Airborne Base Station Scheduling for Multi-Cell Interference Control
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Solution Overview
Problem
Flight vehicles forming multi-cells on the ground face dynamic wireless environments due to changing flight conditions and interference, leading to reduced throughput for user terminals.
Innovation Solution
A base station apparatus mounted on a flight vehicle constantly acquires flight-related information and performs inter-cell coordinated control to adjust scheduling, preventing interference and improving throughput by allocating resource blocks with different frequency bands and time slots based on user terminal correlations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If inter-cell coordinated control is implemented to prevent interference, then throughput is improved, but device complexity increases
Solution Approach 1:
The system segments the control function by designating specific base stations as coordinating base stations for different cells. This segmentation allows interference management to be distributed across multiple coordinating base stations rather than requiring all base stations to perform complex inter-cell coordination, thereby reducing overall system complexity while maintaining throughput improvement through coordinated resource allocation.
2Productivity
If resource blocks are allocated based on user terminal correlations, then interference is minimized and throughput is enhanced, but information processing requirements increase
Solution Approach 1:
The system performs preliminary action by having coordinating base stations exchange correlation information between user terminals in advance of resource allocation decisions. This preliminary exchange of information allows the scheduling base station to make informed resource allocation decisions without requiring real-time processing of all user terminal data, thereby reducing the information processing load during critical scheduling operations while still achieving interference minimization through correlation-aware resource block allocation.
Data Source
AI summary
Provided is a base station apparatus mounted on a flight vehicle and forming a multi-cell comprising cells on the ground to provide a wireless communication service for a user terminal within the multi-cell, comprising: a location-information acquiring unit that acquires location information of a user terminal served by the multi-cell; a flight-vehicle-related information acquiring unit that acquires flight-vehicle-related information comprising location information and attitude information of the flight vehicle; a terminal identification unit that identifies, among the user terminals, a victim user terminal expected to receive interference from a cell other than a cell serving, based on the location information of the user terminals and the flight-vehicle-related information; and a scheduling control unit that controls, to prevent the interference, scheduling of wireless resources of a first cell being the cell serving the victim user terminal, and a second cell being the cell expected to interfere with the victim user terminal.