31160978-BSC Traffic Statistic Manual

7/29/2019 31160978-BSC Traffic Statistic Manual

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HUAWEI

M900/M1800 Base Station Controller

Traffic Statistic Manual

V300R002


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M900/M1800 Base Station Controller

Traffic Statistic Manual

Manual Version T2-031678-20040712-C-6.02

Product Version V300R002

BOM 31160978

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support

and service. Please feel free to contact our local office, customer care center or company

headquarters.

Huawei Technologies Co., Ltd.

Address: Administration Building, Huawei Technologies Co., Ltd.,

Bantian, Longgang District, Shenzhen, P. R. China

Postal Code: 518129

Website: http://www.huawei.com

Email: [email protected]


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Copyright 2004 Huawei Technologies Co., Ltd.

All Rights Reserved

No part of this manual may be reproduced or transmitted in any form or by any

means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks

, HUAWEI, C&C08, EAST8000, HONET, , ViewPoint, INtess, ETS, DMC,

TELLIN, InfoLink, Netkey, Quidway, SYNLOCK, Radium, M900/M1800,

TELESIGHT, Quidview, Musa, Airbridge, Tellwin, Inmedia, VRP, DOPRA, iTELLIN,

HUAWEI OptiX, C&C08iNET, NETENGINE, OptiX, SoftX, iSite, U-SYS, iMUSE,

OpenEye, Lansway, SmartAX are trademarks of Huawei Technologies Co., Ltd.

All other trademarks mentioned in this manual are the property of their respective

holders.

Notice

The information in this manual is subject to change without notice. Every effort has

been made in the preparation of this manual to ensure accuracy of the contents, but

all statements, information, and recommendations in this manual do not constitute

the warranty of any kind, express or implied.


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About This Manual

Version

The product version that corresponds to the manual is M900/M1800 BSC V300R002.

Organization of the Manual

The manual consists of 4 chapters which detail the traffic statistics system of BSC.

Chapter 1 is a brief introduction of the fundamental principle of the traffic statistic

system of BSC.

Chapter 2 introduces in detail the traffic statistic operations of BSC.

Chapter 3 introduces in detail each statistic item that Huawei BSC offers.

Chapter 4 introduces in detail the problems operator will encounter in traffic statistic

and the way to solve them.

Target Readers

The manual is intended for the following readers:

z GSM maintenance engineer

z Operation & maintenance personnel

Conventions

This document uses the following conventions:

I. General conventions

Convention Description

Arial Normal paragraphs are in Arial.

Arial Narrow Warnings, cautions, notes and tips are in Arial Narrow.Terminal Display Terminal Display is in Courier New; message input by the user via the

terminal is in boldface.


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II. GUI conventions

Convention Description

< > Message entered via the terminal is within angle brackets.

[ ]MMIs, menu items, data table and field names are inside square brackets[ ].

/Multi-level menus are separated by forward slashes (/). For example,[File/Create/Folder].

III. Keyboard operation

Format Description

Press the key with key name expressed with a pointed bracket, e.g., , , or.

Press the keys concurrently; e.g. means the three keysshould be pressed concurrently.

Press the keys in turn, e.g. means the two keys should be pressedin turn.

[Menu Option]The item with a square bracket indicates the menu option, e.g. [System]option on the main menu. The item with a pointed bracket indicates thefunctional button option, e.g. button on some interface.

[Menu1/Menu2/Menu3]

Multi-level menu options, e.g. [System/Option/Color setup] on the main

menu indicates [Color Setup] on the menu option of [Option], which is onthe menu option of [System].

IV. Mouse operation

Action Description

Click Press the left button or right button quickly (left button by default).

Double Click Press the left button twice continuously and quickly.

Drag Press and hold the left button and drag it to a certain position.

V. Symbols

Eye-catching symbols are also used in this document to highlight the points worthy of

special attention during the operation. They are defined as follows:

Caution, Warning, Danger: Means reader be extremely careful during the

operation.


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Note, Comment, Tip, Knowhow, Thought: Means a complementary description.


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Traffic Statistic ManualM900/M1800 Base Station Controller Table of Contents

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Table of Contents

Chapter 1 Overview....................................................................................................................... 1-11.1 Brief Introduction................................................................................................................ 1-11.2 Contents and Principles of Traffic Statistics ...................................................................... 1-11.3 Concept of Traffic Statistics............................................................................................... 1-3

1.3.1 Traffic Statistics Task.............................................................................................. 1-31.3.2 Index Property......................................................................................................... 1-41.3.3 Task Object Property .............................................................................................. 1-51.3.4 Task Time Property................................................................................................. 1-51.3.5 Measurement task status........................................................................................ 1-6

1.4 Feature of Traffic Statistics................................................................................................ 1-7Chapter 2 Operation of Traffic Statistics .................................................................................... 2-1

2.1 Overview............................................................................................................................ 2-12.1.1 Brief Introduction..................................................................................................... 2-12.1.2 Brief Introduction to Traffic statistics Operation ...................................................... 2-22.1.3 Logging in BSC Traffic Statistics System................................................................ 2-32.1.4 Logging in Traffic Statistics Report System ............................................................ 2-6

2.2 Points for Attention ............................................................................................................ 2-72.3 Creating Traffic Statistics Task.......................................................................................... 2-92.4 Modifying Traffic Statistics Task ......................................................................................2-22

2.4.1 Modifying Task Name ........................................................................................... 2-232.4.2 Modifying Permanent Task Period........................................................................ 2-242.4.3 Modifying Task Configuration Information ............................................................ 2-24

2.5 Halting/Activating Measurement Task ............................................................................. 2-262.5.1 Halting task............................................................................................................ 2-262.5.2 Activating task ....................................................................................................... 2-26

2.6 Refreshing Task List ........................................................................................................ 2-272.7 Querying Traffic Statistics Task ....................................................................................... 2-27

2.7.1 Querying Task Status............................................................................................ 2-272.7.2 Querying Detailed Information of Task ................................................................. 2-282.7.3 Querying Backup of Detailed Task Information .................................................... 2-29

2.8 Querying Measurement Result ........................................................................................ 2-302.9 Deleting Traffic Statistics Task ........................................................................................ 2-40

2.9.1 Deleting Task ........................................................................................................ 2-402.9.2 Deleting Backup Task ........................................................................................... 2-41

2.10 Querying Real-time Counter.......................................................................................... 2-412.11 Template Management.................................................................................................. 2-44

2.11.1 Creating Item Template....................................................................................... 2-44


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2.11.2 Creating Time Template...................................................................................... 2-462.11.3 Creating Object Template ................................................................................... 2-46

2.12 Customizing Item........................................................................................................... 2-462.13 Refreshing All Templates............................................................................................... 2-50

2.14 Other Operations ........................................................................................................... 2-51

2.14.1 Setting shortcut buttons in the Result Window ................................................... 2-512.14.2 Customizing Setting ............................................................................................ 2-51

