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Viewing report
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Investigations on MAC and Link Layer for a Wireless
PROFIBUS over IEEE 802.11. Edition No. 1
VDM Publishing House, March 2008, Pages: 236
Fieldbus systems are a specific class of LAN technology for industrial
and factory applications, targeted for fulfilling hard
(safety-critical) realtime requirements in harsh environments. Many of
these applications involve mobile subsystems and could benefit from
recent wireless LAN technologies replacing the current cable-based
systems.
The IEEE 802.11 wireless LAN standard is currently the leading WLAN
technology, many components are commercially available. Hence, an
immediate question is if and how this technology could be used for
wireless fieldbus systems. An important aspect of this question is how
to provide good ``realtime performance'' over the error-prone and
time-variable wireless link. The notion of realtime performance
captures the hard timing- and reliability requirements of industrial
applications.
This thesis considers this question for the PROFIBUS, a fieldbus system
popular in Europe. As a final goal, it follows the vision of
integrating wired and wireless stations into a single PROFIBUS LAN.
The scope of the investigations is focused to the MAC- and link-layer.
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