Data transmission method and device, chip, medium and product

By limiting the superframe number difference of protocol data units at the sending end and controlling the data transmission path, the problems of poor data transmission and reception caused by HFN out-of-synchronization are solved, ensuring smooth and correct data transmission and reducing the risk of system failure.

CN122093489APending Publication Date: 2026-05-26SPREADTRUM COMMUNICATION (SHANGHAI) CO LTD
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Patent Information

Application Number
CN202610262708.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-04
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing technologies, the HFN out-of-sync problem causes data transmission and reception to be unsmooth and incorrect. It cannot be proactively prevented from the sending end, resulting in a large number of data packet decryption failures and a surge in retransmission overhead, causing service interruption or connection release.

Method used

By obtaining the difference between the superframe number of the target protocol data unit and the superframe number of the protocol data unit to be sent at the sending end, the sending end is controlled to stop sending data when the difference exceeds a preset value, and path isolation processing is performed to ensure that the difference of the superframe number is within a reasonable range and to avoid HFN out of sync.

Benefits of technology

This system proactively prevents HFN synchronization failures from the sending end, ensuring smooth and accurate data transmission and reception, reducing packet decryption failures and retransmission overhead, and improving system stability and efficiency.

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Abstract

The invention provides a data transmission method and device, a chip, a medium and a product, and relates to the technical field of data transmission. The method comprises the steps of obtaining a target protocol data unit; obtaining a superframe number corresponding to the target protocol data unit, and determining the superframe number corresponding to the target protocol data unit as a first target superframe number; acquiring a second target superframe number corresponding to the protocol data unit to be sent; calculating an absolute value of a difference value between the first target superframe number and the second target superframe number; and when it is detected that the absolute value of the difference value between the first target super-frame number and the second target super-frame number is greater than a first preset value, controlling the sending end to stop sending the protocol data unit to be sent to any transmission path in the plurality of transmission paths. By limiting the absolute value of the difference value of the first target super-frame number and the second target super-frame number, the problem of HFN out-of-step at the transmitting end and the receiving end can be actively avoided, the smoothness and correctness of data transmitting and receiving can be ensured, and the method has the advantages of low cost, high efficiency, simplicity in implementation and the like.
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