The growing popularity of mobile Internet and massive MTC with special traffic characteristics and locations have imposed huge challenges to current cellular networks. Deploying new base stations, however, becomes difficult and expensive, especially for complicated urban scenarios and MTC traffic. The UAV-assisted heterogeneous cellular solution is proposed in this article. It utilizes UAV-based floating relay (FR) to deploy FR cells inside the macrocell, and thus achieves dynamic and adaptive coverage. Comprehensive analyses on FR cells' deployment including frequency reuse, interference, backhaul resource allocation, and coverage are given.

中文翻译：

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异构蜂窝系统中无人机​​辅助的动态覆盖


移动互联网的日益普及和具有特殊流量特征和位置的海量MTC对当前的蜂窝网络提出了巨大的挑战。然而，部署新基站变得困难且昂贵，尤其是对于复杂的城市场景和 MTC 流量。本文提出了无人机辅助的异构蜂窝解决方案。它利用基于无人机的浮动中继（FR）在宏小区内部部署浮动中继小区，从而实现动态自适应覆盖。对FR小区的部署进行了全面的分析，包括频率复用、干扰、回程资源分配和覆盖。