Multi-SIM Device Authentication via Radio Link Stability
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Solution Overview
Problem
Multi-SIM, multi-standby communication devices face challenges in successfully authenticating with virtual SIM networks due to the shared RF resource configuration, leading to potential radio link failures and repeated authentication attempts, especially when the device tunes away from the active subscription to obtain an authentication response from a remote server.
Innovation Solution
Implementing methods on the multi-SIM, multi-standby communication device to respond to acknowledgement requests from the virtual SIM network by introducing a delay or using an interface between the radio resource management layer and the radio link control layer to ensure pending acknowledgement responses are transmitted before switching to the second subscription, thereby preventing premature connection release and enhancing authentication success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device tunes away from the active subscription to obtain authentication response from a remote server, then authentication capability is improved, but radio link stability deteriorates
Solution Approach 1:
The patent applies preliminary action by sending an acknowledgement response before actually tuning away to the second subscription. This acknowledges the authentication request from the virtual SIM network in advance, ensuring the radio link remains stable while the device switches subscriptions to obtain the authentication response from the remote server.
2Stability of the object's composition
If the device responds to acknowledgement requests before tuning away, then radio link stability is maintained, but authentication processing time increases
Solution Approach 1:
The patent applies skipping by rapidly switching from the first subscription to the second subscription after sending the acknowledgement response. This minimizes the time the RF resource is occupied with the first subscription while ensuring the radio link stability requirement is met, thus reducing overall authentication processing time.
Data Source
AI summary
Various examples for performing remote authentication of a virtual subscriber identity module (SIM) on a multi-SIM, multi-standby communication device include receiving, on a first subscription of the multi-SIM, multi-standby communication device, an authentication request from a virtual SIM network. The multi-SIM, multi-standby communication device may respond to one or more acknowledgement requests sent from the virtual SIM network to the first subscription before tuning from the first subscription to a second subscription of the multi-SIM, multi-standby communication device to send the authentication request to a remote server. Upon receipt of the authentication response from the remote server through the second subscription, the multi-SIM, multi-standby communication device may send the authentication response to the virtual SIM network through the first subscription.