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This document describes the commissioning of the Nokia MetroSite GSM 900,
1800 and 1900 Base Station (BTS). The document provides instructions on how
to use the Nokia BTS Manager’s commissioning Wizard. Read carefully NokiaMetroSite BTS Warnings and Cautions before starting the commissioning.
The document contains the following information:
•chapter 2: Nokia BTS Manager
•chapter 3: Commissioning
About this document
•chapter 4: Commissioning Report
•chapter 5: Troubleshooting and Fault Reporting
•chapter 6: Routing Transmission Capacity
Caution
Commissioning measures concerning any Nokia Base Transceiver Station (BTS)
may be performed only by properly trained and authorised personnel.
This chapter gives instructions on how to get started with Nokia BTS Manager. It
is assumed here that the user knows how to use Windows 95 or NT4.0 software.
2.1Starting and exiting the BTS Manager
The installation program of the manager SW creates a Nokia BTS Manager icon
on the desktop and defines its parameters. For more information on the
installation, refer to the Nokia BTS Manager online Help or the instructions on
the Nokia BTS Manager CD-ROM case.
Nokia BTS Manager
Start the BTS Manager as follows:
1.Double-click the BTS Manager icon on the desktop. The Nokia BTS
Manager starts with the Supervise and Alarms windows opened. Also, the
software checks the BTS configuration and displays it in the Supervision
window.
2.Enter the MMI password if MMI password checking is on (this is the case
when you work in Windows 95 environment).
3.Enter the BTS password if BTS password checking is on. The software
continues execution only if the BTS accepts the entered password. You
may enter an invalid password three times before the BTS Manager exits.
You can define different Manager options and communications parameters when
starting to work with the BTS Manager.
Note
The BTS Manager PC must be connected to the BTS in order to make the BTS
password checking possible. If no connection exists, password checking is not
applicable.
To exit the BTS Manager, choose the Exit command on the File menu.
2.2Using Help
The Nokia BTS Manager software has a convenient, context-sensitive online
Help facility for getting information about a task you are going to perform, a
feature you might want to know more about, or a command you may want to use.
To get Help
•press F1
•click the ‘Help’ button on the toolbar
•choose one of the Help menu commands or
•click the Help button in any dialog box.
In the Help Topics window you can see three tabbed pages: Contents, Index and
Find.
Nokia MetroSite Base Station Commissioning
Contents
The Contents page displays a list of topics organized in books by category.
Index
The Index page lists keywords in alphabetical order through which different
topics can be reached.
Find
The Find page provides a full-text search functionality that allows you to search
for any word or phrase in the Help file.
4.Check that you havethe required SiteIDs and transmissioncapacity tables,
or that the correct Site Configuration File (SCF) exists on the PC hard disk.
Note
The Site Configuration File is an unformatted ASCII file which contains site
parameters for several sites under a BSC. The file is created from the NMS/2000
database and it can be retrieved to the Manager PC via a Web server interface to
the NMS/2000 (refer to NMS/2000 documentation). During the commissioning
procedure, the parameters for the selected site are automatically read from the
file.
The file can be modified locally using the SCF Editor, which is delivered on the
Nokia BTS Manager CD-ROM. For details on how to install the editor, refer to
the instructions on the CD-ROM case. For information on how to use the editor,
refer to the application’s online Help.
Note
BTS SW is loaded to the BTS by the manufacturer. There is usually no need to
locally load SW to the BTS during commissioning.
Start the commissioning as follows:
1.Start the Nokia BTS Manager by double-clicking the BTS Manager icon
on the desktop.
2.Enter the MMI and BTS passwords, if required.
3.When the BTS Manager indicates that the BTS is in the ‘BCF
commissioning’ state, choose theWizard command onthe Commissioning
menu.
4.Select the Manual Commissioning option and click Next.
Note
Commissioning can be done only with a non-commissioned BTS. If the BTS is
already commissioned, you need to run the Undo Commissioning procedure first.
5.The configuration data for the site(s) is stored on your PC in a Site
Configuration File (SCF) under a certain pre-defined name. Open the file,
select the site to be commissioned and click Next.
The next time you launch the Commissioning Wizard, this page
automatically displays the Site Configuration File you used in the previous
session.
