Specifications

Minimizing interference
Summit WM Series WLAN Switch and Altitude Access Point Software Version 4.1 Technical Reference Guide
95
If the furthest client moves closer to the AP or roams to another AP, DRM will automatically adjust the
power to provide the best results for the changing environment.
Clients that are continuously moving (WiFi phones for example) require an RF environment that will
adapt quickly to its needs. DRM monitors every client for movement and accurately adjusts power to
support them. This process is done continuously to support all clients whether stationary or moving.
Now consider this deployment for a system of 4 APs deployed in a region where there are only 3 non-
overlapping channels such as America.
Figure 19: Non DRM APs and area of co-channel interference
When APs are deployed to cover an area a minimum average data rate is generally required by the
customer. However, when APs are deployed to ensure this rate everywhere the area covered by then
entire cell must be considered. This is shown above. Since channel 1 is repeated within close proximity
of another channel 1 AP there is no choice but to have an area of co-channel interference. This means
that the area in the middle of the APs is compromised for the users of either channel 1 AP. Depending
on the load level of each AP this area will experience reduced bandwidth due to collisions and other
inefficiencies when sharing channels.