Specifications

Chapter 4 - Operation and Administration Menus and Parameters
BreezeACCESS 4900 169 System Manual
In SUs and AUs with HW Revision B or lower, Burst Mode cannot be activated
when using WEP for data encryption. In units with HW Revision B or lower, the
Burst Mode option will be "blocked" upon trying to enable it when using WEP for
data encryption. This limitation does not apply to units with HW Revision C.
4.2.6.5.9.1 Burst Mode Option
The Burst Mode Option enables or disables the Burst Mode operation.
The default is Enable.
4.2.6.5.9.2 Burst Mode Time Interval
The Burst Mode Time Interval defines the burst size, which is the time in which
data frames are sent immediately without contending for the wireless medium.
The range is 1 to the value of the Maximum Burst Duration defined for the
Sub-Band.
The default is 5 milliseconds or the value of Maximum Burst Duration defined for
the Sub-Band (the lower of the two values).
4.2.6.5.10 Adaptive Modulation
The Adaptive Modulation algorithm enables adapting the modulation level of
transmitted data to the prevailing conditions of the applicable radio link. The
algorithm provides Access Units with simultaneous, adaptive support for multiple
Subscriber Units at different modulation levels, as transmission's modulation
level decisions are made separately for each associated SU.
Link quality fluctuates due to various environmental conditions. Dynamically
switching between the possible modulation levels increases the probability of
using the maximum modulation level suitable for the current radio link quality at
any given moment.
4.2.6.5.10.1 Adaptive Modulation Option
This submenu allows users to enable/disable the Adaptive Modulation Algorithm.
The default selection is Enable.
4.2.6.5.10.2 Adaptive Modulation Algorithm In Use
This submenu allows users to choose between the basic Adaptive Modulation
algorithm and the Statistics-Based Rate Control algorithm.
NOTE
The Burst Mode parameters are not applicable when the Wireless Link Prioritization Option is
enabled.