Satellite Group Switching for Dense LEO Ground Capacity
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Solution Overview
Problem
In high-density (V)LEO satellite constellations, narrowing satellite beam sweeping angles to reduce overlapping serving areas increases ground capacity density but leads to high switching frequencies and overheads, while simple multi-coverage causes inter-satellite interference, limiting capacity improvement.
Innovation Solution
A communication method that groups satellites into clusters based on configuration information, associating each group with specific ground area units, reducing frequent switching and inter-satellite interference by decoupling switching frequencies from satellite scale.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the serving area of each satellite is narrowed to reduce overlapping, then ground capacity density is increased, but switching frequency is further increased causing very high switching overheads
Solution Approach 1:
The patent segments the satellite constellation into multiple groups, where each group is associated with a specific ground area unit. This segmentation allows the system to manage switching at the group level rather than individual satellite level, reducing switching frequency and overhead while maintaining high ground capacity density through optimized serving area coverage.
2Loss of time
If simple multi-coverage is used without narrowing beam sweeping angle, then switching frequency is maintained, but inter-satellite interference is caused and ground capacity is difficult to increase effectively
Solution Approach 1:
The patent applies local quality by associating specific satellite groups with specific ground area units, creating localized coverage zones. This allows different regions to be served by optimized satellite groups, reducing inter-satellite interference in each local area while maintaining overall high ground capacity through coordinated multi-coverage across different regions.
Data Source
AI summary
A communication method and a communication apparatus. The communication method includes: a first communication apparatus receives configuration information from a second communication apparatus, where the configuration information indicates at least one satellite group and at least one ground area unit associated with the at least one satellite group. The communication method further includes: the first communication apparatus performs switching between a plurality of satellites in a satellite group in the at least one satellite group based on the configuration information, where the first communication apparatus is in a ground area unit associated with the satellite group.