Method and Device for Relaying Time-Triggered and Event-Triggered Communications
    3.
    发明申请
    Method and Device for Relaying Time-Triggered and Event-Triggered Communications 审中-公开
    用于中继时间触发和事件触发通信的方法和设备

    公开(公告)号:US20150120803A1

    公开(公告)日:2015-04-30

    申请号:US14397809

    申请日:2013-05-14

    CPC classification number: H04L47/50 H04L12/403 H04L12/64 H04L41/06

    Abstract: The invention relates to a method for distributing event-triggered (ET) and time-triggered (TT) messages in a distributed real-time system by means of a distributor unit that comprises a low-level relay unit (LLVME) and a high-level relay unit (HLVME), wherein communication ports of the distributor unit to other relay units and/or end systems of the real-time systems are attached to the LLVME. The invention further relates to such a distributor unit and to a real-time system comprising such a distributor unit. According to the invention, the LLVME has access to a global time base and is configured to differentiate between ET messages and TT messages, wherein the LLVME forwards an ET message that is incoming at one of its ports to the HLVME such that the HLVME can carry out the analysis and temporal scheduling of said ET message before it delivers this ET message back to the LLVME for issue at the designated output ports of the LLVME, and, prior to the known issuing of a TT message, the LLVME transmits a pause frame to the HLVME such that no ET message is scheduled to be transmitted by the HLVME during this anticipated and scheduled TT message transmission slot, and wherein the LLVME delivers an incoming TT message directly for issue at the designated output ports in accordance with the known time plan.

    Abstract translation: 本发明涉及一种在分布式实时系统中通过分配器单元分发事件触发(ET)和时间触发(TT)消息的方法,该分配器单元包括低级中继单元(LLVME) 级别中继单元(HLVME),其中分配器单元与实时系统的其他中继单元和/或终端系统的通信端口附接到LLVME。 本发明还涉及这种分配器单元和包括这种分配器单元的实时系统。 根据本发明,LLVME可以访问全球时基,并且被配置为区分ET消息和TT消息,其中LLVME将其端口之一进入的ET消息转发到HLVME,使得HLVME可以携带 在将该ET消息传送到在LLVME的指定输出端口发出的LLVME之前,在所述ET消息的分析和时间调度之前,在已知发出TT消息之前,LLVME将暂停帧发送到 HLVME,使得在该预期和调度的TT消息传输时隙期间没有调度由HLVME发送的ET消息,并且其中LLVME根据已知的时间计划直接在指定的输出端口发送进入的TT消息以进行发布。

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