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Electronics
Special Issues
Multimedia Content Delivery over Mobile Networks
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Multimedia Content Delivery over Mobile Networks

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

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 8408

Special Issue Editors

Prof. Dr. Manuel Perez Malumbres

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Guest Editor
Department of Computer Engineering, Miguel Hernandez University, Elche, Spain
Interests: multihop wireless networks; image and video coding; wireless video delivery; multimedia protocols; parallel computing
Prof. Dr. Carlos Tavares Calafate

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Guest Editor
Computer Engineering Department (DISCA), Universitat Politècnica de València (UPV), 46022 Valencia, Spain
Interests: UAV networking and communications solutions; drone swarms; UAS traffic management (UTM); IoT; Traffic management
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Glenn Van Wallendael

E-Mail Website
Guest Editor
Department of Electronics and Information Systems, Ghent University, Ghent, Belgium
Interests: immersive audiovisual representation and transmission; emerging multimedia formats; standardization of audiovisual formats

Special Issue Information

Dear Colleagues,

The volume and variety of multimedia content and related services have been growing at an impressive speed in recent years. One enabling factor is the proliferation of powerful portable devices, such as embedded systems, smartphones, tablets, laptops, drones, and head-mounted displays equipped with small high resolution cameras and multihomed wireless network interfaces (3G/4G/5G, BT, WiFi, even WiMax). This fact allows people to create multimedia content in a simple way, thus dramatically enlarging the population of multimedia “producers” and “consumers” of high-quality and high-definition (HQ/HD) multimedia content. Mobile multimedia applications such as online gaming, video conferencing, video streaming, 3D/360 video, immersive content, and peer-to-peer streaming are examples of highly demanding applications that will be fully supported in the near future over a great number of mobile devices.

Thus, several technological challenges need to be addressed to pave the way for this kind of applications towards their deployment in latest-generation mobile devices. Therefore, efficient multimedia representation/coding, wireless delivery, cross-layer design, quality of service (network and application), low complexity algorithms, and power-aware networking are some of the areas that may be responsible of the success of multimedia content delivery services.

The objective of this Special Issue is to bring together state-of-the-art research contributions that address the key aspects of multimedia content delivery over mobile networks. Specific topics include but are not limited to the following:

  • Multimedia representation and compression, such as the coding of image, video, and immersive modalities;
  • Low-complexity multimedia coding algorithms;
  • Real-time reliable multimedia streaming;
  • QoS provisioning in heterogeneous mobile networks;
  • Network scalability, mobility, and security issues;
  • Simulation models and tools for multimedia delivery;
  • Testbed and prototype implementations;
  • Emerging standards and technologies for wireless multimedia communications.
Prof. Dr. Manuel Perez Malumbres
Prof. Dr. Carlos Tavares Calafate
Prof. Dr. Glenn Van Wallendael
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 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. Electronics 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 2400 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

  • Efficient multimedia coding
  • Wireless delivery
  • QoS provisioning
  • Network security
  • Simulation models and tools
  • Multihop wireless network technologies

Published Papers (3 papers)

