Allied Telesis AT-TQ Series - Manual (Page 141)

AT-TQ Wireless Access Point Series User’s Guide
141
The first random number the access point
generates will be between 0 and this
number.
If the first random backoff wait time
expires before the data frame is sent, a
retry counter is increased and the random
backoff value (window) is doubled.
Doubling continues until the size of the
random backoff value reaches the
number defined in the maximum
contention window.
Valid values for this parameter are: 1, 3, 7,
15, 31, 63, 127, 255, 511, and 1023. This
parameter must be lower than the cwMax
value.
cwMax (Maximum
Contention Window) Specifies the maximum contention
window, which is the upper limit (in
milliseconds) for doubling the random
backoff value. The doubling continues
until either the data frame is sent or the
maximum contention size is reached.
Once the maximum contention window is
reached, retries continue until a maximum
number of retries is reached.
Valid values for this parameter are: 1, 3, 7,
15, 31, 63, 127, 255, 511, and 1023. This
parameter must be higher than the cwMin
value.
TXOP Limit Specifies the Transmission Opportunity
(TXOP) limit. The limit defines the time
interval, in 32 milliseconds periods, that a
WME client has the right to initiate
transmission to the access point. The
TXOP Limit maximum value is 2047.
Table 23. Modify QoS Queue Parameters Window (Continued)
Column Description