Multi-SIM RNA Update Coordination via Resume Request
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently handling Radio Access Network (RAN)-based Notification Area Updates (RNAU) for multi-SIM wireless communication devices, particularly in managing RNA updates across multiple subscriber identity modules (SIMs) and avoiding collisions during simultaneous updates.
Innovation Solution
The method involves selecting an active subscriber identity module (SIM) with the best channel qualities and transmitting a resume request message that includes RNA update information for both the active and inactive SIMs. This approach allows for coordinated RNA updates, reducing collisions and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-SIM wireless communication device with a single TX/RX chain monitors only a single wireless network at a time, then the hardware resources are simplified and easier to manage, but the device cannot simultaneously handle communications with multiple networks
Solution Approach 1:
The patent segments the RNA update process into separate handling for different SIMs. Each SIM maintains its own RNA area list and update timing, allowing independent management of multiple network subscriptions without requiring simultaneous active monitoring of all networks.
Solution Approach 2:
The patent implements preliminary actions by pre-configuring RNA area lists for multiple SIMs before actual communication occurs. The device can prepare multiple RNA update schedules in advance and execute them sequentially, enabling multi-network support without simultaneous hardware activation.
2Productivity
If multiple SIMs perform RNA updates simultaneously, then all subscriptions are updated efficiently, but collisions occur during the update process
Solution Approach 1:
The patent segments the RNA update process into separate handling for different SIMs. Each SIM maintains its own RNA area list and update timing, allowing independent management of multiple network subscriptions without requiring simultaneous active monitoring of all networks.
Solution Approach 2:
The patent implements periodic action by establishing different update timing for each SIM based on their respective RNA area configurations. SIMs update at different periodic intervals, preventing simultaneous update collisions while maintaining efficient update cycles for all active subscriptions.
3Reliability
If the device selects a SIM based on best channel qualities, then communication reliability is improved, but the selection process becomes more complex
Solution Approach 1:
The patent implements self-service by having the wireless communication device automatically monitor and evaluate channel qualities for different SIMs without external intervention. The device independently selects the optimal SIM for RNA updates based on real-time channel conditions, eliminating the need for manual configuration or complex external control mechanisms.
Data Source
AI summary
The present disclosure relates to methods and apparatuses. According to some embodiments of the disclosure, a method includes: selecting a first subscriber identity module from a plurality of subscriber identity modules of a user equipment; and transmitting a resume request message via the first subscriber identity module, wherein the resume request message comprises first radio access network (RAN)-based notification area (RNA) update information associated with the first subscriber identity module and second RNA update information associated with a second subscriber identity module of the plurality of subscriber identity modules.