Step 2: Configure Test Set and Mobile Station Parameters

Step 2: Configure Test Set and Mobile Station Parameters

Last updated: December 4, 2008

This step explains how to:

   
NOTE
Many of the parameters configured below are being configured to their default values. In a manufacturing environment it may be desirable to explicitly configure these parameters to ensure that the required settings have not been changed by someone setting a parameter's value through the test set's front panel. However, greater code efficiency can be achieved by not configuring them.
   

Many of the parameters configured below are being configured to their default values. In a manufacturing environment it may be desirable to explicitly configure these parameters to ensure that the required settings have not been changed by someone setting a parameter's value through the test set's front panel. However, greater code efficiency can be achieved by not configuring them.

Configure the Broadcast Channel Parameters

The example below illustrates how to set up the broadcast channel parameters.

You must deactivate the cell, as shown in line 520 below, before setting the network parameters in line 540. If you do not deactivate the cell, the test set generates the following error:

GSM/GPRS operation rejected; Attempting to set <MCC|MNC|LAC|NCC|BCC|RAC> while generating a BCH. 

 
480   ! Configure BCH parameters
490   OUTPUT Test_set;"CALL:BAND PGSM"! Set active broadcast band.
500   ! Deactivate cell to set network parameters by setting the
510   ! operating mode to Cell Off.
520   OUTPUT Test_set;"CALL:OPER:MODE OFF"!
530   ! Set BCH parameters
540   OUTPUT Test_set;"CALL:MCC 1;LAC 1;MNC 1;NCC 1;BCC 5"
550   !
560   OUTPUT Test_set;"CALL:OPER:MODE CELL"! Reactivate the cell.
570   OUTPUT Test_set;"CALL:FUNC:CONN:TYPE AUTO"! Set connection type
580   OUTPUT Test_set;"CALL:BCH 32"
590   OUTPUT Test_set;"CALL:POW -70"! Set cell power to -70 dBm and
600                                 ! cell power state to ON with
610                                 ! a complex command.

Configure GSM Parameters

The following example illustrates setting GSM traffic channel parameters. Refer to Configuring the Traffic Channel (TCH) Parameters and Configuring Mobile Station Operating Parameters for other traffic channel and mobile station operating parameters you can configure.

 
630   ! Configure GSM parameters
640   OUTPUT Test_set;"CALL:TCH 5;:CALL:MS:TXL 0;TADV 0"

Configure GPRS Parameters

In the next example, several packet data traffic channel parameters are specified. Note that the PDTCH ARFCN is set to 45. This is on a different ARFCN than the broadcast channel (20 is the default broadcast channel ARFCN for PGSM), allowing the use of the power reduction levels specified and assigned to the downlink bursts.

 
670   OUTPUT Test_set;"CALL:PDTCH:BAND PGSM"! Set broadcast band
680   OUTPUT Test_set;"CALL:PDTCH 45"! Set packet data traffic channel
690   !
700   !  The following commands are helpful in enabling the test set to
710   !  establish a data connection with mobiles which cannot establish
720   !  a BLER data connection under default conditions.
730   !
740   !  Set the test set to send an invalid FCS to the mobile
750   OUTPUT Test_set;"CALL:FUNC:DATA:BLER:LLC:FCS CORR"!
760   !  Set the block polling interval used during BLER connection
770   OUTPUT Test_set;"CALL:FUNC:DATA:BLER:POLL:INT 4"
780!  Set the type of frame numbering scheme used during attach.
790   OUTPUT Test_set;"CALL:FUNC:DATA:FRAM:STAR ABS"
800   !
810   ! Set Multi-slot Configuration to two downlinks and one uplink.
820   OUTPUT Test_set;"CALL:PDTCH:MSL:CONF D2U1"
830   OUTPUT Test_set;"CALL:PDTCH:CSCH CS4"! Set Coding Scheme to CS4
840   !
850   ! Assign values to the power reduction levels
860   OUTPUT Test_set;"CALL:PDTCH:PZER:LEV 25" ! Assign a value to P0
870   OUTPUT Test_set;"CALL:PDTCH:PRED:LEV1 5"! Set PRL1 to 5 dB
880   OUTPUT Test_set;"CALL:PDTCH:PRED:LEV2 11" ! Set PRL2 to 11 dB
890   !
900   ! Assign power levels to the downlink bursts
910   ! Assign Burst 1 a PRL of 5 dB
920   OUTPUT Test_set;"CALL:PDTCH:PRED:BURS1 PRL1"
930   ! Assign Burst 2 a PRL of 11 dB
940   OUTPUT Test_set;"CALL:PDTCH:PRED:BURS2 PRL2"
950   !
960   ! Assign a power level to the uplink burst
970   OUTPUT Test_set;"CALL:PDTCH:MS:TXL:BURS 5"

Configuring the message type used for GPRS handovers

If your phone supports the Packet Timeslot Reconfigure message type, you may want to configure the test set to use this message instead of the Packet Power Control/Timing Advance message for GPRS handovers. If the Packet Timeslot Reconfigure message is used, only one message is necessary to reconfigure both the channel and the power level. Otherwise, two messages must be sent, a Packet Assignment message and a Packet Power Control/Timing Advance message, requiring more test time.

 
990   ! Configure the test set to use the Packet Timeslot Reconfigure
1000  !  message for GPRS handovers instead of the Packet Power Timing
1010  !  Advance message.
1020  OUTPUT Test_set;"CALL:PDTCH:PMES:PPT OFF"
1030  OUTPUT Test_set;"CALL:PDTCH:PMES:PTR ON"