SIM/eSIM Switching Circuits for Multi-Number Standby
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Solution Overview
Problem
Existing electronic devices with Dual SIM Dual Standby (DSDS) functionality are limited to two SIM card functions, failing to meet the increasing needs of users who require multiple mobile phone numbers or communication operator numbers, and the internal space and hardware design of mobile phones restrict further expansion of SIM card capabilities.
Innovation Solution
A communication system with a processing chip and two sets of communication circuits, each including a switch circuit, SIM card port circuit, and eSIM circuit, allowing simultaneous standby of multiple SIM cards and eSIMs without increasing card slot space or altering the underlying chip structure, using a switch circuit to control connections and a voltage transformer circuit to accommodate various SIM card types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Dual SIM Dual Standby (DSDS) functionality is implemented, then two SIM card functions are supported, but the internal space and hardware design restrict further expansion of SIM card capabilities
Solution Approach 1:
The communication circuit is designed to support multiple SIM card types (physical SIM and eSIM) through a unified architecture. The switch circuit can dynamically connect different SIM card interfaces to the same communication circuit, enabling one communication circuit to serve multiple SIM functions without requiring separate dedicated circuits for each SIM type.
Solution Approach 2:
The patent introduces a dynamic switching mechanism that allows the communication circuit to adaptively connect to different SIM card interfaces based on operational needs. The switch circuit can dynamically reroute signals between physical SIM card interfaces and eSIM interfaces, providing flexible and adaptive SIM card functionality expansion.
2Adaptability or versatility
If multiple SIM card interfaces are added to support more SIM functions, then SIM card capability is expanded, but card slot space increases
Solution Approach 1:
The communication circuit serves as a universal interface that can handle multiple SIM card types. By using the same communication circuit for both physical SIM and eSIM interfaces through dynamic switching, the patent avoids the need for separate dedicated communication circuits for each SIM type, thereby saving card slot space while maintaining expanded SIM functionality.
Solution Approach 2:
The patent implements eSIM (embedded SIM) technology as a virtual or digital copy of the traditional physical SIM card. This allows SIM card functionality to be stored and accessed electronically without requiring physical card slots, effectively reducing the need for additional physical space while maintaining multiple SIM capabilities.
3Ease of operation
If switch circuit is used to control connections between communication interfaces and SIM card circuits, then connection flexibility is improved, but circuit complexity increases
Solution Approach 1:
The switch circuit implements dynamic connection control, allowing the system to adaptively route signals between different SIM card interfaces and the communication circuit based on operational requirements. This dynamic switching capability provides connection flexibility while managing circuit complexity through intelligent resource allocation.
Solution Approach 2:
The switch circuit acts as an intermediary component that mediates between multiple SIM card interfaces and the single communication circuit. By introducing this intermediate switching layer, the patent achieves flexible connection management without requiring direct complex wiring between each SIM interface and the communication circuit, thereby controlling overall circuit complexity.
Data Source
AI summary
A communication system and an electronic device are provided. The communication system includes a processing chip and two sets of communication circuits, each set of the communication circuit includes a switch circuit, a SIM card port circuit and at least one eSIM circuit, the switch circuit includes a first terminal and at least two second terminals, in which the first terminal is connected to a communication interface of the processing chip, the at least two second terminals are respectively connected to the SIM card port circuit and the at least one eSIM circuit in one-to-one correspondence, and the first terminal of the switch circuit is switched to be connected with each second terminal.