Data transmission method and system in roaming handover process, and device and storage medium

By improving the data transmission method of the access point device during roaming handover, downlink data is sent only after receiving notification that the current access point device has already sent data. This solves the data transmission order problem and achieves the stability and continuity of seamless roaming.

WO2026153117A1PCT designated stage Publication Date: 2026-07-23SANECHIPS TECH CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SANECHIPS TECH CO LTD
Filing Date
2025-12-30
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

During roaming handover, non-access point devices have difficulty transmitting downlink data in the order of the current AP first and then the target AP, which can cause communication users to experience problems such as packet loss, call interruption or video stream stuttering.

Method used

After obtaining the downlink data to be sent from the access point device, the data is only sent to the non-access point device after receiving a notification that the current access point device has completed data transmission, thus ensuring the order of data transmission.

Benefits of technology

It effectively solves the problems of packet loss, call interruption or video stream stuttering during roaming handover, and achieves data transmission with guaranteed order.

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Abstract

Disclosed is a data transmission method in a roaming handover process, which method is applied to a first access point device. The method comprises: acquiring first downlink data to be sent to a non-access point device (S201), wherein a first access point device is an access point device to which the non-access point device is handed over from a second access point device during roaming handover; and only after receiving second information, sending said first downlink data to the non-access point device (S202), wherein the second information is used for notifying the first access point device that second downlink data on the second access point device has been sent to the non-access point device, and the first access point device is allowed to send said first downlink data to the non-access point device.
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