BlockFLEX: An Adaptive and Survivable Architecture with Hierarchical Routing for LEO Satellite Networks
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866912756754546688 |
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| author | Wang, Xiangtong |
| author_facet | Wang, Xiangtong |
| contents | This paper presents \textbf{BlockFLEX}, an adaptive and survivable architecture with a hierarchical routing scheme for Low Earth Orbit satellite networks, designed to address dynamic topology changes and severe link failures.
By organizing satellites into autonomous blocks, BlockFLEX establishes a survivable underlay network that masks network volatility and offers a stable overlay view. The architecture employs a hierarchical routing scheme integrating both convergence-free geographic routing and convergence-isolated routing. Furthermore, BlockFLEX adaptively switches between stateful and stateless forwarding modes, enabling efficient, resilient, and stable routing via a dedicated protection mechanism and an optimized source satellite selection algorithm.
Experimental evaluations on current operational LEO satellite networks (LSNs) demonstrate that under scenarios with up to 30\% random link failures, the proposed method achieves a $2\times$ improvement in reachability compared to current leading schemes, while maintaining near-100\% routing availability. Moreover, the overhead of control messages and forwarding information base (FIB) updates remains below $0.2\%$ of that in OSPF, accompanied by a $\geq 36\%$ reduction in routing computation time and a $\geq 50\%$ decrease in latency jitter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_09453 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | BlockFLEX: An Adaptive and Survivable Architecture with Hierarchical Routing for LEO Satellite Networks Wang, Xiangtong Networking and Internet Architecture This paper presents \textbf{BlockFLEX}, an adaptive and survivable architecture with a hierarchical routing scheme for Low Earth Orbit satellite networks, designed to address dynamic topology changes and severe link failures. By organizing satellites into autonomous blocks, BlockFLEX establishes a survivable underlay network that masks network volatility and offers a stable overlay view. The architecture employs a hierarchical routing scheme integrating both convergence-free geographic routing and convergence-isolated routing. Furthermore, BlockFLEX adaptively switches between stateful and stateless forwarding modes, enabling efficient, resilient, and stable routing via a dedicated protection mechanism and an optimized source satellite selection algorithm. Experimental evaluations on current operational LEO satellite networks (LSNs) demonstrate that under scenarios with up to 30\% random link failures, the proposed method achieves a $2\times$ improvement in reachability compared to current leading schemes, while maintaining near-100\% routing availability. Moreover, the overhead of control messages and forwarding information base (FIB) updates remains below $0.2\%$ of that in OSPF, accompanied by a $\geq 36\%$ reduction in routing computation time and a $\geq 50\%$ decrease in latency jitter. |
| title | BlockFLEX: An Adaptive and Survivable Architecture with Hierarchical Routing for LEO Satellite Networks |
| topic | Networking and Internet Architecture |
| url | https://arxiv.org/abs/2512.09453 |