03814

EXERCISE 1 (76)Uppgjord (ven faktaansvarig om annan) - Prepared (also subject responsible if other) Nr - No.EEI/TO John Bermingham 038 14 - LZU 108 625 UenDokansv/Godk - Doc respons/Approved Kontr - Checked Datum - Date Rev File

KI/ERA/LY/UXC 98-06-03 D Bscexd.doc

GSM BSC OPERATION

LIST OF EXERCISES

EXERCISE 1 3NETWORK OVERVIEW 3

EXERCISE 2 7BSC DATA OVERVIEW 7

EXERCISE 3 9CELL DESCRIPTION & CONFIGURATION DATA OVERVIEW 9

EXERCISE 4 13LOCATING DATA OVERVIEW 13

EXERCISE 5 15CELL DEFINITION AND CONFIGURATION 15

EXERCISE 6 21TRI OVERVIEW 21

EXERCISE 7 27G01 TRANSCEIVER GROUP OVERVIEW 27

EXERCISE 8 33G12 TRANSCEIVER GROUP OVERVIEW 33

EXERCISE 9 41TG DEFINITION (G12-MODEL) 41

EXERCISE 10 43FUNCTION CHANGE 43

EXERCISE 11 45CELL TRAFFIC RECORDING 45

EXERCISE 12 47MOBILE TRAFFIC RECORDING 47



EXERCISE 13 51HARDWARE OVERVIEW 51

EXERCISE 14 53CELL DEFINITION AND CONFIGURATION 53

EXERCISE 15 57DEFINITION OF LOCATING DATA 57

EXERCISE 16 59DEFINITION OF TG 59

EXERCISE 17 61FUNCTION CHANGE 61

EXERCISE 18 65CONNECTION OF TRH 65

EXERCISE 19 67CONNECTION OF TRI 67

EXERCISE 20 71DEFINITION OF TG 71

EXERCISE 21 73TRI PRINTOUTS 73



EXERCISE 1

Network Overview

Work order:

The exercise uses OSS.

Get the configuration of the network; verify the node data of the valid area.

Use the Cellular Network Application (CNA). Select MSC:

What is the revision-state of the MSC?

____________________________________________________

____________________________________________________

____________________________________________________

Which BSCs are defined in the MSC?

____________________________________________________

____________________________________________________

____________________________________________________

How many cells are defined in the MSC?

____________________________________________________

____________________________________________________

____________________________________________________



How many of them are inner cells? How many of them are outer cells?

____________________________________________________

____________________________________________________

____________________________________________________

Select BSC:

What is the revision-state of the BSC?

____________________________________________________

____________________________________________________

____________________________________________________

How many sites are defined in the BSC? Verify the sites in the InformationModel Handler.

____________________________________________________

____________________________________________________

____________________________________________________

How many internal cells are defined in the BSC?

____________________________________________________

____________________________________________________

____________________________________________________

How many internal cells are possible in the BSC?

____________________________________________________

____________________________________________________

____________________________________________________



How many external cells are defined in the BSC?

____________________________________________________

____________________________________________________

____________________________________________________

Which cells have subcell structures? Verify the solution using the GraphicalCell Display.

____________________________________________________

____________________________________________________

____________________________________________________

Verify the hierarchical structures in the network:

a) how many cells are in layer 1? (micro-cells)b) how many cells are in layer 2? (normal cells)c) how many cells are in layer 3? (umbrella cells)____________________________________________________

____________________________________________________

____________________________________________________

Verify Your solution using the Graphical Cell Display.



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EXERCISE 2

BSC Data Overview

Work order:


Get the configuration of the network; verify the BSC data of the valid area.

Insert the data of the existing network to the following tables, insert bothnumeric value and unit.

Select a MSC.

How many BSCs are connected to the MSC?

____________________________________________________

____________________________________________________

____________________________________________________



Select BSC_1.

Table 1. BSC Properties

BSC

MSCmaximum number of internal cells

maximum number of neighbour relationbetween internal cells

maximum number of external cells

maximum number of neighbour relationbetween internal cells

Operation typeSystem type

Revision state

Differential Channel Allocationactive / passive

Load sharingactive / passive

Table 2. Supervision Data

BSC

Type of supervision

Channeltypes with active supervisionAlarm class of supervision on SDCCH

Period lengthAlarm class of supervision on TCH

Period length



EXERCISE 3

Cell Description & Configuration Data Overview

Work order:


Get the configuration of the network; verify the cell data of the valid area.

Check data of one internal cell.

Get as many data as possible of one external cell; mark non-availableparameters with N.A

Insert the data of the existing network to the following tables; insert bothnumeric value and unit.

