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  • Network Statistics, Analyzer

    1/1553-APR 102 64/1A Uen G1

    Network Statistics, Analyzer

    Copyright

    Ericsson AB 2002, 2004 - All Rights Reserved

    Disclaimer

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

    Ericsson shall have no liability for any errors or damages of any kind resulting from the use of this document.

    Trademark List

    Acrobat is a trademark of Adobe Systems Inc. BusinessObjects is a trademarks of Business Objects SA All other trademarks and registered trademarks mentioned are the property of their respective owners.

    Contents

    1 Introduction 1.1 Prerequisites 1.2 Typographic Conventions 1.3 Getting Help 2

    Overview Reports

    2.1 Performance Overview, MSC 2.2 Performance Overview, BSC and Cell Set 2.3 Radio Overview, MSC 2.4 Radio Overview, BSC and Cell Set 3

    Planning Reports

    3.1 Call Rejection Exceptions 3.2 Call Setup Performance Overview, BSC and Cell Set 3.3 Calls and Answers 3.4 Congestion 3.5 CP Load

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  • Network Statistics, Analyzer

    3.6 Hardware Dimensioning, BSC and Cell Set 3.7 Location Update, MSC 3.8 Paging Statistics, MSC 3.9 Paging Statistics and Location Updating 3.10 OL/UL Subcells, BSC and Cell Sets 3.11 Random Access, BSC 3.12 Subscriber Activity Profile 3.13 System Performance Charts 3.14 Through Connect Calls 3.15 Traffic 3.16 Traffic Dispersion 3.17 Traffic Measurement on Routes, MSC and Route Sets 3.18 Traffic Profile, Routes 3.19 Traffic Trend Normal, BSC and Cell Set 3.20 Traffic Trend PEAK, BSC 3.21 Unsuccessful Calls 4

    Dropped Calls Reports

    4.1 Dropped Calls Overview 4.2 Dropped Calls Cell, BSC and Cell Set 4.3 Dropped Calls Trend BSC, Cell Set and Cell 5

    Handover Reports

    5.1 Handover Activity, BSC and Cell Set 5.2 Handover Performance Overview, Cell Set 5.3 Handover Performance Per Cell, BSC and Cell Set 5.4 Handover Performance Per Cell Relation, BSC and Cell Set 5.5 Handover Performance OL/UL, BSC and Cell Set 5.6 Inter BSC Handover Performance 5.7 Intra-Cell Handover Overview 5.8 Intra-Cell Handover, BSC and Cell Set 6

    Management Report

    6.1 Infrastructure 6.2 Radio Network Performance 6.3 Route Performance 6.4 Subscriber Info 6.5 Switch Performance

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  • Network Statistics, Analyzer

    6.6 Peak Hour Traffic and Subscribers 6.7 Peak Hour Performance 7

    Speech Quality Supervision

    7.1 Speech Quality Cell, BSC 7.2 Speech Quality Chart, BSC and Cell 8

    Dual Band Reports

    8.1 Dual Band Mobile Performance Cell, BSC and Cell Set 8.2 Dual Band Mobile Performance Trend Cell, BSC and Cell

    Set 9

    GPRS BSC Reports

    9.1 GPRS Performance, BSC 9.2 GPRS Performance, Cell 9.3 GPRS Traffic Load, Cell 9.4 CCCH Capacity 9.5 GPRS Radio Link Quality BSC 9.6 GPRS Quality of Service, BSC 9.7 GPRS Quality of Service Cell, BSC 10

    GPRS GSN Reports

    10.1 GPRS Mobility Management Overview 10.2 GPRS Mobility Management Overview, GSM 12.04 10.3 GPRS Session Management Overview 10.4 GPRS Session Management Overview, GSM 12.04 10.5 GPRS Session Management per GGSN, GSM 12.04 10.6 Packet Switched Paging Performance Overview, GSM

    12.04 11

    Glossary

    12

    Reference List

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  • Network Statistics, Analyzer

    1 Introduction

    This document is intended for users of the Operations Support System (OSS) NWS Analyzer Application (NWS-A).

    It describes the formulas used for calculating the statistics in the reports provided with NWS-A, including:

    which counters that are used, and to which STS or OMS object types they belong

    from which tables and columns in the SDM databases the values are retrieved

    The reports are divided into the following groups:

    Overview reports

    Planning reports

    Dropped Calls reports

    Handover reports

    Management reports

    Speech Quality Supervision reports

    Dual Band reports

    GPRS reports

    Reports that are almost identical are described in the same section, for example when a report is available for both BSCs and cell sets.

    If a report has several sheets, each sheet is described in a table of its own. If a report contains sheets with graphs, these sheets are normally not described, since the measurements in the graphs are usually available in a table elsewhere in the report.

