Dual SIM Resource Controller Paging Overlap Mitigation

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Solution Overview

Problem

Conventional dual SIM dual standby devices face partial paging overlap issues due to independent discontinuous reception cycles, leading to missed paging opportunities as they randomly select SIMs for signal reception, resulting in inefficient page processing.

Innovation Solution

A dual SIM resource controller schedules a first paging preparation period for one SIM before a second SIM's preparation period when a partial overlap is anticipated, and reattempts RF requests if initial requests are denied, ensuring both SIMs can process pages without overlap.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a conventional paging process randomly selects one SIM for paging signal reception during partial paging overlap, then device complexity is reduced, but paging reliability deteriorates as one SIM always misses paging opportunities

Engineering Contradiction:

Improvepaging process complexityVSAvoidpaging signal reception reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The system performs preliminary detection of paging overlap conditions between two SIMs before the actual paging reception. When overlap is detected, the system proactively adjusts the paging preparation period timing to avoid conflict, rather than reactively handling the conflict after it occurs. This preliminary action ensures both SIMs can reliably receive paging signals without requiring complex real-time arbitration mechanisms.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the system adjusts paging preparation period timing to mitigate partial paging overlap, then paging reliability improves, but device complexity increases due to additional scheduling control

Engineering Contradiction:

Improvepaging signal reception reliabilityVSAvoidpaging scheduling control complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system dynamically adjusts the paging preparation period timing based on detected overlap conditions between SIMs. The dual SIM resource controller modifies the timing of paging preparation periods in response to changing conditions, allowing the system to adapt its scheduling without requiring a completely complex static scheduling structure. This dynamic approach balances reliability improvement with manageable complexity.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If independent DRX cycle configurations are used for different SIMs, then adaptability to different network conditions improves, but partial paging overlap occurs leading to missed paging opportunities

Engineering Contradiction:

ImproveDRX cycle configuration adaptabilityVSAvoidpaging signal reception reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The dual SIM resource controller acts as an intermediary between the independent DRX cycle configurations of two SIMs and the paging reception process. It monitors the paging preparation periods of both SIMs, detects potential overlaps, and coordinates timing adjustments to eliminate conflicts. This intermediary function allows each SIM to maintain its independent DRX configuration for adaptability while ensuring reliable paging reception for both SIMs.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11470681B2Apparatus and method for paging overlap mitigation

Publication Date: 2022.10.11 SAMSUNG ELECTRONICS CO LTD

AI summary

An apparatus and a method. The apparatus includes a first SIM, a second SIM, a dual SIM resource controller (DSRC), and a radio frequency (RF) communication entity. The DSRC is configured to schedule a first paging preparation period of the first SIM prior to a second paging preparation period of the second SIM, when an initial RF request for the RF communication entity is granted, and it is determined that a partial paging overlap will occur between the first SIM and the second SIM.