Fairness-Aware Utility Maximization for Multi-UAV-Aided Terrestrial Networks

IF 5.3 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Nishant Gupta;Satyam Agarwal;Aymen Fakhreddine
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引用次数: 0

Abstract

Integrating unmanned aerial vehicles (UAVs) with terrestrial networks can enable high-speed communication in various applications. UAVs can serve as aerial base stations (ABSs), offering several benefits to the existing terrestrial networks, such as enhanced coverage, increased capacity, rapid deployment, and mobile communication support. However, this integration presents various technical challenges, including coordination, interference management, and dynamic allocation of resources. To address these key challenges, in this paper, we maximize the network utility by jointly optimizing the scheduling and cell association, transmit power of all base stations, and ABS deployment locations in the presence of co-channel interference. A two-stage approach is proposed to obtain a solution. In the first stage, we propose a heuristic solution by using the clustering algorithm to determine the initial ABS locations and user scheduling while ignoring the co-channel interference. In the second stage, we utilize the solution obtained in the first part and develop an interference-aware iterative scheme to jointly optimize user scheduling, resource allocation, and ABS placement. Given the non-convex nature of this problem, we employ the successive convex approximation technique to approximate the non-convex objectives and constraints. Numerical results show the proposed approach's insights and effectiveness over other schemes. Specifically, our proposed approach provides an average of 25% improvement over the benchmark schemes.
多无人机辅助地面网络的公平意识效用最大化
将无人飞行器(UAV)与地面网络相结合,可以在各种应用中实现高速通信。无人飞行器可作为空中基站(ABS),为现有地面网络提供多种优势,如增强覆盖、提高容量、快速部署和移动通信支持。然而,这种整合带来了各种技术挑战,包括协调、干扰管理和资源的动态分配。为了应对这些关键挑战,本文通过联合优化调度和小区关联、所有基站的发射功率以及共信道干扰情况下的 ABS 部署位置,实现网络效用的最大化。本文提出了一种分两个阶段的解决方案。在第一阶段,我们提出了一种启发式解决方案,利用聚类算法确定初始 ABS 位置和用户调度,同时忽略同频干扰。在第二阶段,我们利用第一部分获得的解决方案,开发了一种干扰感知迭代方案,以联合优化用户调度、资源分配和 ABS 位置。鉴于该问题的非凸性质,我们采用了连续凸近似技术来近似非凸目标和约束条件。数值结果表明,与其他方案相比,我们提出的方法具有独到的见解和有效性。具体来说,我们提出的方法比基准方案平均提高了 25%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
9.60
自引率
0.00%
发文量
25
审稿时长
10 weeks
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