Chapter 3 Traffic Statistic Items .................................................................................................. 3-13.1 BSC measurement function............................................................................................... 3-1

3.1.1 General.................................................................................................................... 3-13.1.2 Statistic Items.......................................................................................................... 3-7

3.2 SCCP Measurement Function......................................................................................... 3-883.2.1 General..................................................................................................................3-883.2.2 Statistic items ........................................................................................................ 3-89

3.3 A-interface Operation and Management Statistic............................................................ 3-963.3.1 General..................................................................................................................3-963.3.2 Statistic Items........................................................................................................ 3-97

3.4 A-interface Equipment Maintenance Statistic................................................................ 3-1013.4.1 General................................................................................................................ 3-1013.4.2 Statistic Items...................................................................................................... 3-101

3.5 A-interface Trunk Board Message Statistic ................................................................... 3-1033.5.1 General................................................................................................................ 3-1033.5.2 Statistic Items...................................................................................................... 3-104

3.6 CPU Measurement Function ......................................................................................... 3-1053.6.1 General................................................................................................................ 3-1053.6.2 Statistic Items...................................................................................................... 3-107

3.7 BSC Cell Broadcast Measurement................................................................................ 3-1073.7.1 General................................................................................................................ 3-1073.7.2 BSC Cell Broadcast Measurement Function (Total) ........................................... 3-1083.7.3 BSC Cell Broadcast Measurement Function (Period)......................................... 3-1223.7.4 BSC Cell Broadcast Measurement Function (Others) ........................................ 3-124

3.8 MTP Measurement Function ......................................................................................... 3-1253.8.1 General................................................................................................................ 3-1253.8.2 Statistic Items...................................................................................................... 3-126

3.9 Cell Measurement Function........................................................................................... 3-1313.9.1 SDCCH Measurement Function.......................................................................... 3-1313.9.2 TCH Measurement Function............................................................................... 3-1493.9.3 Random Access Measurement Function............................................................ 3-1853.9.4 Inter-cell Handover Measurement Function........................................................ 3-1923.9.5 Intra-cell Handover Measurement Function........................................................ 3-2393.9.6 Other Measurement Function ............................................................................. 3-247

3.10 Power Control Measurement....................................................................................... 3-260


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3.10.1 General.............................................................................................................. 3-2603.10.2 Statistic Items.................................................................................................... 3-261

3.11 Call Drop Measurement............................................................................................... 3-2653.11.1 General.............................................................................................................. 3-265

3.11.2 Full Rate Call Drop Measurement..................................................................... 3-2653.11.3 Half Rate Call Drop Measurement .................................................................... 3-268

3.12 SITE Initial Measurement Function.............................................................................. 3-2703.12.1 General.............................................................................................................. 3-2703.12.2 Statistic Items.................................................................................................... 3-271

3.13 BTS Initial Measurement Function............................................................................... 3-2733.13.1 General.............................................................................................................. 3-2733.13.2 Statistic Items.................................................................................................... 3-274

3.14 Cell Broadcast Statistic................................................................................................ 3-2763.14.1 General.............................................................................................................. 3-2763.14.2 Statistic Items.................................................................................................... 3-276

3.15 Outgoing Inter Cell Handover Measurement Function................................................ 3-2773.15.1 General.............................................................................................................. 3-2773.15.2 Statistic Items.................................................................................................... 3-279

3.16 Incoming Inter Cell Handover Measurement Function................................................ 3-3053.16.1 General.............................................................................................................. 3-3053.16.2 Statistic Items.................................................................................................... 3-306

3.17 Undefined Adjacent Cell Measurement Function ........................................................ 3-3093.17.1 General.............................................................................................................. 3-3093.17.2 Statistic Items.................................................................................................... 3-310

3.18 Defined Adjacent Cell Measurement Function ............................................................ 3-3123.18.1 General.............................................................................................................. 3-3123.18.2 Statistic Items.................................................................................................... 3-313

3.19 Receiving Quality Measurement.................................................................................. 3-3143.19.1 General.............................................................................................................. 3-3143.19.2 Full Rate Receiving Quality Measurement........................................................ 3-3153.19.3 Half Rate Receiving Quality Measurement....................................................... 3-319

3.20 Receiving Level Measurement Function .....................................................................3-3243.20.1 General.............................................................................................................. 3-3243.20.2 Full Rate Receiving Level Measurement .......................................................... 3-3253.20.3 Half Rate Receiving Level Measurement.......................................................... 3-355

3.21 Up-Down Link Balance Measurement Function .......................................................... 3-3863.21.1 General.............................................................................................................. 3-3863.21.2 Statistic Items.................................................................................................... 3-387

3.22 LAPD Link Measurement Function.............................................................................. 3-3893.22.1 General.............................................................................................................. 3-3893.22.2 Statistic Items.................................................................................................... 3-391

3.23 Channel Allocation Measurement Function................................................................. 3-402


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3.23.1 SDCCH Allocation Measurement Function....................................................... 3-4023.23.2 TCH Allocation Measurement Function ............................................................ 3-4093.23.3 TRX Level Measurement Function.................................................................... 3-417

3.24 Cell Flow Control Measurement Function ................................................................... 3-421

3.24.1 General.............................................................................................................. 3-4213.24.2 Statistic Items.................................................................................................... 3-422

3.25 GPRS Related Measurement Function ....................................................................... 3-4263.25.1 General.............................................................................................................. 3-4263.25.2 Statistic Items.................................................................................................... 3-427

3.26 Overlaid/Underlaid Subcell Measurement ................................................................... 3-4303.26.1 General.............................................................................................................. 3-4303.26.2 Statistic Items.................................................................................................... 3-432

3.27 Cell Measurement Function (2) ...................................................................................3-4453.27.1 General.............................................................................................................. 3-4453.27.2 Statistic Items.................................................................................................... 3-452

3.28 Cell Measurement Function (3) ...................................................................................3-5343.28.1 General.............................................................................................................. 3-5343.28.2 Statistic Items.................................................................................................... 3-537

3.29 Abis-interface BTS CRC Measurement Function........................................................ 3-5583.29.1 General.............................................................................................................. 3-5583.29.2 Statistic Items.................................................................................................... 3-560

3.30 Call Allocation by TA Measurement Function.............................................................. 3-5613.30.1 General.............................................................................................................. 3-5613.30.2 Statistic Items.................................................................................................... 3-563

3.31 Call Drop on TRX Measurement Function................................................................... 3-5633.31.1 General.............................................................................................................. 3-5633.31.2 Call Drop Measurement by TA Function........................................................... 3-5643.31.3 Call Drop Measurement by Receiving Level Function...................................... 3-5653.31.4 Call Drop Measurement by Receiving Quality Function ................................... 3-567

3.32 Cell Frequency Scan ................................................................................................... 3-5693.32.1 General.............................................................................................................. 3-5693.32.2 Principle............................................................................................................. 3-569

