Wireless Measurement Reporting for Aerial UE Interference Triggers
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Solution Overview
Problem
Existing LTE systems inadequately address downlink interference for aerial UEs, which experience line-of-sight propagation and increased visibility to multiple cells, leading to inefficient measurement reporting and uplink interference.
Innovation Solution
A method for wireless devices to determine and report measurement reports based on a combined threshold of cells satisfying both a first and second report condition, effectively informing downlink interference while reducing uplink interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the legacy LTE procedure uses numberOfTriggeringCells threshold to prevent excessive measurement reports, then uplink interference is reduced, but downlink interference is not adequately informed
Solution Approach 1:
The patent segments the measurement reporting function into two independent reporting conditions: one for uplink interference (numberOfTriggeringCells) and one for downlink interference (downlinkInterferenceThreshold). This allows each condition to be evaluated separately and independently, enabling the UE to report based on either uplink or downlink interference requirements without being constrained by a single combined threshold.
Solution Approach 2:
The patent adds a new dimension to the measurement reporting mechanism by introducing downlink interference as a separate reporting trigger. Instead of only reporting based on uplink interference (one dimension), the system now reports based on either uplink or downlink interference conditions, effectively adding another dimension to the decision space and enabling more comprehensive interference management.
2Area of stationary object
If aerial UEs increase altitude to expand coverage, then visibility to more cells increases, but measurement reporting becomes inefficient
Solution Approach 1:
The patent changes the parameter used for measurement reporting from a single count-based threshold to a dual-condition evaluation system. By introducing downlink interference as a separate reporting condition with its own threshold, the system adapts to the changing propagation conditions at higher altitudes where more cells become visible, preventing inefficient reporting while maintaining comprehensive coverage.
3Loss of information
If the UE reports measurement reports based on total cell triggers, then downlink interference is informed, but uplink interference management is complemented
Solution Approach 1:
The patent merges the uplink and downlink interference reporting mechanisms into a unified measurement report structure. Both reporting conditions (uplink and downlink) are evaluated and reported together in a single measurement report message, allowing the network to receive comprehensive interference information without requiring separate reporting procedures for each type of interference.
Data Source
AI summary
A method and an apparatus for measurements reporting in a wireless communication system are provided. The method comprises: determining (i) a first list satisfying a first report condition related to the first measurement ID and (ii) a second list satisfying a second report condition related to the second measurement ID; and based on a number of elements included in any one of the first list and the second list being equal to or greater than a threshold, transmitting a measurement report including (i) information related to the first list and the second list and (ii) information related to the first measurement ID and the second measurement ID.