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43
Transportation Research Part F
- in Soar. Leidschendam, The Netherlands: KPN Research
, 1995
"... journal homepage: www.elsevier.com/locate/trc Adaptive data dissemination for time-constrained messages ..."
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journal homepage: www.elsevier.com/locate/trc Adaptive data dissemination for time-constrained messages
A Reliable Robust Fully Ad Hoc Data Dissemination Mechanism for Vehicular Networks
"... Many applications in vehicular networks need the data to be disseminated from a source vehicle to a large number of vehicles in the network. Although many solutions to this problem have been previously proposed by the research community, some challenges and failure scenarios still remain unsolved pa ..."
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Many applications in vehicular networks need the data to be disseminated from a source vehicle to a large number of vehicles in the network. Although many solutions to this problem have been previously proposed by the research community, some challenges and failure scenarios still remain unsolved particularly when the forwarding vehicle is located at an intersection and it wants to disseminate the data to all the intersecting road segments. In this paper, we first evaluate some of the previously proposed directional mode (along the straight roads) data dissemination mechanisms and then integrate the one with the best performance with our novel reliable robust intersection mode data dissemination mechanism in order to come up with a united mechanism for disseminating data both along the straight roads and at intersections. The effectiveness of our proposed mechanism is verified by performance evaluations. 1.
Mobile Distribution-Aware Data Dissemination for Vehicular Ad Hoc Networks
"... Abstract: This paper proposes MDA, a mobile distribution-aware data dissemination, based on Publish/Subscribe, for Vehicular Ad Hoc Networks (VANETs). To take advantage of VANETs ’ self-organization and self-stabilization, this paper first establishes an appropriate Publish/Subscribe model in VANET ..."
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Abstract: This paper proposes MDA, a mobile distribution-aware data dissemination, based on Publish/Subscribe, for Vehicular Ad Hoc Networks (VANETs). To take advantage of VANETs ’ self-organization and self-stabilization, this paper first establishes an appropriate Publish/Subscribe model in VANETs. Next, the subscribers ’ distribution is predicted by calculating the delivery probabilities between vehicles and subscribers. Third, based on the predicted distribution, adjust notification token’s deployment and forwarding in the VANETs are used to achieve effective distribution of notification brokers (notification-token holder). Compared with existing solutions, a novel heuristic algorithm is applied to alter the notification broker distribution and to adapt to a real-time VANETs situation. Furthermore, MDA can also reduce an overall network load of VANET by controlling the occurrences in broadcasting. Simulation results based on a real city map and realistic traffic situations show that the MDA performs much better in terms of delivery and delay ratios and have a higher network load than other solutions. Key words: VANET (vehicular ad hoc network); data dissemination; publish/subscribe; notification-token; notification-broker 摘 要: 提出了一种面向发布/订阅系统基于车辆移动分布感知的事件分发策 略 MDA(mobile distribution-aware
Persistent Localized Broadcasting in VANETs
- in "IEEE Journal on Selected Areas in Communications", 2012
"... Abstract—We present a communication protocol, called LINGER, for persistent dissemination of delay-tolerant informa-tion to vehicular users, within a geographical area of interest. The goal of LINGER is to dispatch and confine information in local-ized areas of a mobile network with minimal protocol ..."
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Abstract—We present a communication protocol, called LINGER, for persistent dissemination of delay-tolerant informa-tion to vehicular users, within a geographical area of interest. The goal of LINGER is to dispatch and confine information in local-ized areas of a mobile network with minimal protocol overhead and without requiring knowledge of the vehicles ’ routes or desti-nations. LINGER does not require roadside infrastructure sup-port: it selects mobile nodes in a distributed, cooperative way and lets them act as “information bearers”, providing uninterrupted information availability within a desired region. We analyze the performance of our dissemination mechanism through extensive simulations, in complex vehicular scenarios with realistic node mobility. The results demonstrate that LINGER represents a viable, appealing alternative to infrastructure-based solutions, as it can successfully drive the information toward a region of interest from a far away source and keep it local with negligible overhead. We show the effectiveness of such an approach in the support of localized broadcasting, in terms of both percentage of informed vehicles and information delivery delay, and we compare its performance to that of a dedicated, state-of-the-art protocol. Index Terms—Vehicular networks, information dissemination, localized services. I.
A Region-based Reporting Scheme for Mobile Sensor Networks
"... Abstract—The mobile sensor networks (MSNs) have been widely deployed to provide an ubiquitous solution for time-sensitive applications in a specific area with low deployment cost. The monitoring area of an MSN can be divided into several sensing regions (SRs). In an SR, the mobile sensor (MS) is res ..."
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Abstract—The mobile sensor networks (MSNs) have been widely deployed to provide an ubiquitous solution for time-sensitive applications in a specific area with low deployment cost. The monitoring area of an MSN can be divided into several sensing regions (SRs). In an SR, the mobile sensor (MS) is responsible for reporting the sensed data to the sink node. For the time-sensitive applications on MSN, the time is divided into multiple monitoring periods (MPs). During every MP, a sensing report transmission in an SR is invalid if the sensing report is generated before the beginning of the MP. In this paper, we propose a region-based reporting mechanism, namely Energy-Efficient Distributed-Control Reporting (E2DCR) mechanism, for the MSNs. During every MP, the E2DCR mechanism attempts to have only one MS transmit the sensing report in an SR, and the other MSs in the same SR can stay in the sleep mode for power saving. Simulation experiments are conducted to investigate the performance of the proposed mechanism. Our study shows that E2DCR can meet the delay constraint of the time-sensitive applications with less power consumption.
