01-04 Troubleshooting.pdf

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M900/M1800 Base Station Controller

Traffic Statistic Manual - Volume II Contents

Issue 01 (2008-03-14)Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltdi

Contents

4 Troubleshooting.........................................................................................................................4-1

4.1 Process of Troubleshooting................................................................. .......................................................... 4-2

4.1.1 Saving the Location Information in Time.................................................................. ..........................4-2

4.1.2 Saving the BAM Printing Message in Abnormality in Time ............................................................... 4-4

4.1.3 Troubleshooting ................................................................. .................................................................. 4-4

4.1.4 Huawei's Technical Support Engineers ...................................................................... ..........................4-4

4.2 Fault in Starting Traffic Statistics Console....................................................................................................4-4

4.3 Operations of Traffic Statistics Task Failed................................................................................... ................4-5

4.3.1 No Resources Available ......................................................................... ..............................................4-5

4.3.2 Repeated Type of Statistic Function.....................................................................................................4-5

4.3.3 Other User is Registering Scan Freq. Task...........................................................................................4-6

4.3.4 Statistic Items cannot be Resolved.......................................................................................................4-6

4.3.5 Re-registration of Minimum or Maximum Value.................................................... .............................4-6

4.4 Querying Traffic Statistics Result Error ...................................................................... ..................................4-7

4.4.1 Measurement Result Abnormal after Changing the Time of BAM and Server....................................4-7

4.4.2 Task Results Incomplete due to Daylight Savings Time Switching..................................................... 4-8

4.4.3 Measurement Result of Percentage of CPU Occupation Being 0........................................................4-8

4.4.4 Times of Successful Being 0/Success rate Being N/A..........................................................4-9

4.4.5 Task Result "N/A "...............................................................................................................................4-9

4.4.6 Task Result "-----"................................................................................................................................4-9

4.4.7 "Unknown statistic items" Appearing in Item Value of Task Result .................................................. 4-10

4.4.8 "?" Appearing in Task Value of Measurement Result ........................................................................ 4-10

4.4.9 Column Irregular................................................................................................................................4-11

4.5 Operations on Template and Item File Failed .......................................................................... ................... 4-11

4.5.1 Item File or Template Being Modified...............................................................................................4-11

4.5.2 FTP Connection Failed, Authentication Failed, Sending or Receiving File Failed............................ 4-11

4.6 Response Speed of Traffic Statistics Console Slowing Down.....................................................................4-12

4.7 Others..........................................................................................................................................................4-12

4.7.1 Status of Module in "Task Status" not Reflecting Actual Situation ................................................... 4-12

4.7.2 "Can't Open Help File!.....................................................................................................................4-13

4.7.3 Halting Measurement Task Failed......................................................................................................4-13

4.7.4 Activating Measurement Task Failed.................................................................................................4-13


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Contents


Traffic Statistic Manual - Volume II

iiHuawei Proprietary and Confidential

Copyright Huawei Technologies Co., LtdIssue 01 (2008-03-14)

4.7.5 Limit of Statistics for TRX .................................................................... ............................................4-14

4.7.6 Dynamic Added Object Disappearing in the statistics result ............................................................. 4-14


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Traffic Statistic Manual - Volume II Figures


Copyright Huawei Technologies Co., Ltdiii

Figures

Figure 4-1Adjusting time...................................................................................................................................4-7


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Tables



ivHuawei Proprietary and Confidential


Tables

Table 4-1File types ..................................................................... ................................................................ .......4-2


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Traffic Statistic Manual - Volume II 4Troubleshooting


Copyright Huawei Technologies Co., Ltd4-1

4 TroubleshootingAbout This Chapter

The following table lists the contents of this chapter.

Section Describes

4.1 Process of Troubleshooting Describes the troubleshooting process.

4.2 Fault in Starting TrafficStatistics Console

Describes the faults in starting the traffic statisticsconsole, causes for the faults, and the solutions.

4.3 Operations of Traffic Statistics

Task Failed

Describes the causes and solutions to unsuccessful

registration of traffic statistics tasks.

4.4 Querying Traffic Statistics

Result Error

Describes the causes and solutions to unsuccessful

queries about the traffic statistics results.

4.5 Operations on Template and

Item File Failed

Describes the causes and solutions to the failures in

templates and item files.

4.6 Response Speed of TrafficStatistics Console Slowing Down

Describes the cause and solutions to the slowdown ofthe speed of the traffic statistics console.

