GSM BSS G10 BSC Operation and Configuration

[Incognito]

GSM BSS G10 BSC Operation and Configuration
STUDENT BOOK
LZT 123 9435 R2A

This Student Book, LZT 123 9435, R2A supports course number LZU 108 7500
Exercises
Solution to Exercises
Test
Solution to Test

1 SYSTEM DESCRIPTION.............................................................11
GENERAL INFORMATION ..................................................................13
E*******'S GSM SYSTEM ARCHITECTURE ............................................13
NETWORK NODES .............................................................................14
MOBILE SERVICES SWITCHING CENTER/VISITOR LOCATION 
REGISTER (MSC/VLR) ..................................................................................14
MOBILE SERVICES SWITCHING CENTER SERVER (MSC-S) ...................14
MOBILE MEDIA GATEWAY (M-MGW) ..........................................................14
GATEWAY MOBILE SERVICES SWITCHING CENTER (GMSC) ................. 14
HOME LOCATION REGISTER (HLR) ............................................................14
INTERWORKING LOCATION REGISTER (ILR) ............................................15
AUTHENTICATION CENTER (AUC) AND EQUIPMENT IDENTITY 
REGISTER (EIR) ............................................................................................15
DATA TRANSMISSION INTERFACE (DTI)....................................................15
TRANSCODER CONTROLLER (TRC)...........................................................15
BASE STATION CONTROLLER (BSC).......................................................... 15
BASE TRANSCEIVER STATION (BTS) .........................................................16
OPERATIONS AND SUPPORT SYSTEM (OSS) ...........................................16
SERVICE CONTROL POINT (SCP) ...............................................................17
SERVICE DATA POINT (SDP) .......................................................................17
PPS (PREPAID SYSTEM) ..............................................................................18
MOBILE POSITIONING SYSTEM (MPS) .......................................................18
E******* MULTI ACTIVATION (EMA) ........................................................19
E******* MULTI MEDIATION (EMM) .........................................................19
MULTIMEDIA MESSAGING SERVICE (MMS)...............................................20
NETWORK GPRS/EGPRS NODES.....................................................21
SERVING GPRS SUPPORT NODE (SGSN) .................................................21
GATEWAY GPRS SUPPORT NODE (GGSN) ...............................................21
GSM IDENTITIES.................................................................................22
INTERNATIONAL MOBILE SUBSCRIBER IDENTITY (IMSI) ........................22
TEMPORARY MOBILE SUBSCRIBER IDENTITY (TMSI) ............................. 22
LOCATION AREA IDENTITY (LAI) .................................................................22
CELL GLOBAR IDENTITY (CGI) ....................................................................23
MOBILE STATION ISDN NUMBER (MSISDN) ..............................................23
MOBILE STATION ROAMING NUMBER (MSRN) .........................................24
INTERNATIONAL MOBILE EQUIPMENT IDENTITY (IMEI) ..........................25
2 CHANNEL CONCEPT .................................................................27
GSM AIR INTERFACE.........................................................................29
CHANNEL CONCEPT ....................................................................................29
FREQUENCY ALLOCATION..........................................................................29
BURSTS AND FRAMES .................................................................................30
LOGICAL CHANNELS AND BURSTS ................................................32
CONTROL CHANNELS ..................................................................................32
TRAFFIC CHANNELS (TCH)..........................................................................35
ADAPTIVE MULTI RATE (AMR).....................................................................37
BCH, CCCH AND DCCH EXAMPLES............................................................37
CHANNEL COMBINATION SDCCH/8............................................................38
CHANNEL COMBINATION SDCCH/4............................................................39
GPRS AIR INTERFACE.......................................................................41
MULTI-FRAME STRUCTURE ........................................................................41
LOGICAL CHANNELS ....................................................................................42
GPRS CODING SCHEMES............................................................................44
ENHANCED GPRS (EGPRS) .........................................................................45
CALL SETUP MOBILE TERMINATED CALL .....................................48
MEASUREMENT PROCEDURE..........................................................50
MEASUREMENTS IN IDLE MODE ................................................................50
MEASUREMENTS IN ACTIVE MODE ...........................................................55
SLIDING MULTI-FRAMES..............................................................................56
MEASUREMENT REPORT .................................................................58
INFORMATION ELEMENTS...........................................................................58
SYSTEM INFORMATION.....................................................................61
SYSTEM INFORMATION TYPE 1..................................................................62
SYSTEM INFORMATION TYPE 2..................................................................63
SYSTEM INFORMATION TYPE 3..................................................................65
SYSTEM INFORMATION TYPE 4..................................................................67
RACH PARAMETERS .........................................................................70
SYSTEM INFORMATION TYPE 5..................................................................70
SYSTEM INFORMATION TYPE 6..................................................................71
SYSTEM INFORMATION TYPE 7/TYPE 8 (OPTIONAL) ...............................72
DISTRIBUTION OF SYSTEM INFORMATION MESSAGES..........................72
GSM – WCDMA CELL RESELECTION AND HANDOVER.................73
HANDOVER TO GSM.....................................................................................73
HANDOVER TO WCDMA...............................................................................74
3 AXE PLATFORM.........................................................................79
THE AXE SYSTEM ..............................................................................81
INTRODUCTION.............................................................................................81
MIGRATION....................................................................................................82
CAPACITY ......................................................................................................82
COST OF OWNERSHIP .................................................................................82