Chapter 4 Troubleshooting .......................................................................................................... 4-14.1 Process of Trouble Shooting ............................................................................................. 4-14.2 Fault in Starting Traffic Statistics Console......................................................................... 4-34.3 Operations of Traffic Statistics Task Failed....................................................................... 4-4

4.3.1 No Resources Available.......................................................................................... 4-44.3.2 No enough disk space............................................................................................. 4-54.3.3 Task Frame Length Exceeding the restriction of BAM and Host ............................ 4-54.3.4 Statistic Item Description Error or Number of Item Error ........................................ 4-64.3.5 Too Large HDD Space Needed for Saving Task Result......................................... 4-64.3.6 This Statistic Function Type already Exists in Other Tasks.................................... 4-7


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4.3.7 Other User is Registering Scan Freq. Task ............................................................ 4-74.3.8 Statistic items cannot be resolved........................................................................... 4-8

4.4 Querying Traffic Statistics Result Error.............................................................................. 4-84.4.1 Measurement Result Abnormal after Changing the Time of BAM and Server....... 4-8

4.4.2 Task Results Incomplete due to Daylight Savings Time Switching ........................ 4-94.4.3 Measurement Result of Percentage of CPU Occupation Being 0 ........................ 4-104.4.4 Times of Successful Being 0/ Success rate Being *****........................... 4-104.4.5 Average Inter Arrival Time of Random Access being "*****"................................. 4-114.4.6 Unknown statistic items Appearing in Item Value of Task Result ...................... 4-114.4.7 "?" Appearing in Task Value of Measurement Result ........................................... 4-114.4.8 Column Irregular.................................................................................................... 4-12

4.5 Operations on Template and Item File Failed ................................................................. 4-124.5.1 Item File or Template Being Modified ................................................................... 4-124.5.2 FTP Connection Failed, Authentication Failed, Sending or Receiving File Failed4-13

4.6 Response Speed of Traffic Statistics Console Slowing Down ........................................ 4-134.7 Others .............................................................................................................................. 4-13

4.7.1 Status of Module in "Task Status" not Reflecting Actual Situation ....................... 4-144.7.2 "Can't open help file!............................................................................................ 4-144.7.3 Converting Result Timeout.................................................................................... 4-144.7.4 Halting measurement task failed........................................................................... 4-154.7.5 Activating measurement task failed ...................................................................... 4-154.7.6 Limit of statistics for TRX ...................................................................................... 4-164.7.7 Some object not exist in the statistics result after dynamic add objects.............. 4-16


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List of Figures

Figure 1-1 BSC traffic statistics system network architecture................................................1-2Figure 1-2 BSC traffic statistics system logic structure..........................................................1-2Figure 1-3 Basic time type ..................................................................................................... 1-5Figure 1-4 Measurement task change...................................................................................1-7Figure 2-1 Process of traffic statistics ....................................................................................2-2Figure 2-2 Interface of traffic statistics system.......................................................................2-3

Figure 2-3 Logging in OMC SHELL .......................................................................................2-4Figure 2-4 Logging in traffic statistics system from OMC SHELL.......................................... 2-4Figure 2-5 Logging in OMC LocalWS ....................................................................................2-5Figure 2-6 Logging in traffic statistics system from OMC LocalWS....................................... 2-5Figure 2-7 Logging in iManager M2000.................................................................................2-5Figure 2-8 Logging in traffic statistics system from iManager M2000....................................2-6Figure 2-9 Logging in report system ......................................................................................2-7Figure 2-10 Registering new task ........................................................................................2-13Figure 2-11 Setting task name .............................................................................................2-14Figure 2-12 Too many statistic items selected, registration failed .......................................2-16Figure 2-13 Set time property 1 ...........................................................................................2-17Figure 2-14 Set time property 2 ...........................................................................................2-17Figure 2-15 Error when the measurement result storage time is too long...........................2-19Figure 2-16 Object definition 1.............................................................................................2-20Figure 2-17 Object definition 2.............................................................................................2-20Figure 2-18 Registering tasks 5 ...........................................................................................2-22Figure 2-19 BSC task management menu........................................................................... 2-23Figure 2-20 Interface of modifying the name of a task ........................................................ 2-24Figure 2-21 Modify task configuration.................................................................................. 2-25


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Figure 2-22 Interface of task detailed information................................................................2-28Figure 2-23 Backup of detailed task information.................................................................. 2-30Figure 2-24 Querying the result of a permanent task ..........................................................2-31

Figure 2-25 Query task result of normal tasks .....................................................................2-32Figure 2-26 Shortcut keys in the result window...................................................................2-32Figure 2-27 Selecting the items to be displayed in the task result interface........................2-33Figure 2-28 Task statistic result............................................................................................2-34Figure 2-29 Task statistic result............................................................................................2-34Figure 2-30 Diagram............................................................................................................2-35Figure 2-31 Diagram configuration ...................................................................................... 2-36Figure 2-32 Configuring conditions of querying the task result database............................2-37Figure 2-33 Item filtering condition.......................................................................................2-38Figure 2-34 SQL conditional query statement .....................................................................2-39Figure 2-35 Data query result .............................................................................................. 2-40Figure 2-36 Real-time counter query ...................................................................................2-42Figure 2-37 Real-time counter query result .........................................................................2-43Figure 2-38 Add counters.....................................................................................................2-44Figure 2-39 Interface of item template management........................................................... 2-45Figure 2-40 Interface of customizing items 1....................................................................... 2-47Figure 2-41 Creating customized item 1.............................................................................. 2-48Figure 2-42 Creating customized item 2.............................................................................. 2-49Figure 2-43 Creating customized item 3.............................................................................. 2-50Figure 2-44 Shortcut buttons ...............................................................................................2-51Figure 2-45 Customizing setting color setting...................................................................2-52Figure 2-46 Customizing setting printer setting ................................................................2-52Figure 2-47 Setting the printing font..................................................................................... 2-53Figure 3-1 CM SERVICE REQUEST rejection process ........................................................3-8Figure 3-2 Circuit paging process ........................................................................................3-10


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Figure 3-3 CCCH overload process..................................................................................... 3-11Figure 3-4 Packet paging process .......................................................................................3-12Figure 3-5 immediate assignment transmission process.....................................................3-13

