Vehicle-to-Vehicle Communication—A Vertical Handover Algorithm Based on Vehicle Speed
01 Jan 2018-Vol. 472, pp 481-489
TL;DR: The MAC (Media Access Control) layer protocol, features of IEEE802p standard, and the handover protocol problems it is facing are discussed and a vertical handover algorithm has been analyzed using vehicle speed and the results have been supported by simulation.
Abstract: Vehicular communication is a part of intelligent transport system (ITS) which provides an intelligent way of transport to avoid accidents. Vehicle-to-Vehicle communication (V2V) is carried out through Vehicular Ad hoc Networks (VANET). This paper discusses about the MAC (Media Access Control) layer protocol, features of IEEE802.11p standard, and the handover protocol problems it is facing. Due to vehicle high speed and the non-homogeneous structure of the network infrastructure, support of connectivity by VANET is still a challenging task. In this paper, a vertical handover algorithm has been analyzed using vehicle speed, and the results have been supported by simulation.
Citations
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TL;DR: An extensive overview of the ITS and the evolution of ITS to VANets is provided, the details of VANETs are provided, and the privacy and security attacks in VANets with their applications and challenges are discussed.
131 citations
Journal Article•
TL;DR: In this paper, a joint vehicle-vehicle/vehicle-roadside communication protocol is proposed for cooperative collision avoidance in VANETs, where emergency warning messages are simultaneously transmitted via V2V and V2R communications in order to achieve multipath diversity routing.
Abstract: A joint vehicle-vehicle/vehicle-roadside communication protocol is proposed
for cooperative collision avoiding in Vehicular Ad Hoc Networks (VANETs). In this protocol,
emergency warning messages are simultaneously transmitted via Vehicle-to-Vehicle (V2V) and
Vehicle-to-Roadside (V2R) communications in order to achieve multipath diversity routing. In
addition, to further improve communication reliability and achieve low latency, a Multi-Channel
(MC) technique based on two nonoverlapping channels for Vehicle-Vehicle (V2V) and V2R (or
R2V) is proposed. The simulation results demonstrate that the proposed joint V2V/V2R (R2V)
communication protocol is capable of improving the message delivery ratio and obtaining low latency,
which are very important merits for highway traffic safety.
15 citations
TL;DR: A comprehensive analysis of recent energy saving control methods and applications for EVs is provided but also demonstrates insights into new directions and optimizations for energy saving technologies for environmentally friendly and traffic-friendly EVs in a smart city.
Abstract: Energy saving techniques have been widely employed for traditional centralized motor drive electric vehicles (EVs) to improve the efficiency and driving range. Wheel motor drives, including in-wheel motor installed inside the wheel hub and near-wheel motor installed very close to the wheel hub can be controlled independently and accurately to provide drive and regenerative braking torque. Recently, wheel motor drive (WMD) electric vehicles (EVs) have been developing rapidly. However, only a few researchers have conducted a comprehensive survey on energy saving control methods and applications for WMD EVs. This paper presents a comprehensive review of energy saving methods and applications for EVs, as common approaches in energy saving and regenerative braking are reviewed. Then, regenerative braking in EV is presented in detail, including control strategies, simulation methods, energy storage system, case study, and efficiency and optimization methods. Moreover, the motor efficiency and motor loss efficiency optimization are discussed. Finally, the future research trends in energy efficiency saving control methods for EVs are elaborated. Therefore, this review not only provides a comprehensive analysis of recent energy saving control methods and applications for EVs but also demonstrates insights into new directions and optimizations for energy saving technologies for environmentally friendly and traffic-friendly EVs in a smart city.
10 citations
3 citations
References
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TL;DR: An overview of highway cooperative collision avoidance (CCA), which is an emerging vehicular safety application using the IEEE- and ASTM-adopted Dedicated Short Range Communication (DSRC) standard, and an example of the safety performance of CCA using simulated vehicle crash experiments.
