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arXiv 2008.10993eess.SPcs.ITmath.IT
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无人机间蜂窝通信的频谱共享策略

Spectrum Sharing Strategies for UAV-to-UAV Cellular Communications

M. Mahdi Azari, Giovanni Geraci, Adrian Garcia-Rodriguez, Sofie Pollin

摘要:

在这篇文章中,我们考虑一个蜂窝网络部署,其中无人机到无人机(U2 U)发射-接收对与蜂窝地面用户(GUE)的上行链路(UL)共存。我们的分析集中于比较两种频谱共享机制:i)覆盖,其中可用的时间-频率资源被分成用于U2 U和GUE通信的正交部分,以及ii)重叠,其中相同的资源可以由两种链路类型访问,导致相互干扰。我们评估所有链路的覆盖概率和速率及其相互作用,以确定最佳频谱共享机制。除其他事项外,我们的研究结果表明,在大量的无人机对的情况下,采用重叠频谱共享似乎是最合适的方法,以保持最低的保证率为无人机和高GUE UL性能。我们还发现,增加U2 U链路的密度会降低其覆盖率,其中无人机只接收来自其他无人机的干扰,但在GUE产生的干扰的影响占主导地位的情况下,并不显着。

英文摘要:

In this article, we consider a cellular network deployment where UAV-to-UAV (U2U) transmit-receive pairs coexist with the uplink (UL) of cellular ground users (GUEs). Our analysis focuses on comparing two spectrum sharing mechanisms: i) overlay, where the available time-frequency resources are split into orthogonal portions for U2U and GUE communications, and ii) underlay, where the same resources may be accessed by both link types, resulting in mutual interference. We evaluate the coverage probability and rate of all links and their interplay to identify the best spectrum sharing mechanism. Among other things, our results demonstrate that, in scenarios with a large number of UAV pairs, adopting overlay spectrum sharing seems the most suitable approach for maintaining a minimum guaranteed rate for UAVs and a high GUE UL performance. We also find that increasing the density of U2U links degrades their rates in the overlay-where UAVs only receive interference from other UAVs-, but not significantly so in the underlay -- where the effect of GUE-generated interference is dominant.

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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