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5G Networks and Wireless Communication Systems
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5G Networks and Wireless Communication Systems

A special issue of Information (ISSN 2078-2489). This special issue belongs to the section "Information and Communications Technology".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 11913

Special Issue Editor

Dr. Theofilos Chrysikos

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, University of Patras, GR26504 Patras, Greece
Interests: 5G and beyond; convergence of optical and wireless networks; wireless broadband systems; channel modeling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The MDPI journal Information is inviting submissions to a Special Issue on “5G Networks and Wireless Communication Systems”.

5G is entering its first phase of implementation. Fall/Winter 2020 marks the launch of the first 5G networks in various countries across the globe, with 3.5 GHz as the key carrier frequency for 5G deployment in the microwave region. This provides many challenges not only for system designers but also for operators and regulators. Our knowledge of the fundamental deterministic and stochastic phenomena in the microwave region is counterbalanced by the limitations in bandwidth and resources, as well as the need to maintain existing 4G/4G+ infrastructure where small cell/backhaul has provided rates up to 700 Mbps.

The deployment of 5G faces many challenges, including spectrum assignment, resource allocation, IPv6-based user classification over content, NfV and cloud, mobile-edge computing, and metro/core optical backhaul, as well as access/fronthaul for implementing “fiber to the antenna” broadband connectivity, RRH deployment over urban obstacle-dense topologies, cell densification, and optimal power control. In addition, the smart world applications and solutions that 5G is meant to implement and support range from mobile health to smart cities and transportation, with many open issues and challenges.

In this very demanding and resourceful field, researchers from academia and industry are welcome to submit original research work as well as review articles and surveys in the Special Issue.

Topics of Interest include (but are not limited to):

  • 5G regulatory and administrative issues;
  • 5G spectrum licensing, leasing, and allocation;
  • 5G over cm/mm-wave: Can it still happen?
  • Channel modeling and noise measurements over 3.5 GHz;
  • Wi-Fi as complementary 5G backhaul;
  • Ultra-wide-band (UWB) channel characterization for 5G;
  • RRH/antenna deployment and cell densification;
  • Fiber to the antenna: 5G access;
  • Metro/core backhaul network design;
  • Smart/mobile health and 5G;
  • Ultra-low latency for 5G solutions;
  • Smart cities and transportation: The 5G angle;
  • 5G and mobile-edge computing/fog;
  • Software-defined networking for 5G;
  • IPv6-based user classification;
  • User content and spectrum allocation;
  • Co-existence with 4G/4G+ infrastructure;
  • Hybrid terrestrial-satellite backhaul for 5G;
  • 5G and maritime communications;
  • PPDR services and 5G;
  • 5G and wireless information-theoretic security.

Dr. Theofilos Chrysikos
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Information is an international peer-reviewed open access monthly 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 1600 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

  • 5G
  • Metro/core
  • Access networks
  • Fiber to the antenna
  • Channel modeling
  • User classification
  • Hybrid terrestrial–satellite backhaul
  • Smart solutions and applications
  • Ultra-low latency

Related Special Issue

Published Papers (5 papers)

