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Wireless Communication Systems: Prospects and Challenges
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Wireless Communication Systems: Prospects and Challenges

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Communications".

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 11222

Special Issue Editor

Prof. Dr. Diogo Gomes

E-Mail Website
Guest Editor
Instituto de Telecomunicações, Universidade de Aveiro, 3810-193 Aveiro, Portugal
Interests: networks; service platforms; M2M; computer networks
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wireless communication systems play a vital role in the digitalization of our economy, from Industrial IoT to Smart Homes, also covering smart cities and smart transportation; additionally, they are responsible for gathering data and information from the real world into smart systems living in the Cloud. This Special Issue aims to cover advances in existing wireless communications technologies used by sensors such as Bluetooth, Zigbee, and LoRa, but also NB-IoT and heterogeneous systems.

In this Special Issue, we wish to identify advances and new opportunities that make use of wireless communication systems to overcome existing challenges in the digitalization of systems and processes, with services and applications deployed on wireless communication systems also being the focus of the issue.

Prof. Dr. Diogo Gomes
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • industrial
  • IoT
  • smart cities
  • smart transportation
  • smart home
  • digital twins

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Published Papers (4 papers)

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Research

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16 pages, 5529 KiB  
Article
Analysis of Wi-SUN FAN Network Formation Time
by Ananias Ambrosio Quispe, Rodrigo Jardim Riella, Luciana Michelotto Iantorno, Leonardo Santanna Mariani and Evelio M. Garcia Fernandez
Sensors 2024, 24(4), 1142; https://doi.org/10.3390/s24041142 - 9 Feb 2024
Viewed by 1164
Abstract
The Wi-SUN FAN (Wireless Smart Ubiquitous Network Field Area Network) standard is attracting great interest in various applications such as smart meters, smart cities and Internet of Things (IoT) devices due to the attractive features that the standard offers, such as multihop and [...] Read more.
The Wi-SUN FAN (Wireless Smart Ubiquitous Network Field Area Network) standard is attracting great interest in various applications such as smart meters, smart cities and Internet of Things (IoT) devices due to the attractive features that the standard offers, such as multihop and mesh topologies, a relatively high data rate, frequency hopping, and interoperability between manufacturers. However, the process of connecting nodes in Wi-SUN FAN networks, which includes discovering, joining, and forming the network, has been shown to be slow, especially in multihop environments, which has motivated research and experimentation to analyze this process. In the existing literature, to measure network formation time, some authors have performed experiments with up to 100 devices, which is a costly and time-consuming methodology. Others have used simulation tools that are difficult to replicate, because little information is available about the methodology used or because they are proprietary. Despite these efforts, there is still a lack of information to adequately assess the formation time of Wi-SUN FAN networks, since the experimental tests reported in the literature are expensive and time-consuming. Therefore, alternatives such as computer simulation have been explored to speed up performance analysis in different scenarios. With this perspective, this paper is focused on the implementation of the Wi-SUN FAN network formation process using the Contiki-NG open source operating system and the Cooja simultor, where a functionality was added that makes it possible to efficiently analyze the network performance, thereby facilitating the implementation of new techniques to reduce network training time. The simulation tool was integrated into Contiki-NG and has been used to estimate the network formation times in various indoor environments. The correspondence between the experimental and numerical results obtained shows that our proposal is efficient to study the formation process of this type of networks. Full article
(This article belongs to the Special Issue Wireless Communication Systems: Prospects and Challenges)
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21 pages, 5890 KiB  
Article
Comparison of Representative Microservices Technologies in Terms of Performance for Use for Projects Based on Sensor Networks
by Piotr Plecinski, Nataliia Bokla, Tamara Klymkovych, Mykhailo Melnyk and Wojciech Zabierowski
Sensors 2022, 22(20), 7759; https://doi.org/10.3390/s22207759 - 13 Oct 2022
Cited by 4 | Viewed by 2340
Abstract
Reading and analyzing data from sensors are crucial in many areas of life. IoT concepts and related issues are becoming more and more popular, but before we can process data and draw conclusions, we need to think about how to design an application. [...] Read more.
Reading and analyzing data from sensors are crucial in many areas of life. IoT concepts and related issues are becoming more and more popular, but before we can process data and draw conclusions, we need to think about how to design an application. The most popular solutions today are microservices and monolithic architecture. In addition to this choice, there is also the question of the technology in which you will work. There are more and more of them on the market and in each of them it is practically possible to achieve similar results, but the difference lies in how quickly it will be possible and whether the approach invented will turn out to be the most optimal. Making the right decisions at the beginning of application development can determine its path to success or failure. The main goal of this article was to compare technologies used in applications based on microservice architecture. The preparation of a book lending system, whose server part was implemented in three different versions, each using a different type of technology, helped to achieve this goal. The compared solutions were: Spring Boot, Micronaut and Quarkus. The reason for this research was to investigate projects using sensor networks, ranging from telemedicine applications to extensive sensor networks collecting scientific data, or working in an environment with limited resources, e.g., with BLE or WIFI transmitters, where it is critical to supply energy to these transmitters. Therefore, the issue of efficiency and hence energy savings may be a key issue depending on the selected programming technology. Full article
(This article belongs to the Special Issue Wireless Communication Systems: Prospects and Challenges)
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Review