Table 1. Site Data

Cell name

MSCBSCSITE

LongitudeLatidude

Transceiver GroupChannel group

Cell stateConfiguration result

Antenna type



Table 2. Cell Description Data

Cell nameLocation area code

Cell identityBCCH-frequency

BCCHTYPEBSIC

AGBLKMFRMS

FNOFFSETMeasurement frequencies

inidle modeMeasurement frequencies

in busy modeCell Load Sharing

active / passiveDifferential Channel

Allocation active / passive

Table 3. Cell Configuration Data

Cell Name

SDCCH on timeslot:Frequencies used

Frequency hopping usedyes / no

Different. channe. alloc.active / passive

BTS power controlactive / passive

MS power controlactive / passiveavailable TCHs



Table 4. System Information

Cell nameCell barred

Cell barring qualifierallowed access classes

DTX uplink usedACCMIN

CCHPWRCell reselect hyster.

Type ofLocation Update

T3212MAXRET

TXpermitted NCC

Sys. Info. distrib.type 1 / 7 / 8

Depending on the configuration of Your system, not all columns might beused in the following tables.

Table 5. Cell Neighbour Relation Cell 1

Neighbour

co-sited

candidatetype

direction ofrelation



Table 6. Cell Neighbour Relation Cell 2

Neighbour:

co-sited

candidatetype

direction ofrelation

Do the neighbour relation correspond to the BA-list? (MBCCHNO)Are cosited cells defined properly?

Table 7. Supervision Data

Cell

Logical Channel Availabilityactive

Alarm Class onBCCH / CBCH / SDCCH / TCH

_ _ _ /_ _ _ / _ _ _ / _ _ _

Limit value onBCCH / CBCH / SDCCH / TCH

_ _ _ /_ _ _ / _ _ _ / _ _ _

Seizure Supervision activeon SDCCH / TCH

With Supervision Data, select the internal cell only:



EXERCISE 4

Locating Data Overview

Work order:


Get the Locating Data of the BSC.

Get the Locating data of 1 internal cell.

Get as many data of 1 external cell as possible

Make sure that both cells are of the same system type (i.e. GSM900,DCS1800 or PCS1900). For the BSC Locating data, select the system of thechosen cells.

Insert both numeric value and unit.

Table 1. BSC Locating Data

System selectedaveraging period of timing advance

handover rejection time after initiationafter allocation

after urgency handoverlocating procedure used according to

Ericsson / GSMassignment to other cell allowed

yes / noBSC Locating Data



Table 2. Cell Locating Data

Cell namesystem type

outputpower on BCCH-carrieroutputpower on other carriers

minimum received levelon MS side

minimum received levelon BTS side

sufficient level on MS sidesufficient level on BTS side

handover on SDCCHyes / no

Assignment to worseyes / no

Intracell handoveryes / no

maximum timing advancebefore disconnect

maximum timing advancebefore handover

consecutively missing SACCH-messages on uplink before

disconnectCell quality is expected to be

high / low



EXERCISE 5

Cell Definition and Configuration

Work order:


Define and configure the internal cells DXB001A and DXB002A and theexternal cell HXB001A in BSC_1; HXB001A is an internal cell in BSC_2.

If no data is given for a specific parameter (empty field), select areasonable value.

If a parameter is not in the list, use the default value.

Read the Notes !

Follow the user instructions !

Create a planned area pl_group_1.

Create a fallback area fb_group_1.

Part 1:

Insert the three cells DXB001A, DXB002A and HXB001A to the existingnetwork (planned area); the cells DXB001A and DXB002A are internalcells, HXB001A is an external cell.

Make sure that all cells are defined properly in the MSC as inner cells.

For creation of the cell DXB002A, copy the data from DXB001A andchange data if neccessary (e.g. Cell Identity or ARFCN)

Use the data as listed in the following tables:



Table 1. Site Data

DXB001A DX002A HXB001A

MSC MSC_1 MSC_1 MSC_1BSC BSC_1 BSC_1 BSC_2SITE DXB001 DXB002 HXB001

Longitude E 50 50 00 E 51 50 00 -Latidude N 00 00 00 N 02 00 00 -

Transceiver Group RXOTG-0 RXOTG-1 -

Table 2. Cell Description Data

DXB001A DXB002A HXB001A

CGI 262-02-1-1 262-02-1-2 262-02-2-1BCCHNO 50 60 70

BCCHTYPE normal COMB -BSIC 75 75 76

AGBLK 1 1 -MFRMS 3 3 -

MBCCHNOidle

busy60 70

6050 70

50

-



Table 3. Cell Configuration Data


BSPWRB 37 dBm 37 dBm -BSPWRT 37 dBm 37 dBm -

MSTXPWR 35 dBm 35 dBm 33DCHNO 55 - -SDCCH 1 SDCCH/8 SDCCH/4 -

TS used forSDCCH

1 0 -

level in hierarchy 2 2 2

Table 4. System Information


CCHPWR 33 dBm -ACCMIN - 104 dBm -

CRH 4 dB -DTX uplink yes yes -

permitted NCC 7 -cell barred no no -

allowed acc. classes all all -period for

periodic registration60 minutes 60 minutes -

ATT yes yes -maximum re-transmissions

3 -

TX_integer 7 -DTX downlink no -

Radio Link Timeout 5 SACCH -

Idle Channel Measurement is not used.



