Semi-Flexible Gap Allocation for Multi-SIM RRM Measurement Synchronization
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing gap patterns for multi-SIM devices, particularly in allocating measurement gaps for RRM measurements and ensuring synchronization between idle and connected modes, which affects measurement performance and resource allocation.
Innovation Solution
The system transmits a message to a base station associated with a universal subscriber identity module requesting a gap pattern with a gap offset shift factor or selecting a gap offset from a set of options, allowing for semi-flexible gap allocation and sharing between different subscriber identity modules, enabling efficient gap management and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed gap pattern is allocated for RRM measurements in multi-SIM devices, then measurement synchronization between idle and connected modes is ensured, but measurement performance and resource utilization are degraded due to inability to adapt to different scenarios
Solution Approach 1:
The patent implements dynamic gap pattern allocation by allowing the network to configure multiple gap patterns with different offset values and enabling the UE to indicate preferred gap patterns based on current operational conditions. This transforms the static gap allocation into a dynamic system that can adapt to different measurement scenarios while maintaining synchronization requirements.
Solution Approach 2:
The patent changes the gap pattern parameters by introducing multiple configurable offset values (e.g., offset 0, offset 1, offset 2) and allowing the network to select appropriate patterns based on traffic conditions, measurement requirements, and SIM card states. This parameter flexibility resolves the contradiction between fixed synchronization and adaptive performance.
2Reliability
If gap patterns are separately allocated for each SIM card, then measurement requirements of individual SIMs are met, but resource efficiency deteriorates due to duplicate gap allocations
Solution Approach 1:
The patent merges the gap allocation mechanisms for multiple SIM cards into a unified network-controlled process. The network evaluates the measurement requirements of both SIMs and configures a single gap pattern that satisfies both requirements simultaneously, eliminating duplicate gap allocations. The UE indicates its gap preferences through a unified message structure that considers both SIM cards' needs.
Solution Approach 2:
The patent creates a universal gap pattern configuration mechanism that serves multiple SIM cards simultaneously. The configured gap pattern can be applied to both SIMs or selectively to specific SIMs based on current operational needs, making the gap allocation system multi-functional and adaptable to different SIM card states and measurement requirements.
3Adaptability or versatility
If the network has full control over gap pattern configuration, then resource allocation flexibility is improved, but device autonomy and adaptability to specific measurement needs are reduced
Solution Approach 1:
The patent implements a feedback mechanism where the UE evaluates its own measurement requirements and preferred gap patterns, then communicates these preferences to the network through a dedicated indication message. The network uses this feedback to make informed configuration decisions, balancing network resource management with device-specific measurement needs. This two-way communication resolves the contradiction between centralized control and device autonomy.
Data Source
AI summary
Disclosed is a method comprising transmit, to a first base station associated with a first universal subscriber identity module, a first message indicating a request for a gap pattern for a second universal subscriber identity module, wherein the first message indicates at least a gap offset shift factor and/or a request for selecting a gap offset for the gap pattern from a plurality of gap offsets indicated in the first message, wherein the gap offset shift factor indicates an allowed shift to a start time of the gap pattern.