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arXiv 2204.01433cs.ITeess.SPmath.IT
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卫星网络的动态网络编码设计

Dynamic Network-Code Design for Satellite Networks

Itay Shrem, Ben Grinboim, OFer Amrani

摘要:

随着巨型星座中的卫星不再是虚构的,从太空接入互联网的机会再次出现。网络容量受到功率和计算复杂性约束以及其他挑战的影响,是这种类型网络的主要目标。这项工作研究网络编码中存在的动态变化的网络条件。广义无环网络的概念被引入,并用于促进线性多播网络代码的生成被认为是一个循环网络。几个网络编码方案的性能,其中包括已知的静态网络代码,由STK仿真的通信卫星群,概念上的铱系统的基础上进行评估。利用先验知识的网络拓扑结构随着时间的推移,新的网络编码方法,其目的是更好地应对时变,动态行为的网络。它表明,在所有情况下,与我们的示例网络,静态网络代码的表现相比,所提出的方法。此外,一个有效的测试,以确定最合适的编码方法。

英文摘要:

Internet access from space enjoys renaissance as satellites in Mega-Constellations is no longer fictitious. Network capacity, subject to power and computational complexity constraints among other challenges, is a major goal in this type of networks. This work studies Network Coding in the presence of dynamically changing network conditions. The notion of generalized acyclic network is introduced and employed for promoting the generation of linear-multicast network code for what is considered to be a cyclic network. The performance of several network coding schemes, among these is the known static network code, is evaluated by a STK simulation for a swarm of communicating satellites, conceptually based on the Iridium system. Exploiting the prior knowledge of the networks topology over time, new network coding approaches are described, whose aim is to better cope with the time-varying, dynamic behavior of the network. It is demonstrated that in all cases, pertaining to our example network, static network codes under-perform compared to the presented approach. In addition, an efficient test for identifying the most appropriate coding approach is presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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