Multi-Card UE System Information Sharing for Stable Cell Access
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Solution Overview
Problem
Multi-card user equipment (UE) experiences unstable communications performance due to varying signal quality and access barring states when camping on multiple cells, leading to inefficient resource utilization and reduced connectivity.
Innovation Solution
Implement an information sharing method where a first SIM card shares system information from a second SIM card to control its access decisions, optimizing cell selection and avoiding barred cells, thereby enhancing communication stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-card UE camps on multiple different cells separately, then data transmission capability is improved, but communication stability deteriorates due to varying signal quality and access barring states
Solution Approach 1:
The patent merges the cell selection processes of multiple SIM cards by allowing one SIM card to share obtained system information with another SIM card. This combination approach enables both SIM cards to benefit from the same cell quality assessment, ensuring stable communication performance while maintaining the ability to camp on different cells for data transmission.
2Adaptability or versatility
If each SIM card independently determines cell access state, then autonomy is improved, but resource efficiency deteriorates due to redundant cell state detection
Solution Approach 1:
The patent implements universality by enabling obtained system information to serve multiple purposes and multiple SIM cards simultaneously. One SIM card's cell selection information becomes a universal resource that can guide another SIM card's access decisions, eliminating redundant detection while preserving autonomous operation capabilities.
3Productivity
If SIM cards camp on different cells with time division, then resource utilization is improved, but communication quality deteriorates due to signal quality variations
Solution Approach 1:
The patent applies copying by allowing one SIM card to replicate another SIM card's obtained system information. Instead of each SIM card independently detecting cell states (which may vary in quality), the information from one card is copied and shared, ensuring consistent and reliable communication quality across both cards while maintaining resource utilization benefits.
Data Source
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AI summary
The embodiments of the present application discloses an information sharing method and user equipment, which relate to the field of communication technology and are able to solve the problem that the communication performance of a multi-card UE is unstable when the multi-card UE resides in a plurality of different cells. The specific solution is: acquiring first information by means of a first SIM card, the first information being information sent by a network device of a second SIM card and received by the second SIM card; and controlling the first SIM card according to the first information, wherein the first SIM card and the second SIM card are different SIM cards among at least two SIM cards of the UE. The embodiments of the present application are applied to an information sharing process of at least two SIM cards of a multi-card UE.