CNET CWR-901 User Manual page 24

- Fragment Threshold: Fragmentation mechanism is used for improving the
efficiency when high traffic flows through the wireless network. If a wireless client
often transmits large files, users can enter new Fragment Threshold value to split
the packet. The value can be set from 256 to 2346. The default value is 2346.
- 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 wireless access point/router, but are not within range of
each other. Therefore, they are hidden nodes for each other. When a station starts
data transmission with the Wireless-G Router, 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 Wireless-G
Router. The collision will most certainly result in a loss of messages of both stations.
If the "Hidden Node" problem is an issue, please specify the packet size. The RTS
mechanism will be activated if the data size exceeds the value you set. The default
value is 2347.
- Beacon Interval: Beacon interval is the amount of time between beacon
transmissions. Before a station enters power save mode, the station needs the
beacon interval to know when to wake up to receive the beacon (and learn whether
there are buffered frames at the wireless router).
- Max Data Rate: By default, it selects the highest rate for transmission.
Preamble Type: A preamble is a signal used in wireless environment to
-
synchronize the transmitting timing including Synchronization and Start frame
delimiter. In a "noisy" network environment, the Preamble Type should be set to
Long Preamble. The Short Preamble is intended for applications where minimum
overhead and maximum performance is desired.
- Broadcast SSID: Select enabled to allow all the wireless stations to detect the
SSID of this wireless router.
Wireless network coverage: There are four options defining the Wireless network
-
coverage: Minimum, Limited, Normal and Maximum range.
- Protection: CCK and OFDM are the modulation schemes used for 802.11b and
802.11g respectively. Since packet collision increases when both standards are
used at the same time, enabling the Protection mode increases the performance.
User can choose from Auto, On, and Off.
Auto: STA will dynamically change as AP announcement.
Always On: Always send frame with protection.
Always Off: Always send frame without protection.
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