Time Domain Configuration for Dual-SIM Network Switching
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Solution Overview
Problem
In wireless communication systems with multiple SIM cards, terminals often experience incorrect network guidance and link failures when switching between networks, leading to resource wastage and disruptions in data statistics and algorithms.
Innovation Solution
A time domain configuration method where the network determines and sends time domain configuration information to the terminal, allowing it to operate correctly in a secondary network registered by a second SIM card, avoiding autonomous terminal operations that cause misguidance and link failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal carries out autonomous operation based on terminal manufacturer's implementation when switching between networks, then the terminal can access the second network for communication services, but it leads to wrong guidance by the network on the control algorithm and may cause wireless link failure
Solution Approach 1:
The network side performs preliminary configuration by determining and sending time domain configuration information to the terminal before the terminal autonomously accesses the second network. This preliminary action provides the terminal with correct time domain parameters (such as uplink-downlink configuration, special subframe configuration) in advance, preventing wrong network guidance and control algorithm errors during network switching, thus resolving the contradiction between network switching capability and communication link stability
Solution Approach 2:
The network side actively sends time domain configuration information to the terminal based on the terminal's network switching behavior. This feedback mechanism ensures the terminal receives accurate time domain parameters from the network rather than relying solely on autonomous operation, thereby maintaining communication link stability while enabling network switching
2Ease of operation
If the terminal autonomously accesses the second network, then communication services can be operated, but it triggers recovery mechanisms and disturbs data statistics and related algorithms of the network
Solution Approach 1:
The network side determines and sends time domain configuration information to the terminal before the terminal autonomously accesses the second network. This preliminary configuration ensures the terminal operates with correct time domain parameters, preventing abnormal network responses and triggering of recovery mechanisms, thereby maintaining accurate data statistics and network algorithms while enabling communication service operation
3Measurement precision
If the network sends time domain configuration information to the terminal, then accurate communication status clarification is achieved, but it requires additional network processing and signaling
Solution Approach 1:
The network side changes the approach from autonomous terminal operation to network-controlled parameter configuration by determining and sending time domain configuration information. This parameter change provides accurate communication status clarification through explicit time domain parameters (uplink-downlink configuration, special subframe configuration) while the complexity is managed through standardized signaling procedures in the network switching protocol
Data Source
AI summary
The present disclosure provides a time domain configuration method, which includes: obtaining, by a terminal, time domain configuration information from a first network registered by a first SIM card in the terminal. The time domain configuration information includes time domain information used by the terminal for operating in a second network registered by a second SIM card.