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Research

13 pages, 4131 KiB  
Article
Cross-Protocol Unfairness between Adaptive Streaming Clients over HTTP/3 and HTTP/2: A Root-Cause Analysis
by Chanh Minh Tran, Tho Nguyen Duc, Phan Xuan Tan and Eiji Kamioka
Electronics 2021, 10(15), 1755; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics10151755 - 21 Jul 2021
Cited by 4 | Viewed by 2141
Abstract
With the introduction of HTTP/3, whose transport is no longer the traditional TCP protocol but the novel QUIC protocol, research for solutions to the unfairness of Adaptive Streaming over HTTP (HAS) has become more challenging. In other words, because of different transport layers, [...] Read more.
With the introduction of HTTP/3, whose transport is no longer the traditional TCP protocol but the novel QUIC protocol, research for solutions to the unfairness of Adaptive Streaming over HTTP (HAS) has become more challenging. In other words, because of different transport layers, the HTTP/3 may not be available for some networks and the clients have to use HTTP/2 for their HAS applications instead. Therefore, the scenario in which HAS over HTTP/3 (HAS/3) competes against HTTP/2 (HAS/2) must be considered seriously. However, there has been a shortage of investigations on the performance and the origin of the unfairness in such a cross-protocol scenario in order to produce proper solutions. Therefore, this paper provides a performance evaluation and root-cause analysis of the cross-protocol unfairness between HAS/3 and HAS/2. It is concluded that, due to differences in the congestion control mechanisms of QUIC and TCP, HAS/3 clients obtain larger congestion windows, thus requesting higher video bitrates than HAS/2. As the problem lies in the transport layer, existing client-side ABR-based solutions for the unfairness from the application layer may perform suboptimally for the cross-protocol case. Full article
(This article belongs to the Special Issue Multimedia Content Delivery over Mobile Networks)
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17 pages, 27115 KiB  
Article
Keyframe Insertion: Enabling Low-Latency Random Access and Packet Loss Repair
by Glenn Van Wallendael, Hannes Mareen, Johan Vounckx and Peter Lambert
Electronics 2021, 10(6), 748; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics10060748 - 22 Mar 2021
Cited by 12 | Viewed by 2952
Abstract
From a video coding perspective, there are two challenges when performing live video distribution over error-prone networks, such as wireless networks: random access and packet loss repair. There is a scarceness of solutions that do not impact steady-state usage and users with reliable [...] Read more.
From a video coding perspective, there are two challenges when performing live video distribution over error-prone networks, such as wireless networks: random access and packet loss repair. There is a scarceness of solutions that do not impact steady-state usage and users with reliable connections. The proposed solution minimizes this impact by complementing a compression-efficient video stream with a companion stream solely consisting of keyframes. Although the core idea is not new, this paper is the first work to provide restrictions and modifications necessary to make this idea work using the High-Efficiency Video Coding (H.265/HEVC) compression standard. Additionally, through thorough quantification, insight is provided on how to provide low-latency fast channel switching capabilities and error recovery at low quality impact, i.e., less than 0.94 average Video Multimethod Assessment Fusion (VMAF) score decrease. Finally, worst-case drift artifacts are described and visualized such that the reader gets an overall picture of using the keyframe insertion technique. Full article
(This article belongs to the Special Issue Multimedia Content Delivery over Mobile Networks)
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15 pages, 953 KiB  
Article
A Simulation Tool for Evaluating Video Streaming Architectures in Vehicular Network Scenarios
by Pedro Pablo Garrido Abenza, Manuel P. Malumbres, Pablo Piñol and Otoniel López Granado
Electronics 2020, 9(11), 1970; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics9111970 - 22 Nov 2020
Cited by 4 | Viewed by 2283
Abstract
An integrated simulation tool called Video Delivery Simulation Framework over Vehicular Networks (VDSF-VN) is presented. This framework is intended to allow users to conduct experiments related to video transmission in vehicular networks by means of simulation. Research on this topic requires the use [...] Read more.
An integrated simulation tool called Video Delivery Simulation Framework over Vehicular Networks (VDSF-VN) is presented. This framework is intended to allow users to conduct experiments related to video transmission in vehicular networks by means of simulation. Research on this topic requires the use of many independent tools, such as traffic and network simulators, intermediate frameworks, video encoders and decoders, converters, platform-dependent scripting languages, data visualisation packages and spreadsheets, and some other tasks are performed manually. The lack of tools necessary to carry out all these tasks in an integrated and efficient way formed the motivation for the development of the VDSF-VN framework. It is managed via two user-friendly applications, GatcomSUMO and GatcomVideo, which allow all the necessary tasks to be accomplished. The first is primarily used to build the network scenario and set up the traffic flows, whereas the second involves the delivery process of the whole video, encoding/decoding video, running simulations, and processing all the experimental results to automatically provide the requested figures, tables and reports. This multiplatform framework is intended to fill the existing gap in this field, and has been successfully used in several experimental tests of vehicular networks. Full article
(This article belongs to the Special Issue Multimedia Content Delivery over Mobile Networks)
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