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The effective utilization of unlicensed spectrum is regarded as an important direction to enable the massive access and broad coverage for next-generation wireless local area network (WLAN). Due to the crowded spectrum occupancy and dense…

信号处理 · 电气工程与系统科学 2024-12-17 Xiangyu Pi , Lipeng Zhu , Haobin Mao , Zhenyu Xiao , Xiang-Gen Xia , Rui Zhang

This paper addresses the efficient management of Mobile Access Points (MAPs), which are Unmanned Aerial Vehicles (UAV), in 5G networks. We propose a two-level hierarchical architecture, which dynamically reconfigures the network while…

网络与互联网体系结构 · 计算机科学 2023-07-14 Esteban Catté , Mohamed Sana , Mickael Maman

5G and beyond networks need to provide dynamic and efficient infrastructure management to better adapt to time-varying user behaviors (e.g., user mobility, interference, user traffic and evolution of the network topology). In this paper, we…

网络与互联网体系结构 · 计算机科学 2023-03-15 Esteban Catté , Mohamed Sana , Mickael Maman

In this letter, we propose an energy-efficient 3-dimensional placement of multiple aerial access points (AAPs), in the desired area, acting as flying base stations for uplink communication from a set of ground user equipment (UE). The…

信号处理 · 电气工程与系统科学 2021-04-14 Nithin Babu , Constantinos B. Papadias , Petar Popovski

In this letter, we propose a six-dimensional movable antenna (6DMA)-aided cell-free massive multiple-input multiple-output (MIMO) system to fully exploit its macro spatial diversity, where a set of distributed access points (APs), each…

信息论 · 计算机科学 2024-12-03 Xiaoming Shi , Xiaodan Shao , Beixiong Zheng , Rui Zhang

Unmanned aerial vehicle (UAV) is being integrated as an active element in 5G and beyond networks. Because of its flexibility and mobility, UAV base stations (UAV-BSs) can be deployed according to the ground user distributions and their…

信号处理 · 电气工程与系统科学 2020-08-10 Xukai Zhong , Yiming Huo , Xiaodai Dong , Zhonghua Liang

In this paper, we propose a new six-dimensional (6D) movable antenna (6DMA) system for future wireless networks to improve the communication performance. Unlike the traditional fixed-position antenna (FPA) and existing fluid…

信息论 · 计算机科学 2024-04-02 Xiaodan Shao , Qijun Jiang , Rui Zhang

Six-dimensional movable antenna (6DMA) is an effective approach to improve wireless network capacity by adjusting the 3D positions and 3D rotations of distributed antenna surfaces based on the users' spatial distribution and statistical…

信息论 · 计算机科学 2024-03-27 Xiaodan Shao , Rui Zhang , Qijun Jiang , Robert Schober

This work proposes a framework for the robust design of UAV-assisted wireless networks that combine 3D trajectory optimization with user mobility prediction to address dynamic resource allocation challenges. We proposed a sparse…

信号处理 · 电气工程与系统科学 2025-06-12 Asad Mahmood , Thang X. Vu , Wali Ullah Khan , Symeon Chatzinotas , Björn Ottersten

Despite the prevalence of wireless connectivity in urban areas around the globe, there remain numerous and diverse situations where connectivity is insufficient or unavailable. To address this, we introduce mobile wireless infrastructure on…

In this paper, we study the joint 3D placement of unmanned aerial vehicles (UAVs) and UAVs-users association under bandwidth limitation and quality of service constraint. In particular, in order to allow to UAVs to dynamically improve their…

信号处理 · 电气工程与系统科学 2018-10-30 Hajar El Hammouti , Mustapha Benjillali , Basem Shihada , Mohamed-Slim Alouini

Unmanned Aerial Vehicles (UAVs) promise to become an intrinsic part of next generation communications, as they can be deployed to provide wireless connectivity to ground users to supplement existing terrestrial networks. The majority of the…

信号处理 · 电气工程与系统科学 2021-11-04 Boris Galkin , Babatunji Omoniwa , Ivana Dusparic

Unmanned aerial vehicle (UAV)-assisted communications is a promising solution to improve the performance of future wireless networks, where UAVs are deployed as base stations for enhancing the quality of service (QoS) provided to ground…

信号处理 · 电气工程与系统科学 2020-08-10 Xukai Zhong , Yiming Huo , Xiaodai Dong , Zhonghua Liang

The rapid increasing demand of wireless transmission has incurred mobile broadband to continuously evolve through multiple frequency bands, massive antennas and other multi-stream processing schemes. Together with the improved data…

信号处理 · 电气工程与系统科学 2019-01-21 Shunqing Zhang , Chenlu Xiang , Shan Cao , Shugong Xu , Jiang Zhu

The need for a rapid-to-deploy solution for providing wireless cellular services can be realized by unmanned aerial vehicle base stations (UAV-BSs). To the best of our knowledge, this letter is the first in literature that studies a novel…

信息论 · 计算机科学 2017-09-18 Mohamed Alzenad , Amr El-Keyi , Halim Yanikomeroglu

Large-scale distributed antenna systems with many access points (APs) that serve the users by coherent joint transmission is being considered for 5G-and-beyond networks. The technology is called Cell-free Massive MIMO and can provide a more…

信息论 · 计算机科学 2020-06-30 Trinh Van Chien , Emil Björnson , Erik G. Larsson

Efficient aerial data collection is important in many remote sensing applications. In large-scale monitoring scenarios, deploying a team of unmanned aerial vehicles (UAVs) offers improved spatial coverage and robustness against individual…

机器人学 · 计算机科学 2023-03-03 Jonas Westheider , Julius Rückin , Marija Popović

Evolving next-generation mobile networks is designed to provide ubiquitous coverage and networked sensing. With utility of multi-view sensing and multi-node joint transmission, cell-free is a promising technique to realize this prospect.…

网络与互联网体系结构 · 计算机科学 2024-12-11 Fanfei Xu , Shengheng Liu , Zihuan Mao , Shangqing Shi , Dazhuan Xu , Dongming Wang , Yongming Huang

Aerial base stations (ABSs) mounted on unmanned aerial vehicles (UAVs) are capable of extending wireless connectivity to ground users (GUs) across a variety of scenarios. However, it is an NP-hard problem with exponential complexity in $M$…

信息论 · 计算机科学 2025-05-06 Yiling Wang , Jiangbin Lyu , Liqun Fu

With the advantages of Millimeter wave in wireless communication network, the coverage radius and inter-site distance can be further reduced, the ultra dense network (UDN) becomes the mainstream of future networks. The main challenge faced…

网络与互联网体系结构 · 计算机科学 2020-04-20 Zhipeng Cheng , Minghui LiWangy , Ning Chen , Hongyue Lin , Zhibin Gao , Lianfen Huang
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