Draytek Vigor3200 Series, User Manual

Page: 245 / 319

Vigor3200 Series User’s Guide 235
wireless performance) or long guard interval for data transmit
based on the station capability.
Aggregation MSDU
Aggregation MSDU can
combine frames with different
sizes.
It is used for improving MAC layer’s performance for
some brand’s clients. The default setting is Enable.
4
4
.
.
1
1
2
2
.
.
8
8
W
W
M
M
M
M
C
C
o
o
n
n
f
f
i
i
g
g
u
u
r
r
a
a
t
t
i
i
o
o
n
n
WMM is an abbreviation of Wi-Fi Multimedia. It defines the priority levels for four access
categories derived from 802.1d (prioritization tabs). The categories are designed with specific
types of traffic, voice, video, best effort and low priority data. There are four accessing
categories - AC_BE , AC_BK, AC_VI and AC_VO for WMM.
APSD (automatic power-save delivery) is an enhancement over the power-save mechanisms
supported by Wi-Fi networks. It allows devices to take more time in sleeping state and
consume less power to improve the performance by minimizing transmission latency.
WMM Capable To apply WMM parameters for wireless data transmission,
please click the
Enable radio button.
APSD Capable The default setting is Disable .
Aifsn
It controls how long the client waits for each data transmission.
Please specify the value ranging from 1 to 15. Such parameter
will influence the time delay for WMM accessing categories.
For the service of voice or video image, please set small value
for AC_VI and AC_VO categories For the service of e-mail or
web browsing, please set large value for AC_BE and AC_BK
categories.
CWMin/CWMax CWMin means contention Window-Min and CWMax means
contention Window-Max. Please specify the value ranging from
1 to 15. Be aware that CWMax value must be greater than
CWMin or equals to CWMin value. Both values will influence