Radio Link Failure Reporting for Associated Bandwidth Parts
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing radio link failures and optimizing bandwidth part configurations, particularly in multicarrier communication systems, leading to suboptimal performance and resource utilization.
Innovation Solution
Implementing a system that provides enhanced radio link failure reporting mechanisms and dynamic bandwidth part management, allowing for more precise control and adaptation of logical channels based on channel state information and user plane protocols, thereby optimizing resource allocation and reducing failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional radio link failure reporting mechanisms are used, then system complexity is reduced, but radio link failure detection precision and response time deteriorate
Solution Approach 1:
The patent segments the radio link monitoring function by introducing separate failure detection mechanisms for different bandwidth parts (BWPs). The UE independently monitors radio link quality on each BWP and reports failures separately, enabling precise detection without requiring a completely new centralized reporting architecture. This segmentation allows the system to achieve higher detection precision while limiting complexity growth to modular additions.
2Productivity
If dynamic bandwidth part management is implemented, then resource utilization improves, but control mechanism complexity increases
Solution Approach 1:
The patent implements dynamic BWP management where the UE can switch between different BWPs based on radio link conditions. The system dynamically activates or deactivates BWPs through MAC CE commands, allowing resource allocation to adapt to changing channel conditions. This dynamic approach improves resource utilization by concentrating resources on active BWPs while maintaining the ability to quickly switch configurations when needed.
Solution Approach 2:
The patent establishes feedback loops where the UE monitors radio link quality on each BWP and reports failures back to the network. The network uses this feedback to make informed decisions about BWP activation, deactivation, or switching. This feedback mechanism enables the system to optimize resource utilization based on actual channel conditions while keeping control complexity manageable through rule-based responses to failure reports.
3Reliability
If radio link failure reporting is performed on deactivated bandwidth parts, then detection coverage improves, but processing overhead increases
Solution Approach 1:
The patent applies local quality by allowing different monitoring behaviors for different BWPs based on their activation state. For deactivated BWPs, the system performs limited monitoring only when specifically configured to do so, rather than continuous monitoring. This localized approach to quality monitoring ensures that failure detection coverage is maintained for all BWPs while minimizing processing overhead by avoiding unnecessary monitoring activities on inactive resources.
Data Source
AI summary
A wireless device transmits a radio link failure report indicating a connection failure with a base station. The radio link failure report comprises: an identifier of a cell in which a radio link failure occurs, a measurement result of the cell, and a subcarrier spacing parameter indicating a subcarrier spacing of a bandwidth part (BWP) associated with the connection failure.