RELIABILITY...................................................................................................82
REVENUE GENERATING SERVICES...........................................................82
MAIN PARTS OF AXE ....................................................................................83
HARDWARE ...................................................................................................84
TRC.................................................................................................................85
BSC/TRC ........................................................................................................87
BSC.................................................................................................................90
AXE810 BSC / TRC HARDWARE ..................................................................90
APZ 212 55 AND APG 43 ...............................................................................93
GS890 – GROUP SWITCH.............................................................................95
TRANSCODER RATE ADAPTATION UNIT (TRAU) .................................... 100
TRA R6 AND R7 HARDWARE .....................................................................101
MULTIPLEXING AND DEMULTIPLEXING OF CHANNELS ........................102
TRA HARDWARE .........................................................................................103
THE SUBRATE SWITCH (SRS) ...................................................................106
ETC155-1......................................................................................................107
OPERATION .................................................................................................108
BSS ARCHITECTURE FOR GPRS ..............................................................110
BSC AND PACKET CONTROL UNIT...........................................................111
NEW APG43/2 ...................................................................................113
SUMMARY....................................................................................................113
INTRODUCTION...........................................................................................115
HW UPGRADE .............................................................................................116
APG43/2 PERFORMANCE...........................................................................117
4 ABIS OVER IP INTRODUCTION...............................................119
ABIS OVER IP FEATURE..................................................................121
BSC NETWORK INTERFACE – ETHERNET (NWI-E) ......................123
SITE INTEGRATION UNIT.................................................................125
IP OVER E1/T1 USING ML-PPP........................................................129
SUPER CHANNEL.............................................................................133
ABIS LOCAL CONNECTIVITY (ALC) ...............................................134
5 RBS INTERNAL CONNECTIONS.............................................139
INTERFACES OVERVIEW.................................................................141
A-INTERFACE ..............................................................................................142
A-TER INTERFACE ......................................................................................143
A-BIS INTERFACE .......................................................................................144
LAPD PROTOCOL........................................................................................145
THE UPDATED RBS 2106 V3 ...........................................................147
THE UPDATED RBS 2206 V2 ...........................................................149
RBS 2X16 ..........................................................................................149
RBS 2308...........................................................................................151
RBS 2111 ...........................................................................................152
RBS 2111 SECOND GENERATION ..................................................154
RBS 2409...........................................................................................155
MANAGED OBJECTS (MO) ..............................................................156
MANAGED OBJECT STATES......................................................................159
DEFINE MANAGED OBJECTS ....................................................................161
DIGITAL CONNECTION POINTS (DCPS) ...................................................163
6 RADIO NETWORK....................................................................167
INTRODUCTION................................................................................169
THE CELL .....................................................................................................169
THE CLUSTER .............................................................................................170
CELL DATA........................................................................................172
CELL DEFINITION........................................................................................172
DESCRIPTION DATA ...................................................................................173
DEFINITION OF SUBCELLS ........................................................................176
CHANNEL GROUPS ....................................................................................176
DISCONTINUOUS TRANSMISSION DOWN-LINK ......................................177
CONFIGURATION POWER DATA FOR CELL OR SUBCELL..................... 178
FREQUENCY HOPPING DATA ...................................................................179
CONFIGURATION FREQUENCY DATA......................................................180
CONFIGURATION CONTROL CHANNEL DATA.........................................181
MEASUREMENT FREQUENCIES ...............................................................182
NEIGHBOR RELATIONS..............................................................................183
SYSTEM INFORMATION SACCH AND BCCH DATA ................................. 184
SYSTEM INFORMATION BCCH DATA .......................................................186
CELL LOCATING DATA ...............................................................................188
BSC LOCATING DATA.................................................................................189
E*******1 .................................................................................................191
E*******3 .................................................................................................194
CONNECTION OF CELL TO TRANSCEIVER GROUP ...............................196
CELL STATE.................................................................................................197
7 PERFORMANCE MEASUREMENT AND SUPERVISION........199
MOBILE TRAFFIC RECORDING (MTR) ...........................................201
CELL TRAFFIC RECORDING (CTR) ................................................205
CHANNEL EVENT RECORDING (CER) ...........................................208
ACTIVE BA-LIST RECORDING ........................................................212
FREQUENCY ALLOCATION SUPPORT (FAS) ................................214