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Research

18 pages, 3214 KiB  
Article
QoS-Aware Resource Management in 5G and 6G Cloud-Based Architectures with Priorities
by Spiros (Spyridon) Louvros, Michael Paraskevas and Theofilos Chrysikos
Information 2023, 14(3), 175; https://doi.org/10.3390/info14030175 - 09 Mar 2023
Cited by 4 | Viewed by 2081
Abstract
Fifth-generation and more importantly the forthcoming sixth-generation networks have been given special care for latency and are designed to support low latency applications including a high flexibility New Radio (NR) interface that can be configured to utilize different subcarrier spacings (SCS), slot durations, [...] Read more.
Fifth-generation and more importantly the forthcoming sixth-generation networks have been given special care for latency and are designed to support low latency applications including a high flexibility New Radio (NR) interface that can be configured to utilize different subcarrier spacings (SCS), slot durations, special scheduling optional features (mini-slot scheduling), cloud- and virtual-based transport network infrastructures including slicing, and finally intelligent radio and transport packet retransmissions mechanisms. QoS analysis with emphasis on the determination of the transmitted packets’ average waiting time is therefore crucial for both network performance and user applications. Most preferred implementations to optimize transmission network rely on the cloud architectures with star network topology. In this paper, as part of our original and innovative contribution, a two-stage queue model is proposed and analytically investigated. Firstly, a two-dimension queue is proposed in order to estimate the expected delay on priority scheduling decisions over the IP/Ethernet MAC layer of IP packet transmissions between gNB and the core network. Furthermore, a one-dimension queue is proposed to estimate the average packet waiting time on the RLC radio buffer before being scheduled mainly due to excessive traffic load and designed transmission bandwidth availability. Full article
(This article belongs to the Special Issue 5G Networks and Wireless Communication Systems)
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17 pages, 2797 KiB  
Article
RF Coverage Design for the Implementation of a Broadband Monitoring Service in the Context of 5G-Enabled Smart Cities
by Theofilos Chrysikos, Sotiria Gourna and Aikaterini Skouroliakou
Information 2023, 14(3), 156; https://doi.org/10.3390/info14030156 - 02 Mar 2023
Viewed by 1289
Abstract
As the recent COVID-19 pandemic has aptly demonstrated, emergency scenarios concerning public health and safety may require citizens to remain at home even as patients, potentially in the context of a municipal or national lockdown. Homestay patients may require real-time monitoring, which will [...] Read more.
As the recent COVID-19 pandemic has aptly demonstrated, emergency scenarios concerning public health and safety may require citizens to remain at home even as patients, potentially in the context of a municipal or national lockdown. Homestay patients may require real-time monitoring, which will offer not only communication but also empirical data and will contribute to developing their personalized electronic health record in knowledge bases. Our paper features an extensive RF coverage design for such a municipally deployed and administered 5G-enabled smart city network, supporting a broadband monitoring service. The antenna deployment for the outdoor urban topology is analytically described (for the downlink channel), and the intrinsic indoor propagation characteristics are considered for the uplink channel. A digital baseband signaling scheme is assumed on the basis of a user-customized health-related monitoring service. Path loss and fading calculations consider the potential worst-case propagation conditions so that the RF coverage will be reliable, leading to a resilient city-wide municipal network. Full article
(This article belongs to the Special Issue 5G Networks and Wireless Communication Systems)
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15 pages, 2697 KiB  
Article
MEC Computation Offloading-Based Learning Strategy in Ultra-Dense Networks
by Chunhong Duo, Peng Dong, Qize Gao, Baogang Li and Yongqian Li
Information 2022, 13(6), 271; https://doi.org/10.3390/info13060271 - 25 May 2022
Viewed by 2102
Abstract
Mobile edge computing (MEC) has the potential to realize intensive applications in 5G networks. Through migrating intensive tasks to edge servers, MEC can expand the computing power of wireless networks. Fifth generation networks need to meet service requirements, such as wide coverage, high [...] Read more.