Note
If the correct site configuration data is not in the SCF or if the SCF file itself is
not available, select the ‘Undefined’ site option and click Next to continue.
Figure 2.Site configuration file and site name list
Note
If the EAC inputs will not be used, just click Next.
6.Check the EAC inputs if they will be used. If the SCF is available and the
EACs are defined in it, the ‘In Use’ information is read from the SCF;
otherwise you have to mark the required EACs as ‘In Use’.
The state of each EAC will change in real time as you test them, e.g. if you
blow some smoke on the smoke detector. Then, the appropriate state
changes from ‘Open’ to ‘Closed’, or vice versa.
After testing the EACs, mark them ‘Checked’. When you have completed
the testing (or checking), click Next.
Note
The Next button remains disabled until you click a check mark in the Checked
box for all inputs that are ‘In Use’.
7.Check the EAC outputs (if they will be used) by changing the EAC states.
If the SCF is available and the EACs are defined in it, the EAC output
information is read from the SCF; otherwise you have to first mark the
required EACs as ‘In use’.
When you have finished the EAC output settings, click the Set Outputs
button to send the information to ther BTS.
After you have completed checking, click Next.
Note
The Next button remains disabled until you click a check mark in the Checked
box for all outputs that are ‘In Use’.
Note
The EAC names and polarities are defined at the BSC.
8.Check that the transmission parameters are correct. If you selected the
<undefined> option on the Site Configuration page, you need to enter the
parameters here, because the information was not available in the Site
Configuration File.
9.Click the Traffic Manager button to open the Traffic Manager dialog box.
The Next button is disabled until you return from the Traffic Manager.
Figure 6.Traffic Manager button
10.Allocate transmission capacity to the BTS with the Traffic Manager (refer
to 3.2) and, when completed, click OK. This will establish a transmission
connection between the BTS and the BSC. (In case the connection fails,
refer to chapter 5, Troubleshooting and fault reporting.)
When you click OK in the Traffic Manager, the Transmission
Configuration page reappears. The Back button is disabled, because the
transmission parameters have already been sent to the BTS. If you need to
change any parameters you have specified prior to this point, you have to
run the Undo Commissioning procedure first and then re-commission the
BTS.
When the Transmission Configuration page reappears, there is a short
delay before the Wizard automatically proceeds to the next page. If the
BTS Test Reporting page does not appear automatically, click Next to
proceed.
Note
When the BTS Test Reporting page appears, there is a slight delay before the
automatic BSC-controlled tests start. If you click the Manual button to open the
TRX Test dialog box and the BSC-controlled tests start, the dialog box closes
automatically.
During the BTS/BSC start-up scenario the BSC checks the BTS SW and if
it is not the correct one, the BSC loads SW to the BTS. This downloading
will take from 5 to 20 minutes depending on the link speed. If no SW
downloading takes place, the process will take about 10seconds. After that
the BSC sends the configuration data to the BTS.
11.When the BCF is in the ‘Supervisory’ state and the TRXs are ready for
testing, the BTS tests are run under the BSC’s control. The BSC runs
automatic tests on the Abis link and on each TRX installed in the BTS.
The TRX test will take about 6 - 7 seconds for one TRX, 15 seconds for 4
TRXs (one radio time slot per each TRXis tested), while the Abis loop test
will takeabout 1 minute 50seconds (all channels ofevery TRX are tested).
Note
If the establishment of the BTS/BSC connection does not succeed, the BTS
remains in the ‘Waiting for LAPD’ state. Then you can click the Manual button
to run local TRX tests. You can also run manual tests after the automatic BSCcontrolled tests are over.
Caution
In order not to interfere the operation of other sites, make sure that an RF
attenuator is connected to every TRX in the BTS before you start local TRX tests.
The BTS starts operating normally after the tests have been performed, if
the TRXs are unlocked at the BSC. The BCCH TRXs’ LEDs are green and
the TCH TRXs’ LEDs are blinking green.
12.Check the test results on the BTS Test Reporting page and click Next.
Note
The test results can be monitored at the BSC. It is also possible to request the
latest test results remotely from the NMS/2000.
14.Type a name for the BTS Commissioning Report in the Save As field.
