Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment
Journal of the ACM (JACM)
Achieving Real-Time Communication over Ethernet with Adaptive Traffic Smoothing
RTAS '00 Proceedings of the Sixth IEEE Real Time Technology and Applications Symposium (RTAS 2000)
EtheReal: A Host-Transparent Real-Time Fast Ethernet Switch
ICNP '98 Proceedings of the Sixth International Conference on Network Protocols
IEEE Transactions on Parallel and Distributed Systems
Performance evaluation of switched ethernet as communication media in controller networks
CompSysTech '07 Proceedings of the 2007 international conference on Computer systems and technologies
ICESS '07 Proceedings of the 3rd international conference on Embedded Software and Systems
Ethernet-based real-time communications with PROFINET IO
ACMOS'05 Proceedings of the 7th WSEAS international conference on Automatic control, modeling and simulation
Periodic message scheduling on a switched ethernet for hard real-time communication
HPCC'06 Proceedings of the Second international conference on High Performance Computing and Communications
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There is a strong interest of using the cheap and simple Ethernet technology for industrial and embedded systems. This far, however, the lack of real-time services has prevented this change of used network technology. This paper presents enhancements to full-duplex switched Ethernet for the ability of giving throughput and delay guarantees. The switch and the end-nodes controls the real-time traffic with Earliest Deadline First (EDF) scheduling on the frame level. No modification to the Ethernet standard is needed in the network that supports both real-time and non-real-time TCP/IP communication. The switch is responsible for admission control where feasibility analysis is made for each link between source and destination. The switch broadcasts Ethernet frames regularly to clock synchronize the end nodes and to implement flow control for non-real-time traffic.