Mobile Terminal Measurement Report for Handover Optimization
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Solution Overview
Problem
In wireless communication systems, existing technologies face challenges in efficiently managing signal quality between serving and neighboring base stations, leading to unnecessary handover operations and poor cell-level signal quality conditions, which can result in decreased network performance and increased ping-pong events.
Innovation Solution
A mobile terminal is configured to receive measurement configuration messages indicating poor cell-level signal quality conditions and combined measurement events, allowing it to measure signal beams from both serving and neighboring base stations, determine cell-level signal quality parameters, and send measurement reports to the serving base station when specific conditions are met, thereby optimizing handover decisions and reducing unnecessary cell reselections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the mobile terminal measures and reports signal quality for both serving and neighboring base stations continuously, then the handover decision accuracy is improved, but the measurement and reporting overhead increases
Solution Approach 1:
The network configures the mobile terminal with measurement configurations for both serving and neighboring base stations in advance, before handover decisions are needed. This allows the terminal to have measurement capabilities ready without continuous active measurement and reporting, reducing overhead while maintaining decision accuracy when conditions warrant handover evaluation
Solution Approach 2:
Instead of continuously measuring and reporting all possible parameters, the system measures and reports only when specific triggering conditions are met (such as signal quality thresholds). This partial action approach reduces measurement and reporting overhead while still capturing sufficient information for accurate handover decisions when needed
2Reliability
If the mobile terminal switches to a neighboring base station when signal quality improves, then the connection quality is improved, but unnecessary handover operations and ping-pong events increase
Solution Approach 1:
The system uses measurement reports containing signal quality information from both serving and neighboring base stations as feedback to the network. The network uses this feedback to make informed handover decisions, avoiding premature or unnecessary handovers that would degrade network performance through ping-pong events, while still ensuring handover when it truly improves connection quality
Solution Approach 2:
The network performs preliminary evaluation of handover conditions by comparing measurement reports against configured thresholds and criteria before executing handover. This preliminary action filters out cases where handover would not improve connection quality or would cause ping-pong events, ensuring that handover operations are performed only when beneficial
3Device complexity
If the mobile terminal uses only serving base station signal beams, then the measurement complexity is reduced, but the cell-level signal quality assessment becomes inaccurate under poor signal conditions
Solution Approach 1:
The measurement process is segmented into conditional stages: when serving base station signal quality is adequate, only serving beam measurements are performed (low complexity); when serving signal deteriorates below thresholds, the system segments the measurement task to include neighboring base station beam measurements as well, maintaining assessment accuracy while managing complexity through conditional activation
Data Source
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AI summary
Aspects of the disclosure provide a mobile terminal including a processing circuit. The processing circuit is configured to obtain a serving cell measurement result of measuring a first set of signal beams from a serving base station, determine a cell-level signal quality parameter based on the serving cell measurement result, and determine whether the cell-level signal quality parameter meets a poor cell-level signal quality condition. The processing circuit is further configured to, in response to a determination that the cell-level signal quality parameter meets the poor cell-level signal quality condition, obtain a neighboring cell measurement result of measuring a second set of signal beams from a neighboring base station, determine whether a measurement event occurs based on the serving cell measurement result and the neighboring cell measurement result, and send a measurement report to the serving base station in response to a determination that the measurement event occurs.