Multi-SIM Terminal RF Resource Allocation for Real-Time Service Continuity
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Solution Overview
Problem
In multi-SIM card mobile terminals, the secondary SIM card often preempts radio frequency resources, leading to stalling issues with real-time services like online gaming and video streaming, as it occupies resources needed by the primary SIM card.
Innovation Solution
The method involves detecting the service mode of the primary SIM card and reducing the proportion of RF resources occupied by the secondary SIM card by adjusting parameters such as out-of-service network search intervals, search frequency bands, inter-system measurement periods, and background searches, ensuring exclusive resource occupation by the primary SIM card during real-time services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the secondary SIM card occupies RF resources for network search and measurement, then the secondary SIM card can maintain network connectivity and receive services, but the primary SIM card experiences service stalling due to insufficient RF resources
Solution Approach 1:
The patent dynamically adjusts the RF resource allocation between primary and secondary SIM cards based on service requirements. When real-time services are detected on the primary SIM card, the system dynamically modifies the secondary SIM card's network search interval, measurement period, and background search behavior to reduce resource conflicts, ensuring primary service continuity while maintaining secondary card functionality
Solution Approach 2:
The patent changes key parameters of the secondary SIM card's RF resource usage including increasing the out-of-service network search interval, extending inter-system measurement periods, adjusting intra-frequency measurement intervals, and modifying background search frequency bands. These parameter adjustments reduce the secondary card's RF resource occupation to prevent primary card service stalling
2Adaptability or versatility
If the terminal allocates equal RF resources to both SIM cards, then both cards can independently perform network search and measurement, but real-time services on the primary SIM card experience stalling
Solution Approach 1:
The patent segments RF resource allocation between the two SIM cards based on service types. The primary SIM card receives prioritized RF resources during real-time service periods, while the secondary SIM card operates with reduced resource allocation. This segmentation resolves the conflict between multi-SIM versatility and real-time service stability by creating differentiated resource access patterns
Solution Approach 2:
The system dynamically switches RF resource allocation modes depending on the service state of the primary SIM card. When real-time services are active, the secondary SIM card's resources are curtailed; when real-time services are inactive, normal resource allocation resumes. This dynamic adjustment maintains both multi-SIM adaptability and real-time service reliability
3Speed
If the secondary SIM card performs frequent network search and measurement, then the secondary SIM card can quickly respond to network changes, but the primary SIM card's real-time service quality deteriorates
Solution Approach 1:
The patent implements periodic action by adjusting the secondary SIM card's network search and measurement to occur at extended intervals rather than continuously. The out-of-service network search interval is increased, inter-system measurement periods are extended, and background search frequency is reduced. This periodic approach allows the secondary card to respond to network changes at acceptable intervals while preventing real-time service quality deterioration
Data Source
AI summary
A method related to the field of mobile communications technologies and for processing radio frequency resources includes detecting, by a terminal, a service mode of a first service that uses a primary subscriber identification module (SIM) card, where the service mode includes a real-time service mode and a non-real-time service mode, and reducing, by the terminal, a proportion of radio frequency (RF) resources occupied by a secondary SIM card when the service mode of the first service is the real-time service mode, where the primary SIM card is a card for performing the real-time service mode, and the secondary SIM card is a card, other than the primary SIM card, in a multi-SIM multi-standby terminal.