Figure 3-6 Packet immediate channel assignment procedure ............................................3-13Figure 3-7 CC connection establishment process...............................................................3-15Figure 3-8 Immediate assignment procedure-channel seizure procedure..........................3-19Figure 3-9 Assignment procedure-channel seizure procedure............................................ 3-19Figure 3-10 Intra-BSC handover channel seizure procedure ..............................................3-20Figure 3-11 Incoming BSC handover channel seizure procedure....................................... 3-20Figure 3-12 TCH drop for assignment ................................................................................. 3-23Figure 3-13 Drop for Intra BSC handover............................................................................3-23Figure 3-14 Incoming BSC TCH handover procedure......................................................... 3-24Figure 3-15 Successful TCH seizures for very early assignment procedure.......................3-24Figure 3-16 TCH drop for very early assignment................................................................. 3-26Figure 3-17 Immediate assignment procedure-channel seizure procedure........................3-27Figure 3-18 Intra-BSC handover channel seizure procedure ..............................................3-27Figure 3-19 Intra-BSC handover channel seizure procedure ..............................................3-28Figure 3-20 Assignment implementation process................................................................3-30Figure 3-21 Successful intracell handover...........................................................................3-37Figure 3-22 Unsuccessful intracell handover.......................................................................3-39Figure 3-23 internal intercell handover ................................................................................3-40Figure 3-24 Successful internal intercell handover (DIRECTED RETRY)........................... 3-43Figure 3-25 Successful Internal intercell handover (not DIRECTED RETRY) ....................3-43Figure 3-26 Intra BSC handover..........................................................................................3-45Figure 3-27 Successful incoming BSC handover ................................................................3-46Figure 3-28 Unsuccessful incoming BSC handover ............................................................3-53Figure 3-29 Incoming BSC handover...................................................................................3-58Figure 3-30 Attempted outgoing BSC handover ..................................................................3-59


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Figure 3-31 Successful outgoing BSC handover................................................................. 3-63Figure 3-32 Unsuccessful outgoing BSC handovers........................................................... 3-66Figure 3-33 Unsuccessful BSC internal handovers .............................................................3-81

Figure 3-34 Signaling channel request procedure...............................................................3-83Figure 3-35 Establishment of SCCP signaling connection (successful).............................. 3-91Figure 3-36 Establishment of SCCP signaling connection (failure) .....................................3-93Figure 3-37 Establishment of SCCP signaling connection and data transmission.............. 3-94Figure 3-38 Transmission of SCCP signaling ......................................................................3-95Figure 3-39 Send broadcast short message...................................................................... 3-110Figure 3-40 Delete short message..................................................................................... 3-110Figure 3-41 Query broadcast channel ................................................................................3-111Figure 3-42 Query the transmission of broadcast short message..................................... 3-112Figure 3-43 Set DRX mode................................................................................................ 3-112Figure 3-44 Reset cells ...................................................................................................... 3-113Figure 3-45 BTS reports CBCH overflow........................................................................... 3-117Figure 3-46 Received "write" messages............................................................................ 3-118Figure 3-47 Immediate assignment procedure-channel seizure procedure......................3-135Figure 3-48 Assignment procedure-channel seizure procedure........................................ 3-136Figure 3-49 Intra-BSC handover channel seizure procedure ............................................3-137Figure 3-50 Incoming BSC handover channel seizure procedure.....................................3-138Figure 3-51 Classmark change procedure.........................................................................3-189Figure 3-52 Outgoing internal inter cell handovers............................................................ 3-198Figure 3-53 Attempted outgoing inter BSC inter cell handovers........................................ 3-199Figure 3-54 Successful incoming internal inter cell handovers (directed retry)................. 3-215Figure 3-55 Successful intraBSC handovers (not directed retry) ......................................3-215Figure 3-56 Successful incoming inter BSC internal inter cell handovers .........................3-216Figure 3-57 Successful outgoing inter BSC inter cell handovers ......................................3-219Figure 3-58 Unsuccessful incoming internal inter cell handovers .....................................3-224


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Figure 3-59 Unsuccessful outgoing internal inter cell handovers ......................................3-228Figure 3-60 Unsuccessful incoming inter BSC inter cell handovers.................................. 3-231Figure 3-61 Unsuccessful incoming inter BSC inter cell handovers.................................. 3-232

Figure 3-62 Unsuccessful intracell handovers................................................................... 3-243Figure 3-63 Inter BSC incoming cell handovers ................................................................3-254Figure 3-64 Unsuccessful outgoing BSC handovers......................................................... 3-256Figure 3-65 Site initialization.............................................................................................. 3-271Figure 3-66 Cell initialization failure................................................................................... 3-274Figure 3-67 Times of sending SMS broadcast...................................................................3-277Figure 3-68 Attempted outgoing inter BSC inter cell handovers........................................ 3-280Figure 3-69 Successful outgoing inter BSC inter cell handovers ......................................3-292Figure 3-70 Unsuccessful outgoing internal inter cell handovers ......................................3-303Figure 3-71 Unsuccessful outgoing BSC handovers......................................................... 3-303Figure 3-72 Successful incoming internal inter cell handovers(directed retry)..................3-307Figure 3-73 Successful intraBSC handover (not DIRECTED RETRY) .............................3-308Figure 3-74 Successful incoming inter BSC internal inter cell handovers .........................3-308Figure 3-74 Unsuccessful incoming inter BSC inter cell handovers.................................. 3-542Figure 4-1 Adjusting time ....................................................................................................... 4-9


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List of Tables

Table 2-1 User authorities ......................................................................................................2-8Table 2-2 BSC indices concerning maximum/minimum values .............................................2-9Table 2-3 Basic tasks needed during the normal operation of BSC..................................... 2-10Table 2-4 Basic statistic items needed during the BSC normal running ..............................2-10Table 2-5 Object information of measurement task created during BSC normal running.... 2-12Table 2-6 Time information of measurement task needed during BSC normal running ...... 2-12

Table 2-7 Description of the interface of creating tasks .......................................................2-14Table 2-8 Description of the buttons in the interface of creating tasks................................. 2-15Table 2-9 Time definition of a new task................................................................................2-18Table 2-10 Description of special parameters...................................................................... 2-21Table 2-11 Task status description .......................................................................................2-27Table 2-12 Options for querying a permanent traffic statistics task ..................................... 2-31Table 2-13 Settings of querying task results ........................................................................2-32Table 2-14 BSC preset item template .................................................................................. 2-44Table 2-15 Interface of adding items ....................................................................................2-48Table 3-1 Statistic items in BSC Measurement Function .......................................................3-1Table 3-2 Statistic items in SCCP Measurement Function...................................................3-89Table 3-3 Statistic items in A-interface Operation and Management Statistic...................... 3-96Table 3-4 Statistic items in A-interface Equipment Maintenance Statistic.......................... 3-101Table 3-5 Statistic items in A-interface Operation and Management Statistic.................... 3-103Table 3-6 Statistic items in CPU Measurement Function ...................................................3-106Table 3-7 Statistic items in BSC Cell Broadcast Measurement Function (Total)................3-108Table 3-8 Statistic items in BSC Cell Broadcast Measurement Function(Period).............. 3-123Table 3-9 Statistic items in BSC Cell Broadcast Measurement Function (Others) ............3-124Table 3-10 Statistic items in MTP Measurement Function .................................................3-125


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Table 3-11 Statistic items in SDCCH Statistic Items........................................................... 3-132Table 3-12 Statistic items in TCH statistic items.................................................................3-149Table 3-13 Random access measurement items............................................................... 3-185