Table 5. Cell Locating Data


BSPWR 41 dBm 41 dBm 37 dBmBSTXPWR 41 dBm 41 dBm 37 dBmBSRXMIN -104 dBm -104 -104 dBm

BSRXSUFF -93 dBm -93 dBm -93 dBmMSRXMIN -104 dBm -104 dBm -104 dBm

MSRXSUFF -93 dBm -93 dBm -93 dBmMISSNM 5 5 3

Table 6. Penalty Data


PTIMHF 10 10PSSHF 49 dB 49 dB

PTIMBQ 10 10PSSBQ 50 dB 50 dBPTIMTA 10 10PSSTA 50 dB 50 dB

Copy the Penalty Data of cell DXB001A into cell DXB002A.

Table 7. Urgency Data


BER before UrgencyHandover:

uplink / downlink 3.5% / 3.5% 3.5% / 3.5%Timing Advancebefore Urgency

Handover 59 59CELLQ LOW HIGH



Copy the Urgency Data of cell DXB001A into cell DXB002A.

Connect the cell to the Transceiver Group.

Perform a consistency check.

Activate the cell DXB001A.

Load your planned area into a valid area.

Check the configuration result of the cells using MML-commands.

Export the defined data of cell DXB001A to a file network_x using CNAI.

Part 2:

Insert cells DXB001B and DXB001C to the existing network (plannedarea). With the cell DXB001A, they form a 3-sector site.

Import the cell data from file network_x using CNAI.

Change the data where neccessary. Locating Data can be the same,whereas parameters for cell identification and channel numbers must bedifferent. Select reasonable values according to Your choice.

Note:

Use default values for neighbour relations. Check that the parameter CS isset correctly.

No subcell structure is implemented.

No Cell Load Sharing is applied.

No DTX downlink is used.

System Information of type 7 & 8 are not used.

Neither BTS power control nor MS power control is applied.

No frequency hopping is used.

Differential channel allocation is not used

No logical channel availability Supervision is defined in this exercise.



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EXERCISE 6

TRI Overview

Work order:


Get the configuration of the EMG DXB001.

Verify the data of the valid area.

Use BSC BSC_1 .

Note:

Not all questions can be answered using the BCM-tool.

Use MML in the Command Handling tool where necessary.

Find the EMG using the Find-tool. Start searching in BSC_1.

General:

What is the name of the site?

____________________________________________________

____________________________________________________

____________________________________________________

What is the number of the EMG?

____________________________________________________

____________________________________________________

____________________________________________________



What is the number of the CLC?

____________________________________________________

____________________________________________________

____________________________________________________

Which TG is connected?

____________________________________________________

____________________________________________________

____________________________________________________

Signalling Terminal Central (STC):What is the state of the STC?

____________________________________________________

____________________________________________________

____________________________________________________

What RP-address is used? What is the RP-type?

____________________________________________________

____________________________________________________

____________________________________________________

Which type of equipment does the RP control? On which EM?

____________________________________________________

____________________________________________________

____________________________________________________



Control Link Circuit (CLC):What is the state of the CLC?

____________________________________________________

____________________________________________________

____________________________________________________

Which device is used for the CLC? What is its state?

____________________________________________________

____________________________________________________

____________________________________________________

EMRP:

What is the type of EMRP? What is its state?

____________________________________________________

____________________________________________________

____________________________________________________

Which SW-units are loaded to the EMRP? Print the SW-units to paper.

____________________________________________________

____________________________________________________

____________________________________________________



PCM-link / RBLT-Devices:

Which devices are used for an A-bis path? What is their state?

____________________________________________________

____________________________________________________

____________________________________________________

Which RP controls these devices?

____________________________________________________

____________________________________________________

____________________________________________________

What is their SNT? What is the state of the SNT?

____________________________________________________

____________________________________________________

____________________________________________________

Which DIP is used?What is the state of the DIP?

Check the DIP-data.

____________________________________________________

____________________________________________________

____________________________________________________

Which devices can be used for traffic?

____________________________________________________

____________________________________________________

____________________________________________________



Which devices are used for LAPD-signalling?

____________________________________________________

____________________________________________________

____________________________________________________

Which timslot on the PCM-link carries the concentrated LAPD-links?

____________________________________________________

____________________________________________________

____________________________________________________

RILT-Devices / EMRS:

What is the state of the EMRS?

____________________________________________________

____________________________________________________

____________________________________________________

Which RILT-devices are defined?

____________________________________________________

____________________________________________________

____________________________________________________

Which of them are used for traffic?

____________________________________________________

____________________________________________________

____________________________________________________



Determine the semipermanent connection and fill in the following table:

Table 1

Type of board TSLOT1 Type of board TSLOT2 name

Which path is used for TRX-connection?

____________________________________________________

____________________________________________________

____________________________________________________

Find out the concentration factor of the links.