4.7 Others Describes the handling on other exceptions.


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4 Troubleshooting



4-2Huawei Proprietary and Confidential


4.1 Process of Troubleshooting

While using BSC traffic statistics system, if there is any phenomenon or fault beyond yourknowledge and no related information can be found in this manual, please handle this problem

following the steps below:

4.1.1 Saving the Location Information in Time

Data necessary for locating a problem

Assume that OMC-BSC system is installed in the path of "c:\omc" in BAM, then all task files

(including task information and data) and traffic statistics log files can be found in"c:\omc\bsc\bam\appsvr\stats" in BAM. There are three folders in this path: "data", "databak"

"log" and Rereg.

The following files and a task statistic result folder are in the data folder as Table 4-1.

Table 4-1File typesFile name Description

PubInfo.tsk For saving the public information of all tasks registered in

this BAM;

result.buf Buffer file, for saving the result frame sent to the server;

stxxx.tsk For saving the private information of each task;

stxxx. For saving the result of each task.

stxxx.idx For saving the basic information of the task.

YYMMDD The task statistic results folder of that day.

YYMMDD The statistic result index file of that day, recording the

statistic result file numbers and offsets.

xxxx.res The task statistic result file, numbered from 0001 with eachnot exceeding 10M.

"data" folder

There are four types of files in "data" folder.

PubInfo.tsk: for saving the public information of all tasks registered in this BAM;

result.buf: buffer file, for saving the result frame sent to the server;

stxxx.tsk: for saving the private information of each task;

stxxx.res: for saving the result of each task.

In the file names above, "xxx" stands for the task number. The BSC system allocates a task No. for each

measurement task which has already been registered in BSC successfully. The task No. of one task canbe found in the interface of "Data Query" where there is a window of "SQL Condition Query Statement"

display the task number as Task xxx. YYMMDD indicates year, month and day, each with two digits.


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"databak " folder

"databak" is used to backup the task information and result file when modifying the task

configuration.

log folderThere are five files in log folder.

stats.ver,for saving the information of the version modification made to the BAM;

system.log,for recording system log;

osystem.log:,system log before saving the file of system.log;

error.log,for recording the log of errors;

sysconv.log,operation log of traffic statistics result conversion program;

The BAM log file related to traffic statistics console is in "c:\omc\bamlog\logdata". The file

"htxxx.log" (xxx is the log file number) in directory [\opertations] records the operations

performed on traffic statistics console and the frame information sent from the BAM to theBSC and WS. The file htxxx.log (xxx is the log file number) in directory [\system] recordsthe system related logs.

log folder

"Rereg" is used to save the task information for statistic task resetup function.

Any of above files in the folder "data" will be recreated if it is damaged so that the system canwork normally. However, the original content of this file will be cleared and all information

related to this file will be lost. "stats.ver" in the folder "log" will be recreated whenever BAMis restarted, and "system.log", "error.log" and "sysconv.log" will be recreated when they are

damaged.

The maximum number of sub-records of No.xxx task results saved in each "stxxx" file islimited. For permanent task, the number is 65535. For normal task, the number depends on

the days specified. However, due to the space limit (max. 25 M each) for the result files. Thesize of "system.log" also has limit. The default limit is 5 M each, but this limit can be

modified by modifying "bam.ini". When the size exceeds the limit, this file will be backed upto "osystem.log", and at the same time, the original information in "system.log" is cleared.

The configurations related to traffic statistics in bam.ini is as follows:

[STATISTICS]

INSTALLED=1

"1" stands for traffic statistics has been installed.

"0" stands for traffic statistics has not been installed.

SYSLOG=1

"1" stands for system log will be saved.

"0" stands for system log wont be saved.

SYSLOGSIZE=5120

Set the min hard disk space to avoid problems caused by insufficient disk space.

Unit: M; Default: 512; Min: 256.

When there is no sufficient disk space, delete the earliest task and the operating log.

Files necessary for locating problems


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The folder of stats in [c:\omc\bsc\bam\appsvr] of the BAM or "pubinfo.tsk" in thefolders of "data" and "databak", "stxxx.tsk" and "stxxx.res" of the related task as well asall files in the folder of "log"

All BAM log files related to traffic statistics console,

All files in "c:\omc\bamlog\logdata\operations" in the BAM.

Item file: "bscterm.fml",

This file is normally located in "OMC/SHELL/xxxx/PRMMNG" in WS.

4.1.2 Saving the BAM Printing Message in Abnormality in Time

While running BSC-BAM from [Start/Programs/Huawei GSM-OMC/ BSC-BAM] , select

[Function/SavetoFile] in the interface of BAM Server. And the printing information should besaved as "txt" file.

4.1.3 Troubleshooting

Make sure to record all operations implemented before the abnormality occurs, such as

operations performed at auto configuration console and data management console, or dynamicdata configuration.

