{"title":"An adaptive and VANETs-based Next Road Re-routing system for unexpected urban traffic congestion avoidance","authors":"Shen Wang, S. Djahel, Jennifer McManis","doi":"10.1109/VNC.2015.7385577","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385577","url":null,"abstract":"Unexpected road traffic congestion caused by en-route events, such as car crashes, road works, unplanned parades etc., is a real challenge in today's urban road networks as it considerably increases the drivers' travel time and decreases travel time reliability. To face this challenge, this paper extends our previous work named Next Road Rerouting (NRR) by designing a novel vehicle rerouting strategy that can adapt itself to the sudden change of urban road traffic conditions. This is achieved through a smart calibration of the algorithmic and operational parameters of NRR without any intervention from traffic managers. Specifically, a coefficient of variation based method is used to assign weight values to three factors in the routing cost function of NRR, and the k-means algorithm is applied periodically to choose the number of NRR enabled agents needed. This adaptive-NRR (a-NRR) strategy is supported by vehicular ad-hoc networks (VANETs) technology as this latter can provide rich traffic information at much higher update frequency and much larger coverage than induction loops used in the previously proposed static NRR. Simulation results show that in the city center area of TAPASCologne scenario, compared to the existing vehicle navigation system (VNS) and static NRR, our adaptive-NRR can achieve considerable gain in terms of trip time reduction and travel time reliability improvement.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132172868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the level of detail of synthetic highway traffic necessary to vehicular networking studies","authors":"M. Gramaglia, M. Fiore","doi":"10.1109/VNC.2015.7385541","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385541","url":null,"abstract":"The proper modeling of road traffic is paramount to the dependability of studies on vehicular networking solutions intended for highway environments. Yet, it is not clear which is the actual level of detail in the mobility representation that is sufficient and necessary to such studies. This uncertainty results into a variety of approaches being adopted in the literature, and ultimately undermines the reliability and reproducibility of research outcomes. We explore the space of possible mobility models and performance metrics, and pinpoint the level of detail needed for different types of vehicular networking studies.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116690993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Temporal connectivity of vehicular networks: The power of store-carry-and-forward","authors":"Christian Glacet, M. Fiore, M. Gramaglia","doi":"10.1109/VNC.2015.7385546","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385546","url":null,"abstract":"Store-carry-and-forward is extensively used in vehicular environments for many and varied purposes, including routing, disseminating, downloading, uploading, or offloading delay-tolerant content. The performance gain of store-carry-and-forward over traditional connected forwarding is primarily determined by the fact that it grants a much improved network connectivity. Indeed, by letting vehicles physically carry data, store-carry-and-forward adds a temporal dimension to the (typically fragmented) instantaneous network topology that is employed by connected forwarding. Temporal connectivity has thus a important role in the operation of a wide range of vehicular network protocols. Still, our understanding of the dynamics of the temporal connectivity of vehicular networks is extremely limited. In this paper, we shed light on this underrated aspect of vehicular networking, by exploring a vast space of scenarios through an evolving graph-theoretical approach. Our results show that using store-carry-and-forward greatly increases connectivity, especially in very sparse networks. Moreover, using store-carry-and-forward mechanisms to share content within a geographically-bounded area can be very efficient, i.e., new entering vehicles can be reached rapidly.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114760703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Diego Pacheco-Paramo, L. Iannone, D. Kofman, A. C. Viana, G. Mermoud, J. Vasseur
{"title":"Adaptation of topology-based routing protocols for data gathering applications in VANETs","authors":"Diego Pacheco-Paramo, L. Iannone, D. Kofman, A. C. Viana, G. Mermoud, J. Vasseur","doi":"10.1109/VNC.2015.7385578","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385578","url":null,"abstract":"The use of VANETs for data gathering applications imply that vehicles are not only able to generate data but also to forward it from others towards an access point (AP). Given the mobility characteristics of vehicles and the difficult propagation conditions of urban scenarios, it is commonly stated that topology-based routing solutions are less efficient than geographic-based routing solutions. However, these statements refer to generic vehicular communications, ignoring specific characteristics of data gathering scenarios. In this work, two existing routing protocols that prior to forwarding data, set a path from each vehicle towards the AP are adapted for data gathering applications. While the existence of a path reduces the number of ineffective retransmissions and the delay, it also increases the overhead, and therefore the presented protocols were adapted to improve the overall performance. Aiming to correctly evaluate the routing protocols, simulations are launched using a realistic trace from the city of Cologne. The results obtained show that it is possible to limit the overhead associated to topology updates, outperforming geographic-based solutions.