@inproceedings{17398, author = {{Turcanu, Ion and Engel, Thomas and Sommer, Christoph}}, booktitle = {{2019 IEEE Vehicular Networking Conference (VNC)}}, isbn = {{9781728145716}}, title = {{{Fog Seeding Strategies for Information-Centric Heterogeneous Vehicular Networks}}}, doi = {{10.1109/vnc48660.2019.9062816}}, year = {{2020}}, } @inproceedings{28096, abstract = {{A key challenge in the domain of Inter-Vehicle Communication (IVC) is to make the best use of limited channel capacity to achieve a continuous exchange of information. In this work, we propose the use of directional radio transmission and reception (known from modern WLAN standards, but following the IEEE 802.11p specifications) to lower the channel utilization. In this work, we use platooning as an example application, since this application offers a well-defined communication topology. Using extensive simulations, we show that directional communication can substantially lower the channel busy ratio to less then half for platoon vehicles and down to less than 1% for non-platoon vehicles. If care is not taken, however, it can drastically increase the probability for packet collisions.}}, author = {{Hardes, Tobias and Klingler, Florian and Sommer, Christoph}}, booktitle = {{12th IEEE Vehicular Networking Conference (VNC 2020)}}, location = {{Virtual}}, publisher = {{IEEE}}, title = {{{Modern WLAN for V2X Applications: Exploiting Beamforming for Platooning}}}, doi = {{10.1109/VNC51378.2020.9318329}}, year = {{2020}}, } @inproceedings{17397, author = {{Amjad, Muhammad Sohaib and Hardes, Tobias and Schettler, Max and Sommer, Christoph and Dressler, Falko}}, booktitle = {{2019 IEEE Vehicular Networking Conference (VNC)}}, isbn = {{9781728145716}}, location = {{Los Angeles, CA}}, title = {{{Using Full Duplex Relaying to Reduce Physical Layer Latency in Platooning}}}, doi = {{10.1109/vnc48660.2019.9062784}}, year = {{2020}}, } @inproceedings{17399, abstract = {{Platooning promises to solve worldwide traffic problems by using wireless communication for tight control of convoys of vehicles to reduce their inter-vehicle gaps. To date, however, most research on platooning has focused on freeway scenarios. In this paper, we provide a realistic exploration of platooning in urban environments: We consider traffic lights and buildings, realistic vehicle dynamics, platooning controllers, and network communication. We highlight the challenges that urban platooning faces because of the particularities of the Radio Frequency (RF) channel, specifically near the centers of intersections. We demonstrate that using Visible Light Communication (VLC) as an alternative can alleviate some problems, but causes others. Using extensive simulations, we show how a situation-aware combination of VLC and RF communication can be used as a solution: It reduces the overall amount of lost information by approx. 85% compared to traditional approaches.}}, author = {{Hardes, Tobias and Sommer, Christoph}}, booktitle = {{2019 IEEE Vehicular Networking Conference (VNC)}}, isbn = {{9781728145716}}, location = {{Los Angeles, CA}}, title = {{{Towards Heterogeneous Communication Strategies for Urban Platooning at Intersections}}}, doi = {{10.1109/vnc48660.2019.9062835}}, year = {{2020}}, } @inproceedings{11985, author = {{Bronner, Fabian and Sommer, Christoph}}, booktitle = {{2018 IEEE Vehicular Networking Conference (VNC)}}, isbn = {{9781538694282}}, title = {{{Efficient Multi-Channel Simulation of Wireless Communications}}}, doi = {{10.1109/vnc.2018.8628350}}, year = {{2019}}, } @inbook{12043, author = {{Reinold, Peter and Meyer, Norbert and Buse, Dominik and Klingler, Florian and Sommer, Christoph and Dressler, Falko and Eisenbarth, Markus and Andert, Jakob}}, booktitle = {{Proceedings}}, isbn = {{9783658252939}}, issn = {{2198-7432}}, title = {{{Verkehrssimulation im Hardware-in-the-Loop-Steuergerätetest}}}, doi = {{10.1007/978-3-658-25294-6_15}}, year = {{2019}}, } @inbook{12072, author = {{Sommer, Christoph and Eckhoff, David and Brummer, Alexander and Buse, Dominik S. and Hagenauer, Florian and Joerer, Stefan and Segata, Michele}}, booktitle = {{Recent Advances in Network Simulation}}, isbn = {{9783030128418}}, issn = {{2522-8595}}, title = {{{Veins: The Open Source Vehicular Network Simulation Framework}}}, doi = {{10.1007/978-3-030-12842-5_6}}, year = {{2019}}, } @article{14817, author = {{Sommer, Christoph and Basagni, Stefano}}, issn = {{1570-8705}}, journal = {{Ad Hoc Networks}}, title = {{{Advances and novel applications of mobile wireless networking}}}, doi = {{10.1016/j.adhoc.2019.101975}}, year = {{2019}}, } @inproceedings{14819, author = {{Heinovski, Julian and Stratmann, Lukas and Buse, Dominik S. and Klingler, Florian and Franke, Mario and Oczko, Marie-Christin H. and Sommer, Christoph and Scharlau, Ingrid and Dressler, Falko}}, booktitle = {{2019 IEEE 20th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM)}}, isbn = {{9781728102702}}, title = {{{Modeling Cycling Behavior to Improve Bicyclists' Safety at Intersections - A Networking Perspective}}}, doi = {{10.1109/wowmom.2019.8793008}}, year = {{2019}}, } @inproceedings{31682, author = {{Stratmann, Lukas and Buse, Dominik S. and Heinovski, Julian and Klingler, Florian and Sommer, Christoph and Tünnermann, Jan and Scharlau, Ingrid and Dressler, Falko}}, booktitle = {{INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft (Workshop-Beiträge)}}, editor = {{Draude, Claude and Lange, Martin and Sick, Bernhard}}, pages = {{ 185 -- 194 }}, publisher = {{Gesellschaft für Informatik e.V.