UAV Height Thresholds for LTE Coverage and Interference Control
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Solution Overview
Problem
UAVs pose interference challenges in LTE networks due to varying flight heights and speeds, affecting normal communication of ground-based devices.
Innovation Solution
A scheme for determining and configuring height thresholds for UAV communications based on base station, cell, and user equipment information to optimize LTE-based UAV communication, including dynamic measurement and reporting mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If UAVs operate at high flight heights in LTE networks, then UAV communication coverage is improved, but interference to ground-based devices increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting transmission power levels and frequency resources based on UAV flight height. When UAVs operate above a threshold height, the system modifies communication parameters such as reducing power spectral density or allocating different frequency bands to mitigate interference to ground devices while maintaining UAV communication coverage.
Solution Approach 2:
The patent implements local quality by applying different communication strategies to different spatial zones. Ground-based devices and UAVs operate with differentiated resource allocations and interference management policies. The system identifies UAV-specific communication patterns and applies localized interference coordination mechanisms in three-dimensional space, treating UAV and ground device communications differently based on their spatial positions.
2Reliability
If height thresholds are dynamically determined for UAV communications, then communication performance is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing height thresholds during network planning and deployment phases. These thresholds are determined based on propagation models, terrain characteristics, and interference patterns, then configured in advance in base station databases. During UAV operations, the system performs simple threshold lookups rather than complex real-time calculations, reducing operational complexity while maintaining reliable communication performance.
Solution Approach 2:
The patent implements feedback mechanisms where UAVs report their flight heights and communication quality metrics to base stations. The system continuously monitors interference levels and adjusts height thresholds dynamically based on observed performance. This closed-loop feedback allows the system to adapt to changing conditions while maintaining manageable complexity through incremental adjustments rather than complete recalculations.
Data Source
AI summary
Disclosed in the present application are an apparatus and method in a wireless communication system, and a computer readable storage medium. The apparatus comprises a processing circuit. The processing circuit is configured to determine one or more height thresholds for a user equipment according to at least one of base station-related information, cell-related information and user equipment-related information. According to at least one aspect of embodiments of the present disclosure, a proper height threshold is set for a communication scenario of an unmanned aerial vehicle, which helps to resolve and alleviate various problems that may exist in the communication scenario of the unmanned aerial vehicle.