Joint Placement, Power Control, and Spectrum Allocation for UAV Wireless Backhaul Networks

Unmanned aerial vehicle (UAV) communication is a promising technology to yield great benefits for 5G wireless networks and beyond. In this paper, we investigate the downlink transmission in wireless backhaul networks when a UAV is deployed as the flying base station. A joint optimization problem of UAV’s placement, spectrum allocation, and power control is formulated, which is an NP-hard problem. To solve the above-mentioned problem efficiently, we propose decomposing the underlying problem into two subproblems, which are then solved alternatively in an iterative manner. Simulation results under various settings are provided to demonstrate the performance improvement of the proposed algorithm over baseline schemes.

[1]  H. Vincent Poor,et al.  Power Allocation for Energy Efficiency and Secrecy of Wireless Interference Networks , 2018, IEEE Transactions on Wireless Communications.

[2]  Jian Yu,et al.  Joint 3D UAV Placement and Resource Allocation in Software-Defined Cellular Networks With Wireless Backhaul , 2019, IEEE Access.

[3]  Xiaojiang Chen,et al.  Resource Allocation in Reverse TDD Wireless Backhaul HetNets With 3D Massive Antennas , 2018, IEEE Wireless Communications Letters.

[4]  Chadi Assi,et al.  Joint Location and Beamforming Design for Cooperative UAVs With Limited Storage Capacity , 2019, IEEE Transactions on Communications.

[5]  Zhi-Quan Luo,et al.  Dynamic Spectrum Management: Complexity and Duality , 2008, IEEE Journal of Selected Topics in Signal Processing.

[6]  Walid Saad,et al.  A Tutorial on UAVs for Wireless Networks: Applications, Challenges, and Open Problems , 2018, IEEE Communications Surveys & Tutorials.

[7]  Sung Joon Maeng,et al.  3-D Trajectory Optimization in UAV-Assisted Cellular Networks Considering Antenna Radiation Pattern and Backhaul Constraint , 2020, IEEE Transactions on Aerospace and Electronic Systems.

[8]  Wessam Ajib,et al.  A Novel Cooperative NOMA for Designing UAV-Assisted Wireless Backhaul Networks , 2018, IEEE Journal on Selected Areas in Communications.

[9]  Stephen P. Boyd,et al.  Convex Optimization , 2004, Algorithms and Theory of Computation Handbook.

[10]  Qingqing Wu,et al.  Joint Trajectory and Communication Design for Multi-UAV Enabled Wireless Networks , 2017, IEEE Transactions on Wireless Communications.

[11]  Wessam Ajib,et al.  Joint Beamforming and Location Optimization for Cooperative Content-Aware UAVs , 2019, 2019 IEEE Wireless Communications and Networking Conference (WCNC).

[12]  Gordon P. Wright,et al.  Technical Note - A General Inner Approximation Algorithm for Nonconvex Mathematical Programs , 1978, Oper. Res..

[13]  Abdurrahman Fouda,et al.  Interference Management in UAV-Assisted Integrated Access and Backhaul Cellular Networks , 2019, IEEE Access.

[14]  H. Vincent Poor,et al.  UAV-Enabled Communication Using NOMA , 2018, IEEE Transactions on Communications.

[15]  Victor C. M. Leung,et al.  Distributed Virtual Resource Allocation in Small-Cell Networks With Full-Duplex Self-Backhauls and Virtualization , 2015, IEEE Transactions on Vehicular Technology.

[16]  Bo Huang,et al.  Spectral and Energy Efficient Resource Allocation for Massive MIMO HetNets With Wireless Backhaul , 2019, IEEE Wireless Communications Letters.

[17]  Min Sheng,et al.  Energy Efficiency and Spectral Efficiency Tradeoff in Interference-Limited Wireless Networks , 2013, IEEE Communications Letters.

[18]  Geoffrey Ye Li,et al.  Joint User Association and Spectrum Allocation for Small Cell Networks With Wireless Backhauls , 2016, IEEE Wireless Communications Letters.

[19]  Won-Joo Hwang,et al.  UAV Communications for Sustainable Federated Learning , 2021, IEEE Transactions on Vehicular Technology.

[20]  Zhi-Quan Luo,et al.  Spectrum Management for Interference-Limited Multiuser Communication Systems , 2009, IEEE Transactions on Information Theory.

[21]  Zhiguo Ding,et al.  A Survey of Multi-Access Edge Computing in 5G and Beyond: Fundamentals, Technology Integration, and State-of-the-Art , 2019, IEEE Access.

[22]  Xu Jiang,et al.  Power Consumption Minimization of UAV Relay in NOMA Networks , 2020, IEEE Wireless Communications Letters.

[23]  Jie Xu,et al.  UAV-Enabled Cellular Networks with Multi-Hop Backhauls: Placement optimization and Wireless Resource Allocation , 2018, 2018 IEEE International Conference on Communication Systems (ICCS).