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RACH PDCCH Tx Setting and Config (Advanced LTE-A TDD Downlink)

Select the DCI channel in the Channel Setup node, then click the button in the DCI #10 for Random Access Procedure cell to open the RACH PDCCH Tx Setting window.  

The RACH PDCCH Tx Setting window displays the parameters setting of PDCCH transmitted in each subframe for the random access procedure.

• Use the Import tab to navigate to and import a saved transmission sequence.

• Use the Export tab to save the current transmission sequence to a file.

• Click the Config Tool button to access a drop-down list that enables you to set parameters for all transmissions to the same value.

  

• Click the links in the tables below for parameter descriptions.

Parameter Descriptions

1. DCI Settings

DCI State

Choice: Off | On

Default: On

Double-click or use the drop-down menu to control the operating state of DCI channel.

DCI State is only available to be set when the current component cell is set to be the Primary Cell component carrier. For secondary cell component carriers, this parameter is inactive.

DCI Format

The DCI for a Random Access Procedure uses DCI format 1A.

DCI Data

Display the Data Source of the DCI channel. The data for DCI is auto generated using the PRACH parameter setting in each subframe.

DCI Payload Size (bits)

Display the payload size in bits. Refer to the 3GPP TS 36.212 5.3.3.1 DCI formats for more information.

RNTI

Range: 1 to 65535

Default: 1

Enter a value for the Radio Network Temporary Identifier (RNTI).

2. PDCCH Settings

PDCCH UE Tx Antenna

Choice: UE Port 0 | UE Port 1

Default: UE Port 0

Double-click or use the drop-down menu to set the UE Tx Antenna for the DCI channel.

Search Space

Choice: Common | UE Specific

Default: UE Specific

Double-click or use the drop-down menu to set the search space of the PDCCH channels.

Search Space is only available to be set when the current component cell is set to be the Primary Cell component carrier. For secondary cell component carriers, this parameter is inactive.

See more details about this parameter in the PDCCH Assignment Procedure in 3GPP TS 36.213 9.1.1.

PDCCH Tx Parameter Settings

State

Choice: Off | On

Default: On

Click to turn the DCI state on or off in the selected subframe.

Preamble Index

Choice:0 to 63

Default: 0

Set Preamble Index in the selected subframe.

PRACH Mask Index

Choice: 0 to 15

Default: 15

Set PRACH Mask Index in the selected subframe.

Agg Level

Choice: 1 | 2 | 4 | 8

Default: 1

Select the Aggregation level for the DCI searching space in the selected subframe.

See more details about this parameter in the PDCCH Assignment Procedure in 3GPP TS 36.213 9.1.1.

Candidate

Choice: 0

Default: 0 to maximum

Set the candidate within the searching space in the selected subframe.

See more details about this parameter in the PDCCH Assignment Procedure in 3GPP TS 36.213 9.1.1.

CCE Offset

Display the CCE offset of the DCI in the selected subframe.

See more details about this parameter in the PDCCH Assignment Procedure in 3GPP TS 36.213 9.1.1.