Dual-SIM Connection Control to Prevent Simultaneous Network Loss
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Solution Overview
Problem
In multi-card terminals, communication conflicts between SIM cards can lead to both SIM cards losing their connections with base stations, disrupting overall communication efficiency.
Innovation Solution
A method where the second SIM card sends request information to the network-side device to adjust the first SIM card to a non-connected state when establishing a connection with a second network-side device, ensuring at least one SIM card maintains a connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first SIM card requests the first base station to disconnect the communication connection to ensure the second SIM card can communicate with the second base station, then the second SIM card can establish communication connection, but the first SIM card loses connection before the second SIM card establishes connection, resulting in neither SIM card having communication connection
Solution Approach 1:
The second SIM card sends request information to the network-side device in advance, before actually needing to establish communication, to adjust the first SIM card to non-connected state. This preliminary action ensures that when the second SIM card establishes connection, the first SIM card is already in non-connected state, avoiding the race condition where both cards lose connection simultaneously.
2Adaptability or versatility
If the first SIM card requests the first base station to disconnect the communication connection, then the second SIM card can communicate with the second base station, but both SIM cards may lose connection simultaneously causing communication interruption
Solution Approach 1:
The network-side device acts as an intermediary that receives request information from the second SIM card and sends connection release signaling to the first SIM card. This intermediary mechanism ensures coordinated state adjustment between multiple SIM cards, maintaining continuous communication availability by preventing simultaneous disconnection of all SIM cards.
3Adaptability or versatility
If the first SIM card requests the first base station to disconnect the communication connection, then the second SIM card can establish connection, but the complexity of connection management increases due to coordination requirements
Solution Approach 1:
The second SIM card autonomously sends request information to the network-side device to adjust the first SIM card's state, without requiring complex coordination protocols between SIM cards. This self-service approach simplifies connection control by allowing each SIM card to independently manage state transitions, reducing overall system complexity while maintaining multi-card communication capability.
Data Source
AI summary
A method for connection control is performed by a terminal provided with a first Subscriber Identity Module (SIM) card and a second SIM card, and the method includes: determining that a communication connection with a second network-side device is established by the second SIM card during communication between the first SIM card and a first network-side device, wherein the second network-side device is same as or different from the first network-side device; and sending request information to the second network-side device by the second SIM card, wherein the request information is configured to adjust the first SIM card from a connected state to a non-connected state.