Special Issue "Access Technology in 5G and Mobile Communication Networks"

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Networks".

Deadline for manuscript submissions: 30 November 2020.

Special Issue Editors

Prof. Dr. Wooseong Kim
Website
Guest Editor
Computer Engineering Department, Gachon University, Seongnam 461-701, Korea
Interests: multi-hop ad hoc networks; LTE and 5G wireless telecommunication systems; wireless LAN; SDN/NFV; IoT protocols
Prof. Dr. Andreas Kassler
Website
Guest Editor
Department of Computer Science, Karlstad University, 65188 Karlstad, Sweden
Interests: network (function) virtualization; autonomic networking; future internet; 5G; wireless networks; network optimization
Prof. Dr. Enrica Zola
Website
Guest Editor
Department of Network Engineering, Polytechnic University of Catalonia, 08034 Barcelona, Spain
Interests: 5G; IEEE 802.11; Network processes optimization; ad-hoc networks; auto organized networks; cellular networks; green networking; localization; mobility patterns; wireless heterogeneous networks

Special Issue Information

Dear Colleagues,

During the last decade, 5G technology has been developed and successfully commercialized for mobile communication networks. 5G technology supports enhanced mobile broadband (eMBB) communication, massive machine type communications (mMTC) for Internet of Things (IoT), devices and ultra-reliable low-latency communication (URLLC) for mission-critical devices with IMT-2020 standard aims. 

Some key technologies, such as 5G numerology with new radio (NR) waveform in sub- or above 6 GHz (mmWave) bands and MIMO with beamforming, allow those heterogeneous devices or services to overcome their own challenging scenarios. Still, 5G access technology has further challenges, as it is now evolving with convergence technologies, such as autonomously driven vehicles, smart factories, satellite or UAS, public safety, etc. This 5G+ demands more bandwidth, connectivity, and reliability.   

Wireless communications in the Terahertz (THz) frequency band and unlicensed bands such as private 5G are considered to provide ultra-high user data rates. Further, nonorthogonal multiple access (NOMA) schemes have been explored for spectral efficiency and massive connectivity. V2X communication using mmWave side-links is not under-standardized. 5G and 6G now consider interoperation of GEO or LEO satellites and UAS to control autonomous vehicles, including drones, and provide wide-area cells for public safety or content broadcast. This nationwide cell can improve reliability and service continuity. As 5G+ pursues more than low-latency end-to-end access delay (<1 ms), mobile edge computing (MEC) has received attention in terms of supporting the requirements of network function virtualization (NFV) and software-defined networking (SDN) to improve performance.  

This Special Issue will present the most recent advances with respect to the theoretical foundations and practical implementation of 5G access communication and its evolution. Prospective authors are cordially invited to submit their original manuscripts on topics including but not limited to:         

  • Sub- or above 6 GHz radio access technologies for 5G+       
  • V2X communication using mmWave links     
  • NOMA for 5G and beyond wireless networks      
  • THz communications for 5G+ eMBB    
  • Fog and MEC architecture for 5G access networks     
  • Machine learning aided Fog and MEC operation    
  • (Massive) multiple-input–multiple-output (MIMO) for a 5G+ access network      
  • SDN-assist admission control in a 5G access network     
  • Multi-connectivity and co-existence in satellite/UAS and a 5G network    
  • Private 5G access network by dynamic spectrum access (DSA)
  • Localization issue in indoor or city cayon

Prof. Dr. Wooseong Kim
Prof. Dr. Andreas Kassler
Prof. Dr. Enrica Zola
Guest Editors

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 papers will be 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. Electronics 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 1500 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

  • Sub- or above 6 GHz radio access technologies for 5G+
  • V2X communication using mmWave links
  • NOMA for 5G and beyond wireless networks
  • THz communications for 5G+ eMBB
  • Fog and MEC architecture for 5G access networks
  • Machine learning aided Fog and MEC operation
  • (Massive) multiple-input–multiple-output (MIMO) for a 5G+ access network
  • SDN-assist admission control in a 5G access network
  • Multi-connectivity and co-existence in satellite/UAS and a 5G network
  • Private 5G access network by dynamic spectrum access (DSA)
  • Localization issue in indoor or city cayon

Published Papers (3 papers)

