A business and legislative perspective of V2X and mobility applications in 5G networks

Vehicle-to-everything (V2X) communication is a powerful concept that not only ensures public safety (e.g., by avoiding road accidents) but also offers many economic benefits (e.g., by optimizing the macroscopic behavior of the traffic across an area). On the one hand, V2X communication brings new business opportunities for many stakeholders, such as vehicle manufacturers, retailers, Mobile Network Operators (MNOs), V2X service providers, and governments. On the other hand, the convergence of these stakeholders to a common platform possesses many technical and business challenges. In this article, we identify the issues and challenges faced by V2X communications, while focusing on the business models. We propose different solutions to potentially resolve the identified challenges in the framework of 5G networks and propose a high-level hierarchy of a potential business model for a 5G-based V2X ecosystem. Moreover, we provide a concise overview of the legislative status of V2X communications across different regions in the world

Guest editorial: Time-critical communication and computation for intelligent vehicular networks

Vehicular networks are expected to empower auto mated driving and intelligent transportation via vehicle-to-everything (V2X) communications and edge/cloud-assisted computation, and in the meantime Cellular V2X (C-V2X) is gaining wide support from the global industrial ecosystem. The 5G NR-V2X technology is the evolution of LTE-V2X, which is expected to provide ultra-Reliable and Low-Latency Communications (uRLLC) with 1ms latency and 99.999% reliability. Nevertheless, vehicular networks still face great challenges in supporting many emerging time-critical applications, which comprise sensing, communication and computation as closed-loops

A contribution to the debate on the redefinition of the networked public sphere based on Portuguese public participation in cyberspace

This article locates Portugal in the discussion on the transition from a normative public sphere (Habermas, 1968/1989, 1998) to a new networked public sphere (Benkler, 2006), powered by the internet, global networked society and participative and interactive cultures. We use data from the public participation module of the 2018 Digital news report published by the Reuters Institute for the Study of Journalism, which surveyed a representative sample of the Portuguese population. The results point to the existence and appropriation of many forms of public participation in cyberspace. Users share news, comment on news, take part in online votes, etc., on press websites and social media. Nonetheless, the collected data point to a type of online public participation that determines the slow constitution and consolidation of a new networked public sphere in Portugal

IEEE Software Defined Network Initiative

This paper outlines a proposal for setting up an IEEE initiative on software defined networks (SDNs) to facilitate professional and academic exchange of SDN-related ideas, research, and development. The proposal is a result of an intensive effort of a team consisting of the authors. After a comprehensive gap analysis, gaps and key opportunities were identified. Finally, a specific set of components along with schedule and financial consideration were proposed in the areas of publications, conferences, standards, education, certification, and publicity

SDN/NFV-enabled satellite communications networks: opportunities, scenarios and challenges

In the context of next generation 5G networks, the satellite industry is clearly committed to revisit and revamp the role of satellite communications. As major drivers in the evolution of (terrestrial) fixed and mobile networks, Software Defined Networking (SDN) and Network Function Virtualisation (NFV) technologies are also being positioned as central technology enablers towards improved and more flexible integration of satellite and terrestrial segments, providing satellite network further service innovation and business agility by advanced network resources management techniques. Through the analysis of scenarios and use cases, this paper provides a description of the benefits that SDN/NFV technologies can bring into satellite communications towards 5G. Three scenarios are presented and analysed to delineate different potential improvement areas pursued through the introduction of SDN/NFV technologies in the satellite ground segment domain. Within each scenario, a number of use cases are developed to gain further insight into specific capabilities and to identify the technical challenges stemming from them.Peer ReviewedPostprint (author's final draft

Network functions virtualization: the long road to commercial deployments

Network operators are under pressure to offer efficient network-based services while keeping service deployment costs to a minimum. Network functions virtualization (NFV) can potentially revolutionize network-based services bringing low-deployment costs for network operators. The NFV has been introduced to ultimately extend the non-proprietary and open-standard-based model to network and service deployments, significant improvements to today’s proprietary locked implementations. Notwithstanding the continuous efforts of both academia and industry to support the NFV paradigm, the current NFV solutions offered are still in its infancy. In this survey, we provide a detailed background of NFV to establish a comprehensive understanding of the subject, ranging from the basics to more advanced topics. Moreover, we offer a comprehensive overview of the NFV main concepts, standardization efforts, the benefits of NFV, and discussions of the NFV architecture as defined by the European telecommunications standardization institute (ETSI). Furthermore, we discuss the NFV applicability and current open source projects. We then highlight NFV requirements, design considerations, and developmental architectural impairments and barriers to commercial NFV deployments. Finally, we conclude enumerating future directions for NFV developmentpublishe

