Virtual baseband RIL layer reconstruction method for Android cloud mobile

By constructing an AT command channel and a virtual baseband system driven by a multi-state machine in a cloud phone, the problem of insufficient simulation and controllability of cellular communication capabilities in cloud phones is solved, realizing highly realistic cellular network simulation and multi-band switching, which is suitable for large-scale cloud deployment.

CN122120263APending Publication Date: 2026-05-29HUNAN XIAOSUAN TECH INFORMATION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN XIAOSUAN TECH INFORMATION CO LTD
Filing Date
2026-02-12
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies lack sufficient simulation, controllability, and adaptability of cellular communication capabilities in cloud phones, resulting in distortion of upper-layer business behavior and making it difficult to achieve high fidelity to the real baseband and controllability of multi-band switching.

Method used

Establish an AT command channel with the virtual baseband in the cloud phone environment, configure timeout and retry policies, receive AT responses and perform structured parsing, drive the SIM, network and voice state machines, follow the behavior timing of the real baseband, map state changes to requests and responses compatible with the IRadio interface, and simulate cellular network registration, frequency band switching and network drop recovery processes in the cloud.

Benefits of technology

It achieves a control plane and event timing simulation that is closer to real terminals, supports 4G/5G multi-band capabilities, reduces anomalies and compatibility issues on the Telephony side, and is suitable for large-scale automated testing and scenario playback.

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Abstract

The embodiment of the present disclosure provides a virtual baseband RIL layer reconstruction method for an Android cloud mobile phone, and belongs to the technical field of communication. Specifically, the method comprises the following steps: step 1, establishing an AT command channel between the cloud mobile phone environment and the virtual baseband, and configuring the timeout, retry strategy and mutual exclusion domain of the command; step 2, receiving an AT response or a non-request URC from the virtual baseband, and generating an event object by structurally analyzing the AT response or the non-request URC; step 3, driving a SIM state machine, a network state machine and a voice state machine to migrate states based on the event object; and step 4, mapping the state changes corresponding to the state migration into request, response or indication messages compatible with an IRadio interface in an Android Telephony framework, and calling the upper layer according to a preset timing. Through the scheme of the present disclosure, while ensuring high fidelity, multi-instance isolation deployment and large-scale concurrent capability are realized.
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