Journal of Systems Engineering and Electronics ›› 2020, Vol. 31 ›› Issue (2): 231-242.doi: 10.23919/JSEE.2020.000001

• Electronics Technology •     Next Articles

Placement of unmanned aerial vehicles as communication relays in two-tiered multi-agent system: clustering based methods

Gaofeng WU(), Kaifang WAN*(), Xiaoguang GAO(), Xiaowei FU()   

  • Received:2019-04-11 Online:2020-04-30 Published:2020-04-30
  • Contact: Kaifang WAN E-mail:wgfnwpu@163.com;wankaifang@nwpu.edu.cn;cxg2012@nwpu.edu.cn;fxw@nwpu.edu.cn
  • About author:WU Gaofeng was born in 1991. He received his B.S. degree in detection homing and control technology from Northwestern Polytechnical University (NWPU) in 2012. He received his M.S. degree in system engineering from NWPU in 2015. He is currently a doctoral student in the Key Laboratory of Aerospace Information Perception and Photoelectric Control, Ministry of Education, NWPU. His research interests include UAV task planning, multi-agent systems, optimization and control of UAV-assisted communication networks and internet of things. E-mail: wgfnwpu@163.com|WAN Kaifang was born in 1987. He received his B.E. degree in detection homing and control technology and his Ph.D. degree in system engineering from Northwestern Polytechnical University (NWPU) in 2010 and 2016, respectively. He is currently an assistant researcher of the Key Laboratory of Aerospace Information Perception and Photoelectric Control, Ministry of Education, NPU. His research interests include sensor management application, multi-agent theory, approximate dynamic programming and reinforcement learning theory. E-mail: wankaifang@nwpu.edu.cn|GAO Xiaoguang was born in 1957. She received her B.E. degree in detection homing and control technology from Northwestern Polytechnical University (NWPU) in 1982. She received her master degree in system engineering from NWPU in 1986. She received her Ph.D. degree from NWPU in 1989. She is currently a professor and the head in the Key Laboratory of Aerospace Information Perception and Photoelectric Control, Ministry of Education, NWPU. Her research interests include machine learning theory, Bayesian network theory, and multi-agent control application. E-mail: cxg2012@nwpu.edu.cn|FU Xiaowei was born in 1976. He received his B.S., M.S., and Ph.D. degrees from the School of Electronics and Information, Northwestern Polytechnical University (NWPU) in 1998, 2001, and 2004, respectively. He was a postdoctoral fellow with NWPU from 2004 to 2007. He joined the School of Electronics and Information, in 2004 and became an associate professor, in 2007. His research interests include UAVs cooperative control and optimization, and intelligent optimization algorithm. E-mail: fxw@nwpu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(61573285);This work was supported by the National Natural Science Foundation of China (61573285)

Abstract:

The network performance and the unmanned aerial vehicle (UAV) number are important objectives when UAVs are placed as communication relays to enhance the multi-agent information exchange. The problem is a non-deterministic polynomial hard (NP-hard) multi-objective optimization problem, instead of generating a Pareto solution, this work focuses on considering both objectives at the same level so as to achieve a balanced solution between them. Based on the property that agents connected to the same UAV are a cluster, two clustering-based algorithms, M-K-means (MKM) and modified fast search and find density of peaks (MFSFDP) methods, are first proposed. Since the former algorithm requires too much computational time and the latter one requires too many relays, an algorithm for the balanced network performance and relay number (BPN) is proposed by discretizing the area to avoid missing the optimal relay positions and defining a new local density function to reflect the network performance metric. Simulation results demonstrate that the proposed algorithms are feasible and effective. Comparisons between these algorithms show that the BPN algorithm uses fewer relay UAVs than the MFSFDP and classic set-covering based algorithm, and its computational time is far less than the MKM algorithm.

Key words: unmanned aerial vehicle (UAV), relay, communication, clustering, relay node placement, wireless network