Table 3-14 Statistic items in Inter-cell Handover Measurement Function ..........................3-192Table 3-15 Statistic items in intra-cell handover measurement function ............................3-239Table 3-16 Statistic items in other measurement function..................................................3-248Table 3-17 Power control measurement items................................................................... 3-260Table 3-18 Full rate call drop measurement indices ..........................................................3-265Table 3-19 Half rate call drop measurement ......................................................................3-268Table 3-20 Statistic items in A-interface Operation and Management Statistic.................. 3-270Table 3-21 Statistic items in BTS Initial Measurement Function ........................................3-273Table 3-22 Statistic items in Cell broadcast statistic...........................................................3-276Table 3-23 Statistic items in Outgoing Inter Cell Handover Measurement Function.......... 3-278Table 3-24 Statistic items in Incoming Inter Cell Handover Measurement Function.......... 3-306Table 3-25 Statistic items in Undefined Adjacent Cell Measurement Function..................3-310Table 3-26 Statistic items in Defined Adjacent Cell Measurement Function......................3-312Table 3-27 Receiving quality level and BER correspondence ...........................................3-314Table 3-28 Full rate receiving quality measurement items................................................. 3-315Table 3-29 Half rate receiving quality measurement..........................................................3-319Table 3-30 Correspondence between receiving levels and their ranks ............................. 3-324Table 3-31 Correspondence between receiving quality ranks and BER............................3-324Table 3-32 Items of full rate receiving level measurement................................................. 3-325Table 3-33 Items of half rate receiving level measurement................................................3-355Table 3-34 Relation between uplink/downlink balance rank and receiving level ............... 3-386Table 3-35 Up-down link balance measurement items ......................................................3-387Table 3-36 LAPD link measurement items......................................................................... 3-390Table 3-37 Statistic items in Channel Allocation Measurement Function........................... 3-402Table 3-38 Statistic items in TCH Allocation Measurement Function................................. 3-409


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Table 3-39 Statistic items in TRX Level Measurement Function........................................ 3-417Table 3-40 Statistic items in Cell Flow Control Measurement Function .............................3-421Table 3-41 GPRS performance measurement................................................................... 3-427

Table 3-42 Statistic items in Overlaid/underlaid subcell measurement items ....................3-430Table 3-43 Cell Measurement Function (2) items ..............................................................3-446Table 3-44 Statistic items in Cell Measurement Function (3) .............................................3-534Table 3-45 Statistic items in Abis-interface BTS CRC Measurement Function.................. 3-559Table 3-46 Statistic items in Call Allocation by TA Measurement Function ........................3-561Table 3-47 Statistic items in Call Drop Measurement by TA Function................................ 3-564Table 3-48 Statistic items in Call Drop Measurement by Receiving Level Function ..........3-566Table 3-49 Statistic items in Call Drop Measurement by Receiving Quality Function........3-567


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Traffic Statistic ManualM900/M1800 Base Station Controller Chapter 1 Overview

1-1

Chapter 1 Overview

1.1 Brief Introduction

BSC Traffic Statistics (also known as performance measurement) is the data statistics

collection activities performed on BSC and its related network for the purpose of

measurement and observation of the operation, signaling, user and system resource

utilization so as to provide reliable data basis for communication network planning,

monitoring and maintenance.

BSC traffic statistics system supports the following functions: BSC Measurement

Function, SCCP Measurement Function, A-interface Operation and Management

Statistic, A-interface Equipment Maintenance Statistic, A-interface Trunk Board

Message Statistic, CPU Measurement Function, BSC Cell Broadcast Measurement

Function, MTP Measurement Function, Cell Measurement Function, Power-Control

Measurement Function, Call Drop Measurement Function, Site Initialization

Measurement Function, BTS Initialization Measurement Function, Cell Broadcast

Statistic, Outgoing Inter Cell Handover Measurement Function, Incoming Inter Cell

Handover Measurement Function, Undefined Adjacent Cell Measurement Function,

Defined Adjacent Cell Measurement Function, Receiving Quality MeasurementFunction, Receiving Level Measurement Function, Up-Down Link Balance

Measurement Function, LAPD Link Measurement Function, Channel Allocation

Measurement Function, Cell Flow Control Measurement Function, GPRS Related

Measurement Function, Overlaid/Underlaid Subcell Cell Measurement Function and

Cell Frequency Scan, etc.

The major achievement includes:

z Important monitoring mode of the routine maintenance of equipment

z Important data source for network optimization

z Abnormality locating and fault handlingz Routine data for network management

1.2 Contents and Principles of Traffic Statistics

BSC traffic statistics system consists of the host equipment, BAM (Back Administration

Module) and WS (Work Station). Among them, the work station is the man-machine

interface, a friendly operation interface provided for traffic statistics. The work station of

BSC communicates with BAM as a far end user via OMC server or directly

communicates with BAM as a near end user. The functions provided under both modes

are completely the same.


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BSC traffic statistics system network architecture is shown in Figure 1-1 and the logic

structure is shown in Figure 1-2. Both OMC Shell and LocalWS are software installed in

WS, and OMC Shell communicates with BAM via OMC Server, while LocalWS

communicates with BAM directly.

...

BAM

OMC Server

WS

MPU

Trafficstatisticsprocess 1

...

WS WS

Trafficstatisticsprocess 2

Trafficstatisticsprocess n

Figure 1-1BSC traffic statistics system network architecture

OMC ServerOMC Shell

Local WS

IP

IP

IP

BAM

MPU

Traffic statisticsprocess

Figure 1-2BSC traffic statistics system logic structure

Below is the introduction to the functions of each part:

1) WS provides the direct operation interface for the user to register or delete the

traffic measurement tasks or to view the status and result of a task.

2) OMC Server provides the interface to network management centre, and manage

statistic tasks. It gets the data necessary for the traffic statistics from the Host via

the traffic statistics process in BAM.

3) BAM has two functions:

a) The bridge connecting WS and MPU board, via which the traffic statisticscommands from WS is transferred to MPU, and the response of MPU is returned

to WS;

b) The server in the Client/Server network mode, which realizes the management

of statistics tasks (mainly about the storage and transference of traffic statistics

data).

4) Traffic statistics process is actually a service process in charge of receiving and

interpreting the traffic statistics commands from BAM. The result of the interpreting

is the basis for processing and the processing result will be returned back to BAM.


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The core function of it is to generate statistics from the result of various

measurement indices.

The following is the summary to the above information. User registers tasks at WS. The

commands registering the tasks are sent to the MPU board. When a measurementcycle ends, the MPU automatically sends the measurement results to BAM which will

store the results in the format of Stxxx.res and Stxxx.tsk and in the directory of

\omc\bsc\BAM\appsvr\stats\Data, sends the permanent task result to OMC Server.

OMC Server will save the measurement result in Sybase database to generate the

report at report console. The user can query and print the traffic measurement report

stored in BAM at the WS.

Note:WS consists of several functional modules which provide the operations and maintenance interface for the

user to realize the functions of data configuration, equipment maintenance, fault monitoring, subscriber

management and traffic statistics via this subsystem. It communicates with BAM to realize various

operations and output the corresponding report.

