F3B3X Series Router User Manual
Xiamen Four-Faith Communication Technology Co.,Ltd.
Page 42 of 94
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EDCA AP Parameters (AP to Client):
This affects traffic flowing from the access point to the
client station
。
EDCA STA Parameters (Client to AP)
:
T
his affects traffic flowing from the client station to the
access point.
Background:
Priority is low.
High throughput. Bulk data that requires maximum throughput and is not time-sensitive is sent to
this queue (FTP data, for example).
Best Effort:
Priority is Medium.
Medium throughput and delay. Most traditional IP data is sent to this queue
.
Video
：
Priority is High.
Minimum delay. Time-sensitive video data is automatically sent to this queue.
voice
：
Priority is High.
Time-sensitive data like VoIP and streaming media are automatically sent to this queue.
CWmin
:
Minimum Contention Window. This parameter is input to the algorithm that 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.
The first 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
incremented 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. Valid values for the "cwmin" are 1, 3, 7, 15, 31, 63, 127, 255, 511, or 1024. The value for
"cwmin" must be lower than the value for "CWmax".
Cmax
：
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".
AIFSN
：
The Arbitration Inter-Frame Spacing Number specifies a wait time (in milliseconds) for
data frames.
TXOP(b)/ TXOP(a/g)
：
Transmission Opportunity for "a" "b" and "g" modes 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.
3.3.2.5
WDS
WDS (Wireless Distribution System) is a Wireless Access Point mode that enables wireless
bridging in which WDS APs communicate only with each other only (without allowing for