DDRC: Data Dissemination in Vehicular Networks Using Rateless Codes*
"... In this paper, we address the problem of delivering multimedia content to a sparse vehicular network from roadside info-stations, using efficient vehicle-to-vehicle col-laboration. Due to the highly dynamic nature of the underlying vehicular network topol-ogy, we depart from architectures requiring ..."
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In this paper, we address the problem of delivering multimedia content to a sparse vehicular network from roadside info-stations, using efficient vehicle-to-vehicle col-laboration. Due to the highly dynamic nature of the underlying vehicular network topol-ogy, we depart from architectures requiring centralized coordination, reliable MAC scheduling, or global network state knowledge, and instead adopt a distributed paradigm with simple protocols. In other words, we investigate the problem of reliable dissemina-tion from multiple sources when each node in the network shares a limited amount of its resources for cooperating with others. By using rateless coding at the Road Side Unit (RSU) and using vehicles as data carriers, we describe an efficient way to achieve reli-able dissemination to all nodes (even disconnected clusters in the network). In the nut-shell, we explore vehicles as mobile storage devices. We then develop a method to keep the density of the rateless coded packets as a function of distance from the RSU at the desired level set for the target decoding distance. We investigate various tradeoffs in-volving buffer size, maximum capacity, and the mobility parameter of the vehicles.
Digital Repository @ Iowa State University
, 2011
"... study on vehicular network application and simulation ..."
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Effective Life and Area Based Data Storing and Deployment in Vehicular Ad-Hoc Networks
, 2015
"... In vehicular ad-hoc networks (VANETs), store-carry-forward approach may be used for data sharing, where moving vehicles carry and exchange data when they go by each other. In this ap-proach, storage resource in a vehicle is generally limited. Therefore, attributes of data that have to be stored in v ..."
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In vehicular ad-hoc networks (VANETs), store-carry-forward approach may be used for data sharing, where moving vehicles carry and exchange data when they go by each other. In this ap-proach, storage resource in a vehicle is generally limited. Therefore, attributes of data that have to be stored in vehicles are an important factor in order to efficiently distribute desired data. In VA-NETs, there are different types of data which depend on the time and location. Such kind of data cannot be deployed adequately to the requesting vehicles only by popularity-based rule. In this paper, we propose a data distribution method that takes into account the effective life and area in addition to popularity of data. Our extensive simulation results demonstrate drastic improve-ments on acquisition performance of the time and area specific data.
Electronic Business Technologies
"... Video dissemination capabilities are crucial for the deployment of many services over VANETs. These services range from enhancing safety via the dissemination of video from the scene of an accident, to advertisement of local services or businesses. This work considers the infrastructure-less scenari ..."
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Video dissemination capabilities are crucial for the deployment of many services over VANETs. These services range from enhancing safety via the dissemination of video from the scene of an accident, to advertisement of local services or businesses. This work considers the infrastructure-less scenario of VANETs and dissemination of video content over this network environment, which is extremely challenging mainly due to its dynamic topology and stringent requirements for video streaming. This study discusses issues and challenges that need to be tackled for disseminating high-quality video over VANETs. Furthermore it surveys and analyzes the suitability of different existing solutions aimed towards effective and efficient techniques for video dissemination in vehicular networks. As a result, a set of the most promising techniques are selected, described in detail and evaluated based on standard terms in quality of service. This thesis also discusses efficiency and suitability of these techniques for video dissemination and compares their performance over the same network condition. In addition, a detailed study on the effect of network coding on video dissemination protocols
Proceedings of International Conference On Global Innovations In Computing Technology (ICGICT'14) ETAM Enhanced Trust Authentication Mechanism for Vehicular Ad Hoc Networks
"... ABSTRACT -VANETs are vulnerable to malicious attacks. A number of secure authentication schemes based on asymmetric cryptography have been proposed to prevent such attacks. However, these schemes are not suitable for highly dynamic environments such as VANETs, because they cannot efficiently cope w ..."
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ABSTRACT -VANETs are vulnerable to malicious attacks. A number of secure authentication schemes based on asymmetric cryptography have been proposed to prevent such attacks. However, these schemes are not suitable for highly dynamic environments such as VANETs, because they cannot efficiently cope with the authentication procedure. Hence, this still calls for an efficient authentication scheme for VANETs. In this paper, we propose a decentralized lightweight authentication scheme called trust-extended authentication mechanism (ETAM) for vehicle-to-vehicle communication networks. ETAM adopts the concept of transitive trust relationships to improve the performance of the authentication procedure and only needs a few storage spaces. Moreover, ETAM satisfies the following security requirements: anonymity, location privacy, mutual authentication, forgery attack resistance, modification attack resistance, replay attack resistance, no clock synchronization problem, no verification table, fast error detection, perfect forward secrecy, man-in-the-middle attack resistance, and session key agreement.
