Smart star coupler for a time-triggered communication protocol and method of communicating between nodes within a network using the time-triggered protocol

A time-triggered protocol, star coupler technology, applied in the directions of star/tree network, ring network, multiplexing communication, etc. Effects of increased data traffic, high total available bandwidth

Active Publication Date: 2011-12-28
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The known star coupler concept is capable of disconnecting one or more connected legs from the rest of the cluster, but does not support separate operation of individual paralleled legs

Method used

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  • Smart star coupler for a time-triggered communication protocol and method of communicating between nodes within a network using the time-triggered protocol
  • Smart star coupler for a time-triggered communication protocol and method of communicating between nodes within a network using the time-triggered protocol
  • Smart star coupler for a time-triggered communication protocol and method of communicating between nodes within a network using the time-triggered protocol

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Embodiment Construction

[0028] figure 1 The network used in the present invention is shown. figure 1 The shown cluster is divided into subnetworks (A-D), each of which is supported by a passive bus or an active star coupler in a connection topology. These sub-networks are interconnected by intelligent star couplers 11 provided for internal sub-network communication. Several subnetworks A-D are connected to an intelligent star coupler 11 . Subnets A-D have different topologies. Specifically, subnet B is depicted as including a passive bus. Subnetwork C includes a hybrid topology with star coupler and passive bus topology. Subnet D includes an active star topology, where subnet A includes only a single node. Naturally, any number of subnets can be connected. Depending on the protocols used in the network, it is possible to limit the topology to only one subnet that can contain a single conventional active star coupler.

[0029] refer to figure 2, specifically describe node n in this subnetwork...

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Abstract

The present invention relates to a star coupler connected to a plurality of nodes in a network using a slot-based time-triggered protocol. The invention also relates to a network comprising a cluster with at least one node. Furthermore, the invention relates to a method of communicating between nodes in a network using a time-triggered protocol. In order to provide a star coupler capable of increasing bandwidth and communicating with low transmission delay, a star coupler (11) is proposed comprising a switch (22) having a plurality of input branches and an output branch, wherein a switch controller for controlling the switch (22) is provided; the coupler also includes means (14, 15) for deriving relevant information about the timing of the protocol, which information is used to set the Data is selectively transmitted to at least one predetermined output.

Description

technical field [0001] The present invention relates to a star coupler connected to a plurality of nodes in a network using a slot-based time-triggered protocol. The invention also relates to a network comprising a cluster, wherein the cluster comprises at least one node. Furthermore, the invention relates to a method of communicating between nodes in a network using a time-triggered protocol. Background technique [0002] Reliable automated communication networks generally rely on time-triggered communication protocols such as TTP / C or FlexRay based on propagation methods according to predetermined TDMA mechanisms. A time-triggered protocol is proposed for use in distributed real-time communication systems eg in the automotive industry. Such a communication protocol is described in "FlexRay - A Communication System for advanced automated Control Systems" in SEAworld congress 2001. [0003] In these systems, the medium access protocol is based on a timetriggered multiplex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/417H04L12/43H04L12/44H04L12/56
CPCH04L49/55H04J3/0685H04L2012/40241H04L12/43H04L12/40006H04L2012/445H04L12/44H04L12/28H04L12/417
Inventor 弗朗茨·翁格曼安德烈斯·范瓦格宁根
Owner NXP BV
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