Enhancing real-time communication over cots ethernet switches

Marau, Ricardo; Almeida, Luís; Pedreiras, Paulo

doi:10.1109/wfcs.2006.1704170

Cited by 61 publications

(41 citation statements)

References 5 publications

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“…The FTT -Switched Ethernet (FTT-SE) [9] is based on the FTT paradigm, and brings a novel advantage, the absence of collisions between concurrent communication between different slaves. Due to its micro-segmented switch-based structure, each port in the switch is a private domain collision.…”

Section: B Network Support For Real-time Communicationsmentioning

confidence: 99%

“…The FTT-SE master manages the FTT-SE network by receiving requests from the slaves to reserve communication opportunities, and broadcasting Trigger Messages to specify what time each slave, such as the producer and the consumer, can communicate with another slave (details are given in Subsection II-B and in [9]). …”

Section: E Ftt-se Master and Service Producers And Consumersmentioning

confidence: 99%

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Quality of service on the arrowhead framework

Albano

Barbosa

Silva

et al. 2017

2017 IEEE 13th International Workshop on Factory Communication Systems (WFCS)

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Quality of Service (QoS) is an important enablerfor communication in industrial environments. The ArrowheadFramework was created to support local cloud functionalitiesfor automation applications by means of a Service OrientedArchitecture. To this aim, the framework offers a number ofservices that ease application development, among them theQoSSetup and the Monitor services, the first used to verify andconfigure QoS in the local cloud, and the second for onlinemonitoring of QoS. This paper describes how the QoSSetupand Monitor services are provided in a Arrowhead-compliantSystem of Systems, detailing both the principles and algorithmsemployed, and how the services are implemented. Experimentalresults are provided, from a demonstrator built over a real-timeEthernet network. (QoS) is an important enabler for communication in industrial environments. The Arrowhead Framework was created to support local cloud functionalities for automation applications by means of a Service Oriented Architecture. To this aim, the framework offers a number of services that ease application development, among them the QoSSetup and the Monitor services, the first used to verify and configure QoS in the local cloud, and the second for online monitoring of QoS. This paper describes how the QoSSetup and Monitor services are provided in a Arrowhead-compliant System of Systems, detailing both the principles and algorithms employed, and how the services are implemented. Experimental results are provided, from a demonstrator built over a real-time Ethernet network.

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Section: B Network Support For Real-time Communicationsmentioning

confidence: 99%

Section: E Ftt-se Master and Service Producers And Consumersmentioning

confidence: 99%

Quality of service on the arrowhead framework

Albano

Barbosa

Silva

et al. 2017

2017 IEEE 13th International Workshop on Factory Communication Systems (WFCS)

View full text Add to dashboard Cite

show abstract

“…FTT-SE [16] uses an optimized master/ slave mechanism compared to standard master/ slave protocol where the master addresses periodically several slaves with a single Trigger Message (TM) instead of using one control message for each slave. This fact allows an efficient bandwidth utilization and saves overheads compared to standard master/ slave protocol.…”

Section: Master-slave Ethernet Protocolsmentioning

confidence: 99%

“…Various real time communication solutions are recently offered for Switched Ethernet. These approaches range from enhancing the switch behavior like Ethereal [10] and using specific scheduling algorithms [11], to implementing techniques to control and prevent switches overloads like Traffic Shaping [12], TDMA (Time Triggered Ethernet (TTE) [13]) and master/slave mechanism (Ethernet PowerLink (EPL) [14], EtherCAT [15], Flexible Time Triggered Switched Ethernet (FTT-SE) [16]). An overview of these solutions can be found in [17] and [18].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Master/Slave Switched Ethernet for Military Embedded Applications

Mifdaoui

Frances

Fraboul

2010

IEEE Trans. Ind. Inf.

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“…In this paper, we consider P/D tasks and a distributed computing platform composed of multi-core nodes, and interconnected by a Flexible Time Triggered -Switched Ethernet (FTT-SE) network [2]. A P/D task starts with a master thread executing sequentially, which may then fork to be executed in parallel on local and remote nodes.…”

Section: Introductionmentioning

confidence: 99%

Allocation of Parallel Real-Time Tasks in Distributed Multi-core Architectures Supported by an FTT-SE Network

Garibay-Martínez¹,

Nelissen²,

Ferreira³

et al. 2015

Lecture Notes in Computer Science

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Distributed real-time systems such as automotive applications are becoming larger and more complex, thus, requiring the use of more powerful hardware and software architectures. Furthermore, those distributed applications commonly have stringent real-time constraints. This implies that such applications would gain in flexibility if they were parallelized and distributed over the system. In this paper, we consider the problem of allocating fixed-priority fork-join Parallel/Distributed real-time tasks onto distributed multi-core nodes connected through a Flexible Time Triggered Switched Ethernet network. We analyze the system requirements and present a set of formulations based on a constraint programming approach. Constraint programming allows us to express the relations between variables in the form of constraints. Our approach is guaranteed to find a feasible solution, if one exists, in contrast to other approaches based on heuristics. Furthermore, approaches based on constraint programming have shown to obtain solutions for these type of formulations in reasonable time. This implies that such applications would gain in flexibility if they were parallelized and distributed over the system. In this paper, we consider the problem of allocating fixed-priority fork-join Parallel/Distributed realtime tasks onto distributed multi-core nodes connected through a Flexible Time Triggered Switched Ethernet network. We analyze the system requirements and present a set of formulations based on a constraint programming approach. Constraint programming allows us to express the relations between variables in the form of constraints. Our approach is guaranteed to find a feasible solution, if one exists, in contrast to other approaches based on heuristics. Furthermore, approaches based on constraint programming have shown to obtain solutions for these type of formulations in reasonable time.

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Enhancing real-time communication over cots ethernet switches

Abstract: Abstract

Cited by 61 publications

References 5 publications

Quality of service on the arrowhead framework

Quality of service on the arrowhead framework

Performance Analysis of a Master/Slave Switched Ethernet for Military Embedded Applications

Allocation of Parallel Real-Time Tasks in Distributed Multi-core Architectures Supported by an FTT-SE Network

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