A Redundancy Scheduling Method for Automotive Ethernet 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 problems such as long failover time, low forwarding efficiency, and high implementation complexity, and achieve security and robustness. performance, easy management, and high performance

Active Publication Date: 2021-04-02
AUTOCORE INTELLIGENT TECH NANJING CO LTD
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Problems solved by technology

[0005] However, in the ring structure network, the Layer 2 broadcast storm problem still needs to be solved. 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); A set of negotiation and scheduling mechanisms are needed to cooperate with the TSN standard to further improve the high availability and time determinism of the automotive network

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  • A Redundancy Scheduling Method for Automotive Ethernet Based on Ring Networking
  • A Redundancy Scheduling Method for Automotive Ethernet Based on Ring Networking
  • A Redundancy Scheduling Method for Automotive Ethernet Based on Ring Networking

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[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] The four block gateways are logically combined into one gateway, which is called "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 equiv...

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Abstract

The present invention provides a redundant scheduling method for automotive Ethernet based on ring networking. Under the circular automotive Ethernet redundant networking, a complete set of negotiation and scheduling mechanism is provided for block gateways, and all block gateways are As a logical gateway device, redundant broadcast messages are digested inside the logical gateway to avoid the occurrence of loop problems; distributed elastic forwarding technology is used inside the logical gateway to realize the second and third layer forwarding of messages, and the maximum Maximize the processing capacity of each block gateway; when the connection between any two block gateways fails, the ring connection is switched to a chain connection, and the business of this mechanism is not affected, and can quickly converge and switch. Ensure high availability of automotive networks.

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...

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Application Information

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Patent Type & Authority Patents(China)
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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