Multi-Band Satellite Load Balancing Under Rain Attenuation
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Solution Overview
Problem
Existing satellite communication systems face challenges in leveraging multi-band capable terminals to extend capacity and increase throughput, considering factors such as rain attenuation, terminal capabilities, beam overlapping, and differential capacity and attenuation across frequency bands.
Innovation Solution
Implementing a multi-band hybrid satellite communication system with dynamic inroute and outroute reconfiguration processes, load balancing algorithms, and adaptive beam switching to optimize terminal configurations and resource allocation across multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If satellite terminals operate in multiple frequency bands to extend capacity, then system throughput increases, but system complexity increases
Solution Approach 1:
The patent implements dynamic band selection and dynamic inroute/outroute reconfiguration that allows terminals and the satellite system to adaptively switch between frequency bands and communication paths based on real-time conditions such as rain attenuation, terminal capabilities, and network load, thereby increasing throughput without permanently complicating the system architecture
Solution Approach 2:
The system dynamically changes operating parameters including frequency band selection, symbol rates, and code rate organizers based on channel quality indicators and network conditions, enabling the system to optimize throughput by transitioning between different operational states rather than maintaining a fixed complex multi-band configuration
2Productivity
If higher frequency bands are used to increase throughput, then data transmission capacity increases, but susceptibility to rain and weather attenuation increases
Solution Approach 1:
The patent implements feedback mechanisms that monitor channel quality indicators and rain attenuation levels in real-time, using this information to dynamically adjust the selected frequency band and communication parameters, thereby maintaining high throughput while avoiding excessive vulnerability to weather conditions
Solution Approach 2:
The system uses an intermediary reconfiguration process that acts as a mediator between the high-throughput Q-band and the more reliable Ka-band, dynamically selecting which band to use based on current atmospheric conditions, thus allowing the system to leverage the benefits of both bands without being permanently exposed to their respective drawbacks
3Productivity
If dynamic inroute and outroute reconfiguration is implemented to optimize resource allocation, then system capacity increases, but processing complexity increases
Solution Approach 1:
The patent segments the reconfiguration process into distinct phases: identifying highly active terminals, determining band ratios, evaluating inroute conditions, and selecting optimal configurations. This segmentation allows the complex processing to be broken into manageable steps that can be executed systematically without overwhelming the system
Data Source
AI summary
Systems and methods for a satellite communication system include identifying highly active terminals (HUTs) in a spot beam of a satellite; determining a first ratio of single-band HUTs that operate in a first frequency band only to multi-band HUTs that operate in the first frequency band and a second frequency band; and determining a second ratio of outroutes for the first frequency band to outroutes for the second frequency band. When the first ratio is less than the second ratio, a first step of balancing the single-band HUTs across the outroutes for the first frequency band is performed, and then the multi-band HUTs are balanced across both the outroutes for the first frequency band and the outroutes for the second frequency band. When the first ratio is greater than the second ratio, the single-band HUTs and the multi-band HUTs are allocated based on at least one weight factor.