Radio Link Failure Report Handling for Inter-Frequency Handover Optimization
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Solution Overview
Problem
Current 3GPP R10 protocol-based systems face challenges in optimizing handover parameters due to inadequate processing of radio link failure reports, particularly in inter-frequency and inter-system scenarios, leading to suboptimal handover performance and failure.
Innovation Solution
A method and device for processing radio link failure reports that include an A2 event indication, allowing user equipment to report on whether it detects or fails to detect inter-frequency or inter-system A2 events, enabling access devices to count relevant events and optimize handover parameters, such as the A2 threshold, for improved handover optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base station uses existing standard RLF report definitions for handover optimization, then the processing complexity is low, but the optimization capability for inter-frequency and inter-system scenarios is insufficient
Solution Approach 1:
The RLF report is segmented into multiple independent indication fields: inter-frequency A2 event indication, inter-system A2 event indication, and inter-system cell information. This segmentation allows the base station to process only the relevant parts for each scenario, enhancing optimization capability for specific handover types while keeping the overall processing complexity manageable through modular analysis of each indication field
Solution Approach 2:
The enhanced RLF report structure serves multiple functions simultaneously: it provides coverage optimization information through A2 event indications, enables inter-frequency handover optimization, supports inter-system handover optimization, and maintains compatibility with existing RLF reporting mechanisms. This multi-functionality allows a single report structure to address diverse handover scenarios without requiring separate processing systems
2Measurement precision
If the RLF report includes detailed A2 event indications and inter-system cell information, then the measurement precision for handover optimization is improved, but the information processing load increases
Solution Approach 1:
The patent extracts only the most critical information elements needed for handover optimization: the A2 event indication status and inter-system cell information. By taking out only these essential data points rather than reporting all possible measurement parameters, the report achieves high measurement precision for key decision-making parameters while keeping the overall data volume manageable
Solution Approach 2:
The RLF report applies local quality by providing detailed information only where needed: A2 event indications are included specifically for inter-frequency and inter-system scenarios where such measurements are relevant. This selective detail provision ensures high measurement precision for critical optimization parameters while avoiding unnecessary data transmission in other contexts
Data Source
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AI summary
Embodiments of the present invention disclose a method, a device and a system for processing a radio link failure report and for statistically processing an abnormal event. A method for processing a radio link failure report may include: a user equipment generates a radio link failure report, wherein the radio link failure report carries an A2 event indication recorded by the user equipment; and reports the radio link failure report. The technical solutions of the embodiments of the present invention are beneficial to improve the handover parameter optimization capability of a network side.