Xirrus XR Series, User Manual

Page: 386 / 662

Wireless Access Point
360 Configuring the Wireless AP
RF Power and Sensitivity
For an overview of RF power and cell size settings, please see “Capacity and Cell
Sizes” on page 36 and “Fine Tuning Cell Sizes” on page 37 .
5. Set Cell Size : Cell Size may be set globally for all enabled IAPs to Auto ,
Large, Medium, Small , or Max using the buttons.
6. Auto Cell Period (seconds) : You may set up auto-configuration to run
periodically, readjusting optimal cell sizes for the current conditions.
Enter a number of seconds to specify how often auto-configuration will
run. If you select
None , then auto-configuration of cell sizing will not be
run periodically. You do not need to run Auto Cell often unless there are a
lot of changes in the environment. If the RF environment is changing
often, running Auto Cell every twenty-four hours (86400 seconds) should
be sufficient). The default value is
None .
7. Auto Cell Size Overlap (%) : Enter the percentage of cell overlap that will
be allowed when the AP is determining automatic cell sizes. For 100%
overlap, the power is adjusted such that neighboring APs that hear each
other best will hear each other at -70dB. For 0% overlap, that number is -
90dB. The default value is
50% .
8. Auto Cell Min Cell Size : Use this setting if you wish to set the minimum
cell size that Auto Cell may assign. The values are Default , Large,
Medium, or Small .
9. Auto Cell Min Tx Power (dBm) : Enter the minimum transmit power that
the AP can assign to a radio when adjusting automatic cell sizes. The
default value is
10 .

To use the Auto Cell Size feature, the following additional settings are
required: all IAPs that will use Auto Cell must have
Cell Size set to auto .
See “Procedure for Manually Configuring IAPs” on page 313 .
It is not necessary for RF Monitor Mode to be turned on, and you don’t need
to have any radio set to monitor mode. See
“RF Monitor” on page 358.