Multi-SIM UE DRX Collision Management via Network Feedback
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Solution Overview
Problem
In multi-SIM user equipment (UE) operations, existing systems face issues with resource management and data connection drops due to collisions during idle/inactive modes, leading to inefficient RF resource usage and incorrect radio quality perception by the network.
Innovation Solution
The UE and network collaborate to manage multi-SIM operations by exchanging information about potential collisions and adjusting DRX configurations, allowing the UE to request retransmissions with the same redundancy version and requesting gaps in transmission/reception to perform idle/inactive activities on other SIMs, thereby optimizing resource usage and preventing data drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE performs idle/inactive activities on one SIM, then the UE can maintain connectivity with multiple networks, but data connection drops occur due to collisions with transmission/reception on other SIMs
Solution Approach 1:
The network is informed in advance about upcoming idle/inactive activities on other SIMs, allowing the network to proactively schedule retransmissions and avoid collisions before they occur. This preliminary coordination prevents data connection drops by ensuring the network is aware of and can accommodate the UE's multi-SIM operation schedule.
Solution Approach 2:
The UE provides feedback to the network about its idle/inactive activity schedule on other SIMs, enabling the network to adjust its transmission scheduling accordingly. This feedback mechanism allows the network to coordinate retransmissions with the UE's multi-SIM activity pattern, preventing collisions and maintaining reliable data connections.
2Device complexity
If the network schedules retransmissions without knowing about UE's idle/inactive activities, then network resource allocation is simplified, but RF resource waste occurs due to unsuccessful transmissions
Solution Approach 1:
The UE provides feedback information to the network about its idle/inactive activity schedule on other SIMs. This feedback enables the network to optimize its retransmission scheduling, avoiding unnecessary transmissions during periods when the UE is engaged in idle/inactive activities on other SIMs, thereby improving RF resource efficiency without significantly increasing network complexity.
3Adaptability or versatility
If the UE autonomously creates gaps for multi-SIM operations, then the UE can perform idle/inactive activities on other SIMs, but the network perceives incorrect radio quality leading to misguided control algorithms
Solution Approach 1:
The UE informs the network in advance about its planned idle/inactive activities on other SIMs, including timing and duration information. This preliminary notification allows the network to correctly interpret the UE's behavior during these periods and avoid misinterpreting the intentional gaps as radio quality degradation, preventing misguided control algorithm adjustments.
Solution Approach 2:
The UE provides feedback to the network about its multi-SIM operation schedule and status. This feedback mechanism ensures the network has accurate information about when the UE is engaged in idle/inactive activities on other SIMs, preventing the network from incorrectly perceiving radio quality issues and making inappropriate control decisions.
Data Source
AI summary
Various embodiments herein are directed to multiple subscriber identity module (multi-SIM) operation by a user equipment (UE) in communication with a network. Other embodiments may be described and/or claimed.