Please also remember to record the measures taken during the process of clearing the fault

according to this chapter.

4.1.4 Huawei's Technical Support Engineers

Please contact the custom support center by the following methods, and provide the data, fileand the operation steps referred above.

Hotline for technical support: 86-0755-26540036;

FAX: 86-0755-26540035;

Email: [email protected].

4.2 Fault in Starting Traffic Statistics Console

Fault Description

When you register a traffic statistics task, the system prompts The application will exit due

to the error when opening project file. or The application version is incompatible withproject file version, the application will exit.

Cause Item files of the current version which is in the folder of [AutoCfg/msmold/ current

version] in OMC Server are damaged;

The version of item file is not consistent with that of the Host selected when starting thetraffic statistics console, and as a result, the traffic statistics console cannot match thetwo.


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Measure

Reinstall BSC operations and maintenance module of Huawei GSM-OMC system or copy the

corresponding version of item files from the server to the version directory.

Do not modify the item files manually.

Do not copy item files from one version directory to a different version directory.

4.3 Operations of Traffic Statistics Task Failed

4.3.1 No Resources Available

Fault Description

When registering a traffic statistics task, if there are over 200 tasks (including permanent tasks,

system will prompt Task num. is more than the front limits or Lack of resource in the

front .

Cause

At most 200 tasks or 3000 subtasks can be created at each BM. Currently a BM supports at

most 128 cells. Therefore, under the condition of full configuration, registering a task of "CellMeasurement Function" whose object is defined as All cells in the module will register 128subtasks. When the number of subtasks contained in the tasks registered in this BM exceeds

3000 or the number of registered task exceeds 200, system will provide the corresponding

prompt of error.

Handling

Register tasks according to the actual situation. Try to avoid registering tasks with the objectof All cells in the module or similar ones. And try not to register the same statistic items

with the same objects in multiple tasks so as to avoid wasting available resources.

4.3.2 Repeated Type of Statistic Function

Fault Description

When you register a traffic statistics task, the system prompt Failed: Task belongs to this

statistic function type has existed. Can't repeatedly register.

Cause

In BSC, some statistic function type can be registered for only once. For example: CPU

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

Cell Handover Measurement Function, Defined Adjacent Cell Measurement Function,


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Undefined Adjacent Cell Measurement Function and Cell Frequency Scan. If these statisticfunction types are registered in more than one task, system will prompt this information.

Handling

Avoid registering these statistic types in more than one task.

4.3.3 Other User is Registering Scan Freq. Task

Fault Description

When you register a measurement task, the system prompts Failed: Other user is registeringscan freq. task

Cause

The task of Cell Frequency Scan cannot be registered in multiple tasks. If tasks of this statisticfunction type are registered at multiple WSs, system will give this prompt.

Handling

Avoid registering tasks of Cell Frequency Scan at multiple WSs.

4.3.4 Statistic Items cannot be Resolved

Fault Description

When you register a task, the system prompts Can't resolve computable statistic items.

Maybe items are mistaken, or lack of memory.

Cause

The memory of WS is insufficient to resolve the items selected into original items, or the

selected items include customized items, but the formula of the customized items is not in linewith system criterion.

Handling

Quit those programs temporary not needed and register the task again. If the registration fails

again, check whether the formula of the customized item is in line with the criterion. If not,delete the customized item and create another customized item to register the task.

4.3.5 Re-registration of Minimum or Maximum Value

Fault Description

When you register a task, the system prompts "Task registration failed: Re-registration ofminimum or maximum value."


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Cause

The current registered task contains the minimum or maximum value item (such as the

maximum TCH queue length) which has been registered in other task. Therefore, the previous

prompt shows up.

Handing

Remove the re-registered minimum or maximum value item and register the task again.

4.4 Querying Traffic Statistics Result Error

4.4.1 Measurement Result Abnormal after Changing the Time ofBAM and Server

Fault Description

When the time of BAM and Server has been changed, user cannot query the results of some

tasks, or the measurement results are obviously incorrect.

Cause

The management of traffic statistics depends greatly on time. A measurement result is

allocated with an index No. according to its time of generation. Its offset in the buffer, whichis the basis for recording measurement result, is also calculated from its time of generation. If

the actual time of outputting result is earlier than the time of the saved results in the file, thismeasurement result cannot be saved, and the task results during this period cannot be queried

at the Client.

