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Automobile Ethernet redundancy scheduling method based on ring networking

A technology of ring networking and scheduling method, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve the problems of low forwarding efficiency, high implementation complexity, long failover time, etc., and achieve convenient management and high performance. , to ensure the effect of security and robustness

Active Publication Date: 2021-02-02
AUTOCORE INTELLIGENT TECH NANJING CO LTD
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  • Abstract
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Problems solved by technology

[0005] However, in the ring structure network, we still need to solve the layer 2 broadcast storm problem. Although the existing spanning tree protocol can solve it, the implementation complexity is high, the forwarding efficiency is low, and the failover time is long (second level); at the same time, We also need a set of negotiation and scheduling mechanisms to cooperate with the TSN standard to further improve the high availability and time determinism of the automotive network

Method used

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  • Automobile Ethernet redundancy scheduling method based on ring networking
  • Automobile Ethernet redundancy scheduling method based on ring networking
  • Automobile Ethernet redundancy scheduling method based on ring networking

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Embodiment

[0028] Such as figure 1 As shown on the left, the ring links of four block gateways (Zonal gateways) distributed at the four corners of the car body constitute a redundant ring backbone network in the car. Each block gateway will be connected to N devices respectively. This ring backbone network carries the end-to-end communication in the entire vehicle, and at the same time plays a decisive role in the security and robustness of the entire in-vehicle network.

[0029] We logically merge four block gateways into one gateway, which we call "logical gateway". Each block is a member of the logical gateway. The link between members not only carries forwarded messages for in-vehicle communication, but also carries special messages negotiated with each other. Changes in network topology such as figure 1 As shown on the right, the structure of the entire vehicle network has evolved from a ring + chain structure to a simple chain structure. Each endpoint device is equivalent to b...

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Abstract

The invention provides an automobile Ethernet redundancy scheduling method based on ring networking, which provides a set of complete negotiation and scheduling mechanism for block gateways under thering automobile Ethernet redundancy networking, regards all the block gateways as a logic gateway device, digests redundant broadcast messages in the logic gateway, and avoids generation of a loop problem; a distributed elastic forwarding technology is adopted in the logic gateway to realize two-layer and three-layer forwarding of the message, and the processing capacity of each block gateway is exerted to the maximum extent; and when the connection between any two block gateways fails, the annular connection is switched into the chain connection, so that the service of the mechanism is not influenced and can be quickly converged and switched, and the high availability of the automobile network is ensured.

Description

technical field [0001] The invention relates to the field of automotive electronic and electrical architecture, in particular to an automotive Ethernet redundancy scheduling method based on ring networking. Background technique [0002] In traditional automotive networks, automotive electrical / electronic (EE) architectures with numerous electronic control units (ECUs) and a central vehicle gateway are becoming very complex over time. The wiring harness used for this structural network becomes the third heaviest part on the body, with a maximum weight of 50kg and a total length of up to 5km, which is expensive. The development trend of autonomous driving will introduce more ECUs, namely actuators and sensors, further increasing the demand for wiring harnesses. In the past, ECU consolidation was one of the industry responses to reduce complexity. Especially in ADAS and Cockpit Electronics, dedicated domain controllers replace multiple ECUs. In the future, Automotive Etherne...

Claims

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Application Information

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IPC IPC(8): H04L12/437H04L12/703H04L45/28
CPCH04L12/437H04L45/28
Inventor 李霖张旸陈诚
Owner AUTOCORE INTELLIGENT TECH NANJING CO LTD
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