Conclusion

In this paper, we present FALCON, which makes full use of multipath in mesh-like LEO satellite networks to accelerate the constellation-wide EO data delivery process, especially for urgent cases. We first formulate the Constellation-wide EO data Multipath Download (CEOMD) problem which is proved to be NP-hard. Then we propose a heuristic multipath routing and bandwidth allocation algorithm to ensure low path contention among sources and shorten the overall data delivery completion time. Extensive evaluations show that our method is scalable and can be at least 51% faster than the state-of-the-art methods under different constellation settings.

本文提出了FALCON框架，该框架充分利用网格状LEO卫星网络中的多路径特性，以加速星座级的对地观测（EO）数据传输过程，尤其适用于紧急情况。我们首先构建了 星座级对地观测数据多路径下载（CEOMD）问题 ，并证明了该问题是 NP-Hard 的。

接着，我们提出了一种启发式多路径路由与带宽分配算法，以确保源节点间较低的路径竞争，并缩短总体数据传输完成时间。大量的评估结果表明，在不同的星座配置下，我们的方法具有良好的可扩展性，并且比当前最先进的方法快至少51%