Service
35
Setting Description
Min
Contention
Window
For each access category, enter the minimum
contention window value. Channel access is
prioritized by assigning smaller contention window
values to a higher priority traffic class. If a channel is
busy or a transmission collides, a node chooses a
random number between 0 and the current
contention window minimum.
Max
Contention
Window
For each access category, enter the maximum
contention window value. The minimum contention
window value is doubled each time a collision occurs
until the maximum is reached. A small contention
window value decreases the access delay but
increases the probability of a collision.
Fixed Slot
Time
For each access category, enter the fixed slot time.
Channel access can be strictly prioritized by
assigning smaller contention window values to a
higher priority traffic class. Traffic in the access
category must wait for this fixed number of slots
after each packet is received before resuming its
random back-off.
Transmit
Opportunity
Limit
Enter the number of microseconds that qualified
transmitters can transmit through the normal
back-off procedure with a set of pending packets.
Larger values allow a client to control the channel
for longer periods of time, allowing it to achieve
higher throughput in this access category at the
expense of longer access times for all access
categories.
Admission
Control
Note: In this release, clients are blocked from using
an access category when they select Enable for
Admission Control. The Admission Control check
boxes control client use of the access categories.
When you enable admission control for an access
category, clients associated to the access point must
complete the WMM admission control procedure
before they can use that access category. However,
access points do not support the admission control
procedure in this release, so clients cannot use the
access category when you enable Admission Control.
default : disable
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