____________________________________________________

____________________________________________________

____________________________________________________

Which path is used for cascading?

____________________________________________________

____________________________________________________

____________________________________________________

Prepare a drawing of the TRI-structure and Insert Your result to the picture.



EXERCISE 7

G01 Transceiver Group Overview

Work order:


Get the configuration of the Transceiver Group RXETG-0 and RXETG-1.


Use BSC BSC_1 .

MO TG:


Site:

RXETG-0:__________________________________________

RXETG-1:__________________________________________

Which software is used in th TGs?

RXETG-0: _________________________________________

RXETG-1: _________________________________________

Name the Managed Objects which carry a controlling function in the TGs:____________________________________________________

____________________________________________________

____________________________________________________



Which MO carries the active and which carries the standby TGC?

within RXETG-0: ____________________________________

within RXETG-1: ____________________________________

What is their address in LAPD?

RXETG-0: _________________________________________

RXETG-1: _________________________________________

What is the global state of the MO TG?

RXETG-0: _________________________________________

RXETG-0: _________________________________________

MO TRX:

Now consider MOs in RXETG-0 only.

____________________________________________________

____________________________________________________

____________________________________________________

How many TRXs exist in RXETG-0? Which TEIs are used for addressing?

____________________________________________________

____________________________________________________

____________________________________________________



What is the site-name?

____________________________________________________

____________________________________________________

____________________________________________________

Which cells are connected to the TRX?

____________________________________________________

____________________________________________________

____________________________________________________

Which devices are used for the A-bis path?

RXETRX-0-0: ______________________________________

RXETRX-0-1: ______________________________________

Which Software version is active? Is it the same as defined in the TG?

____________________________________________________

____________________________________________________

____________________________________________________

What is the global state of the TRX s?

____________________________________________________

____________________________________________________

____________________________________________________



Which TRAU-devices are connected?

____________________________________________________

____________________________________________________

____________________________________________________

Which TRH-devices are connected?

____________________________________________________

____________________________________________________

____________________________________________________

MO TF:

What is the global state of the TF?

____________________________________________________

____________________________________________________

____________________________________________________

MO TX:

What is the global state of the TXs?

____________________________________________________

____________________________________________________

____________________________________________________

Which cells are connected?

____________________________________________________

____________________________________________________

____________________________________________________



What is the maximum allowed power?

Does it match the power in Cell Configuration Data?

____________________________________________________

____________________________________________________

____________________________________________________

MO RX:

What is the global state of the RXs?

____________________________________________________

____________________________________________________

____________________________________________________

Is receiver diversity used?

____________________________________________________

____________________________________________________

____________________________________________________

MO TS:

Get the number of active timeslots:

____________________________________________________

____________________________________________________

____________________________________________________



Are there any blocked timeslots?

If Yes which ones? Which cells are affected?

____________________________________________________

____________________________________________________

____________________________________________________



EXERCISE 8

G12 Transceiver Group Overview

Work order:


Get the configuration of the Transceiver Group RXOTG-0 and RXOTG-1using the BTS Configuration Manager.


Use BSC BSC_1 .

MO TG:


Site:

RXOTG-0: _________________________________________

RXOTG-1: _________________________________________

Which software is used in th TGs? Indicate the active and the replacementsoftware.

____________________________________________________

____________________________________________________

____________________________________________________



Name the SW revision state. Use the BTS Software Manager if neccessary.

active SW: Rev.: replacem. SW: Rev.:

RXOTG-0: _________________________________________

RXOTG-1: _________________________________________

Name the Managed Objects which carry a controlling function in the TGs: RXOTG-0: _________________________________________

RXOTG-1: _________________________________________

What is their address in LAPD?

RXOTG-0: _________________________________________

RXOTG-1: _________________________________________

What is the global state of the MO TG?

RXOTG-0: _________________________________________

RXOTG-1: _________________________________________



Now consider MOs in RXOTG-0 only.

MO TF:

What is the global state of the TF?

____________________________________________________

____________________________________________________

____________________________________________________

MO TRX:

How many TRXs exist in RXOTG-0? Which TEIs are used for addressing?

____________________________________________________

____________________________________________________

____________________________________________________

What is the site-name?

____________________________________________________

____________________________________________________

____________________________________________________

Which cell is connected to the TRX?

____________________________________________________

____________________________________________________

____________________________________________________



Which Software version is active?

____________________________________________________

____________________________________________________

____________________________________________________

What is the global state of the TRXs?

____________________________________________________

____________________________________________________

____________________________________________________


____________________________________________________

____________________________________________________

____________________________________________________

Which TRH-devices are connected?

____________________________________________________

____________________________________________________

____________________________________________________



For the following question, select the TRX with the BCCH-carrier

MO TX:

What is the global state of the TXs?

____________________________________________________

____________________________________________________

____________________________________________________

Which cells are connected?

