3.3.4Wireless Advanced
The tab identifies several parameters that are related to the 802.11b/g wireless net- work. We strongly suggested the default settings are not changed unless necessary. If you want to recovery to factory value, you click the “Reset to factory default value”.
Parameters | Default Value | Range |
Beacon Interval | 100 | 0~65535 |
RTS Threshold | 2347 | 0~2347 |
Fragment Threshold | 2346 | 256~2346 |
Preamble | Long | Long/Short |
3.3.4.1Beacon Interval
In infrastructure networks, the access point periodically sends beacons. You can set the beacon interval with the access point configuration screen. In general, the bea- con interval is set to 100 ms, which provides good performance for most applications.
In ad hoc networks, there are no access points. As a result, one of the peer stations assumes the responsibility for sending the beacon. After receiving a beacon frame, each station waits for the beacon interval and then sends a beacon if no other station does so after a random time delay. This ensures that at least one station will send a beacon, and the random delay rotates the responsibility for sending beacons.
By increasing the beacon interval, you can reduce the number of beacons and asso- ciated overhead, but that will likely delay the association and roaming process because stations scanning for available access points may miss the beacons. You can decrease the beacon interval, which increases the rate of beacons. This will make the association and roaming process very responsive; however, the network will incur additional overhead and throughput will go down. In addition, stations using power save mode will need to consume more power because they’ll need to awaken more often, which reduces power saving mode benefits.
Chapter 3 Configuration
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