Dual-SIM Network Switching Resource Timing to Reduce Resource Waste
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Solution Overview
Problem
In dual-card mobile phones, activities of one SIM card in a different network can cause interruptions in the primary network, leading to unnecessary resource waste and incorrect wireless link recovery mechanisms in the primary network.
Innovation Solution
A method and device for determining and configuring network switching resources by exchanging system time and reference information between SIM cards and networks to optimize time domain resources for seamless switching between operator networks, reducing unnecessary disconnections and resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal performs activities in the second operator network through SIM card 2, then the terminal can maintain communication with operator B's network, but the terminal will interrupt activities in the first operator network and cause resource waste
Solution Approach 1:
The terminal performs preliminary actions by acquiring system time information and time reference information from the second operator network before switching occurs. This advance preparation allows the terminal to notify the first operator network of upcoming switching activities, enabling the first network to proactively suspend resource allocation rather than reacting after interruption has occurred, thus preventing resource waste while maintaining multi-network capability
2Reliability
If the first operator network increases power or triggers wireless link recovery mechanism, then the network attempts to recover connection, but the terminal is still performing activities in the second operator network and cannot recovery, leading to invalid operation
Solution Approach 1:
The terminal implements feedback by transmitting system time information and time reference information to the first operator network. This feedback mechanism allows the first network to understand the terminal's actual state (engaged with second network) and avoid triggering invalid recovery operations. The feedback creates a closed-loop communication where the network can make informed decisions about whether to initiate recovery procedures, eliminating wasted energy on futile recovery attempts
3Reliability
If the first operator network determines there is a problem with communication connection, then the network increases power to maintain connection, but this causes resource waste since the interruption is due to network switching
Solution Approach 1:
The terminal performs preliminary notification by transmitting system time information and time reference information to the first operator network before the switching interruption occurs. This allows the first network to recognize the interruption as intentional network switching rather than connection failure, preventing the network from mistakenly increasing power in response to what it would otherwise interpret as a connection problem, thus avoiding resource waste while maintaining connection stability
Data Source
AI summary
Provided is a method for determining a network switching resource, including: acquiring second system time information for performing activities in a second operator network and time reference information for performing activities in the second operator network; transmitting the second system time information and time reference information to a first operator network; receiving configuration information generated by the first operator network at least according to the second system time information and/or the time reference information; according to the configuration information, determining a time domain resource on which a terminal is disconnected from the first operator network and performs activities in the second operator network.