}}, title = {{{Psychological Feasibility of a Virtual Cycling Environment for Human-in-the-Loop Experiments}}}, doi = {{ 10.18420/inf2019_ws21 }}, year = {{2019}}, } @inproceedings{51260, abstract = {{Intelligent Transportation Systems (ITS) are changing the way cars will drive in the future – improving, at the same time, the safety and the efficiency of road traffic. Platooning is one of the considered applications, helping cars to drive with very short safety gaps to improve road traffic capacity and to reduce air drag. A fundamental building block for such cooperative driving solutions is reliable and fast wireless communication. Usually, information from the leader of the platoon needs to be broadcast to all members, resulting in large interference ranges, or being relayed from car to car, introducing additional delays. We introduce a Full Duplex Relaying (FDR) system for use in platooning to overcome these limitations. Concentrating on IEEE 802.11p, we implement the system to explore the feasibility and also to conduct a first performance evaluation. Our results clearly demonstrate the significant performance gain, which at the same time allows to further reduce communication overhead and, thus, to safely increase platoon sizes 802.11p, we implement the system to explore the feasibility and also to conduct a first performance evaluation. Our results clearlydemonstrate the significant performance gain, which at the same time allows to further reduce communication overhead and, thus, to safely increase platoon sizes.}}, author = {{Amjad, Muhammad Sohaib and Hardes, Tobias and Schettler, Max and Sommer, Christoph and Dressler, Falko}}, booktitle = {{11th IEEE Vehicular Networking Conference (VNC 2019)}}, location = {{Los Angeles, CA}}, publisher = {{IEEE}}, title = {{{Using Full Duplex Relaying to Reduce Physical Layer Latency in Platooning}}}, doi = {{10.1109/vnc48660.2019.9062784}}, year = {{2019}}, } @inproceedings{51259, abstract = {{Platooning promises to solve worldwide traffic problems by using wireless communication for tight control of convoys of vehicles to reduce their inter-vehicle gaps. To date, however, most research on platooning has focused on freeway scenarios. In this paper, we provide a realistic exploration of platooning in urban environments: We consider traffic lights and buildings, realistic vehicle dynamics, platooning controllers, and network communication. We highlight the challenges that urban platooning faces because of the particularities of the Radio Frequency (RF) channel, specifically near the centers of intersections. We demonstrate that using Visible Light Communication (VLC) as an alternative can alleviate some problems, but causes others. Using extensive simulations, we show how a situation-aware combination of VLC and RF communication can be used as a solution: It reduces the overall amount of lost information by approx. 85% compared to traditional approaches.}}, author = {{Hardes, Tobias and Sommer, Christoph}}, booktitle = {{11th IEEE Vehicular Networking Conference (VNC 2019)}}, location = {{Los Angeles, CA}}, publisher = {{IEEE}}, title = {{{Towards Heterogeneous Communication Strategies for Urban Platooning at Intersections}}}, doi = {{10.1109/vnc48660.2019.9062835}}, year = {{2019}}, } @inproceedings{28098, abstract = {{Platooning has repeatedly been shown to have the potential to increase both the efficiency and the safety of future road traffic. Yet, while there is ample research that illustrates its potential in freeway scenarios, the biggest challenges of traffic efficiency and safety lie in urban environments, which pose unique challenges: They are characterized by the presence of tight speed limits, intersections, traffic lights, and buildings. Moreover, work that has targeted such scenarios has, so far, not considered platoon formation strategies - or only considered idealized vehicle dynamics, platooning controllers, or wireless network dynamics. We fill this gap by investigating dynamic platoon formation at urban intersections controlled by regular traffic lights. We propose a fuel-efficient strategy for platoon formation at such intersections and investigate its performance using realistic simulation models of (all of) vehicle dynamics, platooning controllers, and wireless networking. Our investigation reveals both challenges in wireless networking as well as the potential of the proposed strategy to simultaneously save both 15 % of fuel and 14 % of travel time.