User`s guide

Vigor2110 Series User’s Guide
74
as guard interval, the AP router will choose short guard
interval (increasing the 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.
3
3
.
.
6
6
.
.
6
6
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. Such
function is designed for mobile and cordless phones that support VoIP mostly.
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