timeslot number is allocated for both PCM A and PCM B When RBS is configured in cascaded chain the same timeslot number is used for PCM A and PCM B A...

Page 453: ...ock Real time of node This clock is used for time stamps in alarm and performance reports The real time clock is used with a relative clock counter Relative time of unit that is used to make time stamps on individual fault events The real time of node counter has the possible values between 0 and 4 294 967 295 The relative time of unit counter has the same value range Both counters are incremented...

Page 454: ...1 Remote Alarm Indication RAI According to TIH_E1 and TIF_T1 Loop Mux Demux back to line This status is activated when the DXX loop is activated Rx data is looped back to the interface transmitter G 821 limit event This fault will be activated as a delta event when at least one G 821 performance limit has been exceeded in a 15 minute period See also Section 57 4 8 on page 453 With delta alarm even...

Page 455: ...nt from RBS to DXX upon request The fault conditions are described in Section 57 4 5 on page 451 The RBS maintains an alarm history in its alarm event log which is a ring buffer for 100 latest alarm events The alarm events are alarm on alarm off and delta combined alarm on and off The delta alarm event type is used when an alarm is turned on and off within a short period i e an alarm has occurred ...

Page 456: ... G 821 Performance limits supervised are Limit for Severely Errored Seconds SES with the values between 0 and 900 Limit for Errored Seconds ES with the values between 0 and 900 Limit for CRC E with the values between 0 and 65000 Limit for Remote Alarm Indication RAI with the value between 0 and 900 G 821 Performance basic statistics counters For limited statistics a number of counters are reported...

Page 457: ...gnal AIS and for T1 system At least N1 CRC errors Loss of frame alignment LOF Loss of signal LOS Alarm indication signal AIS The default values N1 and N4 are stated in and the SES is performed in accordance with TIH_E1 and TIH_T1 ES An error second ES is a second with at least one of the following events For E1 system At least 1 CRC errors when CRC is used At least 1 Faulty FSW when CRC is not use...

Page 458: ...nabled CRC Number of Cyclic Redundancy Check CRC block errors detected FSW Numbers of faulty frame synchronization words One count every time one or more faulty bits in frame alignment word has been detected FS Numbers of lost frame alignment One count every time the frame synchronization is lost BUFIN Number of detected buffer slips on the receiver interface Rx 57 4 9 DXX Fault masks This functio...

Page 459: ...RAI fault mask When ON a received RAI does not generate an alarm This parameter is OFF as default The AIS inhibit or RAI inhibit does not generate the fault mask alarm 57 4 10 DXX Loop back 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 This function controls line loop...

Page 460: ...ype and version is the type and version for the specific DXX support software not for the RBS software The HW type inventory include RBS E1 and RBS T1 Transmission interface parameter settings It is also possible from DXX to get the parameter settings for the transmission interface in the RBS The parameter settings that can be fetched are Status of TS0 Sa bits 1 or 0 CRC4 ON or OFF TN O M timeslot...

Page 461: ...ect 40 SUBRACK_STATE Object 41 NODE_STATE The parameters used for the Alarm history report are handled by Object 7 ALARM_HISTORY The parameters used for the G 821 performance report are handled by Object 23 G 821_OBJECT The parameters used for the Fault mask function are handled by Object 27 FLM_OBJECT Object 228 IFM_OBJECT The parameters used for the Loop back function are handled by Object 227 L...

Page 462: ... in data within the application layer are handled according to the following An RO Reject is sent from RBS to DXX an agent to a manager if the command is not reasonable enough to give either an RO Result or an RO Error The fault status can be one or more of the following Parameter error Context error Functional error or Unknown object An RO Reject is sent from RBS to DXX an agent to a manager if t...

Page 463: ... I Model 3 1551 APT 210 09 Uen Translation of Abis O M IWD Parameters BSC Command Parameters 58 3 Parameters The parameters listed in this document are extracted from the Data Elements listed in the Abis O M IWD document see reference 1 This document states the BTS parameters with parameter range limitations compared with the Abis O M IWD For each parameter in the list the range supported by the B...

Page 464: ...number of CG within Input Concentration Map 1 12 IWD defined value range y 0 16 mi 2 17 CCP CCP number 0 4 1020 Reserved 1 3 5 7 1021 1023 Tag CP gives deconcentrated inlet outlet 0 CP gives concentrated inlet outlet and Tag sequential number of CG within Input Concentration Map 1 16 58 3 5 Extended Range Indicator BTS supported parameter range ERI 0 extended range off IWD defined value range 0 1 ...

