WMM Parameters (for advanced users)
AIFs (Arbitrary
Inter-Frame
Space)
Arbitrary Inter-Frame Space is the minimum wait
time interval between the wireless medium
becoming idle and the start of transmission of a
frame over the network.
Cwmin
(Contention
Window
Minimum)
Contention Window Minimum is the minimum
random wait time drawn from this interval or
window for the backoff mechanism on the network.
CwMax
(Contention
Window
Maximum)
Contention Window Maximum is the maximum
random wait time drawn from this interval or
window for the backoff mechanism on the network.
TxOp limit
(Transmit
Opportunity
Limit)
Transmit Opportunity limit specifies the minimum
duration that an end-user device can transmit data
traffic after obtaining a transmit opportunity. TxOp
limit can be used to give data traffic longer and
shorter access.
NoAck (No
Acknowledgeme
nt)
No Acknowledgement provides control of the
reliability of traffic flow. Usually an acknowledge
packet is returned for every packet received,
increasing traffic load and decreasing
performance.
Enabling No Acknowledgement cancels the
acknowledgement. This is useful for data traffic
where speed of transmission is important.
ACM (Admission
Control
Mandatory)
Admission Control Mandatory enables WMM on the
radio interface. When ACM is enabled, associated
clients must complete the WMM admission control
procedure before access.
BE (Best Effort) Parameters for Data0 Best Effort.
Best Effort data traffic has no prioritization and
applications equally share available bandwidth.
BK (Background) Parameters for Data1 Background.
Background data traffic is de-prioritized and is
mostly for backup applications, or background
transfers like backup applications or background
transfers like bulk copies that do not impact
ongoing traffic like Internet downloads.
VI (Video) Parameters for video data traffic.
VO (Voice) Parameters for voice data traffic.