Go to description Go to description

E-DPCCH/E-DPDCH TTI Pattern Selection for Advanced UL

Use this dialog box to set the TTI pattern with either MAIN or ALT (alternate) E-TFCI table selections for each of the 15,330 slots. The flexibility of the software allows the start of a TTI period at any point in the available slots.

The Number of Frames cell in the advanced carrier view determines the length of the waveform. If the configured pattern length exceeds the waveform length, the software ignores the excess pattern slots.

Descriptions

This list enables you to quickly access the different areas of the TTI Pattern Selection dialog box.

Main All

The channel only uses the table identified in the E-TFCI Table Selection cell and the E-TFC Index cell.

User

This selection enables the dialog box editor and allows the user to customize TTI patterns for up to 15,330 slots (1022 frames).

Import

This button loads a user-defined pattern from a selected location. When you select this button, the Open user defined data dialog box appears for navigating to and selecting the desired file. An imported file automatically updates the TTI Pattern area. The software accepts the following file types:

To create a file, enter five parameters per slot: frame number, slot number, power level, state (0 or 1), and the text MAIN or ALT:

For example, to set slots 0 and 3 for frame 0, and slots 2 and 5 for frame 2, use the following format:

0,0,-10 dBm,1,ALT,0,3,-5 dB,1,ALT,2,2,1 dB,1,MAIN,2,5,5 dB,1,ALT

The power unit, and the space between the power value and dB is not required. If desired, place each slot setting on a separate line:

0,0,-10,1,ALT,

0,3,-5,1,ALT,

2,2,1,1,MAIN,

2,5,5,1,ALT

The maximum file size should not exceed the data required to set the maximum number of slots: 15,330, and the number of configured slots cannot exceed the waveform length.

Export

This button saves the current pattern, showing in the TTI Pattern area, to a file. When you select this button, a Save user defined data dialog box appears for navigating to the location where you can save the file. The software saves the user data as one of the following user-selectable file types:

Clear

This button clears the TTI Pattern table and sets MAIN as the selection with the State column left unchecked and the power set to 0.00 dB for all slots..

TTI Pattern

Use this table to manually set the state (on = checked) and power level, and select either MAIN or ALT for each slot.

TTI Pattern Descriptions

Frame

Displays the frame number (0–1021). The frame number increments after every 15 slots.

Slot

Displays the slot number (0–14) for each frame. The slot numbers repeat after every 15 slots. The TTI cell setting determines the number of slots per TTI period.

The software supports a maximum of 15,330 slots. The number of configured slots cannot exceed the waveform length.

State

Manually set the state to either on (checked) or off for a TTI period. A TTI period (3-slots over 2 ms or 15 slots over 10 ms) starts with the first active (on) slot and last for the remaining consecutive slots in the TTI period regardless of whether the remaining TTI slots are on or off. The TTI period uses the settings (State, Power, and MAIN or ALT) of the first slot in the TTI and ignores the settings of the remaining slots that are part of the TTI period. If a slot is not part of a TTI, it is DTX.

Power

Range: -60 to 20 dB

Manually set the power level for each slot. The bursting pattern uses the RMS of the carrier power as the absolute burst amplitude. During the power search the signal source uses the highest amplitudes of the channels (slot power + channel power) to find the RMS value. When you download the waveform, the software initiates an instrument power search. 

When the waveform resides in an instrument's non-volatile memory and is loaded into volatile memory, manually perform an instrument RMS power search. For more information on performing an instrument power search, refer to the instrument's User Guide. You may also perform the RMS power search. from the software interface. 

MAIN

Sets the slot to use the following cell settings in the E-DPCCH and E-DPDCH views:

Settable

Grayed Out—Information Only

ALT

Sets the slot to use the following alternate cell settings in the E-DPCCH and E-DPDCH views:

Settable

Grayed Out—Information Only

(Located on only the E-DPDCH) 

Tool

Use this table to set up and apply a repeating TTI pattern set to either MAIN or ALT. A TTI period (3-slots over 2 ms) starts with the first active (on) slot and last for three consecutive slots regardless of whether the remaining two slots are on or off. The TTI period uses the settings (State, Power, and MAIN or ALT) of the first slot in the TTI and ignores the settings of the two remaining slots. If a slot is not part of a TTI, it is DTX.

Tool Descriptions

Start

Range: 0 to 15329

Set the starting slot number offset. While the Transmission Pattern table slot numbers (0–14) repeat for each frame, the Start values continuously increments up to the maximum range value. For example, to start the pattern on frame 2, slot 10, set this cell's value to 40. To set slot 5 in frame 8, set the Start value to 125.

This setting accepts values that are smaller or larger than the range values. When the software recognizes a value that is outside of the range, it ignores the value.

Step

Range: 0 to 15329

This cell sets the pattern of transmitted slots by setting the interval of active slots. For example with a value of two, the software sets a repeating pattern for every other slot starting with the slot identified in the Start cell and ending with the number of repetitions identified in the Repeat cell. The number of configured slots cannot exceed the waveform length.

0

The pattern consists of only the slot identified with the starting value and ignores the repeat value

1...15329

The value determines whether the pattern transmits all slots from the Start value to the Repeat value or includes an integer number of DTX slots between each transmitted slot:

  • 1—transmits all slots from the Start value to the Repeat value

  • 2...15329—includes DTX slots

This setting accepts values that are smaller or larger than the range values. When the software recognizes a value that is outside of the range, it ignores the value.

Repeat

Range: 0 to 15330

Sets the end slot number for the pattern. The number of configured slots cannot exceed the waveform length.

0

No slots are set.

1...15330

The value determines the number of configured slots.

  • 1—sets only the slot identified by the Start value.

  • 2...15330—sets the number of slots

If this value is larger than the number of remaining slots from the Start value to the last slot, then all remaining slots are included in the pattern.

Power

Range: -60 to 20 dB

Sets the power level for the slots in the pattern. If needed and after applying the pattern, manually adjust the power level on individual checked slots. The bursting pattern uses the RMS of the carrier power as the absolute burst amplitude. During the power search the signal source uses the highest amplitudes of the channels (slot power + channel power) to find the RMS value. When you download the waveform, the software initiates an instrument power search. 

When the waveform resides in an instruments non-volatile memory and is loaded into volatile memory, manually perform an instrument RMS power search. For more information on performing an instrument power search, refer to the instrument's User Guide. You may also perform the RMS power search. from the software interface.

Fill Pattern

Choice: MAIN or ALT

Sets the pattern to use either MAIN or ALT. After clicking in the cell, a down arrow button appears; click the button to display and make the selection.

Apply Pattern (Button)

Applies the repetition pattern to the TTI Pattern table.

Related Topics

Channel Setup for Advanced Uplink Carrier