By default, the Commissioning Report is saved to the
\NOKIAMGR\REPORTS folder. To specify a different path for thereport,
click Browse and navigate to the folder you want.
15.Click Finish. The Commissioning Wizard closes.
Note
If there is a need to route transmission capacity and no cross-connection file is
available to automate the process, the cross-connections have to be created
manually. See chapter 6 for instructions on how to create the cross-connections.
17.Disconnect the BTS Manager PC from the Nokia MetroSite BTS’s LMP
port.
The commissioning parameters arestored in the flash memoryof the MasterTRX
(i.e. TRX1). The Master TRX creates back-up copies of these parameters in the
slave TRXs’ flash memory.
Note
For maintenance purposes, in the case of 1*TRX BTS, make a back-up copy of
the timeslot allocation settings using the Traffic Manager’s export function (refer
to 3.2).
At this point you should check the Alarms window for possible alarms generated
during the commissioning. For alarm descriptions, refer to Nokia MetroSite BTSAlarm Descriptions.
Complete the installation as instructed in Nokia MetroSite Base StationInstallation.
3.2Allocating transmission capacity with Traffic
Manager
The Traffic Manager is a graphical tool that allows you to allocate BTS
transmission capacityindependent of which Nokia MetroSite transmission unit is
used. You need only to define the line interface (e.g. Port 1) and the incoming
timeslot allocation on the Abis according to the transmission plan.
With the FXC E1/T1 Symm transmission unit, the cross-connections are created
automatically after the capacity has been set and approved.
If a Site Configuration File is used for transmission capacity allocation, the Abis
TS Allocation table is filled automatically. You only need to check the
correctness of the capacity allocation.
Figure 9.Traffic Manager for allocating BTS transmission capacity
Note
In the case of 1.5 MB links (T1), the Traffic Manager automatically reduces the
number of timeslot rows in the table to 24.
The capacity to be used is defined by selecting its signal type (TCHs, TRXSIG,
OMUSIG, TRXSIG on TCHs or OMUSIG/TRXSIG1) and by reserving required
time slots and bits.
1.Select the line interface used (Port 1 - Port 16, depending on the
transmission unit).
2.Click the appropriate traffic or signal button.
3.Click in a cell in the Abis timeslot allocation table.
4.Select anoption, e.g. link speed,as required by theSW. (The selections are
different depending on the signal type.) The SW then automatically
reserves the time slots and bits to be used for the selected function.
5.Repeat steps 2 - 4 until all types of necessary BTS signals are marked.
Note
If you want to modify the allocation table at this point, you have to first delete
prior allocations. Click the right mouse button on the cells to be modified and
delete either one signal allocation, all signal allocations of a particular type or
delete all allocations for the selected port.
6.Check thatthe signal timing (either‘Normal’ or ‘Satellite’) iscorrectly set.
7.Click the OK button to send the information to the BTS.
Note
If you want to modify the allocations after you click OK in the Traffic Manager,
you have to first run Undo Commissiong and reset the BCF.
Note
When the link capacity restricts normal signal allocation, you can use the
‘TRXSIG on TCHS’ and combined ‘OMUSIG/ TRXSIG1’ signal types.
The signal types are discussed below in more detail:
OMUSIG
The BTS can have one OMUSIG which allocates 2, 4 or 8 bits in one time slot
depending on the link speed used (16 - 64 kbit/s). If a combined OMU/TRXSIG1
is used, the allocation of the OMUSIG is disabled.
The BTS can have one combined OMUSIG/TRXSIG1 which allocates 2, 4 or 8
bits in one timeslot depending on the link speed used (16 - 64 kbit/s). When a
compressed Abis timeslot allocation is used, the OMUSIG/TRXSIG1 can be
located in TCH/TS0 or TCH/TS0 - TS3 which means that it overlaps the TCHs
which are reserved for a TRX (normally TRX1).
TCHs
The BTS must be allocated at least as many TCHs as there are TRXs installed in
it (1 - 12). Each TCH allocates 2 contiguous time slots (16 bits) for a single TRX
each of which is marked with the TRX number. The TCHs are numbered from 1
to 12 in order of which they are defined.
