An Overview of Vehicular Communications

The transport sector is commonly subordinate to several issues, such as traffic congestion and accidents. Despite this, in recent years, it is also evolving with regard to cooperation between vehicles. The fundamental objective of this trend is to increase road safety, attempting to anticipate the circumstances of potential danger. Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I) and Vehicle-to-Everything (V2X) technologies strive to give communication models that can be employed by vehicles in different application contexts. The resulting infrastructure is an ad-hoc mesh network whose nodes are not only vehicles but also all mobile devices equipped with wireless modules. The interaction between the multiple connected entities consists of information exchange through the adoption of suitable communication protocols. The main aim of the review carried out in this paper is to examine and assess the most relevant systems, applications, and communication protocols that will distinguish the future road infrastructures used by vehicles. The results of the investigation reveal the real benefits that technological cooperation can involve in road safety. Document type: Articl

Wireless vehicular communications for automatic incident detection and recovery

Incident detection is the process by which an incident is brought to the attention of traffic operators in order to design and activate a response plan. To minimize the detection time is crucial to mitigate the incident severity for victims as well to reduce the risk of secondary crashes. Automated incident information dissemination and traffic conditions is useful to alert in-route drivers to decide alternative routes on unexpected traffic congestion and may be also used for the incident recovery process, namely to optimize the response plan including the “nearest” rescue teams, thereby shortening their response times. Wireless vehicular communications, notably the emergent IEEE 802.11p protocol, is the enabling technology providing timely, dependable and secure properties that are essential for the devised target application. However, there are still some open issues with vehicular communications that require further research efforts. This paper presents an overview of the state of the art in wireless vehicular communications and describes the field operational tests proposed within the scope of the upcoming FP7 project ICSI - Intelligent Cooperative Sensing for Improved traffic efficiency

A Recent Connected Vehicle - IoT Automotive Application Based on Communication Technology

Realizing the full potential of vehicle communications depends in large part on the infrastructure of vehicular networks. As more cars are connected to the Internet and one another, new technological advancements are being driven by a multidisciplinary approach. As transportation networks become more complicated, academic, and automotive researchers collaborate to offer their thoughts and answers. They also imagine various applications to enhance mobility and the driving experience. Due to the requirement for low latency, faster throughput, and increased reliability, wireless access technologies and an appropriate (potentially dedicated) infrastructure present substantial hurdles to communication systems. This article provides a comprehensive overview of the wireless access technologies, deployment, and connected car infrastructures that enable vehicular connectivity. The challenges, issues, services, and maintenance of connected vehicles that rely on infrastructure-based vehicular communications are also identified in this paper

Turbo-like Iterative Multi-user Receiver Design for 5G Non-orthogonal Multiple Access

Non-orthogonal multiple access (NoMA) as an efficient way of radio resource sharing has been identified as a promising technology in 5G to help improving system capacity, user connectivity, and service latency in 5G communications. This paper provides a brief overview of the progress of NoMA transceiver study in 3GPP, with special focus on the design of turbo-like iterative multi-user (MU) receivers. There are various types of MU receivers depending on the combinations of MU detectors and interference cancellation (IC) schemes. Link-level simulations show that expectation propagation algorithm (EPA) with hybrid parallel interference cancellation (PIC) is a promising MU receiver, which can achieve fast convergence and similar performance as message passing algorithm (MPA) with much lower complexity.Comment: Accepted by IEEE 88th Vehicular Technology Conference (IEEE VTC-2018 Fall), 5 pages, 6 figure

A Survey on Cooperation for VDTN

Vehicular Delay-Tolerant Networks (VDTNs) are composed of mobile nodes (vehicles) that communicate with each other wirelessly and using store carry and forward paradigm to forward data despite intermittent connectivity. There are major challenges in establishing effective communications between nodes in Vehicular Ad Hoc Networks (VANETs). In them the systems are subject to wireless interference and disconnections, thus hindering the availability and reliability of source-destination connections. Another major problem arises when VANETs are sparse, causing excessive retransmissions and delays due to long periods without maintaing connection between pair of vehicles. This article reviews the literature related to Vehicular Delay Tolerant Network with focus on Cooperation. It starts by examining definitions of some of the fields of research in VDTN. An overview of VDTN with cooperative networks is presente

