Cell Handover Using Multi-Indicator Quality Assessment
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Solution Overview
Problem
Cell handover processes in mobile communication systems, such as 3GPP, are prone to failure due to inaccurate quality assessment, PCI confusion, and mismatched handover policies, leading to reduced service quality and high failure rates.
Innovation Solution
A cell handover method that utilizes multiple communication indicators to assess service quality, selects a suitable neighboring cell based on comprehensive quality metrics, and applies tailored handover policies to improve success rates, while addressing PCI confusion and preventing handover cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cell handover methods are used, then the handover process is simple, but the handover failure rate is high
Solution Approach 1:
The handover assessment is segmented into multiple independent communication indicators (first communication indicator, second communication indicator, third communication indicator) that are evaluated separately. Each indicator assesses a specific aspect of communication quality between the serving cell and terminal, allowing for granular analysis rather than a single complex assessment metric.
Solution Approach 2:
The patent changes the assessment parameters by introducing multiple communication indicators with different thresholds (first threshold, second threshold, third threshold) instead of using a single quality metric. This enables dynamic adjustment of handover decisions based on the specific values of multiple parameters, improving reliability while maintaining manageable complexity.
2Measurement precision
If multiple communication indicators are used to assess service quality, then the accuracy of handover decisions is improved, but the complexity of the handover process increases
Solution Approach 1:
The complex assessment task is divided into multiple independent indicator evaluations. Each communication indicator (first, second, third) measures a specific dimension of service quality, and their results are combined through a structured decision process with multiple thresholds, achieving high measurement precision without overwhelming complexity.
Solution Approach 2:
Different communication indicators assess different local aspects of communication quality (e.g., signal strength, interference, throughput). Each indicator focuses on a specific quality dimension with its own threshold, allowing precise local assessment that contributes to the overall handover decision without requiring complex global analysis.
3Reliability
If handover is triggered when service quality is between first standard and second standard, then handover decisions are more accurate, but the risk of PCI confusion increases
Solution Approach 1:
The patent performs preliminary actions by evaluating multiple communication indicators and comparing them against multiple thresholds before triggering handover. This preliminary comprehensive assessment ensures that handover is only initiated when multiple conditions are met, reducing the likelihood of PCI confusion by avoiding hasty decisions based on insufficient information.
Solution Approach 2:
The structured multi-threshold assessment creates a feedback mechanism where each communication indicator provides information about a different aspect of service quality. The handover decision is made based on the combined feedback from all indicators, allowing the system to distinguish between temporary fluctuations and genuine quality degradation that would trigger handover, thereby reducing PCI confusion.
Data Source
AI summary
The present disclosure provides a cell handover method, including: acquiring a plurality of communication indicators between a serving cell and a terminal, to determine a service communication quality, the service communication quality representing a quality of communication between the serving cell and the terminal; and determining a neighboring cell as a destination cell for a cell handover of the terminal, and sending a cell handover instruction to the terminal, in response to that the service communication quality is lower than a first standard and higher than a second standard, the second standard being a standard for ensuring a signal sent by the serving cell to be receivable by the terminal. The present disclosure further provides a base station and a computer-readable storage medium.