UE Radio Problem Detection via RRC Re-establishment Signaling
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Solution Overview
Problem
Current radio network technologies lack an effective method to automatically detect and address issues such as radio link failure, handover failure, Handover Too Early, and Handover Too Late, leading to call drops and poor user experience due to inadequate parameter settings.
Innovation Solution
A method and apparatus that enable a UE to send problem information, including signal quality metrics like RSRP and RSRQ, to a base station, which forwards this information to a server or relevant cell, allowing the network to identify and optimize parameters to resolve radio network problems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic detection of radio network problems is implemented, then network performance and reliability are improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The UE autonomously detects radio network problems (RLF, HOF, handover timing issues) and generates problem information including failure cause, cell identities, and signal quality metrics. The system enables self-diagnosis at the UE level without requiring complex external monitoring infrastructure, thereby improving reliability while controlling complexity through distributed intelligence
Solution Approach 2:
The patent implements a feedback mechanism where the UE reports detected radio network problems to the network side via RRC signaling. This feedback loop provides the network with real-time information about failures and anomalies, enabling dynamic optimization of network parameters and handover configurations to improve overall system reliability
2Productivity
If problem information collection is implemented, then network optimization capability is improved, but information processing overhead increases
Solution Approach 1:
The patent extracts only the most critical problem information elements needed for network optimization, such as failure cause, source and target cell identities, and key signal quality metrics (RSRP, RSRQ). By selectively extracting essential data rather than transmitting complete raw measurements, the system improves optimization efficiency while minimizing information overhead
Solution Approach 2:
The patent transforms raw radio measurement data into standardized problem information parameters that are optimized for transmission and processing. The UE converts complex signal measurements into condensed problem descriptions with specific parameter structures, reducing information overhead while preserving the essential data needed for network optimization decisions
Data Source
AI summary
A method, an apparatus, and a system for detecting a radio network problem are disclosed. The method includes: when a radio network problem occurs on a user equipment (UE), a first base station controlling a cell that a radio resource control (RRC) connection established with the UE, receives problem information about the radio network problem sent by the UE, in a procedure of re-establishing the RRC connection by the UE, and sends the problem information to a second base station controlling a cell where the radio network problem occurs.