User's Manual

Menus and Parameters
Manual Revision 1.0
4-61
A. Each new frame (first transmission attempt) will be transmitted at a
modulation level selected by the Adaptive Modulation algorithm.
B. If first transmission trial has failed, the frame will be retransmitted
at the same modulation level up to the maximum number of
retransmission attempts defined by the Number of HW Retries
parameter.
C. If the frame was not acknowledged and the Software Retry Support
option is disabled, the frame will be dropped. If the Software Retry
Option is enabled, the frame will be moved to the end of the queue.
All other frames in the queue that are intended to the same
destination will be moved as well, to preserve the original order. This
process is referred to as a Software Retry.
D. The frame will be retransmitted at the modulation level selected by
the algorithm for the new retrials sequence. Each retrial sequence
comprises a number of attempts defined by the Number of HW
Retries.
E. The process will be repeated up to a maximum number of Software
Retries defined by the Number of SW Retries parameter.
The Adaptive Modulation Parameters menu includes the following
parameters:
Adaptive Modulation Option
The Adaptive Modulation Option enables or disables the Adaptive
Modulation decision algorithm. When enabled, the algorithm supports
decrease/increase of transmission’s modulation levels between the
lowest possible level, which is 1, to the value configured for the
Maximum Modulation Level parameter. If the Maximum Modulation
Level is set at 1, which is the lowest possible level, the Adaptive
Modulation algorithm has no effect.
The default selection is Enable.
Software Retry Support
The Software Retry Support option enables or disables the software
retry mechanism in the Adaptive Modulation algorithm. When enabled,
the mechanism supports changes of modulation level in accordance
with the Adaptive Modulation algorithm as described above.
The default selection is Disable.