Topology discovery in an automotive ethernet network

A network and topology technology, applied in the field of Ethernet-based communication network, can solve the problems of unused and inapplicable protocols

Active Publication Date: 2021-02-26
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of protocol is not used in the automotive environment, and therefore is not suitable for

Method used

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  • Topology discovery in an automotive ethernet network
  • Topology discovery in an automotive ethernet network
  • Topology discovery in an automotive ethernet network

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Embodiment Construction

[0033]The detailed description set forth herein is intended to give the skilled person an understanding of certain embodiments of the present invention.

[0034]figure 1 An example of a car network 101 is shown. The network shows an area-oriented architecture and includes nodes (111, 112, 121, 122, 151, 152), area controllers (110, 120, 150), and server nodes (129, 139, 169). The area includes, for example, a front left area having a controller 110 and nodes 111 and 112, or a back left area having a controller 150 and nodes 151 and 152. Server nodes with processing capabilities include 129, 139, and 169. All nodes and controllers are interconnected by one or more data transmission buses, such as automotive Ethernet, MOST, and CAN in various variants thereof.

[0035]It may be advantageous to transfer processing activity from sensors to more central regional controllers and server nodes. The server node may have enough processing power to handle more complex analysis, sensor data fusion, e...

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PUM

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Abstract

A method is presented by which a node may determine the topology of a computation system wherein the computation system is a network of nodes, and wherein multiple nodes are capable of being a grandmaster clock source. The method includes starting a best clock selection process, announcing clock information, and if the node is not acting grand master then receiving messages announcing clock information from other nodes of the network. The method also includes extracting topology information from the messages, and if the node is acting grandmaster then retiring from the position of grandmaster,and repeating the best clock selection process steps until no node of the network becomes acting grandmaster.

Description

[0001]The present disclosure relates to an Ethernet-based communication network, especially an Ethernet-based communication network as used in an automotive environment. It may be desirable for electronic control units (ECUs) in automobiles to be able to "discover" the network topology of the network to which they are attached. It may be desirable that the ECU can autonomously identify the nearest neighbors and also those connected ECUs that have been moved away by one or more "hops" or steps.Background technique[0002]Motor vehicle manufacturers (OEMs) and Tier 1 suppliers in the automotive industry are preparing next-generation architectures for automotive controllers or electronic control units (ECUs). One development is the so-called "area-oriented architecture" in which the ECU is grouped into areas, such as the right front door area. The difference from the previous architecture is that the controller is located at a certain physical or spatial location in order to best collect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04J3/06
CPCH04L12/40H04J3/0679H04J3/0667H04J3/0641H04L12/40006H04L2012/40273
Inventor H·津纳J·布兰德
Owner CONTINENTAL AUTOMOTIVE TECH GMBH
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