Bandwidth Part IDC Reporting for Reduced UE Interference Overhead
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Solution Overview
Problem
In-device coexistence (IDC) interference occurs in user equipment (UE) due to extreme proximity of multiple radio transceivers operating on adjacent frequencies, causing interference power that exceeds the desired signal level, necessitating network intervention for effective IDC indication.
Innovation Solution
A method and apparatus for UE to identify and report IDC status changes in specific bandwidth parts (BWPs), allowing for proper IDC indication to the network, thereby preventing frequent triggering of unnecessary IDC indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE reports IDC status for all configured BWPs, then the network receives complete IDC information, but the number of IDC indications increases excessively causing network overhead
Solution Approach 1:
The patent divides the set of all configured BWPs into two subsets: a first subset of BWPs where IDC status changes trigger IDC indications, and a second subset where they do not. This segmentation allows the UE to selectively report IDC status only for specific BWPs, reducing the total number of indications while maintaining reliability for critical BWPs.
Solution Approach 2:
The patent applies different reporting rules to different subsets of BWPs based on their local characteristics. The first subset (where IDC indication is triggered) receives detailed IDC status reporting, while the second subset uses simplified reporting. This local differentiation optimizes the balance between indication completeness and network overhead.
2Reliability
If the UE monitors IDC status for all BWPs, then all IDC issues are detected, but the complexity of IDC status management increases
Solution Approach 1:
The patent segments BWP monitoring into two groups: BWPs in the first subset require full IDC status monitoring and reporting, while BWPs in the second subset use simplified monitoring. This reduces the overall complexity of IDC status management while maintaining detection coverage for critical BWPs.
Solution Approach 2:
The patent applies partial monitoring action to the second subset of BWPs, where not all IDC status changes trigger indications. This partial approach reduces monitoring complexity while still providing adequate coverage through the first subset's comprehensive monitoring.
3Adaptability or versatility
If the network configures multiple BWPs for the UE, then resource allocation flexibility improves, but the difficulty of managing IDC indications across BWPs increases
Solution Approach 1:
The patent segments the configured BWPs into two subsets with different IDC indication rules. This segmentation allows the network to maintain flexible resource allocation across multiple BWPs while simplifying IDC indication management by applying different reporting requirements to different subsets.
Solution Approach 2:
The patent applies local quality by configuring different IDC indication behaviors for different subsets of BWPs. The first subset uses standard IDC indication rules, while the second subset uses modified rules, allowing flexible resource allocation without proportionally increasing IDC management complexity.
Data Source
AI summary
The present disclosure relates to in-device coexistence indication for multiple bandwidth parts (BWPs) in wireless communications. According to an embodiment of the present disclosure, a method performed by a user equipment (UE) in a wireless communication system comprises: receiving, from a network, a configuration for a plurality of bandwidth parts (BWPs); identifying a subset of BWPs among the plurality of BWPs; detecting a change of an IDC status in a BWP among the plurality of BWPs; determining whether the BWP in which a change of an IDC status is detected is included in the subset of BWPs; and transmitting, to the network, IDC information comprising an IDC status of the BWP, based on the BWP being included in the subset of BWPs.