}}, author = {{Hardes, Tobias and Sommer, Christoph}}, booktitle = {{44th IEEE Conference on Local Computer Networks (LCN 2019), Poster Session}}, location = {{Osnabrück}}, publisher = {{IEEE}}, title = {{{Dynamic Platoon Formation at Urban Intersections}}}, year = {{2019}}, } @article{6431, abstract = {{We present a complete simulation and experimentation framework for IEEE 802.11p. The core of the framework is an SDR-based OFDM transceiver that we validated extensively by means of simulations, interoperability tests, and, ultimately, by conducting a field test. Being SDR-based, the transceiver offers important benefits: It provides access to all data down to and including the physical layer, allowing for a better understanding of the system. Based on open and programmable hardware and software, the transceiver is completely transparent and all implementation details can be studied and, if needed, modified. Finally, it enables a seamless switch between simulations and experiments and, thus, helps to bridge the gap between theory and practice. Comparing the transceiver's performance with independent results from simulations and experiments, we underline its potential to be used as a tool for further studies of IEEE 802.11p networks both in field operational tests as well as for simulation-based development of novel physical layer solutions. To make the framework accessible to fellow researchers and to allow reproduction of the results, we released it under an Open Source license. }}, author = {{Bloessl, Bastian and Segata, Michele and Sommer, Christoph and Dressler, Falko}}, journal = {{IEEE Transactions on Mobile Computing}}, number = {{5}}, pages = {{1162--1175}}, publisher = {{IEEE}}, title = {{{Performance Assessment of IEEE 802.11p with an Open Source SDR-based Prototype}}}, doi = {{10.1109/TMC.2017.2751474}}, volume = {{17}}, year = {{2018}}, } @article{6433, abstract = {{A major building block of Vehicular Ad Hoc Net- works (VANETs) is broadcasting: the use of wireless communication for sharing information among vehicles, or between vehicles and infrastructure. Dozens of broadcast protocols have been developed in recent years, including protocols for 1-hop broadcasting of vehicle status information (beaconing) and for geocasting-based applications. However, most of these protocols were designed for one application and cannot co-exist, nor can one broadcast solution meet the demands of all applications. These observations motivated our effort to develop a holistic Network layer for VANETs. We identify the need for making VANET broadcast context-aware, and for supporting four different classes of broadcast protocols, each with its own properties. These classes are not only able to co-exist on the same Network layer, but also to complement one another's functionality. Thus, large applications as well as more holistic Transport protocols can be designed by combining two or more broadcast classes. We discuss the specific characteristics of these classes and design candidate protocols for each class. }}, author = {{Dressler, Falko and Klingler, Florian and Sommer, Christoph and Cohen, Reuven}}, journal = {{IEEE/ACM Transactions on Networking}}, number = {{1}}, pages = {{17--30}}, publisher = {{IEEE}}, title = {{{Not All VANET Broadcasts Are the Same: Context-Aware Class Based Broadcast}}}, doi = {{10.1109/TNET.2017.2763185}}, volume = {{26}}, year = {{2018}}, } @inproceedings{11983, author = {{Bloessl, Bastian and Klingler, Florian and Missbrenner, Fabian and Sommer, Christoph}}, booktitle = {{2017 IEEE Vehicular Networking Conference (VNC)}}, isbn = {{9781538609866}}, title = {{{A systematic study on the impact of noise and OFDM interference on IEEE 802.11p}}}, doi = {{10.1109/vnc.2017.8275633}}, year = {{2018}}, } @inproceedings{11986, author = {{Buse, Dominik S. and Schettler, Max and Kothe, Nils and Reinold, Peter and Sommer, Christoph and Dressler, Falko}}, booktitle = {{2018 14th Annual Conference on Wireless On-demand Network Systems and Services (WONS)}}, isbn = {{9783903176010}}, title = {{{Bridging worlds: Integrating hardware-in-the-loop testing with large-scale VANET simulation}}}, doi = {{10.23919/wons.2018.8311659}}, year = {{2018}}, } @inproceedings{11987, author = {{Buse, Dominik S. and Sommer, Christoph and Dressler, Falko}}, booktitle = {{IEEE INFOCOM 2018 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)}}, isbn = {{9781538659793}}, title = {{{Demo abstract: Integrating a driving simulator with city-scale VANET simulation for the development of next generation ADAS systems}}}, doi = {{10.1109/infcomw.2018.8406997}}, year = {{2018}}, } @article{11990, author = {{Djahel, Soufiene and Sommer, Christoph and Marconi, Annapaola}}, issn = {{1524-9050}}, journal = {{IEEE Transactions on Intelligent Transportation Systems}}, pages = {{2152--2155}}, title = {{{Guest Editorial: Introduction to the Special Issue on Advances in Smart and Green Transportation for Smart Cities}}}, doi = {{10.1109/tits.2018.2848018}}, year = {{2018}}, } @article{12007, author = {{Eckhoff, David and Sommer, Christoph}}, issn = {{0140-3664}}, journal = {{Computer Communications}}, pages = {{118--128}}, title = {{{Readjusting the privacy goals in Vehicular Ad-Hoc Networks: A safety-preserving solution using non-overlapping time-slotted pseudonym pools}}}, doi = {{10.1016/j.comcom.2018.03.006}}, year = {{2018}}, }