Specifications

DRM - Dynamic Radio Management
Summit WM20 Technical Reference Guide, Software Version 4.290
to APs, and determine when to roam to a new AP. All of these operations are critical to the operation of
a wireless client.
Figure 11: DRM Standard Power Mode
The diagram in Figure 1 shows clients at different distances from the AP. Both clients measure the signal
strength from the AP using Beacons or Probe Responses. This gives the client and accurate view of the
RF signal quality it can obtain from the AP.
Minimizing interference
Data traffic in a wireless network makes up the majority of transmissions causing interference. A client
associated to an AP that is very close does not need the AP to transmit at full power in order to obtain a
great connection. Reducing power of the data traffic not only provides excellent performance to the
client but also reduces the amount of interference this traffic may cause to other APs.
DRM continuously monitors the position of its clients and dynamically adjusts power to accommodate
the furthest client. In the diagram shown in Figure 2, the transmit power for data frames is raised to
support the client furthest away.
The diagram in Figure 1 shows the inner ring (data frame transmit power) reaching just past the
furthest client. Transmitting at a power level that provides the furthest client with the best service yields
the best overall system performance.
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.