Throughput maximization for UAV-enabled full-duplex relay system in 5G communications

Liu, Xin; He, Dongyue; Ding, Hua

doi:10.1016/j.phycom.2018.11.014

Cited by 9 publications

(8 citation statements)

References 14 publications

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“…Recently, studies have been performed on the utilization of UAVs as relays [19], [20] because of the reduced cost of a UAV [3], [21] and compared to a conventional ground relay, using a UAV is advantageous owing to its mobility. These studies can be classified based on the method used to transmit and receive data.…”

Section: A Related Work and Motivationsmentioning

confidence: 99%

“…This process was performed in the Rayleigh channel and Rician channel. In [21], when a UAV performs FD relaying, its transmission power and trajectory were optimized to maximize the system throughput. In [23], by employing the SuR scheme in a UAV-aided relay system, the minimum rate obtained by the user is maximized using power allocation and relay selection.…”

Section: A Related Work and Motivationsmentioning

confidence: 99%

“…Accordingly, the ground-to-ground communication link between S and D is not configured, and each ground node can configure a line-of-sight (LOS) link with each aerial UAV. We assume that the Doppler effect can be ignored [21], [22]. Thus, a channel model can follow a free-space path loss model, and the channel gain between node i and node j can be represented as…”

Section: System Modelmentioning

confidence: 99%

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A Virtual Full-Duplex Relaying Scheme and Adjustment Algorithms for Enhancing Spectral Efficiency in UAV-Aided Communication Networks

Woo

Hwang

2023

IEEE Access

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Utilizing unmanned aerial vehicles (UAVs) as relays has great potential owing to their high mobility in communication networks. To fully exploit this mobility characteristic, we propose a UAVaided relaying scheme with a data ferrying protocol. By employing two UAVs, our proposed relaying scheme performs virtual full-duplex (FD) transmission to increase the end-to-end spectral efficiency (SE) performance. To further enhance the performance, we propose a center point adjustment algorithm and a transmit power adjustment algorithm. We evaluate the performance of our proposed adjustment algorithms by comparing the relaying schemes with and without the proposed adjustment algorithms. Simulation results show that our proposed relaying scheme with our proposed adjustment algorithms can achieve higher SE performance compared to conventional schemes.INDEX TERMS UAV, relay, virtual full-duplex, spectral efficiency.HO YOUNG HWANG (Member, IEEE) received the B.S., M.S., and Ph.D. degrees in electrical engineering and computer science from the Korea

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Section: A Related Work and Motivationsmentioning

confidence: 99%

Section: A Related Work and Motivationsmentioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%

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A Virtual Full-Duplex Relaying Scheme and Adjustment Algorithms for Enhancing Spectral Efficiency in UAV-Aided Communication Networks

Woo

Hwang

2023

IEEE Access

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“…In terms of energy, the HD technique consumes relatively minimal energy due to its low complexity. Although the FD technique can enhance the gain in throughput [114], it is uncertain whether FD can outperform HD in EE. A comparative study was conducted by Li et al [115] in 2018 to analyse both techniques.…”

Section: Promises Of Cognitive Radiomentioning

confidence: 99%

5G Technology: Towards Dynamic Spectrum Sharing Using Cognitive Radio Networks

et al. 2020

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The explosive popularity of small-cell and Internet of Everything devices has tremendously increased traffic loads. This increase has revolutionised the current network into 5G technology, which demands increased capacity, high data rate and ultra-low latency. Two of the research focus areas for meeting these demands are exploring the spectrum resource and maximising the utilisation of its bands. However, the scarcity of the spectrum resource creates a serious challenge in achieving an efficient management scheme. This work aims to conduct an in-depth survey on recent spectrum sharing (SS) technologies towards 5G development and recent 5G-enabling technologies. SS techniques are classified, and SS surveys and related studies on SS techniques relevant to 5G networks are reviewed. The surveys and studies are categorised into one of the main SS techniques on the basis of network architecture, spectrum allocation behaviour and spectrum access method. Moreover, a detailed survey on cognitive radio (CR) technology in SS related to 5G implementation is performed. For a complete survey, discussions are conducted on the issues and challenges in the current implementation of SS and CR, and the means to support efficient 5G advancement are provided.

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“…The algorithm is constrained by UAV speed, UAV collision avoidance, and energy neutrality of IoT devices. Liu et al [ 57 ] proposed a relay technique that takes advantage of UAV mobility and performance. The proposed technique aims at throughput maximization by optimizing UAV trajectory and transmission power.…”

Section: Related Workmentioning

confidence: 99%

Efficient Deployment with Throughput Maximization for UAVs Communication Networks

Sayeed

Kumar

Sharma

et al. 2020

Sensors

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The article presents a throughput maximization approach for UAV assisted ground networks. Throughput maximization involves minimizing delay and packet loss through UAV trajectory optimization, reinforcing the congested nodes and transmission channels. The aggressive reinforcement policy is achieved by characterizing nodes, links, and overall topology through delay, loss, throughput, and distance. A position-aware graph neural network (GNN) is used for characterization, prediction, and dynamic UAV trajectory enhancement. To establish correctness, the proposed approach is validated against optimized link state routing (OLSR) driven UAV assisted ground networks. The proposed approach considerably outperforms the classical approach by demonstrating significant gains in throughput and packet delivery ratio with notable decrements in delay and packet loss. The performance analysis of the proposed approach against software-defined UAVs (U-S) and UAVs as base stations (U-B) verifies the consistency and gains in average throughput while minimizing delay and packet loss. The scalability test of the proposed approach is performed by varying data rates and the number of UAVs.

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Throughput maximization for UAV-enabled full-duplex relay system in 5G communications

Cited by 9 publications

References 14 publications

A Virtual Full-Duplex Relaying Scheme and Adjustment Algorithms for Enhancing Spectral Efficiency in UAV-Aided Communication Networks

A Virtual Full-Duplex Relaying Scheme and Adjustment Algorithms for Enhancing Spectral Efficiency in UAV-Aided Communication Networks

5G Technology: Towards Dynamic Spectrum Sharing Using Cognitive Radio Networks

Efficient Deployment with Throughput Maximization for UAVs Communication Networks

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