Comparing Capacity Gains of Static and UAV-Based Millimeter-Wave Relays in Clustered Deployments
Comparing Capacity Gains of Static and UAV-Based Millimeter-Wave Relays in Clustered Deployments
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DOI：
10.1109/iccworkshops49005.2020.9145216
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发表时间：
2020-06
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通讯作者：
Margarita Gapeyenko;Vitaly Petrov;D. Moltchanov;Shu-ping Yeh;N. Himayat;Sergey D. Andreev
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文献类型：
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作者：
Margarita Gapeyenko;Vitaly Petrov;D. Moltchanov;Shu-ping Yeh;N. Himayat;Sergey D. Andreev
未来的毫米波(MmWave)网络被设想在某些场景下大量利用中继节点来提高它们的性能。除了已经被3GPP视为主要关注点之一的固定式毫米波继电器外，社区最近开始探索基于无人机(UAV)的毫米波继电器的使用。这些空中节点在不同环境中的中继布置方面提供了更大的灵活性，以及优化部署高度的能力，从而最大化了小区性能。同时，基于无人机的中继器的使用给网络运营商带来了额外的部署复杂性和开支。在本文中，考虑到3GPP标准化的特定毫米波的传播、阻塞和资源分配，我们比较了静态和基于无人机的毫米波中继在不同场景下所带来的容量收益。对于每种中继类型，我们调查了人类用户的均匀分布和集群分布。所建立的数学框架和数值研究表明，在集群部署中，使用无人机中继器而不是静态中继器的容量增益最高(最高可达31%)，而在用户均匀分布的情况下，无人机中继器与静态毫米波中继器的性能差异仅为3%。
The prospective millimeter-wave (mmWave) networks are envisioned to heavily utilize relay nodes to improve their performance in certain scenarios. In addition to the stationary mmWave relays already considered by 3GPP as one of the main focuses, the community recently started to explore the use of unmanned aerial vehicle (UAV)-based mmWave relays. These aerial nodes provide greater flexibility in terms of the relay placement in different environments as well as the ability to optimize the deployment height thus maximizing the cell performance. At the same time, the use of UAV-based relays leads to additional deployment complexity and expenditures for the network operators. In this paper, taking into account 3GPP-standardized mmWave-specific propagation, blockage, and resource allocation we compare the capacity gains brought by the static and the UAV-based mmWave relays in different scenarios. For each of the relay types, we investigate both uniform and clustered distribution of human users. The developed mathematical framework and a numerical study reveal that the highest capacity gains when utilizing the UAV-based relays instead of the static ones are observed in clustered deployments (up to 31%), while the performance difference between the UAV-based and the static mmWave relays under a uniform distribution of users is just 3%.