____________________________________________________

____________________________________________________

____________________________________________________

What is the maximum allowed power?

Does it match the power in Cell Configuration Data?

____________________________________________________

____________________________________________________

____________________________________________________

MO RX:

What is the global state of the RXs?

____________________________________________________

____________________________________________________

____________________________________________________



Is receiver diversity used?

____________________________________________________

____________________________________________________

____________________________________________________

MO TS:

Get the number of active timeslots within the selected TRX:

____________________________________________________

____________________________________________________

____________________________________________________

Which BPCs are used?

____________________________________________________

____________________________________________________

____________________________________________________

Select TS 3 and trace its connection through the entire system; make use ofthe ssigned BPC.


____________________________________________________

____________________________________________________

____________________________________________________



Which TRH-devices are used?

____________________________________________________

____________________________________________________

____________________________________________________

Which RBLT-devices work as an A-bis path?

____________________________________________________

____________________________________________________

____________________________________________________

Are there any blocked timeslots?

If Yes which ones? Which cells are affected?

____________________________________________________

____________________________________________________

____________________________________________________



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EXERCISE 9

TG Definition (G12-model)

Work order:


Define a new Transceiver Group RXOTG-2.

Start the definition in the planned area.

Connect it to cell DXB001A.

Use BSC BSC_1 .

Before You start:

Check that the site is defined in the Information Model Handler.

Check that the cell to be connected is properly defined in both MSC andBSC.

Check that the DIP is defined and the RBLT-devices for the A-bis path arein idle-state.

Check that the right software-version is available in the BTS SoftwareManager.

Perform an adjustment.

The BTS shall be operated using the following data:

the software release is G12R61

the TG shall be connected to 3 cells (DXB001A, DXB001B, DXB001C) the TG shall have one carrier per cell

filtercombiners are not available

adapt the type of frequency hopping to the type of combiner

maximum power to be used is 41 dBm



assign names to the antennas according to their direction

apply Receiver Diversity.

The Managed Objects must be marked with Your initials or the name of Yourteam; the marks must be global marks.

Collect the hardware information (RU data) from the installation team(here: the trainer) and enter these data using the BTS Hardware Manager.

Create a data transcript and load the data into the BSC.

Connect the TG to the cells.

Activate the cells.

Check the configuration result.



EXERCISE 10

Function Change

Work order:


Perform a function change in the RBS2000

Use the BTS Software Manager

Follow the User Instruction !

Before You start:

Check the present software in all MOs carrying software

Make sure that all MOs subordinate to the TG have the software-version tobe loaded or DEFAULT as a replacement software.

Check the configuration and state of the MOs.

The connected cell must be on air.

Make sure that the Size Alteration are correctly set for the block RXOFT(NI > 12000 for SAE=538)

Check that the new software is available in the OSS.

The following files must be present:

G12R61-Header

G12R61-LF1

G12R61-LF2

G12R61-LF3



Create a delayed job for the download and start the job. The functionchange shall be performed as a conditional load.

Observe the job status.Verify the job execution in the job report.Check the download result using the BTS Configuration Manager.

What is the global state of the Control Function (RXOCF) during the processof loading?

____________________________________________________

____________________________________________________

____________________________________________________

What is the state of the timeslots during the process of loading?

____________________________________________________

____________________________________________________

____________________________________________________

What is the cell configuration result during the process of loading?

____________________________________________________

____________________________________________________

____________________________________________________

Make sure that all MOs are in working state afterwards. Perform anadjustment in the end.



EXERCISE 11

Cell Traffic Recording

Work order:


Initiate a Cell Traffic Recording on the cell DXB001A.

Use the PMR tool.


Before You start:

Check that the CTR-File is properly defined on the IOG.

Check that the cell DXB001A and its neighbours are on air.

Recording Parameters:

Object to be measured: cell DXB001Aduration of recording 30 minutes

events to be recorded: Call Setup

Handover

Disconnect

delivery of measurements: yes

Now perform several test calls.

Present the general information of the report.

Present the event statistics.

Present the events in relation to the signal strength and bit error rate forboth the serving cell and the neighbouring cells.

Present all events of type Handover.



Which case of handovers occured? (e.g.: better cell, urgency, intra-cell,subcell change, etc)____________________________________________________

____________________________________________________

____________________________________________________

What had been the reason of the handovers?

____________________________________________________

____________________________________________________

____________________________________________________

Which is the level of signal strength (RX_LEV) and bit error rate(RX_QUAL)when the handover is performed?____________________________________________________

____________________________________________________

____________________________________________________

Present all events of type Disconnect.

What could be the reason for the Disconnects?

____________________________________________________

____________________________________________________

____________________________________________________

Which is the level of signal strength (RX_LEV) and bit error rate (RX_QUAL)when the call is disconnected?

____________________________________________________

____________________________________________________

____________________________________________________

Export the recording result to the file cell_x.



EXERCISE 12

Mobile Traffic Recording

Work order:


Initiate a Mobile Traffic Recording on a given IMSI.

