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.

Vehicle to vehicle communication outage and its impact on convoy driving

Abstract: Advanced vehicle control and safety systems are rapidly evolving around the globe, allowing the testing of convoying systems. A key element in such systems is the production of a reliable vehicle-to-vehicle communication link, capable of robust operation in a range of operating environments. This paper reports on a modelling study of one such system conducted as part of the Road Traffic Advisor project within the UK, based on a communication link in the millimetric waveband (approximately 60 GHz). The likely outage is examined for a basic inter-vehicle data link. This is used in conjunction with a simulation of convoy behaviour based on a control model to examine the effect of such outages on convoy operation. The paper concludes that the impact of the communication protocol and the communication outages on the control dynamics of an automated convoy would not degrade its performance.

Smart vehicle connectivity for safety applications

Abstract: Connected vehicle technology aim to solve some of the biggest challenges in the transportation in the areas of safety, mobility and environment. The safety application for Intelligent Transport System(ITS) is one of the main objectives in this project. Safety application is research and industrial initiative which aim to contribute to the global advancement of automobile industry. In this project we focus on V2V communication, once cars are connected which is able to share data with other cars on the road and which help to reduce Highway accidents. Ultimately, vehicles are connect via multiple complementary technologies of vehicle to-vehicle (V2V) and vehicle-to-infrastructure (V2I) connectivity based on Wi-Fi, GPS, Dedicated Short Range Communication (DSRC). VANETS are also considered as one of the most important Simulator for safety of intelligent transportation systems. The use of the DSRC technologies support low latency vehicle-to-vehicle (V2V) communication.

On-road ads delivery scheduling and bandwidth allocation in vehicular CPS

Abstract: We consider a promising application in Vehicular Cyber-Physical Systems (VCPS) called On-road Ad Delivery (OAD), where targeted advertisements are delivered via roadside APs to attract commuters to nearby shops. Different from most existing works on VANETs which only focused on a single technical area, this work on OAD involves technical elements from human factors, cyber systems and transportation systems since a commuter's shopping decision depends on e.g. the attractiveness of the ads, the induced detour, and traffic conditions on different routes. In this paper, we address a new optimization problem in OAD whose goal is to schedule ad messages and allocate a limited amount of AP bandwidth so as to maximize the system-wide performance in terms of total realized utilities (TRU) of the delivered ads. A number of efficient heuristics are proposed to deal with ad message scheduling and AP bandwidth allocation. Besides largescale simulations, we also present a case study in a more realistic scenario utilizing real traces collected from taxis in the city of Shanghai. In addition, we use a commercial traffic simulator (PARAMICS) to show that our proposed solutions are also useful for traffic management in terms of balancing vehicular traffic and alleviating congestion.

Context-aware and location-based service discovery protocol for Vehicular Networks: Proof of correctness

Abstract: Recent advances in Intelligent Transportation Systems (ITS) and the growing number of applications in Vehicular Networks (VN) have attracted many researchers. Applications in Vehicular Networks comprise but are not limited to safety applications and convenience applications. Deploying Vehicular Networks widely cannot be accomplished without overcoming the existing research challenges in such networks. Service discovery is one of the main challenges in Vehicular Networks which are characterized by their large scale and high mobility. Existing service discovery techniques for ad hoc networks cannot be applied directly to Vehicular Networks scenarios due to their poor performance and decreased efficiency in Vehicular Networks. In this paper, we present our location-based service discovery protocol for Vehicular Networks (LocVSDP). Our protocol permits the discovery of location-aware and timesensitive services in Vehicular Networks. Moreover, our LocVSDP protocol improves service discovery efficiency by integrating service information into the network layer and using diverse channels. In our protocol, we present our efficient mechanism that permits to service requesters to find service providers and their routing information simultaneously, which results in overall bandwidth savings. We make use of diverse channels for the exchange of discovery and routing packets, which decreases the congestion on single channels and improves the delay of service discovery. Then, we present our efficient location-based request propagation and an efficient computation of the service reply, based on the specified location of the requested service in the drivers request. We discuss the implementation of our protocol and present its proof of correctness.

Fundamental tradeoffs in vehicular ad hoc networks

Abstract: Due to their advantages in terms of safety, efficiency and comfort, Vehicular Ad Hoc Networks (VANETs) have recently drawn the attention of researchers from among a wide spectrum of engineering fields. Although transportation and communications engineers have independently delved into issues related with vehicular networks, analyzing them from their own perspectives; the void of a more comprehensive study which blends the theory of the two and seeks to address their mutual dependencies, is evident in the current literature. In this paper we initiate this surge by studying the interactions of traffic flow, safety and communications capacity within a simple transportation system. To that end we first render mathematical realizations for such criteria and study how the new technology can affect them and their mutual interactions. More specifically, the tradeoffs inherent in the capacity-flow and flow-safety relations have been analyzed. Our study helps foresee the effect of the gradual introduction of communications-enabled vehicles on the safety and efficiency of transportation networks before their actual deployment.