Basics
As far as industrial communication is concerned, wireless technologies Trusted Wireless, Bluetooth and WLAN (IEEE 802.11) as well as GSM/GPRS have proved their worth in the field of wireless signal transmission.
Keep yourself well-informed about the individual technologies and their fields of application.
Trusted Wireless
... as the preferred technology for non-critical time signals over "long distances".
Bluetooth
... as the preferred technology for integration of automation components in fieldbus or industrial Ethernet networks.
WLAN
... as the preferred technology for integrating many devices or PCs with high data rates in an IT or industrial Ethernet network.
GSM / GPRS
... as the preferred technology for mobile communication through the telephone network.