146 CHAPTER 6: USING RF PLANNING
7 Review the number of MAPs required for each coverage area, and the
overriding criterion used (coverage or capacity).
8 Click Finish to apply the changes. Icons for the suggested MAP locations
appear on the floor plan.
Assign Channel
Settings
After identifying the MAPs required for a coverage area, you need to
assign channels to the MAPs. Appropriate assignment of channels across
the floor minimizes co-channel interference. The channel assignment
algorithm assigns non-overlapping channels to neighboring APs from the
selected channel set. Choose the starting floor and the ending floor (in
the downward direction) for multi-floor channel assignment. The
algorithm takes predicted RSSI values between neighboring MAPs
(including MAPs on different floors and 3rd party APs) and minimizes
same-channel assignments between APs. You can specify cross-floor
attenuation and the 802.11 technology on which you want to perform
the channel assignment. 3WXM uses predicted RSSI values for the
imaginary “ray” that is drawn between two MAPs. Consequently, you
may see unexpected results if the exact path between the MAPs has
many obstacles, but the areas around that path are relatively open. You
can make further manual adjustments, if necessary.
