Network Device Pilot Configuration for UAV Over-the-Air Coverage
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Solution Overview
Problem
The existing LTE system faces signal interference issues when serving unmanned aerial vehicles (UAVs) due to differences in propagation models between ground terminals and flying UAVs, as base stations are designed to serve the ground and have a down-tilt angle, making it challenging to configure an effective network for over-the-air areas.
Innovation Solution
A method and apparatus for configuring network devices to provide a network service for over-the-air areas by determining sets of network devices, identifying target network devices, generating pilot configuration information, and sending it to these devices to ensure pilots are uniformly distributed in time and frequency domains, thereby avoiding interference between beam sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If base stations use down-tilt angle to serve ground terminals, then ground coverage is improved, but over-the-air coverage for UAVs deteriorates
Solution Approach 1:
The patent divides the coverage area into ground area and over-the-air area, and configures different beam sequences for each area. The base station segments its serving capability to handle ground terminals and UAVs separately using different beamforming configurations, allowing optimized coverage for each domain without mutual interference.
Solution Approach 2:
The patent applies different quality characteristics to different spatial regions by configuring specific beam sequences for over-the-air areas versus ground areas. Each region receives tailored beamforming parameters (tilt angles, beam directions) suited to its specific coverage requirements, rather than using a uniform configuration.
2Device complexity
If base stations serve multiple over-the-air areas with the same beam sequence, then network device complexity is reduced, but signal interference between beams increases
Solution Approach 1:
Each over-the-air area is assigned a unique beam sequence configuration with specific time-frequency resource allocations. This local differentiation ensures that beams serving different aerial regions have distinct characteristics, preventing mutual interference while maintaining manageable complexity through systematic configuration rules.
Solution Approach 2:
The patent introduces time and frequency domain dimensions to differentiate beam sequences for different over-the-air areas. Instead of only spatial separation, the solution utilizes orthogonal resources across multiple dimensions (time slots, frequency subcarriers) to eliminate beam interference while serving multiple aerial regions.
3Object-affected harmful factors
If pilots are uniformly distributed in time and frequency domains, then pilot interference between beams is avoided, but resource configuration complexity increases
Solution Approach 1:
The patent distributes pilots across both time and frequency domains in a uniform pattern, utilizing two-dimensional resource allocation to orthogonalize pilot sequences for different beam sequences. This multi-dimensional distribution ensures that pilots from different beams do not interfere with each other, while the systematic pattern provides manageable configuration complexity.
Data Source
AI summary
The present disclosure provides a method and an apparatus for configuring a resource, a network device, and a storage medium. The method includes: determining a set of network devices that corresponds to each over-the-air area and that provides a network service for the over-the-air area, where the set of network devices includes an identifier of a network device satisfying a condition for providing a network service for the over-the-air area; determining, according to the set of network devices, a target network device providing a network service for a plurality of over-the-air areas, and a beam sequence used by the target network device; generating pilot configuration information for configuring a pilot sequence for the beam sequence of the target network device; and sending the pilot configuration information to the target network device.