Huawei's OMC adopts the integrated platform, which supports Huawei's GSM serial products access to

provide unified performance management, configuration management and fault management. The

operation and maintenance of multiple NEs can be implemented at the same terminal.

BAM fulfils the following functions:

z Background administration: data configuration of BSC, maintenance control of board, alarm handling,

traffic statistics, data backup etc;

z Save the converted data and send the operation instruction to MPU;

z Connection between equipment and user: receiving the commissioning, alarm of equipment and

notifying the user via LMT (WS).

For information related to traffic statistics of OMC Report, refer to the system operation part in

M900/M1800 Operations and Maintenance Center User Manual V4.0.

1.3 Concept of Traffic Statistics

1.3.1 Traffic Statistics Task

The core of traffic statistics is traffic statistics (measurement) task and traffic statistics

(measurement) result. User can "subscribe" to the necessary traffic statistics data. The

subscribed information makes up the traffic task. The system will implement the related

measurement according to the measurement task information and report the task

result.


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A measurement task is made up of three elements: statistics time, statistics object,

statistics item (index). For details of these properties, refer to 1.3.2 Index Property,

1.3.3 Task Object Property and 1.3.4 Task Time Property.

Besides, in the whole statistics procedure of the task, there is a series of status from

"not started" to "ended", which will be detailed in 1.3.5 Measurement task status.

1.3.2 Index Property

I. Definition

Task index is the type of information to be "subscribed to" during the process of

measurement. The process of data collection, data record and data supervision during

the measurement is actually the process of management over the task indices.

The traffic statistics indices of BSC can be classified into initial index, pre-definition

index and customized index. The initial index is the basic unit of system index. The

pre-definition index is calculated from the initial index. The above two are the

self-contained indices of system. In addition, to satisfy the user's special requirements,

BSC also supports customized index function. Customized index is created by

combining initial index and pre-definition index in arithmetic principle according to the

actual requirement. The usage of these indices is same as initial index and

pre-definition index.

II. Organization mode

Since a traffic statistics system contains many statistics indices, for the convenience of

management and usage over these indices, the tree organization structure comprises

three stages. The first stage is Statistic Function Type, the second stage is Measure

Type and the third stage is Statistic Item.

Statistic Items are classified as a Measure Type. The Measurement types with similar

meanings are classified as a Statistic Function Type.

z Statistic Function Type

The set of several measurement types with some identical properties. Each

statistics function type describes a certain aspect of BSC equipment, such as

A-interface Operation and Management Statistic, CPU Measurement Function,

etc.

z Measure Type

Measurement type is the set of several related statistics indices of a measurement

object. It reflects the entire profile of the object. For example: Inter-cell Handover

Measurement Function describes the information of inter-cell handover.

z Statistic Item


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It is the basic unit for measurement task to perform data statistics.

1.3.3 Task Object Property

The measurement object is various physical, logical entities or their combinations

measured. For example, to measure the TCH availability of a cell, this cell is a

measurement object. For the convenience of management and utilization, system

adopts the layered structure of Statistic Function Type Object Definition to decide a

measurement object.

1.3.4 Task Time Property

Time property includes parameters such as task type, time type, measurement cycle

and measurement time segment, etc. The management of measurement time can be

realized in the following three levels: time type, measurement time segment and

measurement cycle, as shown in Figure 1-3:

0:00 24:00

Time type

Measurement

time segment

Measurement

cycle

Date Date Date Date Date DateDate Date

Figure 1-3Basic time type

1) Task type

Measurement tasks can be classified into permanent task, semi-permanent task and

limited period task.

z Permanent task

Permanent task is automatically registered from the moment system is started. It

is for measuring the important performance index, and generates reports

according to the requirement of the carrier. User cannot delete this type of tasks,

i.e. from the moment equipment is started, this task is carried out all the time

unless suspended;

z Semi-permanent task

Semi-permanent task is registered by the user and has no end time. It will keep

running unless deleted or suspended. For example, if a BSC measurement task is


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created on 2002/1/1, started on 2002/1/1 without a termination, this task is a

semi-permanent task.

z Limited period task

Limited period task is registered by the user. It has an end time configured. When

the end time comes, the measurement is automatically terminated. For example,

the task temporarily measuring the TCH congestion rate can be set as the limited

period task.

2) Time type

There are three types: statistics by day, statistics by week and statistics by month.

They define the periodical operation mode of the task during its operation.

Statistics by day means that the task is carried out every day. Statistics by week

means that the task is carried out on the specified day of each week. For example,

a user can select Monday, Wednesday and Friday of each week to implement the

task. Statistics by month means that the task is carried out on the specified day of

each month. For example, a user can select the 1st, 5

thand 13

thof each month to

carry out the task. No matter in which mode, the task will be carried out during the

time decided together by measurement time segment and measurement cycle.

3) Measurement time segment

A day can be divided into at most three time segments in this system. The task is

only carried out in the time segment according to the configured measurement

cycle, and is terminated during the time between time segments. The range of

time segments cannot overlap. The daily operation time is decided together by the

measurement time segment and measurement cycle.

z From 00:00 of each day to 00:00 of the next day;

z For 1~3 discontinuous time segments, each one is started at a certain time

point (accuracy of minute) and carried out continuously for k measurement

cycles.

4) Measurement cycle

Measurement cycle is the sampling period of the measurement task. BSC traffic

management supports the measurement cycle of 15~1440 minutes.

z The duration with one minute as the unit. Upper limit is 24 hours.

z The default period is 30 minutes.

1.3.5 Measurement task status

A measurement task may be in various statuses in its life cycle: not started, activated,

suspended and complete.

z Not started

The current time of system is earlier than the start time of the task, i.e. the task is

not started yet.


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z Activated

The current time of system is between the start time and end time of the task, i.e.

the task is being carried out.

z Suspended

When a task is temporarily not needed, it can be suspended. In this case, this task

will no longer provide measurement result. When it is necessary again, it can be

reactivated, and the measurement resumes. If a task is suspended, it cannot be

modified.

z Complete

The current time of system is or is later than the end time, i.e. the task is finished.

It is also called "terminated".

The process of measurement task change is shown in Figure 1-4.

Not started

Activated

Complete

suspended

Start time

End time

Being halted

Being activated

Figure 1-4Measurement task change

Note:According to the definition of the task:

z Permanent task can be in activated or suspended status;

z Semi-permanent task can be in not started, activated or suspended status;

z Limited period task can be in any status.

1.4 Feature of Traffic Statistics

The traffic statistics console of BSC, as a man-machine interface, supports the graphic

interface operation mode. It provides functions of task management, template


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management and customized index management. Below are the details of these

functions.

I. Task management

The task management of traffic statistics includes creating/modifying/deleting

measurement task, activating/suspending measurement task, querying measurement

task information and querying task status, etc. For detailed operation of task

management, see "Chapter 2 Basic Operation". This chapter mainly introduces the

global features.

