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Switch to notes view!1. Mobile Radio Solutions Alcatel 9100 BTS Maintenance
Module 1. Presentation of the BTS Terminal Module 2. Definition and Handling of the Security Blocks (SBL)Module 3. Alarms and MeasurementsModule 4. Updating the internal data (Remote Inventory)Module 5. Setting the Transmission EquipmentModule 6. BTS Local MaintenanceModule 7. Appendix - Exercises’ solution
Welcome to Mobile Radio Solutions Alcatel 9100 BTS Maintenance
After successful completion of this course, you should understand how to :
Identify the main functions of the MBS LMT (BTS Terminal);Handle the Security Blocks (SBL);Manage the alarms and handle the measurement menus;Update the internal data (Remote Inventory);Configure the transmission parameters;Change a replaceable Item (RIT) using the task procedures and analyze the defense reaction.
Switch to notes view!Conventions used in this guide
Where you can get further information
•If you want further information you can refer to the following:
Technical Practices for the specific product
Technical support page on the Alcatel website: http://www.alcatel-lucent.com
Note Provides you with additional information about the topic being discussed. Although this information is not required knowledge, you might find it useful or interesting.
Technical Reference (1) 24.348.98 – Points you to the exact section of Alcatel-Lucent Technical Practices where you can find more information on the topic being discussed.
WarningAlerts you to instances where non-compliance could result in equipment damage or personal injury.
The BTS Terminal software runs under the WINDOWS platform and provides local access to the BTS
It performs local management functions such as :Alarm monitoringEvent monitoringStatesSystem behaviour observationInitiate actionView reports related to actions
The BTS terminal is connected to the BTS via an RS-232 asynchronous link cable into a COM port of the PC to the Man Machine Interface (MMI) of the SUMA Board.
Click on the Start menu of the computer and follow the path :Start / Programs / BTS-Terminal release Bxx / BTS-Terminal
The User Login window is displayed, as shown in the following figure.
Start the BTS TerminalConnect the PC to the SUMA board (from COM1 or COM2 to “BTS Terminal” connector) with the BTS_TE cableLaunch the softwareEnter your user name or group name in the User/Group Name field in the User Login window.Enter your password in the Password field.Enter your log file name in the ’Your log file is’ field.Click on [Logon].
The BTS terminal runs in two modes : “Standalone” and “Online”.
“Standalone” in the status bar indicates that the terminal is not connected to a BTS.“Online” in the status bar indicates that the terminal is connected to a BTS.
Connect/Disconnect BTS Terminal Terminal Toolbar Cascade IndexLog (G1 MKII/G2) Status Bar Tile Using HelpOpen CT Terminal System Information Arrange Icons About Btsw
Close
(G2) Clear Placement
Save
BTS Terminal
Save as
(Evolium BTS)
Recent FileExit
Open log fileOpen log fileCollection
File “Connect/Disconnect” connects/disconnects the terminal to the BTS.“Log” closes the existing log file or opens a new one.“Open” opens an existing log file or the log file collection, when the terminal is in Standalone mode.
The log file collection lists all the existing log files.“Close” closes the log file when the terminal is in Standalone mode.“Save” is only available to save text files. Not available in the case of input and output masks.“Save As ” is only available to save text files. Not available in the case of input and output masks.“Recent File” lists the most recently opened files(s) – if available.“Exit “ closes the BTS Terminal program.
Select, configures the terminal for a connection to aBTS G1 MKII/G2 : BTS Terminal (G1 MKII/G2)BTS G2 : CT Terminal (G2)Alcatel 9100 or Alcatel 9110/9110-E BTS : BTS Terminal (Evolium BTS).
To configure the terminal use this menu :Setting / Terminal
If the terminal is used for the first time, set the characteristics like below :
During the first using you need to set information such as:the appropriate COM Port (COM1, COM2)the Baud rate 115 200 (reduce in case of connection problem)Click on [OK] to activate and store these serial interface settings for both present and future terminal sessions.
(*) : “Save” / ”Save as” :Only available to save text files.Not available in the case of input and output masks
(**) : “Display GPS information”Not always available (depends on hardware configuration)
(***) : Precondition :if the BTS is in online mode commissioning procedures for “Single Sector” and “Single TRE” are available.To perform commissioning for “All Sectors” the BTS has to be offline (no Abis connection) and the BTS software has to be downloaded.After initialization all commissioning tasks are activated.
