This paper presents a top-down approach to design switched Ethernet networks based upon tree topologies for realtime automation systems. The approach considers each port of a switch as an exclusive networking resource and thus permits concurrent communication over different ports. We firstly focus on a class of special cases with unitary packet-sizes and… (More)
This paper presents a top-down Quality-of-Service (QoS) approach to design realtime Ethernet networks for automation systems based upon tree topologies. Therefore, the parallelism of switched unicast communication is utilized by generating an off-line schedule, which considers each port of a switch as an exclusive networking resource. We point out that the… (More)
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