A survey on vehicular communication for cooperative truck platooning application

Platooning is an application where a group of vehicles move one after each other in close proximity, acting jointly as a single physical system. The scope of platooning is to improve safety, reduce fuel consumption, and increase road use efficiency. Even if conceived several decades ago as a concept, based on the new progress in automation and vehicular networking platooning has attracted particular attention in the latest years and is expected to become of common implementation in the next future, at least for trucks.The platoon system is the result of a combination of multiple disciplines, from transportation, to automation, to electronics, to telecommunications. In this survey, we consider the platooning, and more specifically the platooning of trucks, from the point of view of wireless communications. Wireless communications are indeed a key element, since they allow the information to propagate within the convoy with an almost negligible delay and really making all vehicles acting as one. Scope of this paper is to present a comprehensive survey on connected vehicles for the platooning application, starting with an overview of the projects that are driving the development of this technology, followed by a brief overview of the current and upcoming vehicular networking architecture and standards, by a review of the main open issues related to wireless communications applied to platooning, and a discussion of security threats and privacy concerns. The survey will conclude with a discussion of the main areas that we consider still open and that can drive future research directions.(c) 2022 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)

Congestion Control for Vehicular Environments by Adjusting IEEE 802.11 Contention Window Size

The final publication is available at Springer via http://dx.doi.org/10.1007/978-3-319-03889-6_30Medium access control protocols should manage the highly dynamic nature of Vehicular Ad Hoc Networks (VANETs) and the variety of application requirements. Therefore, achieving a well-designed MAC protocol in VANETs is a challenging issue. The contention window is a critical element for handling medium access collisions in IEEE 802.11, and it highly affects the communications performance. This paper proposes a new contention window control scheme, called DBM-ACW, for VANET environments. Analysis and simulation results using OMNeT++ in urban scenarios show that DBM-ACW provides better overall performance compared with previous proposals, even with high network densities.This work was partially supported by the Ministerio de Ciencia e Innovación, Spain, under Grant TIN2011-27543-C03-01Balador, A.; Tavares De Araujo Cesariny Calafate, CM.; Cano Escribá, JC.; Manzoni, P. (2013). Congestion Control for Vehicular Environments by Adjusting IEEE 802.11 Contention Window Size. En Algorithms and Architectures for Parallel Processing. Springer. 259-266. https://doi.org/10.1007/978-3-319-03889-6_30S259266Booysen, M.J., Zeadally, S., van Rooyen, G.-J.: Survey of media access control protocols for vehicular ad hoc networks. IET Communications 5(11), 1619–1631 (2011)Kenney, J.: Standards and regulations. In: Hartenstein, H., Laberteaux, K.P. (eds.) VANET: Vehicular Applications and Inter-networking Technologies, ch. 10, pp. 365–428. Wiley (2010)Stanica, R., Chaput, E., Beylot, A.-L.: Enhancements of IEEE 802.11p Protocol for Access Control on a VANET Control Channel. In: 2011 IEEE International Conference on Communications (ICC), June 5-9, pp. 1–5 (2011)Calafate, C.T., Fortino, G., Fritsch, S., Monteiro, J., Cano, J., Manzoni, P.: An efficient and robust content delivery solution for IEEE 802.11p vehicular environments. Journal of Network and Computer Applications 35(2), 753–762 (2012)Cali, F., Conti, M., Gregori, E.: Dynamic tuning of the IEEE 802.11 protocol to achieve a theoretical throughput limit. IEEE/ACM Transactions on Networking 8(6), 785–799 (2000)Wu, H., Cheng, S., Peng, Y., Long, K., Ma, J.: IEEE 802.11 distributed coordination function (DCF): analysis and enhancement. In: IEEE International Conference on Communications, ICC 2002, vol. 1, pp. 605–609 (2002)Balador, A., Movaghar, A., Jabbehdari, S.: History based contention window control in ieee 802.11 mac protocol in error prone channel. Journal of Computer Science 6(2), 205–209 (2010)Chrysostomou, C., Djouvas, C., Lambrinos, L.: Applying adaptive QoS-aware medium access control in priority-based vehicular ad hoc networks. In: 2011 IEEE Symposium on Computers and Communications (ISCC), June 28-July 1, pp. 741–747 (2011)Jang, H.-C., Feng, W.-C.: Network Status Detection-Based Dynamic Adaptation of Contention Window in IEEE 802.11p. In: 2010 IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), May 16-19, pp. 1–5 (2010)http://www.omnetpp.org/http://inet.omnetpp.org/Behrisch, M., Bieker, L., Erdmann, J., Krajzewicz, D.: SUMO - Simulation of Urban MObility: An Overview. In: The Third International Conference on Advances in System Simulation, SIMUL 2011 (2011)Baguena, M., Tornell, S., Torres, A., Calafate, C.T., Cano, J.C., Manzoni, P.: VACaMobil: VANET Car Mobility Manager for OMNeT++. In: IEEE International Conference on Communications 2013 - 3rd IEEE International Workshop on Smart Communication Protocols and Algorithms (SCPA 2013), Budapest, Hungary (June 2013)Baguena, M., Calafate, C.T., Cano, J., Manzoni, P.: Towards realistic vehicular network simulation models. In: 2012 IFIP Wireless Days (WD), November 21-23, pp. 1–3 (2012)http://www.openstreetmap.org