Optimizing the coexistence between HAPS platform and terrestrial system in 5.8GHz band

Mokayef, Mastaneh; Hassan, Walid A.; Rahman, Tharek Abd; Ahmad, Yassir A.

doi:10.1109/iccce.2012.6271337

Cited by 4 publications

(3 citation statements)

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“…The study indicates that a separation distance of 120-160 km is necessary to achieve I/N = −6 dB. A similar consideration is made in [14] regarding the separation distance between HAPS and terrestrial systems in the 5.8 GHz band. However, it is important to note that the coexistence scenario examined in [13] and [14], which determines the required separation distance, is not suitable for more complex scenarios such as disaster recovery situations involving overlapping HAPS and terrestrial systems.…”

Section: A Related Workmentioning

confidence: 58%

“…A similar consideration is made in [14] regarding the separation distance between HAPS and terrestrial systems in the 5.8 GHz band. However, it is important to note that the coexistence scenario examined in [13] and [14], which determines the required separation distance, is not suitable for more complex scenarios such as disaster recovery situations involving overlapping HAPS and terrestrial systems. As mentioned in [13], future work could involve the implementation of intelligent beamforming methods by HAPSs to mitigate interference and potentially reduce the required separation distance.…”

Section: A Related Workmentioning

confidence: 99%

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HAPS Cell Design Method for Coverage Extension Considering Coexistence on Terrestrial Mobile Networks

Shibata,

Takabatake,

Hoshino

et al. 2024

IEEE Access

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High-altitude platform stations (HAPSs) that provide direct communication services to smartphones on the ground are garnering significant attention as innovative mobile communication platforms suitable for ultrawide coverage areas. The deployment of a multi-cell configuration is essential for enhancing communication capacity over large geographical regions. However, designing and optimizing multi-cell configurations proves challenging due to the numerous antenna parameters involved, such as beamwidth and beam direction. HAPSs also hold promise in serving as reliable networks during disasters, as they can quickly restore coverage when terrestrial base stations (BSs) are in failure, allowing users to maintain connectivity via HAPSs using the same frequency band as terrestrial networks. Despite this advantage, HAPSs can potentially cause interference in terrestrial networks during such scenarios, necessitating careful considerations to avoid disrupting existing terrestrial networks. However, the optimization of cell configurations in the coexistence of HAPSs and terrestrial networks remains largely unexplored. To address this gap, this paper proposes a design scheme that leverages a genetic algorithm (GA) to optimize antenna parameters for each cell, thereby maximizing both user coverage and area coverage while ensuring coexistence with terrestrial networks. We optimize antenna parameters to increase user coverage and area coverage as a multi-objective optimization problem, resulting in a Pareto front that illustrates the trade-off choices. Additionally, the proposed method protects terrestrial networks by setting the initial beam direction of each cell to avoid interference with terrestrial BSs. Consequently, the GA can initiate optimization with candidate combinations that adhere to the interference constraints of terrestrial networks, thus expediting the optimization process and yielding improved coverage. Simulation results demonstrate that the proposed scheme outperforms conventional schemes which solely control beam direction, leading to superior coverage. While the results show trade-off between user coverage and area coverage, it is also clarified that considering both types of coverage show the potential to achieve significant improvements in both aspects simultaneously. Moreover, the results highlight the efficacy of the initial beam direction setting in enhancing coverage rates and significantly reducing the number of combinations required for the GA to converge.INDEX TERMS Coverage Optimization, Genetic Algorithm, HAPS, Non-Uniform User Distribution, Coexistence between HAPS and terrestrial networks. I. INTRODUCTIONA high-altitude platform station (HAPS) holds immense potential for revolutionizing mobile communication services [1,2]. HAPS mobile communication relies on unmanned aerial vehicles (UAVs) such as balloons, airships, and other aircraft, operating in the stratosphere at an altitude of 20 km, where wind speeds are relatively low. Compared to communication satellites like stationary satellites (3...

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Section: A Related Workmentioning

confidence: 58%

Section: A Related Workmentioning

confidence: 99%

HAPS Cell Design Method for Coverage Extension Considering Coexistence on Terrestrial Mobile Networks

Shibata,

Takabatake,

Hoshino

et al. 2024

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Therefore, in the current spectrum division, there exists the coexistence of multiple systems. For example, in the 5850–7075 MHz, the ground systems, microwave access, and HAP networks coexist [ 39 ]. In R2, the 24.25–27.5 GHz and 38–39.5 GHz bands are not only allocated to HAP but also the uplink and downlink of FSS [ 40 ].…”

Section: Current Spectrum Utilization Rulesmentioning

confidence: 99%

Spectrum Sharing in the Sky and Space: A Survey

Zhang

Wei

Wang

et al. 2022

Sensors

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In order to achieve the vision of seamless wireless communication coverage, a space–air–ground integrated network is proposed as a key component of the sixth-generation (6G) mobile communication system. However, the spectrum used by aerial networks has become gradually crowded with the increase in wireless devices. Space networks are also in dire need of developing new bands to address spectrum shortages. As an effective way to solve the spectrum shortage problem, spectrum sharing between aerial/space networks and ground networks has been extensively studied. This article summarizes state-of-the-art studies on spectrum sharing between aerial/space networks and ground networks. First, this article provides an overview of aerial networks and space networks and introduces the main application scenarios of aerial networks and space networks. Then, this article summarizes the spectrum sharing techniques between aerial/space networks and ground networks, including existing spectrum utilization rules, spectrum sharing modes and key technologies. Finally, we summarize the challenges of spectrum sharing between aerial/space networks and ground networks. This article provides guidance for spectrum allocation and spectrum sharing of space–air–ground integrated networks.

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Joint power allocation and deployment optimization for HAP-assisted NOMA–MEC system

Zhang

Wang

et al. 2022

Wireless Netw

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Optimizing the coexistence between HAPS platform and terrestrial system in 5.8GHz band

Cited by 4 publications

References 1 publication

HAPS Cell Design Method for Coverage Extension Considering Coexistence on Terrestrial Mobile Networks

HAPS Cell Design Method for Coverage Extension Considering Coexistence on Terrestrial Mobile Networks

Spectrum Sharing in the Sky and Space: A Survey

Joint power allocation and deployment optimization for HAP-assisted NOMA–MEC system

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