Satellite Repeater Dynamic Beam Capacity Adjustment
Solution Overview
Problem
The existing satellite communication systems, particularly those employing a 'bent-pipe' repeater, are unable to change the capacity of communication beams after satellite launch, limiting flexibility in data transmission capacity.
Innovation Solution
A satellite communication system that allows for dynamic adjustment of beam capacity post-launch by using a satellite repeater capable of reconfiguring frequency and polarization allocation between user link and feeder link beams, enabling flexible frequency reuse and allocation through a communication network control station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a bent-pipe type satellite repeater is used, then the satellite communication system can be implemented with simple signal relay, but the capacity that may be communicated by the beam cannot be changed after satellite launching
Solution Approach 1:
The patent implements dynamic reconfigurability in the satellite repeater by introducing a switch unit that can dynamically change the connection between user link beams and feeder link beams after satellite launch. This allows the beam capacity and frequency allocation to be adjusted according to traffic demands, resolving the contradiction between simple implementation and post-launch flexibility.
Solution Approach 2:
The patent enables parameter changes by allowing the satellite repeater to dynamically alter frequency allocation, polarization assignment, and beam connection relationships after launch. The control unit receives instructions to modify these parameters, enabling the system to adapt beam capacity without requiring physical changes to the satellite structure.
2Stability of the object's composition
If frequency and polarization allocation is fixed after satellite launching, then the satellite system structure remains simple and stable, but the system cannot optimize data transmission capacity according to changing traffic demands
Solution Approach 1:
The patent introduces dynamic reconfiguration capability that allows the satellite repeater to adjust frequency and polarization allocation in real-time based on traffic demands. The switch unit and control unit work together to dynamically optimize beam capacity while maintaining system stability through controlled management of these changes.
Solution Approach 2:
The patent implements a feedback mechanism where the control unit receives instructions from external control stations about traffic conditions and systematically adjusts frequency and polarization allocation accordingly. This feedback loop enables the system to optimize data transmission capacity while maintaining stable operation through controlled adaptation.
3Device complexity
If the satellite repeater uses fixed beam connections, then the system structure is simplified, but the capacity optimization and frequency reuse flexibility are limited
Solution Approach 1:
The patent resolves this contradiction by implementing a dynamic switch unit that can reconfigure beam connections on-demand. The switch unit maintains a simple physical structure but provides dynamic reconfiguration capability, allowing frequent changes in beam capacity and frequency allocation without increasing physical complexity.
Solution Approach 2:
The patent enables flexible frequency reuse by allowing dynamic changes in frequency and polarization assignment parameters. The control unit can instruct the switch unit to reconfigure connections to optimize frequency reuse patterns, achieving high adaptability without requiring complex physical structures.
Data Source
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AI summary
In a satellite communication system to relay communication between a terminal (502) and a gateway (505) installed on the ground through a satellite repeater (503), the satellite repeater (503) forms a user link beam for communicating with the terminal (502) and a feeder link beam for communicating with the gateway (505) in a same area, and changes frequency or polarization association with respect to each of the user link beam and the feeder link beam, based on a traffic situation. Thus, a capacity that can be communicated by the beam may be changed after satellite launching.