Data transmission processing method and vehicle

By identifying target devices and establishing a state machine in the vehicle-mounted intelligent terminal, and combining length and checksum verification in a two-dimensional manner, active verification and recovery of data transmission in vehicle scenarios are realized, solving the problem of device connection failure caused by missing bytes and improving the stability and reliability of data communication.

CN122372955APending Publication Date: 2026-07-10GREAT WALL MOTOR CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GREAT WALL MOTOR CO LTD
Filing Date
2026-04-16
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing technologies cannot proactively avoid byte loss during data transmission in automotive scenarios, leading to device connection failures that cannot be actively recovered. The broad triggering conditions for retransmission mechanisms result in resource waste, and the technologies are not specifically optimized for particular devices and processes, thus failing to meet the unique needs of automotive scenarios.

Method used

By identifying the target device and establishing a state machine to preload the expected length, and combining length and check code for dual-dimensional verification, a directed retransmission is triggered when a length mismatch and check code abnormality are detected, thereby achieving proactive verification and recovery of data transmission.

Benefits of technology

It solves the problem of device connection failure caused by missing bytes when the protocol stack writes data to the driver, improves the stability and reliability of data communication between the in-vehicle intelligent terminal and the target device, reduces the interference of abnormal device interaction to the driver, and optimizes the intelligent cockpit experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to a data transmission processing method and a vehicle, belonging to the field of data processing technology. It includes: obtaining the device identifier of a candidate device communicating with an in-vehicle intelligent terminal; determining a target device based on the device identifier; establishing a state machine for the target device; loading the expected length of a data report to be sent by the target device based on the state machine; receiving the data report sent by the target device; obtaining the first actual length and a first checksum field of the data report; if the first actual length does not match the expected length and the first checksum field is a preset abnormal value, sending a retransmission request to the target device and obtaining the retransmission result; determining the data report to be written and writing it into the human-machine interaction device driver of the in-vehicle intelligent terminal to parse and process the data report. This achieves active verification and recovery of data transmission integrity, solving the problem of device connection failure and inability to actively recover due to missing bytes when the protocol stack writes data to the driver.
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