A vehicle TBOX dual-card network switching method and device

By monitoring and dynamically adjusting the SIM card's data usage rate, combined with signal strength, flexible switching between vehicle TBOX dual-SIM networks was achieved, solving the problem of low network connection reliability and improving communication stability.

CN122373083APending Publication Date: 2026-07-10WUHAN JIANGXIA CHUNENG AUTOMOBILE TECHNOLOGY R&D CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN JIANGXIA CHUNENG AUTOMOBILE TECHNOLOGY R&D CO LTD
Filing Date
2026-04-15
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The existing vehicle TBOX dual-SIM network switching mechanism is inflexible, resulting in low network connection reliability. Especially in scenarios with operator traffic pools, the vehicle cannot access the Internet when the primary SIM card's traffic is exhausted.

Method used

By monitoring the data usage of the primary SIM card in the vehicle's TBOX, the monitoring cycle is dynamically adjusted, and network switching is performed when the data usage reaches a certain threshold. This is combined with signal strength to flexibly switch between dual-SIM networks.

Benefits of technology

This improves the reliability of vehicle communication, avoids communication interruptions due to insufficient bandwidth, and enables more flexible and reliable network switching.

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Abstract

This invention relates to a method and apparatus for switching between dual SIM cards in a vehicle TBOX, belonging to the field of vehicle control technology. The method includes: monitoring the data usage rate of the current primary SIM card in the vehicle TBOX during an initial monitoring period; updating the initial monitoring period based on the real-time data usage rate of the current primary SIM card after detecting that the data usage rate of the current primary SIM card is greater than or equal to a first usage rate threshold, wherein the updated monitoring period decreases linearly with the increase of the real-time data usage rate of the current primary SIM card; and switching the current primary SIM card to a backup SIM card and the current backup SIM card to the primary SIM card after detecting that the data usage rate of the current primary SIM card is greater than or equal to a second usage rate threshold. This invention effectively improves the flexibility of TBOX dual SIM card network switching and ensures the reliability of vehicle communication.
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