TRXSIG
The BTS must be allocated at least as manyTRXSIGs as there are TRXs installed
in it (1 - 12). Each TRXSIG can allocate 2, 4 or 8 bits in one time slot depending
on the link speed used (16 - 64 kbit/s). The TRXSIGs are numbered from 1 to 12
in the order they are entered.
TRXSIG on TCHs
The TRXSIGcan be reserved ona traffic channel butthen up to 4traffic channels
are lost. The signal type must always start from the first bit of the channel.
In the case of a failure in the commissioning procedure, an alarm will appear in
the alarm window (refer to the BTS Alarm descriptions document in the SW
release binder). Also, you may check the cause of a failure from the
commissioning report and the diagnostic report.
The commissioning procedure may fail, e.g. when:
•the Abis cables are not properly connected (then the transmission unit LED
is not green)
•thepre-configuration failedat theBSC, e.g. the BCF and TRX objects were
not created
•the oven oscillator has not yet warmed up (then the BCF remains in the
‘Configuring’ state)
•the TRXs are not unlocked at the BSC (then the TRXs do not enter the
‘Supervisory’ state)
•the PCM port is not activated at the BSC.
Before starting to re-commission the BTS, first run the Undo Commissioning
procedure.
All damages,failures or faults must be reported to Nokia usingthe Failure Report
Form provided by the Customer Services (CS).
Routing of transmission capacity can be done in two ways, depending whether
there is a cross-connection file available or not.
If the cross-connection file exists, routing of transmission capacity is automated,
i.e. the Site Configuration File refers to the name of the file and the embedded
node manager opens the file and sends the settings to the transmission unit
without any indication to the user by the SW.
If the cross-connection file required is not available, you have to create the crossconnections manually using the Cross-connections tool (see the section below).
6.1Creating cross-connections manually
Cross-connectionsare createdwith theCross-connections toolin thetransmission
unit manager application.
Cross-connections definehow signals are routedfrom a FXC transmission unit to
another transmission unit. Cross-connections are created into banks which are
either active or inactive. The cross-connections in the active banks are in use,
whereas those in inactive banks can be used for creating or editing crossconnections. The procedure below describes how to create bi-directional crossconnections.
Create bi-directional cross-connections as follows:
1.Start the Cross-connections tool by choosing the Open command on the
Transmission menu in the BTS Manager. The manager application for the
transmission unit is launched and the BTS Manager session terminates.
2.Open the inactive bank page. (The number of the active bank is given
above the cross-connections list view.)
3.Open the Add Cross-Connection dialog box by right-clicking the mouse
and selecting the Add... command. (Another way to open the dialog box is
to choose the Add command on the Cross-connections | Connections
submenu.)
4.Define the following settings according to the cross-connection plan:
•label, i.e. the name of the new cross-connection (max. 80 characters)
•cross-connection type; in this case the type is ‘bi-directional’
•granularity (with nx64k set also its coefficient n)
•cross-connection class
•timeout.
5.Click the Tx1/Rx1 button to open the Termination Point view.
6.In the Interface tree view, select one of the FXC transmission card’s
interfaces, e.g. Interface 1.
Note
In the timeslot table, the earlier reserved timeslots and bits are indicated by grey,
while the selected ones will become yellow.
7.Click a cell in the table to define the start bit of the frame.
8.Click OK. The dialog box is closed.
9.Click the Tx2/Rx2 button to open the Termination Point view.
10.In the Interface tree view, select an interface, e.g. Interface 2.
11.Click a cell in the table to define the start bit of the frame.
12.Click OK. The dialog box is closed.
13.Click Apply in the Add Cross-connection dialog box. All settings are
loaded but the window remains open.
14.Repeat steps 1 - 13 for other types of cross-connections.
15.Activate the bank by selecting the Cross-connections | Banks | Activate
command and click OK.
17.Quit the transmission unit manager. The Nokia BTS Manager starts
automatically.
Editing a bank
Youcan start editing already madesettings inan inactive bank by double-clicking
the particular connection in the cross-connection list view in the Crossconnection window or by selecting the connection and choosing the Edit
command on the pop-up menu (which appears when you right-click the mouse).
Ifyou have activated the bank, you needto copythe cross-connectioninformation
to the inactive bank for editing as active banks cannot be edited. The copy
command also is available in the pop-up menu.