UAV Measurement Reporting Threshold Configuration
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Solution Overview
Problem
Uncrewed aerial vehicle (UAV) terminals in wireless communication systems face challenges in efficiently reporting measurement data due to higher interference levels from multiple cells, which can lead to incorrect handover decisions and reduced network performance.
Innovation Solution
A method and apparatus for UAVs to receive configuration information on measurement reports from base stations, transmitting first and second measurement reports based on entry and leaving conditions, allowing for efficient data reporting and improved handover processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement reports are transmitted for multiple triggering cells, then measurement coverage is improved, but interference from multiple cells increases leading to incorrect handover decisions
Solution Approach 1:
The patent applies preliminary action by configuring the UE with a threshold number of triggering cells before measurement reporting begins. The base station pre-configures the parameter numberOfTriggeringCells, and the UE evaluates whether the number of cells satisfying measurement criteria reaches this threshold before initiating measurement report transmission. This preliminary threshold check prevents reporting when interference from multiple cells would degrade decision accuracy.
2Adaptability or versatility
If measurement reporting is performed for all cells meeting entry conditions, then handover options increase, but network resource consumption increases
Solution Approach 1:
The patent implements partial action by requiring that only when the number of triggering cells reaches or exceeds the configured threshold should measurement reports be transmitted. This prevents excessive reporting when only a few cells meet criteria, while still ensuring sufficient handover options are available when the threshold is reached. The threshold parameter allows network operators to balance between handover flexibility and resource consumption based on specific deployment scenarios.
3Speed
If the number of triggering cells threshold is set low, then handover responsiveness is improved, but measurement reporting errors increase due to interference
Solution Approach 1:
The patent employs parameter changes by introducing the numberOfTriggeringCells threshold as a configurable parameter that can be adjusted based on network conditions, cell density, and interference levels. This parameter dynamically balances handover responsiveness against decision accuracy - in high-interference scenarios, the threshold can be set higher to ensure reliability, while in low-interference scenarios, it can be lowered to improve responsiveness. The base station can update this parameter through RRC reconfiguration to adapt to changing network conditions.
Data Source
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AI summary
The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). Methods and devices are provided in a wireless communication system. Configuration information on a measurement report is received from a base station. The configuration information includes first information on a first number of triggering cells. A first measurement report for at least one first cell fulfilling an entry condition is transmitted to the base station, in case that a second number of the at least one first cell is larger than or equal to the first number of triggering cells. A second measurement report for at least one second cell fulfilling a leaving condition is transmitted to the base station. The at least one second cell is in the first measurement report.