Transceiver Design and Multihop D2D for UAV IoT Coverage in Disasters
Transceiver Design and Multihop D2D for UAV IoT Coverage in Disasters
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灾害中无人机物联网覆盖的收发器设计和多跳 D2D
DOI：
10.1109/jiot.2018.2877504
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发表时间：
2019-04-01
影响因子：
10.6
通讯作者：
Adachi, Fumiyuki
中科院分区：
文献类型：
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作者：
Liu, Xiaonan;Li, Zan;Adachi, Fumiyuki
当自然灾害发生时，由于通信基础设施受损，物联网（IoT）的覆盖范围可能会受到严重破坏。无人机（UAV）由于其移动性和灵活性，可以用作飞行基站，为物联网提供紧急覆盖。在本文中，我们提出了多天线收发器设计和多跳设备到设备（D2D）通信，以保证可靠的传输，并扩大灾害中物联网的无人机覆盖范围。首先，由于UAV的受限发射功率，建立多跳D2D链路以扩展UAV应急网络的覆盖。特别地，提出了一种最短路径路由算法，以最少的节点快速建立D2D链路。推导了上下行链路跳数和中断概率的解析解。其次，研究了无人机上行链路和下行链路的收发机设计，以优化无人机传输性能。由于问题的非凸性，他们首先转化为凸的，然后，低复杂度的算法，提出了有效地解决他们。仿真结果表明，在吞吐量和中断概率的性能提高所提出的方案无人机无线覆盖物联网在灾难。
When natural disasters strike, the coverage for Internet of Things (IoT) may be severely destroyed, due to the damaged communications infrastructure. Unmanned aerial vehicles (UAVs) can be exploited as flying base stations to provide emergency coverage for IoT, due to its mobility and flexibility. In this paper, we propose multiantenna transceiver design and multihop device-to-device (D2D) communication to guarantee the reliable transmission and extend the UAV coverage for IoT in disasters. First, multihop D2D links are established to extend the coverage of UAV emergency networks due to the constrained transmit power of the UAV. In particular, a shortest-path-routing algorithm is proposed to establish the D2D links rapidly with minimum nodes. The closed-form solutions for the number of hops and the outage probability are derived for the uplink and downlink. Second, the transceiver designs for the UAV uplink and downlink are studied to optimize the performance of UAV transmission. Due to the nonconvexity of the problem, they are first transformed into convex ones and then, low-complexity algorithms are proposed to solve them efficiently. Simulation results show the performance improvement in the throughput and outage probability by the proposed schemes for UAV wireless coverage of IoT in disasters.