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  • 1.
    Bellalta, Boris
    et al.
    Department of Information Technologies and Communications, Universitat Pompeu Fabra, Barcelona, Spain.
    Faridi, Azadeh
    Department of Information Technologies and Communications, Universitat Pompeu Fabra, Barcelona, Spain.
    Staehle, Dirk
    Department of Computer Science, University of Würzburg, Würzburg, Germany.
    Barcelo, Jaume
    Department of Information Technologies and Communications, Universitat Pompeu Fabra, Barcelona, Spain.
    Vinel, Alexey
    Department of Electronics and Communication Engineering, Tampere University of Technology, Tampere, Finland.
    Oliver, Miquel
    Department of Information Technologies and Communications, Universitat Pompeu Fabra, Barcelona, Spain.
    Performance analysis of CSMA/CA protocols with multi-packet transmission2013Ingår i: Computer Networks, ISSN 1389-1286, E-ISSN 1872-7069, Vol. 57, nr 14, s. 2675-2688Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Wireless objects equipped with multiple antennas are able to simultaneously transmit multiple packets by exploiting the channel's spatial dimensions. In this paper, we study the benefits of such Multiple Packet Transmission (MPT) approach, when it is used in combination with a Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) protocol for fully interconnected networks, addressing the interactions between the two mechanisms and showing the performance gains that can be achieved. To this end, a very simple Media Access Control (MAC) protocol that captures the fundamental properties and tradeoffs of a CSMA/CA channel access protocol supporting MPT is introduced. Using this protocol as a reference, a new analytical model is presented for the case of non-saturated traffic sources with finite buffer space. Simulation results show that the analytical model is able to accurately characterize the steady-state behavior of the reference protocol for different number of antennas and different traffic loads, providing a useful tool for understanding the performance gains achieved by MAC protocols supporting MPT. © 2013 Elsevier B.V. All rights reserved.

  • 2.
    Bellalta, Boris
    et al.
    Pompeu Fabra University, Barcelona, Spain.
    Vinel, Alexey
    Chatzimisios, Periklis
    Alexander Technological Educational Institute of Thessaloniki, Thessaloniki, Greece.
    Bruno, Raffaele
    Istituto di Informatica e Telematica (IIT) / Consiglio Nazionale delle Ricerche (CNR), Pisa, Italy.
    Wang, Chonggang
    InterDigital Communications, King of Prussia, PA, USA.
    Research advances and standardization activities in WLANs2014Ingår i: Computer Communications, ISSN 0140-3664, E-ISSN 1873-703X, Vol. 39, s. 1-2Artikel i tidskrift (Refereegranskat)
  • 3. Kochenborger Duarte, Eduardo
    et al.
    Da Costa, Luis Antonio L. F.
    Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
    Erneberg, Mikael
    HE Solutions AB, Solna, Sweden.
    Pignaton de Freitas, Edison
    Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
    Bellalta, Boris
    Universitat Pompeu Fabra Barcelona, Barcelona, Spain.
    Vinel, Alexey
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    SafeSmart: A VANET System for Faster Responses and Increased Safety in Time-Critical Scenarios2021Ingår i: IEEE Access, E-ISSN 2169-3536, Vol. 9, s. 151590-151606Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    An important use case for Vehicular Ad-hoc Networks (VANETs) is its application in the warning systems of emergency vehicles (EV). VANET-based vehicle-to-infrastructure (V2I) communication can be used to exchange important data and information between traffic lights and EVs, by means of transceivers at both ends. This communication helps in reducing the risks of accidents and also saves valuable time through an optimized orchestration of the traffic lights. This paper outlines the system design of an EV warning system that makes use of V2I communication. The system has been extensively studied in state-of-the-art simulators, such as SUMO and OMNeT++, in a huge variety of scenarios, where metrics for both time and safety have been collected. The results show that SafeSmart is highly effective in reducing trip times as well as increasing the overall safety of EVs in emergency scenarios. © 2013 IEEE.