1) Creating task

Measurement indices are organized and managed according to measurement

type. But the user may also need to measure the indices reflecting the same

service function in the same task and have the combined output (especially when

generating the traffic statistics report). BSC supports selecting the measurement

indices from multiple measurement types.

2) Modifying task

There are three types of task modifications:

z Dynamic modification of task name

z Dynamic modification of task configuration information

z Dynamic modification of task object

Note:It is not allowed to dynamically modify the suspended tasks, while possible to modify the task by

dynamically modifying the task configuration information.

3) Querying task

The information querying function can be used to query the various static

information in the MPU, including the status of task, measurement function set,time property, measurement index and object type etc.

4) Suspending/activating task

If a task is temporarily not needed, this task can be suspended. When it is

necessary to have its output result again, it can be activated, and its output will

continue.

Only activated tasks can be suspended. On the other hand, only the suspended

task can be activated. Once the task is suspended, dynamic modification of this

task will be banned, while deleting and querying task is still valid.


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initial indices and pre-definition indices after arithmetic procession based on the needs

of user.

Customized index management enables the creating, query, modification and deleting

of customized index. Besides, the user can also dynamically refresh the index list.

Similar to the initial index and pre-defined index, the customized index can be used to

create measurement task. All related initial indices and the customized indices should

belong to the same measurement function type.

System has a restriction to the number of customized indices. The current limit is 32768.

If the actual number of exceeds this limit, system will prompt the user to delete some

before adding the new ones.

Note:Initial index and pre-definition index can be used to create customized index. While the customized index

cannot be used to create another customized index.

All indices can be used in creating measurement task.

The initial indices used to create customized index should belong to the same measurement function type.


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Traffic Statistic ManualM900/M1800 Base Station Controller Chapter 2 Operation of Traffic Statistics

2-1

Chapter 2 Operation of Traffic Statistics

2.1 Overview

The operation of BSC traffic statistics is implemented on WS (Work Station), and it

mainly includes the following functions:

z Maintenance of traffic statistics tasks, including creating, modifying, activating,

halting, deleting and querying.

z Graphic display of traffic statistics data. The report of results can be listed in the

format of tables according to the queried text report. The basic querying, resultsorting and result in table printing functions are also provided. Secondary data

analysis and processing can be implemented according to the result data. The

processed data can be displayed in bar chart or curve, etc.

The traffic statistics management system can be used to monitor the network

performance, and provide basis for the network maintenance and optimization. The

major functions of traffic statistics system is task registration, task deletion, task

modification, task status querying, task result analysis, task result printing, and

customized indices, etc.

2.1.1 Brief Introduction

Traffic statistics is mainly implemented with task operation. The rough process of traffic

statistics is shown in Figure 2-1, in which the dotted line symbolizes optional steps.


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Start

Analyze requirements

Create task

End

Start measurement

Query task status

Modify task

Terminate task

Delete task

Query task result

Suspend task

Activate task

Figure 2-1Process of traffic statistics

The task management system enables the user to create traffic statistics task, modify

traffic statistics task, query detailed information of traffic statistics task, query/save/print

the result of traffic statistics task and delete traffic statistics task. The most important

step among them is creating a traffic statistics task. The others are all implemented on

the basis of it.

In addition, BSC traffic statistics system also supports:

z Template management

z Customized index management

2.1.2 Brief Introduction to Traffic statistics Operation

The WS of BSC, as the man-machine interface of traffic statistics system, provides the

graphic operation interface shown in Figure 2-2.


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Figure 2-2Interface of traffic statistics system

2.1.3 Logging in BSC Traffic Statistics System

There are three methods of Logging in BSC traffic statistics system:

In the first method, the WS connects with BSC BAM via OMC Server. In this case,

select [Startup/Programs/Huawei GSM-OMC/OMC SHELL] as shown in Figure 2-3, to

log in OMC SHELL, and then right-click the BSC icon in OMC SHELL. Select [Traffic

Statistics] in the popped up pull-down menu to enter the traffic statistics system as

shown in Figure 2-4.

In the second method, the WS connects with BSC BAM directly. In this case, select

[Startup/Programs/Huawei GSM-OMC/OMC LocalWS] as shown in Figure 2-5 to log in

OMC Local WS, and then select [Start/Task/Traffic Statistics] in OMC Local WS as

shown in Figure 2-6 to enter the traffic statistics system.

In the third method, the WS connects with BSC BAM directly, too. In this case, select

[Startup/Programs/iManager M2000/Integrated Network Management System] as

shown in the Figure 2-7 to log in iManager M2000, and then right-click the BSC icon inM2000 in the popped up pull-down menu to enter the traffic statistics system as shown

in Figure 2-8.


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Figure 2-3Logging in OMC SHELL

Figure 2-4Logging in traffic statistics system from OMC SHELL


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Figure 2-5Logging in OMC LocalWS

Figure 2-6Logging in traffic statistics system from OMC LocalWS

Figure 2-7Logging in iManager M2000


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Figure 2-8Logging in traffic statistics system from iManager M2000

2.1.4 Logging in Traffic Statistics Report System

BSC supports the report operation system under the unified management of Huawei

OMC. This system collects the traffic statistics data from the equipment's of the entire

network to generate the centralized reports conforming to network management

standard.

It is necessary to log in OMC SHELL before logging in report system. In OMC SHELL,

right-click the icon of OMC Server, and then select [Traffic Statistics Report] in the

shortcut menu to enter the main window of report system, as shown in Figure 2-9. Theoperations of traffic statistics reports include create report, delete report, browse report,

print report, save report, and modify configuration information and the time definition of

data collecting. For the detailed introduction to the report system and the operations,

please refer to the section of "System Operation" in M900/M1800 Operation and

Maintenance Center User Manual.


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Figure 2-9Logging in report system

2.2 Points for Attention

Pay attention to the following when using BSC traffic statistics tools:

1) Each traffic statistics task occupies some of the system resources. If too many

tasks are implemented simultaneously or a task is implemented too frequently, too

much resource of BSC system will be used. Therefore, there are restrictions to the

number and period of traffic statistics task in BSC system:

z At most 200 tasks can be created in each BM (Basic Module).

z At most 3000 subtasks can be created in each BM.

A traffic statistics task is divided into subtasks according to the traffic statistics

objects in the task. The number of traffic statistics objects of a traffic statistics task

equals to the number of the subtasks contained in this task. The number of

subtasks of a BM is the total number of the subtasks of all tasks created in this BM.

For example, if a BM is fully configured to supports 128 cells, there will be 128

subtasks after creating a measurement task of cell performance for "all cells in the

module".

z A task can have at most 60 different initial indices.

For example, BSC Measurement Function has more than 120 primitive indices.

Cell Measurement Function has more than 220 primitive indices. At least three

tasks are to be created to measure all indices of BSC Measurement Function. At

least four tasks are to be created to measure all indices of Cell Measurement

Function.


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Note:The number of the initial indices contained in a pre-defined index or customized index equals to the

number of initial indices that compose these pre-defined or customized indices. If an initial index and its

pre-defined or customized index are both selected as the statistic items of a traffic statistics task, this initial

index will be measured once only.

