Multi-SIM UE Configuration for Simultaneous RRC Connections
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Solution Overview
Problem
Current Multi-SIM devices face challenges in simultaneously maintaining RRC_CONNECTED mode with multiple networks, leading to underutilization of available resources and potential interference, especially in MR-DC scenarios.
Innovation Solution
A method for Multi-SIM UEs to provide assistance information related to Master Cell Group (MCG) and Secondary Cell Group (SCG) preferences for reduced UE configuration, allowing simultaneous RRC_CONNECTED mode across multiple networks, adapting radio resource configurations to current needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Multi-SIM UE attempts to maintain RRC_CONNECTED mode with multiple networks simultaneously, then the device can communicate with multiple networks at the same time, but the available radio resources are underutilized and interference occurs
Solution Approach 1:
The patent implements dynamic configuration adaptation where the UE monitors its communication state across multiple networks and automatically requests reduced UE configuration when detecting that simultaneous RRC_CONNECTED mode is not optimally supported. The network node dynamically adjusts the configuration based on UE feedback, transitioning between full and reduced configurations to optimize resource utilization while maintaining multi-network connectivity capability.
2Productivity
If a Multi-SIM UE uses reduced UE configuration for Multi-SIMs purposes, then resource utilization improves, but the device complexity and configuration management becomes more complex
Solution Approach 1:
The patent establishes a feedback mechanism where the UE monitors its operational state and communication performance across multiple networks, then provides feedback to the network node about whether reduced UE configuration is beneficial. The network node uses this feedback to automatically adjust the configuration, eliminating the need for complex manual configuration management while optimizing resource utilization based on actual operational conditions.
3Productivity
If the UE provides assistance information about reduced UE configuration preference, then the network can optimize resource allocation, but the signaling overhead increases
Solution Approach 1:
The patent implements a selective feedback approach where the UE provides assistance information about reduced UE configuration preference only in specific scenarios when it detects that such configuration would be beneficial for Multi-SIM operations. Rather than continuously signaling, the UE triggers feedback based on actual operational needs, reducing unnecessary signaling overhead while still enabling the network to optimize resource allocation when it matters most.
Data Source
AI summary
A method performed by a UE (102) having at least two SIMs for simultaneous communication with two or more networks. The UE provides assistance information to a network node, wherein the assistance information is related to a MCG, and/or SCG; and the assistance information indicates a preference for reduced UE configuration for Multi-SIMs purposes.