End-to-end delay calculation method, device, equipment, storage medium and chip

By acquiring and calculating the message frame number and node count of the target link, the end-to-end delay of the autonomous driving system is calculated in real time, which solves the problem that the delay cannot be calculated in real time in the prior art, and improves the real-time and security of the system.

CN119071195BActive Publication Date: 2025-03-25XIAOMI EV TECH CO LTD
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Patent Information

Application Number
CN202411509154.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-25
Publication Date
2025-03-25
Estimated Expiration
2044-10-25

AI Technical Summary

Technical Problem

The prior art cannot calculate the end-to-end delay of the link in real time, resulting in a reduction in real-time and safety of the autonomous driving system.

Method used

By obtaining the target link information, including the sequence number of message frames and the node count, the end-to-end delay of the target link is calculated in real time. When the message frame reaches the end node and is not used, the method uses the start timestamp to perform delay calculation, and sends a functional degradation signal when the delay exceeds the preset threshold.

Benefits of technology

Real-time end-to-end delay calculation of key links of autonomous driving systems is realized, real-time and security of the system are improved, and safety is solved, resulting in the reduction of safety caused by the inability to calculate delays in real-time.

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Abstract

The present disclosure relates to an end-to-end delay calculation method, device, equipment, storage medium and chip, wherein the method comprises: obtaining target link information, the target link information at least comprises the sequence number and node count of the message frame, the node count is used to indicate the number of nodes in the target link that have executed the message frame; performing delay calculation based on the sequence number and node count of the message frame in the target link information to obtain the end-to-end delay of the target link, the end-to-end delay is used to indicate the time required for the message frame to be processed on the target link. In this way, the technical problems existing in the related art such as the inability to calculate the end-to-end delay of the link in real time and the reduction of the real-time performance and safety of the autonomous driving system can be solved.
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