Control Channel Setup

Control Channel Setup

Last updated: December 2, 2008

This section is only applicable to GPRS and EGPRS.

User Configurable Associated Control Channel Parameters

Parameter GPIB Command

EGPRS Link Quality Measurement Mode

CALL:MS:LQMMode

Send Packet System Information on PACCH CALL:(PACCH|PACChannel):PSInfo

Periodic PSI List

CALL:(PACCH|PACChannel):PSI:PERiodic:LIST

Packet (P)SI Status Indication Response

CALL:(PACCH|PACChannel):PSINdication:RESPonse

Send encapsulated SI on PACCH

CALL:(PACCH|PACChannel):SI

Periodic (P)SI repetition time

CALL:(PACCH|PACChannel):PSI:PERiodic:TIME

Custom SI List

CALL:(PACCH|PACChannel):SI:CUSTom:SI1|2|3|4|13[:STATe]

CALL:(PACCH|PACChannel):SI:CUSTom:SI2:BIS[:STATe]

CALL:(PACCH|PACChannel):SI:CUSTom:SI2:TER[:STATe]

CALL:(PACCH|PACChannel):SI:CUSTom:SI2:QUATer[:STATe]

Custom PSI List

CALL:(PACCH|PACChannel):PSInfo:CUSTom:PSI1|2|3|5|8|13|14[:STATe]

CALL:(PACCH|PACChannel):PSInfo:CUSTom:PSI3:BIS[:STATe]

CALL:(PACCH|PACChannel):PSInfo:CUSTom:PSI3:QUATer[:STATe]

For the procedure to access the Control Channel Parameters, see How Do I Configure the Control Channel Parameters? .

EGPRS Link Quality Measurement Mode

See the GPIB command description.

Send Packet System Information on PACCH

You can configure the test set to control if and when the Packet Associated Control Channel (PACCH) Packet System Information (PSI) messages are sent.

The GPIB command to set this parameter is CALL:(PACCH|PACChannel):PSInfo .

Periodic PSI List

The Periodic PSI List setting allows you to select the manner that the PSI messages will be transmitted periodically on the PACCH when a packet-switched connection is available. The two manners are:

  • Standard

    In the standard manner, the PSI messages are sent in a fixed interval which is determined by the Periodic (P)SI repetition time , and in the following decision:

    • If PBCCH is not present in the cell, for a PS-only connection transmit PSI13 and for a DTM connection transmit PSI14 on the PACCH.
    • If PBCCH is present in the cell, for a PS-only connection transmit PSI1, and for a DTM connection transmit PSI14 on the PACCH.

    See Packet Broadcast Control Channel (PBCCH) for instructions on how to configure the PBCCH.

  • Custom

    In the custom manner, the PSI messages are sent in a fixed interval which is determined by the Periodic (P)SI repetition time . The test set transmits a customizable set of PSI messages defined by the Custom PSI List on the PACCH. The test sets also transmits a customizable set of encapsulated SI messages defined by the separated Send encapsulated SI on PACCH .

Periodic (P)SI repetition time

The Periodic (P)SI repetition time setting allows you to modify the repetition rate of periodic PSI and/or SI messages which are transmitted on the PACCH when the periodic SI and/or PSI transmission is enabled.

Packet (P)SI Status Indication Response

The Packet (P)SI Status Indication Response setting allows you to modify the behavior of the test set in response to a Packet SI Status Indication or Packet PSI Status Indication message received from the DUT.

  • MS Requested

    The test set response the Packet SI Status Indication or Packet PSI Status Indication message in a manner determined by the message content supplied by the DUT.

  • Custom

    The test set response the Packet SI Status Indication or Packet PSI Status Indication message in the following decision:

    • Transmit a customizable set of PSI messages which are determined by Custom PSI List on the PACCH.
    • Transmit a customizable set of encapsulated SI messages which are determined by Custom SI List within the Packet Serving Cell SI messages on the PACCH.

Send encapsulated SI on PACCH

The Send encapsulated SI on PACCH setting allows you to configure whether the SI messages encapsulated in Packet Serving Cell SI messages are transmitted periodically on the PACCH.

Custom SI List

The Custom SI List Setting allows you to configure a specific set of SI messages to be transmitted on the PACCH. You can enable the transmission of SI 1, SI 2, SI 2bis, SI 2ter, SI 2quater, SI 3, SI 4 or SI 13 by setting the Custom SI List. The customizable set of SI messages will be transmit:

Custom PSI List

The Custom PSI List Setting allows you to configure a specific set of PSI messages to be transmitted on PACCH. You can enable the transmission of PSI 1, PSI 2, PSI 3, SI 3bis, SI 3quater, SI 5, SI 8, SI 13 or SI 14 by setting the Custom PSI List. The customizable set of PSI messages will be transmit:

Operating Considerations

The control channel parameters can be changed in any Operating Mode , however the settings is only applicable when the test set is in Active Cell Operating Mode .

Refer to the 3GPP TS 45.002 Version 6.8.0 Section 6.3 for more details on PSI messages.

Related Topics


How Do I Configure the Control Channel Parameters?

CALL:(PACCH|PACChannel)

Active Cell Operating Mode

CALL[:CELL]:(PBCCH|PBCChannel)[:STATe]