Multi-SIM Paging Reception via Dynamic Time Slot Switching
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Solution Overview
Problem
In conventional multi-card multi-standby cell phone systems, non-traffic SIM cards cannot receive paging information when the traffic card is in use, making it difficult to identify incoming service for these cards.
Innovation Solution
A method and apparatus that acquire free time information of a traffic card and occupation time information for a non-traffic card, allowing the non-traffic card to receive paging information on free time slots without conflicting with the traffic card's usage, using conflict detection and control units to manage the receipt of this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a multi-card multi-standby system uses only one communication unit to reduce cost and power consumption, then device complexity and power consumption are reduced, but paging information reception for non-traffic cards is lost
Solution Approach 1:
The system dynamically switches the communication unit between monitoring traffic card channels and non-traffic card paging channels based on real-time needs. The control unit activates the communication unit to monitor non-traffic card paging information only when the traffic card is not actively transmitting, creating a dynamic time-sharing arrangement that reduces power consumption while ensuring paging information is not lost.
Solution Approach 2:
The system changes the operational parameters of the communication unit by switching between different frequency channels and time slots. During traffic card activity, the communication unit operates on traffic card frequencies; during idle periods, it switches to monitor non-traffic card paging channels, thereby capturing paging information without requiring continuous operation on all channels simultaneously.
2Loss of information
If the communication unit monitors paging information for non-traffic cards during traffic card idle time, then paging information reception for all cards is improved, but time slot conflicts may occur
Solution Approach 1:
The control unit continuously monitors the status of the traffic card and provides feedback to determine when to switch the communication unit to monitor non-traffic card paging information. When the traffic card enters an idle state, the control unit activates monitoring of non-traffic card paging channels, and when traffic card activity is detected, it switches back, thereby avoiding time slot conflicts through real-time feedback control.
Solution Approach 2:
The system performs preliminary switching of the communication unit to monitor non-traffic card paging channels only after confirming the traffic card has entered an idle state. This preliminary action ensures that the communication unit is positioned to capture paging information without interfering with ongoing traffic card operations, preventing time slot conflicts before they occur.
Data Source
AI summary
A method for receiving paging information, including acquiring free time information of a traffic card and occupation time information for receiving paging information of a non-traffic card; and when occupation time for receiving paging information of the non-traffic card is not in conflict with free time of the traffic card, receiving paging information of the non-traffic card on the free time. Based on the above method, an apparatus for receiving paging information is provided. Paging information of a non-traffic card can be received when the traffic card is in traffic, which helps identify if the non-traffic card has incoming service (i.e. incoming traffic).