RECORDING CONFIGURATION .................................................................215
RECORDING ................................................................................................215
STATISTICS, BASED ON MRR .........................................................218
REAL TIME EVENT DATA.................................................................220
INTRODUCTION...........................................................................................220
REPORT DETAILS .......................................................................................222
8 BSS OPERATIONS...................................................................225
SYSTEM SUPERVISION ...................................................................227
DAILY SUPERVISION ..................................................................................227
WEEKLY SUPERVISION..............................................................................229
MONTHLY SUPERVISION.................................................................232
QUARTERLY SUPERVISION.......................................................................233
PERIODIC SUPERVISION ...........................................................................233
BLOCKING SUPERVISION...............................................................234
SEIZURE SUPERVISION OF DEVICES ......................................................236
SEIZURE SUPERVISION OF LOGICAL CHANNELS.......................238
SUPERVISION OF LOGICAL CHANNEL AVAILABILITY ............................240
CALL PATH TRACING IN THE BSC .................................................243
9 BSC/TRC MAINTENANCE........................................................247
BSC/TRC MAINTENANCE ................................................................249
GENERAL INFORMATION...........................................................................249
FAULTS REPORTED FROM THE REMOTE TRANSCODER (TRA)........... 249
PROGRAM LOADING OF TRA-EMS ...........................................................250
SRS MAINTENANCE.........................................................................255
FAULT DETECTION .....................................................................................255
FAULT LOCALIZATION................................................................................255
INTERMITTENT FAULT DETECTION..........................................................256
RESTORATION ............................................................................................256
ALARM HANDLING ......................................................................................256
SRS CONGESTION SUPERVISION..................................................257
ALARM HANDLING ......................................................................................257
MANUAL BLOCKING OF AN SRS UNIT......................................................257
MANUAL DEBLOCKING OF AN SRS UNIT.................................................258
AUTOMATIC BLOCKING/DEBLOCKING OF AN SRS UNIT .......................258
EM BLOCKING/DEBLOCKING.....................................................................258
EM RESTART ...............................................................................................258
TESTING AN SRS UNIT...............................................................................258
COMMAND ORDERED LOOP TEST ................................................259
BTS MAINTENANCE.........................................................................260
GENERAL INFORMATION...........................................................................260
ALARM HANDLING AND DESCRIPTIONS..................................................260
FAULT DESCRIPTION .................................................................................263
DISTURBANCE DESCRIPTION...................................................................263
FAULT AND REPLACEMENT UNIT MAPS..................................................263
ERROR LOG.................................................................................................264
BTS STATE...................................................................................................264
BTS ALARM COORDINATION..........................................................265
FAULT REPORTING ....................................................................................265
FAULT ANALYSIS ........................................................................................265
ALARM CLASSIFICATION ...........................................................................265
ALARM COORDINATION.............................................................................265
SPECIAL ADJUSTMENTS ...........................................................................266
INCREASED IN SERVICE PERFORMANCE............................................... 266
FAULT CLASSIFICATION ............................................................................266
ALGORITHM.................................................................................................267
CONDITIONS AND ALARM SITUATIONS ...................................................268
ALARM PRIORITY RESOLUTION ...............................................................269
BTS LINK FAULTS .......................................................................................270
SYSTEM INTERNAL FAULTS......................................................................271
BRINGING MOs INTO OPERATION .................................................272
CHECK FOR TOO MANY FAULTS ..............................................................272
VERIFYING BTS DATA ................................................................................273
UPDATING BTS DATA .................................................................................273
CONFIGURATION OF THE BTS..................................................................273
TESTING THE AFFECTED MO....................................................................273
FUNCTION CHANGE AND PROGRAM LOAD OF MO ....................274
FUNCTION CHANGE ...................................................................................274
PROGRAM LOAD.........................................................................................275
10 NEW AND ENHANCED FEATURES ........................................277
AUTOMATIC FLP ..............................................................................279
AUTOMATIC IRC TUNING ................................................................281
REDUCED POWER LEVEL AFTER HANDOVER.............................283
IMSI HANDOVER GSM TO GSM ......................................................286
A OVER IP ENHANCEMENTS ..........................................................288
SUPPORT FOR 4095 TRX ON ALL HW CONFIGURATIONS ..........290
OMT, REMOTE OMT AND REMOTE OMT OVER IP ........................291
TERMINOLOGY.................................................................................293
INDEX ................................................................................................301
TABLE OF FIGURES.........................................................................305

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