Mobile edge computing (MEC) has the potential to realize intensive applications in 5G networks. Through migrating intensive tasks to edge servers, MEC can expand the computing power of wireless networks. Fifth generation networks need to meet service requirements, such as wide coverage, high capacity, low latency and low power consumption. Therefore, the network architecture of MEC combined with ultra-dense networks (UDNs) will become a typical model in the future. This paper designs a MEC architecture in a UDN, which is our research background. First, the system model is established in the UDN, and the optimization problems is proposed. Second, the action classification (AC) algorithm is utilized to filter the effective action in Q-learning. Then, the optimal computation offloading strategy and resource allocation scheme are obtained using a deep reinforcement learning-based AC algorithm, which is known as the DQN-AC algorithm. Finally, the simulation experiments show that the proposed DQN-AC algorithm can effectively reduce the system weighted cost compared with the full local computation algorithm, full offloading computation algorithm and Q-learning algorithm. Full article
(This article belongs to the Special Issue 5G Networks and Wireless Communication Systems)
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24 pages, 682 KiB  
Article
Analysis of Power Allocation for NOMA-Based D2D Communications Using GADIA
by Husam Rajab, Fatma Benkhelifa and Tibor Cinkler
Information 2021, 12(12), 510; https://doi.org/10.3390/info12120510 - 08 Dec 2021
Cited by 10 | Viewed by 2956
Abstract
The new era of IoT brings the necessity of smart synergy for diverse communication and computation entities. The two extremes are, on the one hand, the 5G Ultra-Reliable Low-Latency Communications (URLLC) required for Industrial IoT (IIoT) and Vehicle Communications (V2V, V2I, V2X). While [...] Read more.
The new era of IoT brings the necessity of smart synergy for diverse communication and computation entities. The two extremes are, on the one hand, the 5G Ultra-Reliable Low-Latency Communications (URLLC) required for Industrial IoT (IIoT) and Vehicle Communications (V2V, V2I, V2X). While on the other hand, the Ultra-Low Power, Wide-Range, Low Bit-rate Communications, such as Sigfox, LoRa/LoRaWAN, NB-IoT, Cat-M1, etc.; used for smart metering, smart logistics, monitoring, alarms, tracking applications. This extreme variety and diversity must work in synergy, all inter-operating/inter-working with the Internet. The communication solutions must mutually cooperate, but there must be a synergy in a broader sense that includes the various communication solutions and all the processing and storage capabilities from the edge cloud to the deep-cloud. In this paper, we consider a non-orthogonal multiple access (NOMA)-based device to device (D2D) communication system coexisting with a cellular network and utilize Greedy Asynchronous Distributed Interference Avoidance Algorithm (GADIA) for dynamic frequency allocation strategy. We analyze a max–min fairness optimization problem with energy budget constraints to provide a reasonable boundary rate for the downlink to all devices and cellular users in the network for a given total transmit power. A comprehensive simulation and numerical evaluation is performed. Further, we compare the performance of maximum achievable rate and energy efficiency (EE) at a given spectral efficiency (SE) while employing NOMA and orthogonal frequency-division multiple access (OFDMA). Full article
(This article belongs to the Special Issue 5G Networks and Wireless Communication Systems)
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13 pages, 3619 KiB  
Article
A Node Localization Algorithm for Wireless Sensor Networks Based on Virtual Partition and Distance Correction
by Yinghui Meng, Qianying Zhi, Minghao Dong and Weiwei Zhang
Information 2021, 12(8), 330; https://doi.org/10.3390/info12080330 - 16 Aug 2021
Cited by 8 | Viewed by 1974
Abstract
The coordinates of nodes are very important in the application of wireless sensor networks (WSN). The range-free localization algorithm is the best method to obtain the coordinates of sensor nodes at present. Range-free localization algorithm can be divided into two stages: distance estimation [...] Read more.
The coordinates of nodes are very important in the application of wireless sensor networks (WSN). The range-free localization algorithm is the best method to obtain the coordinates of sensor nodes at present. Range-free localization algorithm can be divided into two stages: distance estimation and coordinate calculation. For reduce the error in the distance estimation stage, a node localization algorithm for WSN based on virtual partition and distance correction (VP-DC) is proposed in this paper. In the distance estimation stage, firstly, the distance of each hop on the shortest communication path between the unknown node and the beacon node is calculated with the employment of virtual partition algorithm; then, the length of the shortest communication path is obtained by summing the distance of each hop; finally, the unknown distance between nodes is obtained according to the optimal path search algorithm and the distance correction formula. This paper innovative proposes the virtual partition algorithm and the optimal path search algorithm, which effectively avoids the distance estimation error caused by hop number and hop distance, and improves the localization accuracy of unknown nodes. Full article
(This article belongs to the Special Issue 5G Networks and Wireless Communication Systems)
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