There are another two special traffic statistics types: Cell Frequency Scan and Receiving Level

Measurement Function. These two types both contain over 60 primitive indices, but it is still possible to

select over 60 initial indices in a task here.

z Minimum traffic statistics cycle: 15 minutes

If the statistic cycle is too short and the task results are too many, the system burden will

increase. Therefore, the statistic cycle should not be shorter than 15 minutes. The

default setting is 30 minutes. The maximum statistic cycle is 1440 minutes.

2) User authorities

The user authorities of OMC traffic statistics system are divided into three levels:

service query authority, service configuration authority and service management

authority. See Table 2-1.

Table 2-1User authorities

Operations allowed Service queryauthority Service configurationauthority Servicemanagementauthority

Registering tasks No Yes Yes

Deleting tasks/results NoYes (for the task registered bythis user only)

Yes

Modifying task name NoYes (for the task registered bythis user only)

Yes

Change cycle ofpermanent task

NoYes (for the task registered bythis user only)

Yes

Customized index No No Yes

Defining, saving, deletingtemplates

No Yes Yes

Browsing tasks andresults

Yes Yes Yes

3) Statistic items that cannot be registered more than once


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Do not register the statistic items concerning maximum/minimum values (e.g.

Maximum num. of busy TCHs) in multiple tasks. Otherwise, the data of these indices

may be incorrect.

The BSC traffic statistics indices concerning maximum/minimum values and their traffic

statistics function types are listed in Table 2-2.

Table 2-2BSC indices concerning maximum/minimum values

Traffic statistics function type Index concerning maximum/minimum value

CPU Measurement Function Peak percentage of CPU occupation

Cell Measurement Function Maximum num. of busy SDCCHs

Cell Measurement Function Maximum TCH queue length

Cell Measurement Function Maximum num. of busy TCHs

Power-Control Measurement Function Maximum distance between MS and BTS

Power-Control Measurement Function Maximum downlink power duration percentage

Power-Control Measurement Function Maximum uplink power duration percentage

GPRS Related Measurement Function Max num. of available PDCH

GPRS Related Measurement Function Min num. of available PDCH

4) Do not modify the time of BAM and OMC Server.

Since the management and time of traffic statistics are closely related, if the time is

modified, the result of this cycle that outputted may be incorrect.

2.3 Creating Traffic Statistics Task

I. Analyze requirements

The demand of traffic statistics usually has the following considerations: routine

maintenance, fault handling and network optimization, etc. Before creating traffic

statistics task, it is necessary to analyze the requirements of the traffic statistics to

decide the parameters of the task.

The following takes the traffic statistics tasks needed during the system normal running

as an example. Assume that this BSC contains two BMs, each of which has 120 cells.

For the tasks needed under other situations, refer to the information of various statistic

items in Chapter 3.

1) Basic information


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Task Measurementfunction type

Measurement typeconcerned

Statistic item

3

SDCCH MeasurementFunction

Random AccessMeasurement Function

Other MeasurementFunction

SDCCH and other signaling channel typemeasurement items in Cell MeasurementFunction

4TCH MeasurementFunction

Partial statistic items of TCH type in CellMeasurement Function

5

TCH MeasurementFunction

Other Measurement

Function

Residual statistic items of TCH type in CellMeasurement Function

6

Inter-cell HandoverMeasurement Function

Intra-cell HandoverMeasurement Function

Other MeasurementFunction

Handover type statistic items in CellMeasurement Function

7

CellMeasurementFunction

Inter-cell HandoverMeasurement Function

Statistic items of handover originating type inCell Measurement Function


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Note:z Since there are a large number statistic items, it is impossible to list all indices in the above table. For

the correspondence between tasks and statistic items, refer to default statistic item template of BSC

traffic statistics system.

z Since the implementation of traffic statistics task will occupy some system resources, and the number

of subtasks allowed to be created in the entire BM is limited, the following principles should be

conformed to when creating measurement tasks:

z Select statistic items concerned only;

z Arrange the pre-defined indices or customized indices processed from initial indices in the same task

with the initial indices.

3) Object information

Table 2-5Object information of measurement task created during BSC normal running

Task Task Name Object

1 BSC Measurement-Common

2 BSC Measurement-MaintenanceNo special parameters needed

3 Cell Measurement 1-SDCCH

4 Cell Measurement 2-TCH1

5 Cell Measurement 3-TCH2

6 Cell Measurement 4-Handover

7 Cell Measurement 5-Launch Handover

All cells in the module 1 and 2

z Time information

The time information settings of these five tasks are the same, as shown in Table 2-6.

Table 2-6Time information of measurement task needed during BSC normal running

Parameter Content

Task type Semi-permanent task

Beginning Date 2002-11-12

End date None

Time Type Statistic by day

Statistic Cycle 60 minutes


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Field name Meaning Value rangeRecommended

value

Intra-cell Measurement Function" or"Other Measurement Function". If

[Statistic Function Type] is "CellFrequency Scan", the measurementtype can be "Band 900" or "Band1800". In other cases, the name ofMeasure Type is the same as thename of Statistic Function Type.

All StatisticItems

Display all indices(including thecustomized indicesand index providedby Huawei) of themeasurement type

All indicesSelect the properone

SelectedItems

Display the statisticitems selected by theuser

None None

Select aTemplate

Select the statisticitem template savedbefore

The default templates andcustomized templates

None

Status barDisplay the status ofsystem operation

None None

For the description of the buttons in the interface, see Table 2-8.

Table 2-8Description of the buttons in the interface of creating tasks

Button Function

Display the interface shown in Figure 2-11

Display the interface shown in Figure 2-13 or Figure 2-14

Display the interface shown in Figure 2-16

Add the statistic items selected in [All Statistic Items] to [Selected Items]

Remove the selected statistic items from [Selected Items]

Add all statistic items in [All Statistic Items] to [Selected Items]

Remove all statistic items from [Selected Items]

Click this button to move the selected item in [Selected Items] up for a box

Click this button to move the selected item in [Selected Items] down for a box

Save the selected statistic items as a template file


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Button Function

Delete the selected templates

Register the measurement task at MPU of BSC

Quit this interface

When registering a statistic task, the statistic items of the same statistics function type

but different measurement types can be selected as needed. The total number of initial

indices cannot exceed the limit of 60. Otherwise, the registration of measurement task

may fail, as shown in Figure 2-12.

Figure 2-12Too many statistic items selected, registration failed

In Figure 2-11, the template function is used when selecting statistic items, i.e. "BSC

Measurement Function 1.1 (Common Statistic Template)" is selected in the dialog box

of template selection.

V. Set Sampling Time

The interface of Sampling Time is shown in Figure 2-13. To specify the days of

execution in each month select "Statistic by month" in the window of "Time Type", and

then set the measurement time. See Figure 2-14. The corresponding operation for the

weekly measurement task is similar.


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31160978-BSC Traffic Statistic Manual