Please be reminded to fill in the formSelf-Assessment on the Objectivesfor this moduleThe form can be found in the first partof this course documentation
Objective : to be able to identify the main functions of the BTSterminal
An SBL represents an entity of the BSS which is manageable by the O&M, it can be:
an equipment (e.g. RA)a resource (e.g. BTS_TEL)A support resource (e.g. RSL)
One SBL can be carried by several RITsExample: SBL RA
One board can carried several SBLsExample: SBL SUMA board
Here you find the SBLs classified according to domains ( “equipment”, “resource”, “O&M”, and “support resource”) At the OMC-R TMN compliance begins with modeling of Managed Objects: physical boards, logical resources links between physical boards & logical resources.
SBL Type Domains OMC Managed object__________________________________________________________
Unit type (e.g.: “BTS”)Unit number (e.g.: 1…255)SBL type : this is the name of the SBL (e.g.: “TRE”)SBL numberSBL sub number: (represents the number of a SBL which is part of another SBL.)
An SBL is identified by the following parameters :
Unit type : Gives the SBL grouping inside the BSS. The following items are allowed:“BTS”
Unit number : Identifies a unit replicated several times in the same BSS. For instance, a BSS can include up to 255 BTSs. The unit number of the SBL having “BTS” as SBL type is : 1... 255. The unit number of SBL having “BSC” as SBL type is always 1.
SBL type : This is the name of the SBL (e.g.:”BTS” or “BSC”).
SBL number : Identifies a SBL replicated several times in the same BSS.
SBL subnumber : Represents the number of a SBL which is part of another SBL.
An RIT is the smallest physical module that can be replaced in case of fault. (can be a board for example)
An RIT is identified by the following parameters:Unit type – name of the board or moduleUnit numberRackShelfSlot
An RIT is identified by the following parameters which give the location inside the BSS :
Unit type : can be :BSC BTSTC
Unit number : Identifies a unit replicated several times in the same BSS. For instance, a BSS can include up to 255 BTSs: the BTS unit number is 1 ... 255.
Rack : identifies the rack with a rack number
Shelf : identifies the shelf in the rack.
Slot : identifies the slot in the shelf.
An RIT is also identified by an RIT type which defines the RIT function. The RIT type is used by the maintenance personal when replacing a failing unit. An RIT is only replaceable by another RIT which has the same RIT type or by an RIT which has a compatible RIT type.
The object is subject to an operator interventionIt cannot perform its functions
Level of serviceIT (In Traffic)
The object is ready to perform all its functionsThe provided service is acceptable
FIT (Faulty In Traffic)The object is ready to perform its functions in a degraded modeA non fatal error has been detectedThe provided service is acceptable
At the OMC-R, each managed object status is defined according with 4 parameters: OPERATIONAL STATUS - indicates if the Managed Object is operational or not (Enabled / Disabled)AVAILABILITY STATUS - indicates if the Managed Object is partially or fully unavailable through a equipment failure or an failure of a higher or lower instance or is not equipped.
(Degraded / Dependency / Failed / Dependency, Failed / Failed, Offline)ADMINISTRATIVE STATUS - indicates if the Managed Object is operational or not through operator action
(Locked / Unlock)CONTROL STATUS - indicates if the Managed Object is busy
A fatal error has been detectedThe service is unavailableThe provided object has the capability to recover autonomously
FOS (Forced Out of Service)A fatal error has been detectedThe service is unavailableThe provided object does not have the capability to recover autonomously
Configuration managementNEQ (Non EQuipped)WTC (Wait for Traffic Clear)
This state is linked with the WTC timer parameterCorresponding SBL cannot be selected for new transactionsThe traffic still goes on until the WTC timer expires
MSD (Maintenance SeizeD)This state indicates that a test operator action is running on the corresponding SBL
MSD AUTO (Maintenance Seized Autonomously)This state indicates that an action autonomously triggered by the system is running on the corresponding SBL
Disable : It allows to kill the functionality of an SBL
PurposeInhibit the functionality of a target SBL and filters alarmsThe Wait Traffic Clear parameter introduces a delay into the command executionThe traffic may be stopped in a clean way
For the maintenance, it is very important to determine the relationship between the SBL and the RITThe following menu can be used :
Show / SBL Mapping
One SBL is not necessarily associated with one RIT. For example :Several SBLs may correspond to the same RIT(e.g.: SUMA RIT for SBLs with “OMU” or “CLLK” as SBL type).A SBL may correspond to several RITs(e.g.: SBL with “BTS” as SBL type).A SBL may correspond to no RIT(e.g.: SBL with “BTS-O&M” as SBL type).
