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Queues automatically provide minimum transmission delays for video, voice, multimedia and critical applications.
The values can further be adjusted manually:
Object
CWMin
CWMax
AIFSN
TxOP
with minimum time delay.
Description
Minimum Contention Window (milliseconds): This value is input to the initial random
backoff wait time algorithm for retry of a data frame transmission. The backoff wait time
will be generated between 0 and this value. If the frame is not sent, the random backoff
value is doubled until the value reaches the number defined by CWMax (below).
Valid values are 1,3,7,15,31,63,127,255,511 or 1024.
The CWMin value must be lower than the CWMax value. The contention window
scheme helps to avoid frame collisions and determine priority of frame transmission. A
shorter window has a higher probability (priority) of transmission.
Maximum Contention Window (milliseconds): This value is the upper limit to random
backoff value doubling (see above).
Valid values are 1,3,7,15,31,63,127,255,511 or 1024.
Arbitration Inter-Frame Space (milliseconds): Specifies additional time between when a
channel goes idle and the AP/client sends data frames. Traffic with a lower AIFSN
value has a higher priority.
Transmission Opportunity (milliseconds): The maximum interval of time an AP/client
can transmit. This makes channel access more efficiently prioritized.
A value of 0 means only one frame per transmission.
A greater value effects higher priority.
User Manual of WDAP-1750AC
-57-
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