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19 pages, 7201 KiB  
Review
Emerging MIMO Technologies for 6G Networks
by Victoria Dala Pegorara Souto, Plínio Santini Dester, Michelle Soares Pereira Facina, Daniely Gomes Silva, Felipe Augusto Pereira de Figueiredo, Gustavo Rodrigues de Lima Tejerina, José Cândido Silveira Santos Filho, Juliano Silveira Ferreira, Luciano Leonel Mendes, Richard Demo Souza and Paulo Cardieri
Sensors 2023, 23(4), 1921; https://doi.org/10.3390/s23041921 - 8 Feb 2023
Cited by 25 | Viewed by 5025
Abstract
The demand for wireless connectivity has grown exponentially over the last years. By 2030 there should be around 17 billion of mobile-connected devices, with monthly data traffic in the order of thousands of exabytes. Although the Fifth Generation (5G) communications systems present far [...] Read more.
The demand for wireless connectivity has grown exponentially over the last years. By 2030 there should be around 17 billion of mobile-connected devices, with monthly data traffic in the order of thousands of exabytes. Although the Fifth Generation (5G) communications systems present far more features than Fourth Generation (4G) systems, they will not be able to serve this growing demand and the requirements of innovative use cases. Therefore, Sixth Generation (6G) Networks are expected to support such massive connectivity and guarantee an increase in performance and quality of service for all users. To deal with such requirements, several technical issues need to be addressed, including novel multiple-antenna technologies. Then, this survey gives a concise review of the main emerging Multiple-Input Multiple-Output (MIMO) technologies for 6G Networks such as massive MIMO (mMIMO), extremely large MIMO (XL-MIMO), Intelligent Reflecting Surfaces (IRS), and Cell-Free mMIMO (CF-mMIMO). Moreover, we present a discussion on how some of the expected key performance indicators (KPIs) of some novel 6G Network use cases can be met with the development of each MIMO technology. Full article
(This article belongs to the Special Issue Wireless Communication Systems: Prospects and Challenges)
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Other

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29 pages, 2227 KiB  
Tutorial
Cost-Efficient Network Planning for the Cross-Border Baltic Corridor—A Study
by Osama Elgarhy, Muhammad Mahtab Alam, Anet Tammets, Priit Roosipuu, Guntis Ancāns, Guntars Saidāns, Jurijs Tutovs, Klāvs Saliņš, Aleksandrs Vērdiņš, Māris Aleksandrovs, Arnis Peršēvics, Dainis Zariņš, Mart Uusmaa, Ove Uhtlik and Priit Soom
Sensors 2023, 23(19), 8111; https://doi.org/10.3390/s23198111 - 27 Sep 2023
Viewed by 1422
Abstract
Performing 5G coverage planning across borders introduces real-life challenges related to legalities, intercountry agreements, and binding documents. This work provides RF network modelling exercise results to provide uninterrupted 5G coverage to the Via Baltica and Rail Baltica transport corridors crossing Estonia and Latvia [...] Read more.
Performing 5G coverage planning across borders introduces real-life challenges related to legalities, intercountry agreements, and binding documents. This work provides RF network modelling exercise results to provide uninterrupted 5G coverage to the Via Baltica and Rail Baltica transport corridors crossing Estonia and Latvia and on the border with Lithuania, as well as the Tallinn–Tartu–Valga and Valka–Valga roads (Latvia–Estonia), capable of cross-border 5G services. The study starts by identifying and interviewing stakeholders from different sectors of operation in the Baltic states and Europe and then provides an overview of some of the main legal acts and documents regulating the electronic communications sector in the Baltic states and Europe. Furthermore, 5G network requirements are proposed. In addition, the necessary and existing passive and active infrastructure is described, including spectrum management-related analysis, where the RF bands 700 MHz and 3500 MHz are analysed. Finally, coverage planning is performed. The network modelling results aim to foresee the number of new sites that need to be built on the said transport corridors, also examining the existing infrastructure for such purposes. Additionally, an estimated timeline for building the new sites is provided. Full article
(This article belongs to the Special Issue Wireless Communication Systems: Prospects and Challenges)
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