SMC Networks E21011 User Manual page 98

| Wireless Settings
C 8
HAPTER
Quality of Service (QoS)
The following items are displayed on this page:
WMM — Sets the WMM operational mode on the access point. When
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enabled, the parameters for each AC queue will be employed on the
access point and QoS capabilities are advertised to WMM-enabled
clients. (Default: Disabled)
Disable: WMM is disabled.
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Enable: WMM must be supported on any device trying to
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associated with the access point. Devices that do not support this
feature will not be allowed to associate with the access point.
WMM Acknowledge Policy — By default, all wireless data
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transmissions require the sender to wait for an acknowledgement from
the receiver. WMM allows the acknowledgement wait time to be turned
off for each Access Category (AC) 0-3. Although this increases data
throughput, it can also result in a high number of errors when traffic
levels are heavy. (Default: Acknowledge)
Aknowledge — Applies the WMM policy.
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No Aknowledge — Ignores the WMM policy.
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WMM BSS Parameters — These parameters apply to the wireless
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clients.
WMM AP Parameters — These parameters apply to the access point.
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logCWMin (Minimum Contention Window): The initial upper limit of
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the random backoff wait time before wireless medium access can be
attempted. The initial wait time is a random value between zero and
the CWMin value. Specify the CWMin value in the range 0-15
microseconds. Note that the CWMin value must be equal or less
than the CWMax value.
logCWMax (Maximum Contention Window): The maximum upper
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limit of the random backoff wait time before wireless medium
access can be attempted. The contention window is doubled after
each detected collision up to the CWMax value. Specify the CWMax
value in the range 0-15 microseconds. Note that the CWMax value
must be greater or equal to the CWMin value.
AIFSN (Arbitration Inter-Frame Space): The minimum amount of
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wait time before the next data transmission attempt. Specify the
AIFS value in the range 0-15 microseconds.
TXOP Limit (Transmit Opportunity Limit): The maximum time an
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AC transmit queue has access to the wireless medium. When an AC
queue is granted a transmit opportunity, it can transmit data for a
time up to the TxOpLimit. This data bursting greatly improves the
efficiency for high data-rate traffic. Specify a value in the range 0-
65535 microseconds.
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