Page 465: ...binations of current state and other state 58 3 9 FN Offset FN Frame Number Offset must be equal for all TSs within a TRX Configuration of FN Offset on one TS will also reconfigure all previously configured TSs on that TRX provided that no TS within the TRX is enabled BTS supported value range FN offset 0 1023 03FF hex IWD defined value range 0 1325 052D hex 58 3 10 Frequency List BTS supported va...

Page 466: ... Valid 900 MHz option is dependent on hardware configuration IWD defined value range ARFCN 900 MHz 0 124 975 1023 955 974 dec ARFCN 1800 MHz 512 885 dec ARFCN 1900 MHz 512 810 dec 58 3 12 Frequency Specifier TX BTS supported value range ARFCN 900 MHz 1 124 dec option 1 0 124 975 1023 dec option 2 0 54 955 1023 dec option 3 ARFCN 1800 MHz 512 885 dec ARFCN 1900 MHz 512 810 dec Note Valid 900 MHz op...

Page 467: ...lass BTS supported value hex IWD defined value hex Instance number Instance number TRXC 01 00 0B 01 00 0F TX 0B 00 0B 0B 00 0F RX 0C 00 0B 0C 00 0F 58 3 16 MO State Table 187 BTS supported codes Code MO State Parameter Used by MO 00 Reset CF IS TRXC RX TF TS TX DP CON 01 Started CF TRXC 02 Enabled IS RX TF TS TX DP CON 03 Disabled IS RX TF TS TX DP CON IWD defined value range 00 03 58 3 17 Power N...

Page 468: ...aster slave configuration to max power for example 47 dec for Macro 900 MHz An RBS with Filter Combiner does not support SW Power Boost 58 3 18 Result Code BTS supported codes Wrong state or out of sequence 02 File error 03 Fault unspecified 04 Protocol error 06 MO not connected 07 IWD defined value range 01 0A 58 3 19 TCH Capabilities BTS supported value Cross Combination Indicator 127 IWD define...

Page 469: ... 263 o 256 257 258 259 o o o 348 349 350 351 260 261 262 263 256 257 258 259 o ICP SCH1 SCH2 SCH24 CCP IS o o o o o o o o o o o CON TS 64 kbit PSM timeslot ATSR Air time slot resource SCH Signalling channel TCH Traffic channel Figure 151 Physical mapping of entities and ICP CCP Note TS25 TS31 are only applicable for 2048 kbit s systems Each ICP IS Connection Point or CCP CON Connection Point repre...

Page 470: ...BTS Parameter Limitations This page is intentionally left blank 468 485 EN LZT 720 0008 P2A 2001 11 28 Ericsson Radio Systems AB All Rights Reserved P r e l i m i n a r y ...

Page 471: ...nd BTS AC Alternating Current ACB Alarm Collection Board ACCU Alternating Current Connection Unit A D converter Analog to Digital converter AGW Abis Gateway Air conditioner One version of the climate unit Active cooler AIS Alarm Indication Signal ALBO Automatic Line Build Out ALNA Antenna Low Noise Amplifier ALPU Antenna Lightning Protection Unit AO Application Object ARAE Antenna Related Auxiliar...

Page 472: ...an IDM with a battery and a local processor BER Bit Error Rate BFU Battery Fuse Unit Bias injector Injects DC power in the coaxial cable to feed the TMA Isolates the DC power from the RF signal fed to the CDU 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 BS ...

Page 473: ...Cell Broadcast CHannel This is a downlink only channel used by the GSM defined SMSCB function CCCH Common Control CHannel Channel combining the following common control channels PCH Paging CHannel RACH Random Access CHannel AGCH Access Grant CHannel CCU Climate Control Unit CDU Combining and Distribution Unit CE Conformite Europe enne Cell An area of radio coverage identified by the GSM network by...

Page 474: ...quired physical links between the BSC and BTS Config Configuration Co siting Co siting is the operation of a radio base station in GSM together with the radio base station in Total Access Communication System TACS or Nordic Mobile Telephone system NMT on the same site by sharing common equipment CPI Communication and Power Interface CPI Customer Product Information CPU Central Processing Unit CRC ...

