Dual-SIM Antenna Switching for Unaligned Slot Continuity
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Solution Overview
Problem
Existing dual SIM designs with virtual dual SIM dual active technology experience transmission interruptions and reduced communication quality due to unaligned slots, necessitating improved slot management to enhance communication efficiency.
Innovation Solution
A dual SIM communication method where SIM cards share a main antenna and diversity antenna, with controlled signal transmission and reception in alternating time periods based on slot alignment, using the main antenna for transmission and diversity antenna for reception in specific time frames to avoid interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If virtual dual SIM dual active technology is used to simplify hardware architecture, then device complexity is reduced, but transmission interruptions occur and communication quality deteriorates due to unaligned slots
Solution Approach 1:
The patent implements dynamic slot alignment adjustment by detecting whether slots of first and second SIM cards are aligned, and dynamically switching between first communication mode (when aligned) and second communication mode (when not aligned). This dynamic adaptation resolves the contradiction by maintaining communication quality through real-time mode selection while preserving the simplified hardware architecture of virtual dual SIM dual active technology.
Solution Approach 2:
The patent changes communication parameters by switching between different communication modes based on slot alignment status. When slots are not aligned, the system transitions from a first communication mode to a second communication mode, adjusting timing and resource allocation parameters to eliminate transmission interruptions. This parameter adaptation maintains communication quality without requiring additional hardware complexity.
2Device complexity
If time division multiplexing is used for slot management, then device complexity is reduced, but transmission continuity deteriorates due to complete interruption in some slot periods
Solution Approach 1:
The patent implements dynamic slot management by detecting slot alignment status and dynamically adjusting communication modes. When slots are misaligned, the system dynamically switches to a second communication mode that prevents complete transmission interruptions, thereby maintaining transmission continuity while preserving the simplicity of time division multiplexing slot management.
Solution Approach 2:
The patent ensures continuous useful action by implementing a second communication mode that prevents complete transmission interruptions in downlink slots. This mode allows the terminal to continuously receive downlink data without full interruptions, maintaining transmission continuity while keeping the slot management structure simple through time division multiplexing.
Data Source
AI summary
A dual Subscriber Identity Module (SIM) communication method and apparatus for a terminal, a device, and a storage medium are provided. The method includes: determining whether slots of dual SIM cards are aligned. The method further includes when the slots of the dual SIM cards are not aligned, within an uplink slot of a second SIM card, controlling the second SIM card to transmit a signal by using a main antenna; for an odd-numbered downlink slot of the second SIM card, controlling the second SIM card to receive a signal by using a diversity antenna within the entire odd-numbered downlink slot, and controlling a first SIM card to transmit a signal by using the main antenna in a preceding time period within the odd-numbered downlink slot and to receive a signal by using the main antenna in a later time period within the odd-numbered downlink slot.