D-Link DWC-1000 User Manual page 89

Wireless Controller
User Manual
random number generated will be a number between 0 and the number
specified here. If the first random backoff wait time expires before the data
frame is sent, a retry counter is incremen ted and the random backoff value
(window) is doubled. Doubling will continue until the size of the random
backoff value reaches the number defined in the Maximum Contention
Window. cwMax (Maximum Contention Window): The value specified 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. TXOP Limit: Station
EDCA Parameter Only (The TXOP Limit applies only to traffic flowing from
the client station to the access point.) The Transmission Opportunity (TXOP)
is an interval of time when a WME client station has the right to initiate
transmissions onto the wireless medium (WM). This value specifies (in
milliseconds) the Transmission Opportunity (TXOP) for client stations; that
is, the interval of time when a WMM client station has the right to initiate
transmissions on the wireless network.
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