Secure WLANs for industrial applications
Monday, 24 May 2004 19:16 EST
THE number of industrial applications for wireless networks will certainly grow dramatically in the near future but automation engineers - who are naturally cautious people - always like to know where they are going to put their feet. The IEEE 802.11 standard originally specified one diffused infrared (already forgotten by most of us) and two radio technologies (DSSS and FHSS).The wireless versions operating in the 2.4 GHz frequency band presently lead the market. Each variation has its own particularities regarding network security and reliability. We shall focus here on FHSS.
Reliability of data transfer is almost a knee-jerk conversation topic for network and automation managers; the very nature of wireless exacerbates apprehension.
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