Maipu In-Wall AP Series User Manual
Maipu Confidential & Proprietary Information Page 20 of 34
Figure 2-17 The advanced setting interface
(1)
Bandwidth
: can be set to
20MHz
or
40MHz
.
40MHz
here indicates the
coexistence of 20MHz and 40MHz.
(2)
Short GI
: can be set to
Enable
or
Disable
. GI indicates the transmission
interval of the data block. A short GI results in faster transmission rate and
also high probability of error, especially in the multipath effect environment.
(3)
Preamble Type
: can be set to
Long
or
Short
. The 802.11 frame contains
three parts: preamble, header, and payload. When the preamble is short,
the transmission rate is high, but the compatibility may be poor.
(4)
Protection
: can be set to
Enable
or
Disable
. Protection, b/g Protection,
indicates the protection mode of 802.11b. Because the work modes of b, g,
and n are different, the entire network efficiency will be greatly reduced if
the 802.11b protection is enabled.
(5)
Aggregation
: can be set to
Enable
or
Disable
. Combining multiple data
frames as one frame can obviously improve the network efficiency.
In addition, the relationship among the bandwidth, short GI, and Max Tx rate
can be simply explained in the following mode.
--------------------------------
Bandwidth | short GI | Max TX Rate
----------------------------------------------
20 | Enable | 150 Mbps
----------------------------------------------
20 | Disable | 135 (130) Mbps
-----------------------------------------------
40 | Enable | 300 Mbps
----------------------------------------------
40 | Disable | 270 Mbps
2.4.5 Portal Authentication
On the
Portal Auth
interface, you can configure the portal authentication
function of the AP, as shown in Figure 2-18.