MUSIM Paging Collision Mitigation via DRX Coordination
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Solution Overview
Problem
In wireless communication systems, multi-subscriber identity module (SIM) devices experience collisions and uncoordinated communications, leading to performance degradation and increased power consumption, which negatively impact user experience and battery life.
Innovation Solution
A Multiple Subscriber Identity Module (MUSIM) device determines active SIMs and networks, detects potential collisions, and coordinates communication by prioritizing messages and adjusting paging schedules to mitigate collisions and improve energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a MUSIM device monitors paging schedules for multiple active SIMs concurrently, then the device can maintain communication capabilities for all SIMs, but power consumption increases significantly
Solution Approach 1:
The patent implements discontinuous reception (DRX) cycles where the MUSIM device periodically monitors paging schedules for multiple SIMs instead of continuous monitoring. The device wakes up at specific paging occasions to check for messages and enters sleep mode between occasions, reducing power consumption while maintaining communication capability for all active SIMs
Solution Approach 2:
The network provides advance paging information including paging cause indicators and repetition patterns before the actual paging message is transmitted. This allows the MUSIM device to prioritize which SIMs to monitor based on the urgency and type of expected communication, reducing unnecessary wake-ups and power consumption
2Reliability
If a MUSIM device monitors paging schedules for multiple active SIMs concurrently, then the device can receive messages from all SIMs, but communication collisions occur between transmissions
Solution Approach 1:
The patent segments the monitoring of multiple SIMs into separate time slots by calculating distinct paging occasions for each SIM based on their respective identities and network configurations. This temporal segmentation prevents communication collisions by ensuring that paging messages for different SIMs are received and processed at different times
Solution Approach 2:
The MUSIM device dynamically adjusts its monitoring behavior by prioritizing SIMs based on paging cause indicators and communication urgency. When a high-priority paging message is detected for one SIM, the device can temporarily adjust its monitoring schedule for other SIMs to prevent collisions and ensure critical communications are not missed
3Adaptability or versatility
If the device increases functionality to support multiple SIMs, then communication versatility improves, but battery life decreases
Solution Approach 1:
The patent enables the MUSIM device to support multiple SIMs with different functionality levels by implementing periodic monitoring with DRX cycles. The device can maintain versatility by supporting multiple active SIMs while extending battery life through optimized sleep-wake patterns that reduce the frequency and duration of radio resource monitoring
Solution Approach 2:
The network provides differentiated paging configurations for different SIMs based on their specific requirements and priority levels. The MUSIM device applies different monitoring strategies to different SIMs, with high-priority SIMs receiving more frequent attention and lower-priority SIMs being monitored less frequently, optimizing the balance between versatility and battery life
Data Source
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AI summary
This disclosure relates to systems, apparatuses, and methods for coordinating communication and avoiding and/or mitigating collisions for multi-subscriber identity module devices in a wireless communication system. A wireless device may coordinate communication associated with different subscriber identity modules and/or may mitigate collisions between communications associated with different subscriber identity modules. A network may provide information to improve coordination and/or mitigate collisions. A network may adjust paging schedules and/or provision of alert messages to improve coordination.