    1.1 Prerequisites

    It is assumed that the user of this document:

    has common knowledge of GSM systems

    is familiar with telecom network statistics

    is familiar with the NWS-A application

    1.2 Typographic Conventions

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  • Network Statistics, Analyzer

    OSS documents follow a set of typographic rules that make the documentation consistent and easy to read.

    System Element Names

    System element names, such as names of typed commands, programs, files, paths and URLs are shown as below.

    Programs and files: system_config.xml

    Variable parts of system element names are shown as below.

    program_name

    Object Types and Database Table Names

    Names of STS and OMS object types, counters, database tables and columns are shown as below:

    STS and OMS object types CELTCHFCounter names THTRALACCBSDDB database tables (BSC_CELL_MAIN)Database columns C_TTRALACC

    The following table contains an annotated example of the column descriptions:

    Table 1 Example of Object Names and Database Table Names

    Column Formula Comment

    ... ...

    TCH Traffic (Erlang) CELTCHF, CELTCHH:

    (TFTRALACC / TFNSCAN) + (THTRALACC / THNSCAN)

    Counters from the object types CELTCHF and CELTCHH are used.

    (BSC_CELL_MAIN / CELL_MAIN):

    C_TTRALACC

    Either the table BSC_CELL_MAIN or CELL_MAIN in the BSDDB database is used, depending on whether the value in the report is for a BSC or for a cell.

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  • Network Statistics, Analyzer

    No. of TCHs CLTCH

    (BSC_CELL_MAIN / CELL_MAIN):

    TNUCHCNT

    The same formula is used both for STS and OMS object types and for BSDDB tables.

    1.3 Getting Help

    To get information on how to use the reports provided with NWS-A, see Network Statistics Analyzer, User Guide.

    To get detailed information on how to create own reports, and how to add more data to reports in NWS-A, refer to the documentation for BusinessObjects and Designer.

    Documentation for BusinessObjects is available from the Help menu in BusinessObjects. There is both online help and a user's guide in Adobe Acrobat (or PDF) format. This help contains general information on the report generator, and detailed information on how to modify and create new reports. However, it does not contain any information specific for the NWS-A reports.

    Documentation for Designer is available from the Help menu in Designer. Similar to the help for BusinessObjects, this help contains detailed information on how to build and modify universes, but does not contain any information specific for the NWS-A universes.

    To get detailed information on the contents of the universes provided with NWS-A, see Network Statistics Analyzer, Universe Description.

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  • Network Statistics, Analyzer

    2 Overview Reports

    2.1 Performance Overview, MSC

    File Name: Shows statistics for: Performance_Overview_MSC.rep Each MSC in the networkUses Universe: BSDR81.unv Table 2 Performance Overview MSC

    Column Formula

    MSC -

    Channel Assignment Success, Originating and Terminating (%)

    CHASSIGNT

    (MSC_DATA):

    100 * (NCHATOMSUCC + NCHAFRMSUCC) / (NCHAFRMTOT + NCHATOMTOT)

    Location Update Success, Registered and Non-Registered (%)

    UPDLOCAT

    (MSC_DATA):

    100 * (NLOCOLDSUCC + NLOCNRGSUCC) / (NLOCOLDTOT + NLOCNRGTOT)

    Paging Success (%) LOCAREAST

    (MSC_DATA):

    100 * (NPAG1RESUCC + NPAG2RESUCC) / (NPAG1GLTOT + NPAG1LOTOT)

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  • Network Statistics, Analyzer

    Inter MSC Incoming Handover Success (%)

    NBRMSCLST

    (MSC_DATA):

    100 * (NNBRHINASUCC + NNBRHSANSUCC) / (NNBRHINATOT + NNBRHSANTOT)

    Inter MSC Outgoing Handover Success (%)

    NBRMSCLST

    (MSC_DATA):

    100 * (NNBRHBANSUCC + NNBRHSNASUCC) / (NNBRHSNATOT + NNBRHBANTOT)

    Inter BSC Incoming Handover Success (%)

    BSCSTAT

    (MSC_BSC_DATA):

    100 * NBSTIHBSUCC / NBSTSHRTOTInter BSC Outgoing Handover Success (%)

    BSCSTAT

    (MSC_BSC_DATA):

    100 * NBSTOHBSUCC / NBSTRHRTOT

    2.2 Performance Overview, BSC and Cell Set

    File Name: Shows statistics for: Performance_Overview_BSC.rep Each BSC in the network Performance_Overview_CellSet.rep Selected cell setsUses Universe: BSDR81.unv Table 3 Performance Overview BSC and Cell Set, Sheet 1: BSC / Cell Set

    Column Formula

    BSC or Cell Set -

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  • Network Statistics, Analyzer

    Random Access Success (%)