3com WX4400 3CRWX440095A User Manual

C

HAPTER

 6: U

SING

 RF P

LANNING

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.

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.