Dynamic LEO Satellite Downlink Power for Variable Elevation
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Solution Overview
Problem
LEO satellites face challenges in providing consistent downlink power to users in remote areas due to varying elevations and weather conditions, which affects signal strength and requires dynamic power adjustments.
Innovation Solution
The method involves receiving uplink communications from user equipment (UE) that include altitude and signal strength measurements, determining the location and transmission angle of the UE, and dynamically setting the downlink transmission power for the extraterrestrial base station based on these measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If additional LEO satellites are deployed to a constellation, then coverage area and service capability are improved, but deployment time and cost increase
Solution Approach 1:
The patent dynamically changes the downlink transmission power parameter based on user equipment conditions (altitude, weather, elevation angle) to optimize coverage without adding satellites. By adjusting power levels in real-time, the system adapts to varying propagation conditions and maintains service quality across different geographic areas.
Solution Approach 2:
The system implements dynamic power configuration where the extraterrestrial base station continuously adjusts downlink transmission power based on real-time feedback from user equipment about altitude, weather conditions, and signal quality. This dynamic adaptation enables flexible coverage management without physical infrastructure changes.
2Area of stationary object
If downlink transmission power is increased to serve all users, then service coverage is improved, but power consumption and interference increase
Solution Approach 1:
The patent applies local quality by configuring different downlink transmission power levels for different user equipment based on their specific conditions. Users at higher altitudes or in favorable weather receive lower power, while users in challenging conditions receive higher power, optimizing overall network efficiency and reducing total power consumption.
Solution Approach 2:
The system dynamically adjusts the downlink transmission power parameter based on user equipment altitude, weather conditions, and elevation angle measurements. This parameter adaptation ensures adequate coverage for all users while minimizing total power consumption and reducing inter-user interference.
3Reliability
If downlink transmission power is increased to compensate for weather and elevation effects, then signal reliability is improved, but power efficiency deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where user equipment measures signal quality, altitude, and weather conditions, then reports this information to the extraterrestrial base station. The base station uses this feedback to dynamically adjust downlink transmission power, ensuring reliable communication while optimizing power efficiency through data-driven decisions.
Solution Approach 2:
The system changes downlink transmission power parameters based on measured environmental factors (altitude, weather, elevation angle) to maintain signal reliability. By adjusting power only when and where needed rather than uniformly increasing it, the system maintains reliability while preserving power efficiency.
Data Source
AI summary
According to aspects herein, methods and a non-transitory computer storage medium storing computer instructions for dynamic power configuration of LEO satellites are provided. The method begins with receiving, at an extraterrestrial base station, at least one first uplink communication from a first device. The first uplink communication contains an altitude measurement and at least one of: a signal strength measurement and a power level of the first device. The method then continues with determining a location and transmission angle of the first device with respect to a field of regard of the extraterrestrial base station. Then, a downlink transmission power setting for the extraterrestrial base station is dynamically determined based on the altitude measurement and the transmission angle of the first device.