Virtual Cell Based Resource Allocation for Efficient Frequency Utilization in Unmanned Aircraft Systems
Virtual Cell Based Resource Allocation for Efficient Frequency Utilization in Unmanned Aircraft Systems
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DOI：
10.1109/tvt.2017.2776240
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发表时间：
2018-04-01
影响因子：
6.8
通讯作者：
Miura, Ryu
中科院分区：
文献类型：
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作者：
Takaishi, Daisuke;Kawamoto, Yuichi;Miura, Ryu
最近，无人驾驶飞机系统（UAS）作为商业服务的新途径引起了人们的关注。利用无人驾驶飞机（UAs）的灵活机动性，可以在广泛的地区提供商业服务。然而，在UA与其地面站之间的无线通信中存在问题。当多个无人机在相邻空域内运行时，会发生无线通信冲突。对于这个问题，最有效的解决方案之一是使用时分多址（TDMA）方案来决定通信调度。此外，通过在空间上重用时隙，可以在有限的频带中在相邻空域内操作许多UA。在本文中，我们提出了一个有效的时隙分配，以提高频率资源利用率。我们提出的方案确定时隙分配考虑时隙空间重用，使用基于虚拟小区的空间划分方法。此外，我们考虑UA移动性对网络的影响，以决定所提出的资源分配系统的参数。我们提出的资源分配的有效性进行评估，通过基于计算机的模拟。
Recently, unmanned aircraft systems (UASs) have attracted attention as a new avenue for commercial services. Using the flexible mobility of unmanned aircrafts (UAs), commercial services can be operated in wide areas. However, there is a problem in the wireless communication between the UA and its ground station. When several UASs are operated within the neighboring airspace, wireless-communication conflicts occur. One of the most effective solutions for this issue is to decide the communication schedule using a time-division multiple access (TDMA) scheme. Furthermore, by spatially reusing the time slot, numerous UAs can be operated within the neighboring airspace, in a limited frequency band. In this paper, we propose an efficient time-slot allocation for enhancing the frequency resource utilization. Our proposed scheme determines the time-slot allocation considering the time-slot spatial reuse, using a virtual cell based space partitioning method. In addition, we consider the influence of the UA mobility on the network to decide the parameters for the proposed resource allocation system. The effectiveness of our proposed resource allocation is evaluated through computer-based simulation.