For example, the measurement time of a task is 8:0010:00, and its period is 30 minutes.System has output the results twice at 8:30 and 9:00. While the time of Server is adjusted to

8:00 at 9:00, as shown in Figure 4-1,at the last result queries, the results 8:30 and 9:00 are the

ones before adjusting the time. After the time is adjusted, the results during 8:009:00 cannotbe outputted. The result outputted at 9:30 is actually the result the sums of three periodsduring 8:009:30. This result is not reliable, and can be ignored. The result at 10:00 will

recover to normal.

Figure 4-1Adjusting time8:308:00 9:00

8:00 8:30 9:00 9:30 10:00

Before adjusting

After adjusting

8:30 9:00 9:30 10:00Time to output

results


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Handling

Do not change the time of BAM or Server.

If the time of BAM or Server has been changed, please discard the first outputted

measurement result after adjusting the time.

4.4.2 Task Results Incomplete due to Daylight Savings TimeSwitching

Fault Description

On the day of time system switching daylight savings time, there is a blank in themeasurement result covering a certain period of time.

Cause

On the day of switching time system, the time is switched back for one hour. The resultsgenerated during this period cannot be queried. When switching back to normal system, there

will also be a period of time with no results save due to the one-hour-long time overlapping.

Handling

Configure the time zone in OMC Server and BAM according to actual situation so that this

abnormality will not occur to the countries or areas where daylight savings time system is notpracticed.

In the areas practicing daylight savings time system, do discard the first outputted

measurement result after the time has been changed.Do not configure different time zones on the BAMs connected to the same OMC Server.

4.4.3 Measurement Result of Percentage of CPU Occupation Being0

Fault Description

Measurement of Percentage of CPU occupation is 0.

CauseIf the occupancy of cpu is 0, then the mpu may have been restarted or switched over during

the measurement period, which results in results of this period lost or unavailable. in this case,the traffic statistics console will use "0" to indicate the measurement result. the trafficstatistics console will indicate the result availability of each object at detailed information.

The available ones are marked with "", and the unavailable ones are marked with "x".

Handling

None.


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4.4.4 Times of Successful Being 0/ Success rate Being N/A

Fault Description

Times of successful is 0, or success rate of is N/A (counter statistics).

Cause

Normally only under the situation of task result lost/unavailable, will the successful times of

be 0. In this case, Detailed Information is "".

And normally only in the case of adopting pre-defined items or customized items, will the

success rate of be N/A. The pre-defined items and customized items are calculatedfrom original items. If the measurement result corresponding to denominator part in the

formula of a pre-defined item or customized item is 0, the measurement result will be " N/A ".

Handling

None.

4.4.5 Task Result "N/A "

Fault Description

The result of a task is "N/A ".

Cause

Average inter arrival time in the BSC Measurement Function is obtained in BSC by

dividing the number of channel requests whose cause value is "Call Initiating" ("emergencycall" not included) in a measurement period. If there is no channel request whose cause value

is "Call initiating", the result of this measurement is " N/A ". This definition complies withGSM Rec. 12.04. When the number of decoding failures is 0, items maximum

non-decodable signal strength and mean non-decodable signal strength in TCHF/HMeasurement Function (3) under Cell Measurement Function (2) do not exist and are

output as N/A. When none of the signal strength can be decoded, the item lowestdecodable signal strength does not exist and is output as N/A.

For the traffic statistic items Full Rate VQI, Half Rate VQI, Main Level, and SUB

Level in the measurement type Monitor the Wireless Quality of the measurement object

Receiving Quality Measurement, if the reported values are invalid, these items displayNA.

Handling

None.

4.4.6 Task Result "-----"

Fault Description

The result of a task is -----.


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Cause

When the Host does not report a task result or the Client has not received the result from the

Host, the task result queried from the Traffic Statistics System is output as ----.

The BTS uses old and new algorithms to conduct cell frequency scanning tasks. The resultsare classified into Main/Diversity and Max Value/Min Value. The task result reported bythe old algorithm is output as Main/Diversity while the Max Value/Min Value column is

output as -----. The result reported by the new algorithm is output as Max Value/MinValue while the Main/Diversity column is output as -----.

Handling

None.

4.4.7 "Unknown statistic items" Appearing in Item Value of Task

ResultFault Description

The measurement result Unknown statistic items appears in the item value of the task result.

Cause

This item may have been deleted or cannot be found from the item file of the current version

due to version mismatch.

Handling If a customized item is deleted, select the other items for this task.

Avoid using Clients of different versions to query measurement results.

After adding a customized item and using the new customized item to register a task, besure to refresh the item files at other Clients in time.

4.4.8 "?" Appearing in Task Value of Measurement Result

Fault Description

When you query task results, "?" appears in the item value of measurement result and the

system prompts Illegal statistic item. May have been deleted!

