Dell 2300 Wireless Broadband Router User Manual

Page 170

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The amount of time in Kusecs (one Kusec equals 1,024 microseconds) between radio beacons from the Wireless
Broadband Router to its client stations. The value range is from 1 to 65535.

RTS Threshold

The packet size above which the Wireless Broadband Router will issue a Request to Send before sending the
packet.

RTS (Request to Send) mechanism prevents the "Hidden Node" problem. When two stations are within range of
the same Access Point (AP) but are not within range of each other, they are hidden nodes for each other. The
packets from these two stations may collide if they arrive at the AP at the same time. To prevent data collision
with the hidden node, you can activate RTS mechanism. If RTS mechanism is activated, the station will send a
RTS first to inform the AP that it is going to transmit the data. Then, the AP will reply with the CTS (Clear to
Send) to all stations within its range to notify all other stations and reserve the bandwidth for your data.

The RTS threshold controls what size data packet would issue a RTS. Only when the packet exceeds the RTS
threshold, the device will send a RTS before sending the packet. There is trade-off to consider what value you
should set for the RTS threshold. Small value causes RTS to be sent more often, and it would waste the
bandwidth. However, the more often RTS packets are sent, the sooner the system can recover from collisions. It
is recommended to use the default value or only minor reductions of this default value. The value range is from 0
to 2347.

Fragmentation Threshold

The fragmentation threshold, specified in bytes, determines whether data packets will be fragmented and at what
size. Packets that are smaller than the specified fragmentation threshold value will not be fragmented. Packets
that are larger than the fragmentation threshold will be fragmented into smaller packets and transmitted a piece at
a time instead of all at once. Thus, it will reduce the need for retransmission and improve overall network
performance. Fragmentation is activated usually when the system is in heavy traffic and interference environment.
The setting must be within the range of 256 to 2346 bytes. It is recommended to use the default value or only
minor reductions of this default value.

DTIM Interval

DTIM (Delivery Traffic Indication Message) Interval, always a multiple of the beacon period, determines how often
the beacon contains a traffic indicator map (TIM). The TIM alerts stations in sleep state to stay awake long
enough to receive their data frames. The value range is from 1 to 255.

Wireless Bridge

Wireless Bridging can be used to increase the coverage of your wireless network and/or to provide wired access
to a remote computer(s). You need two or more Dell TrueMobile 2300 Wireless Broadband Routers to setup
Wireless Bridging.

To setup wireless bridging, configure the wireless settings for all of your Dell TrueMobile 2300 Wireless
Broadband Routers to the same settings.

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