Abstract: This article presents an overview of highway cooperative collision avoidance (CCA), which is an emerging vehicular safety application using the IEEE- and ASTM-adopted Dedicated Short Range Communication (DSRC) standard. Along with a description of the DSRC architecture, we introduce the concept of CCA and its implementation requirements in the context of a vehicle-to-vehicle wireless network, primarily at the Medium Access Control (MAC) and the routing layer. An overview is then provided to establish that the MAC and routing protocols from traditional Mobile Ad Hoc networks arc not directly applicable for CCA and similar safety-critical applications. Specific constraints and future research directions are then identified for packet routing protocols used to support such applications in the DSRC environment. In order to further explain the interactions between CCA and its underlying networking protocols, we present an example of the safety performance of CCA using simulated vehicle crash experiments. The results from these experiments arc also used to demonstrate the need for network data prioritization for safety-critical applications such as CCA. Finally, the performance sensitivity of CCA to unreliable wireless channels is discussed based on the experimental results.
920 citations
TL;DR: In this paper, the authors provide an overview of existing VTV channel measurement campaigns in a variety of important environments, and the channel characteristics (such as delay spreads and Doppler spreads) therein.
Abstract: Traffic telematics applications are currently under intense research and development for making transportation safer, more efficient, and more environmentally friendly. Reliable traffic telematics applications and services require vehicle-to-vehicle wireless communications that can provide robust connectivity, typically at data rates between 1 and 10 Mb/s. The development of such VTV communications systems and standards require, in turn, accurate models for the VTV propagation channel. A key characteristic of VTV channels is their temporal variability and inherent non-stationarity, which has major impact on data packet transmission reliability and latency. This article provides an overview of existing VTV channel measurement campaigns in a variety of important environments, and the channel characteristics (such as delay spreads and Doppler spreads) therein. We also describe the most commonly used channel modeling approaches for VTV channels: statistical as well as geometry-based channel models have been developed based on measurements and intuitive insights. Extensive references are provided.
441 citations
17 Nov 2010
TL;DR: An overview of the current state of the art of wireless access in vehicular environments, and the potential differences between application requirements and what can be offered by the current WAVE solutions are analyzed.
Abstract: Wireless vehicular networks operating on the dedicated short-range communications (DSRC) frequency bands are the key enabling technologies for the emerging market of intelligent transport system (ITS). The wireless access in vehicular environments (WAVE) is significantly different from the Wi-Fi and cellular wireless networking environments. The specifications defined by IEEE802.11P and IEEE1609 represent the most mature set of standards for DSRC/WAVE networks. This paper provides an overview of the current state of the art, and analyses the potential differences between application requirements and what can be offered by the current WAVE solutions. It is shown that the current solutions may be inadequate for large-scale deployment. The primary challenge is to develop scalable, robust, low-latency and high-throughput technologies for safety applications that will significantly reduce collisions and save lives and property loss. Further research ideas are proposed to address this challenge.
240 citations
01 Jan 2010
TL;DR: An analytical model is presented in support of a novel vertical handover algorithm that uses the vehicle’s speed as crucial input and overcomes, under the assumptions, network performance of recent related works.
Abstract: Although Vehicular Ad hoc Networks are emerging as a novel paradigm for new classes of secure and safety services, supporting seamless connectivity remains a challenge, due to the high vehicle speed, and the nonhomogeneous nature of the network infrastructure. In this work we shall present an analytical model in support of a novel vertical handover algorithm that uses the vehicle’s speed as crucial input and overcomes, under our assumptions, network performance of recent related works. We support our initial results with a simulation study.
17 citations
TL;DR: The simulation results demonstrate that the proposed joint V2V/V2R (R2V) communication protocol is capable of improving the message delivery ratio and obtaining low latency, which are very important merits for highway traffic safety.
Abstract: A joint vehicle-vehicle/vehicle-roadside communication protocol is proposed
for cooperative collision avoiding in Vehicular Ad Hoc Networks (VANETs). In this protocol,
emergency warning messages are simultaneously transmitted via Vehicle-to-Vehicle (V2V) and
Vehicle-to-Roadside (V2R) communications in order to achieve multipath diversity routing. In
addition, to further improve communication reliability and achieve low latency, a Multi-Channel
(MC) technique based on two nonoverlapping channels for Vehicle-Vehicle (V2V) and V2R (or
R2V) is proposed. The simulation results demonstrate that the proposed joint V2V/V2R (R2V)
communication protocol is capable of improving the message delivery ratio and obtaining low latency,
which are very important merits for highway traffic safety.
17 citations