Vehicular communication systems

About: Vehicular communication systems is a research topic. Over the lifetime, 2532 publications have been published within this topic receiving 64775 citations. The topic is also known as: V2V & vehicle-to-vehicle.

Cooperative adaptive cruise control in mixed traffic with selective use of vehicle-to-vehicle communication

Abstract: This study is focused on the design of cooperative adaptive cruise control (CACC) to regulate the longitudinal motion of connected and automated vehicles (CAVs) in mixed traffic that is composed of human-driven vehicles and CAVs. Wireless vehicle-to-vehicle communication is exploited to monitor the motion of multiple broadcasting vehicles, and a strategy is designed to determine whether the received data of other vehicles are incorporated into CACC. A condition is derived for choosing control gains that ensure the internal stability of CAVs in the presence of time delays and switching connectivity topologies of information flow. Moreover, because the switching connectivity topologies may change the dynamics of the whole vehicle chain, the authors apply a data-driven approach for online optimisation of control gains such that CACC adapts to the variations of connectivity topologies. The proposed selective CACC is validated through numerical simulations. To enhance the fidelity of simulations, they use the data collected through on-road experiments to simulate the motion of human-driven vehicles and apply the physics-based vehicle dynamic model to simulate the motion of CAVs. Simulation results demonstrate the advantages of the proposed selective CACC in improving vehicle safety and in mitigating perturbations in mixed traffic.

A Novel Network Mobility Management Scheme for Vehicular Networks

Abstract: In recent years, vehicular networks have been widely studied because these networks become an important part of wireless metropolitan networks. This type of wireless network is different from other conventional wireless mobile networks since the mobile nodes in the networks usually have high speed, sufficient power and dynamic topology. In vehicular networks, vehicles can connect with access points, which are deployed on the roadside, to communicate with their correspondent nodes through Internet. However, the radio range of antennas which are installed in vehicles and access points are limited. As a result, to maintain connections during the trips, vehicles have to switch their access points frequently. The question of how to design an efficient mobility management solution for vehicular networks is still very important in such mobile environment. In this paper, a novel mobility management scheme for vehicular networks is proposed. Network mobility solution is adopted for vehicular networks and intra-cluster communications are used to improve the quality of the mobility.

Information-centric dissemination protocol for safety information in vehicular ad-hoc networks

Abstract: In vehicular networks, efficient safety information dissemination is a crucial issue. Unique characteristics of such an environment like highly mobility, fast topology changing, short-lived and intermittent connectivity pose challenges for safety information dissemination. Although IEEE 802.11p is standardized as an amendment to the IEEE 802.11 for connection-based wireless communication in vehicular environments (WAVE), it is still an open topic and a challenge to efficiently handle high mobility, intermittent connectivity, and spontaneous characteristics of vehicles on the roadway during wireless communication. This paper exploits information centric networking approach to design an efficient information dissemination protocol for such a challenging environment. The protocol is designed for both communication schemes in vehicular networks including vehicles-to-vehicles and vehicle-to-road. By focusing on information object itself, instead of end-to-end connection, the proposed mechanism supports fast and efficient data dissemination among multiple content consumers and multiple content providers, removing dependence on end-to-end connection between two nodes, thus improve the overall network performance. Through experimental results over different scenarios, we show that the proposed protocol achieves a significant improvement in term of the network performance compared to the conventional approach (WAVE).

TIS: A threshold incentive scheme for secure and reliable data forwarding in vehicular Delay Tolerant Networks

Abstract: Delay Tolerant Networks (DTNs) have been utilized in wide-raging applications where a continuous end-to-end connection is unavailable and the message transmission is fulfilled by the cooperation among DTN nodes and follows a store-carry-and-forward manner such as vehicular networks. A series of incentive schemes were proposed to stimulate the selfish nodes to take on the energy-consuming job of forwarding bundles. However, the Onboard Units (OBU) equipped on vehicles are vulnerable to node compromise attack and the existing incentive mechanisms cannot well resist such sophisticated attacks sponsored by colluding vehicles and model the continuous collaboration among vehicles. In this paper, a novel threshold credit-based incentive mechanism is proposed based on the modified model of population dynamics to efficiently prevent the node compromise attacks, stimulate the cooperation among intermediate nodes, maximize vehicular nodes' interests and realize the fairness of possessing the same opportunity to forward packets for credits. Then, based on it, a secure and reliable packet forwarding protocol TIS is proposed. By devising a time order-preserving aggregated signature scheme, it also effectively solves the open problem of resisting the layer-adding attack launched by the collusion of intermediate vehicles. Finally, the security analysis and the extensive simulations show the effectiveness of our proposed TIS in resisting the sophisticated attacks mentioned above and the efficiency in terms of high reliability, high delivery ratio and low average delay in vehicular DTNs.

Performance evaluation of information propagation in vehicular ad hoc network

Abstract: Intelligent transportation systems are based on the acquisition and dissemination of accurate and timely traffic information. Wireless communication technology has made this possible. Vehicles equipped with communication module and road-side stations constitute vehicular ad hoc network (VANET), in which traffic information is collected and shared. This article studies the connectivity of information propagation in inter-vehicle communication on the basis of the most forward within radius (MFR) routing protocol. It mainly focuses on packet loss rate, packet transmission distance and effective coverage range of road-side stations. The authors use such indicators to evaluate the performance of inter-vehicle communication for different equipped rates, wireless communication ranges and typical distributions of vehicle space headway, which can be referenced in practical deployment of VANET. Simulation results are shown as well.