Caching in heterogeneous satellite networks with fountain codes,International Journal of Satellite Communications and Networking

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Caching in heterogeneous satellite networks with fountain codes
International Journal of Satellite Communications and Networking ( IF 0.9 ) Pub Date : 2019-08-13 , DOI: 10.1002/sat.1323
Estefanía Recayte ₁ , Francisco Lázaro ₁ , Gianluigi Liva ₁

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In this paper, we investigate the performance of caching schemes based on fountain codes in a heterogeneous satellite network. We consider multiple cache-aided hubs, which are connected to a geostationary satellite through backhaul links. With the aim of reducing the average number of transmissions over the satellite backhaul link, we propose the use of a caching scheme based on fountain codes. We derive a simple analytical expression of the average backhaul transmission rate and provide a tight upper bound on it. Furthermore, we show how the performance of the fountain code-based caching scheme is similar to that of a caching scheme based on maximum distance separable codes.

中文翻译：

使用喷泉码在异构卫星网络中缓存

在本文中，我们研究了异构卫星网络中基于喷泉码的缓存方案的性能。我们考虑多个缓存辅助集线器，它们通过回程链路连接到地球静止卫星。为了减少卫星回程链路上的平均传输次数，我们建议使用基于喷泉码的缓存方案。我们推导出平均回程传输速率的简单分析表达式，并提供了一个严格的上限。此外，我们展示了基于喷泉码的缓存方案的性能如何与基于最大距离可分离码的缓存方案的性能相似。

更新日期：2019-08-13

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