Several techniques can be implemented to improve the
performance of wireless in industrial application. Hidden node
problems can be solved by adding a handshake system to the
network, in which permission to transmit must be requested
and granted before transmission may occur. This allows the
receiver to inform all other devices in its range, some of which
may be out of the transmitter’s range, that it is expecting a
transmission and requires the channel to be kept open. This
does however add significant overhead to the channel, especially
in the case of small data packets, where the initialisation
of transmission may require more time and data than the
actual information to be communicated.