Airborne Cell Selection Using Radiation Parameters
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Solution Overview
Problem
Conventional wireless communication networks face challenges in efficiently managing cell selection and reselection for airborne mobile stations like UAVs due to line of sight issues with multiple base stations, leading to high interference and increased processing power requirements.
Innovation Solution
The system transmits and receives airborne UE parameters such as radiation center height and vertical beamwidth to facilitate efficient cell selection and reduce the need for handovers, using these parameters to determine the best cell connection and minimize processing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cell selection methods are used for airborne mobile stations, then the mobile station can maintain cellular connectivity, but the processing power required increases and handoff rates become excessively high due to line of sight with numerous base stations
Solution Approach 1:
The patent changes the cell selection parameters from conventional terrestrial metrics to airborne-specific parameters including radiation center height, vertical beamwidth, and three-dimensional spatial relationships. This parameter transformation enables the system to account for the unique propagation characteristics of airborne stations, reducing unnecessary handoffs and processing requirements while maintaining connectivity reliability
Solution Approach 2:
The patent segments the cell selection process into distinct phases: initial cell acquisition using airborne parameters, cell evaluation based on vertical beamwidth and radiation patterns, and handoff decision-making that considers three-dimensional geometry. This segmentation allows each phase to be optimized independently, reducing overall processing power consumption
2Reliability
If conventional cell selection methods are used for airborne mobile stations, then the mobile station can maintain cellular connectivity, but the number of base stations with line of sight increases leading to high interference levels
Solution Approach 1:
The patent applies local quality by evaluating each candidate base station's vertical beamwidth and radiation pattern characteristics specific to the airborne station's location and orientation. Instead of treating all base stations equally, the system assesses the local propagation conditions for each potential connection, selecting base stations whose beam characteristics are optimally aligned with the airborne station, thereby reducing interference from misaligned transmissions
Solution Approach 2:
The patent introduces airborne-specific parameters as intermediaries between the airborne station and base stations. These parameters (radiation center height, vertical beamwidth, three-dimensional spatial relationships) act as mediators that translate the unique airborne propagation environment into selection criteria, enabling the system to identify and prefer base stations with favorable geometric relationships that minimize interference
3Ease of operation
If conventional cell selection methods are used for airborne mobile stations, then basic cell selection can be performed, but the complexity of selecting from multiple base stations with line of sight increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and broadcasting airborne UE parameters (radiation center height, vertical beamwidth) from base stations before the airborne station needs to make a selection decision. The airborne station receives these parameters in advance during cell acquisition, allowing it to pre-filter candidate base stations based on their vertical beam characteristics before performing detailed evaluation, thereby simplifying the overall selection process
Data Source
AI summary
Embodiments of the present disclosure are directed to systems and methods for facilitating optimized cell selection for airborne user devices, such as wirelessly connected unmanned aerial vehicles. One or more synchronization signals may be modified to include one or more parameters that would improve airborne cell selection, including radiation center height, vertical beamwidth, horizontal beamwidth and frequency band availability. By optimizing cell selection and therefore reducing unnecessary handovers, the airborne user device will spend less battery power and processing resources, improving overall performance.