Base Station Time-Grid Scheduling for UAV Interference Control
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Solution Overview
Problem
The existing LTE system faces signal interference issues when serving both ground terminals and UAVs due to differences in propagation models and down-tilt angles of base stations, leading to network service disruptions and quality degradation.
Innovation Solution
A method and apparatus that schedule network devices to operate within specific time grids corresponding to over-the-air areas, instructing them to either operate or stop operating to prevent interference, thereby ensuring dedicated network services for each area and improving network quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a same base station provides network service for both ground terminals and UAVs simultaneously, then network coverage is improved, but signal interference increases
Solution Approach 1:
The invention segments the network service provision by dividing time into distinct time grids. Different base stations are assigned to serve different over-the-air areas in different time grids, preventing simultaneous service provision that causes interference while maintaining comprehensive coverage across all areas and time periods.
Solution Approach 2:
The invention implements periodic action by cyclically assigning different base stations to different over-the-air areas across successive time grids. This periodic rotation ensures that each base station serves multiple areas over time without causing interference within any single time grid, thereby maintaining both coverage and signal quality.
2Reliability
If base stations use down-tilt angles to serve ground terminals, then ground service quality is improved, but UAV service capability deteriorates
Solution Approach 1:
The invention segments the service function by assigning different base stations to different spatial areas (ground vs. over-the-air) in different time grids. This allows ground-oriented base stations with down-tilt angles to optimize ground service while over-the-air oriented base stations serve UAVs, eliminating the conflict between these opposing service requirements.
Solution Approach 2:
The invention applies dynamics by enabling base stations to dynamically switch between serving ground terminals and UAVs across different time grids. Base stations can adjust their operational focus based on the time grid assignment, effectively adapting their service orientation to match the requirements of the current time period and target area.
3Reliability
If network devices operate continuously to provide service, then service availability is improved, but interference between network devices increases
Solution Approach 1:
The invention implements periodic action by organizing network device operation into discrete time grids with structured activation patterns. Network devices operate in scheduled intervals according to their assigned over-the-air area, ensuring continuous overall service availability while preventing simultaneous operation that would cause interference between different devices.
Data Source
AI summary
The present disclosure provides a method and an apparatus for controlling a network device, a method and an apparatus for sending control information, and a method and an apparatus for data. According to technical solutions provided in the present disclosure, network devices providing network services for different over-the-air areas are scheduled to different time grids, so that the terminal devices located in different over-the-air areas send data to respective corresponding network devices within different time grids, thereby avoiding signal interference and improving network quality.