Tsunami MP.11 Installation and Management Model 5012-SUR ...

System Overview Tsunami MP.11 5012-SUR Installation and Management
Dynamic Data Rate Selection (DDRS)
Dynamic Data Rate Selection (DDRS)
NOTE: DDRS is configured on the BSU. See the Tsunami MP.11-R Installation and Management Guide for more
information.
The WORP Dynamic Data Rate Selection (DDRS) lets the BSU and SUs monitor the remote average signal-to-noise
ratio (SNR) and the number of retransmissions between the BSU and SUs and adjust the transmission data rate to an
optimal value to provide the best possible throughput according to the current communication conditions and link quality.
With DDRS enabled, a BSU can maintain different transmission data rates to different SUs, optimizing the data rate
based on the link quality of each SU independently.
Both the BSU and the SUs monitor the remote SNR and number of retransmissions. The BSU monitors these values for
each SU that is registered. An SU monitors these values for the BSU. When necessary, based on this information, the
data rate is dynamically adjusted.
Note that DDRS is enabled or disabled on the BSU only. This operation requires the BSU to be rebooted. After rebooting,
the BSU sends a multicast announcement to all SUs to begin the registration process. During registration, an SU is
informed by the BSU whether DDRS is enabled or disabled and it sets its DDRS status accordingly.
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