Cause

The calculation formula of this item is invalid, or the original items contained in this item

cannot be found from the item file of the current version due to version mismatch.

Handling Check whether the calculation formula of this item is valid;

Avoid using Clients of different versions to query measurement results;


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4.4.9 Column Irregular

Fault Description

When printing measurement results, the system prompts The font you used may lead toirregular of the column, a monospaced font for example Courier New is suggested.Continue? If you continue, the columns in the printed result will be in disorder.

Cause

Before printing the measurement result, the system will calculate the width offset for eachcolumn. If non-monospaced font is selected, the position of the columns may be in disorder.

Handling

Select monospaced font to print measurement result.

4.5 Operations on Template and Item File Failed

4.5.1 Item File or Template Being Modified

Fault Description

When you modify a customized item or template, the system prompts Can't save/delete the

template because other users are operating on it. Please try it later. Or Other user is

operating. Please try it later!

Cause

The customized items, item templates, time templates and object templates of the same

version cannot be simultaneously modified at different machines.

Handling

Avoid simultaneously modifying the customized items, item templates, time templates and

object templates of the same version, which are connected to the same OMC Server at

different machines.

4.5.2 FTP Connection Failed, Authentication Failed, Sending orReceiving File Failed

Fault Description

When you modify customized items or templates, the system prompts: Failed to connect

with server by FTP!, Failed to get authentication by FTP!, Failed to send file by FTP!,Failed to get file by FTP!


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Cause

The network connecting to OMC Server is abnormal, or the initial information of the FTP

default user configured in OMC Server is modified (e.g. user deleted, password modified,

write right deleted).

Handling Check whether the network is correctly connected;

Check and restore the default FTP user information configured in OMC Server.

4.6 Response Speed of Traffic Statistics Console SlowingDown

BAM and application consoles need system resources to operate. Since it is possible to openmultiple application consoles at a BAM from multiple WSs, or open multiple applicationconsoles at multiple BAMs from WSs, the system resources may be insufficient for too manyapplications to operate. In this case, the operation may be abnormal, and BAM and

application consoles (including traffic statistics console) may not be able to respond for a long

time.

If this abnormality occurs, please close the OMC WSs not needed. Try not to open many

application consoles at a BAM from multiple WSs, nor simultaneously carry out operations of

large data size.

4.7 OthersNormally, if abnormality occurs to a measurement task, please deletes the abnormal task, and

then register it again, and the abnormality will be cleared.

4.7.1 Status of Module in "Task Status" not Reflecting ActualSituation

Fault Description

When querying task status, the status of module in "Task Status" does not reflect the actual

situation.

Cause

It is not allowed to continuously click when querying tasks status. A query

should be initiated after the previous one has been done.

Handling

Do not click continuously.


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4.7.2 "Can't Open Help File!

Fault Description

When you view the help file of traffic statistics console, the system prompts: Can't open helpfile!

Cause

The system cannot find "Bsc_stat.htm" from the current OMC installation path.

Handling

Make sure that the help file has been installed, and can be found under"\Help\BSS_OMC" in the current OMC installation path. If not, please reinstall thesystem;

Do not delete this file nor modify its file name.

4.7.3 Halting Measurement Task Failed

Fault Description

After halting the measurement task, the icon of the task is changed to be .

Cause

There is no response from the processing module of MPU or the communication connection

between MPU and BAM is interrupted.

Handling

Check and make sure that the MPU and the connection between MPU and BAM are normal.

4.7.4 Activating Measurement Task Failed

Fault Description

After activating the measurement task, the icon of the task is changed to be .

Cause

A lot of cause will lead to this failure, such as BAM allocating memory failure, no response

from MPU, failure returned from MPU.

Handling

Check and make sure that the MPU is normal.

Check and make sure the communication between BAM and MPU is normal.

Check and make sure the task meets the requirement referred in 2.2 Points for Attention.

Activate the task again.

Re-register the task with the function of modifying task configuration Information.


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Copyright Huawei Technologies Co LtdIssue 01 (2008-03-14)

4.7.5 Limit of Statistics for TRX

After the dynamic data configuration involving TRX addition/deletion, the result of the task

whose object is TRX will be incorrect for the system reconfiguration. However, this onlyaffects the task result of the cycle in which the dynamic configuration is made.

4.7.6 Dynamic Added Object Disappearing in the statistics result

Fault Description

After dynamic adding objects and checking the result of a task, some objects is found out of

the result.

Cause

Too many objects and too long result saved time for the task, and the task result file can not

save too many results.

Handling

Modify the result save time and re-register the task with the function of modifying task

configuration Information

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