BenQ AWL-700 - Manual (Page 14)

BENQ Corporation
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ESSID – The ESSID is a unique ID given to the Access Point. Wireless clients
associating to the Access Point must have the same ESSID. The ESSID can have up to
32 characters.
Channel – You may select any of the available channels as an operational channel for
your Access Point.
RTS Threshold – RTS Threshold is a mechanism implemented to prevent the “Hidden
Node” problem. “Hidden Node” is a situation in which two stations are within range
of the same Access Point, but are not within range of each other. Therefore, they are
hidden nodes to each other. When a hidden station starts data transmission with the
Access Point, it might not notice that the other station is already using the wireless
medium. When these two stations send data at the same time, they might collide
when arriving simultaneously at the Access Point. The collision will most certainly
result in a loss of messages for both stations. Thus, the RTS Threshold mechanism will
provide the solution to prevent data collisions. When the RTS is activated, the station
and its Access Point will use a Request to Send/Clear to send protocol (RTS/CTS).
The station will send an RTS to the Access Point, informing that it is going to transmit
the data. Upon receipt, the Access Point will respond with a CTS message to all
station within its range to notify all other stations to defer transmission. It will also
confirm to the requesting station that the Access Point has reserved the channel for
transmission.
Fragmentation Threshold – Fragmentation mechanism is used for improving the
efficiency when there is high traffic within the wireless network. If you transmit large
files in a wireless network, you can enable the Fragmentation Threshold and specify the
packet size. The mechanism will split the packet into the packet size you set.
Rates Set – By default the unit adaptively selects the highest possible rate for
transmission. In case of obstacles or interference, the system will step down. Select the
Basic Rates to be used among the following options: 1 - 2 (Mbps), 1 - 2 - 5.5 – 11 (Mbps).