Blockchain for the metaverse: A Review

Since Facebook officially changed its name to Meta in Oct. 2021, the metaverse has become a new norm of social networks and three-dimensional (3D) virtual worlds. The metaverse aims to bring 3D immersive and personalized experiences to users by leveraging many pertinent technologies. Despite great attention and benefits, a natural question in the metaverse is how to secure its users’ digital content and data. In this regard, blockchain is a promising solution owing to its distinct features of decentralization, immutability, and transparency. To better understand the role of blockchain in the metaverse, we aim to provide an extensive survey on the applications of blockchain for the metaverse. We first present a preliminary to blockchain and the metaverse and highlight the motivations behind the use of blockchain for the metaverse. Next, we extensively discuss blockchain-based methods for the metaverse from technical perspectives, such as data acquisition, data storage, data sharing, data interoperability, and data privacy preservation. For each perspective, we first discuss the technical challenges of the metaverse and then highlight how blockchain can help. Moreover, we investigate the impact of blockchain on key-enabling technologies in the metaverse, including Internet-of-Things, digital twins, multi-sensory and immersive applications, artificial intelligence, and big data. We also present some major projects to showcase the role of blockchain in metaverse applications and services. Finally, we present some promising directions to drive further research innovations and developments toward the use of blockchain in the metaverse in the future

Gestionando los comentarios a las noticias online: un estudio longitudinal en las webs más accedidas en Portugal, España y Brasil

Online comments have been a widespread feature in news media. Although audiences recognize it widely, doubts remain about the purpose of these interactive spaces. Arguably, understanding how media value online comments defines a way which public debates are socially perceived. Based on The Reuters Institute Digital News Report 2019, this article analysed current media policies towards online commenting in most accessed news websites in Portugal, Spain and Brazil. Following both a quantitative-qualitative methodology, a direct observation and a textual/visual analysis, this article highlights levels of similarity in these policies: comment sections are still predominantly available (31 from 45); comments are typically placed at the bottom of the page; the interactive options identical (share, like, dislike, report). As the overall cases exclude comment moderation, few media (in Portugal, but mostly in Spain) propose alternative models based on the community: voting, comment ranking and autonomous discussion forums.Actualmente, las audiencias suelen conocer el modelo de los comentarios a las noticias online. Aunque muchos duden de su importancia, las audiencias reconocen ampliamente estos forma-tos. Comprender la gestión de los comentarios por los medios significa entender el valor social de los debates. Basado en el informe “The Reuters Institute Digital News Report 2019”, este artículo analiza dicha gestión de comentarios en los medios periodísticos online más populares de Portugal, España y Brasil. Recurriendo a una metodología cuantitativa-cualitativa, observación directa y a un análisis textual/visual, este artículo señala similitudes de gestión: se permiten comentarios en las noticias (31 en 45 casos); los comentarios se colocan al final de las páginas; las opciones interactivas son idén-ticas (compartir, me gusta, no me gusta, denunciar). En términos generales no existe moderación de comentarios, aunque pocos medios (en Portugal, pero principalmente en España) proponen modelos alternativos centrados en la comunidad: votación, clasificación de comentarios y foros de discusión.This article is part of the research line “Media and Journalism” of the Communication & Society Research Centre, at the University of Minho, in Portugal. This research centre is funded by the Portuguese Foundation for the Science and Technology with reference codes UIDB/00736/2020 and UIDP/00736/2020

Cellular

Tracks the evolution of the international cellular industry from the late 1970s to the present. The development of the mobile-phone industry into what we know today required remarkable cooperation between companies, governments, and industrial sectors. Companies developing cellular infrastructure, cellular devices, cellular network services, and eventually software and mobile semiconductors had to cooperate, not simply compete, with each other. In this global history of the mobile-phone industry, Daniel D. Garcia-Swartz and Martin Campbell-Kelly examine its development in the United States, Europe, Japan, and several emerging economies, including China and India. They present the evolution of mobile phones from the perspective of vendors of telephone equipment and network operators, users whose lives have been transformed by mobile phones, and governments that have fostered specific mobile-phone standards. Cellular covers the technical aspects of the cellphone, as well as its social and political impact. Beginning with the 1980s, the authors trace the development of closed (proprietary) and open (available to all) cellular standards, the impact of network effects as cellular adoption increased, major technological changes affecting mobile phone hardware, and the role of national governments in shaping the industry. The authors also consider the changing roles that cellular phones have played in the everyday lives of people around the world and the implications 5G technology may have for the future. Finally, they offer statistics on how quickly the cellular industry grew in different regions of the world and how firms competed in those various markets