  • 4.
    Kochenborger Duarte, Eduardo
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Erneberg, Mikael
    H&E Solutions Ab, Stockholm, Sweden.
    Freitas, Edison Pignaton De
    Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil.
    Bellalta, Boris
    Universitat Pompeu Fabra, Barcelona, Spain.
    Vinel, Alexey
    Karlsruhe Institute Of Technology, Karlsruhe, Germany.
    SafeSmart: A VANET-LTE-based solution for faster and safer response in critical situations2023Ingår i: IEEE Conference on Standards for Communications and Networking: 2023, Piscataway, NJ: IEEE, 2023, s. 47-53Konferensbidrag (Refereegranskat)
    Abstract [en]

    This paper discusses the use of Vehicular Adhoc Networks (VANETs) for traffic light preemption in emergency scenarios. The proposed system, called SafeSmart, utilizes VANET-based vehicle-to-infrastructure communication to exchange data between traffic lights and emergency vehicles, improving safety and saving time. SafeSmart attempts to predict the arrival time of emergency vehicles at intersections using historical data and requests signal preemption for the selected route. This paper describes and evaluates the proposed approach through simulations using state-of-the-art simulators SUMO and OMNeT++ and real-world traffic data (Luxembourg SUMO Traffic (LuST) Scenario). The results demonstrate improved trip times and increased safety for emergency vehicles and general public on the road. © 2023 IEEE.

  • 5.
    Kochenborger Duarte, Eduardo
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Erneberg, Mikael
    H&E Solutions AB, Stockholm, Sweden.
    Pignaton de Freitas, Edison
    Federal University of Rio Grande do Sul Porto Alegre, Brazil.
    Bellalta, Boris
    Universitat Pompeu Fabra, Barcelona, Spain.
    Vinel, Alexey
    Karlsruhe Institute of Technology, Karlsruhe, Germany.
    SafeSmart 6G: The Future of Emergency Vehicle Traffic Light Preemption2023Ingår i: 2023 2nd International Conference on 6G Networking (6GNet), IEEE, 2023Konferensbidrag (Refereegranskat)
    Abstract [en]

    This paper delves into the utilization of Vehicular Ad-hoc Networks (VANETs) in emergency vehicle warning systems in the era of 6G. The proposed system, named SafeSmart 6G, will leverage VANET-based vehicle-to-infrastructure Communication powered by 6G to exchange data between traffic lights and emergency vehicles, enhancing safety and reducing response times. SafeSmart 6G will predict the arrival time of emergency vehicles at intersections using historical data and AI-driven analytics, requesting signal preemption for the chosen route. The paper discusses the potential benefits and challenges that might arise from the use of 6G in emergency scenarios. © 2023 IEEE.

  • 6.
    Lyamin, Nikita
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Bellalta, Boris
    Universitat Pompeu Fabra, Barcelona, Catalunya, Spain.
    Vinel, Alexey
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Age-of-Information-Aware Decentralized Congestion Control in VANETs2020Ingår i: IEEE Networking Letters, E-ISSN 2576-3156, Vol. 2, nr 1, s. 33-37Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Decentralized Congestion Control (DCC) is one the central components of inter-vehicular communications protocol stack enabling Cooperative Intelligent Transportation System (C-ITS). In this letter we first present an analytical framework that allows to tune parameters of the DCC algorithm specified by ETSI. Then we suggest two approaches to optimize the DCC configuration using our framework. Finally, we evaluate the performance of the proposed approaches using detailed simulation experiments. We demonstrate that proposed approaches are able to control channel busy ratio stably, while proposed analytical model precisely estimates application level metrics. © 2019 IEEE

  • 7.
    Vinel, Alexey
    et al.
    Saint-Petersburg Institute for Informatics and Automation of the Russian Academy of Sciences (SPIIRAS), St. Petersburg, Russia.
    Bellalta, BorisUniversitat Pompeu Fabra, Barcelona, Spain.Sacchi, ClaudioUniversity of Trento, Povo (Trento), Italy.Lyakhov, AndreyInstitute for Information Transmission Problems, Moscow, Russia.Telek, MiklósBudapest University of Technology and Economics, Budapest, Hungary.Oliver, MiquelUniversitat Pompeu Fabra, Barcelona, Spain.
    Multiple Access Communications: Third International Workshop, MACOM 2010, Barcelona, Spain, September 13-14, 2010. Proceedings2010Proceedings (redaktörskap) (Refereegranskat)
    Abstract [en]

    The proceedings contain 27 papers. The topics discussed include: physical model based interference classification and analysis; a test-based scheduling protocol (TBSP) for periodic data gathering in wireless sensor networks; adaptive minimum conditional bit-error-rate linear multiuser detection for STBC-MC-CDMA systems transmitting over mobile radio channels; on the performance of single LDGM codes for iterative data fusion over the multiple access channel; preliminary results on the adoption of de Bruijn binary sequences in DC-DMA systems; analysis of different channel sharing strategies in cognitive radio networks; queueing system with alternating service rates for free space optics-radio hybrid channel; an efficient method for proportional differentiated admission control implementation; cross-layer channel-aware approaches for modern wireless networks; and using agent-oriented simulation system AGNES for evaluation of sensor networks. © Springer-Verlag Berlin Heidelberg 2010

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