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.

Robust model predictive cooperative adaptive cruise control subject to V2V impairments

Abstract: To improve traffic throughput, Cooperative Adaptive Cruise Control (CACC) has been proposed as a solution. The usage of Vehicle-to-Vehicle (V2V) communication enables short following distances, thereby increasing road capacity and fuel reduction (especially for trucks). Control designs for CACC use the wirelessly communicated intended acceleration of a preceding vehicle as a feedforward action in a following vehicle. This feedforward action may determine approximately 80% of the total control action. In case of a communication failure, this feedforward is no longer available, and a larger time gap is needed to ensure high performance and robustness in terms of stability and safety. However, such a larger time gap is not instantly realizable. Therefore, a CACC design is needed which is robust against intermittent communication failures. This paper proposes to share model-based predictions of the intended acceleration via V2V communication, which are stored in a buffer of the following vehicle. This buffer is used in case a packet dropout occurs. Further, since the communication frequency is lower than the frequency of the control-platform, this buffer is also used to virtually upgrade the communication frequency. The design has been tested in experimental vehicles and shows an increased control performance, also in periods of packet dropouts.

Vehicular Internet: Security & Privacy Challenges and Opportunities

Abstract: The vehicular internet will drive the future of vehicular technology and intelligent transportation systems (ITS). Whether it is road safety, infotainment, or driver-less cars, the vehicular internet will lay the foundation for the future of road travel. Governments and companies are pursuing driver-less vehicles as they are considered to be more reliable than humans and, therefore, safer. The vehicles today are not just a means of transportation but are also equipped with a wide range of sensors that provide valuable data. If vehicles are enabled to share data that they collect with other vehicles or authorities for decision-making and safer driving, they thereby form a vehicular network. However, there is a lot at stake in vehicular networks if they are compromised. With the stakes so high, it is imperative that the vehicular networks are secured and made resilient to any attack or attempt that may have serious consequences. The vehicular internet can also be the target of a cyber attack, which can be devastating. In this paper, the opportunities that the vehicular internet offers are presented and then various security and privacy aspects are discussed and some solutions are presented.

Scalable certificate revocation list distribution in vehicular ad hoc networks

Abstract: In this paper, the primary objective is to discuss the details of scalable methods for distributing certificate revocation lists and other large files using vehicle-to-vehicle and vehicle-to-infrastructure communications while taking advantage of the multi-channel operations in IEEE 1609.4. We also discuss the results from a simulation study using the ns-3 network simulator to closely replicate the WAVE environment discussed in the IEEE 802.11p and 1609 draft standards. Realistic vehicle traces were used in the simulation study. The results show that the methods developed in this research scale very well for increasing vehicle densities.

Message broadcast using optical orthogonal codes in vehicular communication systems

Abstract: Broadcast communication is considered to be especially important in delivering safety messages in vehicular environments. In this paper, we introduce and explore a new method for message broadcast based on repetition. The proposed method uses optical orthogonal codes in vehicular broadcast communications to increase the probability of detection and reduce reception delay. We formulate a general framework in which we can examine and evaluate the performance of broadcast schemes based on repetition. This framework is used to compare our method to other proposed broadcast methods.

Vehicular Cloud Computing: Trends and Challenges

Abstract: Recently vehicular Ad hoc Networks (VANET) has attracted the attention of research communities, leading car manufactures and governments due to its potential applications and specific characteristics. Their research outcome was started with awareness between vehicles for collision avoidance to internet access and then expanded to vehicular multimedia communications. Moreover, vehicle’s high computation, communication and storage resources are set a ground for vehicular networks to deploy these applications in the near future. Nevertheless, on- board resources in vehicles are mostly underutilized. Vehicular Cloud Computing (VCC) is developed to utilize the VANET resources efficiently and hence provide subscribers safe and infotainment services. In this article, we perform a survey of state-of-the-art vehicular cloud computing as well as the existing techniques that utilizes cloud computing for performance improvement in VANET. We then classified the VCC based on the applications, services types and vehicular cloud organization. We present the detail for each VCC application and formation. Lastly, we discussed the open issues and research directions related to VANET cloud computing.