Data (UBS-6, UBS-8, UBS-11)

UBS-6, UBS-8, and UBS-11 are coded channels that are available with Option QFP. Each of the channel types use a different modulation scheme:

To open the Data node, click Data in the tree view. Use the Data window to define the bits in the bursts. The cells displayed in the Data node are determined by the Channel Type, as defined in the Timeslot window, for the selected timeslot.

1. Data (HSR QPSK/16QAM/32QAM Burst)
Tail Bits 1 (nn bits)
Header Data
Data
Training Sequence Bits (nn bits)
Tail Bits 2 (nn bits)
Guard Period (nn bits)(nn bits entry)
E and FBI/TI
2. Control Frame
Data for Control Frame

Change Data Values Button

Data Node Parameters

Use the Data window to define the bits in the bursts. The cells displayed in the Data section are determined by the burst type (Timeslot Type) for the selected timeslot as defined in the Timeslots window. In the window shown above, Timeslot 0 is set up for a data cell with an Uplink level B modulation coding Scheme 6 (UBS-6) burst.

1. Data (HSR QPSK/16QAM/32QAM Burst)

Tail Bits 1 (nn bits)

Click the Details Button

in this cell to open the Closed

Data Source Selection window. Enter the bits to use in the first of the two tail bit segments of the burst.

Import

Click Import to open a dialog box in which you can navigate to and import a pre-defined pattern file. The imported file automatically updates the user data entry area. The software accepts the following file types:

ASCII text
comma separated values (csv)
binary

The maximum file size is 65536 bits. If the imported file is larger than 65536 bits, the software truncates the bits to conform to the maximum file size.

Export

Click Export to open a dialog box in which you can save the current data pattern to a file. You can save the data pattern as one of the following file types:

ASCII text
comma separated values (csv)
binary

Clear

Click Clear to clear all data displayed in the user data entry area.

Insert PN9

Click Insert PN9 to insert a fixed psuedo-random bit sequence (pattern) containing 511 bits (2⁹-1) into the user data entry area. The software generates this fixed pattern in accordance with the CCITT recommendation 0.153. You can click this button repeatedly to add additional PN9 sequences until the maximum file size is reached (65536 bits). If the maximum file size is exceeded, the software truncates the excess data.

To edit the existing data pattern after reaching the maximum file size, insert the cursor at the desired point in the file and press Insert PN9 or use the keyboard 1 and 0 keys. The software inserts the data at the cursor position and truncates data in excess of 65536 bits.

Insert PN15

Click Insert PN15 to insert a fixed pattern psuedo-random bit sequence containing 32,767 bits (2¹⁵-1) into the user data entry area. The software generates this fixed pattern in accordance with the CCITT recommendation O.153.

To edit the data pattern, insert the cursor at the desired point in the file and click Insert PN15, or enter the information manually using the keyboard keys 1 and 0. The software inserts the data at the cursor position and truncates all data in excess of 65536 bits.

Header Data

The "RANDOM" value, refers to being in a given range, or more generally with some statistical distribution. The use of RANDOM Header Data is only used in the Mobile Station measurements. Refer to 3GPP 44.018.

Data

Select an encoded , or . The selected data is coded continuously across the RLC data block per the 3GPP standards. An independent version of the selected data is coded across the unused RLC/MAC header fields.