TRENDnet GREENnet TEW-639GR, Руководство пользователя, Страница: 20 / 52

20
(Note that WDS security is incompatible with mixed mode, like WPA2PSK mixed,
WEP AUTO and 802.1x, both feature cannot be used at the same time).
Configuring WDS with TEW-639GR
Enable the option for WDS and input the MAC Address of the wireless device that also
supports WDS in to the blank fields. You can add up to four additional devices in the spaces
provided. Click on apply at the bottom of the page, to apply your setting changes.
Enable the security seeing in security page, each WDS APs need to use same security setting.
(Note: WDS supports wireless g/n modes. The use multiple Access Point will reduces the
overall network throughput to ½ the TEW-639GR.
HT Physical Mode
In HT (High Throughput) Physical mode setting allow for control of the 802.11n wireless
environment.
Operating Mode
Mixed Mode
Green Field
Mixed Mode: In this mode packets are transmitted with a preamble compatible with the legacy
802.11a/g, the rest of the packet has a new format. In this mode the receiver shall be able to
decode both the Mixed Mode packets and legacy packets.
Green Field: In this mode high throughput packets are transmitted without a legacy compatible
part.
Channel BandWidth:
Set channel width of wireless radio.
20
20/40
20 Channel Width = 20 MHz
20/40 Channel Width = 20/40 MHz
Guard Interval:
Support Short/Long GI, the purpose of the guard interval is to introduce immunity to
propagation delays, echoes and reflections, to which digital data is normally very sensitive.
Long
Auto
Long Guard Interval, 800 nsec
Short Guard Interval, 400 nsec
MCS:
Fix MCS rate for HT rate.
0-15
The Modulation and Coding Scheme (MCS) is a value that determines the modulation, coding
and number of spatial channels.