On developing smart applications for VANETs: Where are we now? some insights on technical issues and open problems
04 Dec 2009-pp 1-6
TL;DR: Partially reviewing the research in this space and finding out how well can applications such as peer-to-peer file sharing and gaming can be supported, and an understanding of how far ahead in time is the implementation of the cited scenarios on a distributed vehicular ad hoc network.
Abstract: The advances in research on ad hoc networks, the availability of cheap radio interfaces (e.g. WiFi) and the increasing amount of electronic devices installed in vehicles have set the path for vehicular ad hoc networks. In the past few years, vehicular ad hoc network (VANET) research has addressed all layers, trying to optimize from the physical layer to the application layer to support the design of new possible application scenarios. It is often difficult to find a comprehensive approach to VANETs, due to their complexity. It is also often difficult to realize how far, technically, is the implementation of VANET-based application scenarios. We here propose to take one step in such direction, partially reviewing the research in this space and finding out how well can applications such as peer-to-peer file sharing and gaming can be supported. Our final scope is to provide an understanding of how far ahead in time, from the technological point of view, is the implementation of the cited scenarios on a distributed vehicular ad hoc network.
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73 citations
09 Jan 2014
TL;DR: This work has addressed the utility of metaheuristic algorithms (PSO, GA) for inter VANET sensor data handovers in order to study the performance analysis to maximize the throughput & reliability improvement in real VANet.
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8 citations
Cites methods from "On developing smart applications fo..."
...So as per previous observations the successful design and implementation of an application depends on a correct interpretation of the key elements like Broadcast Optimization, Fairness and Admission Control [4] underlying to which the behavior of the network can be specified which runs on it....
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Cites background from "On developing smart applications fo..."
...Nowadays, any object casts an information shadow which, if captured and processed intelligently, could be used to generate new pervasive services [4, 5, 6, 7, 8]....
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References
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11 Jun 2007
TL;DR: This paper introduces realistic vehicular mobility traces of downtown Portland, Oregon, obtained fromextremely detailed large scale traffic simulations performed at the Los Alamos National Laboratories (LANL), among the most accurate synthetic motion traces available for study.
Abstract: In an urban environment, vehicles can opportunistically exploit infrastructure through open Access Points (APs) to efficiently communicate with other vehicles. This is to avoid long wireless ad hoc paths, and to alleviate congestion in the wireless grid. Analytic and simulation models are used to optimize the communications and networking strategies. For realistic results, one important challenge is the accurate representation of traffic mobility patterns.In this paper we introduce realistic vehicular mobility traces of downtown Portland, Oregon, obtained fromextremely detailed large scale traffic simulations performed at the Los Alamos National Laboratories (LANL). To the best of our knowledge, these are among the most accurate synthetic motion traces available for study, with the exception of actual car trace measurements. The new mobility model is used to evaluate AODV [1] in flat and opportunistic infrastructure routing. To assess the importance of a realistic mobility model for this evaluation, we compare these results with those obtained with CORSIM [2] traces.The paper makes the following contributions: (a) introduction of efficient, opportunistic strategies for extending the AP infrastructure to use vehicle to vehicle paths, and (b) assessment of different mobility models - CORSIM traces and LANL's realistic vehicular traces - in the modeling of different routing strategies.
86 citations
"On developing smart applications fo..." refers background or result in this paper
...The results published in [28], [29] highlight the importance of...
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...Moreover, an additional degree of reality is introduced in the simulated urban setting in [28]....
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...In [28], [29] authors analyze the feasibility of implementing a VANET in downtown Portland, Oregon....
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...For the details of the simulation settings please refer to [28], [29]....
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...It is also interesting to observe that from the results of [28], the AP placement is far from optimal....
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31 Oct 2006
74 citations
01 Jan 2005
TL;DR: The mobility model for the urban, vehicular scenario can be used in conjunction with the analytical model for estimating query hit ratio by a system designer to determine the scope of the query flooding as a function of the available storage per vehicle for their application.
Abstract: AdTorrent is an integrated system for search, ranking and content delivery in car networks. AdTorrent builds on the notion of Digital Billboards, a scalable “push” model architecture for ad content delivery. We present a detailed analysis of the performance impact of key design parameters such as scope of the query flooding on the query hit ratio. Our mobility model for the urban, vehicular scenario can be used in conjunction with the analytical model for estimating query hit ratio by a system designer to determine the scope of the query flooding as a function of the available storage per vehicle for their application.
66 citations
02 Aug 2006
TL;DR: This paper addresses the interaction between vehicles and Internet servers through Virtual Grid and Internet Infrastructure, which includes transparent geo-route provisioning across the Internet, mobile resource monitoring, and mobility management and focuses on routing.
Abstract: Vehicle communications are becoming a reality, driven by navigation safety requirements and by the investments of car manufacturers and Public Transport Authorities. As a consequence many of the essential vehicle grid components (radios, Access Points, spectrum, standards, etc.) will soon be in place (and paid for) paving the way to unlimited opportunities for other car-to-car applications beyond safe navigation, for example, from news to entertainment, mobile network games and civic defense. In this study, we take a visionary look at these future applications, the emerging "Vehicular Grid" that will support them and the interplay between the grid and the communications infrastructure.In essence, the Vehicular Grid is a large scale ad hoc network. However, an important feature of the Vehicular Grid, which sets it apart from most instantly-deployed ad hoc networks, is the ubiquitous presence of the infrastructure (and the opportunity to use it). While the Vehicular Grid must be entirely self-supporting for emergency operations (natural disaster, terrorist attack, etc), it should exploit the infrastructure (when present) during normal operations. In this paper we address the interaction between vehicles and Internet servers through Virtual Grid and Internet Infrastructure. This includes transparent geo-route provisioning across the Internet, mobile resource monitoring, and mobility management (using back up services in case of infrastructure failure). We then focus on routing and show the importance of Infrastructure cooperation and feedback for efficient, congestion free routing.
55 citations
"On developing smart applications fo..." refers background in this paper
...Authors in [7] point out the importance of relying on the existing wireless access point (AP) infrastructure in urban areas, showing that this can greatly improve the scalability of vehicular networks and alleviate the disruption due to high dense networks....
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11 May 2007
TL;DR: Assessment of the impact of a range of mobility models on network performance and the performance trend the authors may expect during the day, as urban mobility patterns change are discussed.
Abstract: In [1] we show how vehicles can opportunistically exploit infrastructure through open access points (APs) to efficiently communicate with other vehicles. We also highlight the importance of the use of a correct mobility model, since the advantages that may derive from the use of an infrastructure may not be appreciated because of a lack of accuracy. We continue our study based on realistic vehicular mobility traces of downtown Portland, Oregon, obtained from extremely detailed large scale traffic simulations performed at the Los Alamos National Laboratories (LANL). This mobility model is used to evaluate both flat and opportunistic infrastructure routing. We here build upon [1] and extend that work to: (a) assess the impact of a range of mobility models on network performance and; (b) discuss the performance trend we may expect during the day, as urban mobility patterns change. We here compare results obtained with CORSIM [2] traces and Random Waypoint (RWP) [3] to the results obtained with realistic mobility traces.
29 citations