A contention-free broadcast protocol for periodic safety messages in vehicular Ad-hoc networks

IEEE Commun. Surv. Tutorials

Wang

et al. 2016

663

273

Abstract-Vehicles on the road with some common interests can cooperatively form a platoon-based driving pattern, in which a vehicle follows another one and maintains a small and nearly constant distance to the preceding vehicle. It has been proved that, compared to driving individually, such a platoon-based driving pattern can significantly improve the road capacity and energy efficiency. Moreover, with the emerging vehicular adhoc network (VANET), the performance of platoon in terms of road capacity, safety and energy efficiency, etc., can be further improved. On the other hand, the physical dynamics of vehicles inside the platoon can also affect the performance of VANET. Such a complex system can be considered as a platoon-based vehicular cyber-physical system (VCPS), which has attracted significant attention recently. In this paper, we present a comprehensive survey on platoon-based VCPS. We first review the related work of platoon-based VCPS. We then introduce two elementary techniques involved in platoon-based VCPS: the vehicular networking architecture and standards, and traffic dynamics, respectively. We further discuss the fundamental issues in platoon-based VCPS, including vehicle platooning/clustering, cooperative adaptive cruise control (CACC), platoon-based vehicular communications, etc., and all of which are characterized by the tight coupled relationship between traffic dynamics and VANET behaviors. Since system verification is critical to VCPS development, we also give an overview of VCPS simulation tools. Finally, we share our view on some open issues that may lead to new research directions.Index Terms-Platoon, Cyber-physical system (CPS), Vehicular ad-hoc network (VANET), Platoon-based vehicular communications, Cooperative adaptive cruise control (CACC), Simulator.

Section: ) Intra-platoon Communicationsmentioning

confidence: 99%

A Survey on Platoon-Based Vehicular Cyber-Physical Systems

IEEE Commun. Surv. Tutorials

Wang

et al. 2016

663

273

“…The main idea for typical contention-free solutions is that vehicles are grouped into a cluster in which the cluster head is responsible for allocating time division multiple access (TDMA) slots to other cluster members [11], [23], [24]. As for typical contention-based solutions, the networking parameters, such as the beacon frequency, beacon dwelling time, transmit power and contention window size, are adjusted adaptively in accordance with the changing traffic conditions to achieve better system performance [9], [10], [14], [25]- [30].…”

Section: B Message Disseminationmentioning

confidence: 99%

A Joint Control–Communication Design for Reliable Vehicle Platooning in Hybrid Traffic

Bing-yi

IEEE Trans. Veh. Technol.

et al. 2017

Abstract-Recent studies have shown that traffic safety and efficiency can be substantially improved by vehicle platooning, in which vehicles periodically broadcast their kinetic status to neighbors, known as beacon message dissemination. As a networked control system, vehicle platoon has attracted significant attention from both the control and networking areas. However, few studies consider the practical traffic scenario with both platoons and individual vehicles, and the proposed beaconing schemes lack the deep understanding of relationship between the beaconing performance and the requirements of the control mechanism. To address these challenging issues, we propose a joint controlcommunication design to achieve reliable vehicle platooning in a more realistic traffic scenario, wherein the traffic consists of both platoons and individual vehicles, and both periodic beacon messages and event-based safety messages shall be delivered together. Specifically, we first develop a comprehensive control-theoretical analysis to understand how the vehicular communication can affect features of platoon driving; based on the understanding, we then propose and analyze an adaptive platoon-based message dissemination scheme; finally, we conduct extensive numerical experiments to validate the effectiveness of the protocol and to confirm the accuracy of the our theoretical analysis.

“…The main idea for typical centralized beaconing scheme is that vehicles are grouped into a cluster in which the cluster head is responsible for allocating TDMA slots to other cluster members [8], [10], [11]. In [8], the authors proposed a contention-free broadcast protocol for periodic safety messages in vehicular networks. The time slot reservation schedule managed by the cluster head can dynamically adjust with traffic situations.…”

Section: Related Workmentioning

confidence: 99%

“…Since IEEE 802.11p provides the basic functionality for IVC, many message dissemination schemes have been developed in the past few years [6]- [8]. Although these studies are fundamentally important, there are two major issues that have not been fully addressed.…”

Section: Introductionmentioning

confidence: 99%

Infrastructure-Assisted Message Dissemination for Supporting Heterogeneous Driving Patterns

Liu

IEEE Trans. Intell. Transport. Syst.

et al. 2017

Abstract-With the advances of Internet of Things (IoT) technologies, individual vehicles can now exchange information to improve traffic safety, and some vehicles can further improve safety and efficiency by coordinating their mobility via cooperative driving. To facilitate these applications, many studies have been focused on the design of inter-vehicle message dissemination protocols. However, most existing designs either assume individual driving pattern or consider cooperative driving only. Moreover, few of them fully exploit infrastructures, such as cameras, sensors, and road-side units (RSUs). In this paper, we address the design of message dissemination that supports heterogeneous driving patterns. Specifically, we first propose an infrastructure-assisted message dissemination framework that can utilize the capability of infrastructures. We then present a novel beacon scheduling algorithm that aims at guaranteeing the timely and reliable delivery of both periodic beacon messages for cooperative driving and event-triggered safety messages for individual driving. To evaluate the performance of the protocol, we develop both theoretical analysis and simulation experiments. Extensive numerical results confirm the effectiveness of the proposed protocol.