Wyniki wyszukiwania - BazTech

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Wykorzystanie rekonfigurowalnych inteligentnych matryc antenowych w łączy dosyłowym sieci 5G/6G wykorzystującej bezzałogowe statki powietrzne

Janji Salim, Sroka Paweł, Kliks Adrian

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2023

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nr 4

85--88

PL

Drony, dzięki możliwości ich szybkiego rozmieszczenia w trudnym terenie, uważane są za jeden z kluczowych elementów systemów bezprzewodowych 6G. Jednak w celu wykorzystania ich jako punkty dostępowe sieci konieczne jest zapewnienie łącza dosyłowego o odpowiedniej przepustowości. Dlatego w niniejszym artykule rozważane jest zwiększenie zasięgu sieci bezprzewodowej przez zapewnienie łącza dosyłowego dla końcowego punktu dostępowego z wykorzystaniem określonej liczby dronów-przekaźników oraz rekonfigurowalnych inteligentnych matryc antenowych (RIS). Zaprezentowane wyniki badań symulacyjnych pokazują, że użycie RIS pozwala na znaczące zwiększenie zasięgu sieci bez konieczności stosowania dodatkowych przekaźników.

EN

Unmanned Aerial Vehicles, due to the possibility of their fast deployment, are considered an essential element of the future wireless 6G communication systems. However, an essential enabler for their use as access points is to provide a sufficient throughput wireless backhaul link. Thus, in this paper we consider the aspect of extension of network coverage with the use of drone-based relaying and reconfigurable intelligent surfaces (RIS) for backhauling. Presented results of simulation experiments indicate that the use of RIS allows for significant improvement of network coverage without the need to use additional relays.

2

Hybrid FSO/mmWave wireless system : a plausible solution for 5G backhaul applications

Isanaka Lakshmi Priya, Meenakshi Murugappa

Opto-Electronics Review

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2022

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Vol. 30, No. 3

art. no. e141950

EN

The explosive rise of wireless services necessitates a network connection with high bandwidth, high performance, low mistakes, and adequate channel capacity. Individual mobile users, as well as residential and business clusters are increasingly using the internet and multimedia services, resulting in massive increases in the internet traffic demand. Over the past decade, internet traffic has grown significantly faster than Moore’s law predicted. The current system is facing significant radio frequency spectrum congestion and is unable to successfully transmit growing amounts of (available) data to end users while keeping acceptable delay values in mind. Free space optics is a viable alternative to the current radio frequency technology. This technology has a few advantages, including fast data speeds, unrestricted bandwidth, and excellent security. Since free space optics is invisible to traffic type and data protocol, it may be quickly reliably and profitably integrated into an existing access network. Despite the undeniable benefits of free space optics technology under excellent channel conditions and its wide range of applications, its broad use is hampered by its low link dependability, especially over long distances, caused by atmospheric turbulenceinduced decay and weather sensitivity. The best plausible solution is to establish a secondary channel link in the GHz frequency range that works in tandem with the primary free space optics link. A hybrid system that combines free space optics and millimeter wave technologies in this research is presented. The combined system offers a definitive backhaul maintenance, by drastically improving the link range and service availability.

3

The impact of transport time on the carrier’s costs

Poliak M., Hammer J., Jaśkiewicz M., Zielonka K., Stokłosa J.

New Trends in Production Engineering

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2018

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Vol. 1, Iss. 1

213--218

EN

In freight road transport, the price per unit of transport is not the same for each shipment for reason, that many factors influence the cost of shipping. An important aspect, in addition to cost inputs, which decides , how high will the shipping cost it is the destination where the transportation takes place. The purpose of this article is to identify the impact of the change of destination on carrier costs. Authors will not deal with specific costs related to the change of destination, which include, for example, charges for the use of the road network or travel compensation to the driver, but will only deal with the probability of vehicle back-up. If the carrier is unable to backhaul of the vehicle, the initial shipping costs increase significantly.