Multi-SIM RF Resource Allocation via Dynamic Paging Patterns
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Solution Overview
Problem
Multi-SIM devices face challenges in efficiently allocating radio frequency (RF) resources, leading to collisions and reduced throughput, as multiple SIMs share RF resources, causing one SIM to miss paging signals and impacting call performance.
Innovation Solution
A method and apparatus for determining and allocating RF resources based on the data communication state of one SIM in connected mode and the received signal state of another SIM in idle mode, using a processor to generate paging patterns and allocate resources to avoid collisions and ensure minimum call performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If RF resources are shared among multiple SIMs, then device complexity is reduced, but collisions occur and paging signals are missed
Solution Approach 1:
The RF resources are segmented into different time slots for different SIMs. The base station allocates specific time periods to each SIM for monitoring paging channels, ensuring that multiple SIMs can share the same RF resources without collision. This segmentation resolves the contradiction by maintaining simple shared hardware while ensuring reliable paging reception through temporal separation.
Solution Approach 2:
The system implements periodic allocation of RF resources to different SIMs in a cyclic manner. Each SIM is assigned specific time periods periodically to monitor its paging channel, creating a structured schedule that prevents collisions while allowing continuous operation. This periodic action ensures that each SIM receives dedicated attention at regular intervals without requiring complex permanent allocations.
2Reliability
If RF resources are allocated to one SIM at a time, then collisions are avoided, but throughput for connected mode SIM is reduced
Solution Approach 1:
The RF resource allocation is made dynamic rather than static. The base station can adjust the time period allocations for different SIMs based on their current operational states. When a SIM is in connected mode requiring high throughput, its allocation can be optimized to minimize interruptions. This dynamic adjustment resolves the contradiction by adapting resource allocation to current needs rather than using fixed assignments.
Solution Approach 2:
The system changes the time period parameter allocations for different SIMs based on their operational requirements. For SIMs in connected mode, longer continuous time periods are allocated to maintain high data throughput, while SIMs in idle mode receive periodic allocations sufficient for paging monitoring. This parameter adjustment resolves the contradiction by tailoring resource allocation duration to each SIM's current state.
3Reliability
If multiple SIMs monitor paging channels simultaneously, then paging reception is ensured, but power consumption increases
Solution Approach 1:
Instead of continuous monitoring, each SIM monitors the paging channel periodically at allocated time periods. During non-allocated periods, the RF resources are released or put to sleep, significantly reducing power consumption. This periodic monitoring approach ensures that paging signals are received reliably at scheduled intervals while minimizing energy usage during idle periods between monitoring cycles.
Solution Approach 2:
The system maintains continuous coverage for all SIMs by ensuring that each SIM has allocated time periods where it can monitor paging channels without interruption. During these allocated periods, the SIM continuously monitors for paging signals, ensuring reliable detection. The continuity is maintained within each allocated time slot while allowing gaps between slots to reduce overall power consumption compared to uninterrupted continuous monitoring.
Data Source
AI summary
Method, device, and chip for allocating radio frequency (RF) resources by a multi-subscriber identification module (SIM) including at least a first SIM and a second SIM. The method includes determining a frequency of RF resource allocation to the second SIM based on at least one of a data communication state of the first SIM in a connected mode and a received signal state of the second SIM in an idle state, and allocating the RF resources to the second SIM based on the frequency of the RF resource allocation.