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123018349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Providing fairness between multiple flows in vehicular networks","authors":"Wantanee Viriyasitavat, F. Bai, O. Tonguz","doi":"10.1109/VNC.2015.7385545","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385545","url":null,"abstract":"In emerging non-safety unicast applications of vehicular ad hoc networks (VANETs) such as Internet Access, Content, Map, or Database Download (CMDD), end-to-end and connection-oriented transmission control must be employed to guarantee a desired level of performance. It is envisioned that in the future, these non-safety applications will involve several concurrent flows. Providing a fair distribution of goodput and bandwidth among these concurrent flows will therefore be crucial. To tackle this significant issue, in this paper we propose a Cooperative Routing Protocol (CROP) which, in conjunction with the local packet scheduling and queue management, can reduce the inherent unfairness of the transport layer as well as MAC protocol used in the DSRC standard. Our results show that the proposed cooperative routing concept provides significant improvement in terms of per-flow goodput, end-to-end delays, jitter, and fairness at the expense of a very small decrease in the overall system goodput.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125309567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Poster: Anti-jamming automatic gain control and packet detection for vehicular receiver","authors":"Shao-Ying Yeh, Jian-Ya Chu, Terng-Yin Hsu","doi":"10.1109/VNC.2015.7385564","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385564","url":null,"abstract":"In vehicular application, the wireless receiver not only considers the channel effect, like Doppler effect, Shadowing effect, Multipath fading, ... etc., but also the impulse jamming and continuous wave (CW) jamming from the device in the vehicle. This paper presents anti-jamming automatic gain control (AGC) and packet detection for vehicular receiver. In impulse jamming and CW jamming existence, the AGC responses a suitable gain in 3.2us when packet is arriving, and the packet detection hit rate exceeds 99% hit rate under multipath fading and shadowing effect.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114215298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Differential pressure for V2V vertical clearance","authors":"M. Hu, R. Melen, G. Bansal","doi":"10.1109/VNC.2015.7385557","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385557","url":null,"abstract":"Current V2V positioning systems are prone to accuracy degradations due to GNSS blackouts and multipath. In particular, loss in vertical accuracy near overpasses occasionally leads to false alarms in collision detection algorithms. This paper presents V2V differential pressure as a solution to this problem. General implementation details are discussed and techniques to mitigate noise and correct for errors are presented. Finally the overall system is evaluated through a series of experiments to demonstrate its effectiveness at determining vertical separation. This idea may be used to increase the robustness of current V2V positioning systems and enhance vertical accuracy.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125718048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Learning the vehicular channel through the self-organization of frequencies","authors":"Răzvan-Andrei Stoica, S. Severi, G. Abreu","doi":"10.1109/VNC.2015.7385549","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385549","url":null,"abstract":"Connected Vehicles is a currently hot topic, which can be said to have emerged under the inspiration of the Internet of Things. Motivated by a myriad of traffic safety, decongestion, and respectively, driver comfort applications, the subject is gaining more and more popularity among both researchers and industry. Our interests in the topic are focused on both the communication links and the precise localization of the vehicles. These topics are catalyzed by applications such as high precision collaborative vehicular positioning and autonomous driving. The robustness of the radio links in this context is hence at the backbone of vehicular ad-hoc networks, and respectively, of initial cooperative positioning estimates. The subsequent communication protocol is based on the IEEE 802.11p standard of the WAVE (Wireless Access in Vehicular Environments) technology. As part of the post-transmission channel modeling, we introduce in this paper a new channel estimator structure based on a low complexity adaption of Kohonen's Self-Organizing Map complemented by a filtered decision feedback layer. Furthermore, we study the key factors that would lead to a further performance optimization of our estimator while also comparing it to the state of the art solutions existing already in the literature.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133276031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Poster: Design of a Mutual Exchange Communication System for an in-vehicle network","authors":"SeungJe Park, J. H. Yang","doi":"10.1109/VNC.2015.7385569","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385569","url":null,"abstract":"Since safety and convenience have attained a higher priority in automotive technologies, a new, alternative invehicle network interface that can replace the existing network, needs to be developed. Thus, this paper introduces the “Mutual Exchange Communication System” to serve as the mutual interchangeable gateway to Ethernet data with data from the existing network. It is expected to provide a new, in-vehicle network interface that can efficiently implement an integrated vehicle system.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114817978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Crosslayer beaconing design toward guaranteed cooperative awareness with contending traffic","authors":"Hoa-Hung Nguyen, Han-You Jeong","doi":"10.1109/VNC.2015.7385559","DOIUrl":"https://doi.org/10.1109/VNC.2015.7385559","url":null,"abstract":"A key feature of inter-vehicle communications is their ability of supporting cooperative safety-critical applications (CSCA) which prevent a vehicle from colliding with the others. In this paper, we present a crosslayer beaconing design for CSCA that keeps the tracking uncertainty below a fixed threshold, provided that a receiving vehicle has at least one of the K latest beacons of the sending vehicle. To aim this, we present the mobility-adaptive beaconing (MAB), in which the sending vehicle determines whether or not to broadcast its new beacon at each frame based on the maximum tracking uncertainty in the subsequent K frames. Numerical results from the simulation show that the MAB scheme outperforms the existing beaconing approaches in the sense that it can always limit the tracking uncertainty to a fixed threshold.","PeriodicalId":399816,"journal":{"name":"2015 IEEE Vehicular Networking Conference (VNC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130525707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}