Use the PMR tool.


Before You start:

Check that the MTR-File is properly defined on the IOG.

Recording Parameters:

Object to be measured: IMSI =duration of recording 30 minutes

events to be recorded: all events related to calls

delivery of measurements: yes

Now perform several test calls.

Present the general information of the report.

Present the graph of the signal strength and bit error rate during the entirecall.



Present all events of type Handover.

Which case of handovers occured? (e.g.: better cell, urgency, intra-cell,subcell change, etc)____________________________________________________

____________________________________________________

____________________________________________________

What had been the reason of the handovers?

____________________________________________________

____________________________________________________

____________________________________________________

Which is the level of signal strength (RX_LEV) and bit error rate (RX_QUAL)when the handover is performed?

____________________________________________________

____________________________________________________

____________________________________________________

Try to find the reason of the call termination.

Was the disconnection a normal or a not expected disconnection?

____________________________________________________

____________________________________________________

____________________________________________________



In case the event cause of the call termination is not expected or notnormal, what could have been the reason?

____________________________________________________

____________________________________________________

____________________________________________________

Consider the level of signal strength (RX_LEV) and bit error rate (RX_QUAL)when the call is disconnected .

____________________________________________________

____________________________________________________

____________________________________________________

Export the recording result to the file IMSI_x.



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EXERCISE 13

Hardware Overview

Work order:


Get the hardware configuration of the Transceiver Group RXOTG-0.


Use the BTS Hardware Manager.


Site:

RXOTG-0: _________________________________________

RXOTG-1: _________________________________________

Get the data of the hardware.

Which are the RUs in the site?

Prepare a complete list and associate them to the controlling ManagedObject. Enter the result in the table below:Depending on the hardware configuration, not all columns in the table areused.

Table 1

MO RU 1 RU 2 RU 4 RU 5 RU 6 RU 7 RU 8CF

TRX



Now find detailed information about the DXU, the ECU and one TRU andenter the information in the table:

Table 2

DXU ECU TRULogical identityserial numberrevision state

applied model of MOposition

Export the hardware data to a file TGHW_0_x.



EXERCISE 14

Cell Definition and Configuration

Work order:

The exercise uses FIOL.

Define and configure an internal cell.

Use a command-file !

Read the Notes !

OPI:

BSC, Internal Cells, Define

Parameter Group 1 Group 2 Group 3 Group 4 Group 5Cell GR01A GR02A GR03A GR04A GR05ACell identity 11 12 14 16 18Channel no. 61,71 62,72 63,73 64,74 65,75BCCH carrier 61 62 63 64 65

Table 1

The internal cell belongs to location area one. The network should always beassigned the value two since that is the operators code. The Mobile CountryCode is 262 for Germany.

Other groups cells should be defined as neighbors.

When defining the neighbor relations an offset of 1 dB between all cellsshould be used. The hysteresis shall be set to 2 dB execept for TRHYSTwhich should have the value 1. The cells are not on the same site.

The Colour Code of the network shall be set to seven. The Base StationColour Code should be five for the internal cell.

8 subgroups of SDCCH shall be placed on timeslot 1 of the BCCH-carrier.

Access grant blocks shall be reserved as given by default. For each pagingsubgroup the paging requests shall be sent in time intervals of 470ms.



Initial transmission power shall be set to 35 dBm on both BCCH and TCHcarrier.

The emitted power at the antenna of all Base Stations is 43 dBm on bothBCCH and TCH carrier. The minimum levels of received signal strength shallbe 110 dBm and the sufficient levels shall be 48 dBm. When filtering themeasurement result not more than five values in a sequence shall beinterpolated.

To prevent the Mobile Station from initiating location updatings all the timewhen driving along the border of two location areas the Cell ReselectionHysteresis shall be set to 4. At cell reselection, the old cell shall be treated inthe same way as all other cells. The minimum required signal strength foraccess shall be 106.

When accessing the system, the the maximum power the Mobile Station shalluse is 35 dBm. In "busy"-mode, the mobile shall use 31 dBm as maximum-power.

Mobiles tied to one of the cells should only reselect cells with a NetworkColour Code of seven.

When a Mobile is not able to decode SACCH messages for longer than 7.68sec it should disconnect the call.

Periodic location updating shall be performed every 30 minutes. The systemshall also be informed whenever the Mobile Station turns on/off power.

The cell shall not be barred for access. Mobiles of GSM phase 1 and of GSMphase 2 shall have equal chances to acess the network.

The maximum number of retransmissions of access request by the MobileStation shall be four. The access burst may be spread over seven time slots.

Mobiles assigned to the cell should take measurements on the frequencies ofthe neighbor cells. This means that the Mobile Station after having turned onpower and having assigned itself to this cell, it will start measuring on thesefrequencies only.

Verify that in the entire BSC, all three (K-, L- and M-) algorithms are be used.Connect the cells to a transceiver group.

Activate the cell.

