Frequency Planning
FREQUENCY INTERFERENCE
If more than one WCAP or Wi-Fi access points are in the same room or within 30 m, we advise that only
one uses automatic frequency selection. This is to avoid that the frequency scanning is disturbed by the
other access point(s). If multiple access points are used within each other’s reach, manual frequency
selection based on frequency planning is strongly recommended to avoid that Wi-Fi access points and
Confidea WCAP would use the same frequencies.
When the Confidea wireless system is set to manually select the wireless carrier frequency, then you must
check that the Confidea wireless carrier does not overlap the already occupied Wi-Fi wireless carrier
channels.
When using manual frequency selection in 5 GHz band , ideally the frequency selection is done in such way
that between 2 used frequencies , there is a 40 MHz “distance” to avoid interference by RF sidebands.
HOW TO AVOID INTERFERENCE
The transmission mode between WDUs and WCAP is specifically designed to be used in very challenging
environments with a high density of Wi-Fi signals that are present due to Wi-Fi access points as well as
smart devices, which may cause RF interferences
Wi-Fi devices such as smartphones , tablets, etc., can send regular probing signals over the entire Wi-Fi
band to search for a Wi-Fi connection. This probing can cause temporary interference and will continue until
a Wi-Fi connection is established. When a large number of Wi-Fi devices is present in the room , these
probing signals may cause WDU connection loss due to the saturation of the used frequency .
Therefore it is strongly recommended that a Wi-Fi collection point is set up, so Wi-Fi devices can lock on to
them and reduce the risk of interference.
The Wi-Fi access points must have sufficient capacity to ensure Wi-Fi connection for all Wi-Fi
devices present. If Wi-Fi connection capacity is insufficient for all mobile Wi-Fi devices present,
then unstable functionality of the Confidea wireless system due to interference cannot be
excluded!
CONF IGURE FREQUENCY SETTING S 61
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