Inter-Satellite Beam-Hopping Scheduling for Overlap Interference
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Solution Overview
Problem
In large-scale low-orbit satellite constellation systems, inter-satellite interference occurs when edge users are present in the overlapping service areas of two satellites, affecting overall throughput performance.
Innovation Solution
A method for inter-satellite beam-hopping scheduling that adjusts the beam-hopping pattern based on comparing edge user densities between satellites, allowing for optimized allocation of beam-hopping space-time resources and minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If satellites provide service in overlapping areas with fixed beam-hopping patterns, then service coverage is ensured, but inter-satellite interference increases and throughput performance deteriorates
Solution Approach 1:
The patent applies dynamics by making the beam-hopping pattern adjustable and adaptive rather than fixed. The scheduling method dynamically modifies beam-hopping patterns based on real-time edge user density comparisons between overlapping satellites, allowing the system to adapt to changing interference conditions while maintaining service coverage in overlapping areas.
Solution Approach 2:
The patent changes the parameter of beam-hopping pattern configuration based on edge user density. When one satellite detects higher edge user density in the overlapping area, it adjusts its beam-hopping pattern parameters to avoid time-frequency resources used by the other satellite, thereby reducing interference while maintaining coverage.
2Ease of operation
If satellites use fixed beam-hopping patterns in overlapping areas, then scheduling simplicity is maintained, but inter-satellite interference increases and affects overall system performance
Solution Approach 1:
The patent implements feedback mechanisms where satellites continuously monitor and compare edge user densities in overlapping areas. This feedback drives the dynamic adjustment of beam-hopping patterns, allowing the system to automatically optimize interference management while maintaining operational simplicity through standardized comparison and adjustment procedures.
Solution Approach 2:
Each satellite independently performs edge user density comparison and self-adjusts its beam-hopping pattern based on the comparison results. This self-service approach eliminates the need for complex centralized coordination while achieving effective interference mitigation through autonomous decision-making at each satellite.
3Reliability
If edge users are served in overlapping areas without coordination, then user service continuity is maintained, but interference between satellites increases and resource utilization decreases
Solution Approach 1:
The patent applies local quality by implementing differentiated resource allocation strategies for different spatial locations. In overlapping areas with edge users, satellites apply special beam-hopping pattern adjustments to reduce interference, while non-overlapping areas use standard patterns. This localized optimization maintains service continuity for edge users while improving overall resource utilization efficiency.
Data Source
AI summary
The present disclosure provides a method for inter-satellite beam-hopping scheduling, electronic device and storage medium. The method is applied to a first satellite, wherein service ranges of the first satellite and a second satellite have an overlapping area, and the method includes: comparing, in response to edge users existing in the overlapping area, a first edge user density of the first satellite and a second edge user density of the second satellite, before a next scheduling cycle starts; traversing, in response to the first edge user density being lower than the second edge user density, time slots in the next scheduling cycle, to determine whether to adjust a first beam-hopping pattern pre-determined for the first satellite; adjusting, in response to determining to adjust the first beam-hopping pattern, the first beam-hopping pattern to obtain a second beam-hopping pattern; and performing, in the next scheduling cycle, beam-hopping service for a traffic beam according to the second beam-hopping pattern.