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.

On-Ramp Merging Strategies of Connected and Automated Vehicles Considering Communication Delay

Abstract: Improper handling of on-ramp merging may cause severe decrease of traffic efficiency and contribute to lower fuel economy, even increasing the collision risk. Cooperative control for connected and automated vehicles (CAVs) has the potential to significantly reduce the negative impact and improve safety and traffic efficiency. Implementation of cooperative on-ramp merging requires the assistance of the vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) communication, wherein the communication delay may cause negative impact on CAV cooperative control. In this paper, scenario of on-ramp merging for CAVs considering the V2I communication delay are studied. Statistical characteristics of the V2I communication delay are explored from both literature and real field test, and a communication delay estimation model based on statistical techniques are proposed. Specifically, we firstly model the CAV on-ramp merging scenario using optimal control in ideal situation. Then, several statistical characteristics of the V2I communication are investigated especially the probability density function of the V2I communication delay in several application scenarios. Further, we proposed a communication delay estimation model and used the modified vehicle state to compute the corresponding control law. Real field test of V2I communication delay indicated that distribution of V2I communication delay could correlate with the application scenario and normal distribution can be generally adopted to approximate the probability density function (PDF) when the number of samples is large enough. Numerical simulation of the CAV on-ramp merging scenario considering the V2I communication delay revealed that dynamic performance of the control process would be deteriorated impacted by the V2I communication delay and it might further impact the final control effect and lead to potential lateral collision in the merging area.

Traffic big data analysis supporting vehicular network access recommendation

Abstract: With the explosive growth of Internet of Vehicles (IoV), it is undoubted that vehicular demands for real-time Internet access would get a surge in the near future. Therefore, it is foreseeable that the cars within the IoV will generate enormous data. On the one hand, the huge volume of data mean we could get much information (e.g., vehicle's condition and real-time traffic distribution) through the big data analysis. On the other hand, the huge volume of data will overload the cellular network since the cellular infrastructure still represents the dominant access methods for ubiquitous connections. The vehicular ad hoc network (VANET) offloading is a promising solution to alleviate the conflict between the limited capacity of cellular network and big data collection. In a vehicular heterogeneous network formed by cellular network and VANET, an efficient network selection is crucial to ensure vehicles' quality of service. To address this issue, we develop an intelligent network recommendation system supported by traffic big data analysis. Firstly, the traffic model for network recommendation is built through big data analysis. Secondly, vehicles are recommended to access an appropriate network by employing the analytic framework which takes traffic status, user preferences, service applications and network conditions into account. Furthermore an Android application is developed, which enables individual vehicle to access network automatically based on the access recommender. Finally, extensive simulation results show that our proposal can effectively select the optimum network for vehicles, and network resource is fully utilized at the same time.

Performance evaluation of IEEE 802.11p for vehicular traffic congestion control

Abstract: Vehicular traffic congestion in metropolitan cities during disaster is a challenge which presents dire consequences for transporting VIPs, life saving drugs, patients, accident victims in need of immediate medical assistance etc. With better navigation system and real-time traffic congestion updates, the vehicles can overcome delays. Vehicular Ad Hoc Network (VANETs), transmits the real time congestion information to the vehicles from a centralized database to avoid unexpected congestion and follow the shortest path to the destination. In this paper a proposed prototype which can be modified to work for the requirement with different models, such as general traffic prediction and re-routing during emergencies in case of fire, accidents etc. along the route is worked out. IEEE 802.11p which has been introduced exclusively for vehicular environments has been implemented at the Physical and Medium Access Control(MAC) layers of the WAVE protocol stack which was considered for a metropolitan city over an unpredictable high density of vehicles. Evaluation of the performance of IEEE 802.11p, Wireless Access for Vehicular Environment (WAVE) communication standard against IEEE802.11a for the vehicular environment for multiple scenarios has been simulated and the results are encouraging.

Proceedings of the 3rd international workshop on Vehicular ad hoc networks

Abstract: Welcome to VANET 2006, the Third ACM International Workshop on Vehicular Ad Hoc Networks! After the success of the first two VANET workshops in 2004 and 2005, 2006 is a great year to continue this exciting workshop. The application of short- to medium-range vehicle communication systems (vehicle-to-vehicle as well as vehicle-to-roadside) technologies is closer to reality than ever before, and the widespread deployment of a communications infrastructure on the roadways and in production vehicles has the potential to improve transportation and the quality of life in ways not imagined a generation ago. VANET technology is entering a critical phase, where academia, industry, and governments worldwide are investing significant time and resources to either prepare for a larger scale deployment decision or to already deploy this technology so that its many benefits in the areas of safety, improvement of traffic flow, and convenience can be leveraged: In the United States, the Vehicle Infrastructure Integration Initiative (VII) works toward deployment of advanced vehicle-vehicle and vehicle-infrastructure communications based on 5.9 Ghz Dedicated Short Range Communication Technology (DSRC). The VII Consortium, established in 2004, is working to determine the feasibility of widespread deployment and to establish an implementation strategy. The consortium consists of most major vehicle manufacturers, many State Departments of Transportation, and the US Department of Transportation. Furthermore, the Vehicle Safety Communication Consortium (VSC), a group of OEMs partnering with the US Department of Transportation, is working on next generation communication-based vehicle safety applications such as a Cooperative Intersection Collision Avoidance Systems (CICAS). In Japan, Vehicle to Infrastructure Communication for Safety and Mobility is developed in the Smartway project. Among others, one of the goals of Smartway is to enable the realization of services related to "safety and safe driving" via communication technology. Vehicle-to-Vehicle Communication for Safety is also looked at in the Advanced Safety Vehicle (ASV) program sponsored by the Japanese Ministry of Land, Infrastructure and Transport (MLIT). In Europe, the COMeSafety program started its work within the 6th Framework Program on January 1, 2006. The project supports the eSafety Forum with respect to all issues related to vehicle-to-vehicle and vehicle-to-infrastructure communications as the basis for cooperative intelligent road transport systems. The Car2Car Communication Consortium is a non-profit organization initiated by European vehicle manufacturers, which is open for suppliers, research organizations, and other partners. The Car2Car Communication Consortium is dedicated to the objective of further increasing road traffic safety and efficiency by means of inter-vehicle communications. .The goal of this workshop is to present and discuss recent advances in the developing area of wireless vehicular ad hoc networking (VANET) and to bring experts from different parts of the world together to exchange ideas and to discuss exciting challenges and their solutions in this very active VANET community.

Vehicular communication - a candidate technology for traffic safety

Abstract: Research in traffic safety has indicated that in-vehicle safety systems provide a better service to drivers when they use data about nearby vehicles. For supplying such information, vehicular communication can be employed. However, the development of in-vehicle safety systems is currently at an early stage, and the applicability of the communication between vehicles for improving traffic safety is still under investigation. This paper provides an analysis of the role of communication for implementing traffic safety services. We survey approaches to vehicular communication and identify the most appropriate alternative for developing active safety systems that implement safety functions such as collision warning and collision avoidance.