Prioritizing Handover Measurement Reports by Signal Strength
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Solution Overview
Problem
Current cell handover methods often result in selecting a non-ideal candidate for handover, leading to suboptimal handovers due to the order of measurement reports, which can cause decreased throughput, user experience degradation, increased power consumption, and unnecessary additional handovers.
Innovation Solution
The solution involves prioritizing measurement reports by including information from cells that have not yet completed their measurement timers, allowing the network to select the best candidate for handover by delaying the report until additional cells have completed their testing or by listing cells based on signal strength, thereby ensuring the network has sufficient information for optimal handover decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If measurement reports are transmitted immediately when a candidate cell fulfills handover criteria, then the handover procedure is executed quickly, but the network may select a non-ideal candidate due to the order of report transmission
Solution Approach 1:
The patent applies preliminary action by having the user device proactively include measurement information for multiple candidate cells in the measurement report before the network makes a handover decision. Instead of waiting for each cell to be evaluated separately, the device prepares comprehensive measurement data for all candidate cells in advance, allowing the network to select the optimal target cell based on complete information rather than sequential reports.
2Reliability
If the user device waits for all candidate cells to complete measurement before reporting, then the network can select the optimal candidate, but the handover procedure is delayed
Solution Approach 1:
The patent applies partial or excessive action by including measurement information for multiple candidate cells (more than the minimum one) in a single measurement report. This excessive inclusion of measurement data ensures the network has sufficient information to make an optimal handover decision without requiring the device to wait for all possible candidate cells to complete their measurement timers, thus balancing completeness with timeliness.
3Reliability
If measurement reports are prioritized by signal strength, then better handover candidates are selected, but additional processing is required to sort and prioritize cell information
Solution Approach 1:
The patent applies preliminary action by having the user device pre-sort and prioritize candidate cells based on signal strength criteria before including them in the measurement report. The device evaluates multiple candidate cells, ranks them according to signal strength or other quality metrics, and presents the sorted list to the network in advance. This preliminary prioritization eliminates the need for complex real-time sorting at the network side and ensures optimal handover candidates are presented first.
Data Source
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AI summary
Disclosed is a method of wireless cell evaluation for handover, and apparatus and system for same, comprising configuring a first timer for signal measurement of a first neighboring cell; performing a signal measurement on the first neighboring cell during the first timer; configuring one or more additional timers for signal measurement of one or more additional neighboring cells; performing a signal measurement on the one or more additional neighboring cells during the one or more additional timers; determining a subset of the one or more additional neighboring cells according to a measurement progress criterion; evaluating the first cell and the subset of cells for handover according to a sorting criterion; and generating a measurement report according to the evaluation for handover, comprising at least one cell within the first subset.