Multi-SIM UE Frequency Resource Signaling for Faster BWP Switching
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Solution Overview
Problem
In multi-subscriber identity module (SIM) user equipment (UE) devices, existing technologies face challenges in optimizing data delivery and performance when one SIM is active while another is idle, leading to delays and inefficiencies due to suboptimal resource allocation and complex switching between SIMs.
Innovation Solution
The UE determines a preferred frequency resource for both active and idle SIMs and provides an indication to the network entity using UE assistance information, allowing the network to adjust resource allocation and simplify switching processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE supports multiple SIMs with one connected and one idle, then the UE can maintain connectivity and monitor for incoming calls/data, but the performance degrades due to high priority activities being delayed and throughput reduction
Solution Approach 1:
The patent implements dynamic switching between different bandwidth parts (BWPs) based on the operational state of multiple SIMs. When one SIM transitions from idle to connected state, the UE dynamically switches to a BWP configured for that SIM, allowing adaptive resource allocation that optimizes data throughput while maintaining multi-SIM functionality. This dynamic reconfiguration resolves the contradiction by making the system flexible rather than static.
Solution Approach 2:
The patent changes the bandwidth part parameter to optimize performance for different SIM states. By configuring multiple BWPs with different parameters (bandwidth, frequency location) and switching between them based on which SIM is active, the system maintains high data throughput for the connected SIM while still supporting the idle SIM, thus resolving the throughput degradation issue.
2Productivity
If the UE switches between different bandwidth parts for different SIMs, then optimal resource allocation is achieved, but switching overhead and delay increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple bandwidth parts before the UE needs to switch between SIMs. The network provides BWP configuration information in advance, including bandwidth, frequency location, and other parameters. When a SIM state changes, the UE can immediately switch to the pre-configured BWP without delay, eliminating the need for real-time configuration and reducing switching overhead.
3Reliability
If the UE monitors both connected and idle SIMs simultaneously, then service availability is maintained, but resource management complexity increases
Solution Approach 1:
The patent segments the resource management by creating separate bandwidth parts for different SIMs. Each BWP is independently configured and managed, allowing the UE to handle multiple SIMs without complex cross-interference management. This segmentation simplifies resource allocation by providing clear separation between resources dedicated to each SIM, reducing the overall management complexity while maintaining service availability for both SIMs.
Data Source
AI summary
Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques that may help optimize performance of a multi-SIM UE. According to certain aspects, the multi-SIM UE may determine a preferred frequency resource for the UE to support at least two subscriber identity modules (SIMs), at least one of which is connected and one of which is idle and provide, via the at least one connected SIM, an indication of the preferred frequency resource to a network entity.