Multi-SIM Paging Restriction for RF Tune-Away Control
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Solution Overview
Problem
In dual-SIM devices, frequent RF tune-aways between SIMs lead to high power consumption, device overheating, and interruption of critical applications due to periodic paging on non-primary SIMs, causing poor user experience and battery drain.
Innovation Solution
Implementing a paging restriction mechanism in multi-SIM user equipment (UE) that enables restrictions on secondary SIMs based on trigger conditions, using timers to manage RF resources efficiently, and communicating with the network to limit paging requests during critical scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If RF tune-away is implemented to monitor paging on non-active SIM, then mobile terminating services can be received on both SIMs, but service interruption and latency increase on the active SIM
Solution Approach 1:
The system performs preliminary actions by detecting trigger conditions (critical applications running, data sessions active) before RF tune-away occurs, and proactively applies paging restrictions to prevent service interruption rather than recovering from it afterward
Solution Approach 2:
The paging restriction configuration is made dynamic through timer-based management, where restrictions are applied temporarily only when trigger conditions are met and automatically removed after timer expiry, allowing the system to adapt between service reception and service continuity needs
2Reliability
If frequent RF tune-away between SIMs is performed, then paging monitoring is maintained on both SIMs, but power consumption increases and device overheating occurs
Solution Approach 1:
Instead of continuous or frequent periodic paging monitoring that causes overheating, the system implements conditional periodic monitoring only when trigger conditions are not met, reducing RF tune-away frequency while maintaining essential paging monitoring capabilities
Solution Approach 2:
The device autonomously monitors its own operational state (critical applications, data sessions) and self-regulates RF tune-away behavior based on internal conditions, applying paging restrictions when critical services are detected without external control
3Reliability
If paging restriction is applied to non-dedicated SIM, then critical applications experience fewer interruptions, but mobile terminating service reception is blocked
Solution Approach 1:
The paging restriction is implemented dynamically with automatic activation when critical applications are detected and automatic deactivation after timer expiry, allowing the system to switch between service reception and service continuity modes based on real-time conditions
Solution Approach 2:
The system detects trigger conditions in advance (critical applications running, data sessions active) and applies paging restrictions proactively before service interruption occurs, rather than reacting after interruption happens
Data Source
AI summary
An example a method for managing paging restrictions in a wireless network includes detecting, by a UE, whether a first subscriber identity module (SIM) is configured for a dedicated data subscription (DDS). The method further includes detecting, by the UE, an occurrence of a trigger condition in connection with at least one of the first SIM and at least one second SIM and enabling, by the UE, a paging restriction to the at least one second SIM based on the occurrence of the predetermined trigger condition.