In this example, OMU1 is unit UT_TR_CLK 39BTS rack ASub rack 2Slot 7
The rule to determine the physical position of a board having its physical address (ex : 39 in this case) is as following :
Physical Address = 16x(Sub rack Number) + Slot Number
For the TWIN TRE it is also possible to determine the relationship between the SBL and the RITIn this case the RIT is called TGT09 (for TWIN TRE in 900MHz band) or TGT18 (for TWIN TRE in 1800MHz band)The following menu can be used :
Show / SBL Mapping
One SBL is not necessarily associated with one RIT. For example :Several SBLs may correspond to the same RIT(e.g.: SUMA RIT for SBLs with “OMU” or “CLLK” as SBL type).A SBL may correspond to several RITs(e.g.: SBL with “BTS” as SBL type).A SBL may correspond to no RIT(e.g.: SBL with “BTS-O&M” as SBL type).
In this example, OMU1 is unit UT_TR_CLK 39BTS rack ASub rack 2Slot 7
The rule to determine the physical position of a board having its physical address (ex : 39 in this case) is as following :
Physical Address = 16x(Sub rack Number) + Slot Number
For TMA settings the following menu can be used :Commissioning / Edit TMA Setting
The new Evolium™ Antenna Network evolution modules (ANCevolution & ANBevolution) provide higher functionality (TMA DC power supply & TMA supervision included).
Please be reminded to fill in the formSelf-Assessment on the Objectivesfor this moduleThe form can be found in the first partof this course documentation
Objective : to be able to handle the Security Blocks (SBL)
To list the active alarms of the BTS, use this menu:Monitoring / Active AlarmsMonitoring / Event Alarm
Details about the selected alarm
message
BTS LMT Alarm Message ParametersDepending on the type of alarm and in which window it is viewed, an alarm message contains all or most of the parameters
listed in this section.Message Identity The identity number given to the alarm message stored in the database.Event Time The time the message was issued at its source or received at the BTS LMT.Classification The characteristics of the alarm, consisting of:
Alarm Class name and number - as shown in the Alarm DictionaryClass 1: CLK AlarmsClass 2: OMU AlarmsClass 3: SW-AN Alarms……..Class 11: BTS-TRANS Alarms
Alarm Type name and number - as shown in the Alarm DictionaryCommunication - a problem with a procedure or process used to convey information from one point to another in the network.Quality of Service - degradation in the quality of service in the network.Processing Error - a software or processing fault.Equipment - an equipment fault.Environmental - a problem in the enclosure containing the equipment.
Alarm Number - dependent on the Alarm Class and Type. See the appropriate dictionary entry for the valid alarm numbers for a particular alarmAlarm Condition - has one of the following values:
begin - alarm on. For fatal failures, the affected SBL changes state to FLT or FOS. For non-fatal failures, the affected SBL changes state to FITend - alarm off. Indicates the successful recovery of the system. The affected SBL may not change state if other alarms related to the SBL are onevent - occurrence of anomaly. No action is required unless it occurs frequently. Event alarms are of short duration and the affected SBL does not change state. The system retry/recovery mechanism has cleared the fault.
Measurement of the Power on the TRECommissioning / Output Power Test
Select the TRE you want to test
Select the Time Slot (TS) you want to test
With this menu the user may trigger the transmission of dummy bursts for a selected TRE. The transmission of such bursts makes possible the measurement of the output Power.Pull-down lists are provided to valid TRE unit numbers, as well as the TRE output power (or rather the additional power attenuation to be applied to the selected TRE).
Please be reminded to fill in the formSelf-Assessment on the Objectivesfor this moduleThe form can be found in the first partof this course documentation
Objective : to be able to manage the Alarms and to handle the Measurement Menus
Following this path : Show / Remote Inventory you will be able only to upload and read the Remote Inventory for the selected module
Select the module
Click on “Upload”for the Remote Inventory
The RI file is already saved in this location
Essentially performed during the commissioning or after replacing an RIT, this operation allows the operator to write information into the EPROM of a specific module.
