Configuration
QB.11-R Installation and Management
Interface Parameters
74
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Dynamic Data Rate Selection (DDRS) Status:
Select the
DDRS Status
“Enable” or “Disable” from the drop-down
box provided. When you enable or disable DDRS on the BSU, the BSU sends an announcement to the SUs and the
SUs enable or disable DDRS automatically.
•
DDRS Default Data Rate:
The data rate at which the BSU starts communication with all SUs to begin the registration
process (the default is 6 Mbps). This data rate is configured on the BSU only.
•
DDRS Max Data Rate:
When DDRS is enabled, configure the maximum data rate that can be dynamically set by
DDRS.
•
DDRS Avg SNR Threshold for Data Rate Increase:
This field is displayed only when DDRS is enabled. The current
remote SNR value must be bigger than average remote SNR value by at least this threshold in dB, in order the DDRS
to increase the TX data rate.
•
DDRS Req SNR Threshold for Data Rate Increase:
The average remote SNR value must be bigger than or equal to
the minimum required SNR value for the higher TX data rate by at least this threshold in dB in order for DDRS to
increase the TX data rate to the higher TX data rate.
•
DDRS Avg SNR Threshold for Data Rate Decrease:
The average remote SNR must be less than the minimum
required SNR for the current TX data rate by at least this threshold in dB, in order for DDRS to decrease the TX data
rate.
•
DDRS Inc Percent Threshold:
If the number of retransmissions out of the last 128 transmissions is bigger than this
percentage, DDRS will increase the TX data rate.
•
DDRS Dec Percent Threshold:
If the number of retransmissions out of last 128 transmissions is less than or equal to
this percentage, DDRS will decrease the TX data rate.
Additionally, the BSU screen for countries that require DFS contains the sections described below.