Draytek VigorAP 906, User Manual, Page: 55 / 171

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To improve this problem, Airtime Fairness is added for VigorAP 906. Airtime Fairness function tries
to assign similar airtime to each station (A/B) by controlling TX traffic. In the following figure, Station
B(11n) has a higher probability to send data packets than Station A(11g). In this way, Station B(fast
rate) gets fair airtime and its speed is not limited by Station A(slow rate).
It is similar to the automatic Bandwidth Limit. The dynamic bandwidth limit of each station depends
on the instant active station number and airtime assignment. Please note that Airtime Fairness of
2.4GHz and 5GHz are independent. But stations of different SSIDs function together because they
all use the same wireless channel. IN SPECIFIC ENVIRONMENTS, this function can reduce the bad
influence of slow wireless devices and improve the overall wireless performance.
Suitable environment:
(1) Many wireless stations.
(2) All stations mainly use download traffic.
(3) The performance bottleneck is the wireless connection.
Available settings are explained as follows:
Item Description
Enable Airtime
Fairness Try to assign similar airtime to each wireless station by controlling TX
traffic.
Airtime Fairness – Click the link to display the following screen of the
airtime fairness note.