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Menus and Parameters
Operation and Administration
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NOTE
Although the SU selects the Best AU based on long-term conditions prior to the decision time, it
may not always be connected to the instantaneous Best AU at any given time. Note also that the
decision is made only once during the scanning interval. The decision may not remain the optimal
one for ever. If there are significant changes in deployment of neighboring AUs and the SUs served
by them, overall performance may be improved if the applicable SUs are reset intentionally so as to
re-initiate the Best AU decision process.
The Best AU Parameters menu includes the following options:
4.2.6.2.6.1 Best AU Support
The Best AU Support option enables or disables the Best AU selection feature.
The default is Disable.
NOTE
If the Best AU feature is not used, the SU associates with the first AU it finds whose ESSID or
Operator ESSID is identical to its own ESSID.
4.2.6.2.6.2 Number Of Scanning Attempts
When the Best AU option is enabled, the SU gathers information on neighboring
AUs for approximately 2 seconds on each of the scanned frequencies. The
Number of Scanning Attempts parameter defines the number of times that the
process will be repeated for all relevant frequencies. A higher number may result
in a better decision at the cost of an increased scanning time during which the
SU is not operational.
Valid values: 1 - 255.
Default value: 4.
4.2.6.2.6.3 Preferred AU MAC Address
The Preferred AU MAC Address parameter defines a specific AU with which the
SU should associate. Gaining control of the SUs association is a powerful tool in
network management. The Preferred AU MAC Address parameter is intended for
applications where there is a need to dictate the preferred AU with which the SU
should associate. To prevent the SU from associating with the first viable AU it
finds, the Best AU Support mechanism should be enabled. Once the SU has
identified the preferred AU based on its MAC address, it will associate with it and
terminate the scanning process. If the preferred AU is not found, the SU will
associate with an AU according to the decision reached using the best AU
algorithm.
Valid values: A MAC address string.
The default value for the Preferred AU MAC Address is 00-00-00-00-00-00 (12
zeros), meaning that there is no preferred AU.