Multi-SIM Device Frequency Conflict Avoidance via Measurement Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multi-SIM devices face frequency conflicts when operating with multiple network subscriptions, leading to inefficient use of capabilities and potential performance degradation due to limitations in dual-reception capabilities across different frequency bands.
Innovation Solution
The device determines non-preferred frequencies or cells where simultaneous operation with multiple networks is restricted and transmits this information to the network, allowing for updated measurement configurations that deprioritize these frequencies, thereby reducing the likelihood of frequency conflicts and optimizing handover decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the device performs cell measurements on all configured frequencies, then measurement completeness is improved, but frequency conflicts between multiple networks increase
Solution Approach 1:
The patent applies local quality by differentiating between preferred and non-preferred frequencies in the measurement configuration. The network configures separate measurement object lists for preferred frequencies (where dual-reception is supported) and non-preferred frequencies (where simultaneous operation is restricted). This allows the device to perform measurements with high completeness on preferred frequencies while avoiding frequency conflicts on non-preferred frequencies, thus resolving the contradiction between measurement completeness and conflict avoidance.
2Adaptability or versatility
If the device supports dual-reception on all frequency bands, then network versatility is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the frequency bands into two distinct segments: preferred frequencies where the device supports dual-reception capability, and non-preferred frequencies where simultaneous operation is restricted. The network configures separate measurement object lists for each segment. This segmentation allows the device to maintain dual-reception capability where available while avoiding the complexity of implementing dual-reception across all frequency bands, thus resolving the contradiction between versatility and device complexity.
3Measurement precision
If the network configures measurement objects for all frequencies, then handover decision accuracy is improved, but the likelihood of frequency conflicts increases
Solution Approach 1:
The patent applies local quality by configuring measurement objects with differentiated quality attributes - preferred frequencies are marked as suitable for dual-reception operations while non-preferred frequencies are marked as restricted. The network can then make handover decisions with high accuracy by prioritizing measurements from preferred frequencies, while the separation of preferred and non-preferred frequency lists inherently reduces the likelihood of frequency conflicts. This resolves the contradiction by allowing comprehensive measurement configuration without uniformly increasing conflict likelihood.
Data Source
AI summary
Various example embodiments relate to configuration of an apparatus to avoid frequency conflicts between activities associated with different subscriptions. The apparatus may receive, from a first network, a measurement configuration comprising an indication of a plurality of frequencies or cells for performing cell measurements. The apparatus may determine, from the plurality of frequencies or cells, at least one non-preferred frequency or cell at which simultaneous operation of the apparatus at the first network and at least one second network is restricted, and transmit, to the first network, an indication of the at least one non-preferred frequency or cell. The first network may be reconfigured to deprioritize use of the at least one non-preferred frequency or cell for the apparatus. Apparatuses, methods, and computer programs are disclosed.