2. Turn off the low rate connection (feature pending on GWN APs)
When the client is far away from the AP, the data connection rate is reduced by one or several levels, which
causes same data amount will consume a longer period of time, and a higher channel utilization. Forbidding
the low data rate force the wireless client to roam to a nearby reliable access point, so that this wireless
client can communicate in a high data rate, which will reduce the channel utilization when same amount of
data is transmitted.
The data rate determines the expense of the management frame occupied by the beacon. An example of
same amount of data transmission. If the data rate is 1 Mbps, the channel expense is about 3%. If the
data connection rate below 6 Mbps is turned off, and negotiated speed increases to 6 Mbps, the channel
expense reduces to about 0.6%. Furthermore, if the data connection rate below 12 Mbps is turned off,
then expense will be about 0.3%.
3. Access control of clients and applications
High channel utilization also reflects the number of clients and application behavior.
If the client uses P2P software, it may results in a higher channel utilization than browsing simple web
applications. These can be limited by features such as "client speed limit"
4. Adjust the size of AP radio coverage cell
Adjusting the AP's cell size can be achieved by reducing the transmit power of the AP or by forbidding the
low-speed management frame. Reducing the transmission power of APs can reduce the visibility, and
mutual interference between APs, and indirectly reduce the channel utilization for neighbor APs on the
same channel. Another benefit of lowering APs’ transmission power is to balance the uplink and downlink
signal strength. Usually AP’s downlink signal is much stranger than mobile end device’s uplink, and this will
cause a phenomenon that mobile device can hear AP while AP can’t hear mobile device.
Another function of "turning off the low connection rate" mentioned in previous paragraph can also
effectively control the cellular size of the AP. The figure below is an example:
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