TRENDnet 12dBi User's Guide - Page 43

Con Wireless Advanced Setting, Site Survey, Wireless -> Site Survey

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TRENDnet User's Guide Configure Wireless Advanced Setting To achieve optimal wireless performance, it is necessary to tweak advance setting per requirements properly, not necessary higher the better or lower. The administrator can change the RTS threshold and fragmentation threshold settings for the system. Please click on Wireless -> Advanced Setup and follow the below setting.  Fragment Threshold : The Fragment Threshold is in the range of 256~2346 byte. The default is 2346 byte. Each Wi-Fi packet can be divided into smaller packets, marked with a sequential fragment number and re-assemble in the receiving ends. The purpose is to make a short frame, instead of long frame, transmitting by radio in a heavy noisy environment. Because of sending smaller frames, corruptions are much less likely to occur. The pros is obvious, the cons is the overhead for transmission. So, in a clean environment, higher fragment threshold can be an option to increase throughput. Fragmentation will be triggered by setting the Fragment Threshold, usually in Bytelength. Only when the frame size is over the Threshold, fragmentation will take place automatically.  RTS Threshold : RTS Threshold is in the range of 1~2347 byte. The default is 2347 byte. The main purpose of enabling RTS by changing RTS threshold is to reduce possible collisions due to hidden wireless clients. RTS in AP will be enabled automatically if the packet size is larger than the Threshold value. By default, RTS is disabled in a normal environment supports non-jumbo frames.  Short Preamble : By default, it's "Auto". To Disable is to use Long 128-bit Preamble © Copyright 2012TRENDnet. All Rights Reserved. TEW-676APBO Synchronization field. The preamble is used to signal "here is a train of data coming" to the receiver. The short preamble provides 72-bit Synchronization field to improve WLAN transmission efficiency with less overhead.  Tx Burst : By default, it's "Enable". To Disable is to deactivate Tx Burst. With TX burst enabled, AP will send many packets in a burst, without collision detection and RTS/CTS for each packet. TX Burst have better throughput but cause interference with other APs in channel.  WMM : By default, it's "Disable". Select Enable, the packets with QoS WMM will have higher priority. Click Save button to save your changes. Click Reboot button to activate your changes. Site Survey Use this tool to scan and locate WISP Access Points and select one to associate with. Please click on Wireless -> Site Survey. Below depicts an example for site survey.  ESSID : Available Extend Service Set ID of surrounding Access Points.  MAC Address : MAC addresses of surrounding Access Points.  Signal : Received signal strength of all found Access Points.  Channel : Channel numbers used by all found Access Points.  Security : Security type by all found Access Points.  Band : Wireless band used by all found Access Points.  Network Type : Network type used by all found Access Points.  Select : Click "Select" to configure settings and associate with chosen AP. 43

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© Copyright 2012TRENDnet. All Rights Reserved.
TRENDnet User’s Guide
TEW-676APBO
43
Configure Wireless Advanced Setting
To achieve optimal wireless performance, it is necessary to tweak advance setting per
requirements properly, not necessary higher the better or lower.
The administrator can change the RTS threshold and fragmentation threshold settings
for the system. Please click on
Wireless -> Advanced Setup
and follow the below setting.
Fragment Threshold :
The Fragment Threshold is in the range of
256
~
2346
byte.
The default is
2346
byte.
Each Wi-Fi packet can be divided into smaller packets, marked with a sequential
fragment number and re-assemble in the receiving ends. The purpose is to make a
short frame, instead of long frame, transmitting by radio in a heavy noisy
environment. Because of sending smaller frames, corruptions are much less likely
to occur. The pros is obvious, the cons is the overhead for transmission. So, in a
clean environment, higher fragment threshold can be an option to increase
throughput.
Fragmentation will be triggered by setting the Fragment Threshold, usually in Byte-
length. Only when the frame size is over the Threshold, fragmentation will take
place automatically.
RTS Threshold :
RTS Threshold is in the range of
1~2347
byte. The default is
2347
byte.
The main purpose of enabling RTS by changing RTS threshold is to reduce possible
collisions due to hidden wireless clients. RTS in AP will be enabled automatically if
the packet size is larger than the Threshold value. By default, RTS is disabled in a
normal environment supports non-jumbo frames.
Short Preamble :
By default, it’s “
Auto
”. To
Disable
is to use Long 128-bit Preamble
Synchronization field.
The preamble is used to signal "here is a train of data coming" to the receiver. The
short preamble provides 72-bit Synchronization field to improve WLAN
transmission efficiency with less overhead.
Tx Burst :
By default, it’s “
Enable
”. To
Disable
is to deactivate Tx Burst.
With TX burst enabled, AP will send many packets in a burst, without collision detection
and RTS/CTS for each packet. TX Burst have better throughput but cause interference
with other APs in channel.
WMM :
By default, it's “
Disable
”.
Select Enable, the packets with QoS WMM will
have higher priority.
Click
Save
button to save your changes. Click
Reboot
button to activate your changes.
Site Survey
Use this tool to scan and locate WISP Access Points and select one to associate with.
Please click on
Wireless -> Site Survey
. Below depicts an example for site survey.
ESSID : Available
Extend Service Set ID of surrounding Access Points.
MAC Address :
MAC addresses of surrounding Access Points.
Signal :
Received signal strength of all found Access Points.
Channel :
Channel numbers used by all found
Access Points.
Security :
Security type by all found
Access Points.
Band :
Wireless band used by all found
Access Points.
Network Type :
Network type used by all found
Access Points.
Select :
Click “
Select
” to configure settings and associate with chosen AP.