Regular Burst# (Downlink)

1. Burst Settings

Modulation and Coding

Select the modulation type, coding type, and coding rate from the drop down menu. The type of coding available depends on the burst profile.

Repetition Coding

Choices: None, 2, 4, 6

Select the number of times the coded or uncoded data is repeated. Repetition coding is only available when QPSK 1/2 or QPSK 3/4 is selected for the burst profile (Rate ID). 

Power Boost

Range: –12 to 9 dB, in 3 dB increments

Double-click or use the drop-down menu to select the desired relative power offset of the burst in dB.

IE in Sub-MAP

Choices: None, Sub-DL-UL-MAP #1, Sub-DL-UL-MAP #2, Sub-DL-UL-MAP #3

Double-click or use the drop-down menu to specify which Sub-DL-UL MAP the MAP IE will be placed. None represents that the MAP IE is placed into the normal or compressed MAP message.

To assign the MAP IE to the specific Sub-DL-UL MAP, the status of the corresponding Sub-DL-UL MAP must be on.

 

STC Type

Double-click or use the drop-down menu to select the STC type, which decides whether this data burst implements Matrix A, Matrix B or None STC encoding.

2. Allocation Setting

When Auto Allocation is on in the zone editing window, an algorithm configures the bursts automatically based on the number of occupied slots and maximum number of subchannels available in the zone, avoiding any burst overlap where possible. If Auto Allocation is off, you can manually position and allocate the data region by editing the number of symbols, subchannels, and their respective offsets.

You can view the automatic or manual Closedburst allocation configurations in the zone plot view. Any bursts that overlap, exceed the number of assigned slots, or are too small are shown in red. Click Status Windowin the tool bar for suggestions to resolve any conflicts.

Number of Symbols

If Auto Allocation is off in the zone editing window, use this cell to select the number of symbols to be used for the burst.

Symbol Offset

If Auto Allocation is off in the zone editing window, use this cell to manually position the burst on the horizontal axis (x), if necessary, to avoid any burst overlap.

Number of Subchannels

If Auto Allocation is off in the zone editing window, use this cell to select the number of subchannels to be used for the burst.

Subchannel Offset

If Auto Allocation is off in the zone editing window, use this cell to manually position the burst on the vertical axis (y), if necessary, to avoid any burst overlap.

Assigned Slots

Displays the total available Closedslots in this burst based on the number of symbols times the number of subchannels selected.

The definition of an OFDMA slot depends on the OFDMA symbol structure, which varies for downlink and uplink:

When Auto Allocation is set to on in the zone editing window, an algorithm configures the bursts automatically using the specified burst parameters, avoiding any burst overlap, if possible. If Auto Allocation is off, you can manually position and allocate the data region by selecting the number of assigned slots for the zone and the number of symbols and subchannels with their respective offsets in the burst editing window. Any bursts that overlap, exceed the assigned number of slots, or are too small are shown in red and the status bar and parameter status window display a conflict message.

Occupied Slots

Displays how many Closedslots are needed for the burst based on the total length in bytes of all MAC PDUs. It also depends on the rate ID and coding type selected for each burst.

The definition of an OFDMA slot depends on the OFDMA symbol structure, which varies for downlink and uplink:

When Auto Allocation is set to on in the zone editing window, an algorithm configures the bursts automatically using the specified burst parameters, avoiding any burst overlap, if possible. If Auto Allocation is off, you can manually position and allocate the data region by selecting the number of assigned slots for the zone and the number of symbols and subchannels with their respective offsets in the burst editing window. Any bursts that overlap, exceed the assigned number of slots, or are too small are shown in red and the status bar and parameter status window display a conflict message.