Note:

No subcell structure is implemented.



The BCCH shall have default configuration.

No DTX downlink and uplink is used.

System Information of type 7 & 8 are not used.

Neither BTS power control nor MS power control is applied.

No frequency hopping is used.

Differential channel allocation is not used

No logical channel availability Supervision is defined in this exercise.

The statistics table need not be updated in the exercise

Any other network features not mentioned will not be used.



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EXERCISE 15

Definition of Locating Data

Work order:


Define Locating Data for the cell previously defined.

Within OPI skip all commands previously used (exerc. 1) and the ones forSupervision.

Use a command file !

Read the Notes !

OPI:

BSC Internal Cell Data, Change

BSC, Locating BSC Data, Change

Before You start, study the list of content of the OPI !

The maximum time alignment before disconnection shall be set to 62. If theBTS can not decode SACCH-messages from the mobile for 5.74 seconds,the call must be disconnected.

The limits for urgency condition shall be set as follows:

quality on uplink and downlink shall be better than a BER of 6.4%;

time alignment shall be set to 50 bit periods.

the radio transmission quality is expected to deterioriate rapidly.

After a handover because of bad quality the penalty for the previous cell shallbe set to 63 dBm for a duration of 30 seconds.

After a handover because of too high time alignment the penalty for theprevious cell shall be set to 63 dB for a duration of 15 seconds.

After a handover failure the penalty for the cell that handover to failed shall beset to 63 dBm and last 15 seconds.



The filter data can be used as defined by default.

Signal Strength and Quality shall be evaluated by using weighting functionNo. 4; this function applies for both speech-, data- and signalling channels.

The average for time alignment shall be taken from eight values.

The time before handover is allowed for an initial call shall be set to 3.84 sec.

The minimum time between handover attempts (e.g. between first andsecond when the first one fails) shall be set to 960 ms if the reason forhandover attempt was better cell condition and 4.8 sec if the reason wasurgency condition.

Check that the cell is on the correct hierarchical level; the level shall be 2.

Note:

The following features are not used in this exercise:

assignment to other cell

intra-cell handover

subcell structure

frequency hopping

inter-BSC handover on signalling-channel

Any other network features not mentioned will not be used.



EXERCISE 16

Definition of TG

Work order:


Connect a new Transceiver Group to the BSC

OPI:

Digital Path, Connect

Radio X-ceiver Administration, Managed Object for BTS Logical ModelG12, Connect

Use a command-file!

A new site shall be connected to the BSC which is part of a GSM-network.

The site is of type RBS 2000; the name of the site is dxb003. The model ofManaged Objects is G12.The site shall be connected via a PCM link RBLT0 using the following data:

TS 16 need not be extracted, since there is no TRI.

no CRC is used

the spare-bits are: SBITS=11111

The PCM-link uses devices RBLT-0 to RBLT-31. Select a sufficient number ofdevices for the TG and connect them to the interface switch.

Before you define the Managed Objects, check the prerequisites: the number and the state of TRH-devices

the number and the state of TRAU-devices

the right software stored on harddisk on the IOG



Check which other TGs are already defined (also of other types, e.g. G01)and select the next higher TG-number as an index to the new TG.

The BTS shall be operated using the following data:

the software release is BTSR7

the TG shall be prepared for a cell previously defined

the TG shall have one carrier

adapt the type of frequency hopping to the type of combiner

maximum power to be used is 41 dBm

assign names to the antennas according to their direction

apply Receiver Diversity

use software decice RXODPI-2, for MO DP

Check the result of the definition.

Connect your transceivers to the cell.

Activate the cell.

Switch the RBS into remote-mode.

Check the configuration result of both cell and transceiver group.



EXERCISE 17

Function Change

Work order:


Load new software to the RBS2000

OPI:

Radio X-ceiver Administration Managed Object Function Change, Initiate

Load the software of type XXXX (ask instructor) to the RBS2000.Before You start, do the following:

check the present software in all MOs carrying software

make sure that all MOs subordinate to the TG have the software-version tobe loaded or DEFAULT as a replacement software.

make sure that there are at least 3 Mbyte available in the volume whereYou want to store the new software.

make sure that the Size Alterations are correctly set for the block RXOFT.

Install the software on the IOG to the volume EXCHVOLUME. Create a newfile with the following data:

RLENGTH=512

BLK=16

SIZE=1

EXP=10

FLCASS=CMP

TYPE=SEQ



Load the file from the floppy to the harddisk; check that in the end, all files arepresent.

For optimized file transmission, the SAE for block RXOFT must be two timesthe size for the largest subfile.

The number of simultaneous downloads must not be restricted.

Download the software to the RBS2000.

Check the download result.

What is the cell configuration result during the download? (cmd. RLCRP)____________________________________________________

____________________________________________________

____________________________________________________

What is the global state of the Control Function (RXOCF) during the processof loading?

____________________________________________________

____________________________________________________

____________________________________________________

What is the state of the timeslots?

