论文标题
频谱共享UAV到UAV蜂窝通信的策略
Spectrum Sharing Strategies for UAV-to-UAV Cellular Communications
论文作者
论文摘要
在本文中，我们考虑了一个蜂窝网络部署，在该部署中，无人机（U2U）发射cee-uav（U2U）与蜂窝地面用户（GUE）的上行链路（UL）共存。我们的分析重点是比较两种频谱共享机制：i）覆盖层，其中可用的时频资源分为U2U和GUE通信的正交部分，以及II）底层，在两种链接类型中可以访问相同的资源，从而导致相互干扰。我们评估了所有链接及其相互作用的覆盖范围概率和速率，以确定最佳的频谱共享机制。除其他事项外，我们的结果表明，在具有大量无人机对的情况下，采用覆盖频谱共享似乎是维持UAV和高度GUE UL性能的最低保证率的最合适方法。我们还发现，增加U2U链接的密度会降低其在覆盖层中的速率 - 无人机仅受到其他无人机的干扰，但在底层中却没有显着 - 在Gue生成的干扰的影响是主导的。
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.