Following this path : Commissioning / Edit Remote Inventory you will be able to modify some fields from the RI file as shown on the next slide
Select the module
Click on “Upload”for the Remote Inventory
How to update information :1) Menu Commissioning Edit Remote Inventory2) Select the module and click on “ upload ”3) Modify information in the manufacturing part4) Click on “ application part ”5) Modify information in the application part6) Click on “ write back ” to update information in the flash memory
For more details about data to change, refer to :BTS Corrective Maintenance Handbook (in the Sections concerning module replacement),BTS Terminal User Guide,Commissioning Procedure (only available for the commissioning personnel).
Please be reminded to fill in the formSelf-Assessment on the Objectivesfor this moduleThe form can be found in the first partof this course documentation
Objective : to be able to update the internal data with theRemote Inventory
Objective : to be able to configure the TransmissionParameters
Program : 5.1Using the Settings Menu5.2 Setting the Qmux Address5.3Checking the Fault Table5.4Checking the Qmux Status5.5Turning on the loop5.6 Setting the Clock mode5.7 Setting and Checking the Abis mapping
The purpose of this window is to check general information about the MSUM trasmission module and the PCM connections.It is also possible, if necessary, to modify the Qmux address.
The window is used to adjust the free running OCXO frequency according to the Preventive Maintenance Handbook.This frequency should be checked from time to time (normally once per year) for A9110E BTS not synchronised on Abis or other external reference input.
Settings / Transmission / Board Configuration RSL Time Slots
Time Slots for TREs
OML Time Slot
In this window one may check Abis time slots use. It is also possible to modify them but it is not advisable as differences between this settings and BIUA settings in the BSC may impact to the traffic and/or A9110E BTS functioning.Once the Qmux address is correct, the OML auto detection function will detect the correct position for the OML and then all the other time slots position.For the meaning of each field, see the BTS Terminal User Guide
Please be reminded to fill in the formSelf-Assessment on the Objectivesfor this moduleThe form can be found in the first partof this course documentation
Objective : to be able to configure the Transmission Parameters
Objective of exercises 3 to 8 : analyse the Alarm and replace an RIT
Program :
Analyse fault messages using the alarm dictionaryTo replace an RIT using the appropriate BTS task procedureTo check and set the Transmission ConfigurationCheck and set the clock of the BTS
For several days, we have incurred many problems with the 3 FAN units below the sub rack 3 (for a Medi 3 x 1), below the sub rack 1 (for a Mini). We have already replaced these FANs but it is now certain that the problem is due to a common element of these FANs.
Following the controlling procedure in the “BTS Corrective Maintenance Handbook”, change this suspected RIT.
Using the BTS Terminal, the frequency meter and the appropriate cable, perform the clock measurement following the “BTS Corrective Maintenance Handbook” procedure.Calculate the frequency shift (in Hertz) for one step on the DAC (Digital Analogue converter) used in the SUMP and SUMA through the BTS Terminal. This will be helpful to you in the future in order to tune the clock frequency.Using the “BTS Corrective Maintenance Handbook” procedure perform the tuning of the clock.
Reset the Transmission configuration.Check that the Qmux address with BTS Terminal is the same like the one from OMC-RReset the BTSConfirm the transmission settings. What can you notice ?
Objective : Understanding RA SBL numbering (on Medi 3x1)
Check the RA / TRE assignment and physical positions as well as ARFCN / TRE assignment (diagram on next page):Show the HW configuration for RAs (physical positions of ANC/ANY) and for TREs (physical positions and associated sectors).Reset TRE on sector 2 to confirm its physical position.Using the BTS Terminal:
Tune the physical sector p on logical sector 3.Tune the physical sector q on logical sector 2.Reset the OMU
Using the BTS Terminal, identify the impacts and write them down, using figure (2) from next page.Reset TRE on sector 2 to confirm its physical position
Objective : Analyse the automatic reconfiguration of the BCCH
On a sector with at least 2 TREs :Note the radio channel configuration.Perform a “Disable” of the TRE which carries the BCCH.Check the BCCH goes on another TRE (TRE LEDs).Note the new radio channel configuration.Reset the Sector in initial state.
•Objective: Use the Twin TRE module mode in capacity and coverage mode.
Increase the capacity of a BTS with one sector with two TRXs by adding a TWIN TRE module used in capacity modeImprove the radio performances of an existing BTS with one sector with two TRXs by replacing them with two TWIN TRE modules used in coverage mode.
Please be reminded to fill in the formSelf-Assessment on the Objectivesfor this moduleThe form can be found in the first partof this course documentation
Objective : to be able to change a Replaceable Item (RIT) using the Task Procedures and analyse the Defence Reactions
We know that a main element (which normally allows the communication with 8 subscribers) is now in a very bad state :
Using the BTS Terminal find the problem, analyze the situation and find out the position of the physical suspected element.Following the procedure in the “BTS Corrective Maintenance Handbook” replace the RIT.