____________________________________________________

____________________________________________________

____________________________________________________



What is the configuration result?

____________________________________________________

____________________________________________________

____________________________________________________

Make sure that all MOs are in working state afterwards.



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EXERCISE 18

Connection of TRH

Work order:


Define a RPD.

Connect a TRH to the Group Switch.

Take the devices into service.

Use the OPI !

Use a command-file !

Read the notes !

OPI:

RPD EM Connect

Transceiver Handler to Group Switch, connect

The RPD is of type RPD1A.



The software loading table must contain the following software units:

SUNAME: SUID: Rev.:

RPFDR

RDEXR

RHLAPDR

RHSNTR

RMPAGR

RCSCBR

RQUNCR

RQRCQSR

RCLCCHR

Find out how many RHLAPD, RHSNT and RCLCCH individuals you have toconnect to your RPD and calculate the correct number of the individuals.

All software-units run equipment on an EM of its own.

Connect the RHLAPD individuals to EM=0, the RHSNT individuals to EM=1,the RMPAG-individuals to EM=2 etc. Equipment of type RCLCCH must be onEM=6.

The TRH is connected to the Group Switch at an appropiate position. Selectthe correct SNT for connection to the GS, for example, RHSNT-4. Thehardware version is one.

Note:

The command EXDEP is replaced in the BSC by the command RADEP.

TRH Load distribution is not applied in this exercise.



EXERCISE 19

Connection of TRI

Work order:


Define a new Transmission Remote Interface with the name DXB001

OPI:

Transmission Radio Interface, connect

The TRI shall be connected to the BSC via one 2 Mb PCM-link.

On the BSC side this is already defined with the devices

RBLT - 0&&-31

No Drop/Insert Multiplexor is needed as there will be no "Cascade connectedTRI".

The hardware is already installed on site.

The ETC-board in the BSC is installed and defined.

A LAPD-concentrator is not used.

The data needed for the control signalling link to the TRI:

RP controlling the CLC 46

CLC number 0

STC-type (RP) STC2D STR-type STR2C

Signalling device used RBLT-16

Data needed to allocate the TRI "DXB001":



EM-type EMRP3

EM-number 0

SUNAME SUID EQUIPMENT

REPER - -

TEETR - -

EMGFDR - -

RITSR - RITS

RICSR - RICS

RILTR - RILT-0&&-15

TWR - TW-0

EXAL0R "2/CAA117052/1C R1A01" EXAL0-0&&-31

When using Tutorax, first all software has to be loaded in the sequenceEMGFDR - TEETR - REPER - TWR - EXALOR - RITSR - RICSR - RILTRand then the equipment has to be connected starting with TW and externalalarms.

Actually connected HW in the TRI:

RILT-0 ETB

RILT-9 RTT



Data for DIP:

MODE=1

CRC=0

SBITS=11111

Fault and Quality supervision need not to be defined in this exercise



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EXERCISE 20

Definition of TG

Work order:


Connect a new Transceiver Group to the BSC

OPI:

Digital Path, Connect

Radio X-ceiver Administration, Managed Object for BTS Logical ModelG01, Connect

Use a command-file!

Define and configure a new TG in the BSC using the TRI defined earlier andthe data given below.

BTS Software : BTSXXXX

Combiner : Filter combiner

Timing : slave mode

Nominal allowed output power : 40 dBm



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EXERCISE 21

TRI Printouts


TRI

Find out as much information as possible about the TRI and how it isconnected. Use the given printout commands, command description (B11)and printout description (B13).

EXEGP

Get the name of the EMG, type and state of the STR, the number of theControl Signalling Link and the RP controlling the link

EMG=

STRTYPE= State=

Link=

RP=

EXRPP

Find out RP-type and state of the RP controlling the link.

RP-type= State=

EXEMP

Find out EM-number, state and equipment controlled by this RP.

EM= State= EQM=



EXCLP

Find out the state of the CLC and the used device

CLC-State= DEV=

STDEP

Get the state of the device used for the CLC.

State=

RADEP, RADRP

get the SNT, the RP and the EM responsible for this device.

SNT= RP= EM=

NTSTP, NTCOP

Get the state of the SNT and the name of the connected DIP

SNT-state= DIP=

How many devices are supervised by one SNT?

____________________________________________________

____________________________________________________

____________________________________________________

DTSTP

Get the state of the DIP

State=

Back to the TRI:



EXEPP

What EMRP type is connected to the STR and what is its state?

Type= State=

EXEDP

How many software units are loaded in the EMRP and what equipment is itcontrolling?

number of software units=

EQM=

RISTP

What are state and number of the EMRS?

EMRS= State=

STDEP, RILTP

Which RILT devices are connected with which equipment type (EQMTYPE)?RILT: State= Type=

RILT: State= Type=



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03814

Documents

bsc data overview

tri overview

locating data overview

cell definition

hardware overview

definition of tg

definition of locating

eeito john bermingham