Paving the way for economically accepted and technically pronounced smart radio environment

Salah, Mostafa; Pitsillides, Andreas; Mubarak, Ahmed S. A.

doi:10.23919/jcc.2022.08.018

Cited by 4 publications

(2 citation statements)

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“…In this case, we cannot have perfect control over the EM propagating beam, because the EM beam front grows continuously while the beam front cannot be confined by RIS with a reasonable surface dimension [44,45]. Also, we cannot have controlled RISs everywhere in the outdoor environment [46]. We have constraints on the number of RISs and their area.…”

Section: 3mentioning

confidence: 99%

“…Beam guiding and minimum RIS area Perfect channel adaptation scenarios may be easily realized in the indoor environment by covering walls and ceilings with RISs. However, in an outdoor environment, the main impediment to the realization of that scenario resides in the difficulty of the widespread realization of these surfaces on building facades and shops [46]. Covering the whole outdoor environment with such RISs is impractical from both economical and technological perspectives.…”

Section: 8mentioning

confidence: 99%

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PHY0 network: Metasurface as PHY-beam router, is it possible? Challenges and open problems

Salah¹,

Abdelaziem²,

Pitsillides³

2023

ITU J-FET

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A software-controlled metasurface is introduced as one of the key enablers of Sixth Generation (6G) communication. Some sort of wireless channel customization/ adaptation is allowed for the first time. As an extreme case for wireless channel adaptation, environmental beam routing has emerged for guiding Electromagnetic (EM) wireless transmission through multiple Reconfigured Intelligent Surfaces (RISs). This gives rise to instituting a new form of a physical networking layer (PHY0) that is hardly explored. Furthermore, there is a knowledge gap in the definition, functionalities, and limitations of the metasurface as a beam router. So, in this paper, we are aiming at highlighting the birth of a new physical layer networking technology. The environmental routing concept is introduced as an optimal wireless channel adaptation through "Open-air EM Guiding". Furthermore, the definition and functionality of RIS as an EM beam router are put forward as an ideal model. The limitations facing RIS in simulating the beam routing role are explored from the communication system viewpoint along with reviewing the state-of-the-art solutions resolving these limitations. Physicists and material engineers are motivated for providing better solutions for these challenges.

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Section: 3mentioning

confidence: 99%

Section: 8mentioning

confidence: 99%

PHY0 network: Metasurface as PHY-beam router, is it possible? Challenges and open problems

Salah¹,

Abdelaziem²,

Pitsillides³

2023

ITU J-FET

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RIS-Focus: On the Optimal Placement of the Focal Plane for Outdoor Beam Routing

2022

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Floating meta-bubbles: aerial gateway and routing on the sky

Salah

2024

J Wireless Com Network

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Reflecting intelligent surface technology (RIS) is regarded as a key enabler of the sixth-generation (6G) communication system. It provides the ability to reshape radio channels through passively reflecting beams in a reconstructive manner. Furthermore, aerial RIS (ARIS) introduces more flexibility in providing line-of-sight (LOS) links. Unfortunately, most of the related research efforts supposed the system as a planar RIS mounted on a satellite, unmanned aerial vehicle (UAV), or balloon despite reported limitations of planar RISs. The essential problem in designing any planar RIS network resides in mutual orientation and alignment difficulty, especially under random fluctuation of position/orientation due to wind conditions or UAV wobbling in the hover state. So, this paper highlights spherical RIS (bubble) as the optimal choice for aerial beam routing where the orientation/rotation can be completely relaxed. It outperforms planar RIS in terms of RIS networking flexibility, dead zone relaxation, and coverage extension. Consequently, due to the added degrees of freedom, many new deployment scenarios/use cases are recommended such as introducing meta-bubbles as intermediate gateways between satellite and ground nodes and extending network infrastructure installation down to the client level to enhance its visibility and throughput. Simulations demonstrate the superiority of meta-bubbles in minimizing channel loss over successive multi-hop routing.

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Paving the way for economically accepted and technically pronounced smart radio environment

Cited by 4 publications

References 0 publications

PHY0 network: Metasurface as PHY-beam router, is it possible? Challenges and open problems

PHY0 network: Metasurface as PHY-beam router, is it possible? Challenges and open problems

RIS-Focus: On the Optimal Placement of the Focal Plane for Outdoor Beam Routing

Floating meta-bubbles: aerial gateway and routing on the sky

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