Dual-SIM DRX Timing for Non-Conflicting RF Chain Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices with multiple SIM cards often experience missed communications and device unavailability due to conflicting transmission patterns when attempting to communicate with multiple core networks simultaneously.
Innovation Solution
Implementing a transceiver with RF circuitry supporting two or more SIM cards and assigning distinct paging cycles to each SIM card to define when each card operates in transmission or reduced power modes, reducing conflicts and ensuring simultaneous communication with multiple core networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SIM cards are installed in the same electronic device to communicate with multiple core networks, then communication versatility is improved, but transmission conflicts and device unavailability occur
Solution Approach 1:
The patent implements discontinuous reception (DRX) cycles with alternating active and inactive periods for each SIM card. Each SIM card operates in periodic transmission patterns where it alternates between being available for communication and being in a reduced power state. This periodic action allows multiple SIM cards to share the same RF chain without continuous conflict, as each card is active only during its designated time windows.
Solution Approach 2:
The system dynamically switches between different SIM cards based on timing parameters and communication needs. The electronic device can flexibly adjust which SIM card is active at any given moment, switching between SIM cards during their respective active periods. This dynamic allocation of the RF chain to different SIM cards based on time-multiplexing resolves the conflict between supporting multiple networks and maintaining device availability.
2Use of energy by moving object
If a first SIM card is active while a second SIM card is deactivated, then power consumption is reduced, but missed communications occur
Solution Approach 1:
Each SIM card is configured with DRX parameters that define periodic active windows during which the card can receive communications. During these periodic active windows, the corresponding SIM card is activated to monitor for incoming communications. Between these windows, the SIM card remains deactivated to conserve power. This periodic activation ensures that power is consumed only when necessary for each SIM card.
Solution Approach 2:
The system pre-configures non-conflicting DRX timing parameters for each SIM card before operation begins. These preliminary timing configurations ensure that the active periods of different SIM cards do not overlap, allowing the device to efficiently switch between cards without conflict. This preliminary setup enables predictable power management while ensuring each SIM card is available to receive communications during its designated windows.
Data Source
AI summary
An electronic device discussed herein may communicatively couple to a base station. The base station may receive a first paging cycle assignment corresponding to a first subscriber identification module (SIM) card and determine a second paging cycle assignment for use with a second SIM card. The second paging cycle assignment may be generated based on the first paging cycle assignment. The base station may communicate with the electronic device using the second paging cycle assignment. The second paging cycle assignment may guide the base station to transmit data to the electronic device without interrupting a transmission made according to the first paging cycle assignment.