Background scan

In order to identify other access points within the device's local radio range, the device can record the beacons received (management frames) and store them in the scan table. Since this recording occurs in the background in addition to the access points' "normal" radio activity, it is called a "background scan".

If a value is entered here, the device searches the frequencies in the active band that are currently not in use in cycles within this interval in order to find available access points.

The background scan function is usually deployed for rogue AP detection for the device in access point mode. This scan interval should correspond to the time span within which rogue access points should be recognized, e.g. 1 hour.

Conversely, for the device in client mode, the background scan function is generally used for improved mobile WLAN client roaming. In order to achieve fast roaming, the scan time is limited here, for example, to 260 seconds.