LevelOne WHG-1000 User Manual
Page 39
WHG-1000 300Mbps Wireless PoE Hotspot Gateway
User's Manual
39
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 : TRTS 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 “Enable”. 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.
802.11g Protection : Click Enable button to activate 802.11g Protection Mode, and Disable to inactivate
802.11g Protection Mode.
Change these settings as described here and click Save button to save your changes. Click Reboot button to
activate your changes. The items in this page is for AP's RF general settings and will be applied to all VAPs and
WDS Link.