Page 475: ...used for supervision of the connected PCM lines Dixie ASIC in the TRU DM Degraded Minute DM Distribution Module DMRU Distributed Main Replaceable Unit If a Main RU is subordinated to the CMRU it is said to be distributed Downlink Signalling direction from the system to the MS DP Digital Path DP Distribution Panel DPX Duplexer DS1 Digital Signal level 1 1544 kbit s DSP Digital Signal Processor DT D...

Page 476: ...rm Connection Unit EC1 External Condition Map Class 1 EC2 External Condition Map Class 2 ECU Energy Control Unit EDGE Enhanced Data rate for Global Evolution EDT Electrical Down Tilt EEPROM Electrically Erasable Programmable Read Only Memory EIRP Effective Isotropic Radiated Power EMC Electro Magnetic Compatibility EMF ElectroMotive Force EMI Electromagnetic Interference ENV Environmental EOC Embe...

Page 477: ...ield Support Centre FU Filter Unit RU in CDU D FUd Filter Unit with duplexer RU in CDU D FXU Future Expansion Unit G01 MO model for RBS 200 G12 MO model for RBS 2000 G 703 CCITT Standard for transmission GPRS General Packet Radio Services GS General Specification GSL GPRS Signalling Link GSM Global System for Mobile communications International standard for a TDMA digital mobile communication syst...

Page 478: ...igh Level OUT 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 I1A Internal Fault Map Class 1A I1B Internal Fault Map Class 1B I2A Internal Fault Map Class 2A IA Immediate Assignment IC Integrated Circuit ID IDentificatio...

Page 479: ...ng 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 Local mode it is not communicating with the BSC Local Remote switch A switch used by the operator to order the RU to enter Local or Remote mode LOF Loss Of Frame Logical Channel A logical channel represents ...

Page 480: ...RU A main replaceable unit is a replaceable unit that contains one or more processors to which software can be downloaded from the BSC MCB MultiCasting Box MHS Modification Handling System Ericsson trouble report database MMI Man Machine Interface MO Managed Object MR Measurement Receiver MRT Mean Repair Time MS Mobile Station MSC Mobile services Switching Centre GSM network unit for switching rou...

Page 481: ... for activities such as configuration utilization of channels frequency bands cell planning system supervision hardware and software maintenance subscriber administration and so forth OMC Operation and Maintenance Centre OML Operation and Maintenance Link Layer 2 communication link for operation and maintenance services on Abis OMT Operation and Maintenance Terminal The OMT is a terminal that supp...

Page 482: ... PFWD Power Forward Physical Channel An air interface physical channel carries one or more logical channels A physical channel uses a combination of frequency and time division multiplexing and is defined as a sequence of radio frequency channels and time slots TDMA frame Logical channel PIN Personal Identification Number PLB Payload Loop Back PLMN Public Land Mobile Network A network established ...

Page 483: ...tio RBS Radio Base Station All equipment forming one or more Ericsson base station BTS RCB Radio Connection Box RD Receive Data Remote mode When the RU is in RU Remote mode a link is established between the BSC and the central main RU RF Radio Frequency RFCH Radio Frequency CHannel A radio frequency carrier with its associated bandwidth RFTL Radio Frequency Test Loop RLC Radio Link Control RLC Rep...

Page 484: ...anch B RXD Receiver Divider RXDA Receiver Divider Amplifier RXDP Receiver Distribution Plane 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 4 SACCH Slow Associated Control CHannel SCH Synchronization CHannel SDCCH Stand alone Dedicated Control CHannel Main dedicated signalling channel on the air interface mainly used for ...

Page 485: ...YNC 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 TCB Transceiver Control Board TCH Traffic CHannel The traffic channels carry either encoded speech or user data TCH SIG Traffic CHannel Signalling TD Tran...

Page 486: ...port network TMA Tower Mounted Amplifier There are three types of TMAs dTMA rTMA and ddTMA dTMA rTMA ddTMA TMA CM Tower Mounted Amplifier Control Module TN Time slot Number TN O M Transport Network operation and Maintenance in general Tora ASIC in the TRU TRA Transcoder Rate Adapter The TRA Unit in BSC performs transcoding of speech information and rate adaption of data information Tracy ASIC in t...

Page 487: ...vailable Seconds UL Underwriter Laboratories 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 Y link The interface between the DXU and each DSP System in ...

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