Our paper "Segment Routing based on Geographic Checkpoints" has been accepted at the ACM Workshop on LEO Networking and Communication (LEO-NET) 2024, co-located with ACM MobiCom! This work proposes a novel routing approach for LEO satellite networks that leverages geographic checkpoints to enable efficient segment routing, particularly well-suited for the dynamic nature of LEO constellations.
The paper addresses key challenges in LEO satellite routing including rapidly moving satellites requiring adaptive routing, geographic awareness for better routing decisions, flexible path selection through segment routing, and maintaining low overhead while staying efficient. LEO satellite networks have unique characteristics like predictable satellite orbits known in advance, specific coverage patterns, opportunities for latency optimization by minimizing ground-station hops, and load balancing across the constellation. Geographic checkpoints allow routing to account for all these factors.
LEO-NET has become the premier venue for LEO satellite networking research since its inaugural workshop at SIGCOMM 2023 in Madrid, with the second edition at MobiCom 2024 and the third planned for SIGCOMM 2025. The workshop is helping build a vibrant research community around LEO satellite networks, bringing together technical papers on routing, measurements, and applications with industry perspectives and panel discussions on future directions.
This research opens several directions for future work including integration with terrestrial routing protocols, multi-constellation routing scenarios, security and privacy considerations, and real-world deployment experiences.
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