Preparation :Choose a TRE without BCCH if it’s possibleSwitch OFF then ENABLE a TRE using the breaker in front of the TRE.
Answers :Find it : Monitoring / SBLs States
Monitoring / AlarmsFind at the position :
Click twice on the alarm and the detailed message appears with the indication of the physical position.Or : Show / SBLs Mapping and choose the suspected TRE
Replace the RIT following the procedure in the “BTS Corrective Maintenance Handbook” .
For several days, we have incurred many problems with the 3 FAN units below the sub rack 3 (for a Medi 3 x 1), below the sub rack 1 (for a Mini). We have already replaced these FANs but it is now certain that the problem is due to a common element of these FANs.
Following the controlling procedure in the “BTS Corrective Maintenance Handbook”, change this suspected RIT.
Answer: The RIT to be changed is the FACB Board on the back panel 3 (Medi) or 1 (Mini).
Show / SBLs mapping.Click on RIT, then on FACB A 3 0 (3 means subrack 3 - Medi) or FACB A 1 0 (Mini).Note the corresponding SBL (CCF n) that it will be necessary to disable later.Do the same thing in order to note the TREs that it will be necessary to extract.The “BTS Corrective Maintenance Handbook” procedure will ask you to disable the corresponding RA, so it is necessary to know the RA associated to the TREs of the subrack 3 or 1.To do that:
Using the BTS Terminal, the frequency meter and the appropriate cable, perform the clock measurement following the EVOLIUM BTS Corrective Maintenance Handbook procedure.
Calculate the frequency shift (in hertz) for one step on the DAC (Digital Analogue converter) used in the SUMP/(A) through the BTS Terminal. This will be helpful for you in the future in order to tune the clock frequency.
Using the “BTS Corrective Maintenance Handbook” procedure perform the tuning of the clock.
Set a new value (1000 for example) then click on “Transmit” .Write down the frequency read on the frequency meter connected on clock out on the Connection Area (Top of Rack).Set a new value (3000 for example) then click on “Transmit”.Write down the new frequency.From this two measurements calculate the frequency shift.
Example :1000 2.1666655 Mhz3000 2.1666673 Mhz
1 step is 1.8 Hz/2000=0.9 MhzTo save the new best value in EEPROM when the measurement is OK :Click on "Save New Best Value as Config Best Value", then transmit.
Preparation :Reset the current Transmission Settings from:
Settings/Transmission/Board Configuration.Check with the OMC-R operator that the Qmux address is the same with the one declared at OMC-R site.Reset the BTS.
Answer :After the BTS reset, due to the OML auto-detection feature, the Transmission Configuration should be automatically downloaded by the BTS from the BSC.
Using the BTS Terminal, perform a measurement of the VSWR.Is the result window dynamic ?
Justify .
Answer :
Cmds / SBL management/Disable RA x -> in SBL Module States window should be no VSWR value for RA x
Commissioning /Initialisation/Single Sector -> “Edit Frequencies” window appears and you have to choose the ARFNs
because you are now in “on-line commissioning” status -> still no VSWR value for RA x
Commissioning/VSWR Measurement/Start -> the TRE connected to RA will emit and in “VSWR Measurement /Threshold
Definition” window you will get the “VSWR measurement received” message-> consequently the result for VSWR for RA x should appear in “SBL Module States” window
In VSWR Measurement /Threshold Definition window you press “Stop” -> the result for VSWR for RA x should disappear from “SBL Module States” window -> So you realise the result window is dynamic.
Answer:Check the RA / TRE assignment and physical positions as well as ARFCN / TRE assignment - diagram 1. Show / Logical HW characteristics.
Show -> HW config for RAs (physical positions of ANX/ANY) and for TREs (physical positions and associated sectors).
Reset TRE on sector 2 to confirm its physical position.
Tune the physical sector p on logical sector 3 then tune the physical sector q on logical sector 2
Using the BTS Terminal :
Cmds/Modify HW Configuration
Commissioning/Edit Sector Mapping -> change the sector mapping
Cmds/End Modification of HW Config
Reset the OMU.Using the BTS Terminal, identify the impacts and write them down (2). See next page .Reset TRE on sector 2 to confirm its physical position.