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Research

Open AccessArticle
KQI Performance Evaluation of 3GPP LBT Priorities for Indoor Unlicensed Coexistence Scenarios
Electronics 2020, 9(10), 1701; https://doi.org/10.3390/electronics9101701 - 16 Oct 2020
Abstract
The rapid proliferation of user devices with access to mobile broadband has been a challenge from both the operation and deployment points of view. With the incorporation of new services with high demand for bandwidth such as video in 4K, it has been [...] Read more.
The rapid proliferation of user devices with access to mobile broadband has been a challenge from both the operation and deployment points of view. With the incorporation of new services with high demand for bandwidth such as video in 4K, it has been deemed necessary to expand the existing capacity by including new bands, among which the unlicensed 5-GHz band is a very promising candidate. The operation of future 3GPP (Third Generation Partnership Project) mobile network standards deployments in this band implies the coexistence with other technologies such as WiFi, which is widespread. In this context, the provision of Quality of Service (QoS) or Quality of Experience (QoE) becomes an essential asset and is a challenge that has yet to be overcome. In this sense, 3GPP has proposed a traffic prioritization method based on the Listen Before Talk access parameters, defining a series of priorities. However, it does not specify how to make use of them, and even less so in potentially conflicting situations. This paper assesses the end-to-end performance of downlink unlicensed channel priorities in dense scenarios via implementing a novel simulation setup in terms of both multi-service performance and coexistence. Full article
(This article belongs to the Special Issue Access Technology in 5G and Mobile Communication Networks)
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Open AccessArticle
Max–Min Fairness Optimization for D2D Communications Coexisting with Cellular Networks
Electronics 2020, 9(9), 1422; https://doi.org/10.3390/electronics9091422 - 02 Sep 2020
Abstract
This paper considers a system consisting of a nonorthogonal multiple access (NOMA)-based device-to-device (D2D) communication system within a cellular network, in which the time and frequency resources are shared by everyone. In particular, D2D groups that constitute different pairs are assigned to the [...] Read more.
This paper considers a system consisting of a nonorthogonal multiple access (NOMA)-based device-to-device (D2D) communication system within a cellular network, in which the time and frequency resources are shared by everyone. In particular, D2D groups that constitute different pairs are assigned to the subchannels that the cellular users occupy. A max–min fairness optimization problem with power budget constraints is formulated and solved in this paper to reduce the mutual interference between the cellular users and D2D devices that substantially impacts that with the worst channel condition. For a low computational complexity solution, we propose the use of the bisection method together with the solution of a system of linear equalities. The proposed algorithm can provide uniformly good service to all of the cellular users and D2D devices in the coverage area by utilizing the minimal total transmit power. The simulation results indicate the effectiveness of the proposed algorithm in the improvement of the spectral efficiency of the worst user under the different widely used subchannel assignments and pairing techniques. Full article
(This article belongs to the Special Issue Access Technology in 5G and Mobile Communication Networks)
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Open AccessArticle
Passive Round-Trip-Time Positioning in Dense IEEE 802.11 Networks
Electronics 2020, 9(8), 1193; https://doi.org/10.3390/electronics9081193 - 24 Jul 2020
Abstract
The search for a unique and globally available location solution has attracted researchers for a long time. However, a solution for indoor scenarios, where high accuracy is needed, and Global Positioning System (GPS) is not available, has not been found yet. Despite the [...] Read more.
The search for a unique and globally available location solution has attracted researchers for a long time. However, a solution for indoor scenarios, where high accuracy is needed, and Global Positioning System (GPS) is not available, has not been found yet. Despite the number of proposals in the literature, some require too long a calibration time for constructing the fingerprinting map, some rely on the periodic broadcast of positioning information that may downgrade the data communication channel, while others require specific hardware components that are not expected to be carried on commercial off-the-shelf (COTS) wireless devices. The scalability of the location solution is another key parameter for next-generation internet of things (IoT) and 5G scenarios. A passive solution for indoor positioning of WiFi devices is first introduced here, which merges a time-difference of arrival (TDOA) algorithm with the novel fine time measurements (FTM) introduced in IEEE 802.11mc. A proof of concept of the WiFi passive TDOA algorithm is detailed in this paper, together with a thorough discussion on the requirements of the proposed algorithm. Full article
(This article belongs to the Special Issue Access Technology in 5G and Mobile Communication Networks)
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