Dual SIM Data Session Switching via URSP Rules
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Solution Overview
Problem
Current 5G mobile communication systems lack an efficient method to switch data sessions between dual SIMs in a user equipment (UE) based on User Equipment Route Selection Policy (URSP) rules, which are essential for managing network slices and ensuring optimal service performance for applications.
Innovation Solution
A method and system for switching a data session in a 5G network by a User Equipment (UE) with dual SIM, where a User Equipment Route Selection Policy (URSP) rule determines whether to switch the data session from a primary SIM to a secondary SIM based on triggers such as a dedicated network slice, matching traffic descriptor, Quality of Service (QoS) rules, or user preference, allowing for enhanced connectivity and service continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data session switching between dual SIMs is implemented in 5G network, then network resource utilization and service continuity are improved, but system complexity and configuration management difficulty increase
Solution Approach 1:
The system pre-configures URSP rules with multiple descriptors (network slice, traffic descriptor, QoS parameters) that define switching conditions in advance. When a data session needs switching, the UE evaluates these pre-defined rules and triggers switching based on matching conditions, avoiding complex real-time decision-making and reducing system complexity while ensuring service continuity
Solution Approach 2:
The system implements a feedback mechanism where the UE continuously monitors data session performance metrics (throughput, latency, network conditions) and compares them against configured thresholds in URSP rules. This feedback loop enables automatic triggering of data session switching when performance degradation is detected, maintaining service reliability without requiring manual intervention or complex control logic
2Measurement precision
If multiple URSP rules with different descriptors are configured for dual SIMs, then data session switching accuracy and service optimization are improved, but rule configuration complexity and processing overhead increase
Solution Approach 1:
The URSP rule structure is segmented into multiple independent descriptors (network slice descriptor, traffic descriptor, QoS descriptor) that can be configured separately. Each descriptor evaluates a specific aspect of the data session (network slice compatibility, traffic pattern matching, QoS requirements), allowing the system to achieve high switching accuracy through multi-criteria evaluation while keeping the configuration process modular and manageable
Solution Approach 2:
The system evaluates multiple descriptors in parallel when determining whether to trigger a data session switch. Even though not all descriptors may be equally critical for every switching scenario, the system performs comprehensive evaluation of all configured descriptors to ensure accurate switching decisions. This excessive evaluation approach guarantees switching accuracy while the modular descriptor structure keeps configuration complexity manageable
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. For example, the disclosure relates to a method for switching a data session for an application, implemented in a user equipment with dual SIM. The method includes: determining a User Equipment (UE) Route Selection Policy (URSP) rule for a primary Subscriber Identity Module (SIM) and a secondary SIM. The method includes detecting a trigger for switching the data session of the application to the secondary SIM based on determination of the URSP rule, wherein the trigger includes one of a matching traffic descriptor, a dedicated network slice, a Quality of Service (QoS) rule and a user preference. The method includes configuring the secondary SIM for the DDS based on the trigger; and switching the data session of the application to the secondary SIM for continuing the data session.