User Manual

CWmin: Determines the initial random backoff wait time ("window") for retry of a transmission.
The value specified here in the Minimum Contention Window is the upper limit (in
milliseconds) of a range from which the initial random backoff wait time is determined.
CWmax: Maximum Contention Window. The value specified here in the Maximum Contention
Window is the upper limit (in milliseconds) for the doubling of the random backoff value.
This doubling continues until either the data frame is sent or the Maximum Contention
Window size is reached. Once the Maximum Contention Window size is reached, retries
will continue until a maximum number of retries allowed is reached. Valid values for the
"cwmax" are 1, 3, 7, 15, 31, 63, 127, 255, 511, or 1024. The value for "cwmax" must be
higher than the value for "cwmin".
AIFS The Arbitration Inter-Frame Spacing Number specifies a wait time (in milliseconds) for
data frames
TxOP Limit Transmission Opportunity is an interval of time when a WME AP has the right to initiate
transmissions onto the wireless medium (WM). This value specifies (in milliseconds) the
Transmission Opportunity (TXOP) for AP; that is, the interval of time when the WMM AP
has the right to initiate transmissions on the wireless network.
ACM bit: Admission Control Mandatory, ACM only takes effect on AC_VI and AC_VO. When you do
not click Checkbox, it means that the ACM is controlled by the connecting AP. If you click
Checkbox, it means that the Client is in charge
No ACK policy bit: Acknowledgment Policy, WMM defines two ACK policies: Normal ACK and No ACK. Click
“Checkbox” indicates “No ACK”